[ { "path": ".bazelignore", "content": "# Exclude Bazel roots (workspaces)\nc/fuzz\ngo\njava\njs\nresearch\n" }, { "path": ".editorconfig", "content": "# http://editorconfig.org\n# Consistent coding style across different editors.\n\n# Top-most file\nroot = true\n\n# Global styles:\n# - indent 2 spaces\n# - add final new line\n# - trim trailing whitespace\n[*]\ncharset = utf-8\nend_of_line = lf\nindent_size = 2\nindent_style = space\ninsert_final_newline = true\ntrim_trailing_whitespace = true\n\n# BUILD:\n# - indent 4 spaces\n[BUILD]\nindent_size = 4\n\n# Makefile:\n# - indent 1 tab\n[Makefile]\nindent_size = tab\nindent_style = tab\n\n# Markdown:\n# - indent 4 spaces\n# - trailing whitespace is significant\n[*.md]\nindent_size = 4\ntrim_trailing_whitespace = false\n\n# Python\n# - indent 4 spaces\n[*.py]\nindent_size = 4\n" }, { "path": ".gitattributes", "content": "tests/testdata/* binary\n\n# Exclude everything\n**/** export-ignore\n\n# Allowlist some filenames\n.bazelignore !export-ignore\nBUILD.bazel !export-ignore\nCHANGELOG.md !export-ignore\nCMakeLists.txt !export-ignore\nCONTRIBUTING.md !export-ignore\nLICENSE !export-ignore\nMANIFEST.in !export-ignore\nMODULE.bazel !export-ignore\nREADME !export-ignore\nREADME.md !export-ignore\nSECURITY.md !export-ignore\nsetup.cfg !export-ignore\nsetup.py !export-ignore\n\n# Add sources\nc !export-ignore\nc/** !export-ignore\nc/common/dictionary.bin* export-ignore\nc/fuzz export-ignore\n\n# Add man pages\ndocs !export-ignore\ndocs/** !export-ignore\ndocs/brotli-comparison-study-2015-09-22.pdf export-ignore\n\n# Add python bindings + tests\npython !export-ignore\npython/** !export-ignore\n\n# Add go bindings + tests\ngo !export-ignore\ngo/** !export-ignore\n\n# Add more build files.\nscripts !export-ignore\nscripts/download_testdata.sh !export-ignore\nscripts/libbrotli*.pc.in !export-ignore\n\n# Add testdata\ntests !export-ignore\ntests/*.sh !export-ignore\ntests/*.cmake !export-ignore\ntests/testdata !export-ignore\ntests/testdata/empty !export-ignore\ntests/testdata/empty.compressed !export-ignore\ntests/testdata/ukkonooa !export-ignore\ntests/testdata/ukkonooa.compressed !export-ignore\ntests/testdata/zerosukkanooa.compressed !export-ignore\n\n# Add JNI wrappers\njava !export-ignore\njava/org !export-ignore\njava/org/brotli !export-ignore\njava/org/brotli/wrapper !export-ignore\njava/org/brotli/wrapper/** !export-ignore\n" }, { "path": ".github/dependabot.yml", "content": "# Copyright 2023 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\nversion: 2\nupdates:\n - package-ecosystem: \"github-actions\"\n directory: \"/\"\n schedule:\n interval: \"weekly\"\n" }, { "path": ".github/workflows/build_test.yml", "content": "# Copyright 2021 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n# Workflow for building and running tests under Ubuntu\n\nname: Build/Test\n\non:\n push:\n branches:\n - master\n pull_request:\n types: [opened, reopened, labeled, unlabeled, synchronize]\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n build_test:\n name: Build and test ${{ matrix.name }}\n runs-on: ${{ matrix.os || 'ubuntu-latest' }}\n defaults:\n run:\n shell: bash\n strategy:\n fail-fast: false\n matrix:\n include:\n - name: cmake:gcc\n build_system: cmake\n c_compiler: gcc\n cxx_compiler: g++\n\n - name: cmake:gcc-old\n build_system: cmake\n c_compiler: gcc\n cxx_compiler: g++\n os: ubuntu-22.04\n\n - name: cmake:clang\n build_system: cmake\n c_compiler: clang\n cxx_compiler: clang\n\n - name: cmake:clang-old\n build_system: cmake\n c_compiler: clang\n cxx_compiler: clang\n os: ubuntu-22.04\n\n - name: cmake:package\n build_system: cmake\n cmake_args: -DBROTLI_BUILD_FOR_PACKAGE=ON\n\n - name: cmake:static\n build_system: cmake\n cmake_args: -DBUILD_SHARED_LIBS=OFF\n\n - name: cmake:clang:asan\n build_system: cmake\n sanitizer: address\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: cmake:clang:tsan\n build_system: cmake\n sanitizer: thread\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: cmake:clang:ubsan\n build_system: cmake\n sanitizer: undefined\n c_compiler: clang\n cxx_compiler: clang++\n c_flags: -fno-sanitize-recover=undefined,integer\n\n - name: cmake:qemu-arm-neon-gcc\n build_system: cmake\n c_compiler: arm-linux-gnueabihf-gcc\n cxx_compiler: arm-linux-gnueabihf-g++\n c_flags: -march=armv7-a -mfloat-abi=hard -mfpu=neon\n extra_apt_pkgs: gcc-arm-linux-gnueabihf libc6-dev-armhf-cross qemu-user\n\n - name: cmake-osx:clang\n build_system: cmake\n c_compiler: clang\n cxx_compiler: clang++\n os: macos-latest\n\n - name: cmake-osx:gcc\n build_system: cmake\n c_compiler: gcc\n cxx_compiler: g++\n os: macos-latest\n\n - name: cmake-ios:clang\n build_system: cmake\n c_compiler: clang\n cxx_compiler: clang++\n os: macos-latest\n skip_tests: true # TODO(eustas): run tests in a simulator\n cmake_args: >-\n -DCMAKE_SYSTEM_NAME=iOS\n -DCMAKE_OSX_ARCHITECTURES=arm64\n\n - name: cmake-win64:msvc-rel\n build_system: cmake\n cmake_generator: Visual Studio 17 2022\n cmake_config: Release\n os: windows-latest\n\n - name: cmake-win64:msvc-dbg\n build_system: cmake\n cmake_generator: Visual Studio 17 2022\n cmake_config: Debug\n os: windows-latest\n\n - name: fuzz:clang\n build_system: fuzz\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: python3.10:clang\n build_system: python\n python_version: \"3.10\"\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: python3.14:clang\n build_system: python\n python_version: \"3.14\"\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: python3.14t:clang\n build_system: python\n python_version: \"3.14t\"\n c_compiler: clang\n cxx_compiler: clang++\n\n - name: python3.14-win\n build_system: python\n python_version: \"3.14\"\n os: windows-latest\n\n - name: maven\n build_system: maven\n\n - name: bazel:root\n build_system: bazel\n bazel_project: .\n\n - name: bazel:go\n build_system: bazel\n bazel_project: go\n\n - name: bazel:java\n build_system: bazel\n bazel_project: java\n\n - name: bazel:research\n build_system: bazel\n bazel_project: research\n\n - name: bazel-osx:root\n build_system: bazel\n bazel_project: .\n os: macos-latest\n\n - name: bazel-osx:go\n build_system: bazel\n bazel_project: go\n os: macos-latest\n\n - name: bazel-osx:java\n build_system: bazel\n bazel_project: java\n os: macos-latest\n\n - name: bazel-osx:research\n build_system: bazel\n bazel_project: research\n os: macos-latest\n\n - name: bazel-win:root\n build_system: bazel\n bazel_project: .\n os: windows-latest\n\n # TODO(eustas): restore when go is fixed\n #- name: bazel-win:go\n # build_system: bazel\n # bazel_project: go\n # os: windows-latest\n\n # TODO(eustas): restore when kotlin is fixed\n #- name: bazel-win:java\n # build_system: bazel\n # bazel_project: java\n # os: windows-latest\n\n - name: bazel-win:research\n build_system: bazel\n bazel_project: research\n os: windows-latest\n\n env:\n CC: ${{ matrix.c_compiler || 'gcc' }}\n CXX: ${{ matrix.cxx_compiler || 'gcc' }}\n\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Install extra deps @ Ubuntu\n if: ${{ runner.os == 'Linux' }}\n # Already installed: bazel, clang{13-15}, cmake, gcc{9.5-13.1}, java{8,11,17,21}, maven, python{3.10}\n run: |\n EXTRA_PACKAGES=\"${{ matrix.extra_apt_pkgs || '' }}\"\n sudo apt update\n sudo apt install -y ${EXTRA_PACKAGES}\n\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - name: Configure / Build / Test with CMake\n if: ${{ matrix.build_system == 'cmake' }}\n run: |\n export ASAN_OPTIONS=detect_leaks=0\n declare -a CMAKE_OPTIONS=(${{ matrix.cmake_args || '' }})\n CMAKE_OPTIONS+=(\"-DCMAKE_VERBOSE_MAKEFILE=ON\")\n [ ! -z '${{ matrix.c_compiler || '' }}' ] && CMAKE_OPTIONS+=(-DCMAKE_C_COMPILER='${{ matrix.c_compiler }}')\n [ ! -z '${{ matrix.cxx_compiler || '' }}' ] && CMAKE_OPTIONS+=(-DCMAKE_CXX_COMPILER='${{ matrix.cxx_compiler }}')\n [ ! -z '${{ matrix.sanitizer || '' }}' ] && CMAKE_OPTIONS+=(-DENABLE_SANITIZER='${{ matrix.sanitizer }}')\n [ ! -z '${{ matrix.cmake_generator || '' }}' ] && export CMAKE_GENERATOR='${{ matrix.cmake_generator }}'\n declare -a CMAKE_BUILD_OPTIONS=()\n [ ! -z '${{ matrix.cmake_config || '' }}' ] && CMAKE_BUILD_OPTIONS+=(--config '${{ matrix.cmake_config }}')\n declare -a CMAKE_TEST_OPTIONS=()\n [ ! -z '${{ matrix.cmake_config || '' }}' ] && CMAKE_TEST_OPTIONS+=(-C '${{ matrix.cmake_config }}')\n\n cmake -B out . ${CMAKE_OPTIONS[*]} -DCMAKE_C_FLAGS='${{ matrix.c_flags || '' }}'\n cmake --build out ${CMAKE_BUILD_OPTIONS[*]}\n cd out\n [ ! -z '${{ matrix.skip_tests || '' }}' ] || ctest ${CMAKE_TEST_OPTIONS[*]}\n cd ..\n\n - name: Quick Fuzz\n if: ${{ matrix.build_system == 'fuzz' }}\n run: |\n mkdir ${RUNNER_TEMP}/decode_corpora\n unzip java/org/brotli/integration/fuzz_data.zip -d ${RUNNER_TEMP}/decode_corpora\n cd ${GITHUB_WORKSPACE}/c/fuzz\n bazelisk build --config=asan-libfuzzer :decode_fuzzer\n for f in `ls ${RUNNER_TEMP}/decode_corpora`\n do\n echo \"Testing $f\"\n ./bazel-bin/decode_fuzzer_bin ${RUNNER_TEMP}/decode_corpora/$f\n done\n\n - name: Build with Bazel\n if: ${{ matrix.build_system == 'bazel' }}\n run: |\n cd ${GITHUB_WORKSPACE}/${{ matrix.bazel_project }}\n bazelisk build -c opt ...:all --java_runtime_version=remotejdk_21\n\n - name: Fix symlinks for Bazel (Windows)\n if: ${{ matrix.build_system == 'bazel' && runner.os == 'Windows' && matrix.bazel_project == 'java' }}\n shell: python\n run: |\n import fnmatch\n import os\n import os.path\n from shutil import copyfile\n os.chdir('${{ matrix.bazel_project }}')\n print('Searching for manifests in ' + os.getcwd())\n matches = []\n for root, dirnames, filenames in os.walk('bazel-bin\\\\org\\\\brotli'):\n for filename in fnmatch.filter(filenames, '*.runfiles_manifest'):\n matches.append(os.path.join(root, filename))\n for match in matches:\n print('Scanning manifest ' + match)\n runfiles = match[:-len('_manifest')]\n with open(match) as manifest:\n for entry in manifest:\n entry = entry.strip()\n if not entry.startswith(\"_main\"):\n continue\n if entry.startswith(\"_main/external\"):\n continue\n (alias, space, link) = entry.partition(' ')\n if alias.endswith('.jar') or alias.endswith('.exe'):\n continue\n link = link.replace('/', '\\\\')\n alias = alias.replace('/', '\\\\')\n dst = os.path.join(runfiles, alias)\n if not os.path.exists(dst):\n print(link + ' -> ' + dst)\n parent = os.path.dirname(dst)\n if not os.path.exists(parent):\n os.makedirs(parent)\n copyfile(link, dst)\n print('Finished resolving symlinks')\n\n - name: Test with Bazel\n if: ${{ matrix.build_system == 'bazel' }}\n run: |\n cd ${GITHUB_WORKSPACE}/${{ matrix.bazel_project }}\n bazelisk query \"tests(...)\" --output=label > ${RUNNER_TEMP}/tests.lst\n [ -s ${RUNNER_TEMP}/tests.lst ] && bazelisk test -c opt ...:all --java_runtime_version=remotejdk_21\n bazelisk clean\n\n - name: Build / Test with Maven\n if: ${{ matrix.build_system == 'maven' }}\n run: |\n export MAVEN_OPTS=-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn\n cd java/org/brotli\n mvn -B install\n # TODO(eustas): nuke maven build?\n # cd integration\n # mvn -B verify\n\n - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0\n if: ${{ matrix.build_system == 'python' }}\n with:\n python-version: ${{ matrix.python_version }}\n\n # TODO(eustas): use modern setuptools (split out testing)\n - name: Build / Test with Python\n if: ${{ matrix.build_system == 'python' }}\n run: |\n python -VV\n pip install \"setuptools>=70.0.0\" pytest\n python setup.py build_ext --inplace\n pytest ./python/tests\n\n build_test_dotnet:\n name: Build and test with .NET\n runs-on: ubuntu-latest\n steps:\n\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - name: Build / Test\n run: |\n cd csharp\n dotnet build brotlidec.csproj --configuration Release\n dotnet test brotlidec.Tests.csproj\n\n" }, { "path": ".github/workflows/build_test_wasm.yml", "content": "# Copyright 2025 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n# Workflow for building and running tests with WASM\n\nname: Build/Test WASM\n\non:\n push:\n branches:\n - master\n pull_request:\n types: [opened, reopened, labeled, unlabeled, synchronize]\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n build_test_wasm:\n name: Build and test with WASM\n runs-on: ubuntu-latest\n env:\n CCACHE_DIR: ${{ github.workspace }}/.ccache\n BUILD_TARGET: wasm32\n EM_VERSION: 3.1.51\n # As of 28.08.2025 ubuntu-latest is 24.04; it is shipped with node 22.18\n NODE_VERSION: 22\n\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: true\n fetch-depth: 1\n\n - name: Install node\n uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0\n with:\n node-version: ${{env.NODE_VERSION}}\n\n - name: Get non-EMSDK node path\n run: which node >> $HOME/.base_node_path\n\n - name: Install emsdk\n uses: mymindstorm/setup-emsdk@6ab9eb1bda2574c4ddb79809fc9247783eaf9021 # v14\n with:\n version: ${{env.EM_VERSION}}\n no-cache: true\n\n - name: Set EMSDK node version\n run: |\n echo \"NODE_JS='$(cat $HOME/.base_node_path)'\" >> $EMSDK/.emscripten\n emsdk construct_env\n\n - name: Build\n run: |\n LDFLAGS=\" -s ALLOW_MEMORY_GROWTH=1 -s NODERAWFS=1 \" emcmake cmake -B out .\n cmake --build out\n cd out; ctest --output-on-failure; cd ..\n" }, { "path": ".github/workflows/codeql.yml", "content": "name: \"CodeQL\"\n\non:\n push:\n branches: [ \"master\" ]\n pull_request:\n # The branches below must be a subset of the branches above\n branches: [ \"master\" ]\n schedule:\n - cron: '18 15 * * 0'\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n analyze:\n name: Analyze\n runs-on: 'ubuntu-latest'\n timeout-minutes: 360\n permissions:\n actions: read\n contents: read\n security-events: write\n\n strategy:\n fail-fast: false\n matrix:\n language: [ 'cpp', 'java', 'javascript', 'python' ]\n # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby', 'swift' ]\n\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Checkout repository\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n\n # Initializes the CodeQL tools for scanning.\n - name: Initialize CodeQL\n uses: github/codeql-action/init@e12f0178983d466f2f6028f5cc7a6d786fd97f4b # v3.29.5\n with:\n languages: ${{ matrix.language }}\n # CodeQL is currently crashing on files with large lists:\n # https://github.com/github/codeql/issues/13656\n config: |\n paths-ignore:\n - research\n - js/test_data.*\n\n - if: matrix.language == 'cpp'\n name: Build CPP\n uses: github/codeql-action/autobuild@e12f0178983d466f2f6028f5cc7a6d786fd97f4b # v3.29.5\n\n - if: matrix.language == 'cpp' || matrix.language == 'java'\n name: Build Java\n run: |\n cd ${GITHUB_WORKSPACE}/java\n bazelisk build --spawn_strategy=local --nouse_action_cache -c opt ...:all\n\n - if: matrix.language == 'javascript'\n name: Build JS\n uses: github/codeql-action/autobuild@e12f0178983d466f2f6028f5cc7a6d786fd97f4b # v3.29.5\n\n - if: matrix.language == 'cpp' || matrix.language == 'python'\n name: Build Python\n run: |\n python -VV\n pip install \"setuptools>=70.0.0\"\n python setup.py build_ext\n\n - name: Perform CodeQL Analysis\n uses: github/codeql-action/analyze@e12f0178983d466f2f6028f5cc7a6d786fd97f4b # v3.29.5\n with:\n category: \"/language:${{matrix.language}}\"\n ref: \"${{ github.ref != 'master' && github.ref || '/refs/heads/master' }}\"\n sha: \"${{ github.sha }}\"\n" }, { "path": ".github/workflows/fuzz.yml", "content": "# Copyright 2020 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n# Workflow for building / running oss-fuzz.\n\nname: CIFuzz\n\non: [pull_request]\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n Fuzzing:\n runs-on: ubuntu-latest\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Build Fuzzers\n uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@3e6a7fd7bcd631647ab9beed1fe0897498e6af39 # 22.09.2025\n with:\n oss-fuzz-project-name: 'brotli'\n dry-run: false\n\n - name: Run Fuzzers\n uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@3e6a7fd7bcd631647ab9beed1fe0897498e6af39 # 22.09.2025\n with:\n oss-fuzz-project-name: 'brotli'\n fuzz-seconds: 600\n dry-run: false\n\n - name: Upload Crash\n uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2\n if: failure()\n with:\n name: artifacts\n path: ./out/artifacts\n" }, { "path": ".github/workflows/lint.yml", "content": "# Copyright 2025 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n# Workflow for checking typos and buildifier, formatting, etc.\n\nname: \"Lint\"\n\non:\n push:\n branches: [ \"master\" ]\n pull_request:\n branches: [ \"master\" ]\n schedule:\n - cron: '18 15 * * 0'\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n check:\n name: Lint\n runs-on: 'ubuntu-latest'\n\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Checkout repository\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n\n - name: Install tools\n run: |\n eval \"$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)\"\n brew install buildifier ruff typos-cli\n\n - name: Check typos\n run: |\n eval \"$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)\"\n ./scripts/check_typos.sh\n\n - name: Lint Python code\n run: |\n eval \"$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)\"\n ruff check --extend-select=C4,C90,PERF,RET,SIM,W\n\n # TODO(eustas): run buildifier\n" }, { "path": ".github/workflows/release.yaml", "content": "# Copyright 2023 Google Inc. All Rights Reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n# Workflow for building the release binaries.\n\nname: Release build / deploy\non:\n push:\n branches:\n - master\n - v*.*.*\n release:\n types: [ published ]\n pull_request:\n types: [opened, reopened, labeled, unlabeled, synchronize]\n\npermissions:\n contents: read\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n windows_build:\n name: Windows Build (vcpkg / ${{ matrix.triplet }})\n runs-on: ${{ matrix.runs_on }}\n strategy:\n fail-fast: false\n matrix:\n include:\n - triplet: x86-windows-dynamic\n arch: '-A Win32'\n build_shared_libs: 'ON'\n runs_on: windows-latest\n - triplet: x64-windows-dynamic\n arch: '-A x64'\n build_shared_libs: 'ON'\n runs_on: windows-latest\n - triplet: arm64-windows-dynamic\n arch: '-A ARM64'\n build_shared_libs: 'ON'\n runs_on: windows-11-arm\n - triplet: x86-windows-static\n arch: '-A Win32'\n build_shared_libs: 'OFF'\n runs_on: windows-latest\n - triplet: x64-windows-static\n arch: '-A x64'\n build_shared_libs: 'OFF'\n runs_on: windows-latest\n - triplet: arm64-windows-static\n arch: '-A ARM64'\n build_shared_libs: 'OFF'\n runs_on: windows-11-arm\n\n env:\n VCPKG_VERSION: '2022.11.14'\n VCPKG_ROOT: vcpkg\n VCPKG_DISABLE_METRICS: 1\n\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0\n id: cache-vcpkg\n with:\n path: vcpkg\n key: release-${{ runner.os }}-vcpkg-${{ env.VCPKG_VERSION }}-${{ matrix.triplet }}\n\n - name: Download vcpkg\n if: steps.cache-vcpkg.outputs.cache-hit != 'true'\n shell: 'powershell'\n run: |\n Invoke-WebRequest -Uri \"https://github.com/microsoft/vcpkg/archive/refs/tags/${{ env.VCPKG_VERSION }}.zip\" -OutFile \"vcpkg.zip\"\n\n - name: Bootstrap vcpkg\n if: steps.cache-vcpkg.outputs.cache-hit != 'true'\n shell: 'bash'\n run: |\n set -x\n unzip -q vcpkg.zip\n rm -rf ${VCPKG_ROOT}\n mv vcpkg-${VCPKG_VERSION} ${VCPKG_ROOT}\n ${VCPKG_ROOT}/bootstrap-vcpkg.sh\n\n - name: Configure\n shell: 'bash'\n run: |\n set -x\n mkdir out\n cmake -Bout -H. ${{ matrix.arch }} \\\n -DBUILD_TESTING=OFF \\\n -DBUILD_SHARED_LIBS=${{ matrix.build_shared_libs }} \\\n -DCMAKE_BUILD_TYPE=Release \\\n -DCMAKE_INSTALL_PREFIX=`pwd`/prefix \\\n -DCMAKE_TOOLCHAIN_FILE=${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake \\\n -DVCPKG_TARGET_TRIPLET=${{ matrix.triplet }} \\\n #\n\n - name: Build\n shell: 'bash'\n run: |\n set -x\n cmake --build out --config Release\n\n - name: Install\n shell: 'bash'\n run: |\n set -x\n cmake --build out --config Release --target install\n cp LICENSE prefix/bin/LICENSE.brotli\n\n - name: Package release zip\n shell: 'powershell'\n run: |\n Compress-Archive -Path prefix\\bin\\* `\n -DestinationPath brotli-${{matrix.triplet}}.zip\n\n - name: Upload package\n uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2\n with:\n name: brotli-${{matrix.triplet}}\n path: brotli-${{matrix.triplet}}.zip\n compression-level: 0\n\n testdata_upload:\n name: Upload testdata\n runs-on: 'ubuntu-latest'\n defaults:\n run:\n shell: bash\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - name: Compress testdata\n run: |\n tar cvfJ testdata.txz tests/testdata\n\n - name: Upload archive\n uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2\n with:\n name: testdata\n path: testdata.txz\n compression-level: 0\n\n publish_release_assets:\n name: Publish release assets\n needs: [windows_build, testdata_upload]\n if: github.event_name == 'release'\n runs-on: [ubuntu-latest]\n permissions:\n contents: write\n\n steps:\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - name: Download all artifacts\n uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0\n with:\n path: release_assets\n merge-multiple: true\n\n - name: Publish assets\n env:\n GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}\n run: |\n gh release upload ${{ github.event.release.tag_name }} ./release_assets/*\n\n archive_build:\n needs: publish_release_assets\n name: Build and test from archive\n runs-on: 'ubuntu-latest'\n defaults:\n run:\n shell: bash\n steps:\n\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: Checkout the source\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n submodules: false\n fetch-depth: 1\n\n - name: Archive\n run: |\n git archive HEAD -o archive.tgz\n\n - name: Pick tag\n run: |\n echo \"BROTLI_TAG=$(git describe --tags --abbrev=0)\" >> $GITHUB_ENV\n\n - name: Extract\n run: |\n mkdir archive\n cd archive\n tar xvzf ../archive.tgz\n\n - name: Download testdata\n run: |\n cd archive\n scripts/download_testdata.sh\n\n - name: Configure and Build\n run: |\n cd archive\n cmake -B out .\n cmake --build out\n\n - name: Test\n run: |\n cd archive\n cd out\n ctest\n" }, { "path": ".github/workflows/scorecard.yml", "content": "# This workflow uses actions that are not certified by GitHub. They are provided\n# by a third-party and are governed by separate terms of service, privacy\n# policy, and support documentation.\n\nname: Scorecard supply-chain security\n\non:\n # For Branch-Protection check. Only the default branch is supported. See\n # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection\n branch_protection_rule:\n # To guarantee Maintained check is occasionally updated. See\n # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained\n schedule:\n - cron: '23 21 * * 1'\n push:\n branches: [ \"master\" ]\n\n# Declare default permissions as read only.\npermissions: read-all\n\nconcurrency:\n group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}\n cancel-in-progress: ${{ github.event_name == 'pull_request' }}\n\njobs:\n analysis:\n name: Scorecard analysis\n runs-on: ubuntu-latest\n permissions:\n # Needed to upload the results to code-scanning dashboard.\n security-events: write\n # Needed to publish results and get a badge (see publish_results below).\n id-token: write\n # Uncomment the permissions below if installing in a private repository.\n # contents: read\n # actions: read\n\n steps:\n - name: Harden Runner\n uses: step-security/harden-runner@95d9a5deda9de15063e7595e9719c11c38c90ae2 # v2.13.2\n with:\n egress-policy: audit\n\n - name: \"Checkout code\"\n uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0\n with:\n persist-credentials: false\n\n - name: \"Run analysis\"\n uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3\n with:\n results_file: results.sarif\n results_format: sarif\n # (Optional) \"write\" PAT token. Uncomment the `repo_token` line below if:\n # - you want to enable the Branch-Protection check on a *public* repository, or\n # - you are installing Scorecard on a *private* repository\n # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.\n # repo_token: ${{ secrets.SCORECARD_TOKEN }}\n\n # Public repositories:\n # - Publish results to OpenSSF REST API for easy access by consumers\n # - Allows the repository to include the Scorecard badge.\n # - See https://github.com/ossf/scorecard-action#publishing-results.\n # For private repositories:\n # - `publish_results` will always be set to `false`, regardless\n # of the value entered here.\n publish_results: true\n\n # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF\n # format to the repository Actions tab.\n - name: \"Upload artifact\"\n uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2\n with:\n name: SARIF file\n path: results.sarif\n retention-days: 5\n\n # Upload the results to GitHub's code scanning dashboard.\n - name: \"Upload to code-scanning\"\n uses: github/codeql-action/upload-sarif@e12f0178983d466f2f6028f5cc7a6d786fd97f4b # v2.23.3\n with:\n sarif_file: results.sarif\n" }, { "path": ".gitignore", "content": "# C\n*.d\n*.o\n*.obj\nbin/\nbuildfiles/\n**/obj/\ndist/\n**/bazel-*\n\n# Python\n__pycache__/\n*.py[cod]\n*.so\n*.egg-info/\n\n# Tests\n*.txt.uncompressed\n*.br\n*.unbr\n" }, { "path": "BUILD.bazel", "content": "# Description:\n# Brotli is a generic-purpose lossless compression algorithm.\n\nload(\"@rules_cc//cc:cc_binary.bzl\", \"cc_binary\")\nload(\"@rules_cc//cc:cc_library.bzl\", \"cc_library\")\n\npackage(\n default_visibility = [\"//visibility:public\"],\n)\n\nlicenses([\"notice\"]) # MIT\n\nexports_files([\"LICENSE\"])\n\nconfig_setting(\n name = \"clang-cl\",\n flag_values = {\n \"@bazel_tools//tools/cpp:compiler\": \"clang-cl\",\n },\n visibility = [\"//visibility:public\"],\n)\n\nconfig_setting(\n name = \"msvc\",\n flag_values = {\n \"@bazel_tools//tools/cpp:compiler\": \"msvc-cl\",\n },\n visibility = [\"//visibility:public\"],\n)\n\nSTRICT_C_OPTIONS = select({\n \":msvc\": [],\n \":clang-cl\": [\n \"/W4\",\n \"-Wconversion\",\n \"-Wlong-long\",\n \"-Wmissing-declarations\",\n \"-Wmissing-prototypes\",\n \"-Wno-strict-aliasing\",\n \"-Wshadow\",\n \"-Wsign-compare\",\n \"-Wno-sign-conversion\",\n ],\n \"//conditions:default\": [\n \"--pedantic-errors\",\n \"-Wall\",\n \"-Wconversion\",\n \"-Werror\",\n \"-Wextra\",\n \"-Wlong-long\",\n \"-Wmissing-declarations\",\n \"-Wmissing-prototypes\",\n \"-Wno-strict-aliasing\",\n \"-Wshadow\",\n \"-Wsign-compare\",\n ],\n})\n\nfilegroup(\n name = \"public_headers\",\n srcs = glob([\"c/include/brotli/*.h\"]),\n)\n\nfilegroup(\n name = \"common_headers\",\n srcs = glob([\"c/common/*.h\"]),\n)\n\nfilegroup(\n name = \"common_sources\",\n srcs = glob([\"c/common/*.c\"]),\n)\n\nfilegroup(\n name = \"dec_headers\",\n srcs = glob([\"c/dec/*.h\"]),\n)\n\nfilegroup(\n name = \"dec_sources\",\n srcs = glob([\"c/dec/*.c\"]),\n)\n\nfilegroup(\n name = \"enc_headers\",\n srcs = glob([\"c/enc/*.h\"]),\n)\n\nfilegroup(\n name = \"enc_sources\",\n srcs = glob([\"c/enc/*.c\"]),\n)\n\ncc_library(\n name = \"brotli_inc\",\n hdrs = [\":public_headers\"],\n copts = STRICT_C_OPTIONS,\n strip_include_prefix = \"c/include\",\n)\n\ncc_library(\n name = \"brotlicommon\",\n srcs = [\":common_sources\"],\n hdrs = [\":common_headers\"],\n copts = STRICT_C_OPTIONS,\n deps = [\":brotli_inc\"],\n)\n\ncc_library(\n name = \"brotlidec\",\n srcs = [\":dec_sources\"],\n hdrs = [\":dec_headers\"],\n copts = STRICT_C_OPTIONS,\n deps = [\":brotlicommon\"],\n)\n\ncc_library(\n name = \"brotlienc\",\n srcs = [\":enc_sources\"],\n hdrs = [\":enc_headers\"],\n copts = STRICT_C_OPTIONS,\n linkopts = select({\n \":clang-cl\": [],\n \":msvc\": [],\n \"//conditions:default\": [\"-lm\"],\n }),\n deps = [\":brotlicommon\"],\n)\n\ncc_binary(\n name = \"brotli\",\n srcs = [\"c/tools/brotli.c\"],\n copts = STRICT_C_OPTIONS,\n linkstatic = 1,\n deps = [\n \":brotlidec\",\n \":brotlienc\",\n ],\n)\n\nfilegroup(\n name = \"dictionary\",\n srcs = [\"c/common/dictionary.bin\"],\n)\n" }, { "path": "CHANGELOG.md", "content": "# Changelog\n\nAll notable changes to this project will be documented in this file.\n\nThe format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),\nand this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).\n\n## Unreleased\n\n## [1.2.0] - 2025-10-27\n\n### SECURITY\n - python: added `Decompressor::can_accept_more_data` method and optional\n `output_buffer_limit` argument `Decompressor::process`;\n that allows mitigation of unexpectedly large output;\n reported by Charles Chan (https://github.com/charleswhchan)\n\n### Added\n - **decoder / encoder: added static initialization to reduce binary size**\n - python: allow limiting decoder output (see SECURITY section)\n - CLI: `brcat` alias; allow decoding concatenated brotli streams\n - kt: pure Kotlin decoder\n - cgo: support \"raw\" dictionaries\n - build: Bazel modules\n\n### Removed\n - java: dropped `finalize()` for native entities\n\n### Fixed\n - java: in `compress` pass correct length to native encoder\n\n### Improved\n - build: install man pages\n - build: updated / fixed / refined Bazel buildfiles\n - encoder: faster encoding\n - cgo: link via pkg-config\n - python: modernize extension / allow multi-phase module initialization\n\n### Changed\n - decoder / encoder: static tables use \"small\" model (allows 2GiB+ binaries)\n\n\n## [1.1.0] - 2023-08-28\n\n### Added\n - decoder: `BrotliDecoderAttachDictionary`\n - decoder: `BrotliDecoderOnFinish` callback behind `BROTLI_REPORTING`\n - decoder: `BrotliDecoderSetMetadataCallbacks`\n - encoder: `BrotliEncoderPrepareDictionary`,\n `BrotliEncoderDestroyPreparedDictionary`,\n `BrotliEncoderAttachPreparedDictionary`\n - decoder: `BrotliEncoderOnFinish` callback behind `BROTLI_REPORTING`\n - common: `BrotliSharedDictionaryCreateInstance`,\n `BrotliSharedDictionaryDestroyInstance`,\n `BrotliSharedDictionaryAttach`\n - CLI: `--dictionary` option\n - java: encoder wrapper: `Parameters.mode`\n - java: `Brotli{Input|Output}Stream.attachDictionary`\n - java: wrapper: partial byte array input\n - typescript: decoder (transpiled from Java)\n\n### Removed\n - build: `BROTLI_BUILD_PORTABLE` option\n\n### Fixed\n - java: JNI decoder failed sometimes on power of 2 payloads\n\n### Improved\n - java / js: smaller decoder footprint\n - decoder: faster decoding\n - encoder: faster encoding\n - encoder: smaller stack frames\n\n\n## [1.0.9] - 2020-08-27\n\nRe-release of 1.0.8.\n\n\n## [1.0.8] - 2020-08-27\n\n### SECURITY\n - CVE-2020-8927: potential overflow when input chunk is >2GiB\n\n### Added\n - encoder: `BROTLI_PARAM_STREAM_OFFSET`\n\n### Improved\n - CLI: better reporting\n - CLI: workaround for \"lying feof\"\n - java: faster decoding\n - java: support \"large window\"\n - encoder: use less memory\n - release: filter sources for the tarball\n\n\n## [1.0.7] - 2018-10-23\n\n### Improved\n - decoder: faster decoding on ARM CPU\n\n\n## [1.0.6] - 2018-09-13\n\n### Fixed\n - build: AutoMake and CMake build\n - java: JDK 8<->9 incompatibility\n\n\n## [1.0.5] - 2018-06-27\n\n### Added\n - scripts: extraction of static dictionary from RFC\n\n### Improved\n - encoder: better compression at quality 1\n - encoder: better compression with \"large window\"\n\n\n## [1.0.4] - 2018-03-29\n\n### Added\n - encoder: `BROTLI_PARAM_NPOSTFIX`, `BROTLI_PARAM_NDIRECT`\n - CLI: `--large_window` option\n\n### Improved\n - encoder: better compression\n\n\n## [1.0.3] - 2018-03-02\n\n### Added\n - decoder: `BROTLI_DECODER_PARAM_LARGE_WINDOW` enum\n - encoder: `BROTLI_PARAM_LARGE_WINDOW` enum\n - java: `BrotliInputStream.setEager`\n\n### Fixed\n - build: AutoMake build in some environments\n - encoder: fix one-shot q=10 1-byte input compression\n\n### Improved\n - encoder: better font compression\n\n\n## [1.0.2] - 2017-11-28\n\n### Added\n - build: AutoMake\n - research: better dictionary generators\n\n\n## [1.0.1] - 2017-09-22\n\n### Changed\n - clarifications in `README.md`\n\n\n## [1.0.0] - 2017-09-20\n\n### Added\n - decoder: `BrotliDecoderSetParameter`\n - csharp: decoder (transpiled from Java)\n - java: JNI wrappers\n - javascript: decoder (transpiled from Java)\n - python: streaming decompression\n - research: dictionary generator\n\n### Changed\n - CLI: rename `bro` to `brotli`\n\n### Removed\n - decoder: `BrotliDecoderSetCustomDictionary`\n - encoder: `BrotliEncoderSetCustomDictionary`\n\n### Improved\n - java: faster decoding\n - encoder: faster compression\n\n\n## [0.6.0] - 2017-04-10\n\n### Added\n - CLI: `--no-copy-stat option\n - java: pure java decoder\n - build: fuzzers\n - research: `brotlidump` tool to explore brotli streams\n - go: wrapper\n\n### Removed\n - decoder: API with plain `Brotli` prefix\n\n### Deprecated\n - encoder: `BrotliEncoderInputBlockSize`, `BrotliEncoderCopyInputToRingBuffer`,\n `BrotliEncoderWriteData`\n\n### Improved\n - encoder: faster compression\n - encoder: denser compression\n - decoder: faster decompression\n - python: release GIL\n - python: use zero-copy API\n\n\n## [0.5.2] - 2016-08-11\n\n### Added\n - common: `BROTLI_BOOL`, `BROTLI_TRUE`, `BROTLI_FALSE`\n - decoder: API with `BrotliDecoder` prefix instead of plain `Brotli`\n - build: Bazel, CMake\n\n### Deprecated\n - decoder: API with plain `Brotli` prefix\n\n### Changed\n - boolean argument / result types are re-branded as `BROTLI_BOOL`\n\n### Improved\n - build: reduced amount of warnings in various build environments\n - encoder: faster compression\n - encoder: lower memory usage\n\n\n## [0.5.0] - 2016-06-15\n\n### Added\n - common: library has been assembled from shared parts of decoder and encoder\n - encoder: C API\n\n### Removed\n - encoder: C++ API\n\n\n## [0.4.0] - 2016-06-14\n\n### Added\n - encoder: faster compression modes (quality 0 and 1)\n - decoder: `BrotliGetErrorCode`, `BrotliErrorString` and\n `BROTLI_ERROR_CODES_LIST`\n\n### Removed\n - decoder: deprecated streaming API (using `BrotliInput`)\n\n### Fixed\n - decoder: possible pointer underflow\n\n### Improved\n - encoder: faster compression\n\n\n## [0.3.0] - 2015-12-22\n\n### LICENSE\nLicense have been upgraded to more permissive MIT.\n\n### Added\n - CLI: `--window` option\n - `tools/version.h` file\n - decoder: low level streaming API\n - decoder: custom memory manager API\n\n### Deprecated\n - decoder: streaming API using `BrotliInput` struct\n\n### Fixed\n - decoder: processing of uncompressed blocks\n - encoder: possible division by zero\n\n### Improved\n - encoder: faster decompression\n - build: more portable builds for various CPU architectures\n\n\n## [0.2.0] - 2015-09-01\n\n### Added\n - CLI: `--verbose` and `--repeat` options\n\n### Fixed\n - decoder: processing of uncompressed blocks\n - encoder: block stitching on quality 10 / 11\n\n### Improved\n - build: CI/CD integration\n - build: better test coverage\n - encoder: better compression of UTF-8 content\n - encoder: faster decompression\n\n\n## [0.1.0] - 2015-08-11\n\nInitial release.\n" }, { "path": "CMakeLists.txt", "content": "# Available CMake versions:\n# - Ubuntu 20.04 LTS : 3.16.3\n# - Solaris 11.4 SRU 15 : 3.15\ncmake_minimum_required(VERSION 3.15)\n\n# Since this project's version is loaded from other files, this policy\n# will help suppress the warning generated by cmake.\n# This policy is set because we can't provide \"VERSION\" in \"project\" command.\n# Use `cmake --help-policy CMP0048` for more information.\ncmake_policy(SET CMP0048 NEW)\nproject(brotli C)\n\nif (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)\n message(STATUS \"Setting build type to Release as none was specified\")\n set(CMAKE_BUILD_TYPE \"Release\" CACHE STRING \"Choose the type of build\" FORCE)\nelse()\n message(STATUS \"Build type is '${CMAKE_BUILD_TYPE}'\")\nendif()\n\ninclude(CheckCSourceCompiles)\ncheck_c_source_compiles(\n \"#if defined(__EMSCRIPTEN__)\n int main() {return 0;}\n #endif\"\n BROTLI_EMSCRIPTEN\n)\nif (BROTLI_EMSCRIPTEN)\n message(\"-- Compiler is EMSCRIPTEN\")\nelse()\n message(\"-- Compiler is not EMSCRIPTEN\")\nendif()\n\nif (BROTLI_EMSCRIPTEN)\n message(STATUS \"Switching to static build for EMSCRIPTEN\")\n set(BUILD_SHARED_LIBS OFF)\nendif()\n\n# Reflect CMake variable as a build option.\noption(BUILD_SHARED_LIBS \"Build shared libraries\" ON)\nset(BROTLI_BUILD_TOOLS ON CACHE BOOL \"Build/install CLI tools\")\nset(BROTLI_BUILD_FOR_PACKAGE OFF CACHE BOOL \"Build/install both shared and static libraries\")\n\nif (BROTLI_BUILD_FOR_PACKAGE AND NOT BUILD_SHARED_LIBS)\n message(FATAL_ERROR \"Both BROTLI_BUILD_FOR_PACKAGE and BUILD_SHARED_LIBS are set\")\nendif()\n\n# If Brotli is being bundled in another project, we don't want to\n# install anything. However, we want to let people override this, so\n# we'll use the BROTLI_BUNDLED_MODE variable to let them do that; just\n# set it to OFF in your project before you add_subdirectory(brotli).\nget_directory_property(BROTLI_PARENT_DIRECTORY PARENT_DIRECTORY)\nif (NOT DEFINED BROTLI_BUNDLED_MODE)\n # Bundled mode hasn't been set one way or the other, set the default\n # depending on whether or not we are the top-level project.\n if (BROTLI_PARENT_DIRECTORY)\n set(BROTLI_BUNDLED_MODE ON)\n else()\n set(BROTLI_BUNDLED_MODE OFF)\n endif()\nendif() # BROTLI_BUNDLED_MODE\nmark_as_advanced(BROTLI_BUNDLED_MODE)\n\ninclude(GNUInstallDirs)\n\n# Reads macro from .h file; it is expected to be a single-line define.\nfunction(read_macro PATH MACRO OUTPUT)\n file(STRINGS ${PATH} _line REGEX \"^#define +${MACRO} +(.+)$\")\n string(REGEX REPLACE \"^#define +${MACRO} +(.+)$\" \"\\\\1\" _val \"${_line}\")\n set(${OUTPUT} ${_val} PARENT_SCOPE)\nendfunction(read_macro)\n\n# Version information\nread_macro(\"c/common/version.h\" \"BROTLI_VERSION_MAJOR\" BROTLI_VERSION_MAJOR)\nread_macro(\"c/common/version.h\" \"BROTLI_VERSION_MINOR\" BROTLI_VERSION_MINOR)\nread_macro(\"c/common/version.h\" \"BROTLI_VERSION_PATCH\" BROTLI_VERSION_PATCH)\nset(BROTLI_VERSION \"${BROTLI_VERSION_MAJOR}.${BROTLI_VERSION_MINOR}.${BROTLI_VERSION_PATCH}\")\nmark_as_advanced(BROTLI_VERSION BROTLI_VERSION_MAJOR BROTLI_VERSION_MINOR BROTLI_VERSION_PATCH)\n\n# ABI Version information\nread_macro(\"c/common/version.h\" \"BROTLI_ABI_CURRENT\" BROTLI_ABI_CURRENT)\nread_macro(\"c/common/version.h\" \"BROTLI_ABI_REVISION\" BROTLI_ABI_REVISION)\nread_macro(\"c/common/version.h\" \"BROTLI_ABI_AGE\" BROTLI_ABI_AGE)\nmath(EXPR BROTLI_ABI_COMPATIBILITY \"${BROTLI_ABI_CURRENT} - ${BROTLI_ABI_AGE}\")\nmark_as_advanced(BROTLI_ABI_CURRENT BROTLI_ABI_REVISION BROTLI_ABI_AGE BROTLI_ABI_COMPATIBILITY)\n\nif (ENABLE_SANITIZER)\n set(CMAKE_C_FLAGS \" ${CMAKE_C_FLAGS} -fsanitize=${ENABLE_SANITIZER}\")\n set(CMAKE_CXX_FLAGS \" ${CMAKE_CXX_FLAGS} -fsanitize=${ENABLE_SANITIZER}\")\n set(CMAKE_EXE_LINKER_FLAGS \"${CMAKE_EXE_LINKER_FLAGS} -fsanitize=${ENABLE_SANITIZER}\")\nendif ()\n\ninclude(CheckLibraryExists)\nset(LIBM_LIBRARY)\nset(LIBM_DEP)\nCHECK_LIBRARY_EXISTS(m log2 \"\" HAVE_LIB_M)\nif (HAVE_LIB_M)\n set(LIBM_LIBRARY \"m\")\n if (NOT BUILD_SHARED_LIBS)\n set(LIBM_DEP \"-lm\")\n endif()\nendif()\n\nset(BROTLI_INCLUDE_DIRS \"${CMAKE_CURRENT_SOURCE_DIR}/c/include\")\nmark_as_advanced(BROTLI_INCLUDE_DIRS)\n\nif (BROTLI_BUILD_FOR_PACKAGE)\n set(BROTLI_SHARED_LIBRARIES brotlienc brotlidec brotlicommon)\n set(BROTLI_STATIC_LIBRARIES brotlienc-static brotlidec-static brotlicommon-static)\n set(BROTLI_LIBRARIES ${BROTLI_SHARED_LIBRARIES} ${LIBM_LIBRARY})\nelse() # NOT BROTLI_BUILD_FOR_PACKAGE\n if (BUILD_SHARED_LIBS)\n set(BROTLI_SHARED_LIBRARIES brotlienc brotlidec brotlicommon)\n set(BROTLI_STATIC_LIBRARIES)\n else() # NOT BUILD_SHARED_LIBS\n set(BROTLI_SHARED_LIBRARIES)\n set(BROTLI_STATIC_LIBRARIES brotlienc brotlidec brotlicommon)\n endif()\n set(BROTLI_LIBRARIES ${BROTLI_SHARED_LIBRARIES} ${BROTLI_STATIC_LIBRARIES} ${LIBM_LIBRARY})\nendif() # BROTLI_BUILD_FOR_PACKAGE\nmark_as_advanced(BROTLI_LIBRARIES)\n\nif (MSVC)\n message(STATUS \"Defining _CRT_SECURE_NO_WARNINGS to avoid warnings about security\")\n\n add_definitions(-D_CRT_SECURE_NO_WARNINGS)\nendif()\n\nfile(GLOB_RECURSE BROTLI_COMMON_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} c/common/*.c)\nfile(GLOB_RECURSE BROTLI_DEC_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} c/dec/*.c)\nfile(GLOB_RECURSE BROTLI_ENC_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} c/enc/*.c)\n\nadd_library(brotlicommon ${BROTLI_COMMON_SOURCES})\nadd_library(brotlidec ${BROTLI_DEC_SOURCES})\nadd_library(brotlienc ${BROTLI_ENC_SOURCES})\n\nif (BROTLI_BUILD_FOR_PACKAGE)\n add_library(brotlicommon-static STATIC ${BROTLI_COMMON_SOURCES})\n add_library(brotlidec-static STATIC ${BROTLI_DEC_SOURCES})\n add_library(brotlienc-static STATIC ${BROTLI_ENC_SOURCES})\nendif()\n\n# Older CMake versions does not understand INCLUDE_DIRECTORIES property.\ninclude_directories(${BROTLI_INCLUDE_DIRS})\n\nif (BUILD_SHARED_LIBS)\n foreach(lib ${BROTLI_SHARED_LIBRARIES})\n target_compile_definitions(${lib} PUBLIC \"BROTLI_SHARED_COMPILATION\" )\n string(TOUPPER \"${lib}\" LIB)\n set_target_properties (${lib} PROPERTIES DEFINE_SYMBOL \"${LIB}_SHARED_COMPILATION\")\n endforeach()\nendif() # BUILD_SHARED_LIBS\n\nforeach(lib ${BROTLI_SHARED_LIBRARIES} ${BROTLI_STATIC_LIBRARIES})\n target_link_libraries(${lib} ${LIBM_LIBRARY})\n set_property(TARGET ${lib} APPEND PROPERTY INCLUDE_DIRECTORIES ${BROTLI_INCLUDE_DIRS})\n set_target_properties(${lib} PROPERTIES\n VERSION \"${BROTLI_ABI_COMPATIBILITY}.${BROTLI_ABI_AGE}.${BROTLI_ABI_REVISION}\"\n SOVERSION \"${BROTLI_ABI_COMPATIBILITY}\")\n if (NOT BROTLI_EMSCRIPTEN)\n set_target_properties(${lib} PROPERTIES POSITION_INDEPENDENT_CODE TRUE)\n endif()\n set_property(TARGET ${lib} APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES \"$\")\nendforeach() # BROTLI_xxx_LIBRARIES\n\ntarget_link_libraries(brotlidec brotlicommon)\ntarget_link_libraries(brotlienc brotlicommon)\n\n# For projects stuck on older versions of CMake, this will set the\n# BROTLI_INCLUDE_DIRS and BROTLI_LIBRARIES variables so they still\n# have a relatively easy way to use Brotli:\n#\n# include_directories(${BROTLI_INCLUDE_DIRS})\n# target_link_libraries(foo ${BROTLI_LIBRARIES})\nif (BROTLI_PARENT_DIRECTORY)\n set(BROTLI_INCLUDE_DIRS \"${BROTLI_INCLUDE_DIRS}\" PARENT_SCOPE)\n set(BROTLI_LIBRARIES \"${BROTLI_LIBRARIES}\" PARENT_SCOPE)\nendif()\n\n# Build the brotli executable\nif (BROTLI_BUILD_TOOLS)\n add_executable(brotli c/tools/brotli.c)\n target_link_libraries(brotli ${BROTLI_LIBRARIES})\n # brotli is a CLI tool\n set_target_properties(brotli PROPERTIES MACOSX_BUNDLE OFF)\nendif()\n\n# Installation\nif (NOT BROTLI_BUNDLED_MODE)\n if (BROTLI_BUILD_TOOLS)\n install(\n TARGETS brotli\n RUNTIME DESTINATION \"${CMAKE_INSTALL_BINDIR}\"\n )\n endif()\n\n install(\n TARGETS ${BROTLI_SHARED_LIBRARIES} ${BROTLI_STATIC_LIBRARIES}\n ARCHIVE DESTINATION \"${CMAKE_INSTALL_LIBDIR}\"\n LIBRARY DESTINATION \"${CMAKE_INSTALL_LIBDIR}\"\n RUNTIME DESTINATION \"${CMAKE_INSTALL_BINDIR}\"\n )\n\n install(\n DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli\n DESTINATION \"${CMAKE_INSTALL_INCLUDEDIR}\"\n )\nendif() # BROTLI_BUNDLED_MODE\n\n# Tests\n\n# Integration tests, those depend on `brotli` binary\nif (NOT BROTLI_DISABLE_TESTS AND BROTLI_BUILD_TOOLS)\n # If we're targeting Windows but not running on Windows, we need Wine\n # to run the tests...\n if (WIN32 AND NOT CMAKE_HOST_WIN32)\n find_program(BROTLI_WRAPPER NAMES wine)\n\n if (NOT BROTLI_WRAPPER)\n message(STATUS \"wine not found, disabling tests\")\n set(BROTLI_DISABLE_TESTS TRUE)\n endif()\n endif() # WIN32 emulation\n if (BROTLI_EMSCRIPTEN)\n find_program(BROTLI_WRAPPER NAMES node)\n if (NOT BROTLI_WRAPPER)\n message(STATUS \"node not found, disabling tests\")\n set(BROTLI_DISABLE_TESTS TRUE)\n endif()\n endif() # BROTLI_EMSCRIPTEN\nendif() # BROTLI_DISABLE_TESTS\n\n# NB: BROTLI_DISABLE_TESTS might have changed.\nif (NOT BROTLI_DISABLE_TESTS AND BROTLI_BUILD_TOOLS)\n # If our compiler is a cross-compiler that we know about (arm/aarch64),\n # then we need to use qemu to execute the tests.\n if (\"${CMAKE_C_COMPILER}\" MATCHES \"^.*/arm-linux-gnueabihf-.*$\")\n message(STATUS \"Detected arm-linux-gnueabihf cross-compilation\")\n set(BROTLI_WRAPPER \"qemu-arm\")\n set(BROTLI_WRAPPER_LD_PREFIX \"/usr/arm-linux-gnueabihf\")\n endif()\n\n if (\"${CMAKE_C_COMPILER}\" MATCHES \"^.*/arm-linux-gnueabi-.*$\")\n message(STATUS \"Detected arm-linux-gnueabi cross-compilation\")\n set(BROTLI_WRAPPER \"qemu-arm\")\n set(BROTLI_WRAPPER_LD_PREFIX \"/usr/arm-linux-gnueabi\")\n endif()\n\n if (\"${CMAKE_C_COMPILER}\" MATCHES \"^.*/aarch64-linux-gnu-.*$\")\n message(STATUS \"Detected aarch64-linux-gnu cross-compilation\")\n set(BROTLI_WRAPPER \"qemu-aarch64\")\n set(BROTLI_WRAPPER_LD_PREFIX \"/usr/aarch64-linux-gnu\")\n endif()\n\n include(CTest)\n enable_testing()\n\n set(ROUNDTRIP_INPUTS\n tests/testdata/alice29.txt\n tests/testdata/asyoulik.txt\n tests/testdata/lcet10.txt\n tests/testdata/plrabn12.txt\n c/enc/encode.c\n c/common/dictionary.h\n c/dec/decode.c)\n\n foreach(INPUT ${ROUNDTRIP_INPUTS})\n get_filename_component(OUTPUT_NAME \"${INPUT}\" NAME)\n\n set(OUTPUT_FILE \"${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_NAME}\")\n set(INPUT_FILE \"${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}\")\n\n if (EXISTS \"${INPUT_FILE}\")\n foreach(quality 1 6 9 11)\n add_test(NAME \"${BROTLI_TEST_PREFIX}roundtrip/${INPUT}/${quality}\"\n COMMAND \"${CMAKE_COMMAND}\"\n -DBROTLI_WRAPPER=${BROTLI_WRAPPER}\n -DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}\n -DBROTLI_CLI=$\n -DQUALITY=${quality}\n -DINPUT=${INPUT_FILE}\n -DOUTPUT=${OUTPUT_FILE}.${quality}\n -P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-roundtrip-test.cmake)\n endforeach()\n else()\n message(NOTICE \"Test file ${INPUT} does not exist; OK on tarball builds; consider running scripts/download_testdata.sh before configuring.\")\n endif()\n endforeach()\n\n file(GLOB_RECURSE\n COMPATIBILITY_INPUTS\n RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}\n tests/testdata/*.compressed*)\n\n foreach(INPUT ${COMPATIBILITY_INPUTS})\n string(REGEX REPLACE \"([a-zA-Z0-9\\\\.]+)\\\\.compressed(\\\\.[0-9]+)?$\" \"\\\\1\" UNCOMPRESSED_INPUT \"${INPUT}\")\n if (EXISTS ${UNCOMPRESSED_INPUT})\n add_test(NAME \"${BROTLI_TEST_PREFIX}compatibility/${INPUT}\"\n COMMAND \"${CMAKE_COMMAND}\"\n -DBROTLI_WRAPPER=${BROTLI_WRAPPER}\n -DBROTLI_WRAPPER_LD_PREFIX=${BROTLI_WRAPPER_LD_PREFIX}\n -DBROTLI_CLI=$\n -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${INPUT}\n -P ${CMAKE_CURRENT_SOURCE_DIR}/tests/run-compatibility-test.cmake)\n endif()\n endforeach()\nendif() # BROTLI_DISABLE_TESTS\n\n# Generate a pkg-config files\n\nfunction(generate_pkg_config_path outvar path)\n string(LENGTH \"${path}\" path_length)\n\n set(path_args ${ARGV})\n list(REMOVE_AT path_args 0 1)\n list(LENGTH path_args path_args_remaining)\n\n set(\"${outvar}\" \"${path}\")\n\n while(path_args_remaining GREATER 1)\n list(GET path_args 0 name)\n list(GET path_args 1 value)\n\n get_filename_component(value_full \"${value}\" ABSOLUTE)\n string(LENGTH \"${value}\" value_length)\n\n if (path_length EQUAL value_length AND path STREQUAL value)\n set(\"${outvar}\" \"\\${${name}}\")\n break()\n elseif (path_length GREATER value_length)\n # We might be in a subdirectory of the value, but we have to be\n # careful about a prefix matching but not being a subdirectory\n # (for example, /usr/lib64 is not a subdirectory of /usr/lib).\n # We'll do this by making sure the next character is a directory\n # separator.\n string(SUBSTRING \"${path}\" ${value_length} 1 sep)\n if (sep STREQUAL \"/\")\n string(SUBSTRING \"${path}\" 0 ${value_length} s)\n if (s STREQUAL value)\n string(SUBSTRING \"${path}\" \"${value_length}\" -1 suffix)\n set(\"${outvar}\" \"\\${${name}}${suffix}\")\n break()\n endif()\n endif()\n endif()\n\n list(REMOVE_AT path_args 0 1)\n list(LENGTH path_args path_args_remaining)\n endwhile()\n\n set(\"${outvar}\" \"${${outvar}}\" PARENT_SCOPE)\nendfunction(generate_pkg_config_path)\n\nfunction(transform_pc_file INPUT_FILE OUTPUT_FILE VERSION)\n file(READ ${INPUT_FILE} TEXT)\n\n set(PREFIX \"${CMAKE_INSTALL_PREFIX}\")\n string(REGEX REPLACE \"@prefix@\" \"${PREFIX}\" TEXT ${TEXT})\n string(REGEX REPLACE \"@exec_prefix@\" \"${PREFIX}\" TEXT ${TEXT})\n string(REGEX REPLACE \"@libm@\" \"${LIBM_DEP}\" TEXT ${TEXT})\n\n generate_pkg_config_path(LIBDIR \"${CMAKE_INSTALL_FULL_LIBDIR}\" prefix \"${PREFIX}\")\n string(REGEX REPLACE \"@libdir@\" \"${LIBDIR}\" TEXT ${TEXT})\n\n generate_pkg_config_path(INCLUDEDIR \"${CMAKE_INSTALL_FULL_INCLUDEDIR}\" prefix \"${PREFIX}\")\n string(REGEX REPLACE \"@includedir@\" \"${INCLUDEDIR}\" TEXT ${TEXT})\n\n string(REGEX REPLACE \"@PACKAGE_VERSION@\" \"${VERSION}\" TEXT ${TEXT})\n\n file(WRITE ${OUTPUT_FILE} ${TEXT})\nendfunction()\n\ntransform_pc_file(\"scripts/libbrotlicommon.pc.in\" \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc\" \"${BROTLI_VERSION}\")\n\ntransform_pc_file(\"scripts/libbrotlidec.pc.in\" \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc\" \"${BROTLI_VERSION}\")\n\ntransform_pc_file(\"scripts/libbrotlienc.pc.in\" \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc\" \"${BROTLI_VERSION}\")\n\nif (NOT BROTLI_BUNDLED_MODE)\n install(FILES \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlicommon.pc\"\n DESTINATION \"${CMAKE_INSTALL_LIBDIR}/pkgconfig\")\n install(FILES \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlidec.pc\"\n DESTINATION \"${CMAKE_INSTALL_LIBDIR}/pkgconfig\")\n install(FILES \"${CMAKE_CURRENT_BINARY_DIR}/libbrotlienc.pc\"\n DESTINATION \"${CMAKE_INSTALL_LIBDIR}/pkgconfig\")\nendif() # BROTLI_BUNDLED_MODE\n\nif (BROTLI_BUILD_TOOLS)\n install(FILES \"docs/brotli.1\"\n DESTINATION \"${CMAKE_INSTALL_MANDIR}/man1\")\nendif()\n\ninstall(FILES docs/constants.h.3 docs/decode.h.3 docs/encode.h.3 docs/types.h.3\n DESTINATION \"${CMAKE_INSTALL_MANDIR}/man3\")\n\nif (ENABLE_COVERAGE STREQUAL \"yes\")\n setup_target_for_coverage(coverage test coverage)\nendif()\n" }, { "path": "CONTRIBUTING.md", "content": "Want to contribute? Great! First, read this page (including the small print at\nthe end).\n\n### Before you contribute\nBefore we can use your code, you must sign the\n[Google Individual Contributor License Agreement]\n(https://cla.developers.google.com/about/google-individual)\n(CLA), which you can do online. The CLA is necessary mainly because you own the\ncopyright to your changes, even after your contribution becomes part of our\ncodebase, so we need your permission to use and distribute your code. We also\nneed to be sure of various other things—for instance that you'll tell us if you\nknow that your code infringes on other people's patents. You don't have to sign\nthe CLA until after you've submitted your code for review and a member has\napproved it, but you must do it before we can put your code into our codebase.\nBefore you start working on a larger contribution, you should get in touch with\nus first through the issue tracker with your idea so that we can help out and\npossibly guide you. Coordinating up front makes it much easier to avoid\nfrustration later on.\n\n### Code reviews\nAll submissions, including submissions by project members, require review. We\nuse Github pull requests for this purpose.\n\n### Code style\nCode should follow applicable formatting and style guides described in\n[Google Style Guides](https://google.github.io/styleguide/). C code should be\nC89 compatible.\n\n### The small print\nContributions made by corporations are covered by a different agreement than\nthe one above, the [Software Grant and Corporate Contributor License Agreement]\n(https://cla.developers.google.com/about/google-corporate).\n" }, { "path": "LICENSE", "content": "Copyright (c) 2009, 2010, 2013-2016 by the Brotli Authors.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n" }, { "path": "MANIFEST.in", "content": "include CONTRIBUTING.md\ninclude c/common/*.c\ninclude c/common/*.h\ninclude c/dec/*.c\ninclude c/dec/*.h\ninclude c/enc/*.c\ninclude c/enc/*.h\ninclude c/include/brotli/*.h\ninclude LICENSE\ninclude MANIFEST.in\ninclude python/_brotli.cc\ninclude python/brotli.py\ninclude python/README.md\ninclude python/tests/*\ninclude README.md\ninclude setup.py\ninclude tests/testdata/*\ninclude c/tools/brotli.c\n" }, { "path": "MODULE.bazel", "content": "# Copyright 2025 The Brotli Authors. All rights reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n\"\"\"Brotli reference implementation\"\"\"\n\nmodule(\n name = \"brotli\",\n version = \"1.2.0\",\n repo_name = \"org_brotli\",\n)\n\nbazel_dep(name = \"rules_cc\", version = \"0.2.17\")\n" }, { "path": "README", "content": "BROTLI DATA COMPRESSION LIBRARY\n\nBrotli is a generic-purpose lossless compression algorithm that compresses data\nusing a combination of a modern variant of the LZ77 algorithm, Huffman coding\nand 2nd order context modeling, with a compression ratio comparable to the best\ncurrently available general-purpose compression methods. It is similar in speed\nwith deflate but offers more dense compression.\n\nThe specification of the Brotli Compressed Data Format is defined in RFC 7932\nhttps://datatracker.ietf.org/doc/html/rfc7932\n\nBrotli is open-sourced under the MIT License, see the LICENSE file.\n\nBrotli mailing list:\nhttps://groups.google.com/g/brotli\n" }, { "path": "README.md", "content": "

\n \"GitHub\n \"Fuzzing\n

\n

\"Brotli\"

\n\n### Introduction\n\nBrotli is a generic-purpose lossless compression algorithm that compresses data\nusing a combination of a modern variant of the LZ77 algorithm, Huffman coding\nand 2nd order context modeling, with a compression ratio comparable to the best\ncurrently available general-purpose compression methods. It is similar in speed\nwith deflate but offers more dense compression.\n\nThe specification of the Brotli Compressed Data Format is defined in\n[RFC 7932](https://datatracker.ietf.org/doc/html/rfc7932).\n\nBrotli is open-sourced under the MIT License, see the LICENSE file.\n\n> **Please note:** brotli is a \"stream\" format; it does not contain\n> meta-information, like checksums or uncompressed data length. It is possible\n> to modify \"raw\" ranges of the compressed stream and the decoder will not\n> notice that.\n\n### Installation\n\nIn most Linux distributions, installing `brotli` is just a matter of using\nthe package management system. For example in Debian-based distributions:\n`apt install brotli` will install `brotli`. On MacOS, you can use\n[Homebrew](https://brew.sh/): `brew install brotli`.\n\n[![brotli packaging status](https://repology.org/badge/vertical-allrepos/brotli.svg?exclude_unsupported=1&columns=3&exclude_sources=modules,site&header=brotli%20packaging%20status)](https://repology.org/project/brotli/versions)\n\nOf course you can also build brotli from sources.\n\n### Build instructions\n\n#### Vcpkg\n\nYou can download and install brotli using the\n[vcpkg](https://github.com/Microsoft/vcpkg/) dependency manager:\n\n git clone https://github.com/Microsoft/vcpkg.git\n cd vcpkg\n ./bootstrap-vcpkg.sh\n ./vcpkg integrate install\n ./vcpkg install brotli\n\nThe brotli port in vcpkg is kept up to date by Microsoft team members and\ncommunity contributors. If the version is out of date, please [create an issue\nor pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.\n\n#### Bazel\n\nSee [Bazel](https://www.bazel.build/)\n\n#### CMake\n\nThe basic commands to build and install brotli are:\n\n $ mkdir out && cd out\n $ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=./installed ..\n $ cmake --build . --config Release --target install\n\nYou can use other [CMake](https://cmake.org/) configuration.\n\n#### Python\n\nTo install the latest release of the Python module, run the following:\n\n $ pip install brotli\n\nTo install the tip-of-the-tree version, run:\n\n $ pip install --upgrade git+https://github.com/google/brotli\n\nSee the [Python readme](python/README.md) for more details on installing\nfrom source, development, and testing.\n\n### Contributing\n\nWe glad to answer/library related questions in\n[brotli mailing list](https://groups.google.com/g/brotli).\n\nRegular issues / feature requests should be reported in\n[issue tracker](https://github.com/google/brotli/issues).\n\nFor reporting vulnerability please read [SECURITY](SECURITY.md).\n\nFor contributing changes please read [CONTRIBUTING](CONTRIBUTING.md).\n\n### Benchmarks\n* [Squash Compression Benchmark](https://quixdb.github.io/squash-benchmark/) / [Unstable Squash Compression Benchmark](https://quixdb.github.io/squash-benchmark/unstable/)\n* [Large Text Compression Benchmark](https://mattmahoney.net/dc/text.html)\n* [Lzturbo Benchmark](https://sites.google.com/site/powturbo/home/benchmark)\n\n### Related projects\n> **Disclaimer:** Brotli authors take no responsibility for the third party projects mentioned in this section.\n\nIndependent [decoder](https://github.com/madler/brotli) implementation\nby Mark Adler, based entirely on format specification.\n\nJavaScript port of brotli [decoder](https://github.com/devongovett/brotli.js).\nCould be used directly via `npm install brotli`\n\nHand ported [decoder / encoder](https://github.com/dominikhlbg/BrotliHaxe)\nin haxe by Dominik Homberger.\nOutput source code: JavaScript, PHP, Python, Java and C#\n\n7Zip [plugin](https://github.com/mcmilk/7-Zip-Zstd)\n\nDart compression framework with\n[fast FFI-based Brotli implementation](https://pub.dev/documentation/es_compression/latest/brotli/)\nwith ready-to-use prebuilt binaries for Win/Linux/Mac\n" }, { "path": "SECURITY.md", "content": "### Reporting\n\nTo report a security issue, please use [https://g.co/vulnz](https://g.co/vulnz).\nWe use g.co/vulnz for our intake, and do coordination and disclosure here on\nGitHub (including using GitHub Security Advisory). The Google Security Team will\nrespond within 5 working days of your report on g.co/vulnz.\n" }, { "path": "c/common/constants.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"constants.h\"\n\nconst BROTLI_MODEL(\"small\")\nBrotliPrefixCodeRange _kBrotliPrefixCodeRanges[BROTLI_NUM_BLOCK_LEN_SYMBOLS] = {\n {1, 2}, {5, 2}, {9, 2}, {13, 2}, {17, 3}, {25, 3},\n {33, 3}, {41, 3}, {49, 4}, {65, 4}, {81, 4}, {97, 4},\n {113, 5}, {145, 5}, {177, 5}, {209, 5}, {241, 6}, {305, 6},\n {369, 7}, {497, 8}, {753, 9}, {1265, 10}, {2289, 11}, {4337, 12},\n {8433, 13}, {16625, 24}};\n" }, { "path": "c/common/constants.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/**\n * @file\n * Common constants used in decoder and encoder API.\n */\n\n#ifndef BROTLI_COMMON_CONSTANTS_H_\n#define BROTLI_COMMON_CONSTANTS_H_\n\n#include \"platform.h\"\n\n/* Specification: 7.3. Encoding of the context map */\n#define BROTLI_CONTEXT_MAP_MAX_RLE 16\n\n/* Specification: 2. Compressed representation overview */\n#define BROTLI_MAX_NUMBER_OF_BLOCK_TYPES 256\n\n/* Specification: 3.3. Alphabet sizes: insert-and-copy length */\n#define BROTLI_NUM_LITERAL_SYMBOLS 256\n#define BROTLI_NUM_COMMAND_SYMBOLS 704\n#define BROTLI_NUM_BLOCK_LEN_SYMBOLS 26\n#define BROTLI_MAX_CONTEXT_MAP_SYMBOLS (BROTLI_MAX_NUMBER_OF_BLOCK_TYPES + \\\n BROTLI_CONTEXT_MAP_MAX_RLE)\n#define BROTLI_MAX_BLOCK_TYPE_SYMBOLS (BROTLI_MAX_NUMBER_OF_BLOCK_TYPES + 2)\n\n/* Specification: 3.5. Complex prefix codes */\n#define BROTLI_REPEAT_PREVIOUS_CODE_LENGTH 16\n#define BROTLI_REPEAT_ZERO_CODE_LENGTH 17\n#define BROTLI_CODE_LENGTH_CODES (BROTLI_REPEAT_ZERO_CODE_LENGTH + 1)\n/* \"code length of 8 is repeated\" */\n#define BROTLI_INITIAL_REPEATED_CODE_LENGTH 8\n\n/* \"Large Window Brotli\" */\n\n/**\n * The theoretical maximum number of distance bits specified for large window\n * brotli, for 64-bit encoders and decoders. Even when in practice 32-bit\n * encoders and decoders only support up to 30 max distance bits, the value is\n * set to 62 because it affects the large window brotli file format.\n * Specifically, it affects the encoding of simple huffman tree for distances,\n * see Specification RFC 7932 chapter 3.4.\n */\n#define BROTLI_LARGE_MAX_DISTANCE_BITS 62U\n#define BROTLI_LARGE_MIN_WBITS 10\n/**\n * The maximum supported large brotli window bits by the encoder and decoder.\n * Large window brotli allows up to 62 bits, however the current encoder and\n * decoder, designed for 32-bit integers, only support up to 30 bits maximum.\n */\n#define BROTLI_LARGE_MAX_WBITS 30\n\n/* Specification: 4. Encoding of distances */\n#define BROTLI_NUM_DISTANCE_SHORT_CODES 16\n/**\n * Maximal number of \"postfix\" bits.\n *\n * Number of \"postfix\" bits is stored as 2 bits in meta-block header.\n */\n#define BROTLI_MAX_NPOSTFIX 3\n#define BROTLI_MAX_NDIRECT 120\n#define BROTLI_MAX_DISTANCE_BITS 24U\n#define BROTLI_DISTANCE_ALPHABET_SIZE(NPOSTFIX, NDIRECT, MAXNBITS) ( \\\n BROTLI_NUM_DISTANCE_SHORT_CODES + (NDIRECT) + \\\n ((MAXNBITS) << ((NPOSTFIX) + 1)))\n/* BROTLI_NUM_DISTANCE_SYMBOLS == 1128 */\n#define BROTLI_NUM_DISTANCE_SYMBOLS \\\n BROTLI_DISTANCE_ALPHABET_SIZE( \\\n BROTLI_MAX_NDIRECT, BROTLI_MAX_NPOSTFIX, BROTLI_LARGE_MAX_DISTANCE_BITS)\n\n/* ((1 << 26) - 4) is the maximal distance that can be expressed in RFC 7932\n brotli stream using NPOSTFIX = 0 and NDIRECT = 0. With other NPOSTFIX and\n NDIRECT values distances up to ((1 << 29) + 88) could be expressed. */\n#define BROTLI_MAX_DISTANCE 0x3FFFFFC\n\n/* ((1 << 31) - 4) is the safe distance limit. Using this number as a limit\n allows safe distance calculation without overflows, given the distance\n alphabet size is limited to corresponding size\n (see kLargeWindowDistanceCodeLimits). */\n#define BROTLI_MAX_ALLOWED_DISTANCE 0x7FFFFFFC\n\n\n/* Specification: 4. Encoding of Literal Insertion Lengths and Copy Lengths */\n#define BROTLI_NUM_INS_COPY_CODES 24\n\n/* 7.1. Context modes and context ID lookup for literals */\n/* \"context IDs for literals are in the range of 0..63\" */\n#define BROTLI_LITERAL_CONTEXT_BITS 6\n\n/* 7.2. Context ID for distances */\n#define BROTLI_DISTANCE_CONTEXT_BITS 2\n\n/* 9.1. Format of the Stream Header */\n/* Number of slack bytes for window size. Don't confuse\n with BROTLI_NUM_DISTANCE_SHORT_CODES. */\n#define BROTLI_WINDOW_GAP 16\n#define BROTLI_MAX_BACKWARD_LIMIT(W) (((size_t)1 << (W)) - BROTLI_WINDOW_GAP)\n\ntypedef struct BrotliDistanceCodeLimit {\n uint32_t max_alphabet_size;\n uint32_t max_distance;\n} BrotliDistanceCodeLimit;\n\n/* This function calculates maximal size of distance alphabet, such that the\n distances greater than the given values can not be represented.\n\n This limits are designed to support fast and safe 32-bit decoders.\n \"32-bit\" means that signed integer values up to ((1 << 31) - 1) could be\n safely expressed.\n\n Brotli distance alphabet symbols do not represent consecutive distance\n ranges. Each distance alphabet symbol (excluding direct distances and short\n codes), represent interleaved (for NPOSTFIX > 0) range of distances.\n A \"group\" of consecutive (1 << NPOSTFIX) symbols represent non-interleaved\n range. Two consecutive groups require the same amount of \"extra bits\".\n\n It is important that distance alphabet represents complete \"groups\".\n To avoid complex logic on encoder side about interleaved ranges\n it was decided to restrict both sides to complete distance code \"groups\".\n */\nBROTLI_UNUSED_FUNCTION BrotliDistanceCodeLimit BrotliCalculateDistanceCodeLimit(\n uint32_t max_distance, uint32_t npostfix, uint32_t ndirect) {\n BrotliDistanceCodeLimit result;\n /* Marking this function as unused, because not all files\n including \"constants.h\" use it -> compiler warns about that. */\n BROTLI_UNUSED(&BrotliCalculateDistanceCodeLimit);\n if (max_distance <= ndirect) {\n /* This case never happens / exists only for the sake of completeness. */\n result.max_alphabet_size = max_distance + BROTLI_NUM_DISTANCE_SHORT_CODES;\n result.max_distance = max_distance;\n return result;\n } else {\n /* The first prohibited value. */\n uint32_t forbidden_distance = max_distance + 1;\n /* Subtract \"directly\" encoded region. */\n uint32_t offset = forbidden_distance - ndirect - 1;\n uint32_t ndistbits = 0;\n uint32_t tmp;\n uint32_t half;\n uint32_t group;\n /* Postfix for the last dcode in the group. */\n uint32_t postfix = (1u << npostfix) - 1;\n uint32_t extra;\n uint32_t start;\n /* Remove postfix and \"head-start\". */\n offset = (offset >> npostfix) + 4;\n /* Calculate the number of distance bits. */\n tmp = offset / 2;\n /* Poor-man's log2floor, to avoid extra dependencies. */\n while (tmp != 0) {ndistbits++; tmp = tmp >> 1;}\n /* One bit is covered with subrange addressing (\"half\"). */\n ndistbits--;\n /* Find subrange. */\n half = (offset >> ndistbits) & 1;\n /* Calculate the \"group\" part of dcode. */\n group = ((ndistbits - 1) << 1) | half;\n /* Calculated \"group\" covers the prohibited distance value. */\n if (group == 0) {\n /* This case is added for correctness; does not occur for limit > 128. */\n result.max_alphabet_size = ndirect + BROTLI_NUM_DISTANCE_SHORT_CODES;\n result.max_distance = ndirect;\n return result;\n }\n /* Decrement \"group\", so it is the last permitted \"group\". */\n group--;\n /* After group was decremented, ndistbits and half must be recalculated. */\n ndistbits = (group >> 1) + 1;\n /* The last available distance in the subrange has all extra bits set. */\n extra = (1u << ndistbits) - 1;\n /* Calculate region start. NB: ndistbits >= 1. */\n start = (1u << (ndistbits + 1)) - 4;\n /* Move to subregion. */\n start += (group & 1) << ndistbits;\n /* Calculate the alphabet size. */\n result.max_alphabet_size = ((group << npostfix) | postfix) + ndirect +\n BROTLI_NUM_DISTANCE_SHORT_CODES + 1;\n /* Calculate the maximal distance representable by alphabet. */\n result.max_distance = ((start + extra) << npostfix) + postfix + ndirect + 1;\n return result;\n }\n}\n\n/* Represents the range of values belonging to a prefix code:\n [offset, offset + 2^nbits) */\ntypedef struct {\n uint16_t offset;\n uint8_t nbits;\n} BrotliPrefixCodeRange;\n\n/* \"Soft-private\", it is exported, but not \"advertised\" as API. */\nBROTLI_COMMON_API extern const BROTLI_MODEL(\"small\")\nBrotliPrefixCodeRange _kBrotliPrefixCodeRanges[BROTLI_NUM_BLOCK_LEN_SYMBOLS];\n\n#endif /* BROTLI_COMMON_CONSTANTS_H_ */\n" }, { "path": "c/common/context.c", "content": "#include \"context.h\"\n\n#include \"platform.h\"\n\n/* Common context lookup table for all context modes. */\nconst BROTLI_MODEL(\"small\") uint8_t _kBrotliContextLookupTable[2048] = {\n /* CONTEXT_LSB6, last byte. */\n 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,\n 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,\n 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,\n 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,\n 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,\n 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,\n 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,\n 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,\n 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,\n 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,\n 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,\n 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,\n\n /* CONTEXT_LSB6, second last byte, */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n\n /* CONTEXT_MSB6, last byte. */\n 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,\n 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7,\n 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11,\n 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15,\n 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19,\n 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23,\n 24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27,\n 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31,\n 32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 35, 35, 35, 35,\n 36, 36, 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 39, 39, 39, 39,\n 40, 40, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 43, 43, 43, 43,\n 44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47,\n 48, 48, 48, 48, 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51,\n 52, 52, 52, 52, 53, 53, 53, 53, 54, 54, 54, 54, 55, 55, 55, 55,\n 56, 56, 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59,\n 60, 60, 60, 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63, 63,\n\n /* CONTEXT_MSB6, second last byte, */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n\n /* CONTEXT_UTF8, last byte. */\n /* ASCII range. */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 4, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 8, 12, 16, 12, 12, 20, 12, 16, 24, 28, 12, 12, 32, 12, 36, 12,\n 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 32, 32, 24, 40, 28, 12,\n 12, 48, 52, 52, 52, 48, 52, 52, 52, 48, 52, 52, 52, 52, 52, 48,\n 52, 52, 52, 52, 52, 48, 52, 52, 52, 52, 52, 24, 12, 28, 12, 12,\n 12, 56, 60, 60, 60, 56, 60, 60, 60, 56, 60, 60, 60, 60, 60, 56,\n 60, 60, 60, 60, 60, 56, 60, 60, 60, 60, 60, 24, 12, 28, 12, 0,\n /* UTF8 continuation byte range. */\n 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,\n 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,\n 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,\n 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,\n /* UTF8 lead byte range. */\n 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,\n 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,\n 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,\n 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,\n\n /* CONTEXT_UTF8 second last byte. */\n /* ASCII range. */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1,\n 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1,\n 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,\n 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 0,\n /* UTF8 continuation byte range. */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n /* UTF8 lead byte range. */\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n\n /* CONTEXT_SIGNED, last byte, same as the above values shifted by 3 bits. */\n 0, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,\n 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,\n 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,\n 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,\n 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,\n 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,\n 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,\n 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,\n 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,\n 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,\n 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 56,\n\n /* CONTEXT_SIGNED, second last byte. */\n 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,\n 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,\n 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,\n 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,\n 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,\n 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,\n 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,\n 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,\n 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,\n 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,\n 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,\n 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,\n 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7,\n};\n" }, { "path": "c/common/context.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Lookup table to map the previous two bytes to a context id.\n\n There are four different context modeling modes defined here:\n CONTEXT_LSB6: context id is the least significant 6 bits of the last byte,\n CONTEXT_MSB6: context id is the most significant 6 bits of the last byte,\n CONTEXT_UTF8: second-order context model tuned for UTF8-encoded text,\n CONTEXT_SIGNED: second-order context model tuned for signed integers.\n\n If |p1| and |p2| are the previous two bytes, and |mode| is current context\n mode, we calculate the context as:\n\n context = ContextLut(mode)[p1] | ContextLut(mode)[p2 + 256].\n\n For CONTEXT_UTF8 mode, if the previous two bytes are ASCII characters\n (i.e. < 128), this will be equivalent to\n\n context = 4 * context1(p1) + context2(p2),\n\n where context1 is based on the previous byte in the following way:\n\n 0 : non-ASCII control\n 1 : \\t, \\n, \\r\n 2 : space\n 3 : other punctuation\n 4 : \" '\n 5 : %\n 6 : ( < [ {\n 7 : ) > ] }\n 8 : , ; :\n 9 : .\n 10 : =\n 11 : number\n 12 : upper-case vowel\n 13 : upper-case consonant\n 14 : lower-case vowel\n 15 : lower-case consonant\n\n and context2 is based on the second last byte:\n\n 0 : control, space\n 1 : punctuation\n 2 : upper-case letter, number\n 3 : lower-case letter\n\n If the last byte is ASCII, and the second last byte is not (in a valid UTF8\n stream it will be a continuation byte, value between 128 and 191), the\n context is the same as if the second last byte was an ASCII control or space.\n\n If the last byte is a UTF8 lead byte (value >= 192), then the next byte will\n be a continuation byte and the context id is 2 or 3 depending on the LSB of\n the last byte and to a lesser extent on the second last byte if it is ASCII.\n\n If the last byte is a UTF8 continuation byte, the second last byte can be:\n - continuation byte: the next byte is probably ASCII or lead byte (assuming\n 4-byte UTF8 characters are rare) and the context id is 0 or 1.\n - lead byte (192 - 207): next byte is ASCII or lead byte, context is 0 or 1\n - lead byte (208 - 255): next byte is continuation byte, context is 2 or 3\n\n The possible value combinations of the previous two bytes, the range of\n context ids and the type of the next byte is summarized in the table below:\n\n |--------\\-----------------------------------------------------------------|\n | \\ Last byte |\n | Second \\---------------------------------------------------------------|\n | last byte \\ ASCII | cont. byte | lead byte |\n | \\ (0-127) | (128-191) | (192-) |\n |=============|===================|=====================|==================|\n | ASCII | next: ASCII/lead | not valid | next: cont. |\n | (0-127) | context: 4 - 63 | | context: 2 - 3 |\n |-------------|-------------------|---------------------|------------------|\n | cont. byte | next: ASCII/lead | next: ASCII/lead | next: cont. |\n | (128-191) | context: 4 - 63 | context: 0 - 1 | context: 2 - 3 |\n |-------------|-------------------|---------------------|------------------|\n | lead byte | not valid | next: ASCII/lead | not valid |\n | (192-207) | | context: 0 - 1 | |\n |-------------|-------------------|---------------------|------------------|\n | lead byte | not valid | next: cont. | not valid |\n | (208-) | | context: 2 - 3 | |\n |-------------|-------------------|---------------------|------------------|\n*/\n\n#ifndef BROTLI_COMMON_CONTEXT_H_\n#define BROTLI_COMMON_CONTEXT_H_\n\n#include \"platform.h\"\n\ntypedef enum ContextType {\n CONTEXT_LSB6 = 0,\n CONTEXT_MSB6 = 1,\n CONTEXT_UTF8 = 2,\n CONTEXT_SIGNED = 3\n} ContextType;\n\n/* \"Soft-private\", it is exported, but not \"advertised\" as API. */\n/* Common context lookup table for all context modes. */\nBROTLI_COMMON_API extern const uint8_t _kBrotliContextLookupTable[2048];\n\ntypedef const uint8_t* ContextLut;\n\n/* typeof(MODE) == ContextType; returns ContextLut */\n#define BROTLI_CONTEXT_LUT(MODE) (&_kBrotliContextLookupTable[(MODE) << 9])\n\n/* typeof(LUT) == ContextLut */\n#define BROTLI_CONTEXT(P1, P2, LUT) ((LUT)[P1] | ((LUT) + 256)[P2])\n\n#endif /* BROTLI_COMMON_CONTEXT_H_ */\n" }, { "path": "c/common/dictionary.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"dictionary.h\"\n#include \"platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if !defined(BROTLI_EXTERNAL_DICTIONARY_DATA)\n/* Embed kBrotliDictionaryData */\n#include \"dictionary_inc.h\"\nstatic const BROTLI_MODEL(\"small\") BrotliDictionary kBrotliDictionary = {\n#else\nstatic BROTLI_MODEL(\"small\") BrotliDictionary kBrotliDictionary = {\n#endif\n /* size_bits_by_length */\n {\n 0, 0, 0, 0, 10, 10, 11, 11,\n 10, 10, 10, 10, 10, 9, 9, 8,\n 7, 7, 8, 7, 7, 6, 6, 5,\n 5, 0, 0, 0, 0, 0, 0, 0\n },\n\n /* offsets_by_length */\n {\n 0, 0, 0, 0, 0, 4096, 9216, 21504,\n 35840, 44032, 53248, 63488, 74752, 87040, 93696, 100864,\n 104704, 106752, 108928, 113536, 115968, 118528, 119872, 121280,\n 122016, 122784, 122784, 122784, 122784, 122784, 122784, 122784\n },\n\n /* data_size == sizeof(kBrotliDictionaryData) */\n 122784,\n\n /* data */\n#if defined(BROTLI_EXTERNAL_DICTIONARY_DATA)\n NULL\n#else\n kBrotliDictionaryData\n#endif\n};\n\nconst BrotliDictionary* BrotliGetDictionary(void) {\n return &kBrotliDictionary;\n}\n\nvoid BrotliSetDictionaryData(const uint8_t* data) {\n#if defined(BROTLI_EXTERNAL_DICTIONARY_DATA)\n if (!!data && !kBrotliDictionary.data) {\n kBrotliDictionary.data = data;\n }\n#else\n BROTLI_UNUSED(data); // Appease -Werror=unused-parameter\n#endif\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/common/dictionary.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Collection of static dictionary words. */\n\n#ifndef BROTLI_COMMON_DICTIONARY_H_\n#define BROTLI_COMMON_DICTIONARY_H_\n\n#include \"platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct BrotliDictionary {\n /**\n * Number of bits to encode index of dictionary word in a bucket.\n *\n * Specification: Appendix A. Static Dictionary Data\n *\n * Words in a dictionary are bucketed by length.\n * @c 0 means that there are no words of a given length.\n * Dictionary consists of words with length of [4..24] bytes.\n * Values at [0..3] and [25..31] indices should not be addressed.\n */\n uint8_t size_bits_by_length[32];\n\n /* assert(offset[i + 1] == offset[i] + (bits[i] ? (i << bits[i]) : 0)) */\n uint32_t offsets_by_length[32];\n\n /* assert(data_size == offsets_by_length[31]) */\n size_t data_size;\n\n /* Data array is not bound, and should obey to size_bits_by_length values.\n Specified size matches default (RFC 7932) dictionary. Its size is\n defined by data_size */\n const uint8_t* data;\n} BrotliDictionary;\n\nBROTLI_COMMON_API const BrotliDictionary* BrotliGetDictionary(void);\n\n/**\n * Sets dictionary data.\n *\n * When dictionary data is already set / present, this method is no-op.\n *\n * Dictionary data MUST be provided before BrotliGetDictionary is invoked.\n * This method is used ONLY in multi-client environment (e.g. C + Java),\n * to reduce storage by sharing single dictionary between implementations.\n */\nBROTLI_COMMON_API void BrotliSetDictionaryData(const uint8_t* data);\n\n#define BROTLI_MIN_DICTIONARY_WORD_LENGTH 4\n#define BROTLI_MAX_DICTIONARY_WORD_LENGTH 24\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_COMMON_DICTIONARY_H_ */\n" }, { "path": "c/common/dictionary_inc.h", "content": "static const BROTLI_MODEL(\"small\") uint8_t kBrotliDictionaryData[] = {\n116,105,109,101,100,111,119,110,108,105,102,101,108,101,102,116,98,97,99,107,99,\n111,100,101,100,97,116,97,115,104,111,119,111,110,108,121,115,105,116,101,99,105\n,116,121,111,112,101,110,106,117,115,116,108,105,107,101,102,114,101,101,119,111\n,114,107,116,101,120,116,121,101,97,114,111,118,101,114,98,111,100,121,108,111,\n118,101,102,111,114,109,98,111,111,107,112,108,97,121,108,105,118,101,108,105,\n110,101,104,101,108,112,104,111,109,101,115,105,100,101,109,111,114,101,119,111,\n114,100,108,111,110,103,116,104,101,109,118,105,101,119,102,105,110,100,112,97,\n103,101,100,97,121,115,102,117,108,108,104,101,97,100,116,101,114,109,101,97,99,\n104,97,114,101,97,102,114,111,109,116,114,117,101,109,97,114,107,97,98,108,101,\n117,112,111,110,104,105,103,104,100,97,116,101,108,97,110,100,110,101,119,115,\n101,118,101,110,110,101,120,116,99,97,115,101,98,111,116,104,112,111,115,116,117\n,115,101,100,109,97,100,101,104,97,110,100,104,101,114,101,119,104,97,116,110,97\n,109,101,76,105,110,107,98,108,111,103,115,105,122,101,98,97,115,101,104,101,108\n,100,109,97,107,101,109,97,105,110,117,115,101,114,39,41,32,43,104,111,108,100,\n101,110,100,115,119,105,116,104,78,101,119,115,114,101,97,100,119,101,114,101,\n115,105,103,110,116,97,107,101,104,97,118,101,103,97,109,101,115,101,101,110,99,\n97,108,108,112,97,116,104,119,101,108,108,112,108,117,115,109,101,110,117,102,\n105,108,109,112,97,114,116,106,111,105,110,116,104,105,115,108,105,115,116,103,\n111,111,100,110,101,101,100,119,97,121,115,119,101,115,116,106,111,98,115,109,\n105,110,100,97,108,115,111,108,111,103,111,114,105,99,104,117,115,101,115,108,97\n,115,116,116,101,97,109,97,114,109,121,102,111,111,100,107,105,110,103,119,105,\n108,108,101,97,115,116,119,97,114,100,98,101,115,116,102,105,114,101,80,97,103,\n101,107,110,111,119,97,119,97,121,46,112,110,103,109,111,118,101,116,104,97,110,\n108,111,97,100,103,105,118,101,115,101,108,102,110,111,116,101,109,117,99,104,\n102,101,101,100,109,97,110,121,114,111,99,107,105,99,111,110,111,110,99,101,108,\n111,111,107,104,105,100,101,100,105,101,100,72,111,109,101,114,117,108,101,104,\n111,115,116,97,106,97,120,105,110,102,111,99,108,117,98,108,97,119,115,108,101,\n115,115,104,97,108,102,115,111,109,101,115,117,99,104,122,111,110,101,49,48,48,\n37,111,110,101,115,99,97,114,101,84,105,109,101,114,97,99,101,98,108,117,101,102\n,111,117,114,119,101,101,107,102,97,99,101,104,111,112,101,103,97,118,101,104,97\n,114,100,108,111,115,116,119,104,101,110,112,97,114,107,107,101,112,116,112,97,\n115,115,115,104,105,112,114,111,111,109,72,84,77,76,112,108,97,110,84,121,112,\n101,100,111,110,101,115,97,118,101,107,101,101,112,102,108,97,103,108,105,110,\n107,115,111,108,100,102,105,118,101,116,111,111,107,114,97,116,101,116,111,119,\n110,106,117,109,112,116,104,117,115,100,97,114,107,99,97,114,100,102,105,108,101\n,102,101,97,114,115,116,97,121,107,105,108,108,116,104,97,116,102,97,108,108,97,\n117,116,111,101,118,101,114,46,99,111,109,116,97,108,107,115,104,111,112,118,111\n,116,101,100,101,101,112,109,111,100,101,114,101,115,116,116,117,114,110,98,111,\n114,110,98,97,110,100,102,101,108,108,114,111,115,101,117,114,108,40,115,107,105\n,110,114,111,108,101,99,111,109,101,97,99,116,115,97,103,101,115,109,101,101,116\n,103,111,108,100,46,106,112,103,105,116,101,109,118,97,114,121,102,101,108,116,\n116,104,101,110,115,101,110,100,100,114,111,112,86,105,101,119,99,111,112,121,49\n,46,48,34,60,47,97,62,115,116,111,112,101,108,115,101,108,105,101,115,116,111,\n117,114,112,97,99,107,46,103,105,102,112,97,115,116,99,115,115,63,103,114,97,121\n,109,101,97,110,38,103,116,59,114,105,100,101,115,104,111,116,108,97,116,101,115\n,97,105,100,114,111,97,100,118,97,114,32,102,101,101,108,106,111,104,110,114,105\n,99,107,112,111,114,116,102,97,115,116,39,85,65,45,100,101,97,100,60,47,98,62,\n112,111,111,114,98,105,108,108,116,121,112,101,85,46,83,46,119,111,111,100,109,\n117,115,116,50,112,120,59,73,110,102,111,114,97,110,107,119,105,100,101,119,97,\n110,116,119,97,108,108,108,101,97,100,91,48,93,59,112,97,117,108,119,97,118,101,\n115,117,114,101,36,40,39,35,119,97,105,116,109,97,115,115,97,114,109,115,103,111\n,101,115,103,97,105,110,108,97,110,103,112,97,105,100,33,45,45,32,108,111,99,107\n,117,110,105,116,114,111,111,116,119,97,108,107,102,105,114,109,119,105,102,101,\n120,109,108,34,115,111,110,103,116,101,115,116,50,48,112,120,107,105,110,100,114\n,111,119,115,116,111,111,108,102,111,110,116,109,97,105,108,115,97,102,101,115,\n116,97,114,109,97,112,115,99,111,114,101,114,97,105,110,102,108,111,119,98,97,98\n,121,115,112,97,110,115,97,121,115,52,112,120,59,54,112,120,59,97,114,116,115,\n102,111,111,116,114,101,97,108,119,105,107,105,104,101,97,116,115,116,101,112,\n116,114,105,112,111,114,103,47,108,97,107,101,119,101,97,107,116,111,108,100,70,\n111,114,109,99,97,115,116,102,97,110,115,98,97,110,107,118,101,114,121,114,117,\n110,115,106,117,108,121,116,97,115,107,49,112,120,59,103,111,97,108,103,114,101,\n119,115,108,111,119,101,100,103,101,105,100,61,34,115,101,116,115,53,112,120,59,\n46,106,115,63,52,48,112,120,105,102,32,40,115,111,111,110,115,101,97,116,110,111\n,110,101,116,117,98,101,122,101,114,111,115,101,110,116,114,101,101,100,102,97,\n99,116,105,110,116,111,103,105,102,116,104,97,114,109,49,56,112,120,99,97,109,\n101,104,105,108,108,98,111,108,100,122,111,111,109,118,111,105,100,101,97,115,\n121,114,105,110,103,102,105,108,108,112,101,97,107,105,110,105,116,99,111,115,\n116,51,112,120,59,106,97,99,107,116,97,103,115,98,105,116,115,114,111,108,108,\n101,100,105,116,107,110,101,119,110,101,97,114,60,33,45,45,103,114,111,119,74,83\n,79,78,100,117,116,121,78,97,109,101,115,97,108,101,121,111,117,32,108,111,116,\n115,112,97,105,110,106,97,122,122,99,111,108,100,101,121,101,115,102,105,115,104\n,119,119,119,46,114,105,115,107,116,97,98,115,112,114,101,118,49,48,112,120,114,\n105,115,101,50,53,112,120,66,108,117,101,100,105,110,103,51,48,48,44,98,97,108,\n108,102,111,114,100,101,97,114,110,119,105,108,100,98,111,120,46,102,97,105,114,\n108,97,99,107,118,101,114,115,112,97,105,114,106,117,110,101,116,101,99,104,105,\n102,40,33,112,105,99,107,101,118,105,108,36,40,34,35,119,97,114,109,108,111,114,\n100,100,111,101,115,112,117,108,108,44,48,48,48,105,100,101,97,100,114,97,119,\n104,117,103,101,115,112,111,116,102,117,110,100,98,117,114,110,104,114,101,102,\n99,101,108,108,107,101,121,115,116,105,99,107,104,111,117,114,108,111,115,115,\n102,117,101,108,49,50,112,120,115,117,105,116,100,101,97,108,82,83,83,34,97,103,\n101,100,103,114,101,121,71,69,84,34,101,97,115,101,97,105,109,115,103,105,114,\n108,97,105,100,115,56,112,120,59,110,97,118,121,103,114,105,100,116,105,112,115,\n35,57,57,57,119,97,114,115,108,97,100,121,99,97,114,115,41,59,32,125,112,104,112\n,63,104,101,108,108,116,97,108,108,119,104,111,109,122,104,58,229,42,47,13,10,32\n,49,48,48,104,97,108,108,46,10,10,65,55,112,120,59,112,117,115,104,99,104,97,116\n,48,112,120,59,99,114,101,119,42,47,60,47,104,97,115,104,55,53,112,120,102,108,\n97,116,114,97,114,101,32,38,38,32,116,101,108,108,99,97,109,112,111,110,116,111,\n108,97,105,100,109,105,115,115,115,107,105,112,116,101,110,116,102,105,110,101,\n109,97,108,101,103,101,116,115,112,108,111,116,52,48,48,44,13,10,13,10,99,111,\n111,108,102,101,101,116,46,112,104,112,60,98,114,62,101,114,105,99,109,111,115,\n116,103,117,105,100,98,101,108,108,100,101,115,99,104,97,105,114,109,97,116,104,\n97,116,111,109,47,105,109,103,38,35,56,50,108,117,99,107,99,101,110,116,48,48,48\n,59,116,105,110,121,103,111,110,101,104,116,109,108,115,101,108,108,100,114,117,\n103,70,82,69,69,110,111,100,101,110,105,99,107,63,105,100,61,108,111,115,101,110\n,117,108,108,118,97,115,116,119,105,110,100,82,83,83,32,119,101,97,114,114,101,\n108,121,98,101,101,110,115,97,109,101,100,117,107,101,110,97,115,97,99,97,112,\n101,119,105,115,104,103,117,108,102,84,50,51,58,104,105,116,115,115,108,111,116,\n103,97,116,101,107,105,99,107,98,108,117,114,116,104,101,121,49,53,112,120,39,39\n,41,59,41,59,34,62,109,115,105,101,119,105,110,115,98,105,114,100,115,111,114,\n116,98,101,116,97,115,101,101,107,84,49,56,58,111,114,100,115,116,114,101,101,\n109,97,108,108,54,48,112,120,102,97,114,109,226,128,153,115,98,111,121,115,91,48\n,93,46,39,41,59,34,80,79,83,84,98,101,97,114,107,105,100,115,41,59,125,125,109,\n97,114,121,116,101,110,100,40,85,75,41,113,117,97,100,122,104,58,230,45,115,105,\n122,45,45,45,45,112,114,111,112,39,41,59,13,108,105,102,116,84,49,57,58,118,105,\n99,101,97,110,100,121,100,101,98,116,62,82,83,83,112,111,111,108,110,101,99,107,\n98,108,111,119,84,49,54,58,100,111,111,114,101,118,97,108,84,49,55,58,108,101,\n116,115,102,97,105,108,111,114,97,108,112,111,108,108,110,111,118,97,99,111,108,\n115,103,101,110,101,32,226,128,148,115,111,102,116,114,111,109,101,116,105,108,\n108,114,111,115,115,60,104,51,62,112,111,117,114,102,97,100,101,112,105,110,107,\n60,116,114,62,109,105,110,105,41,124,33,40,109,105,110,101,122,104,58,232,98,97,\n114,115,104,101,97,114,48,48,41,59,109,105,108,107,32,45,45,62,105,114,111,110,\n102,114,101,100,100,105,115,107,119,101,110,116,115,111,105,108,112,117,116,115,\n47,106,115,47,104,111,108,121,84,50,50,58,73,83,66,78,84,50,48,58,97,100,97,109,\n115,101,101,115,60,104,50,62,106,115,111,110,39,44,32,39,99,111,110,116,84,50,49\n,58,32,82,83,83,108,111,111,112,97,115,105,97,109,111,111,110,60,47,112,62,115,\n111,117,108,76,73,78,69,102,111,114,116,99,97,114,116,84,49,52,58,60,104,49,62,\n56,48,112,120,33,45,45,60,57,112,120,59,84,48,52,58,109,105,107,101,58,52,54,90,\n110,105,99,101,105,110,99,104,89,111,114,107,114,105,99,101,122,104,58,228,39,41\n,41,59,112,117,114,101,109,97,103,101,112,97,114,97,116,111,110,101,98,111,110,\n100,58,51,55,90,95,111,102,95,39,93,41,59,48,48,48,44,122,104,58,231,116,97,110,\n107,121,97,114,100,98,111,119,108,98,117,115,104,58,53,54,90,74,97,118,97,51,48,\n112,120,10,124,125,10,37,67,51,37,58,51,52,90,106,101,102,102,69,88,80,73,99,97,\n115,104,118,105,115,97,103,111,108,102,115,110,111,119,122,104,58,233,113,117,\n101,114,46,99,115,115,115,105,99,107,109,101,97,116,109,105,110,46,98,105,110,\n100,100,101,108,108,104,105,114,101,112,105,99,115,114,101,110,116,58,51,54,90,\n72,84,84,80,45,50,48,49,102,111,116,111,119,111,108,102,69,78,68,32,120,98,111,\n120,58,53,52,90,66,79,68,89,100,105,99,107,59,10,125,10,101,120,105,116,58,51,53\n,90,118,97,114,115,98,101,97,116,39,125,41,59,100,105,101,116,57,57,57,59,97,110\n,110,101,125,125,60,47,91,105,93,46,76,97,110,103,107,109,194,178,119,105,114,\n101,116,111,121,115,97,100,100,115,115,101,97,108,97,108,101,120,59,10,9,125,101\n,99,104,111,110,105,110,101,46,111,114,103,48,48,53,41,116,111,110,121,106,101,\n119,115,115,97,110,100,108,101,103,115,114,111,111,102,48,48,48,41,32,50,48,48,\n119,105,110,101,103,101,97,114,100,111,103,115,98,111,111,116,103,97,114,121,99,\n117,116,115,116,121,108,101,116,101,109,112,116,105,111,110,46,120,109,108,99,\n111,99,107,103,97,110,103,36,40,39,46,53,48,112,120,80,104,46,68,109,105,115,99,\n97,108,97,110,108,111,97,110,100,101,115,107,109,105,108,101,114,121,97,110,117,\n110,105,120,100,105,115,99,41,59,125,10,100,117,115,116,99,108,105,112,41,46,10,\n10,55,48,112,120,45,50,48,48,68,86,68,115,55,93,62,60,116,97,112,101,100,101,109\n,111,105,43,43,41,119,97,103,101,101,117,114,111,112,104,105,108,111,112,116,115\n,104,111,108,101,70,65,81,115,97,115,105,110,45,50,54,84,108,97,98,115,112,101,\n116,115,85,82,76,32,98,117,108,107,99,111,111,107,59,125,13,10,72,69,65,68,91,48\n,93,41,97,98,98,114,106,117,97,110,40,49,57,56,108,101,115,104,116,119,105,110,\n60,47,105,62,115,111,110,121,103,117,121,115,102,117,99,107,112,105,112,101,124,\n45,10,33,48,48,50,41,110,100,111,119,91,49,93,59,91,93,59,10,76,111,103,32,115,\n97,108,116,13,10,9,9,98,97,110,103,116,114,105,109,98,97,116,104,41,123,13,10,48\n,48,112,120,10,125,41,59,107,111,58,236,102,101,101,115,97,100,62,13,115,58,47,\n47,32,91,93,59,116,111,108,108,112,108,117,103,40,41,123,10,123,13,10,32,46,106,\n115,39,50,48,48,112,100,117,97,108,98,111,97,116,46,74,80,71,41,59,10,125,113,\n117,111,116,41,59,10,10,39,41,59,10,13,10,125,13,50,48,49,52,50,48,49,53,50,48,\n49,54,50,48,49,55,50,48,49,56,50,48,49,57,50,48,50,48,50,48,50,49,50,48,50,50,50\n,48,50,51,50,48,50,52,50,48,50,53,50,48,50,54,50,48,50,55,50,48,50,56,50,48,50,\n57,50,48,51,48,50,48,51,49,50,48,51,50,50,48,51,51,50,48,51,52,50,48,51,53,50,48\n,51,54,50,48,51,55,50,48,49,51,50,48,49,50,50,48,49,49,50,48,49,48,50,48,48,57,\n50,48,48,56,50,48,48,55,50,48,48,54,50,48,48,53,50,48,48,52,50,48,48,51,50,48,48\n,50,50,48,48,49,50,48,48,48,49,57,57,57,49,57,57,56,49,57,57,55,49,57,57,54,49,\n57,57,53,49,57,57,52,49,57,57,51,49,57,57,50,49,57,57,49,49,57,57,48,49,57,56,57\n,49,57,56,56,49,57,56,55,49,57,56,54,49,57,56,53,49,57,56,52,49,57,56,51,49,57,\n56,50,49,57,56,49,49,57,56,48,49,57,55,57,49,57,55,56,49,57,55,55,49,57,55,54,49\n,57,55,53,49,57,55,52,49,57,55,51,49,57,55,50,49,57,55,49,49,57,55,48,49,57,54,\n57,49,57,54,56,49,57,54,55,49,57,54,54,49,57,54,53,49,57,54,52,49,57,54,51,49,57\n,54,50,49,57,54,49,49,57,54,48,49,57,53,57,49,57,53,56,49,57,53,55,49,57,53,54,\n49,57,53,53,49,57,53,52,49,57,53,51,49,57,53,50,49,57,53,49,49,57,53,48,49,48,48\n,48,49,48,50,52,49,51,57,52,48,48,48,48,57,57,57,57,99,111,109,111,109,195,161,\n115,101,115,116,101,101,115,116,97,112,101,114,111,116,111,100,111,104,97,99,101\n,99,97,100,97,97,195,177,111,98,105,101,110,100,195,173,97,97,115,195,173,118,\n105,100,97,99,97,115,111,111,116,114,111,102,111,114,111,115,111,108,111,111,116\n,114,97,99,117,97,108,100,105,106,111,115,105,100,111,103,114,97,110,116,105,112\n,111,116,101,109,97,100,101,98,101,97,108,103,111,113,117,195,169,101,115,116,\n111,110,97,100,97,116,114,101,115,112,111,99,111,99,97,115,97,98,97,106,111,116,\n111,100,97,115,105,110,111,97,103,117,97,112,117,101,115,117,110,111,115,97,110,\n116,101,100,105,99,101,108,117,105,115,101,108,108,97,109,97,121,111,122,111,110\n,97,97,109,111,114,112,105,115,111,111,98,114,97,99,108,105,99,101,108,108,111,\n100,105,111,115,104,111,114,97,99,97,115,105,208,183,208,176,208,189,208,176,208\n,190,208,188,209,128,208,176,209,128,209,131,209,130,208,176,208,189,208,181,208\n,191,208,190,208,190,209,130,208,184,208,183,208,189,208,190,208,180,208,190,209\n,130,208,190,208,182,208,181,208,190,208,189,208,184,209,133,208,157,208,176,208\n,181,208,181,208,177,209,139,208,188,209,139,208,146,209,139,209,129,208,190,208\n,178,209,139,208,178,208,190,208,157,208,190,208,190,208,177,208,159,208,190,208\n,187,208,184,208,189,208,184,208,160,208,164,208,157,208,181,208,156,209,139,209\n,130,209,139,208,158,208,189,208,184,208,188,208,180,208,176,208,151,208,176,208\n,148,208,176,208,157,209,131,208,158,208,177,209,130,208,181,208,152,208,183,208\n,181,208,185,208,189,209,131,208,188,208,188,208,162,209,139,209,131,208,182,217\n,129,217,138,216,163,217,134,217,133,216,167,217,133,216,185,217,131,217,132,216\n,163,217,136,216,177,216,175,217,138,216,167,217,129,217,137,217,135,217,136,217\n,132,217,133,217,132,217,131,216,167,217,136,217,132,217,135,216,168,216,179,216\n,167,217,132,216,165,217,134,217,135,217,138,216,163,217,138,217,130,216,175,217\n,135,217,132,216,171,217,133,216,168,217,135,217,132,217,136,217,132,217,138,216\n,168,217,132,216,167,217,138,216,168,217,131,216,180,217,138,216,167,217,133,216\n,163,217,133,217,134,216,170,216,168,217,138,217,132,217,134,216,173,216,168,217\n,135,217,133,217,133,216,180,217,136,216,180,102,105,114,115,116,118,105,100,101\n,111,108,105,103,104,116,119,111,114,108,100,109,101,100,105,97,119,104,105,116,\n101,99,108,111,115,101,98,108,97,99,107,114,105,103,104,116,115,109,97,108,108,\n98,111,111,107,115,112,108,97,99,101,109,117,115,105,99,102,105,101,108,100,111,\n114,100,101,114,112,111,105,110,116,118,97,108,117,101,108,101,118,101,108,116,\n97,98,108,101,98,111,97,114,100,104,111,117,115,101,103,114,111,117,112,119,111,\n114,107,115,121,101,97,114,115,115,116,97,116,101,116,111,100,97,121,119,97,116,\n101,114,115,116,97,114,116,115,116,121,108,101,100,101,97,116,104,112,111,119,\n101,114,112,104,111,110,101,110,105,103,104,116,101,114,114,111,114,105,110,112,\n117,116,97,98,111,117,116,116,101,114,109,115,116,105,116,108,101,116,111,111,\n108,115,101,118,101,110,116,108,111,99,97,108,116,105,109,101,115,108,97,114,103\n,101,119,111,114,100,115,103,97,109,101,115,115,104,111,114,116,115,112,97,99,\n101,102,111,99,117,115,99,108,101,97,114,109,111,100,101,108,98,108,111,99,107,\n103,117,105,100,101,114,97,100,105,111,115,104,97,114,101,119,111,109,101,110,97\n,103,97,105,110,109,111,110,101,121,105,109,97,103,101,110,97,109,101,115,121,\n111,117,110,103,108,105,110,101,115,108,97,116,101,114,99,111,108,111,114,103,\n114,101,101,110,102,114,111,110,116,38,97,109,112,59,119,97,116,99,104,102,111,\n114,99,101,112,114,105,99,101,114,117,108,101,115,98,101,103,105,110,97,102,116,\n101,114,118,105,115,105,116,105,115,115,117,101,97,114,101,97,115,98,101,108,111\n,119,105,110,100,101,120,116,111,116,97,108,104,111,117,114,115,108,97,98,101,\n108,112,114,105,110,116,112,114,101,115,115,98,117,105,108,116,108,105,110,107,\n115,115,112,101,101,100,115,116,117,100,121,116,114,97,100,101,102,111,117,110,\n100,115,101,110,115,101,117,110,100,101,114,115,104,111,119,110,102,111,114,109,\n115,114,97,110,103,101,97,100,100,101,100,115,116,105,108,108,109,111,118,101,\n100,116,97,107,101,110,97,98,111,118,101,102,108,97,115,104,102,105,120,101,100,\n111,102,116,101,110,111,116,104,101,114,118,105,101,119,115,99,104,101,99,107,\n108,101,103,97,108,114,105,118,101,114,105,116,101,109,115,113,117,105,99,107,\n115,104,97,112,101,104,117,109,97,110,101,120,105,115,116,103,111,105,110,103,\n109,111,118,105,101,116,104,105,114,100,98,97,115,105,99,112,101,97,99,101,115,\n116,97,103,101,119,105,100,116,104,108,111,103,105,110,105,100,101,97,115,119,\n114,111,116,101,112,97,103,101,115,117,115,101,114,115,100,114,105,118,101,115,\n116,111,114,101,98,114,101,97,107,115,111,117,116,104,118,111,105,99,101,115,105\n,116,101,115,109,111,110,116,104,119,104,101,114,101,98,117,105,108,100,119,104,\n105,99,104,101,97,114,116,104,102,111,114,117,109,116,104,114,101,101,115,112,\n111,114,116,112,97,114,116,121,67,108,105,99,107,108,111,119,101,114,108,105,118\n,101,115,99,108,97,115,115,108,97,121,101,114,101,110,116,114,121,115,116,111,\n114,121,117,115,97,103,101,115,111,117,110,100,99,111,117,114,116,121,111,117,\n114,32,98,105,114,116,104,112,111,112,117,112,116,121,112,101,115,97,112,112,108\n,121,73,109,97,103,101,98,101,105,110,103,117,112,112,101,114,110,111,116,101,\n115,101,118,101,114,121,115,104,111,119,115,109,101,97,110,115,101,120,116,114,\n97,109,97,116,99,104,116,114,97,99,107,107,110,111,119,110,101,97,114,108,121,98\n,101,103,97,110,115,117,112,101,114,112,97,112,101,114,110,111,114,116,104,108,\n101,97,114,110,103,105,118,101,110,110,97,109,101,100,101,110,100,101,100,84,101\n,114,109,115,112,97,114,116,115,71,114,111,117,112,98,114,97,110,100,117,115,105\n,110,103,119,111,109,97,110,102,97,108,115,101,114,101,97,100,121,97,117,100,105\n,111,116,97,107,101,115,119,104,105,108,101,46,99,111,109,47,108,105,118,101,100\n,99,97,115,101,115,100,97,105,108,121,99,104,105,108,100,103,114,101,97,116,106,\n117,100,103,101,116,104,111,115,101,117,110,105,116,115,110,101,118,101,114,98,\n114,111,97,100,99,111,97,115,116,99,111,118,101,114,97,112,112,108,101,102,105,\n108,101,115,99,121,99,108,101,115,99,101,110,101,112,108,97,110,115,99,108,105,\n99,107,119,114,105,116,101,113,117,101,101,110,112,105,101,99,101,101,109,97,105\n,108,102,114,97,109,101,111,108,100,101,114,112,104,111,116,111,108,105,109,105,\n116,99,97,99,104,101,99,105,118,105,108,115,99,97,108,101,101,110,116,101,114,\n116,104,101,109,101,116,104,101,114,101,116,111,117,99,104,98,111,117,110,100,\n114,111,121,97,108,97,115,107,101,100,119,104,111,108,101,115,105,110,99,101,115\n,116,111,99,107,32,110,97,109,101,102,97,105,116,104,104,101,97,114,116,101,109,\n112,116,121,111,102,102,101,114,115,99,111,112,101,111,119,110,101,100,109,105,\n103,104,116,97,108,98,117,109,116,104,105,110,107,98,108,111,111,100,97,114,114,\n97,121,109,97,106,111,114,116,114,117,115,116,99,97,110,111,110,117,110,105,111,\n110,99,111,117,110,116,118,97,108,105,100,115,116,111,110,101,83,116,121,108,101\n,76,111,103,105,110,104,97,112,112,121,111,99,99,117,114,108,101,102,116,58,102,\n114,101,115,104,113,117,105,116,101,102,105,108,109,115,103,114,97,100,101,110,\n101,101,100,115,117,114,98,97,110,102,105,103,104,116,98,97,115,105,115,104,111,\n118,101,114,97,117,116,111,59,114,111,117,116,101,46,104,116,109,108,109,105,120\n,101,100,102,105,110,97,108,89,111,117,114,32,115,108,105,100,101,116,111,112,\n105,99,98,114,111,119,110,97,108,111,110,101,100,114,97,119,110,115,112,108,105,\n116,114,101,97,99,104,82,105,103,104,116,100,97,116,101,115,109,97,114,99,104,\n113,117,111,116,101,103,111,111,100,115,76,105,110,107,115,100,111,117,98,116,97\n,115,121,110,99,116,104,117,109,98,97,108,108,111,119,99,104,105,101,102,121,111\n,117,116,104,110,111,118,101,108,49,48,112,120,59,115,101,114,118,101,117,110,\n116,105,108,104,97,110,100,115,67,104,101,99,107,83,112,97,99,101,113,117,101,\n114,121,106,97,109,101,115,101,113,117,97,108,116,119,105,99,101,48,44,48,48,48,\n83,116,97,114,116,112,97,110,101,108,115,111,110,103,115,114,111,117,110,100,101\n,105,103,104,116,115,104,105,102,116,119,111,114,116,104,112,111,115,116,115,108\n,101,97,100,115,119,101,101,107,115,97,118,111,105,100,116,104,101,115,101,109,\n105,108,101,115,112,108,97,110,101,115,109,97,114,116,97,108,112,104,97,112,108,\n97,110,116,109,97,114,107,115,114,97,116,101,115,112,108,97,121,115,99,108,97,\n105,109,115,97,108,101,115,116,101,120,116,115,115,116,97,114,115,119,114,111,\n110,103,60,47,104,51,62,116,104,105,110,103,46,111,114,103,47,109,117,108,116,\n105,104,101,97,114,100,80,111,119,101,114,115,116,97,110,100,116,111,107,101,110\n,115,111,108,105,100,40,116,104,105,115,98,114,105,110,103,115,104,105,112,115,\n115,116,97,102,102,116,114,105,101,100,99,97,108,108,115,102,117,108,108,121,102\n,97,99,116,115,97,103,101,110,116,84,104,105,115,32,47,47,45,45,62,97,100,109,\n105,110,101,103,121,112,116,69,118,101,110,116,49,53,112,120,59,69,109,97,105,\n108,116,114,117,101,34,99,114,111,115,115,115,112,101,110,116,98,108,111,103,115\n,98,111,120,34,62,110,111,116,101,100,108,101,97,118,101,99,104,105,110,97,115,\n105,122,101,115,103,117,101,115,116,60,47,104,52,62,114,111,98,111,116,104,101,\n97,118,121,116,114,117,101,44,115,101,118,101,110,103,114,97,110,100,99,114,105,\n109,101,115,105,103,110,115,97,119,97,114,101,100,97,110,99,101,112,104,97,115,\n101,62,60,33,45,45,101,110,95,85,83,38,35,51,57,59,50,48,48,112,120,95,110,97,\n109,101,108,97,116,105,110,101,110,106,111,121,97,106,97,120,46,97,116,105,111,\n110,115,109,105,116,104,85,46,83,46,32,104,111,108,100,115,112,101,116,101,114,\n105,110,100,105,97,110,97,118,34,62,99,104,97,105,110,115,99,111,114,101,99,111,\n109,101,115,100,111,105,110,103,112,114,105,111,114,83,104,97,114,101,49,57,57,\n48,115,114,111,109,97,110,108,105,115,116,115,106,97,112,97,110,102,97,108,108,\n115,116,114,105,97,108,111,119,110,101,114,97,103,114,101,101,60,47,104,50,62,97\n,98,117,115,101,97,108,101,114,116,111,112,101,114,97,34,45,47,47,87,99,97,114,\n100,115,104,105,108,108,115,116,101,97,109,115,80,104,111,116,111,116,114,117,\n116,104,99,108,101,97,110,46,112,104,112,63,115,97,105,110,116,109,101,116,97,\n108,108,111,117,105,115,109,101,97,110,116,112,114,111,111,102,98,114,105,101,\n102,114,111,119,34,62,103,101,110,114,101,116,114,117,99,107,108,111,111,107,115\n,86,97,108,117,101,70,114,97,109,101,46,110,101,116,47,45,45,62,10,60,116,114,\n121,32,123,10,118,97,114,32,109,97,107,101,115,99,111,115,116,115,112,108,97,105\n,110,97,100,117,108,116,113,117,101,115,116,116,114,97,105,110,108,97,98,111,114\n,104,101,108,112,115,99,97,117,115,101,109,97,103,105,99,109,111,116,111,114,116\n,104,101,105,114,50,53,48,112,120,108,101,97,115,116,115,116,101,112,115,67,111,\n117,110,116,99,111,117,108,100,103,108,97,115,115,115,105,100,101,115,102,117,\n110,100,115,104,111,116,101,108,97,119,97,114,100,109,111,117,116,104,109,111,\n118,101,115,112,97,114,105,115,103,105,118,101,115,100,117,116,99,104,116,101,\n120,97,115,102,114,117,105,116,110,117,108,108,44,124,124,91,93,59,116,111,112,\n34,62,10,60,33,45,45,80,79,83,84,34,111,99,101,97,110,60,98,114,47,62,102,108,\n111,111,114,115,112,101,97,107,100,101,112,116,104,32,115,105,122,101,98,97,110,\n107,115,99,97,116,99,104,99,104,97,114,116,50,48,112,120,59,97,108,105,103,110,\n100,101,97,108,115,119,111,117,108,100,53,48,112,120,59,117,114,108,61,34,112,97\n,114,107,115,109,111,117,115,101,77,111,115,116,32,46,46,46,60,47,97,109,111,110\n,103,98,114,97,105,110,98,111,100,121,32,110,111,110,101,59,98,97,115,101,100,99\n,97,114,114,121,100,114,97,102,116,114,101,102,101,114,112,97,103,101,95,104,111\n,109,101,46,109,101,116,101,114,100,101,108,97,121,100,114,101,97,109,112,114,\n111,118,101,106,111,105,110,116,60,47,116,114,62,100,114,117,103,115,60,33,45,45\n,32,97,112,114,105,108,105,100,101,97,108,97,108,108,101,110,101,120,97,99,116,\n102,111,114,116,104,99,111,100,101,115,108,111,103,105,99,86,105,101,119,32,115,\n101,101,109,115,98,108,97,110,107,112,111,114,116,115,32,40,50,48,48,115,97,118,\n101,100,95,108,105,110,107,103,111,97,108,115,103,114,97,110,116,103,114,101,101\n,107,104,111,109,101,115,114,105,110,103,115,114,97,116,101,100,51,48,112,120,59\n,119,104,111,115,101,112,97,114,115,101,40,41,59,34,32,66,108,111,99,107,108,105\n,110,117,120,106,111,110,101,115,112,105,120,101,108,39,41,59,34,62,41,59,105,\n102,40,45,108,101,102,116,100,97,118,105,100,104,111,114,115,101,70,111,99,117,\n115,114,97,105,115,101,98,111,120,101,115,84,114,97,99,107,101,109,101,110,116,\n60,47,101,109,62,98,97,114,34,62,46,115,114,99,61,116,111,119,101,114,97,108,116\n,61,34,99,97,98,108,101,104,101,110,114,121,50,52,112,120,59,115,101,116,117,112\n,105,116,97,108,121,115,104,97,114,112,109,105,110,111,114,116,97,115,116,101,\n119,97,110,116,115,116,104,105,115,46,114,101,115,101,116,119,104,101,101,108,\n103,105,114,108,115,47,99,115,115,47,49,48,48,37,59,99,108,117,98,115,115,116,\n117,102,102,98,105,98,108,101,118,111,116,101,115,32,49,48,48,48,107,111,114,101\n,97,125,41,59,13,10,98,97,110,100,115,113,117,101,117,101,61,32,123,125,59,56,48\n,112,120,59,99,107,105,110,103,123,13,10,9,9,97,104,101,97,100,99,108,111,99,107\n,105,114,105,115,104,108,105,107,101,32,114,97,116,105,111,115,116,97,116,115,70\n,111,114,109,34,121,97,104,111,111,41,91,48,93,59,65,98,111,117,116,102,105,110,\n100,115,60,47,104,49,62,100,101,98,117,103,116,97,115,107,115,85,82,76,32,61,99,\n101,108,108,115,125,41,40,41,59,49,50,112,120,59,112,114,105,109,101,116,101,108\n,108,115,116,117,114,110,115,48,120,54,48,48,46,106,112,103,34,115,112,97,105,\n110,98,101,97,99,104,116,97,120,101,115,109,105,99,114,111,97,110,103,101,108,45\n,45,62,60,47,103,105,102,116,115,115,116,101,118,101,45,108,105,110,107,98,111,\n100,121,46,125,41,59,10,9,109,111,117,110,116,32,40,49,57,57,70,65,81,60,47,114,\n111,103,101,114,102,114,97,110,107,67,108,97,115,115,50,56,112,120,59,102,101,\n101,100,115,60,104,49,62,60,115,99,111,116,116,116,101,115,116,115,50,50,112,120\n,59,100,114,105,110,107,41,32,124,124,32,108,101,119,105,115,115,104,97,108,108,\n35,48,51,57,59,32,102,111,114,32,108,111,118,101,100,119,97,115,116,101,48,48,\n112,120,59,106,97,58,227,130,115,105,109,111,110,60,102,111,110,116,114,101,112,\n108,121,109,101,101,116,115,117,110,116,101,114,99,104,101,97,112,116,105,103,\n104,116,66,114,97,110,100,41,32,33,61,32,100,114,101,115,115,99,108,105,112,115,\n114,111,111,109,115,111,110,107,101,121,109,111,98,105,108,109,97,105,110,46,78,\n97,109,101,32,112,108,97,116,101,102,117,110,110,121,116,114,101,101,115,99,111,\n109,47,34,49,46,106,112,103,119,109,111,100,101,112,97,114,97,109,83,84,65,82,84\n,108,101,102,116,32,105,100,100,101,110,44,32,50,48,49,41,59,10,125,10,102,111,\n114,109,46,118,105,114,117,115,99,104,97,105,114,116,114,97,110,115,119,111,114,\n115,116,80,97,103,101,115,105,116,105,111,110,112,97,116,99,104,60,33,45,45,10,\n111,45,99,97,99,102,105,114,109,115,116,111,117,114,115,44,48,48,48,32,97,115,\n105,97,110,105,43,43,41,123,97,100,111,98,101,39,41,91,48,93,105,100,61,49,48,98\n,111,116,104,59,109,101,110,117,32,46,50,46,109,105,46,112,110,103,34,107,101,\n118,105,110,99,111,97,99,104,67,104,105,108,100,98,114,117,99,101,50,46,106,112,\n103,85,82,76,41,43,46,106,112,103,124,115,117,105,116,101,115,108,105,99,101,104\n,97,114,114,121,49,50,48,34,32,115,119,101,101,116,116,114,62,13,10,110,97,109,\n101,61,100,105,101,103,111,112,97,103,101,32,115,119,105,115,115,45,45,62,10,10,\n35,102,102,102,59,34,62,76,111,103,46,99,111,109,34,116,114,101,97,116,115,104,\n101,101,116,41,32,38,38,32,49,52,112,120,59,115,108,101,101,112,110,116,101,110,\n116,102,105,108,101,100,106,97,58,227,131,105,100,61,34,99,78,97,109,101,34,119,\n111,114,115,101,115,104,111,116,115,45,98,111,120,45,100,101,108,116,97,10,38,\n108,116,59,98,101,97,114,115,58,52,56,90,60,100,97,116,97,45,114,117,114,97,108,\n60,47,97,62,32,115,112,101,110,100,98,97,107,101,114,115,104,111,112,115,61,32,\n34,34,59,112,104,112,34,62,99,116,105,111,110,49,51,112,120,59,98,114,105,97,110\n,104,101,108,108,111,115,105,122,101,61,111,61,37,50,70,32,106,111,105,110,109,\n97,121,98,101,60,105,109,103,32,105,109,103,34,62,44,32,102,106,115,105,109,103,\n34,32,34,41,91,48,93,77,84,111,112,66,84,121,112,101,34,110,101,119,108,121,68,\n97,110,115,107,99,122,101,99,104,116,114,97,105,108,107,110,111,119,115,60,47,\n104,53,62,102,97,113,34,62,122,104,45,99,110,49,48,41,59,10,45,49,34,41,59,116,\n121,112,101,61,98,108,117,101,115,116,114,117,108,121,100,97,118,105,115,46,106,\n115,39,59,62,13,10,60,33,115,116,101,101,108,32,121,111,117,32,104,50,62,13,10,\n102,111,114,109,32,106,101,115,117,115,49,48,48,37,32,109,101,110,117,46,13,10,9\n,13,10,119,97,108,101,115,114,105,115,107,115,117,109,101,110,116,100,100,105,\n110,103,98,45,108,105,107,116,101,97,99,104,103,105,102,34,32,118,101,103,97,115\n,100,97,110,115,107,101,101,115,116,105,115,104,113,105,112,115,117,111,109,105,\n115,111,98,114,101,100,101,115,100,101,101,110,116,114,101,116,111,100,111,115,\n112,117,101,100,101,97,195,177,111,115,101,115,116,195,161,116,105,101,110,101,\n104,97,115,116,97,111,116,114,111,115,112,97,114,116,101,100,111,110,100,101,110\n,117,101,118,111,104,97,99,101,114,102,111,114,109,97,109,105,115,109,111,109,\n101,106,111,114,109,117,110,100,111,97,113,117,195,173,100,195,173,97,115,115,\n195,179,108,111,97,121,117,100,97,102,101,99,104,97,116,111,100,97,115,116,97,\n110,116,111,109,101,110,111,115,100,97,116,111,115,111,116,114,97,115,115,105,\n116,105,111,109,117,99,104,111,97,104,111,114,97,108,117,103,97,114,109,97,121,\n111,114,101,115,116,111,115,104,111,114,97,115,116,101,110,101,114,97,110,116,\n101,115,102,111,116,111,115,101,115,116,97,115,112,97,195,173,115,110,117,101,\n118,97,115,97,108,117,100,102,111,114,111,115,109,101,100,105,111,113,117,105,\n101,110,109,101,115,101,115,112,111,100,101,114,99,104,105,108,101,115,101,114,\n195,161,118,101,99,101,115,100,101,99,105,114,106,111,115,195,169,101,115,116,97\n,114,118,101,110,116,97,103,114,117,112,111,104,101,99,104,111,101,108,108,111,\n115,116,101,110,103,111,97,109,105,103,111,99,111,115,97,115,110,105,118,101,108\n,103,101,110,116,101,109,105,115,109,97,97,105,114,101,115,106,117,108,105,111,\n116,101,109,97,115,104,97,99,105,97,102,97,118,111,114,106,117,110,105,111,108,\n105,98,114,101,112,117,110,116,111,98,117,101,110,111,97,117,116,111,114,97,98,\n114,105,108,98,117,101,110,97,116,101,120,116,111,109,97,114,122,111,115,97,98,\n101,114,108,105,115,116,97,108,117,101,103,111,99,195,179,109,111,101,110,101,\n114,111,106,117,101,103,111,112,101,114,195,186,104,97,98,101,114,101,115,116,\n111,121,110,117,110,99,97,109,117,106,101,114,118,97,108,111,114,102,117,101,114\n,97,108,105,98,114,111,103,117,115,116,97,105,103,117,97,108,118,111,116,111,115\n,99,97,115,111,115,103,117,195,173,97,112,117,101,100,111,115,111,109,111,115,97\n,118,105,115,111,117,115,116,101,100,100,101,98,101,110,110,111,99,104,101,98,\n117,115,99,97,102,97,108,116,97,101,117,114,111,115,115,101,114,105,101,100,105,\n99,104,111,99,117,114,115,111,99,108,97,118,101,99,97,115,97,115,108,101,195,179\n,110,112,108,97,122,111,108,97,114,103,111,111,98,114,97,115,118,105,115,116,97,\n97,112,111,121,111,106,117,110,116,111,116,114,97,116,97,118,105,115,116,111,99,\n114,101,97,114,99,97,109,112,111,104,101,109,111,115,99,105,110,99,111,99,97,114\n,103,111,112,105,115,111,115,111,114,100,101,110,104,97,99,101,110,195,161,114,\n101,97,100,105,115,99,111,112,101,100,114,111,99,101,114,99,97,112,117,101,100,\n97,112,97,112,101,108,109,101,110,111,114,195,186,116,105,108,99,108,97,114,111,\n106,111,114,103,101,99,97,108,108,101,112,111,110,101,114,116,97,114,100,101,110\n,97,100,105,101,109,97,114,99,97,115,105,103,117,101,101,108,108,97,115,115,105,\n103,108,111,99,111,99,104,101,109,111,116,111,115,109,97,100,114,101,99,108,97,\n115,101,114,101,115,116,111,110,105,195,177,111,113,117,101,100,97,112,97,115,97\n,114,98,97,110,99,111,104,105,106,111,115,118,105,97,106,101,112,97,98,108,111,\n195,169,115,116,101,118,105,101,110,101,114,101,105,110,111,100,101,106,97,114,\n102,111,110,100,111,99,97,110,97,108,110,111,114,116,101,108,101,116,114,97,99,\n97,117,115,97,116,111,109,97,114,109,97,110,111,115,108,117,110,101,115,97,117,\n116,111,115,118,105,108,108,97,118,101,110,100,111,112,101,115,97,114,116,105,\n112,111,115,116,101,110,103,97,109,97,114,99,111,108,108,101,118,97,112,97,100,\n114,101,117,110,105,100,111,118,97,109,111,115,122,111,110,97,115,97,109,98,111,\n115,98,97,110,100,97,109,97,114,105,97,97,98,117,115,111,109,117,99,104,97,115,\n117,98,105,114,114,105,111,106,97,118,105,118,105,114,103,114,97,100,111,99,104,\n105,99,97,97,108,108,195,173,106,111,118,101,110,100,105,99,104,97,101,115,116,\n97,110,116,97,108,101,115,115,97,108,105,114,115,117,101,108,111,112,101,115,111\n,115,102,105,110,101,115,108,108,97,109,97,98,117,115,99,111,195,169,115,116,97,\n108,108,101,103,97,110,101,103,114,111,112,108,97,122,97,104,117,109,111,114,112\n,97,103,97,114,106,117,110,116,97,100,111,98,108,101,105,115,108,97,115,98,111,\n108,115,97,98,97,195,177,111,104,97,98,108,97,108,117,99,104,97,195,129,114,101,\n97,100,105,99,101,110,106,117,103,97,114,110,111,116,97,115,118,97,108,108,101,\n97,108,108,195,161,99,97,114,103,97,100,111,108,111,114,97,98,97,106,111,101,115\n,116,195,169,103,117,115,116,111,109,101,110,116,101,109,97,114,105,111,102,105,\n114,109,97,99,111,115,116,111,102,105,99,104,97,112,108,97,116,97,104,111,103,97\n,114,97,114,116,101,115,108,101,121,101,115,97,113,117,101,108,109,117,115,101,\n111,98,97,115,101,115,112,111,99,111,115,109,105,116,97,100,99,105,101,108,111,\n99,104,105,99,111,109,105,101,100,111,103,97,110,97,114,115,97,110,116,111,101,\n116,97,112,97,100,101,98,101,115,112,108,97,121,97,114,101,100,101,115,115,105,\n101,116,101,99,111,114,116,101,99,111,114,101,97,100,117,100,97,115,100,101,115,\n101,111,118,105,101,106,111,100,101,115,101,97,97,103,117,97,115,38,113,117,111,\n116,59,100,111,109,97,105,110,99,111,109,109,111,110,115,116,97,116,117,115,101,\n118,101,110,116,115,109,97,115,116,101,114,115,121,115,116,101,109,97,99,116,105\n,111,110,98,97,110,110,101,114,114,101,109,111,118,101,115,99,114,111,108,108,\n117,112,100,97,116,101,103,108,111,98,97,108,109,101,100,105,117,109,102,105,108\n,116,101,114,110,117,109,98,101,114,99,104,97,110,103,101,114,101,115,117,108,\n116,112,117,98,108,105,99,115,99,114,101,101,110,99,104,111,111,115,101,110,111,\n114,109,97,108,116,114,97,118,101,108,105,115,115,117,101,115,115,111,117,114,99\n,101,116,97,114,103,101,116,115,112,114,105,110,103,109,111,100,117,108,101,109,\n111,98,105,108,101,115,119,105,116,99,104,112,104,111,116,111,115,98,111,114,100\n,101,114,114,101,103,105,111,110,105,116,115,101,108,102,115,111,99,105,97,108,\n97,99,116,105,118,101,99,111,108,117,109,110,114,101,99,111,114,100,102,111,108,\n108,111,119,116,105,116,108,101,62,101,105,116,104,101,114,108,101,110,103,116,\n104,102,97,109,105,108,121,102,114,105,101,110,100,108,97,121,111,117,116,97,117\n,116,104,111,114,99,114,101,97,116,101,114,101,118,105,101,119,115,117,109,109,\n101,114,115,101,114,118,101,114,112,108,97,121,101,100,112,108,97,121,101,114,\n101,120,112,97,110,100,112,111,108,105,99,121,102,111,114,109,97,116,100,111,117\n,98,108,101,112,111,105,110,116,115,115,101,114,105,101,115,112,101,114,115,111,\n110,108,105,118,105,110,103,100,101,115,105,103,110,109,111,110,116,104,115,102,\n111,114,99,101,115,117,110,105,113,117,101,119,101,105,103,104,116,112,101,111,\n112,108,101,101,110,101,114,103,121,110,97,116,117,114,101,115,101,97,114,99,104\n,102,105,103,117,114,101,104,97,118,105,110,103,99,117,115,116,111,109,111,102,\n102,115,101,116,108,101,116,116,101,114,119,105,110,100,111,119,115,117,98,109,\n105,116,114,101,110,100,101,114,103,114,111,117,112,115,117,112,108,111,97,100,\n104,101,97,108,116,104,109,101,116,104,111,100,118,105,100,101,111,115,115,99,\n104,111,111,108,102,117,116,117,114,101,115,104,97,100,111,119,100,101,98,97,116\n,101,118,97,108,117,101,115,79,98,106,101,99,116,111,116,104,101,114,115,114,105\n,103,104,116,115,108,101,97,103,117,101,99,104,114,111,109,101,115,105,109,112,\n108,101,110,111,116,105,99,101,115,104,97,114,101,100,101,110,100,105,110,103,\n115,101,97,115,111,110,114,101,112,111,114,116,111,110,108,105,110,101,115,113,\n117,97,114,101,98,117,116,116,111,110,105,109,97,103,101,115,101,110,97,98,108,\n101,109,111,118,105,110,103,108,97,116,101,115,116,119,105,110,116,101,114,70,\n114,97,110,99,101,112,101,114,105,111,100,115,116,114,111,110,103,114,101,112,\n101,97,116,76,111,110,100,111,110,100,101,116,97,105,108,102,111,114,109,101,100\n,100,101,109,97,110,100,115,101,99,117,114,101,112,97,115,115,101,100,116,111,\n103,103,108,101,112,108,97,99,101,115,100,101,118,105,99,101,115,116,97,116,105,\n99,99,105,116,105,101,115,115,116,114,101,97,109,121,101,108,108,111,119,97,116,\n116,97,99,107,115,116,114,101,101,116,102,108,105,103,104,116,104,105,100,100,\n101,110,105,110,102,111,34,62,111,112,101,110,101,100,117,115,101,102,117,108,\n118,97,108,108,101,121,99,97,117,115,101,115,108,101,97,100,101,114,115,101,99,\n114,101,116,115,101,99,111,110,100,100,97,109,97,103,101,115,112,111,114,116,115\n,101,120,99,101,112,116,114,97,116,105,110,103,115,105,103,110,101,100,116,104,\n105,110,103,115,101,102,102,101,99,116,102,105,101,108,100,115,115,116,97,116,\n101,115,111,102,102,105,99,101,118,105,115,117,97,108,101,100,105,116,111,114,\n118,111,108,117,109,101,82,101,112,111,114,116,109,117,115,101,117,109,109,111,\n118,105,101,115,112,97,114,101,110,116,97,99,99,101,115,115,109,111,115,116,108,\n121,109,111,116,104,101,114,34,32,105,100,61,34,109,97,114,107,101,116,103,114,\n111,117,110,100,99,104,97,110,99,101,115,117,114,118,101,121,98,101,102,111,114,\n101,115,121,109,98,111,108,109,111,109,101,110,116,115,112,101,101,99,104,109,\n111,116,105,111,110,105,110,115,105,100,101,109,97,116,116,101,114,67,101,110,\n116,101,114,111,98,106,101,99,116,101,120,105,115,116,115,109,105,100,100,108,\n101,69,117,114,111,112,101,103,114,111,119,116,104,108,101,103,97,99,121,109,97,\n110,110,101,114,101,110,111,117,103,104,99,97,114,101,101,114,97,110,115,119,101\n,114,111,114,105,103,105,110,112,111,114,116,97,108,99,108,105,101,110,116,115,\n101,108,101,99,116,114,97,110,100,111,109,99,108,111,115,101,100,116,111,112,105\n,99,115,99,111,109,105,110,103,102,97,116,104,101,114,111,112,116,105,111,110,\n115,105,109,112,108,121,114,97,105,115,101,100,101,115,99,97,112,101,99,104,111,\n115,101,110,99,104,117,114,99,104,100,101,102,105,110,101,114,101,97,115,111,110\n,99,111,114,110,101,114,111,117,116,112,117,116,109,101,109,111,114,121,105,102,\n114,97,109,101,112,111,108,105,99,101,109,111,100,101,108,115,78,117,109,98,101,\n114,100,117,114,105,110,103,111,102,102,101,114,115,115,116,121,108,101,115,107,\n105,108,108,101,100,108,105,115,116,101,100,99,97,108,108,101,100,115,105,108,\n118,101,114,109,97,114,103,105,110,100,101,108,101,116,101,98,101,116,116,101,\n114,98,114,111,119,115,101,108,105,109,105,116,115,71,108,111,98,97,108,115,105,\n110,103,108,101,119,105,100,103,101,116,99,101,110,116,101,114,98,117,100,103,\n101,116,110,111,119,114,97,112,99,114,101,100,105,116,99,108,97,105,109,115,101,\n110,103,105,110,101,115,97,102,101,116,121,99,104,111,105,99,101,115,112,105,114\n,105,116,45,115,116,121,108,101,115,112,114,101,97,100,109,97,107,105,110,103,\n110,101,101,100,101,100,114,117,115,115,105,97,112,108,101,97,115,101,101,120,\n116,101,110,116,83,99,114,105,112,116,98,114,111,107,101,110,97,108,108,111,119,\n115,99,104,97,114,103,101,100,105,118,105,100,101,102,97,99,116,111,114,109,101,\n109,98,101,114,45,98,97,115,101,100,116,104,101,111,114,121,99,111,110,102,105,\n103,97,114,111,117,110,100,119,111,114,107,101,100,104,101,108,112,101,100,67,\n104,117,114,99,104,105,109,112,97,99,116,115,104,111,117,108,100,97,108,119,97,\n121,115,108,111,103,111,34,32,98,111,116,116,111,109,108,105,115,116,34,62,41,\n123,118,97,114,32,112,114,101,102,105,120,111,114,97,110,103,101,72,101,97,100,\n101,114,46,112,117,115,104,40,99,111,117,112,108,101,103,97,114,100,101,110,98,\n114,105,100,103,101,108,97,117,110,99,104,82,101,118,105,101,119,116,97,107,105,\n110,103,118,105,115,105,111,110,108,105,116,116,108,101,100,97,116,105,110,103,\n66,117,116,116,111,110,98,101,97,117,116,121,116,104,101,109,101,115,102,111,114\n,103,111,116,83,101,97,114,99,104,97,110,99,104,111,114,97,108,109,111,115,116,\n108,111,97,100,101,100,67,104,97,110,103,101,114,101,116,117,114,110,115,116,114\n,105,110,103,114,101,108,111,97,100,77,111,98,105,108,101,105,110,99,111,109,101\n,115,117,112,112,108,121,83,111,117,114,99,101,111,114,100,101,114,115,118,105,\n101,119,101,100,38,110,98,115,112,59,99,111,117,114,115,101,65,98,111,117,116,32\n,105,115,108,97,110,100,60,104,116,109,108,32,99,111,111,107,105,101,110,97,109,\n101,61,34,97,109,97,122,111,110,109,111,100,101,114,110,97,100,118,105,99,101,\n105,110,60,47,97,62,58,32,84,104,101,32,100,105,97,108,111,103,104,111,117,115,\n101,115,66,69,71,73,78,32,77,101,120,105,99,111,115,116,97,114,116,115,99,101,\n110,116,114,101,104,101,105,103,104,116,97,100,100,105,110,103,73,115,108,97,110\n,100,97,115,115,101,116,115,69,109,112,105,114,101,83,99,104,111,111,108,101,102\n,102,111,114,116,100,105,114,101,99,116,110,101,97,114,108,121,109,97,110,117,97\n,108,83,101,108,101,99,116,46,10,10,79,110,101,106,111,105,110,101,100,109,101,\n110,117,34,62,80,104,105,108,105,112,97,119,97,114,100,115,104,97,110,100,108,\n101,105,109,112,111,114,116,79,102,102,105,99,101,114,101,103,97,114,100,115,107\n,105,108,108,115,110,97,116,105,111,110,83,112,111,114,116,115,100,101,103,114,\n101,101,119,101,101,107,108,121,32,40,101,46,103,46,98,101,104,105,110,100,100,\n111,99,116,111,114,108,111,103,103,101,100,117,110,105,116,101,100,60,47,98,62,\n60,47,98,101,103,105,110,115,112,108,97,110,116,115,97,115,115,105,115,116,97,\n114,116,105,115,116,105,115,115,117,101,100,51,48,48,112,120,124,99,97,110,97,\n100,97,97,103,101,110,99,121,115,99,104,101,109,101,114,101,109,97,105,110,66,\n114,97,122,105,108,115,97,109,112,108,101,108,111,103,111,34,62,98,101,121,111,\n110,100,45,115,99,97,108,101,97,99,99,101,112,116,115,101,114,118,101,100,109,97\n,114,105,110,101,70,111,111,116,101,114,99,97,109,101,114,97,60,47,104,49,62,10,\n95,102,111,114,109,34,108,101,97,118,101,115,115,116,114,101,115,115,34,32,47,62\n,13,10,46,103,105,102,34,32,111,110,108,111,97,100,108,111,97,100,101,114,79,120\n,102,111,114,100,115,105,115,116,101,114,115,117,114,118,105,118,108,105,115,116\n,101,110,102,101,109,97,108,101,68,101,115,105,103,110,115,105,122,101,61,34,97,\n112,112,101,97,108,116,101,120,116,34,62,108,101,118,101,108,115,116,104,97,110,\n107,115,104,105,103,104,101,114,102,111,114,99,101,100,97,110,105,109,97,108,97,\n110,121,111,110,101,65,102,114,105,99,97,97,103,114,101,101,100,114,101,99,101,\n110,116,80,101,111,112,108,101,60,98,114,32,47,62,119,111,110,100,101,114,112,\n114,105,99,101,115,116,117,114,110,101,100,124,124,32,123,125,59,109,97,105,110,\n34,62,105,110,108,105,110,101,115,117,110,100,97,121,119,114,97,112,34,62,102,97\n,105,108,101,100,99,101,110,115,117,115,109,105,110,117,116,101,98,101,97,99,111\n,110,113,117,111,116,101,115,49,53,48,112,120,124,101,115,116,97,116,101,114,101\n,109,111,116,101,101,109,97,105,108,34,108,105,110,107,101,100,114,105,103,104,\n116,59,115,105,103,110,97,108,102,111,114,109,97,108,49,46,104,116,109,108,115,\n105,103,110,117,112,112,114,105,110,99,101,102,108,111,97,116,58,46,112,110,103,\n34,32,102,111,114,117,109,46,65,99,99,101,115,115,112,97,112,101,114,115,115,111\n,117,110,100,115,101,120,116,101,110,100,72,101,105,103,104,116,115,108,105,100,\n101,114,85,84,70,45,56,34,38,97,109,112,59,32,66,101,102,111,114,101,46,32,87,\n105,116,104,115,116,117,100,105,111,111,119,110,101,114,115,109,97,110,97,103,\n101,112,114,111,102,105,116,106,81,117,101,114,121,97,110,110,117,97,108,112,97,\n114,97,109,115,98,111,117,103,104,116,102,97,109,111,117,115,103,111,111,103,108\n,101,108,111,110,103,101,114,105,43,43,41,32,123,105,115,114,97,101,108,115,97,\n121,105,110,103,100,101,99,105,100,101,104,111,109,101,34,62,104,101,97,100,101,\n114,101,110,115,117,114,101,98,114,97,110,99,104,112,105,101,99,101,115,98,108,\n111,99,107,59,115,116,97,116,101,100,116,111,112,34,62,60,114,97,99,105,110,103,\n114,101,115,105,122,101,45,45,38,103,116,59,112,97,99,105,116,121,115,101,120,\n117,97,108,98,117,114,101,97,117,46,106,112,103,34,32,49,48,44,48,48,48,111,98,\n116,97,105,110,116,105,116,108,101,115,97,109,111,117,110,116,44,32,73,110,99,46\n,99,111,109,101,100,121,109,101,110,117,34,32,108,121,114,105,99,115,116,111,100\n,97,121,46,105,110,100,101,101,100,99,111,117,110,116,121,95,108,111,103,111,46,\n70,97,109,105,108,121,108,111,111,107,101,100,77,97,114,107,101,116,108,115,101,\n32,105,102,80,108,97,121,101,114,116,117,114,107,101,121,41,59,118,97,114,32,102\n,111,114,101,115,116,103,105,118,105,110,103,101,114,114,111,114,115,68,111,109,\n97,105,110,125,101,108,115,101,123,105,110,115,101,114,116,66,108,111,103,60,47,\n102,111,111,116,101,114,108,111,103,105,110,46,102,97,115,116,101,114,97,103,101\n,110,116,115,60,98,111,100,121,32,49,48,112,120,32,48,112,114,97,103,109,97,102,\n114,105,100,97,121,106,117,110,105,111,114,100,111,108,108,97,114,112,108,97,99,\n101,100,99,111,118,101,114,115,112,108,117,103,105,110,53,44,48,48,48,32,112,97,\n103,101,34,62,98,111,115,116,111,110,46,116,101,115,116,40,97,118,97,116,97,114,\n116,101,115,116,101,100,95,99,111,117,110,116,102,111,114,117,109,115,115,99,104\n,101,109,97,105,110,100,101,120,44,102,105,108,108,101,100,115,104,97,114,101,\n115,114,101,97,100,101,114,97,108,101,114,116,40,97,112,112,101,97,114,83,117,98\n,109,105,116,108,105,110,101,34,62,98,111,100,121,34,62,10,42,32,84,104,101,84,\n104,111,117,103,104,115,101,101,105,110,103,106,101,114,115,101,121,78,101,119,\n115,60,47,118,101,114,105,102,121,101,120,112,101,114,116,105,110,106,117,114,\n121,119,105,100,116,104,61,67,111,111,107,105,101,83,84,65,82,84,32,97,99,114,\n111,115,115,95,105,109,97,103,101,116,104,114,101,97,100,110,97,116,105,118,101,\n112,111,99,107,101,116,98,111,120,34,62,10,83,121,115,116,101,109,32,68,97,118,\n105,100,99,97,110,99,101,114,116,97,98,108,101,115,112,114,111,118,101,100,65,\n112,114,105,108,32,114,101,97,108,108,121,100,114,105,118,101,114,105,116,101,\n109,34,62,109,111,114,101,34,62,98,111,97,114,100,115,99,111,108,111,114,115,99,\n97,109,112,117,115,102,105,114,115,116,32,124,124,32,91,93,59,109,101,100,105,97\n,46,103,117,105,116,97,114,102,105,110,105,115,104,119,105,100,116,104,58,115,\n104,111,119,101,100,79,116,104,101,114,32,46,112,104,112,34,32,97,115,115,117,\n109,101,108,97,121,101,114,115,119,105,108,115,111,110,115,116,111,114,101,115,\n114,101,108,105,101,102,115,119,101,100,101,110,67,117,115,116,111,109,101,97,\n115,105,108,121,32,121,111,117,114,32,83,116,114,105,110,103,10,10,87,104,105,\n108,116,97,121,108,111,114,99,108,101,97,114,58,114,101,115,111,114,116,102,114,\n101,110,99,104,116,104,111,117,103,104,34,41,32,43,32,34,60,98,111,100,121,62,98\n,117,121,105,110,103,98,114,97,110,100,115,77,101,109,98,101,114,110,97,109,101,\n34,62,111,112,112,105,110,103,115,101,99,116,111,114,53,112,120,59,34,62,118,115\n,112,97,99,101,112,111,115,116,101,114,109,97,106,111,114,32,99,111,102,102,101,\n101,109,97,114,116,105,110,109,97,116,117,114,101,104,97,112,112,101,110,60,47,\n110,97,118,62,107,97,110,115,97,115,108,105,110,107,34,62,73,109,97,103,101,115,\n61,102,97,108,115,101,119,104,105,108,101,32,104,115,112,97,99,101,48,38,97,109,\n112,59,32,10,10,73,110,32,32,112,111,119,101,114,80,111,108,115,107,105,45,99,\n111,108,111,114,106,111,114,100,97,110,66,111,116,116,111,109,83,116,97,114,116,\n32,45,99,111,117,110,116,50,46,104,116,109,108,110,101,119,115,34,62,48,49,46,\n106,112,103,79,110,108,105,110,101,45,114,105,103,104,116,109,105,108,108,101,\n114,115,101,110,105,111,114,73,83,66,78,32,48,48,44,48,48,48,32,103,117,105,100,\n101,115,118,97,108,117,101,41,101,99,116,105,111,110,114,101,112,97,105,114,46,\n120,109,108,34,32,32,114,105,103,104,116,115,46,104,116,109,108,45,98,108,111,99\n,107,114,101,103,69,120,112,58,104,111,118,101,114,119,105,116,104,105,110,118,\n105,114,103,105,110,112,104,111,110,101,115,60,47,116,114,62,13,117,115,105,110,\n103,32,10,9,118,97,114,32,62,39,41,59,10,9,60,47,116,100,62,10,60,47,116,114,62,\n10,98,97,104,97,115,97,98,114,97,115,105,108,103,97,108,101,103,111,109,97,103,\n121,97,114,112,111,108,115,107,105,115,114,112,115,107,105,216,177,216,175,217,\n136,228,184,173,230,150,135,231,174,128,228,189,147,231,185,129,233,171,148,228,\n191,161,230,129,175,228,184,173,229,155,189,230,136,145,228,187,172,228,184,128,\n228,184,170,229,133,172,229,143,184,231,174,161,231,144,134,232,174,186,229,157,\n155,229,143,175,228,187,165,230,156,141,229,138,161,230,151,182,233,151,180,228,\n184,170,228,186,186,228,186,167,229,147,129,232,135,170,229,183,177,228,188,129,\n228,184,154,230,159,165,231,156,139,229,183,165,228,189,156,232,129,148,231,179,\n187,230,178,161,230,156,137,231,189,145,231,171,153,230,137,128,230,156,137,232,\n175,132,232,174,186,228,184,173,229,191,131,230,150,135,231,171,160,231,148,168,\n230,136,183,233,166,150,233,161,181,228,189,156,232,128,133,230,138,128,230,156,\n175,233,151,174,233,162,152,231,155,184,229,133,179,228,184,139,232,189,189,230,\n144,156,231,180,162,228,189,191,231,148,168,232,189,175,228,187,182,229,156,168,\n231,186,191,228,184,187,233,162,152,232,181,132,230,150,153,232,167,134,233,162,\n145,229,155,158,229,164,141,230,179,168,229,134,140,231,189,145,231,187,156,230,\n148,182,232,151,143,229,134,133,229,174,185,230,142,168,232,141,144,229,184,130,\n229,156,186,230,182,136,230,129,175,231,169,186,233,151,180,229,143,145,229,184,\n131,228,187,128,228,185,136,229,165,189,229,143,139,231,148,159,230,180,187,229,\n155,190,231,137,135,229,143,145,229,177,149,229,166,130,230,158,156,230,137,139,\n230,156,186,230,150,176,233,151,187,230,156,128,230,150,176,230,150,185,229,188,\n143,229,140,151,228,186,172,230,143,144,228,190,155,229,133,179,228,186,142,230,\n155,180,229,164,154,232,191,153,228,184,170,231,179,187,231,187,159,231,159,165,\n233,129,147,230,184,184,230,136,143,229,185,191,229,145,138,229,133,182,228,187,\n150,229,143,145,232,161,168,229,174,137,229,133,168,231,172,172,228,184,128,228,\n188,154,229,145,152,232,191,155,232,161,140,231,130,185,229,135,187,231,137,136,\n230,157,131,231,148,181,229,173,144,228,184,150,231,149,140,232,174,190,232,174,\n161,229,133,141,232,180,185,230,149,153,232,130,178,229,138,160,229,133,165,230,\n180,187,229,138,168,228,187,150,228,187,172,229,149,134,229,147,129,229,141,154,\n229,174,162,231,142,176,229,156,168,228,184,138,230,181,183,229,166,130,228,189,\n149,229,183,178,231,187,143,231,149,153,232,168,128,232,175,166,231,187,134,231,\n164,190,229,140,186,231,153,187,229,189,149,230,156,172,231,171,153,233,156,128,\n232,166,129,228,187,183,230,160,188,230,148,175,230,140,129,229,155,189,233,153,\n133,233,147,190,230,142,165,229,155,189,229,174,182,229,187,186,232,174,190,230,\n156,139,229,143,139,233,152,133,232,175,187,230,179,149,229,190,139,228,189,141,\n231,189,174,231,187,143,230,181,142,233,128,137,230,139,169,232,191,153,230,160,\n183,229,189,147,229,137,141,229,136,134,231,177,187,230,142,146,232,161,140,229,\n155,160,228,184,186,228,186,164,230,152,147,230,156,128,229,144,142,233,159,179,\n228,185,144,228,184,141,232,131,189,233,128,154,232,191,135,232,161,140,228,184,\n154,231,167,145,230,138,128,229,143,175,232,131,189,232,174,190,229,164,135,229,\n144,136,228,189,156,229,164,167,229,174,182,231,164,190,228,188,154,231,160,148,\n231,169,182,228,184,147,228,184,154,229,133,168,233,131,168,233,161,185,231,155,\n174,232,191,153,233,135,140,232,191,152,230,152,175,229,188,128,229,167,139,230,\n131,133,229,134,181,231,148,181,232,132,145,230,150,135,228,187,182,229,147,129,\n231,137,140,229,184,174,229,138,169,230,150,135,229,140,150,232,181,132,230,186,\n144,229,164,167,229,173,166,229,173,166,228,185,160,229,156,176,229,157,128,230,\n181,143,232,167,136,230,138,149,232,181,132,229,183,165,231,168,139,232,166,129,\n230,177,130,230,128,142,228,185,136,230,151,182,229,128,153,229,138,159,232,131,\n189,228,184,187,232,166,129,231,155,174,229,137,141,232,181,132,232,174,175,229,\n159,142,229,184,130,230,150,185,230,179,149,231,148,181,229,189,177,230,139,155,\n232,129,152,229,163,176,230,152,142,228,187,187,228,189,149,229,129,165,229,186,\n183,230,149,176,230,141,174,231,190,142,229,155,189,230,177,189,232,189,166,228,\n187,139,231,187,141,228,189,134,230,152,175,228,186,164,230,181,129,231,148,159,\n228,186,167,230,137,128,228,187,165,231,148,181,232,175,157,230,152,190,231,164,\n186,228,184,128,228,186,155,229,141,149,228,189,141,228,186,186,229,145,152,229,\n136,134,230,158,144,229,156,176,229,155,190,230,151,133,230,184,184,229,183,165,\n229,133,183,229,173,166,231,148,159,231,179,187,229,136,151,231,189,145,229,143,\n139,229,184,150,229,173,144,229,175,134,231,160,129,233,162,145,233,129,147,230,\n142,167,229,136,182,229,156,176,229,140,186,229,159,186,230,156,172,229,133,168,\n229,155,189,231,189,145,228,184,138,233,135,141,232,166,129,231,172,172,228,186,\n140,229,150,156,230,172,162,232,191,155,229,133,165,229,143,139,230,131,133,232,\n191,153,228,186,155,232,128,131,232,175,149,229,143,145,231,142,176,229,159,185,\n232,174,173,228,187,165,228,184,138,230,148,191,229,186,156,230,136,144,228,184,\n186,231,142,175,229,162,131,233,166,153,230,184,175,229,144,140,230,151,182,229,\n168,177,228,185,144,229,143,145,233,128,129,228,184,128,229,174,154,229,188,128,\n229,143,145,228,189,156,229,147,129,230,160,135,229,135,134,230,172,162,232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90,231,\n131,173,231,130,185,228,187,165,229,137,141,229,174,140,229,133,168,229,143,145,\n229,184,150,232,174,190,231,189,174,233,162,134,229,175,188,229,183,165,228,184,\n154,229,140,187,233,153,162,231,156,139,231,156,139,231,187,143,229,133,184,229,\n142,159,229,155,160,229,185,179,229,143,176,229,144,132,231,167,141,229,162,158,\n229,138,160,230,157,144,230,150,153,230,150,176,229,162,158,228,185,139,229,144,\n142,232,129,140,228,184,154,230,149,136,230,158,156,228,187,138,229,185,180,232,\n174,186,230,150,135,230,136,145,229,155,189,229,145,138,232,175,137,231,137,136,\n228,184,187,228,191,174,230,148,185,229,143,130,228,184,142,230,137,147,229,141,\n176,229,191,171,228,185,144,230,156,186,230,162,176,232,167,130,231,130,185,229,\n173,152,229,156,168,231,178,190,231,165,158,232,142,183,229,190,151,229,136,169,\n231,148,168,231,187,167,231,187,173,228,189,160,228,187,172,232,191,153,228,185,\n136,230,168,161,229,188,143,232,175,173,232,168,128,232,131,189,229,164,159,233,\n155,133,232,153,142,230,147,141,228,189,156,233,163,142,230,160,188,228,184,128,\n232,181,183,231,167,145,229,173,166,228,189,147,232,130,178,231,159,173,228,191,\n161,230,157,161,228,187,182,230,178,187,231,150,151,232,191,144,229,138,168,228,\n186,167,228,184,154,228,188,154,232,174,174,229,175,188,232,136,170,229,133,136,\n231,148,159,232,129,148,231,155,159,229,143,175,230,152,175,229,149,143,233,161,\n140,231,187,147,230,158,132,228,189,156,231,148,168,232,176,131,230,159,165,232,\n179,135,230,150,153,232,135,170,229,138,168,232,180,159,232,180,163,229,134,156,\n228,184,154,232,174,191,233,151,174,229,174,158,230,150,189,230,142,165,229,143,\n151,232,174,168,232,174,186,233,130,163,228,184,170,229,143,141,233,166,136,229,\n138,160,229,188,186,229,165,179,230,128,167,232,140,131,229,155,180,230,156,141,\n229,139,153,228,188,145,233,151,178,228,187,138,230,151,165,229,174,162,230,156,\n141,232,167,128,231,156,139,229,143,130,229,138,160,231,154,132,232,175,157,228,\n184,128,231,130,185,228,191,157,232,175,129,229,155,190,228,185,166,230,156,137,\n230,149,136,230,181,139,232,175,149,231,167,187,229,138,168,230,137,141,232,131,\n189,229,134,179,229,174,154,232,130,161,231,165,168,228,184,141,230,150,173,233,\n156,128,230,177,130,228,184,141,229,190,151,229,138,158,230,179,149,228,185,139,\n233,151,180,233,135,135,231,148,168,232,144,165,233,148,128,230,138,149,232,175,\n137,231,155,174,230,160,135,231,136,177,230,131,133,230,145,132,229,189,177,230,\n156,137,228,186,155,232,164,135,232,163,189,230,150,135,229,173,166,230,156,186,\n228,188,154,230,149,176,229,173,151,232,163,133,228,191,174,232,180,173,231,137,\n169,229,134,156,230,157,145,229,133,168,233,157,162,231,178,190,229,147,129,229,\n133,182,229,174,158,228,186,139,230,131,133,230,176,180,229,185,179,230,143,144,\n231,164,186,228,184,138,229,184,130,232,176,162,232,176,162,230,153,174,233,128,\n154,230,149,153,229,184,136,228,184,138,228,188,160,231,177,187,229,136,171,230,\n173,140,230,155,178,230,139,165,230,156,137,229,136,155,230,150,176,233,133,141,\n228,187,182,229,143,170,232,166,129,230,151,182,228,187,163,232,179,135,232,168,\n138,232,190,190,229,136,176,228,186,186,231,148,159,232,174,162,233,152,133,232,\n128,129,229,184,136,229,177,149,231,164,186,229,191,131,231,144,134,232,180,180,\n229,173,144,231,182,178,231,171,153,228,184,187,233,161,140,232,135,170,231,132,\n182,231,186,167,229,136,171,231,174,128,229,141,149,230,148,185,233,157,169,233,\n130,163,228,186,155,230,157,165,232,175,180,230,137,147,229,188,128,228,187,163,\n231,160,129,229,136,160,233,153,164,232,175,129,229,136,184,232,138,130,231,155,\n174,233,135,141,231,130,185,230,172,161,230,149,184,229,164,154,229,176,145,232,\n167,132,229,136,146,232,181,132,233,135,145,230,137,190,229,136,176,228,187,165,\n229,144,142,229,164,167,229,133,168,228,184,187,233,161,181,230,156,128,228,189,\n179,229,155,158,231,173,148,229,164,169,228,184,139,228,191,157,233,154,156,231,\n142,176,228,187,163,230,163,128,230,159,165,230,138,149,231,165,168,229,176,143,\n230,151,182,230,178,146,230,156,137,230,173,163,229,184,184,231,148,154,232,135,\n179,228,187,163,231,144,134,231,155,174,229,189,149,229,133,172,229,188,128,229,\n164,141,229,136,182,233,135,145,232,158,141,229,185,184,231,166,143,231,137,136,\n230,156,172,229,189,162,230,136,144,229,135,134,229,164,135,232,161,140,230,131,\n133,229,155,158,229,136,176,230,128,157,230,131,179,230,128,142,230,160,183,229,\n141,143,232,174,174,232,174,164,232,175,129,230,156,128,229,165,189,228,186,167,\n231,148,159,230,140,137,231,133,167,230,156,141,232,163,133,229,185,191,228,184,\n156,229,138,168,230,188,171,233,135,135,232,180,173,230,150,176,230,137,139,231,\n187,132,229,155,190,233,157,162,230,157,191,229,143,130,232,128,131,230,148,191,\n230,178,187,229,174,185,230,152,147,229,164,169,229,156,176,229,138,170,229,138,\n155,228,186,186,228,187,172,229,141,135,231,186,167,233,128,159,229,186,166,228,\n186,186,231,137,169,232,176,131,230,149,180,230,181,129,232,161,140,233,128,160,\n230,136,144,230,150,135,229,173,151,233,159,169,229,155,189,232,180,184,230,152,\n147,229,188,128,229,177,149,231,155,184,233,151,156,232,161,168,231,142,176,229,\n189,177,232,167,134,229,166,130,230,173,164,231,190,142,229,174,185,229,164,167,\n229,176,143,230,138,165,233,129,147,230,157,161,230,172,190,229,191,131,230,131,\n133,232,174,184,229,164,154,230,179,149,232,167,132,229,174,182,229,177,133,228,\n185,166,229,186,151,232,191,158,230,142,165,231,171,139,229,141,179,228,184,190,\n230,138,165,230,138,128,229,183,167,229,165,165,232,191,144,231,153,187,229,133,\n165,228,187,165,230,157,165,231,144,134,232,174,186,228,186,139,228,187,182,232,\n135,170,231,148,177,228,184,173,229,141,142,229,138,158,229,133,172,229,166,136,\n229,166,136,231,156,159,230,173,163,228,184,141,233,148,153,229,133,168,230,150,\n135,229,144,136,229,144,140,228,187,183,229,128,188,229,136,171,228,186,186,231,\n155,145,231,157,163,229,133,183,228,189,147,228,184,150,231,186,170,229,155,162,\n233,152,159,229,136,155,228,184,154,230,137,191,230,139,133,229,162,158,233,149,\n191,230,156,137,228,186,186,228,191,157,230,140,129,229,149,134,229,174,182,231,\n187,180,228,191,174,229,143,176,230,185,190,229,183,166,229,143,179,232,130,161,\n228,187,189,231,173,148,230,161,136,229,174,158,233,153,133,231,148,181,228,191,\n161,231,187,143,231,144,134,231,148,159,229,145,189,229,174,163,228,188,160,228,\n187,187,229,138,161,230,173,163,229,188,143,231,137,185,232,137,178,228,184,139,\n230,157,165,229,141,143,228,188,154,229,143,170,232,131,189,229,189,147,231,132,\n182,233,135,141,230,150,176,229,133,167,229,174,185,230,140,135,229,175,188,232,\n191,144,232,161,140,230,151,165,229,191,151,232,179,163,229,174,182,232,182,133,\n232,191,135,229,156,159,229,156,176,230,181,153,230,177,159,230,148,175,228,187,\n152,230,142,168,229,135,186,231,171,153,233,149,191,230,157,173,229,183,158,230,\n137,167,232,161,140,229,136,182,233,128,160,228,185,139,228,184,128,230,142,168,\n229,185,191,231,142,176,229,156,186,230,143,143,232,191,176,229,143,152,229,140,\n150,228,188,160,231,187,159,230,173,140,230,137,139,228,191,157,233,153,169,232,\n175,190,231,168,139,229,140,187,231,150,151,231,187,143,232,191,135,232,191,135,\n229,142,187,228,185,139,229,137,141,230,148,182,229,133,165,229,185,180,229,186,\n166,230,157,130,229,191,151,231,190,142,228,184,189,230,156,128,233,171,152,231,\n153,187,233,153,134,230,156,170,230,157,165,229,138,160,229,183,165,229,133,141,\n232,180,163,230,149,153,231,168,139,231,137,136,229,157,151,232,186,171,228,189,\n147,233,135,141,229,186,134,229,135,186,229,148,174,230,136,144,230,156,172,229,\n189,162,229,188,143,229,156,159,232,177,134,229,135,186,229,131,185,228,184,156,\n230,150,185,233,130,174,231,174,177,229,141,151,228,186,172,230,177,130,232,129,\n140,229,143,150,229,190,151,232,129,140,228,189,141,231,155,184,228,191,161,233,\n161,181,233,157,162,229,136,134,233,146,159,231,189,145,233,161,181,231,161,174,\n229,174,154,229,155,190,228,190,139,231,189,145,229,157,128,231,167,175,230,158,\n129,233,148,153,232,175,175,231,155,174,231,154,132,229,174,157,232,180,157,230,\n156,186,229,133,179,233,163,142,233,153,169,230,142,136,230,157,131,231,151,133,\n230,175,146,229,174,160,231,137,169,233,153,164,228,186,134,232,169,149,232,171,\n150,231,150,190,231,151,133,229,143,138,230,151,182,230,177,130,232,180,173,231,\n171,153,231,130,185,229,132,191,231,171,165,230,175,143,229,164,169,228,184,173,\n229,164,174,232,174,164,232,175,134,230,175,143,228,184,170,229,164,169,230,180,\n165,229,173,151,228,189,147,229,143,176,231,129,163,231,187,180,230,138,164,230,\n156,172,233,161,181,228,184,170,230,128,167,229,174,152,230,150,185,229,184,184,\n232,167,129,231,155,184,230,156,186,230,136,152,231,149,165,229,186,148,229,189,\n147,229,190,139,229,184,136,230,150,185,228,190,191,230,160,161,229,155,173,232,\n130,161,229,184,130,230,136,191,229,177,139,230,160,143,231,155,174,229,145,152,\n229,183,165,229,175,188,232,135,180,231,170,129,231,132,182,233,129,147,229,133,\n183,230,156,172,231,189,145,231,187,147,229,144,136,230,161,163,230,161,136,229,\n138,179,229,138,168,229,143,166,229,164,150,231,190,142,229,133,131,229,188,149,\n232,181,183,230,148,185,229,143,152,231,172,172,229,155,155,228,188,154,232,174,\n161,232,170,170,230,152,142,233,154,144,231,167,129,229,174,157,229,174,157,232,\n167,132,232,140,131,230,182,136,232,180,185,229,133,177,229,144,140,229,191,152,\n232,174,176,228,189,147,231,179,187,229,184,166,230,157,165,229,144,141,229,173,\n151,231,153,188,232,161,168,229,188,128,230,148,190,229,138,160,231,155,159,229,\n143,151,229,136,176,228,186,140,230,137,139,229,164,167,233,135,143,230,136,144,\n228,186,186,230,149,176,233,135,143,229,133,177,228,186,171,229,140,186,229,159,\n159,229,165,179,229,173,169,229,142,159,229,136,153,230,137,128,229,156,168,231,\n187,147,230,157,159,233,128,154,228,191,161,232,182,133,231,186,167,233,133,141,\n231,189,174,229,189,147,230,151,182,228,188,152,231,167,128,230,128,167,230,132,\n159,230,136,191,228,186,167,233,129,138,230,136,178,229,135,186,229,143,163,230,\n143,144,228,186,164,229,176,177,228,184,154,228,191,157,229,129,165,231,168,139,\n229,186,166,229,143,130,230,149,176,228,186,139,228,184,154,230,149,180,228,184,\n170,229,177,177,228,184,156,230,131,133,230,132,159,231,137,185,230,174,138,229,\n136,134,233,161,158,230,144,156,229,176,139,229,177,158,228,186,142,233,151,168,\n230,136,183,232,180,162,229,138,161,229,163,176,233,159,179,229,143,138,229,133,\n182,232,180,162,231,187,143,229,157,154,230,140,129,229,185,178,233,131,168,230,\n136,144,231,171,139,229,136,169,231,155,138,232,128,131,232,153,145,230,136,144,\n233,131,189,229,140,133,232,163,133,231,148,168,230,136,182,230,175,148,232,181,\n155,230,150,135,230,152,142,230,139,155,229,149,134,229,174,140,230,149,180,231,\n156,159,230,152,175,231,156,188,231,157,155,228,188,153,228,188,180,229,168,129,\n230,156,155,233,162,134,229,159,159,229,141,171,231,148,159,228,188,152,230,131,\n160,232,171,150,229,163,135,229,133,172,229,133,177,232,137,175,229,165,189,229,\n133,133,229,136,134,231,172,166,229,144,136,233,153,132,228,187,182,231,137,185,\n231,130,185,228,184,141,229,143,175,232,139,177,230,150,135,232,181,132,228,186,\n167,230,160,185,230,156,172,230,152,142,230,152,190,229,175,134,231,162,188,229,\n133,172,228,188,151,230,176,145,230,151,143,230,155,180,229,138,160,228,186,171,\n229,143,151,229,144,140,229,173,166,229,144,175,229,138,168,233,128,130,229,144,\n136,229,142,159,230,157,165,233,151,174,231,173,148,230,156,172,230,150,135,231,\n190,142,233,163,159,231,187,191,232,137,178,231,168,179,229,174,154,231,187,136,\n228,186,142,231,148,159,231,137,169,228,190,155,230,177,130,230,144,156,231,139,\n144,229,138,155,233,135,143,228,184,165,233,135,141,230,176,184,232,191,156,229,\n134,153,231,156,159,230,156,137,233,153,144,231,171,158,228,186,137,229,175,185,\n232,177,161,232,180,185,231,148,168,228,184,141,229,165,189,231,187,157,229,175,\n185,229,141,129,229,136,134,228,191,131,232,191,155,231,130,185,232,175,132,229,\n189,177,233,159,179,228,188,152,229,138,191,228,184,141,229,176,145,230,172,163,\n232,181,143,229,185,182,228,184,148,230,156,137,231,130,185,230,150,185,229,144,\n145,229,133,168,230,150,176,228,191,161,231,148,168,232,174,190,230,150,189,229,\n189,162,232,177,161,232,181,132,230,160,188,231,170,129,231,160,180,233,154,143,\n231,157,128,233,135,141,229,164,167,228,186,142,230,152,175,230,175,149,228,184,\n154,230,153,186,232,131,189,229,140,150,229,183,165,229,174,140,231,190,142,229,\n149,134,229,159,142,231,187,159,228,184,128,229,135,186,231,137,136,230,137,147,\n233,128,160,231,148,162,229,147,129,230,166,130,229,134,181,231,148,168,228,186,\n142,228,191,157,231,149,153,229,155,160,231,180,160,228,184,173,229,156,139,229,\n173,152,229,130,168,232,180,180,229,155,190,230,156,128,230,132,155,233,149,191,\n230,156,159,229,143,163,228,187,183,231,144,134,232,180,162,229,159,186,229,156,\n176,229,174,137,230,142,146,230,173,166,230,177,137,233,135,140,233,157,162,229,\n136,155,229,187,186,229,164,169,231,169,186,233,166,150,229,133,136,229,174,140,\n229,150,132,233,169,177,229,138,168,228,184,139,233,157,162,228,184,141,229,134,\n141,232,175,154,228,191,161,230,132,143,228,185,137,233,152,179,229,133,137,232,\n139,177,229,155,189,230,188,130,228,186,174,229,134,155,228,186,139,231,142,169,\n229,174,182,231,190,164,228,188,151,229,134,156,230,176,145,229,141,179,229,143,\n175,229,144,141,231,168,177,229,174,182,229,133,183,229,138,168,231,148,187,230,\n131,179,229,136,176,230,179,168,230,152,142,229,176,143,229,173,166,230,128,167,\n232,131,189,232,128,131,231,160,148,231,161,172,228,187,182,232,167,130,231,156,\n139,230,184,133,230,165,154,230,144,158,231,172,145,233,166,150,233,160,129,233,\n187,132,233,135,145,233,128,130,231,148,168,230,177,159,232,139,143,231,156,159,\n229,174,158,228,184,187,231,174,161,233,152,182,230,174,181,232,168,187,229,134,\n138,231,191,187,232,175,145,230,157,131,229,136,169,229,129,154,229,165,189,228,\n188,188,228,185,142,233,128,154,232,174,175,230,150,189,229,183,165,231,139,128,\n230,133,139,228,185,159,232,174,184,231,142,175,228,191,157,229,159,185,229,133,\n187,230,166,130,229,191,181,229,164,167,229,158,139,230,156,186,231,165,168,231,\n144,134,232,167,163,229,140,191,229,144,141,99,117,97,110,100,111,101,110,118,\n105,97,114,109,97,100,114,105,100,98,117,115,99,97,114,105,110,105,99,105,111,\n116,105,101,109,112,111,112,111,114,113,117,101,99,117,101,110,116,97,101,115,\n116,97,100,111,112,117,101,100,101,110,106,117,101,103,111,115,99,111,110,116,\n114,97,101,115,116,195,161,110,110,111,109,98,114,101,116,105,101,110,101,110,\n112,101,114,102,105,108,109,97,110,101,114,97,97,109,105,103,111,115,99,105,117,\n100,97,100,99,101,110,116,114,111,97,117,110,113,117,101,112,117,101,100,101,115\n,100,101,110,116,114,111,112,114,105,109,101,114,112,114,101,99,105,111,115,101,\n103,195,186,110,98,117,101,110,111,115,118,111,108,118,101,114,112,117,110,116,\n111,115,115,101,109,97,110,97,104,97,98,195,173,97,97,103,111,115,116,111,110,\n117,101,118,111,115,117,110,105,100,111,115,99,97,114,108,111,115,101,113,117,\n105,112,111,110,105,195,177,111,115,109,117,99,104,111,115,97,108,103,117,110,97\n,99,111,114,114,101,111,105,109,97,103,101,110,112,97,114,116,105,114,97,114,114\n,105,98,97,109,97,114,195,173,97,104,111,109,98,114,101,101,109,112,108,101,111,\n118,101,114,100,97,100,99,97,109,98,105,111,109,117,99,104,97,115,102,117,101,\n114,111,110,112,97,115,97,100,111,108,195,173,110,101,97,112,97,114,101,99,101,\n110,117,101,118,97,115,99,117,114,115,111,115,101,115,116,97,98,97,113,117,105,\n101,114,111,108,105,98,114,111,115,99,117,97,110,116,111,97,99,99,101,115,111,\n109,105,103,117,101,108,118,97,114,105,111,115,99,117,97,116,114,111,116,105,101\n,110,101,115,103,114,117,112,111,115,115,101,114,195,161,110,101,117,114,111,112\n,97,109,101,100,105,111,115,102,114,101,110,116,101,97,99,101,114,99,97,100,101,\n109,195,161,115,111,102,101,114,116,97,99,111,99,104,101,115,109,111,100,101,108\n,111,105,116,97,108,105,97,108,101,116,114,97,115,97,108,103,195,186,110,99,111,\n109,112,114,97,99,117,97,108,101,115,101,120,105,115,116,101,99,117,101,114,112,\n111,115,105,101,110,100,111,112,114,101,110,115,97,108,108,101,103,97,114,118,\n105,97,106,101,115,100,105,110,101,114,111,109,117,114,99,105,97,112,111,100,114\n,195,161,112,117,101,115,116,111,100,105,97,114,105,111,112,117,101,98,108,111,\n113,117,105,101,114,101,109,97,110,117,101,108,112,114,111,112,105,111,99,114,\n105,115,105,115,99,105,101,114,116,111,115,101,103,117,114,111,109,117,101,114,\n116,101,102,117,101,110,116,101,99,101,114,114,97,114,103,114,97,110,100,101,101\n,102,101,99,116,111,112,97,114,116,101,115,109,101,100,105,100,97,112,114,111,\n112,105,97,111,102,114,101,99,101,116,105,101,114,114,97,101,45,109,97,105,108,\n118,97,114,105,97,115,102,111,114,109,97,115,102,117,116,117,114,111,111,98,106,\n101,116,111,115,101,103,117,105,114,114,105,101,115,103,111,110,111,114,109,97,\n115,109,105,115,109,111,115,195,186,110,105,99,111,99,97,109,105,110,111,115,105\n,116,105,111,115,114,97,122,195,179,110,100,101,98,105,100,111,112,114,117,101,\n98,97,116,111,108,101,100,111,116,101,110,195,173,97,106,101,115,195,186,115,101\n,115,112,101,114,111,99,111,99,105,110,97,111,114,105,103,101,110,116,105,101,\n110,100,97,99,105,101,110,116,111,99,195,161,100,105,122,104,97,98,108,97,114,\n115,101,114,195,173,97,108,97,116,105,110,97,102,117,101,114,122,97,101,115,116,\n105,108,111,103,117,101,114,114,97,101,110,116,114,97,114,195,169,120,105,116,\n111,108,195,179,112,101,122,97,103,101,110,100,97,118,195,173,100,101,111,101,\n118,105,116,97,114,112,97,103,105,110,97,109,101,116,114,111,115,106,97,118,105,\n101,114,112,97,100,114,101,115,102,195,161,99,105,108,99,97,98,101,122,97,195,\n161,114,101,97,115,115,97,108,105,100,97,101,110,118,195,173,111,106,97,112,195,\n179,110,97,98,117,115,111,115,98,105,101,110,101,115,116,101,120,116,111,115,108\n,108,101,118,97,114,112,117,101,100,97,110,102,117,101,114,116,101,99,111,109,\n195,186,110,99,108,97,115,101,115,104,117,109,97,110,111,116,101,110,105,100,111\n,98,105,108,98,97,111,117,110,105,100,97,100,101,115,116,195,161,115,101,100,105\n,116,97,114,99,114,101,97,100,111,208,180,208,187,209,143,209,135,209,130,208,\n190,208,186,208,176,208,186,208,184,208,187,208,184,209,141,209,130,208,190,208,\n178,209,129,208,181,208,181,208,179,208,190,208,191,209,128,208,184,209,130,208,\n176,208,186,208,181,209,137,208,181,209,131,208,182,208,181,208,154,208,176,208,\n186,208,177,208,181,208,183,208,177,209,139,208,187,208,190,208,189,208,184,208,\n146,209,129,208,181,208,191,208,190,208,180,208,173,209,130,208,190,209,130,208,\n190,208,188,209,135,208,181,208,188,208,189,208,181,209,130,208,187,208,181,209,\n130,209,128,208,176,208,183,208,190,208,189,208,176,208,179,208,180,208,181,208,\n188,208,189,208,181,208,148,208,187,209,143,208,159,209,128,208,184,208,189,208,\n176,209,129,208,189,208,184,209,133,209,130,208,181,208,188,208,186,209,130,208,\n190,208,179,208,190,208,180,208,178,208,190,209,130,209,130,208,176,208,188,208,\n161,208,168,208,144,208,188,208,176,209,143,208,167,209,130,208,190,208,178,208,\n176,209,129,208,178,208,176,208,188,208,181,208,188,209,131,208,162,208,176,208,\n186,208,180,208,178,208,176,208,189,208,176,208,188,209,141,209,130,208,184,209,\n141,209,130,209,131,208,146,208,176,208,188,209,130,208,181,209,133,208,191,209,\n128,208,190,209,130,209,131,209,130,208,189,208,176,208,180,208,180,208,189,209,\n143,208,146,208,190,209,130,209,130,209,128,208,184,208,189,208,181,208,185,208,\n146,208,176,209,129,208,189,208,184,208,188,209,129,208,176,208,188,209,130,208,\n190,209,130,209,128,209,131,208,177,208,158,208,189,208,184,208,188,208,184,209,\n128,208,189,208,181,208,181,208,158,208,158,208,158,208,187,208,184,209,134,209,\n141,209,130,208,176,208,158,208,189,208,176,208,189,208,181,208,188,208,180,208,\n190,208,188,208,188,208,190,208,185,208,180,208,178,208,181,208,190,208,189,208,\n190,209,129,209,131,208,180,224,164,149,224,165,135,224,164,185,224,165,136,224,\n164,149,224,165,128,224,164,184,224,165,135,224,164,149,224,164,190,224,164,149,\n224,165,139,224,164,148,224,164,176,224,164,170,224,164,176,224,164,168,224,165,\n135,224,164,143,224,164,149,224,164,149,224,164,191,224,164,173,224,165,128,224,\n164,135,224,164,184,224,164,149,224,164,176,224,164,164,224,165,139,224,164,185,\n224,165,139,224,164,134,224,164,170,224,164,185,224,165,128,224,164,175,224,164,\n185,224,164,175,224,164,190,224,164,164,224,164,149,224,164,165,224,164,190,106,\n97,103,114,97,110,224,164,134,224,164,156,224,164,156,224,165,139,224,164,133,\n224,164,172,224,164,166,224,165,139,224,164,151,224,164,136,224,164,156,224,164,\n190,224,164,151,224,164,143,224,164,185,224,164,174,224,164,135,224,164,168,224,\n164,181,224,164,185,224,164,175,224,165,135,224,164,165,224,165,135,224,164,165,\n224,165,128,224,164,152,224,164,176,224,164,156,224,164,172,224,164,166,224,165,\n128,224,164,149,224,164,136,224,164,156,224,165,128,224,164,181,224,165,135,224,\n164,168,224,164,136,224,164,168,224,164,143,224,164,185,224,164,176,224,164,137,\n224,164,184,224,164,174,224,165,135,224,164,149,224,164,174,224,164,181,224,165,\n139,224,164,178,224,165,135,224,164,184,224,164,172,224,164,174,224,164,136,224,\n164,166,224,165,135,224,164,147,224,164,176,224,164,134,224,164,174,224,164,172,\n224,164,184,224,164,173,224,164,176,224,164,172,224,164,168,224,164,154,224,164,\n178,224,164,174,224,164,168,224,164,134,224,164,151,224,164,184,224,165,128,224,\n164,178,224,165,128,216,185,217,132,217,137,216,165,217,132,217,137,217,135,216,\n176,216,167,216,162,216,174,216,177,216,185,216,175,216,175,216,167,217,132,217,\n137,217,135,216,176,217,135,216,181,217,136,216,177,216,186,217,138,216,177,217,\n131,216,167,217,134,217,136,217,132,216,167,216,168,217,138,217,134,216,185,216,\n177,216,182,216,176,217,132,217,131,217,135,217,134,216,167,217,138,217,136,217,\n133,217,130,216,167,217,132,216,185,217,132,217,138,216,167,217,134,216,167,217,\n132,217,131,217,134,216,173,216,170,217,137,217,130,216,168,217,132,217,136,216,\n173,216,169,216,167,216,174,216,177,217,129,217,130,216,183,216,185,216,168,216,\n175,216,177,217,131,217,134,216,165,216,176,216,167,217,131,217,133,216,167,216,\n167,216,173,216,175,216,165,217,132,216,167,217,129,217,138,217,135,216,168,216,\n185,216,182,217,131,217,138,217,129,216,168,216,173,216,171,217,136,217,133,217,\n134,217,136,217,135,217,136,216,163,217,134,216,167,216,172,216,175,216,167,217,\n132,217,135,216,167,216,179,217,132,217,133,216,185,217,134,216,175,217,132,217,\n138,216,179,216,185,216,168,216,177,216,181,217,132,217,137,217,133,217,134,216,\n176,216,168,217,135,216,167,216,163,217,134,217,135,217,133,216,171,217,132,217,\n131,217,134,216,170,216,167,217,132,216,167,216,173,217,138,216,171,217,133,216,\n181,216,177,216,180,216,177,216,173,216,173,217,136,217,132,217,136,217,129,217,\n138,216,167,216,176,216,167,217,132,217,131,217,132,217,133,216,177,216,169,216,\n167,217,134,216,170,216,167,217,132,217,129,216,163,216,168,217,136,216,174,216,\n167,216,181,216,163,217,134,216,170,216,167,217,134,217,135,216,167,217,132,217,\n138,216,185,216,182,217,136,217,136,217,130,216,175,216,167,216,168,217,134,216,\n174,217,138,216,177,216,168,217,134,216,170,217,132,217,131,217,133,216,180,216,\n167,216,161,217,136,217,135,217,138,216,167,216,168,217,136,217,130,216,181,216,\n181,217,136,217,133,216,167,216,177,217,130,217,133,216,163,216,173,216,175,217,\n134,216,173,217,134,216,185,216,175,217,133,216,177,216,163,217,138,216,167,216,\n173,216,169,217,131,216,170,216,168,216,175,217,136,217,134,217,138,216,172,216,\n168,217,133,217,134,217,135,216,170,216,173,216,170,216,172,217,135,216,169,216,\n179,217,134,216,169,217,138,216,170,217,133,217,131,216,177,216,169,216,186,216,\n178,216,169,217,134,217,129,216,179,216,168,217,138,216,170,217,132,217,132,217,\n135,217,132,217,134,216,167,216,170,217,132,217,131,217,130,217,132,216,168,217,\n132,217,133,216,167,216,185,217,134,217,135,216,163,217,136,217,132,216,180,217,\n138,216,161,217,134,217,136,216,177,216,163,217,133,216,167,217,129,217,138,217,\n131,216,168,217,131,217,132,216,176,216,167,216,170,216,177,216,170,216,168,216,\n168,216,163,217,134,217,135,217,133,216,179,216,167,217,134,217,131,216,168,217,\n138,216,185,217,129,217,130,216,175,216,173,216,179,217,134,217,132,217,135,217,\n133,216,180,216,185,216,177,216,163,217,135,217,132,216,180,217,135,216,177,217,\n130,216,183,216,177,216,183,217,132,216,168,112,114,111,102,105,108,101,115,101,\n114,118,105,99,101,100,101,102,97,117,108,116,104,105,109,115,101,108,102,100,\n101,116,97,105,108,115,99,111,110,116,101,110,116,115,117,112,112,111,114,116,\n115,116,97,114,116,101,100,109,101,115,115,97,103,101,115,117,99,99,101,115,115,\n102,97,115,104,105,111,110,60,116,105,116,108,101,62,99,111,117,110,116,114,121,\n97,99,99,111,117,110,116,99,114,101,97,116,101,100,115,116,111,114,105,101,115,\n114,101,115,117,108,116,115,114,117,110,110,105,110,103,112,114,111,99,101,115,\n115,119,114,105,116,105,110,103,111,98,106,101,99,116,115,118,105,115,105,98,108\n,101,119,101,108,99,111,109,101,97,114,116,105,99,108,101,117,110,107,110,111,\n119,110,110,101,116,119,111,114,107,99,111,109,112,97,110,121,100,121,110,97,109\n,105,99,98,114,111,119,115,101,114,112,114,105,118,97,99,121,112,114,111,98,108,\n101,109,83,101,114,118,105,99,101,114,101,115,112,101,99,116,100,105,115,112,108\n,97,121,114,101,113,117,101,115,116,114,101,115,101,114,118,101,119,101,98,115,\n105,116,101,104,105,115,116,111,114,121,102,114,105,101,110,100,115,111,112,116,\n105,111,110,115,119,111,114,107,105,110,103,118,101,114,115,105,111,110,109,105,\n108,108,105,111,110,99,104,97,110,110,101,108,119,105,110,100,111,119,46,97,100,\n100,114,101,115,115,118,105,115,105,116,101,100,119,101,97,116,104,101,114,99,\n111,114,114,101,99,116,112,114,111,100,117,99,116,101,100,105,114,101,99,116,102\n,111,114,119,97,114,100,121,111,117,32,99,97,110,114,101,109,111,118,101,100,115\n,117,98,106,101,99,116,99,111,110,116,114,111,108,97,114,99,104,105,118,101,99,\n117,114,114,101,110,116,114,101,97,100,105,110,103,108,105,98,114,97,114,121,108\n,105,109,105,116,101,100,109,97,110,97,103,101,114,102,117,114,116,104,101,114,\n115,117,109,109,97,114,121,109,97,99,104,105,110,101,109,105,110,117,116,101,115\n,112,114,105,118,97,116,101,99,111,110,116,101,120,116,112,114,111,103,114,97,\n109,115,111,99,105,101,116,121,110,117,109,98,101,114,115,119,114,105,116,116,\n101,110,101,110,97,98,108,101,100,116,114,105,103,103,101,114,115,111,117,114,99\n,101,115,108,111,97,100,105,110,103,101,108,101,109,101,110,116,112,97,114,116,\n110,101,114,102,105,110,97,108,108,121,112,101,114,102,101,99,116,109,101,97,110\n,105,110,103,115,121,115,116,101,109,115,107,101,101,112,105,110,103,99,117,108,\n116,117,114,101,38,113,117,111,116,59,44,106,111,117,114,110,97,108,112,114,111,\n106,101,99,116,115,117,114,102,97,99,101,115,38,113,117,111,116,59,101,120,112,\n105,114,101,115,114,101,118,105,101,119,115,98,97,108,97,110,99,101,69,110,103,\n108,105,115,104,67,111,110,116,101,110,116,116,104,114,111,117,103,104,80,108,\n101,97,115,101,32,111,112,105,110,105,111,110,99,111,110,116,97,99,116,97,118,\n101,114,97,103,101,112,114,105,109,97,114,121,118,105,108,108,97,103,101,83,112,\n97,110,105,115,104,103,97,108,108,101,114,121,100,101,99,108,105,110,101,109,101\n,101,116,105,110,103,109,105,115,115,105,111,110,112,111,112,117,108,97,114,113,\n117,97,108,105,116,121,109,101,97,115,117,114,101,103,101,110,101,114,97,108,115\n,112,101,99,105,101,115,115,101,115,115,105,111,110,115,101,99,116,105,111,110,\n119,114,105,116,101,114,115,99,111,117,110,116,101,114,105,110,105,116,105,97,\n108,114,101,112,111,114,116,115,102,105,103,117,114,101,115,109,101,109,98,101,\n114,115,104,111,108,100,105,110,103,100,105,115,112,117,116,101,101,97,114,108,\n105,101,114,101,120,112,114,101,115,115,100,105,103,105,116,97,108,112,105,99,\n116,117,114,101,65,110,111,116,104,101,114,109,97,114,114,105,101,100,116,114,97\n,102,102,105,99,108,101,97,100,105,110,103,99,104,97,110,103,101,100,99,101,110,\n116,114,97,108,118,105,99,116,111,114,121,105,109,97,103,101,115,47,114,101,97,\n115,111,110,115,115,116,117,100,105,101,115,102,101,97,116,117,114,101,108,105,\n115,116,105,110,103,109,117,115,116,32,98,101,115,99,104,111,111,108,115,86,101,\n114,115,105,111,110,117,115,117,97,108,108,121,101,112,105,115,111,100,101,112,\n108,97,121,105,110,103,103,114,111,119,105,110,103,111,98,118,105,111,117,115,\n111,118,101,114,108,97,121,112,114,101,115,101,110,116,97,99,116,105,111,110,115\n,60,47,117,108,62,13,10,119,114,97,112,112,101,114,97,108,114,101,97,100,121,99,\n101,114,116,97,105,110,114,101,97,108,105,116,121,115,116,111,114,97,103,101,97,\n110,111,116,104,101,114,100,101,115,107,116,111,112,111,102,102,101,114,101,100,\n112,97,116,116,101,114,110,117,110,117,115,117,97,108,68,105,103,105,116,97,108,\n99,97,112,105,116,97,108,87,101,98,115,105,116,101,102,97,105,108,117,114,101,99\n,111,110,110,101,99,116,114,101,100,117,99,101,100,65,110,100,114,111,105,100,\n100,101,99,97,100,101,115,114,101,103,117,108,97,114,32,38,97,109,112,59,32,97,\n110,105,109,97,108,115,114,101,108,101,97,115,101,65,117,116,111,109,97,116,103,\n101,116,116,105,110,103,109,101,116,104,111,100,115,110,111,116,104,105,110,103,\n80,111,112,117,108,97,114,99,97,112,116,105,111,110,108,101,116,116,101,114,115,\n99,97,112,116,117,114,101,115,99,105,101,110,99,101,108,105,99,101,110,115,101,\n99,104,97,110,103,101,115,69,110,103,108,97,110,100,61,49,38,97,109,112,59,72,\n105,115,116,111,114,121,32,61,32,110,101,119,32,67,101,110,116,114,97,108,117,\n112,100,97,116,101,100,83,112,101,99,105,97,108,78,101,116,119,111,114,107,114,\n101,113,117,105,114,101,99,111,109,109,101,110,116,119,97,114,110,105,110,103,67\n,111,108,108,101,103,101,116,111,111,108,98,97,114,114,101,109,97,105,110,115,98\n,101,99,97,117,115,101,101,108,101,99,116,101,100,68,101,117,116,115,99,104,102,\n105,110,97,110,99,101,119,111,114,107,101,114,115,113,117,105,99,107,108,121,98,\n101,116,119,101,101,110,101,120,97,99,116,108,121,115,101,116,116,105,110,103,\n100,105,115,101,97,115,101,83,111,99,105,101,116,121,119,101,97,112,111,110,115,\n101,120,104,105,98,105,116,38,108,116,59,33,45,45,67,111,110,116,114,111,108,99,\n108,97,115,115,101,115,99,111,118,101,114,101,100,111,117,116,108,105,110,101,97\n,116,116,97,99,107,115,100,101,118,105,99,101,115,40,119,105,110,100,111,119,112\n,117,114,112,111,115,101,116,105,116,108,101,61,34,77,111,98,105,108,101,32,107,\n105,108,108,105,110,103,115,104,111,119,105,110,103,73,116,97,108,105,97,110,100\n,114,111,112,112,101,100,104,101,97,118,105,108,121,101,102,102,101,99,116,115,\n45,49,39,93,41,59,10,99,111,110,102,105,114,109,67,117,114,114,101,110,116,97,\n100,118,97,110,99,101,115,104,97,114,105,110,103,111,112,101,110,105,110,103,100\n,114,97,119,105,110,103,98,105,108,108,105,111,110,111,114,100,101,114,101,100,\n71,101,114,109,97,110,121,114,101,108,97,116,101,100,60,47,102,111,114,109,62,\n105,110,99,108,117,100,101,119,104,101,116,104,101,114,100,101,102,105,110,101,\n100,83,99,105,101,110,99,101,99,97,116,97,108,111,103,65,114,116,105,99,108,101,\n98,117,116,116,111,110,115,108,97,114,103,101,115,116,117,110,105,102,111,114,\n109,106,111,117,114,110,101,121,115,105,100,101,98,97,114,67,104,105,99,97,103,\n111,104,111,108,105,100,97,121,71,101,110,101,114,97,108,112,97,115,115,97,103,\n101,44,38,113,117,111,116,59,97,110,105,109,97,116,101,102,101,101,108,105,110,\n103,97,114,114,105,118,101,100,112,97,115,115,105,110,103,110,97,116,117,114,97,\n108,114,111,117,103,104,108,121,46,10,10,84,104,101,32,98,117,116,32,110,111,116\n,100,101,110,115,105,116,121,66,114,105,116,97,105,110,67,104,105,110,101,115,\n101,108,97,99,107,32,111,102,116,114,105,98,117,116,101,73,114,101,108,97,110,\n100,34,32,100,97,116,97,45,102,97,99,116,111,114,115,114,101,99,101,105,118,101,\n116,104,97,116,32,105,115,76,105,98,114,97,114,121,104,117,115,98,97,110,100,105\n,110,32,102,97,99,116,97,102,102,97,105,114,115,67,104,97,114,108,101,115,114,97\n,100,105,99,97,108,98,114,111,117,103,104,116,102,105,110,100,105,110,103,108,97\n,110,100,105,110,103,58,108,97,110,103,61,34,114,101,116,117,114,110,32,108,101,\n97,100,101,114,115,112,108,97,110,110,101,100,112,114,101,109,105,117,109,112,97\n,99,107,97,103,101,65,109,101,114,105,99,97,69,100,105,116,105,111,110,93,38,113\n,117,111,116,59,77,101,115,115,97,103,101,110,101,101,100,32,116,111,118,97,108,\n117,101,61,34,99,111,109,112,108,101,120,108,111,111,107,105,110,103,115,116,97,\n116,105,111,110,98,101,108,105,101,118,101,115,109,97,108,108,101,114,45,109,111\n,98,105,108,101,114,101,99,111,114,100,115,119,97,110,116,32,116,111,107,105,110\n,100,32,111,102,70,105,114,101,102,111,120,121,111,117,32,97,114,101,115,105,109\n,105,108,97,114,115,116,117,100,105,101,100,109,97,120,105,109,117,109,104,101,\n97,100,105,110,103,114,97,112,105,100,108,121,99,108,105,109,97,116,101,107,105,\n110,103,100,111,109,101,109,101,114,103,101,100,97,109,111,117,110,116,115,102,\n111,117,110,100,101,100,112,105,111,110,101,101,114,102,111,114,109,117,108,97,\n100,121,110,97,115,116,121,104,111,119,32,116,111,32,83,117,112,112,111,114,116,\n114,101,118,101,110,117,101,101,99,111,110,111,109,121,82,101,115,117,108,116,\n115,98,114,111,116,104,101,114,115,111,108,100,105,101,114,108,97,114,103,101,\n108,121,99,97,108,108,105,110,103,46,38,113,117,111,116,59,65,99,99,111,117,110,\n116,69,100,119,97,114,100,32,115,101,103,109,101,110,116,82,111,98,101,114,116,\n32,101,102,102,111,114,116,115,80,97,99,105,102,105,99,108,101,97,114,110,101,\n100,117,112,32,119,105,116,104,104,101,105,103,104,116,58,119,101,32,104,97,118,\n101,65,110,103,101,108,101,115,110,97,116,105,111,110,115,95,115,101,97,114,99,\n104,97,112,112,108,105,101,100,97,99,113,117,105,114,101,109,97,115,115,105,118,\n101,103,114,97,110,116,101,100,58,32,102,97,108,115,101,116,114,101,97,116,101,\n100,98,105,103,103,101,115,116,98,101,110,101,102,105,116,100,114,105,118,105,\n110,103,83,116,117,100,105,101,115,109,105,110,105,109,117,109,112,101,114,104,\n97,112,115,109,111,114,110,105,110,103,115,101,108,108,105,110,103,105,115,32,\n117,115,101,100,114,101,118,101,114,115,101,118,97,114,105,97,110,116,32,114,111\n,108,101,61,34,109,105,115,115,105,110,103,97,99,104,105,101,118,101,112,114,111\n,109,111,116,101,115,116,117,100,101,110,116,115,111,109,101,111,110,101,101,120\n,116,114,101,109,101,114,101,115,116,111,114,101,98,111,116,116,111,109,58,101,\n118,111,108,118,101,100,97,108,108,32,116,104,101,115,105,116,101,109,97,112,101\n,110,103,108,105,115,104,119,97,121,32,116,111,32,32,65,117,103,117,115,116,115,\n121,109,98,111,108,115,67,111,109,112,97,110,121,109,97,116,116,101,114,115,109,\n117,115,105,99,97,108,97,103,97,105,110,115,116,115,101,114,118,105,110,103,125,\n41,40,41,59,13,10,112,97,121,109,101,110,116,116,114,111,117,98,108,101,99,111,\n110,99,101,112,116,99,111,109,112,97,114,101,112,97,114,101,110,116,115,112,108,\n97,121,101,114,115,114,101,103,105,111,110,115,109,111,110,105,116,111,114,32,39\n,39,84,104,101,32,119,105,110,110,105,110,103,101,120,112,108,111,114,101,97,100\n,97,112,116,101,100,71,97,108,108,101,114,121,112,114,111,100,117,99,101,97,98,\n105,108,105,116,121,101,110,104,97,110,99,101,99,97,114,101,101,114,115,41,46,32\n,84,104,101,32,99,111,108,108,101,99,116,83,101,97,114,99,104,32,97,110,99,105,\n101,110,116,101,120,105,115,116,101,100,102,111,111,116,101,114,32,104,97,110,\n100,108,101,114,112,114,105,110,116,101,100,99,111,110,115,111,108,101,69,97,115\n,116,101,114,110,101,120,112,111,114,116,115,119,105,110,100,111,119,115,67,104,\n97,110,110,101,108,105,108,108,101,103,97,108,110,101,117,116,114,97,108,115,117\n,103,103,101,115,116,95,104,101,97,100,101,114,115,105,103,110,105,110,103,46,\n104,116,109,108,34,62,115,101,116,116,108,101,100,119,101,115,116,101,114,110,99\n,97,117,115,105,110,103,45,119,101,98,107,105,116,99,108,97,105,109,101,100,74,\n117,115,116,105,99,101,99,104,97,112,116,101,114,118,105,99,116,105,109,115,84,\n104,111,109,97,115,32,109,111,122,105,108,108,97,112,114,111,109,105,115,101,112\n,97,114,116,105,101,115,101,100,105,116,105,111,110,111,117,116,115,105,100,101,\n58,102,97,108,115,101,44,104,117,110,100,114,101,100,79,108,121,109,112,105,99,\n95,98,117,116,116,111,110,97,117,116,104,111,114,115,114,101,97,99,104,101,100,\n99,104,114,111,110,105,99,100,101,109,97,110,100,115,115,101,99,111,110,100,115,\n112,114,111,116,101,99,116,97,100,111,112,116,101,100,112,114,101,112,97,114,101\n,110,101,105,116,104,101,114,103,114,101,97,116,108,121,103,114,101,97,116,101,\n114,111,118,101,114,97,108,108,105,109,112,114,111,118,101,99,111,109,109,97,110\n,100,115,112,101,99,105,97,108,115,101,97,114,99,104,46,119,111,114,115,104,105,\n112,102,117,110,100,105,110,103,116,104,111,117,103,104,116,104,105,103,104,101,\n115,116,105,110,115,116,101,97,100,117,116,105,108,105,116,121,113,117,97,114,\n116,101,114,67,117,108,116,117,114,101,116,101,115,116,105,110,103,99,108,101,97\n,114,108,121,101,120,112,111,115,101,100,66,114,111,119,115,101,114,108,105,98,\n101,114,97,108,125,32,99,97,116,99,104,80,114,111,106,101,99,116,101,120,97,109,\n112,108,101,104,105,100,101,40,41,59,70,108,111,114,105,100,97,97,110,115,119,\n101,114,115,97,108,108,111,119,101,100,69,109,112,101,114,111,114,100,101,102,\n101,110,115,101,115,101,114,105,111,117,115,102,114,101,101,100,111,109,83,101,\n118,101,114,97,108,45,98,117,116,116,111,110,70,117,114,116,104,101,114,111,117,\n116,32,111,102,32,33,61,32,110,117,108,108,116,114,97,105,110,101,100,68,101,110\n,109,97,114,107,118,111,105,100,40,48,41,47,97,108,108,46,106,115,112,114,101,\n118,101,110,116,82,101,113,117,101,115,116,83,116,101,112,104,101,110,10,10,87,\n104,101,110,32,111,98,115,101,114,118,101,60,47,104,50,62,13,10,77,111,100,101,\n114,110,32,112,114,111,118,105,100,101,34,32,97,108,116,61,34,98,111,114,100,101\n,114,115,46,10,10,70,111,114,32,10,10,77,97,110,121,32,97,114,116,105,115,116,\n115,112,111,119,101,114,101,100,112,101,114,102,111,114,109,102,105,99,116,105,\n111,110,116,121,112,101,32,111,102,109,101,100,105,99,97,108,116,105,99,107,101,\n116,115,111,112,112,111,115,101,100,67,111,117,110,99,105,108,119,105,116,110,\n101,115,115,106,117,115,116,105,99,101,71,101,111,114,103,101,32,66,101,108,103,\n105,117,109,46,46,46,60,47,97,62,116,119,105,116,116,101,114,110,111,116,97,98,\n108,121,119,97,105,116,105,110,103,119,97,114,102,97,114,101,32,79,116,104,101,\n114,32,114,97,110,107,105,110,103,112,104,114,97,115,101,115,109,101,110,116,105\n,111,110,115,117,114,118,105,118,101,115,99,104,111,108,97,114,60,47,112,62,13,\n10,32,67,111,117,110,116,114,121,105,103,110,111,114,101,100,108,111,115,115,32,\n111,102,106,117,115,116,32,97,115,71,101,111,114,103,105,97,115,116,114,97,110,\n103,101,60,104,101,97,100,62,60,115,116,111,112,112,101,100,49,39,93,41,59,13,10\n,105,115,108,97,110,100,115,110,111,116,97,98,108,101,98,111,114,100,101,114,58,\n108,105,115,116,32,111,102,99,97,114,114,105,101,100,49,48,48,44,48,48,48,60,47,\n104,51,62,10,32,115,101,118,101,114,97,108,98,101,99,111,109,101,115,115,101,108\n,101,99,116,32,119,101,100,100,105,110,103,48,48,46,104,116,109,108,109,111,110,\n97,114,99,104,111,102,102,32,116,104,101,116,101,97,99,104,101,114,104,105,103,\n104,108,121,32,98,105,111,108,111,103,121,108,105,102,101,32,111,102,111,114,32,\n101,118,101,110,114,105,115,101,32,111,102,38,114,97,113,117,111,59,112,108,117,\n115,111,110,101,104,117,110,116,105,110,103,40,116,104,111,117,103,104,68,111,\n117,103,108,97,115,106,111,105,110,105,110,103,99,105,114,99,108,101,115,70,111,\n114,32,116,104,101,65,110,99,105,101,110,116,86,105,101,116,110,97,109,118,101,\n104,105,99,108,101,115,117,99,104,32,97,115,99,114,121,115,116,97,108,118,97,108\n,117,101,32,61,87,105,110,100,111,119,115,101,110,106,111,121,101,100,97,32,115,\n109,97,108,108,97,115,115,117,109,101,100,60,97,32,105,100,61,34,102,111,114,101\n,105,103,110,32,65,108,108,32,114,105,104,111,119,32,116,104,101,68,105,115,112,\n108,97,121,114,101,116,105,114,101,100,104,111,119,101,118,101,114,104,105,100,\n100,101,110,59,98,97,116,116,108,101,115,115,101,101,107,105,110,103,99,97,98,\n105,110,101,116,119,97,115,32,110,111,116,108,111,111,107,32,97,116,99,111,110,\n100,117,99,116,103,101,116,32,116,104,101,74,97,110,117,97,114,121,104,97,112,\n112,101,110,115,116,117,114,110,105,110,103,97,58,104,111,118,101,114,79,110,108\n,105,110,101,32,70,114,101,110,99,104,32,108,97,99,107,105,110,103,116,121,112,\n105,99,97,108,101,120,116,114,97,99,116,101,110,101,109,105,101,115,101,118,101,\n110,32,105,102,103,101,110,101,114,97,116,100,101,99,105,100,101,100,97,114,101,\n32,110,111,116,47,115,101,97,114,99,104,98,101,108,105,101,102,115,45,105,109,97\n,103,101,58,108,111,99,97,116,101,100,115,116,97,116,105,99,46,108,111,103,105,\n110,34,62,99,111,110,118,101,114,116,118,105,111,108,101,110,116,101,110,116,101\n,114,101,100,102,105,114,115,116,34,62,99,105,114,99,117,105,116,70,105,110,108,\n97,110,100,99,104,101,109,105,115,116,115,104,101,32,119,97,115,49,48,112,120,59\n,34,62,97,115,32,115,117,99,104,100,105,118,105,100,101,100,60,47,115,112,97,110\n,62,119,105,108,108,32,98,101,108,105,110,101,32,111,102,97,32,103,114,101,97,\n116,109,121,115,116,101,114,121,47,105,110,100,101,120,46,102,97,108,108,105,110\n,103,100,117,101,32,116,111,32,114,97,105,108,119,97,121,99,111,108,108,101,103,\n101,109,111,110,115,116,101,114,100,101,115,99,101,110,116,105,116,32,119,105,\n116,104,110,117,99,108,101,97,114,74,101,119,105,115,104,32,112,114,111,116,101,\n115,116,66,114,105,116,105,115,104,102,108,111,119,101,114,115,112,114,101,100,\n105,99,116,114,101,102,111,114,109,115,98,117,116,116,111,110,32,119,104,111,32,\n119,97,115,108,101,99,116,117,114,101,105,110,115,116,97,110,116,115,117,105,99,\n105,100,101,103,101,110,101,114,105,99,112,101,114,105,111,100,115,109,97,114,\n107,101,116,115,83,111,99,105,97,108,32,102,105,115,104,105,110,103,99,111,109,\n98,105,110,101,103,114,97,112,104,105,99,119,105,110,110,101,114,115,60,98,114,\n32,47,62,60,98,121,32,116,104,101,32,78,97,116,117,114,97,108,80,114,105,118,97,\n99,121,99,111,111,107,105,101,115,111,117,116,99,111,109,101,114,101,115,111,108\n,118,101,83,119,101,100,105,115,104,98,114,105,101,102,108,121,80,101,114,115,\n105,97,110,115,111,32,109,117,99,104,67,101,110,116,117,114,121,100,101,112,105,\n99,116,115,99,111,108,117,109,110,115,104,111,117,115,105,110,103,115,99,114,105\n,112,116,115,110,101,120,116,32,116,111,98,101,97,114,105,110,103,109,97,112,112\n,105,110,103,114,101,118,105,115,101,100,106,81,117,101,114,121,40,45,119,105,\n100,116,104,58,116,105,116,108,101,34,62,116,111,111,108,116,105,112,83,101,99,\n116,105,111,110,100,101,115,105,103,110,115,84,117,114,107,105,115,104,121,111,\n117,110,103,101,114,46,109,97,116,99,104,40,125,41,40,41,59,10,10,98,117,114,110\n,105,110,103,111,112,101,114,97,116,101,100,101,103,114,101,101,115,115,111,117,\n114,99,101,61,82,105,99,104,97,114,100,99,108,111,115,101,108,121,112,108,97,115\n,116,105,99,101,110,116,114,105,101,115,60,47,116,114,62,13,10,99,111,108,111,\n114,58,35,117,108,32,105,100,61,34,112,111,115,115,101,115,115,114,111,108,108,\n105,110,103,112,104,121,115,105,99,115,102,97,105,108,105,110,103,101,120,101,99\n,117,116,101,99,111,110,116,101,115,116,108,105,110,107,32,116,111,68,101,102,97\n,117,108,116,60,98,114,32,47,62,10,58,32,116,114,117,101,44,99,104,97,114,116,\n101,114,116,111,117,114,105,115,109,99,108,97,115,115,105,99,112,114,111,99,101,\n101,100,101,120,112,108,97,105,110,60,47,104,49,62,13,10,111,110,108,105,110,101\n,46,63,120,109,108,32,118,101,104,101,108,112,105,110,103,100,105,97,109,111,110\n,100,117,115,101,32,116,104,101,97,105,114,108,105,110,101,101,110,100,32,45,45,\n62,41,46,97,116,116,114,40,114,101,97,100,101,114,115,104,111,115,116,105,110,\n103,35,102,102,102,102,102,102,114,101,97,108,105,122,101,86,105,110,99,101,110,\n116,115,105,103,110,97,108,115,32,115,114,99,61,34,47,80,114,111,100,117,99,116,\n100,101,115,112,105,116,101,100,105,118,101,114,115,101,116,101,108,108,105,110,\n103,80,117,98,108,105,99,32,104,101,108,100,32,105,110,74,111,115,101,112,104,32\n,116,104,101,97,116,114,101,97,102,102,101,99,116,115,60,115,116,121,108,101,62,\n97,32,108,97,114,103,101,100,111,101,115,110,39,116,108,97,116,101,114,44,32,69,\n108,101,109,101,110,116,102,97,118,105,99,111,110,99,114,101,97,116,111,114,72,\n117,110,103,97,114,121,65,105,114,112,111,114,116,115,101,101,32,116,104,101,115\n,111,32,116,104,97,116,77,105,99,104,97,101,108,83,121,115,116,101,109,115,80,\n114,111,103,114,97,109,115,44,32,97,110,100,32,32,119,105,100,116,104,61,101,38,\n113,117,111,116,59,116,114,97,100,105,110,103,108,101,102,116,34,62,10,112,101,\n114,115,111,110,115,71,111,108,100,101,110,32,65,102,102,97,105,114,115,103,114,\n97,109,109,97,114,102,111,114,109,105,110,103,100,101,115,116,114,111,121,105,\n100,101,97,32,111,102,99,97,115,101,32,111,102,111,108,100,101,115,116,32,116,\n104,105,115,32,105,115,46,115,114,99,32,61,32,99,97,114,116,111,111,110,114,101,\n103,105,115,116,114,67,111,109,109,111,110,115,77,117,115,108,105,109,115,87,104\n,97,116,32,105,115,105,110,32,109,97,110,121,109,97,114,107,105,110,103,114,101,\n118,101,97,108,115,73,110,100,101,101,100,44,101,113,117,97,108,108,121,47,115,\n104,111,119,95,97,111,117,116,100,111,111,114,101,115,99,97,112,101,40,65,117,\n115,116,114,105,97,103,101,110,101,116,105,99,115,121,115,116,101,109,44,73,110,\n32,116,104,101,32,115,105,116,116,105,110,103,72,101,32,97,108,115,111,73,115,\n108,97,110,100,115,65,99,97,100,101,109,121,10,9,9,60,33,45,45,68,97,110,105,101\n,108,32,98,105,110,100,105,110,103,98,108,111,99,107,34,62,105,109,112,111,115,\n101,100,117,116,105,108,105,122,101,65,98,114,97,104,97,109,40,101,120,99,101,\n112,116,123,119,105,100,116,104,58,112,117,116,116,105,110,103,41,46,104,116,109\n,108,40,124,124,32,91,93,59,10,68,65,84,65,91,32,42,107,105,116,99,104,101,110,\n109,111,117,110,116,101,100,97,99,116,117,97,108,32,100,105,97,108,101,99,116,\n109,97,105,110,108,121,32,95,98,108,97,110,107,39,105,110,115,116,97,108,108,101\n,120,112,101,114,116,115,105,102,40,116,121,112,101,73,116,32,97,108,115,111,38,\n99,111,112,121,59,32,34,62,84,101,114,109,115,98,111,114,110,32,105,110,79,112,\n116,105,111,110,115,101,97,115,116,101,114,110,116,97,108,107,105,110,103,99,111\n,110,99,101,114,110,103,97,105,110,101,100,32,111,110,103,111,105,110,103,106,\n117,115,116,105,102,121,99,114,105,116,105,99,115,102,97,99,116,111,114,121,105,\n116,115,32,111,119,110,97,115,115,97,117,108,116,105,110,118,105,116,101,100,108\n,97,115,116,105,110,103,104,105,115,32,111,119,110,104,114,101,102,61,34,47,34,\n32,114,101,108,61,34,100,101,118,101,108,111,112,99,111,110,99,101,114,116,100,\n105,97,103,114,97,109,100,111,108,108,97,114,115,99,108,117,115,116,101,114,112,\n104,112,63,105,100,61,97,108,99,111,104,111,108,41,59,125,41,40,41,59,117,115,\n105,110,103,32,97,62,60,115,112,97,110,62,118,101,115,115,101,108,115,114,101,\n118,105,118,97,108,65,100,100,114,101,115,115,97,109,97,116,101,117,114,97,110,\n100,114,111,105,100,97,108,108,101,103,101,100,105,108,108,110,101,115,115,119,\n97,108,107,105,110,103,99,101,110,116,101,114,115,113,117,97,108,105,102,121,109\n,97,116,99,104,101,115,117,110,105,102,105,101,100,101,120,116,105,110,99,116,68\n,101,102,101,110,115,101,100,105,101,100,32,105,110,10,9,60,33,45,45,32,99,117,\n115,116,111,109,115,108,105,110,107,105,110,103,76,105,116,116,108,101,32,66,111\n,111,107,32,111,102,101,118,101,110,105,110,103,109,105,110,46,106,115,63,97,114\n,101,32,116,104,101,107,111,110,116,97,107,116,116,111,100,97,121,39,115,46,104,\n116,109,108,34,32,116,97,114,103,101,116,61,119,101,97,114,105,110,103,65,108,\n108,32,82,105,103,59,10,125,41,40,41,59,114,97,105,115,105,110,103,32,65,108,115\n,111,44,32,99,114,117,99,105,97,108,97,98,111,117,116,34,62,100,101,99,108,97,\n114,101,45,45,62,10,60,115,99,102,105,114,101,102,111,120,97,115,32,109,117,99,\n104,97,112,112,108,105,101,115,105,110,100,101,120,44,32,115,44,32,98,117,116,32\n,116,121,112,101,32,61,32,10,13,10,60,33,45,45,116,111,119,97,114,100,115,82,101\n,99,111,114,100,115,80,114,105,118,97,116,101,70,111,114,101,105,103,110,80,114,\n101,109,105,101,114,99,104,111,105,99,101,115,86,105,114,116,117,97,108,114,101,\n116,117,114,110,115,67,111,109,109,101,110,116,80,111,119,101,114,101,100,105,\n110,108,105,110,101,59,112,111,118,101,114,116,121,99,104,97,109,98,101,114,76,\n105,118,105,110,103,32,118,111,108,117,109,101,115,65,110,116,104,111,110,121,\n108,111,103,105,110,34,32,82,101,108,97,116,101,100,69,99,111,110,111,109,121,\n114,101,97,99,104,101,115,99,117,116,116,105,110,103,103,114,97,118,105,116,121,\n108,105,102,101,32,105,110,67,104,97,112,116,101,114,45,115,104,97,100,111,119,\n78,111,116,97,98,108,101,60,47,116,100,62,13,10,32,114,101,116,117,114,110,115,\n116,97,100,105,117,109,119,105,100,103,101,116,115,118,97,114,121,105,110,103,\n116,114,97,118,101,108,115,104,101,108,100,32,98,121,119,104,111,32,97,114,101,\n119,111,114,107,32,105,110,102,97,99,117,108,116,121,97,110,103,117,108,97,114,\n119,104,111,32,104,97,100,97,105,114,112,111,114,116,116,111,119,110,32,111,102,\n10,10,83,111,109,101,32,39,99,108,105,99,107,39,99,104,97,114,103,101,115,107,\n101,121,119,111,114,100,105,116,32,119,105,108,108,99,105,116,121,32,111,102,40,\n116,104,105,115,41,59,65,110,100,114,101,119,32,117,110,105,113,117,101,32,99,\n104,101,99,107,101,100,111,114,32,109,111,114,101,51,48,48,112,120,59,32,114,101\n,116,117,114,110,59,114,115,105,111,110,61,34,112,108,117,103,105,110,115,119,\n105,116,104,105,110,32,104,101,114,115,101,108,102,83,116,97,116,105,111,110,70,\n101,100,101,114,97,108,118,101,110,116,117,114,101,112,117,98,108,105,115,104,\n115,101,110,116,32,116,111,116,101,110,115,105,111,110,97,99,116,114,101,115,115\n,99,111,109,101,32,116,111,102,105,110,103,101,114,115,68,117,107,101,32,111,102\n,112,101,111,112,108,101,44,101,120,112,108,111,105,116,119,104,97,116,32,105,\n115,104,97,114,109,111,110,121,97,32,109,97,106,111,114,34,58,34,104,116,116,112\n,105,110,32,104,105,115,32,109,101,110,117,34,62,10,109,111,110,116,104,108,121,\n111,102,102,105,99,101,114,99,111,117,110,99,105,108,103,97,105,110,105,110,103,\n101,118,101,110,32,105,110,83,117,109,109,97,114,121,100,97,116,101,32,111,102,\n108,111,121,97,108,116,121,102,105,116,110,101,115,115,97,110,100,32,119,97,115,\n101,109,112,101,114,111,114,115,117,112,114,101,109,101,83,101,99,111,110,100,32\n,104,101,97,114,105,110,103,82,117,115,115,105,97,110,108,111,110,103,101,115,\n116,65,108,98,101,114,116,97,108,97,116,101,114,97,108,115,101,116,32,111,102,32\n,115,109,97,108,108,34,62,46,97,112,112,101,110,100,100,111,32,119,105,116,104,\n102,101,100,101,114,97,108,98,97,110,107,32,111,102,98,101,110,101,97,116,104,68\n,101,115,112,105,116,101,67,97,112,105,116,97,108,103,114,111,117,110,100,115,41\n,44,32,97,110,100,32,112,101,114,99,101,110,116,105,116,32,102,114,111,109,99,\n108,111,115,105,110,103,99,111,110,116,97,105,110,73,110,115,116,101,97,100,102,\n105,102,116,101,101,110,97,115,32,119,101,108,108,46,121,97,104,111,111,46,114,\n101,115,112,111,110,100,102,105,103,104,116,101,114,111,98,115,99,117,114,101,\n114,101,102,108,101,99,116,111,114,103,97,110,105,99,61,32,77,97,116,104,46,101,\n100,105,116,105,110,103,111,110,108,105,110,101,32,112,97,100,100,105,110,103,97\n,32,119,104,111,108,101,111,110,101,114,114,111,114,121,101,97,114,32,111,102,\n101,110,100,32,111,102,32,98,97,114,114,105,101,114,119,104,101,110,32,105,116,\n104,101,97,100,101,114,32,104,111,109,101,32,111,102,114,101,115,117,109,101,100\n,114,101,110,97,109,101,100,115,116,114,111,110,103,62,104,101,97,116,105,110,\n103,114,101,116,97,105,110,115,99,108,111,117,100,102,114,119,97,121,32,111,102,\n32,77,97,114,99,104,32,49,107,110,111,119,105,110,103,105,110,32,112,97,114,116,\n66,101,116,119,101,101,110,108,101,115,115,111,110,115,99,108,111,115,101,115,\n116,118,105,114,116,117,97,108,108,105,110,107,115,34,62,99,114,111,115,115,101,\n100,69,78,68,32,45,45,62,102,97,109,111,117,115,32,97,119,97,114,100,101,100,76,\n105,99,101,110,115,101,72,101,97,108,116,104,32,102,97,105,114,108,121,32,119,\n101,97,108,116,104,121,109,105,110,105,109,97,108,65,102,114,105,99,97,110,99,\n111,109,112,101,116,101,108,97,98,101,108,34,62,115,105,110,103,105,110,103,102,\n97,114,109,101,114,115,66,114,97,115,105,108,41,100,105,115,99,117,115,115,114,\n101,112,108,97,99,101,71,114,101,103,111,114,121,102,111,110,116,32,99,111,112,\n117,114,115,117,101,100,97,112,112,101,97,114,115,109,97,107,101,32,117,112,114,\n111,117,110,100,101,100,98,111,116,104,32,111,102,98,108,111,99,107,101,100,115,\n97,119,32,116,104,101,111,102,102,105,99,101,115,99,111,108,111,117,114,115,105,\n102,40,100,111,99,117,119,104,101,110,32,104,101,101,110,102,111,114,99,101,112,\n117,115,104,40,102,117,65,117,103,117,115,116,32,85,84,70,45,56,34,62,70,97,110,\n116,97,115,121,105,110,32,109,111,115,116,105,110,106,117,114,101,100,85,115,117\n,97,108,108,121,102,97,114,109,105,110,103,99,108,111,115,117,114,101,111,98,106\n,101,99,116,32,100,101,102,101,110,99,101,117,115,101,32,111,102,32,77,101,100,\n105,99,97,108,60,98,111,100,121,62,10,101,118,105,100,101,110,116,98,101,32,117,\n115,101,100,107,101,121,67,111,100,101,115,105,120,116,101,101,110,73,115,108,97\n,109,105,99,35,48,48,48,48,48,48,101,110,116,105,114,101,32,119,105,100,101,108,\n121,32,97,99,116,105,118,101,32,40,116,121,112,101,111,102,111,110,101,32,99,97,\n110,99,111,108,111,114,32,61,115,112,101,97,107,101,114,101,120,116,101,110,100,\n115,80,104,121,115,105,99,115,116,101,114,114,97,105,110,60,116,98,111,100,121,\n62,102,117,110,101,114,97,108,118,105,101,119,105,110,103,109,105,100,100,108,\n101,32,99,114,105,99,107,101,116,112,114,111,112,104,101,116,115,104,105,102,116\n,101,100,100,111,99,116,111,114,115,82,117,115,115,101,108,108,32,116,97,114,103\n,101,116,99,111,109,112,97,99,116,97,108,103,101,98,114,97,115,111,99,105,97,108\n,45,98,117,108,107,32,111,102,109,97,110,32,97,110,100,60,47,116,100,62,10,32,\n104,101,32,108,101,102,116,41,46,118,97,108,40,41,102,97,108,115,101,41,59,108,\n111,103,105,99,97,108,98,97,110,107,105,110,103,104,111,109,101,32,116,111,110,\n97,109,105,110,103,32,65,114,105,122,111,110,97,99,114,101,100,105,116,115,41,59\n,10,125,41,59,10,102,111,117,110,100,101,114,105,110,32,116,117,114,110,67,111,\n108,108,105,110,115,98,101,102,111,114,101,32,66,117,116,32,116,104,101,99,104,\n97,114,103,101,100,84,105,116,108,101,34,62,67,97,112,116,97,105,110,115,112,101\n,108,108,101,100,103,111,100,100,101,115,115,84,97,103,32,45,45,62,65,100,100,\n105,110,103,58,98,117,116,32,119,97,115,82,101,99,101,110,116,32,112,97,116,105,\n101,110,116,98,97,99,107,32,105,110,61,102,97,108,115,101,38,76,105,110,99,111,\n108,110,119,101,32,107,110,111,119,67,111,117,110,116,101,114,74,117,100,97,105,\n115,109,115,99,114,105,112,116,32,97,108,116,101,114,101,100,39,93,41,59,10,32,\n32,104,97,115,32,116,104,101,117,110,99,108,101,97,114,69,118,101,110,116,39,44,\n98,111,116,104,32,105,110,110,111,116,32,97,108,108,10,10,60,33,45,45,32,112,108\n,97,99,105,110,103,104,97,114,100,32,116,111,32,99,101,110,116,101,114,115,111,\n114,116,32,111,102,99,108,105,101,110,116,115,115,116,114,101,101,116,115,66,101\n,114,110,97,114,100,97,115,115,101,114,116,115,116,101,110,100,32,116,111,102,97\n,110,116,97,115,121,100,111,119,110,32,105,110,104,97,114,98,111,117,114,70,114,\n101,101,100,111,109,106,101,119,101,108,114,121,47,97,98,111,117,116,46,46,115,\n101,97,114,99,104,108,101,103,101,110,100,115,105,115,32,109,97,100,101,109,111,\n100,101,114,110,32,111,110,108,121,32,111,110,111,110,108,121,32,116,111,105,109\n,97,103,101,34,32,108,105,110,101,97,114,32,112,97,105,110,116,101,114,97,110,\n100,32,110,111,116,114,97,114,101,108,121,32,97,99,114,111,110,121,109,100,101,\n108,105,118,101,114,115,104,111,114,116,101,114,48,48,38,97,109,112,59,97,115,32\n,109,97,110,121,119,105,100,116,104,61,34,47,42,32,60,33,91,67,116,105,116,108,\n101,32,61,111,102,32,116,104,101,32,108,111,119,101,115,116,32,112,105,99,107,\n101,100,32,101,115,99,97,112,101,100,117,115,101,115,32,111,102,112,101,111,112,\n108,101,115,32,80,117,98,108,105,99,77,97,116,116,104,101,119,116,97,99,116,105,\n99,115,100,97,109,97,103,101,100,119,97,121,32,102,111,114,108,97,119,115,32,111\n,102,101,97,115,121,32,116,111,32,119,105,110,100,111,119,115,116,114,111,110,\n103,32,32,115,105,109,112,108,101,125,99,97,116,99,104,40,115,101,118,101,110,\n116,104,105,110,102,111,98,111,120,119,101,110,116,32,116,111,112,97,105,110,116\n,101,100,99,105,116,105,122,101,110,73,32,100,111,110,39,116,114,101,116,114,101\n,97,116,46,32,83,111,109,101,32,119,119,46,34,41,59,10,98,111,109,98,105,110,103\n,109,97,105,108,116,111,58,109,97,100,101,32,105,110,46,32,77,97,110,121,32,99,\n97,114,114,105,101,115,124,124,123,125,59,119,105,119,111,114,107,32,111,102,115\n,121,110,111,110,121,109,100,101,102,101,97,116,115,102,97,118,111,114,101,100,\n111,112,116,105,99,97,108,112,97,103,101,84,114,97,117,110,108,101,115,115,32,\n115,101,110,100,105,110,103,108,101,102,116,34,62,60,99,111,109,83,99,111,114,65\n,108,108,32,116,104,101,106,81,117,101,114,121,46,116,111,117,114,105,115,116,67\n,108,97,115,115,105,99,102,97,108,115,101,34,32,87,105,108,104,101,108,109,115,\n117,98,117,114,98,115,103,101,110,117,105,110,101,98,105,115,104,111,112,115,46,\n115,112,108,105,116,40,103,108,111,98,97,108,32,102,111,108,108,111,119,115,98,\n111,100,121,32,111,102,110,111,109,105,110,97,108,67,111,110,116,97,99,116,115,\n101,99,117,108,97,114,108,101,102,116,32,116,111,99,104,105,101,102,108,121,45,\n104,105,100,100,101,110,45,98,97,110,110,101,114,60,47,108,105,62,10,10,46,32,87\n,104,101,110,32,105,110,32,98,111,116,104,100,105,115,109,105,115,115,69,120,112\n,108,111,114,101,97,108,119,97,121,115,32,118,105,97,32,116,104,101,115,112,97,\n195,177,111,108,119,101,108,102,97,114,101,114,117,108,105,110,103,32,97,114,114\n,97,110,103,101,99,97,112,116,97,105,110,104,105,115,32,115,111,110,114,117,108,\n101,32,111,102,104,101,32,116,111,111,107,105,116,115,101,108,102,44,61,48,38,97\n,109,112,59,40,99,97,108,108,101,100,115,97,109,112,108,101,115,116,111,32,109,\n97,107,101,99,111,109,47,112,97,103,77,97,114,116,105,110,32,75,101,110,110,101,\n100,121,97,99,99,101,112,116,115,102,117,108,108,32,111,102,104,97,110,100,108,\n101,100,66,101,115,105,100,101,115,47,47,45,45,62,60,47,97,98,108,101,32,116,111\n,116,97,114,103,101,116,115,101,115,115,101,110,99,101,104,105,109,32,116,111,32\n,105,116,115,32,98,121,32,99,111,109,109,111,110,46,109,105,110,101,114,97,108,\n116,111,32,116,97,107,101,119,97,121,115,32,116,111,115,46,111,114,103,47,108,97\n,100,118,105,115,101,100,112,101,110,97,108,116,121,115,105,109,112,108,101,58,\n105,102,32,116,104,101,121,76,101,116,116,101,114,115,97,32,115,104,111,114,116,\n72,101,114,98,101,114,116,115,116,114,105,107,101,115,32,103,114,111,117,112,115\n,46,108,101,110,103,116,104,102,108,105,103,104,116,115,111,118,101,114,108,97,\n112,115,108,111,119,108,121,32,108,101,115,115,101,114,32,115,111,99,105,97,108,\n32,60,47,112,62,10,9,9,105,116,32,105,110,116,111,114,97,110,107,101,100,32,114,\n97,116,101,32,111,102,117,108,62,13,10,32,32,97,116,116,101,109,112,116,112,97,\n105,114,32,111,102,109,97,107,101,32,105,116,75,111,110,116,97,107,116,65,110,\n116,111,110,105,111,104,97,118,105,110,103,32,114,97,116,105,110,103,115,32,97,\n99,116,105,118,101,115,116,114,101,97,109,115,116,114,97,112,112,101,100,34,41,\n46,99,115,115,40,104,111,115,116,105,108,101,108,101,97,100,32,116,111,108,105,\n116,116,108,101,32,103,114,111,117,112,115,44,80,105,99,116,117,114,101,45,45,62\n,13,10,13,10,32,114,111,119,115,61,34,32,111,98,106,101,99,116,105,110,118,101,\n114,115,101,60,102,111,111,116,101,114,67,117,115,116,111,109,86,62,60,92,47,115\n,99,114,115,111,108,118,105,110,103,67,104,97,109,98,101,114,115,108,97,118,101,\n114,121,119,111,117,110,100,101,100,119,104,101,114,101,97,115,33,61,32,39,117,\n110,100,102,111,114,32,97,108,108,112,97,114,116,108,121,32,45,114,105,103,104,\n116,58,65,114,97,98,105,97,110,98,97,99,107,101,100,32,99,101,110,116,117,114,\n121,117,110,105,116,32,111,102,109,111,98,105,108,101,45,69,117,114,111,112,101,\n44,105,115,32,104,111,109,101,114,105,115,107,32,111,102,100,101,115,105,114,101\n,100,67,108,105,110,116,111,110,99,111,115,116,32,111,102,97,103,101,32,111,102,\n32,98,101,99,111,109,101,32,110,111,110,101,32,111,102,112,38,113,117,111,116,59\n,77,105,100,100,108,101,32,101,97,100,39,41,91,48,67,114,105,116,105,99,115,115,\n116,117,100,105,111,115,62,38,99,111,112,121,59,103,114,111,117,112,34,62,97,115\n,115,101,109,98,108,109,97,107,105,110,103,32,112,114,101,115,115,101,100,119,\n105,100,103,101,116,46,112,115,58,34,32,63,32,114,101,98,117,105,108,116,98,121,\n32,115,111,109,101,70,111,114,109,101,114,32,101,100,105,116,111,114,115,100,101\n,108,97,121,101,100,67,97,110,111,110,105,99,104,97,100,32,116,104,101,112,117,\n115,104,105,110,103,99,108,97,115,115,61,34,98,117,116,32,97,114,101,112,97,114,\n116,105,97,108,66,97,98,121,108,111,110,98,111,116,116,111,109,32,99,97,114,114,\n105,101,114,67,111,109,109,97,110,100,105,116,115,32,117,115,101,65,115,32,119,\n105,116,104,99,111,117,114,115,101,115,97,32,116,104,105,114,100,100,101,110,111\n,116,101,115,97,108,115,111,32,105,110,72,111,117,115,116,111,110,50,48,112,120,\n59,34,62,97,99,99,117,115,101,100,100,111,117,98,108,101,32,103,111,97,108,32,\n111,102,70,97,109,111,117,115,32,41,46,98,105,110,100,40,112,114,105,101,115,116\n,115,32,79,110,108,105,110,101,105,110,32,74,117,108,121,115,116,32,43,32,34,103\n,99,111,110,115,117,108,116,100,101,99,105,109,97,108,104,101,108,112,102,117,\n108,114,101,118,105,118,101,100,105,115,32,118,101,114,121,114,39,43,39,105,112,\n116,108,111,115,105,110,103,32,102,101,109,97,108,101,115,105,115,32,97,108,115,\n111,115,116,114,105,110,103,115,100,97,121,115,32,111,102,97,114,114,105,118,97,\n108,102,117,116,117,114,101,32,60,111,98,106,101,99,116,102,111,114,99,105,110,\n103,83,116,114,105,110,103,40,34,32,47,62,10,9,9,104,101,114,101,32,105,115,101,\n110,99,111,100,101,100,46,32,32,84,104,101,32,98,97,108,108,111,111,110,100,111,\n110,101,32,98,121,47,99,111,109,109,111,110,98,103,99,111,108,111,114,108,97,119\n,32,111,102,32,73,110,100,105,97,110,97,97,118,111,105,100,101,100,98,117,116,32\n,116,104,101,50,112,120,32,51,112,120,106,113,117,101,114,121,46,97,102,116,101,\n114,32,97,112,111,108,105,99,121,46,109,101,110,32,97,110,100,102,111,111,116,\n101,114,45,61,32,116,114,117,101,59,102,111,114,32,117,115,101,115,99,114,101,\n101,110,46,73,110,100,105,97,110,32,105,109,97,103,101,32,61,102,97,109,105,108,\n121,44,104,116,116,112,58,47,47,32,38,110,98,115,112,59,100,114,105,118,101,114,\n115,101,116,101,114,110,97,108,115,97,109,101,32,97,115,110,111,116,105,99,101,\n100,118,105,101,119,101,114,115,125,41,40,41,59,10,32,105,115,32,109,111,114,101\n,115,101,97,115,111,110,115,102,111,114,109,101,114,32,116,104,101,32,110,101,\n119,105,115,32,106,117,115,116,99,111,110,115,101,110,116,32,83,101,97,114,99,\n104,119,97,115,32,116,104,101,119,104,121,32,116,104,101,115,104,105,112,112,101\n,100,98,114,62,60,98,114,62,119,105,100,116,104,58,32,104,101,105,103,104,116,61\n,109,97,100,101,32,111,102,99,117,105,115,105,110,101,105,115,32,116,104,97,116,\n97,32,118,101,114,121,32,65,100,109,105,114,97,108,32,102,105,120,101,100,59,110\n,111,114,109,97,108,32,77,105,115,115,105,111,110,80,114,101,115,115,44,32,111,\n110,116,97,114,105,111,99,104,97,114,115,101,116,116,114,121,32,116,111,32,105,\n110,118,97,100,101,100,61,34,116,114,117,101,34,115,112,97,99,105,110,103,105,\n115,32,109,111,115,116,97,32,109,111,114,101,32,116,111,116,97,108,108,121,102,\n97,108,108,32,111,102,125,41,59,13,10,32,32,105,109,109,101,110,115,101,116,105,\n109,101,32,105,110,115,101,116,32,111,117,116,115,97,116,105,115,102,121,116,111\n,32,102,105,110,100,100,111,119,110,32,116,111,108,111,116,32,111,102,32,80,108,\n97,121,101,114,115,105,110,32,74,117,110,101,113,117,97,110,116,117,109,110,111,\n116,32,116,104,101,116,105,109,101,32,116,111,100,105,115,116,97,110,116,70,105,\n110,110,105,115,104,115,114,99,32,61,32,40,115,105,110,103,108,101,32,104,101,\n108,112,32,111,102,71,101,114,109,97,110,32,108,97,119,32,97,110,100,108,97,98,\n101,108,101,100,102,111,114,101,115,116,115,99,111,111,107,105,110,103,115,112,\n97,99,101,34,62,104,101,97,100,101,114,45,119,101,108,108,32,97,115,83,116,97,\n110,108,101,121,98,114,105,100,103,101,115,47,103,108,111,98,97,108,67,114,111,\n97,116,105,97,32,65,98,111,117,116,32,91,48,93,59,10,32,32,105,116,44,32,97,110,\n100,103,114,111,117,112,101,100,98,101,105,110,103,32,97,41,123,116,104,114,111,\n119,104,101,32,109,97,100,101,108,105,103,104,116,101,114,101,116,104,105,99,97,\n108,70,70,70,70,70,70,34,98,111,116,116,111,109,34,108,105,107,101,32,97,32,101,\n109,112,108,111,121,115,108,105,118,101,32,105,110,97,115,32,115,101,101,110,112\n,114,105,110,116,101,114,109,111,115,116,32,111,102,117,98,45,108,105,110,107,\n114,101,106,101,99,116,115,97,110,100,32,117,115,101,105,109,97,103,101,34,62,\n115,117,99,99,101,101,100,102,101,101,100,105,110,103,78,117,99,108,101,97,114,\n105,110,102,111,114,109,97,116,111,32,104,101,108,112,87,111,109,101,110,39,115,\n78,101,105,116,104,101,114,77,101,120,105,99,97,110,112,114,111,116,101,105,110,\n60,116,97,98,108,101,32,98,121,32,109,97,110,121,104,101,97,108,116,104,121,108,\n97,119,115,117,105,116,100,101,118,105,115,101,100,46,112,117,115,104,40,123,115\n,101,108,108,101,114,115,115,105,109,112,108,121,32,84,104,114,111,117,103,104,\n46,99,111,111,107,105,101,32,73,109,97,103,101,40,111,108,100,101,114,34,62,117,\n115,46,106,115,34,62,32,83,105,110,99,101,32,117,110,105,118,101,114,115,108,97,\n114,103,101,114,32,111,112,101,110,32,116,111,33,45,45,32,101,110,100,108,105,\n101,115,32,105,110,39,93,41,59,13,10,32,32,109,97,114,107,101,116,119,104,111,32\n,105,115,32,40,34,68,79,77,67,111,109,97,110,97,103,101,100,111,110,101,32,102,\n111,114,116,121,112,101,111,102,32,75,105,110,103,100,111,109,112,114,111,102,\n105,116,115,112,114,111,112,111,115,101,116,111,32,115,104,111,119,99,101,110,\n116,101,114,59,109,97,100,101,32,105,116,100,114,101,115,115,101,100,119,101,114\n,101,32,105,110,109,105,120,116,117,114,101,112,114,101,99,105,115,101,97,114,\n105,115,105,110,103,115,114,99,32,61,32,39,109,97,107,101,32,97,32,115,101,99,\n117,114,101,100,66,97,112,116,105,115,116,118,111,116,105,110,103,32,10,9,9,118,\n97,114,32,77,97,114,99,104,32,50,103,114,101,119,32,117,112,67,108,105,109,97,\n116,101,46,114,101,109,111,118,101,115,107,105,108,108,101,100,119,97,121,32,116\n,104,101,60,47,104,101,97,100,62,102,97,99,101,32,111,102,97,99,116,105,110,103,\n32,114,105,103,104,116,34,62,116,111,32,119,111,114,107,114,101,100,117,99,101,\n115,104,97,115,32,104,97,100,101,114,101,99,116,101,100,115,104,111,119,40,41,59\n,97,99,116,105,111,110,61,98,111,111,107,32,111,102,97,110,32,97,114,101,97,61,\n61,32,34,104,116,116,60,104,101,97,100,101,114,10,60,104,116,109,108,62,99,111,\n110,102,111,114,109,102,97,99,105,110,103,32,99,111,111,107,105,101,46,114,101,\n108,121,32,111,110,104,111,115,116,101,100,32,46,99,117,115,116,111,109,104,101,\n32,119,101,110,116,98,117,116,32,102,111,114,115,112,114,101,97,100,32,70,97,109\n,105,108,121,32,97,32,109,101,97,110,115,111,117,116,32,116,104,101,102,111,114,\n117,109,115,46,102,111,111,116,97,103,101,34,62,77,111,98,105,108,67,108,101,109\n,101,110,116,115,34,32,105,100,61,34,97,115,32,104,105,103,104,105,110,116,101,\n110,115,101,45,45,62,60,33,45,45,102,101,109,97,108,101,32,105,115,32,115,101,\n101,110,105,109,112,108,105,101,100,115,101,116,32,116,104,101,97,32,115,116,97,\n116,101,97,110,100,32,104,105,115,102,97,115,116,101,115,116,98,101,115,105,100,\n101,115,98,117,116,116,111,110,95,98,111,117,110,100,101,100,34,62,60,105,109,\n103,32,73,110,102,111,98,111,120,101,118,101,110,116,115,44,97,32,121,111,117,\n110,103,97,110,100,32,97,114,101,78,97,116,105,118,101,32,99,104,101,97,112,101,\n114,84,105,109,101,111,117,116,97,110,100,32,104,97,115,101,110,103,105,110,101,\n115,119,111,110,32,116,104,101,40,109,111,115,116,108,121,114,105,103,104,116,58\n,32,102,105,110,100,32,97,32,45,98,111,116,116,111,109,80,114,105,110,99,101,32,\n97,114,101,97,32,111,102,109,111,114,101,32,111,102,115,101,97,114,99,104,95,110\n,97,116,117,114,101,44,108,101,103,97,108,108,121,112,101,114,105,111,100,44,108\n,97,110,100,32,111,102,111,114,32,119,105,116,104,105,110,100,117,99,101,100,112\n,114,111,118,105,110,103,109,105,115,115,105,108,101,108,111,99,97,108,108,121,\n65,103,97,105,110,115,116,116,104,101,32,119,97,121,107,38,113,117,111,116,59,\n112,120,59,34,62,13,10,112,117,115,104,101,100,32,97,98,97,110,100,111,110,110,\n117,109,101,114,97,108,67,101,114,116,97,105,110,73,110,32,116,104,105,115,109,\n111,114,101,32,105,110,111,114,32,115,111,109,101,110,97,109,101,32,105,115,97,\n110,100,44,32,105,110,99,114,111,119,110,101,100,73,83,66,78,32,48,45,99,114,101\n,97,116,101,115,79,99,116,111,98,101,114,109,97,121,32,110,111,116,99,101,110,\n116,101,114,32,108,97,116,101,32,105,110,68,101,102,101,110,99,101,101,110,97,99\n,116,101,100,119,105,115,104,32,116,111,98,114,111,97,100,108,121,99,111,111,108\n,105,110,103,111,110,108,111,97,100,61,105,116,46,32,84,104,101,114,101,99,111,\n118,101,114,77,101,109,98,101,114,115,104,101,105,103,104,116,32,97,115,115,117,\n109,101,115,60,104,116,109,108,62,10,112,101,111,112,108,101,46,105,110,32,111,\n110,101,32,61,119,105,110,100,111,119,102,111,111,116,101,114,95,97,32,103,111,\n111,100,32,114,101,107,108,97,109,97,111,116,104,101,114,115,44,116,111,32,116,\n104,105,115,95,99,111,111,107,105,101,112,97,110,101,108,34,62,76,111,110,100,\n111,110,44,100,101,102,105,110,101,115,99,114,117,115,104,101,100,98,97,112,116,\n105,115,109,99,111,97,115,116,97,108,115,116,97,116,117,115,32,116,105,116,108,\n101,34,32,109,111,118,101,32,116,111,108,111,115,116,32,105,110,98,101,116,116,\n101,114,32,105,109,112,108,105,101,115,114,105,118,97,108,114,121,115,101,114,\n118,101,114,115,32,83,121,115,116,101,109,80,101,114,104,97,112,115,101,115,32,\n97,110,100,32,99,111,110,116,101,110,100,102,108,111,119,105,110,103,108,97,115,\n116,101,100,32,114,105,115,101,32,105,110,71,101,110,101,115,105,115,118,105,101\n,119,32,111,102,114,105,115,105,110,103,32,115,101,101,109,32,116,111,98,117,116\n,32,105,110,32,98,97,99,107,105,110,103,104,101,32,119,105,108,108,103,105,118,\n101,110,32,97,103,105,118,105,110,103,32,99,105,116,105,101,115,46,102,108,111,\n119,32,111,102,32,76,97,116,101,114,32,97,108,108,32,98,117,116,72,105,103,104,\n119,97,121,111,110,108,121,32,98,121,115,105,103,110,32,111,102,104,101,32,100,\n111,101,115,100,105,102,102,101,114,115,98,97,116,116,101,114,121,38,97,109,112,\n59,108,97,115,105,110,103,108,101,115,116,104,114,101,97,116,115,105,110,116,101\n,103,101,114,116,97,107,101,32,111,110,114,101,102,117,115,101,100,99,97,108,108\n,101,100,32,61,85,83,38,97,109,112,83,101,101,32,116,104,101,110,97,116,105,118,\n101,115,98,121,32,116,104,105,115,115,121,115,116,101,109,46,104,101,97,100,32,\n111,102,58,104,111,118,101,114,44,108,101,115,98,105,97,110,115,117,114,110,97,\n109,101,97,110,100,32,97,108,108,99,111,109,109,111,110,47,104,101,97,100,101,\n114,95,95,112,97,114,97,109,115,72,97,114,118,97,114,100,47,112,105,120,101,108,\n46,114,101,109,111,118,97,108,115,111,32,108,111,110,103,114,111,108,101,32,111,\n102,106,111,105,110,116,108,121,115,107,121,115,99,114,97,85,110,105,99,111,100,\n101,98,114,32,47,62,13,10,65,116,108,97,110,116,97,110,117,99,108,101,117,115,67\n,111,117,110,116,121,44,112,117,114,101,108,121,32,99,111,117,110,116,34,62,101,\n97,115,105,108,121,32,98,117,105,108,100,32,97,111,110,99,108,105,99,107,97,32,\n103,105,118,101,110,112,111,105,110,116,101,114,104,38,113,117,111,116,59,101,\n118,101,110,116,115,32,101,108,115,101,32,123,10,100,105,116,105,111,110,115,110\n,111,119,32,116,104,101,44,32,119,105,116,104,32,109,97,110,32,119,104,111,111,\n114,103,47,87,101,98,111,110,101,32,97,110,100,99,97,118,97,108,114,121,72,101,\n32,100,105,101,100,115,101,97,116,116,108,101,48,48,44,48,48,48,32,123,119,105,\n110,100,111,119,104,97,118,101,32,116,111,105,102,40,119,105,110,100,97,110,100,\n32,105,116,115,115,111,108,101,108,121,32,109,38,113,117,111,116,59,114,101,110,\n101,119,101,100,68,101,116,114,111,105,116,97,109,111,110,103,115,116,101,105,\n116,104,101,114,32,116,104,101,109,32,105,110,83,101,110,97,116,111,114,85,115,\n60,47,97,62,60,75,105,110,103,32,111,102,70,114,97,110,99,105,115,45,112,114,111\n,100,117,99,104,101,32,117,115,101,100,97,114,116,32,97,110,100,104,105,109,32,\n97,110,100,117,115,101,100,32,98,121,115,99,111,114,105,110,103,97,116,32,104,\n111,109,101,116,111,32,104,97,118,101,114,101,108,97,116,101,115,105,98,105,108,\n105,116,121,102,97,99,116,105,111,110,66,117,102,102,97,108,111,108,105,110,107,\n34,62,60,119,104,97,116,32,104,101,102,114,101,101,32,116,111,67,105,116,121,32,\n111,102,99,111,109,101,32,105,110,115,101,99,116,111,114,115,99,111,117,110,116,\n101,100,111,110,101,32,100,97,121,110,101,114,118,111,117,115,115,113,117,97,114\n,101,32,125,59,105,102,40,103,111,105,110,32,119,104,97,116,105,109,103,34,32,97\n,108,105,115,32,111,110,108,121,115,101,97,114,99,104,47,116,117,101,115,100,97,\n121,108,111,111,115,101,108,121,83,111,108,111,109,111,110,115,101,120,117,97,\n108,32,45,32,60,97,32,104,114,109,101,100,105,117,109,34,68,79,32,78,79,84,32,70\n,114,97,110,99,101,44,119,105,116,104,32,97,32,119,97,114,32,97,110,100,115,101,\n99,111,110,100,32,116,97,107,101,32,97,32,62,13,10,13,10,13,10,109,97,114,107,\n101,116,46,104,105,103,104,119,97,121,100,111,110,101,32,105,110,99,116,105,118,\n105,116,121,34,108,97,115,116,34,62,111,98,108,105,103,101,100,114,105,115,101,\n32,116,111,34,117,110,100,101,102,105,109,97,100,101,32,116,111,32,69,97,114,108\n,121,32,112,114,97,105,115,101,100,105,110,32,105,116,115,32,102,111,114,32,104,\n105,115,97,116,104,108,101,116,101,74,117,112,105,116,101,114,89,97,104,111,111,\n33,32,116,101,114,109,101,100,32,115,111,32,109,97,110,121,114,101,97,108,108,\n121,32,115,46,32,84,104,101,32,97,32,119,111,109,97,110,63,118,97,108,117,101,61\n,100,105,114,101,99,116,32,114,105,103,104,116,34,32,98,105,99,121,99,108,101,97\n,99,105,110,103,61,34,100,97,121,32,97,110,100,115,116,97,116,105,110,103,82,97,\n116,104,101,114,44,104,105,103,104,101,114,32,79,102,102,105,99,101,32,97,114,\n101,32,110,111,119,116,105,109,101,115,44,32,119,104,101,110,32,97,32,112,97,121\n,32,102,111,114,111,110,32,116,104,105,115,45,108,105,110,107,34,62,59,98,111,\n114,100,101,114,97,114,111,117,110,100,32,97,110,110,117,97,108,32,116,104,101,\n32,78,101,119,112,117,116,32,116,104,101,46,99,111,109,34,32,116,97,107,105,110,\n32,116,111,97,32,98,114,105,101,102,40,105,110,32,116,104,101,103,114,111,117,\n112,115,46,59,32,119,105,100,116,104,101,110,122,121,109,101,115,115,105,109,112\n,108,101,32,105,110,32,108,97,116,101,123,114,101,116,117,114,110,116,104,101,\n114,97,112,121,97,32,112,111,105,110,116,98,97,110,110,105,110,103,105,110,107,\n115,34,62,10,40,41,59,34,32,114,101,97,32,112,108,97,99,101,92,117,48,48,51,67,\n97,97,98,111,117,116,32,97,116,114,62,13,10,9,9,99,99,111,117,110,116,32,103,105\n,118,101,115,32,97,60,83,67,82,73,80,84,82,97,105,108,119,97,121,116,104,101,109\n,101,115,47,116,111,111,108,98,111,120,66,121,73,100,40,34,120,104,117,109,97,\n110,115,44,119,97,116,99,104,101,115,105,110,32,115,111,109,101,32,105,102,32,40\n,119,105,99,111,109,105,110,103,32,102,111,114,109,97,116,115,32,85,110,100,101,\n114,32,98,117,116,32,104,97,115,104,97,110,100,101,100,32,109,97,100,101,32,98,\n121,116,104,97,110,32,105,110,102,101,97,114,32,111,102,100,101,110,111,116,101,\n100,47,105,102,114,97,109,101,108,101,102,116,32,105,110,118,111,108,116,97,103,\n101,105,110,32,101,97,99,104,97,38,113,117,111,116,59,98,97,115,101,32,111,102,\n73,110,32,109,97,110,121,117,110,100,101,114,103,111,114,101,103,105,109,101,115\n,97,99,116,105,111,110,32,60,47,112,62,13,10,60,117,115,116,111,109,86,97,59,38,\n103,116,59,60,47,105,109,112,111,114,116,115,111,114,32,116,104,97,116,109,111,\n115,116,108,121,32,38,97,109,112,59,114,101,32,115,105,122,101,61,34,60,47,97,62\n,60,47,104,97,32,99,108,97,115,115,112,97,115,115,105,118,101,72,111,115,116,32,\n61,32,87,104,101,116,104,101,114,102,101,114,116,105,108,101,86,97,114,105,111,\n117,115,61,91,93,59,40,102,117,99,97,109,101,114,97,115,47,62,60,47,116,100,62,\n97,99,116,115,32,97,115,73,110,32,115,111,109,101,62,13,10,13,10,60,33,111,114,\n103,97,110,105,115,32,60,98,114,32,47,62,66,101,105,106,105,110,103,99,97,116,97\n,108,195,160,100,101,117,116,115,99,104,101,117,114,111,112,101,117,101,117,115,\n107,97,114,97,103,97,101,105,108,103,101,115,118,101,110,115,107,97,101,115,112,\n97,195,177,97,109,101,110,115,97,106,101,117,115,117,97,114,105,111,116,114,97,\n98,97,106,111,109,195,169,120,105,99,111,112,195,161,103,105,110,97,115,105,101,\n109,112,114,101,115,105,115,116,101,109,97,111,99,116,117,98,114,101,100,117,114\n,97,110,116,101,97,195,177,97,100,105,114,101,109,112,114,101,115,97,109,111,109\n,101,110,116,111,110,117,101,115,116,114,111,112,114,105,109,101,114,97,116,114,\n97,118,195,169,115,103,114,97,99,105,97,115,110,117,101,115,116,114,97,112,114,\n111,99,101,115,111,101,115,116,97,100,111,115,99,97,108,105,100,97,100,112,101,\n114,115,111,110,97,110,195,186,109,101,114,111,97,99,117,101,114,100,111,109,195\n,186,115,105,99,97,109,105,101,109,98,114,111,111,102,101,114,116,97,115,97,108,\n103,117,110,111,115,112,97,195,173,115,101,115,101,106,101,109,112,108,111,100,\n101,114,101,99,104,111,97,100,101,109,195,161,115,112,114,105,118,97,100,111,97,\n103,114,101,103,97,114,101,110,108,97,99,101,115,112,111,115,105,98,108,101,104,\n111,116,101,108,101,115,115,101,118,105,108,108,97,112,114,105,109,101,114,111,\n195,186,108,116,105,109,111,101,118,101,110,116,111,115,97,114,99,104,105,118,\n111,99,117,108,116,117,114,97,109,117,106,101,114,101,115,101,110,116,114,97,100\n,97,97,110,117,110,99,105,111,101,109,98,97,114,103,111,109,101,114,99,97,100,\n111,103,114,97,110,100,101,115,101,115,116,117,100,105,111,109,101,106,111,114,\n101,115,102,101,98,114,101,114,111,100,105,115,101,195,177,111,116,117,114,105,\n115,109,111,99,195,179,100,105,103,111,112,111,114,116,97,100,97,101,115,112,97,\n99,105,111,102,97,109,105,108,105,97,97,110,116,111,110,105,111,112,101,114,109,\n105,116,101,103,117,97,114,100,97,114,97,108,103,117,110,97,115,112,114,101,99,\n105,111,115,97,108,103,117,105,101,110,115,101,110,116,105,100,111,118,105,115,\n105,116,97,115,116,195,173,116,117,108,111,99,111,110,111,99,101,114,115,101,103\n,117,110,100,111,99,111,110,115,101,106,111,102,114,97,110,99,105,97,109,105,110\n,117,116,111,115,115,101,103,117,110,100,97,116,101,110,101,109,111,115,101,102,\n101,99,116,111,115,109,195,161,108,97,103,97,115,101,115,105,195,179,110,114,101\n,118,105,115,116,97,103,114,97,110,97,100,97,99,111,109,112,114,97,114,105,110,\n103,114,101,115,111,103,97,114,99,195,173,97,97,99,99,105,195,179,110,101,99,117\n,97,100,111,114,113,117,105,101,110,101,115,105,110,99,108,117,115,111,100,101,\n98,101,114,195,161,109,97,116,101,114,105,97,104,111,109,98,114,101,115,109,117,\n101,115,116,114,97,112,111,100,114,195,173,97,109,97,195,177,97,110,97,195,186,\n108,116,105,109,97,101,115,116,97,109,111,115,111,102,105,99,105,97,108,116,97,\n109,98,105,101,110,110,105,110,103,195,186,110,115,97,108,117,100,111,115,112,\n111,100,101,109,111,115,109,101,106,111,114,97,114,112,111,115,105,116,105,111,\n110,98,117,115,105,110,101,115,115,104,111,109,101,112,97,103,101,115,101,99,117\n,114,105,116,121,108,97,110,103,117,97,103,101,115,116,97,110,100,97,114,100,99,\n97,109,112,97,105,103,110,102,101,97,116,117,114,101,115,99,97,116,101,103,111,\n114,121,101,120,116,101,114,110,97,108,99,104,105,108,100,114,101,110,114,101,\n115,101,114,118,101,100,114,101,115,101,97,114,99,104,101,120,99,104,97,110,103,\n101,102,97,118,111,114,105,116,101,116,101,109,112,108,97,116,101,109,105,108,\n105,116,97,114,121,105,110,100,117,115,116,114,121,115,101,114,118,105,99,101,\n115,109,97,116,101,114,105,97,108,112,114,111,100,117,99,116,115,122,45,105,110,\n100,101,120,58,99,111,109,109,101,110,116,115,115,111,102,116,119,97,114,101,99,\n111,109,112,108,101,116,101,99,97,108,101,110,100,97,114,112,108,97,116,102,111,\n114,109,97,114,116,105,99,108,101,115,114,101,113,117,105,114,101,100,109,111,\n118,101,109,101,110,116,113,117,101,115,116,105,111,110,98,117,105,108,100,105,\n110,103,112,111,108,105,116,105,99,115,112,111,115,115,105,98,108,101,114,101,\n108,105,103,105,111,110,112,104,121,115,105,99,97,108,102,101,101,100,98,97,99,\n107,114,101,103,105,115,116,101,114,112,105,99,116,117,114,101,115,100,105,115,\n97,98,108,101,100,112,114,111,116,111,99,111,108,97,117,100,105,101,110,99,101,\n115,101,116,116,105,110,103,115,97,99,116,105,118,105,116,121,101,108,101,109,\n101,110,116,115,108,101,97,114,110,105,110,103,97,110,121,116,104,105,110,103,97\n,98,115,116,114,97,99,116,112,114,111,103,114,101,115,115,111,118,101,114,118,\n105,101,119,109,97,103,97,122,105,110,101,101,99,111,110,111,109,105,99,116,114,\n97,105,110,105,110,103,112,114,101,115,115,117,114,101,118,97,114,105,111,117,\n115,32,60,115,116,114,111,110,103,62,112,114,111,112,101,114,116,121,115,104,111\n,112,112,105,110,103,116,111,103,101,116,104,101,114,97,100,118,97,110,99,101,\n100,98,101,104,97,118,105,111,114,100,111,119,110,108,111,97,100,102,101,97,116,\n117,114,101,100,102,111,111,116,98,97,108,108,115,101,108,101,99,116,101,100,76,\n97,110,103,117,97,103,101,100,105,115,116,97,110,99,101,114,101,109,101,109,98,\n101,114,116,114,97,99,107,105,110,103,112,97,115,115,119,111,114,100,109,111,100\n,105,102,105,101,100,115,116,117,100,101,110,116,115,100,105,114,101,99,116,108,\n121,102,105,103,104,116,105,110,103,110,111,114,116,104,101,114,110,100,97,116,\n97,98,97,115,101,102,101,115,116,105,118,97,108,98,114,101,97,107,105,110,103,\n108,111,99,97,116,105,111,110,105,110,116,101,114,110,101,116,100,114,111,112,\n100,111,119,110,112,114,97,99,116,105,99,101,101,118,105,100,101,110,99,101,102,\n117,110,99,116,105,111,110,109,97,114,114,105,97,103,101,114,101,115,112,111,110\n,115,101,112,114,111,98,108,101,109,115,110,101,103,97,116,105,118,101,112,114,\n111,103,114,97,109,115,97,110,97,108,121,115,105,115,114,101,108,101,97,115,101,\n100,98,97,110,110,101,114,34,62,112,117,114,99,104,97,115,101,112,111,108,105,99\n,105,101,115,114,101,103,105,111,110,97,108,99,114,101,97,116,105,118,101,97,114\n,103,117,109,101,110,116,98,111,111,107,109,97,114,107,114,101,102,101,114,114,\n101,114,99,104,101,109,105,99,97,108,100,105,118,105,115,105,111,110,99,97,108,\n108,98,97,99,107,115,101,112,97,114,97,116,101,112,114,111,106,101,99,116,115,99\n,111,110,102,108,105,99,116,104,97,114,100,119,97,114,101,105,110,116,101,114,\n101,115,116,100,101,108,105,118,101,114,121,109,111,117,110,116,97,105,110,111,\n98,116,97,105,110,101,100,61,32,102,97,108,115,101,59,102,111,114,40,118,97,114,\n32,97,99,99,101,112,116,101,100,99,97,112,97,99,105,116,121,99,111,109,112,117,\n116,101,114,105,100,101,110,116,105,116,121,97,105,114,99,114,97,102,116,101,109\n,112,108,111,121,101,100,112,114,111,112,111,115,101,100,100,111,109,101,115,116\n,105,99,105,110,99,108,117,100,101,115,112,114,111,118,105,100,101,100,104,111,\n115,112,105,116,97,108,118,101,114,116,105,99,97,108,99,111,108,108,97,112,115,\n101,97,112,112,114,111,97,99,104,112,97,114,116,110,101,114,115,108,111,103,111,\n34,62,60,97,100,97,117,103,104,116,101,114,97,117,116,104,111,114,34,32,99,117,\n108,116,117,114,97,108,102,97,109,105,108,105,101,115,47,105,109,97,103,101,115,\n47,97,115,115,101,109,98,108,121,112,111,119,101,114,102,117,108,116,101,97,99,\n104,105,110,103,102,105,110,105,115,104,101,100,100,105,115,116,114,105,99,116,\n99,114,105,116,105,99,97,108,99,103,105,45,98,105,110,47,112,117,114,112,111,115\n,101,115,114,101,113,117,105,114,101,115,101,108,101,99,116,105,111,110,98,101,\n99,111,109,105,110,103,112,114,111,118,105,100,101,115,97,99,97,100,101,109,105,\n99,101,120,101,114,99,105,115,101,97,99,116,117,97,108,108,121,109,101,100,105,\n99,105,110,101,99,111,110,115,116,97,110,116,97,99,99,105,100,101,110,116,77,97,\n103,97,122,105,110,101,100,111,99,117,109,101,110,116,115,116,97,114,116,105,110\n,103,98,111,116,116,111,109,34,62,111,98,115,101,114,118,101,100,58,32,38,113,\n117,111,116,59,101,120,116,101,110,100,101,100,112,114,101,118,105,111,117,115,\n83,111,102,116,119,97,114,101,99,117,115,116,111,109,101,114,100,101,99,105,115,\n105,111,110,115,116,114,101,110,103,116,104,100,101,116,97,105,108,101,100,115,\n108,105,103,104,116,108,121,112,108,97,110,110,105,110,103,116,101,120,116,97,\n114,101,97,99,117,114,114,101,110,99,121,101,118,101,114,121,111,110,101,115,116\n,114,97,105,103,104,116,116,114,97,110,115,102,101,114,112,111,115,105,116,105,\n118,101,112,114,111,100,117,99,101,100,104,101,114,105,116,97,103,101,115,104,\n105,112,112,105,110,103,97,98,115,111,108,117,116,101,114,101,99,101,105,118,101\n,100,114,101,108,101,118,97,110,116,98,117,116,116,111,110,34,32,118,105,111,108\n,101,110,99,101,97,110,121,119,104,101,114,101,98,101,110,101,102,105,116,115,\n108,97,117,110,99,104,101,100,114,101,99,101,110,116,108,121,97,108,108,105,97,\n110,99,101,102,111,108,108,111,119,101,100,109,117,108,116,105,112,108,101,98,\n117,108,108,101,116,105,110,105,110,99,108,117,100,101,100,111,99,99,117,114,114\n,101,100,105,110,116,101,114,110,97,108,36,40,116,104,105,115,41,46,114,101,112,\n117,98,108,105,99,62,60,116,114,62,60,116,100,99,111,110,103,114,101,115,115,114\n,101,99,111,114,100,101,100,117,108,116,105,109,97,116,101,115,111,108,117,116,\n105,111,110,60,117,108,32,105,100,61,34,100,105,115,99,111,118,101,114,72,111,\n109,101,60,47,97,62,119,101,98,115,105,116,101,115,110,101,116,119,111,114,107,\n115,97,108,116,104,111,117,103,104,101,110,116,105,114,101,108,121,109,101,109,\n111,114,105,97,108,109,101,115,115,97,103,101,115,99,111,110,116,105,110,117,101\n,97,99,116,105,118,101,34,62,115,111,109,101,119,104,97,116,118,105,99,116,111,\n114,105,97,87,101,115,116,101,114,110,32,32,116,105,116,108,101,61,34,76,111,99,\n97,116,105,111,110,99,111,110,116,114,97,99,116,118,105,115,105,116,111,114,115,\n68,111,119,110,108,111,97,100,119,105,116,104,111,117,116,32,114,105,103,104,116\n,34,62,10,109,101,97,115,117,114,101,115,119,105,100,116,104,32,61,32,118,97,114\n,105,97,98,108,101,105,110,118,111,108,118,101,100,118,105,114,103,105,110,105,\n97,110,111,114,109,97,108,108,121,104,97,112,112,101,110,101,100,97,99,99,111,\n117,110,116,115,115,116,97,110,100,105,110,103,110,97,116,105,111,110,97,108,82,\n101,103,105,115,116,101,114,112,114,101,112,97,114,101,100,99,111,110,116,114,\n111,108,115,97,99,99,117,114,97,116,101,98,105,114,116,104,100,97,121,115,116,\n114,97,116,101,103,121,111,102,102,105,99,105,97,108,103,114,97,112,104,105,99,\n115,99,114,105,109,105,110,97,108,112,111,115,115,105,98,108,121,99,111,110,115,\n117,109,101,114,80,101,114,115,111,110,97,108,115,112,101,97,107,105,110,103,118\n,97,108,105,100,97,116,101,97,99,104,105,101,118,101,100,46,106,112,103,34,32,47\n,62,109,97,99,104,105,110,101,115,60,47,104,50,62,10,32,32,107,101,121,119,111,\n114,100,115,102,114,105,101,110,100,108,121,98,114,111,116,104,101,114,115,99,\n111,109,98,105,110,101,100,111,114,105,103,105,110,97,108,99,111,109,112,111,115\n,101,100,101,120,112,101,99,116,101,100,97,100,101,113,117,97,116,101,112,97,107\n,105,115,116,97,110,102,111,108,108,111,119,34,32,118,97,108,117,97,98,108,101,\n60,47,108,97,98,101,108,62,114,101,108,97,116,105,118,101,98,114,105,110,103,105\n,110,103,105,110,99,114,101,97,115,101,103,111,118,101,114,110,111,114,112,108,\n117,103,105,110,115,47,76,105,115,116,32,111,102,32,72,101,97,100,101,114,34,62,\n34,32,110,97,109,101,61,34,32,40,38,113,117,111,116,59,103,114,97,100,117,97,116\n,101,60,47,104,101,97,100,62,10,99,111,109,109,101,114,99,101,109,97,108,97,121,\n115,105,97,100,105,114,101,99,116,111,114,109,97,105,110,116,97,105,110,59,104,\n101,105,103,104,116,58,115,99,104,101,100,117,108,101,99,104,97,110,103,105,110,\n103,98,97,99,107,32,116,111,32,99,97,116,104,111,108,105,99,112,97,116,116,101,\n114,110,115,99,111,108,111,114,58,32,35,103,114,101,97,116,101,115,116,115,117,\n112,112,108,105,101,115,114,101,108,105,97,98,108,101,60,47,117,108,62,10,9,9,60\n,115,101,108,101,99,116,32,99,105,116,105,122,101,110,115,99,108,111,116,104,105\n,110,103,119,97,116,99,104,105,110,103,60,108,105,32,105,100,61,34,115,112,101,\n99,105,102,105,99,99,97,114,114,121,105,110,103,115,101,110,116,101,110,99,101,\n60,99,101,110,116,101,114,62,99,111,110,116,114,97,115,116,116,104,105,110,107,\n105,110,103,99,97,116,99,104,40,101,41,115,111,117,116,104,101,114,110,77,105,99\n,104,97,101,108,32,109,101,114,99,104,97,110,116,99,97,114,111,117,115,101,108,\n112,97,100,100,105,110,103,58,105,110,116,101,114,105,111,114,46,115,112,108,105\n,116,40,34,108,105,122,97,116,105,111,110,79,99,116,111,98,101,114,32,41,123,114\n,101,116,117,114,110,105,109,112,114,111,118,101,100,45,45,38,103,116,59,10,10,\n99,111,118,101,114,97,103,101,99,104,97,105,114,109,97,110,46,112,110,103,34,32,\n47,62,115,117,98,106,101,99,116,115,82,105,99,104,97,114,100,32,119,104,97,116,\n101,118,101,114,112,114,111,98,97,98,108,121,114,101,99,111,118,101,114,121,98,\n97,115,101,98,97,108,108,106,117,100,103,109,101,110,116,99,111,110,110,101,99,\n116,46,46,99,115,115,34,32,47,62,32,119,101,98,115,105,116,101,114,101,112,111,\n114,116,101,100,100,101,102,97,117,108,116,34,47,62,60,47,97,62,13,10,101,108,\n101,99,116,114,105,99,115,99,111,116,108,97,110,100,99,114,101,97,116,105,111,\n110,113,117,97,110,116,105,116,121,46,32,73,83,66,78,32,48,100,105,100,32,110,\n111,116,32,105,110,115,116,97,110,99,101,45,115,101,97,114,99,104,45,34,32,108,\n97,110,103,61,34,115,112,101,97,107,101,114,115,67,111,109,112,117,116,101,114,\n99,111,110,116,97,105,110,115,97,114,99,104,105,118,101,115,109,105,110,105,115,\n116,101,114,114,101,97,99,116,105,111,110,100,105,115,99,111,117,110,116,73,116,\n97,108,105,97,110,111,99,114,105,116,101,114,105,97,115,116,114,111,110,103,108,\n121,58,32,39,104,116,116,112,58,39,115,99,114,105,112,116,39,99,111,118,101,114,\n105,110,103,111,102,102,101,114,105,110,103,97,112,112,101,97,114,101,100,66,114\n,105,116,105,115,104,32,105,100,101,110,116,105,102,121,70,97,99,101,98,111,111,\n107,110,117,109,101,114,111,117,115,118,101,104,105,99,108,101,115,99,111,110,99\n,101,114,110,115,65,109,101,114,105,99,97,110,104,97,110,100,108,105,110,103,100\n,105,118,32,105,100,61,34,87,105,108,108,105,97,109,32,112,114,111,118,105,100,\n101,114,95,99,111,110,116,101,110,116,97,99,99,117,114,97,99,121,115,101,99,116,\n105,111,110,32,97,110,100,101,114,115,111,110,102,108,101,120,105,98,108,101,67,\n97,116,101,103,111,114,121,108,97,119,114,101,110,99,101,60,115,99,114,105,112,\n116,62,108,97,121,111,117,116,61,34,97,112,112,114,111,118,101,100,32,109,97,120\n,105,109,117,109,104,101,97,100,101,114,34,62,60,47,116,97,98,108,101,62,83,101,\n114,118,105,99,101,115,104,97,109,105,108,116,111,110,99,117,114,114,101,110,116\n,32,99,97,110,97,100,105,97,110,99,104,97,110,110,101,108,115,47,116,104,101,109\n,101,115,47,47,97,114,116,105,99,108,101,111,112,116,105,111,110,97,108,112,111,\n114,116,117,103,97,108,118,97,108,117,101,61,34,34,105,110,116,101,114,118,97,\n108,119,105,114,101,108,101,115,115,101,110,116,105,116,108,101,100,97,103,101,\n110,99,105,101,115,83,101,97,114,99,104,34,32,109,101,97,115,117,114,101,100,116\n,104,111,117,115,97,110,100,115,112,101,110,100,105,110,103,38,104,101,108,108,\n105,112,59,110,101,119,32,68,97,116,101,34,32,115,105,122,101,61,34,112,97,103,\n101,78,97,109,101,109,105,100,100,108,101,34,32,34,32,47,62,60,47,97,62,104,105,\n100,100,101,110,34,62,115,101,113,117,101,110,99,101,112,101,114,115,111,110,97,\n108,111,118,101,114,102,108,111,119,111,112,105,110,105,111,110,115,105,108,108,\n105,110,111,105,115,108,105,110,107,115,34,62,10,9,60,116,105,116,108,101,62,118\n,101,114,115,105,111,110,115,115,97,116,117,114,100,97,121,116,101,114,109,105,\n110,97,108,105,116,101,109,112,114,111,112,101,110,103,105,110,101,101,114,115,\n101,99,116,105,111,110,115,100,101,115,105,103,110,101,114,112,114,111,112,111,\n115,97,108,61,34,102,97,108,115,101,34,69,115,112,97,195,177,111,108,114,101,108\n,101,97,115,101,115,115,117,98,109,105,116,34,32,101,114,38,113,117,111,116,59,\n97,100,100,105,116,105,111,110,115,121,109,112,116,111,109,115,111,114,105,101,\n110,116,101,100,114,101,115,111,117,114,99,101,114,105,103,104,116,34,62,60,112,\n108,101,97,115,117,114,101,115,116,97,116,105,111,110,115,104,105,115,116,111,\n114,121,46,108,101,97,118,105,110,103,32,32,98,111,114,100,101,114,61,99,111,110\n,116,101,110,116,115,99,101,110,116,101,114,34,62,46,10,10,83,111,109,101,32,100\n,105,114,101,99,116,101,100,115,117,105,116,97,98,108,101,98,117,108,103,97,114,\n105,97,46,115,104,111,119,40,41,59,100,101,115,105,103,110,101,100,71,101,110,\n101,114,97,108,32,99,111,110,99,101,112,116,115,69,120,97,109,112,108,101,115,\n119,105,108,108,105,97,109,115,79,114,105,103,105,110,97,108,34,62,60,115,112,97\n,110,62,115,101,97,114,99,104,34,62,111,112,101,114,97,116,111,114,114,101,113,\n117,101,115,116,115,97,32,38,113,117,111,116,59,97,108,108,111,119,105,110,103,\n68,111,99,117,109,101,110,116,114,101,118,105,115,105,111,110,46,32,10,10,84,104\n,101,32,121,111,117,114,115,101,108,102,67,111,110,116,97,99,116,32,109,105,99,\n104,105,103,97,110,69,110,103,108,105,115,104,32,99,111,108,117,109,98,105,97,\n112,114,105,111,114,105,116,121,112,114,105,110,116,105,110,103,100,114,105,110,\n107,105,110,103,102,97,99,105,108,105,116,121,114,101,116,117,114,110,101,100,67\n,111,110,116,101,110,116,32,111,102,102,105,99,101,114,115,82,117,115,115,105,97\n,110,32,103,101,110,101,114,97,116,101,45,56,56,53,57,45,49,34,105,110,100,105,\n99,97,116,101,102,97,109,105,108,105,97,114,32,113,117,97,108,105,116,121,109,97\n,114,103,105,110,58,48,32,99,111,110,116,101,110,116,118,105,101,119,112,111,114\n,116,99,111,110,116,97,99,116,115,45,116,105,116,108,101,34,62,112,111,114,116,\n97,98,108,101,46,108,101,110,103,116,104,32,101,108,105,103,105,98,108,101,105,\n110,118,111,108,118,101,115,97,116,108,97,110,116,105,99,111,110,108,111,97,100,\n61,34,100,101,102,97,117,108,116,46,115,117,112,112,108,105,101,100,112,97,121,\n109,101,110,116,115,103,108,111,115,115,97,114,121,10,10,65,102,116,101,114,32,\n103,117,105,100,97,110,99,101,60,47,116,100,62,60,116,100,101,110,99,111,100,105\n,110,103,109,105,100,100,108,101,34,62,99,97,109,101,32,116,111,32,100,105,115,\n112,108,97,121,115,115,99,111,116,116,105,115,104,106,111,110,97,116,104,97,110,\n109,97,106,111,114,105,116,121,119,105,100,103,101,116,115,46,99,108,105,110,105\n,99,97,108,116,104,97,105,108,97,110,100,116,101,97,99,104,101,114,115,60,104,\n101,97,100,62,10,9,97,102,102,101,99,116,101,100,115,117,112,112,111,114,116,115\n,112,111,105,110,116,101,114,59,116,111,83,116,114,105,110,103,60,47,115,109,97,\n108,108,62,111,107,108,97,104,111,109,97,119,105,108,108,32,98,101,32,105,110,\n118,101,115,116,111,114,48,34,32,97,108,116,61,34,104,111,108,105,100,97,121,115\n,82,101,115,111,117,114,99,101,108,105,99,101,110,115,101,100,32,40,119,104,105,\n99,104,32,46,32,65,102,116,101,114,32,99,111,110,115,105,100,101,114,118,105,115\n,105,116,105,110,103,101,120,112,108,111,114,101,114,112,114,105,109,97,114,121,\n32,115,101,97,114,99,104,34,32,97,110,100,114,111,105,100,34,113,117,105,99,107,\n108,121,32,109,101,101,116,105,110,103,115,101,115,116,105,109,97,116,101,59,114\n,101,116,117,114,110,32,59,99,111,108,111,114,58,35,32,104,101,105,103,104,116,\n61,97,112,112,114,111,118,97,108,44,32,38,113,117,111,116,59,32,99,104,101,99,\n107,101,100,46,109,105,110,46,106,115,34,109,97,103,110,101,116,105,99,62,60,47,\n97,62,60,47,104,102,111,114,101,99,97,115,116,46,32,87,104,105,108,101,32,116,\n104,117,114,115,100,97,121,100,118,101,114,116,105,115,101,38,101,97,99,117,116,\n101,59,104,97,115,67,108,97,115,115,101,118,97,108,117,97,116,101,111,114,100,\n101,114,105,110,103,101,120,105,115,116,105,110,103,112,97,116,105,101,110,116,\n115,32,79,110,108,105,110,101,32,99,111,108,111,114,97,100,111,79,112,116,105,\n111,110,115,34,99,97,109,112,98,101,108,108,60,33,45,45,32,101,110,100,60,47,115\n,112,97,110,62,60,60,98,114,32,47,62,13,10,95,112,111,112,117,112,115,124,115,99\n,105,101,110,99,101,115,44,38,113,117,111,116,59,32,113,117,97,108,105,116,121,\n32,87,105,110,100,111,119,115,32,97,115,115,105,103,110,101,100,104,101,105,103,\n104,116,58,32,60,98,32,99,108,97,115,115,108,101,38,113,117,111,116,59,32,118,97\n,108,117,101,61,34,32,67,111,109,112,97,110,121,101,120,97,109,112,108,101,115,\n60,105,102,114,97,109,101,32,98,101,108,105,101,118,101,115,112,114,101,115,101,\n110,116,115,109,97,114,115,104,97,108,108,112,97,114,116,32,111,102,32,112,114,\n111,112,101,114,108,121,41,46,10,10,84,104,101,32,116,97,120,111,110,111,109,121\n,109,117,99,104,32,111,102,32,60,47,115,112,97,110,62,10,34,32,100,97,116,97,45,\n115,114,116,117,103,117,195,170,115,115,99,114,111,108,108,84,111,32,112,114,111\n,106,101,99,116,60,104,101,97,100,62,13,10,97,116,116,111,114,110,101,121,101,\n109,112,104,97,115,105,115,115,112,111,110,115,111,114,115,102,97,110,99,121,98,\n111,120,119,111,114,108,100,39,115,32,119,105,108,100,108,105,102,101,99,104,101\n,99,107,101,100,61,115,101,115,115,105,111,110,115,112,114,111,103,114,97,109,\n109,112,120,59,102,111,110,116,45,32,80,114,111,106,101,99,116,106,111,117,114,\n110,97,108,115,98,101,108,105,101,118,101,100,118,97,99,97,116,105,111,110,116,\n104,111,109,112,115,111,110,108,105,103,104,116,105,110,103,97,110,100,32,116,\n104,101,32,115,112,101,99,105,97,108,32,98,111,114,100,101,114,61,48,99,104,101,\n99,107,105,110,103,60,47,116,98,111,100,121,62,60,98,117,116,116,111,110,32,67,\n111,109,112,108,101,116,101,99,108,101,97,114,102,105,120,10,60,104,101,97,100,\n62,10,97,114,116,105,99,108,101,32,60,115,101,99,116,105,111,110,102,105,110,100\n,105,110,103,115,114,111,108,101,32,105,110,32,112,111,112,117,108,97,114,32,32,\n79,99,116,111,98,101,114,119,101,98,115,105,116,101,32,101,120,112,111,115,117,\n114,101,117,115,101,100,32,116,111,32,32,99,104,97,110,103,101,115,111,112,101,\n114,97,116,101,100,99,108,105,99,107,105,110,103,101,110,116,101,114,105,110,103\n,99,111,109,109,97,110,100,115,105,110,102,111,114,109,101,100,32,110,117,109,98\n,101,114,115,32,32,60,47,100,105,118,62,99,114,101,97,116,105,110,103,111,110,83\n,117,98,109,105,116,109,97,114,121,108,97,110,100,99,111,108,108,101,103,101,115\n,97,110,97,108,121,116,105,99,108,105,115,116,105,110,103,115,99,111,110,116,97,\n99,116,46,108,111,103,103,101,100,73,110,97,100,118,105,115,111,114,121,115,105,\n98,108,105,110,103,115,99,111,110,116,101,110,116,34,115,38,113,117,111,116,59,\n41,115,46,32,84,104,105,115,32,112,97,99,107,97,103,101,115,99,104,101,99,107,98\n,111,120,115,117,103,103,101,115,116,115,112,114,101,103,110,97,110,116,116,111,\n109,111,114,114,111,119,115,112,97,99,105,110,103,61,105,99,111,110,46,112,110,\n103,106,97,112,97,110,101,115,101,99,111,100,101,98,97,115,101,98,117,116,116,\n111,110,34,62,103,97,109,98,108,105,110,103,115,117,99,104,32,97,115,32,44,32,\n119,104,105,108,101,32,60,47,115,112,97,110,62,32,109,105,115,115,111,117,114,\n105,115,112,111,114,116,105,110,103,116,111,112,58,49,112,120,32,46,60,47,115,\n112,97,110,62,116,101,110,115,105,111,110,115,119,105,100,116,104,61,34,50,108,\n97,122,121,108,111,97,100,110,111,118,101,109,98,101,114,117,115,101,100,32,105,\n110,32,104,101,105,103,104,116,61,34,99,114,105,112,116,34,62,10,38,110,98,115,\n112,59,60,47,60,116,114,62,60,116,100,32,104,101,105,103,104,116,58,50,47,112,\n114,111,100,117,99,116,99,111,117,110,116,114,121,32,105,110,99,108,117,100,101,\n32,102,111,111,116,101,114,34,32,38,108,116,59,33,45,45,32,116,105,116,108,101,\n34,62,60,47,106,113,117,101,114,121,46,60,47,102,111,114,109,62,10,40,231,174,\n128,228,189,147,41,40,231,185,129,233,171,148,41,104,114,118,97,116,115,107,105,\n105,116,97,108,105,97,110,111,114,111,109,195,162,110,196,131,116,195,188,114,\n107,195,167,101,216,167,216,177,216,175,217,136,116,97,109,98,105,195,169,110,\n110,111,116,105,99,105,97,115,109,101,110,115,97,106,101,115,112,101,114,115,111\n,110,97,115,100,101,114,101,99,104,111,115,110,97,99,105,111,110,97,108,115,101,\n114,118,105,99,105,111,99,111,110,116,97,99,116,111,117,115,117,97,114,105,111,\n115,112,114,111,103,114,97,109,97,103,111,98,105,101,114,110,111,101,109,112,114\n,101,115,97,115,97,110,117,110,99,105,111,115,118,97,108,101,110,99,105,97,99,\n111,108,111,109,98,105,97,100,101,115,112,117,195,169,115,100,101,112,111,114,\n116,101,115,112,114,111,121,101,99,116,111,112,114,111,100,117,99,116,111,112,\n195,186,98,108,105,99,111,110,111,115,111,116,114,111,115,104,105,115,116,111,\n114,105,97,112,114,101,115,101,110,116,101,109,105,108,108,111,110,101,115,109,\n101,100,105,97,110,116,101,112,114,101,103,117,110,116,97,97,110,116,101,114,105\n,111,114,114,101,99,117,114,115,111,115,112,114,111,98,108,101,109,97,115,97,110\n,116,105,97,103,111,110,117,101,115,116,114,111,115,111,112,105,110,105,195,179,\n110,105,109,112,114,105,109,105,114,109,105,101,110,116,114,97,115,97,109,195,\n169,114,105,99,97,118,101,110,100,101,100,111,114,115,111,99,105,101,100,97,100,\n114,101,115,112,101,99,116,111,114,101,97,108,105,122,97,114,114,101,103,105,115\n,116,114,111,112,97,108,97,98,114,97,115,105,110,116,101,114,195,169,115,101,110\n,116,111,110,99,101,115,101,115,112,101,99,105,97,108,109,105,101,109,98,114,111\n,115,114,101,97,108,105,100,97,100,99,195,179,114,100,111,98,97,122,97,114,97,\n103,111,122,97,112,195,161,103,105,110,97,115,115,111,99,105,97,108,101,115,98,\n108,111,113,117,101,97,114,103,101,115,116,105,195,179,110,97,108,113,117,105,\n108,101,114,115,105,115,116,101,109,97,115,99,105,101,110,99,105,97,115,99,111,\n109,112,108,101,116,111,118,101,114,115,105,195,179,110,99,111,109,112,108,101,\n116,97,101,115,116,117,100,105,111,115,112,195,186,98,108,105,99,97,111,98,106,\n101,116,105,118,111,97,108,105,99,97,110,116,101,98,117,115,99,97,100,111,114,99\n,97,110,116,105,100,97,100,101,110,116,114,97,100,97,115,97,99,99,105,111,110,\n101,115,97,114,99,104,105,118,111,115,115,117,112,101,114,105,111,114,109,97,121\n,111,114,195,173,97,97,108,101,109,97,110,105,97,102,117,110,99,105,195,179,110,\n195,186,108,116,105,109,111,115,104,97,99,105,101,110,100,111,97,113,117,101,108\n,108,111,115,101,100,105,99,105,195,179,110,102,101,114,110,97,110,100,111,97,\n109,98,105,101,110,116,101,102,97,99,101,98,111,111,107,110,117,101,115,116,114,\n97,115,99,108,105,101,110,116,101,115,112,114,111,99,101,115,111,115,98,97,115,\n116,97,110,116,101,112,114,101,115,101,110,116,97,114,101,112,111,114,116,97,114\n,99,111,110,103,114,101,115,111,112,117,98,108,105,99,97,114,99,111,109,101,114,\n99,105,111,99,111,110,116,114,97,116,111,106,195,179,118,101,110,101,115,100,105\n,115,116,114,105,116,111,116,195,169,99,110,105,99,97,99,111,110,106,117,110,116\n,111,101,110,101,114,103,195,173,97,116,114,97,98,97,106,97,114,97,115,116,117,\n114,105,97,115,114,101,99,105,101,110,116,101,117,116,105,108,105,122,97,114,98,\n111,108,101,116,195,173,110,115,97,108,118,97,100,111,114,99,111,114,114,101,99,\n116,97,116,114,97,98,97,106,111,115,112,114,105,109,101,114,111,115,110,101,103,\n111,99,105,111,115,108,105,98,101,114,116,97,100,100,101,116,97,108,108,101,115,\n112,97,110,116,97,108,108,97,112,114,195,179,120,105,109,111,97,108,109,101,114,\n195,173,97,97,110,105,109,97,108,101,115,113,117,105,195,169,110,101,115,99,111,\n114,97,122,195,179,110,115,101,99,99,105,195,179,110,98,117,115,99,97,110,100,\n111,111,112,99,105,111,110,101,115,101,120,116,101,114,105,111,114,99,111,110,99\n,101,112,116,111,116,111,100,97,118,195,173,97,103,97,108,101,114,195,173,97,101\n,115,99,114,105,98,105,114,109,101,100,105,99,105,110,97,108,105,99,101,110,99,\n105,97,99,111,110,115,117,108,116,97,97,115,112,101,99,116,111,115,99,114,195,\n173,116,105,99,97,100,195,179,108,97,114,101,115,106,117,115,116,105,99,105,97,\n100,101,98,101,114,195,161,110,112,101,114,195,173,111,100,111,110,101,99,101,\n115,105,116,97,109,97,110,116,101,110,101,114,112,101,113,117,101,195,177,111,\n114,101,99,105,98,105,100,97,116,114,105,98,117,110,97,108,116,101,110,101,114,\n105,102,101,99,97,110,99,105,195,179,110,99,97,110,97,114,105,97,115,100,101,115\n,99,97,114,103,97,100,105,118,101,114,115,111,115,109,97,108,108,111,114,99,97,\n114,101,113,117,105,101,114,101,116,195,169,99,110,105,99,111,100,101,98,101,114\n,195,173,97,118,105,118,105,101,110,100,97,102,105,110,97,110,122,97,115,97,100,\n101,108,97,110,116,101,102,117,110,99,105,111,110,97,99,111,110,115,101,106,111,\n115,100,105,102,195,173,99,105,108,99,105,117,100,97,100,101,115,97,110,116,105,\n103,117,97,115,97,118,97,110,122,97,100,97,116,195,169,114,109,105,110,111,117,\n110,105,100,97,100,101,115,115,195,161,110,99,104,101,122,99,97,109,112,97,195,\n177,97,115,111,102,116,111,110,105,99,114,101,118,105,115,116,97,115,99,111,110,\n116,105,101,110,101,115,101,99,116,111,114,101,115,109,111,109,101,110,116,111,\n115,102,97,99,117,108,116,97,100,99,114,195,169,100,105,116,111,100,105,118,101,\n114,115,97,115,115,117,112,117,101,115,116,111,102,97,99,116,111,114,101,115,115\n,101,103,117,110,100,111,115,112,101,113,117,101,195,177,97,208,179,208,190,208,\n180,208,176,208,181,209,129,208,187,208,184,208,181,209,129,209,130,209,140,208,\n177,209,139,208,187,208,190,208,177,209,139,209,130,209,140,209,141,209,130,208,\n190,208,188,208,149,209,129,208,187,208,184,209,130,208,190,208,179,208,190,208,\n188,208,181,208,189,209,143,208,178,209,129,208,181,209,133,209,141,209,130,208,\n190,208,185,208,180,208,176,208,182,208,181,208,177,209,139,208,187,208,184,208,\n179,208,190,208,180,209,131,208,180,208,181,208,189,209,140,209,141,209,130,208,\n190,209,130,208,177,209,139,208,187,208,176,209,129,208,181,208,177,209,143,208,\n190,208,180,208,184,208,189,209,129,208,181,208,177,208,181,208,189,208,176,208,\n180,208,190,209,129,208,176,208,185,209,130,209,132,208,190,209,130,208,190,208,\n189,208,181,208,179,208,190,209,129,208,178,208,190,208,184,209,129,208,178,208,\n190,208,185,208,184,208,179,209,128,209,139,209,130,208,190,208,182,208,181,208,\n178,209,129,208,181,208,188,209,129,208,178,208,190,209,142,208,187,208,184,209,\n136,209,140,209,141,209,130,208,184,209,133,208,191,208,190,208,186,208,176,208,\n180,208,189,208,181,208,185,208,180,208,190,208,188,208,176,208,188,208,184,209,\n128,208,176,208,187,208,184,208,177,208,190,209,130,208,181,208,188,209,131,209,\n133,208,190,209,130,209,143,208,180,208,178,209,131,209,133,209,129,208,181,209,\n130,208,184,208,187,209,142,208,180,208,184,208,180,208,181,208,187,208,190,208,\n188,208,184,209,128,208,181,209,130,208,181,208,177,209,143,209,129,208,178,208,\n190,208,181,208,178,208,184,208,180,208,181,209,135,208,181,208,179,208,190,209,\n141,209,130,208,184,208,188,209,129,209,135,208,181,209,130,209,130,208,181,208,\n188,209,139,209,134,208,181,208,189,209,139,209,129,209,130,208,176,208,187,208,\n178,208,181,208,180,209,140,209,130,208,181,208,188,208,181,208,178,208,190,208,\n180,209,139,209,130,208,181,208,177,208,181,208,178,209,139,209,136,208,181,208,\n189,208,176,208,188,208,184,209,130,208,184,208,191,208,176,209,130,208,190,208,\n188,209,131,208,191,209,128,208,176,208,178,208,187,208,184,209,134,208,176,208,\n190,208,180,208,189,208,176,208,179,208,190,208,180,209,139,208,183,208,189,208,\n176,209,142,208,188,208,190,208,179,209,131,208,180,209,128,209,131,208,179,208,\n178,209,129,208,181,208,185,208,184,208,180,208,181,209,130,208,186,208,184,208,\n189,208,190,208,190,208,180,208,189,208,190,208,180,208,181,208,187,208,176,208,\n180,208,181,208,187,208,181,209,129,209,128,208,190,208,186,208,184,209,142,208,\n189,209,143,208,178,208,181,209,129,209,140,208,149,209,129,209,130,209,140,209,\n128,208,176,208,183,208,176,208,189,208,176,209,136,208,184,216,167,217,132,217,\n132,217,135,216,167,217,132,216,170,217,138,216,172,217,133,217,138,216,185,216,\n174,216,167,216,181,216,169,216,167,217,132,216,176,217,138,216,185,217,132,217,\n138,217,135,216,172,216,175,217,138,216,175,216,167,217,132,216,162,217,134,216,\n167,217,132,216,177,216,175,216,170,216,173,217,131,217,133,216,181,217,129,216,\n173,216,169,217,131,216,167,217,134,216,170,216,167,217,132,217,132,217,138,217,\n138,217,131,217,136,217,134,216,180,216,168,217,131,216,169,217,129,217,138,217,\n135,216,167,216,168,217,134,216,167,216,170,216,173,217,136,216,167,216,161,216,\n163,217,131,216,171,216,177,216,174,217,132,216,167,217,132,216,167,217,132,216,\n173,216,168,216,175,217,132,217,138,217,132,216,175,216,177,217,136,216,179,216,\n167,216,182,216,186,216,183,216,170,217,131,217,136,217,134,217,135,217,134,216,\n167,217,131,216,179,216,167,216,173,216,169,217,134,216,167,216,175,217,138,216,\n167,217,132,216,183,216,168,216,185,217,132,217,138,217,131,216,180,217,131,216,\n177,216,167,217,138,217,133,217,131,217,134,217,133,217,134,217,135,216,167,216,\n180,216,177,217,131,216,169,216,177,216,166,217,138,216,179,217,134,216,180,217,\n138,216,183,217,133,216,167,216,176,216,167,216,167,217,132,217,129,217,134,216,\n180,216,168,216,167,216,168,216,170,216,185,216,168,216,177,216,177,216,173,217,\n133,216,169,217,131,216,167,217,129,216,169,217,138,217,130,217,136,217,132,217,\n133,216,177,217,131,216,178,217,131,217,132,217,133,216,169,216,163,216,173,217,\n133,216,175,217,130,217,132,216,168,217,138,217,138,216,185,217,134,217,138,216,\n181,217,136,216,177,216,169,216,183,216,177,217,138,217,130,216,180,216,167,216,\n177,217,131,216,172,217,136,216,167,217,132,216,163,216,174,216,177,217,137,217,\n133,216,185,217,134,216,167,216,167,216,168,216,173,216,171,216,185,216,177,217,\n136,216,182,216,168,216,180,217,131,217,132,217,133,216,179,216,172,217,132,216,\n168,217,134,216,167,217,134,216,174,216,167,217,132,216,175,217,131,216,170,216,\n167,216,168,217,131,217,132,217,138,216,169,216,168,216,175,217,136,217,134,216,\n163,217,138,216,182,216,167,217,138,217,136,216,172,216,175,217,129,216,177,217,\n138,217,130,217,131,216,170,216,168,216,170,216,163,217,129,216,182,217,132,217,\n133,216,183,216,168,216,174,216,167,217,131,216,171,216,177,216,168,216,167,216,\n177,217,131,216,167,217,129,216,182,217,132,216,167,216,173,217,132,217,137,217,\n134,217,129,216,179,217,135,216,163,217,138,216,167,217,133,216,177,216,175,217,\n136,216,175,216,163,217,134,217,135,216,167,216,175,217,138,217,134,216,167,216,\n167,217,132,216,167,217,134,217,133,216,185,216,177,216,182,216,170,216,185,217,\n132,217,133,216,175,216,167,216,174,217,132,217,133,217,133,217,131,217,134,0,0,\n0,0,0,0,0,0,1,0,1,0,1,0,1,0,2,0,2,0,2,0,2,0,4,0,4,0,4,0,4,0,0,1,2,3,4,5,6,7,7,6,\n5,4,3,2,1,0,8,9,10,11,12,13,14,15,15,14,13,12,11,10,9,8,16,17,18,19,20,21,22,23,\n23,22,21,20,19,18,17,16,24,25,26,27,28,29,30,31,31,30,29,28,27,26,25,24,255,255,\n255,255,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,2,0,0,0,2,0,0,0,1,0,0,0,1,0,0,0,\n3,0,0,0,255,255,0,1,0,0,0,1,0,0,255,255,0,1,0,0,0,8,0,8,0,8,0,8,0,0,0,1,0,2,0,3,\n0,4,0,5,0,6,0,7,114,101,115,111,117,114,99,101,115,99,111,117,110,116,114,105,\n101,115,113,117,101,115,116,105,111,110,115,101,113,117,105,112,109,101,110,116,\n99,111,109,109,117,110,105,116,121,97,118,97,105,108,97,98,108,101,104,105,103,\n104,108,105,103,104,116,68,84,68,47,120,104,116,109,108,109,97,114,107,101,116,\n105,110,103,107,110,111,119,108,101,100,103,101,115,111,109,101,116,104,105,110,\n103,99,111,110,116,97,105,110,101,114,100,105,114,101,99,116,105,111,110,115,117\n,98,115,99,114,105,98,101,97,100,118,101,114,116,105,115,101,99,104,97,114,97,99\n,116,101,114,34,32,118,97,108,117,101,61,34,60,47,115,101,108,101,99,116,62,65,\n117,115,116,114,97,108,105,97,34,32,99,108,97,115,115,61,34,115,105,116,117,97,\n116,105,111,110,97,117,116,104,111,114,105,116,121,102,111,108,108,111,119,105,\n110,103,112,114,105,109,97,114,105,108,121,111,112,101,114,97,116,105,111,110,99\n,104,97,108,108,101,110,103,101,100,101,118,101,108,111,112,101,100,97,110,111,\n110,121,109,111,117,115,102,117,110,99,116,105,111,110,32,102,117,110,99,116,105\n,111,110,115,99,111,109,112,97,110,105,101,115,115,116,114,117,99,116,117,114,\n101,97,103,114,101,101,109,101,110,116,34,32,116,105,116,108,101,61,34,112,111,\n116,101,110,116,105,97,108,101,100,117,99,97,116,105,111,110,97,114,103,117,109,\n101,110,116,115,115,101,99,111,110,100,97,114,121,99,111,112,121,114,105,103,104\n,116,108,97,110,103,117,97,103,101,115,101,120,99,108,117,115,105,118,101,99,111\n,110,100,105,116,105,111,110,60,47,102,111,114,109,62,13,10,115,116,97,116,101,\n109,101,110,116,97,116,116,101,110,116,105,111,110,66,105,111,103,114,97,112,104\n,121,125,32,101,108,115,101,32,123,10,115,111,108,117,116,105,111,110,115,119,\n104,101,110,32,116,104,101,32,65,110,97,108,121,116,105,99,115,116,101,109,112,\n108,97,116,101,115,100,97,110,103,101,114,111,117,115,115,97,116,101,108,108,105\n,116,101,100,111,99,117,109,101,110,116,115,112,117,98,108,105,115,104,101,114,\n105,109,112,111,114,116,97,110,116,112,114,111,116,111,116,121,112,101,105,110,\n102,108,117,101,110,99,101,38,114,97,113,117,111,59,60,47,101,102,102,101,99,116\n,105,118,101,103,101,110,101,114,97,108,108,121,116,114,97,110,115,102,111,114,\n109,98,101,97,117,116,105,102,117,108,116,114,97,110,115,112,111,114,116,111,114\n,103,97,110,105,122,101,100,112,117,98,108,105,115,104,101,100,112,114,111,109,\n105,110,101,110,116,117,110,116,105,108,32,116,104,101,116,104,117,109,98,110,97\n,105,108,78,97,116,105,111,110,97,108,32,46,102,111,99,117,115,40,41,59,111,118,\n101,114,32,116,104,101,32,109,105,103,114,97,116,105,111,110,97,110,110,111,117,\n110,99,101,100,102,111,111,116,101,114,34,62,10,101,120,99,101,112,116,105,111,\n110,108,101,115,115,32,116,104,97,110,101,120,112,101,110,115,105,118,101,102,\n111,114,109,97,116,105,111,110,102,114,97,109,101,119,111,114,107,116,101,114,\n114,105,116,111,114,121,110,100,105,99,97,116,105,111,110,99,117,114,114,101,110\n,116,108,121,99,108,97,115,115,78,97,109,101,99,114,105,116,105,99,105,115,109,\n116,114,97,100,105,116,105,111,110,101,108,115,101,119,104,101,114,101,65,108,\n101,120,97,110,100,101,114,97,112,112,111,105,110,116,101,100,109,97,116,101,114\n,105,97,108,115,98,114,111,97,100,99,97,115,116,109,101,110,116,105,111,110,101,\n100,97,102,102,105,108,105,97,116,101,60,47,111,112,116,105,111,110,62,116,114,\n101,97,116,109,101,110,116,100,105,102,102,101,114,101,110,116,47,100,101,102,97\n,117,108,116,46,80,114,101,115,105,100,101,110,116,111,110,99,108,105,99,107,61,\n34,98,105,111,103,114,97,112,104,121,111,116,104,101,114,119,105,115,101,112,101\n,114,109,97,110,101,110,116,70,114,97,110,195,167,97,105,115,72,111,108,108,121,\n119,111,111,100,101,120,112,97,110,115,105,111,110,115,116,97,110,100,97,114,100\n,115,60,47,115,116,121,108,101,62,10,114,101,100,117,99,116,105,111,110,68,101,\n99,101,109,98,101,114,32,112,114,101,102,101,114,114,101,100,67,97,109,98,114,\n105,100,103,101,111,112,112,111,110,101,110,116,115,66,117,115,105,110,101,115,\n115,32,99,111,110,102,117,115,105,111,110,62,10,60,116,105,116,108,101,62,112,\n114,101,115,101,110,116,101,100,101,120,112,108,97,105,110,101,100,100,111,101,\n115,32,110,111,116,32,119,111,114,108,100,119,105,100,101,105,110,116,101,114,\n102,97,99,101,112,111,115,105,116,105,111,110,115,110,101,119,115,112,97,112,101\n,114,60,47,116,97,98,108,101,62,10,109,111,117,110,116,97,105,110,115,108,105,\n107,101,32,116,104,101,32,101,115,115,101,110,116,105,97,108,102,105,110,97,110,\n99,105,97,108,115,101,108,101,99,116,105,111,110,97,99,116,105,111,110,61,34,47,\n97,98,97,110,100,111,110,101,100,69,100,117,99,97,116,105,111,110,112,97,114,115\n,101,73,110,116,40,115,116,97,98,105,108,105,116,121,117,110,97,98,108,101,32,\n116,111,60,47,116,105,116,108,101,62,10,114,101,108,97,116,105,111,110,115,78,\n111,116,101,32,116,104,97,116,101,102,102,105,99,105,101,110,116,112,101,114,102\n,111,114,109,101,100,116,119,111,32,121,101,97,114,115,83,105,110,99,101,32,116,\n104,101,116,104,101,114,101,102,111,114,101,119,114,97,112,112,101,114,34,62,97,\n108,116,101,114,110,97,116,101,105,110,99,114,101,97,115,101,100,66,97,116,116,\n108,101,32,111,102,112,101,114,99,101,105,118,101,100,116,114,121,105,110,103,32\n,116,111,110,101,99,101,115,115,97,114,121,112,111,114,116,114,97,121,101,100,\n101,108,101,99,116,105,111,110,115,69,108,105,122,97,98,101,116,104,60,47,105,\n102,114,97,109,101,62,100,105,115,99,111,118,101,114,121,105,110,115,117,114,97,\n110,99,101,115,46,108,101,110,103,116,104,59,108,101,103,101,110,100,97,114,121,\n71,101,111,103,114,97,112,104,121,99,97,110,100,105,100,97,116,101,99,111,114,\n112,111,114,97,116,101,115,111,109,101,116,105,109,101,115,115,101,114,118,105,\n99,101,115,46,105,110,104,101,114,105,116,101,100,60,47,115,116,114,111,110,103,\n62,67,111,109,109,117,110,105,116,121,114,101,108,105,103,105,111,117,115,108,\n111,99,97,116,105,111,110,115,67,111,109,109,105,116,116,101,101,98,117,105,108,\n100,105,110,103,115,116,104,101,32,119,111,114,108,100,110,111,32,108,111,110,\n103,101,114,98,101,103,105,110,110,105,110,103,114,101,102,101,114,101,110,99,\n101,99,97,110,110,111,116,32,98,101,102,114,101,113,117,101,110,99,121,116,121,\n112,105,99,97,108,108,121,105,110,116,111,32,116,104,101,32,114,101,108,97,116,\n105,118,101,59,114,101,99,111,114,100,105,110,103,112,114,101,115,105,100,101,\n110,116,105,110,105,116,105,97,108,108,121,116,101,99,104,110,105,113,117,101,\n116,104,101,32,111,116,104,101,114,105,116,32,99,97,110,32,98,101,101,120,105,\n115,116,101,110,99,101,117,110,100,101,114,108,105,110,101,116,104,105,115,32,\n116,105,109,101,116,101,108,101,112,104,111,110,101,105,116,101,109,115,99,111,\n112,101,112,114,97,99,116,105,99,101,115,97,100,118,97,110,116,97,103,101,41,59,\n114,101,116,117,114,110,32,70,111,114,32,111,116,104,101,114,112,114,111,118,105\n,100,105,110,103,100,101,109,111,99,114,97,99,121,98,111,116,104,32,116,104,101,\n32,101,120,116,101,110,115,105,118,101,115,117,102,102,101,114,105,110,103,115,\n117,112,112,111,114,116,101,100,99,111,109,112,117,116,101,114,115,32,102,117,\n110,99,116,105,111,110,112,114,97,99,116,105,99,97,108,115,97,105,100,32,116,104\n,97,116,105,116,32,109,97,121,32,98,101,69,110,103,108,105,115,104,60,47,102,114\n,111,109,32,116,104,101,32,115,99,104,101,100,117,108,101,100,100,111,119,110,\n108,111,97,100,115,60,47,108,97,98,101,108,62,10,115,117,115,112,101,99,116,101,\n100,109,97,114,103,105,110,58,32,48,115,112,105,114,105,116,117,97,108,60,47,104\n,101,97,100,62,10,10,109,105,99,114,111,115,111,102,116,103,114,97,100,117,97,\n108,108,121,100,105,115,99,117,115,115,101,100,104,101,32,98,101,99,97,109,101,\n101,120,101,99,117,116,105,118,101,106,113,117,101,114,121,46,106,115,104,111,\n117,115,101,104,111,108,100,99,111,110,102,105,114,109,101,100,112,117,114,99,\n104,97,115,101,100,108,105,116,101,114,97,108,108,121,100,101,115,116,114,111,\n121,101,100,117,112,32,116,111,32,116,104,101,118,97,114,105,97,116,105,111,110,\n114,101,109,97,105,110,105,110,103,105,116,32,105,115,32,110,111,116,99,101,110,\n116,117,114,105,101,115,74,97,112,97,110,101,115,101,32,97,109,111,110,103,32,\n116,104,101,99,111,109,112,108,101,116,101,100,97,108,103,111,114,105,116,104,\n109,105,110,116,101,114,101,115,116,115,114,101,98,101,108,108,105,111,110,117,\n110,100,101,102,105,110,101,100,101,110,99,111,117,114,97,103,101,114,101,115,\n105,122,97,98,108,101,105,110,118,111,108,118,105,110,103,115,101,110,115,105,\n116,105,118,101,117,110,105,118,101,114,115,97,108,112,114,111,118,105,115,105,\n111,110,40,97,108,116,104,111,117,103,104,102,101,97,116,117,114,105,110,103,99,\n111,110,100,117,99,116,101,100,41,44,32,119,104,105,99,104,32,99,111,110,116,105\n,110,117,101,100,45,104,101,97,100,101,114,34,62,70,101,98,114,117,97,114,121,32\n,110,117,109,101,114,111,117,115,32,111,118,101,114,102,108,111,119,58,99,111,\n109,112,111,110,101,110,116,102,114,97,103,109,101,110,116,115,101,120,99,101,\n108,108,101,110,116,99,111,108,115,112,97,110,61,34,116,101,99,104,110,105,99,97\n,108,110,101,97,114,32,116,104,101,32,65,100,118,97,110,99,101,100,32,115,111,\n117,114,99,101,32,111,102,101,120,112,114,101,115,115,101,100,72,111,110,103,32,\n75,111,110,103,32,70,97,99,101,98,111,111,107,109,117,108,116,105,112,108,101,32\n,109,101,99,104,97,110,105,115,109,101,108,101,118,97,116,105,111,110,111,102,\n102,101,110,115,105,118,101,60,47,102,111,114,109,62,10,9,115,112,111,110,115,\n111,114,101,100,100,111,99,117,109,101,110,116,46,111,114,32,38,113,117,111,116,\n59,116,104,101,114,101,32,97,114,101,116,104,111,115,101,32,119,104,111,109,111,\n118,101,109,101,110,116,115,112,114,111,99,101,115,115,101,115,100,105,102,102,\n105,99,117,108,116,115,117,98,109,105,116,116,101,100,114,101,99,111,109,109,101\n,110,100,99,111,110,118,105,110,99,101,100,112,114,111,109,111,116,105,110,103,\n34,32,119,105,100,116,104,61,34,46,114,101,112,108,97,99,101,40,99,108,97,115,\n115,105,99,97,108,99,111,97,108,105,116,105,111,110,104,105,115,32,102,105,114,\n115,116,100,101,99,105,115,105,111,110,115,97,115,115,105,115,116,97,110,116,105\n,110,100,105,99,97,116,101,100,101,118,111,108,117,116,105,111,110,45,119,114,97\n,112,112,101,114,34,101,110,111,117,103,104,32,116,111,97,108,111,110,103,32,116\n,104,101,100,101,108,105,118,101,114,101,100,45,45,62,13,10,60,33,45,45,65,109,\n101,114,105,99,97,110,32,112,114,111,116,101,99,116,101,100,78,111,118,101,109,\n98,101,114,32,60,47,115,116,121,108,101,62,60,102,117,114,110,105,116,117,114,\n101,73,110,116,101,114,110,101,116,32,32,111,110,98,108,117,114,61,34,115,117,\n115,112,101,110,100,101,100,114,101,99,105,112,105,101,110,116,98,97,115,101,100\n,32,111,110,32,77,111,114,101,111,118,101,114,44,97,98,111,108,105,115,104,101,\n100,99,111,108,108,101,99,116,101,100,119,101,114,101,32,109,97,100,101,101,109,\n111,116,105,111,110,97,108,101,109,101,114,103,101,110,99,121,110,97,114,114,97,\n116,105,118,101,97,100,118,111,99,97,116,101,115,112,120,59,98,111,114,100,101,\n114,99,111,109,109,105,116,116,101,100,100,105,114,61,34,108,116,114,34,101,109,\n112,108,111,121,101,101,115,114,101,115,101,97,114,99,104,46,32,115,101,108,101,\n99,116,101,100,115,117,99,99,101,115,115,111,114,99,117,115,116,111,109,101,114,\n115,100,105,115,112,108,97,121,101,100,83,101,112,116,101,109,98,101,114,97,100,\n100,67,108,97,115,115,40,70,97,99,101,98,111,111,107,32,115,117,103,103,101,115,\n116,101,100,97,110,100,32,108,97,116,101,114,111,112,101,114,97,116,105,110,103,\n101,108,97,98,111,114,97,116,101,83,111,109,101,116,105,109,101,115,73,110,115,\n116,105,116,117,116,101,99,101,114,116,97,105,110,108,121,105,110,115,116,97,108\n,108,101,100,102,111,108,108,111,119,101,114,115,74,101,114,117,115,97,108,101,\n109,116,104,101,121,32,104,97,118,101,99,111,109,112,117,116,105,110,103,103,101\n,110,101,114,97,116,101,100,112,114,111,118,105,110,99,101,115,103,117,97,114,97\n,110,116,101,101,97,114,98,105,116,114,97,114,121,114,101,99,111,103,110,105,122\n,101,119,97,110,116,101,100,32,116,111,112,120,59,119,105,100,116,104,58,116,104\n,101,111,114,121,32,111,102,98,101,104,97,118,105,111,117,114,87,104,105,108,101\n,32,116,104,101,101,115,116,105,109,97,116,101,100,98,101,103,97,110,32,116,111,\n32,105,116,32,98,101,99,97,109,101,109,97,103,110,105,116,117,100,101,109,117,\n115,116,32,104,97,118,101,109,111,114,101,32,116,104,97,110,68,105,114,101,99,\n116,111,114,121,101,120,116,101,110,115,105,111,110,115,101,99,114,101,116,97,\n114,121,110,97,116,117,114,97,108,108,121,111,99,99,117,114,114,105,110,103,118,\n97,114,105,97,98,108,101,115,103,105,118,101,110,32,116,104,101,112,108,97,116,\n102,111,114,109,46,60,47,108,97,98,101,108,62,60,102,97,105,108,101,100,32,116,\n111,99,111,109,112,111,117,110,100,115,107,105,110,100,115,32,111,102,32,115,111\n,99,105,101,116,105,101,115,97,108,111,110,103,115,105,100,101,32,45,45,38,103,\n116,59,10,10,115,111,117,116,104,119,101,115,116,116,104,101,32,114,105,103,104,\n116,114,97,100,105,97,116,105,111,110,109,97,121,32,104,97,118,101,32,117,110,\n101,115,99,97,112,101,40,115,112,111,107,101,110,32,105,110,34,32,104,114,101,\n102,61,34,47,112,114,111,103,114,97,109,109,101,111,110,108,121,32,116,104,101,\n32,99,111,109,101,32,102,114,111,109,100,105,114,101,99,116,111,114,121,98,117,\n114,105,101,100,32,105,110,97,32,115,105,109,105,108,97,114,116,104,101,121,32,\n119,101,114,101,60,47,102,111,110,116,62,60,47,78,111,114,119,101,103,105,97,110\n,115,112,101,99,105,102,105,101,100,112,114,111,100,117,99,105,110,103,112,97,\n115,115,101,110,103,101,114,40,110,101,119,32,68,97,116,101,116,101,109,112,111,\n114,97,114,121,102,105,99,116,105,111,110,97,108,65,102,116,101,114,32,116,104,\n101,101,113,117,97,116,105,111,110,115,100,111,119,110,108,111,97,100,46,114,101\n,103,117,108,97,114,108,121,100,101,118,101,108,111,112,101,114,97,98,111,118,\n101,32,116,104,101,108,105,110,107,101,100,32,116,111,112,104,101,110,111,109,\n101,110,97,112,101,114,105,111,100,32,111,102,116,111,111,108,116,105,112,34,62,\n115,117,98,115,116,97,110,99,101,97,117,116,111,109,97,116,105,99,97,115,112,101\n,99,116,32,111,102,65,109,111,110,103,32,116,104,101,99,111,110,110,101,99,116,\n101,100,101,115,116,105,109,97,116,101,115,65,105,114,32,70,111,114,99,101,115,\n121,115,116,101,109,32,111,102,111,98,106,101,99,116,105,118,101,105,109,109,101\n,100,105,97,116,101,109,97,107,105,110,103,32,105,116,112,97,105,110,116,105,110\n,103,115,99,111,110,113,117,101,114,101,100,97,114,101,32,115,116,105,108,108,\n112,114,111,99,101,100,117,114,101,103,114,111,119,116,104,32,111,102,104,101,97\n,100,101,100,32,98,121,69,117,114,111,112,101,97,110,32,100,105,118,105,115,105,\n111,110,115,109,111,108,101,99,117,108,101,115,102,114,97,110,99,104,105,115,101\n,105,110,116,101,110,116,105,111,110,97,116,116,114,97,99,116,101,100,99,104,105\n,108,100,104,111,111,100,97,108,115,111,32,117,115,101,100,100,101,100,105,99,97\n,116,101,100,115,105,110,103,97,112,111,114,101,100,101,103,114,101,101,32,111,\n102,102,97,116,104,101,114,32,111,102,99,111,110,102,108,105,99,116,115,60,47,97\n,62,60,47,112,62,10,99,97,109,101,32,102,114,111,109,119,101,114,101,32,117,115,\n101,100,110,111,116,101,32,116,104,97,116,114,101,99,101,105,118,105,110,103,69,\n120,101,99,117,116,105,118,101,101,118,101,110,32,109,111,114,101,97,99,99,101,\n115,115,32,116,111,99,111,109,109,97,110,100,101,114,80,111,108,105,116,105,99,\n97,108,109,117,115,105,99,105,97,110,115,100,101,108,105,99,105,111,117,115,112,\n114,105,115,111,110,101,114,115,97,100,118,101,110,116,32,111,102,85,84,70,45,56\n,34,32,47,62,60,33,91,67,68,65,84,65,91,34,62,67,111,110,116,97,99,116,83,111,\n117,116,104,101,114,110,32,98,103,99,111,108,111,114,61,34,115,101,114,105,101,\n115,32,111,102,46,32,73,116,32,119,97,115,32,105,110,32,69,117,114,111,112,101,\n112,101,114,109,105,116,116,101,100,118,97,108,105,100,97,116,101,46,97,112,112,\n101,97,114,105,110,103,111,102,102,105,99,105,97,108,115,115,101,114,105,111,117\n,115,108,121,45,108,97,110,103,117,97,103,101,105,110,105,116,105,97,116,101,100\n,101,120,116,101,110,100,105,110,103,108,111,110,103,45,116,101,114,109,105,110,\n102,108,97,116,105,111,110,115,117,99,104,32,116,104,97,116,103,101,116,67,111,\n111,107,105,101,109,97,114,107,101,100,32,98,121,60,47,98,117,116,116,111,110,62\n,105,109,112,108,101,109,101,110,116,98,117,116,32,105,116,32,105,115,105,110,99\n,114,101,97,115,101,115,100,111,119,110,32,116,104,101,32,114,101,113,117,105,\n114,105,110,103,100,101,112,101,110,100,101,110,116,45,45,62,10,60,33,45,45,32,\n105,110,116,101,114,118,105,101,119,87,105,116,104,32,116,104,101,32,99,111,112,\n105,101,115,32,111,102,99,111,110,115,101,110,115,117,115,119,97,115,32,98,117,\n105,108,116,86,101,110,101,122,117,101,108,97,40,102,111,114,109,101,114,108,121\n,116,104,101,32,115,116,97,116,101,112,101,114,115,111,110,110,101,108,115,116,\n114,97,116,101,103,105,99,102,97,118,111,117,114,32,111,102,105,110,118,101,110,\n116,105,111,110,87,105,107,105,112,101,100,105,97,99,111,110,116,105,110,101,110\n,116,118,105,114,116,117,97,108,108,121,119,104,105,99,104,32,119,97,115,112,114\n,105,110,99,105,112,108,101,67,111,109,112,108,101,116,101,32,105,100,101,110,\n116,105,99,97,108,115,104,111,119,32,116,104,97,116,112,114,105,109,105,116,105,\n118,101,97,119,97,121,32,102,114,111,109,109,111,108,101,99,117,108,97,114,112,\n114,101,99,105,115,101,108,121,100,105,115,115,111,108,118,101,100,85,110,100,\n101,114,32,116,104,101,118,101,114,115,105,111,110,61,34,62,38,110,98,115,112,59\n,60,47,73,116,32,105,115,32,116,104,101,32,84,104,105,115,32,105,115,32,119,105,\n108,108,32,104,97,118,101,111,114,103,97,110,105,115,109,115,115,111,109,101,32,\n116,105,109,101,70,114,105,101,100,114,105,99,104,119,97,115,32,102,105,114,115,\n116,116,104,101,32,111,110,108,121,32,102,97,99,116,32,116,104,97,116,102,111,\n114,109,32,105,100,61,34,112,114,101,99,101,100,105,110,103,84,101,99,104,110,\n105,99,97,108,112,104,121,115,105,99,105,115,116,111,99,99,117,114,115,32,105,\n110,110,97,118,105,103,97,116,111,114,115,101,99,116,105,111,110,34,62,115,112,\n97,110,32,105,100,61,34,115,111,117,103,104,116,32,116,111,98,101,108,111,119,32\n,116,104,101,115,117,114,118,105,118,105,110,103,125,60,47,115,116,121,108,101,\n62,104,105,115,32,100,101,97,116,104,97,115,32,105,110,32,116,104,101,99,97,117,\n115,101,100,32,98,121,112,97,114,116,105,97,108,108,121,101,120,105,115,116,105,\n110,103,32,117,115,105,110,103,32,116,104,101,119,97,115,32,103,105,118,101,110,\n97,32,108,105,115,116,32,111,102,108,101,118,101,108,115,32,111,102,110,111,116,\n105,111,110,32,111,102,79,102,102,105,99,105,97,108,32,100,105,115,109,105,115,\n115,101,100,115,99,105,101,110,116,105,115,116,114,101,115,101,109,98,108,101,\n115,100,117,112,108,105,99,97,116,101,101,120,112,108,111,115,105,118,101,114,\n101,99,111,118,101,114,101,100,97,108,108,32,111,116,104,101,114,103,97,108,108,\n101,114,105,101,115,123,112,97,100,100,105,110,103,58,112,101,111,112,108,101,32\n,111,102,114,101,103,105,111,110,32,111,102,97,100,100,114,101,115,115,101,115,\n97,115,115,111,99,105,97,116,101,105,109,103,32,97,108,116,61,34,105,110,32,109,\n111,100,101,114,110,115,104,111,117,108,100,32,98,101,109,101,116,104,111,100,32\n,111,102,114,101,112,111,114,116,105,110,103,116,105,109,101,115,116,97,109,112,\n110,101,101,100,101,100,32,116,111,116,104,101,32,71,114,101,97,116,114,101,103,\n97,114,100,105,110,103,115,101,101,109,101,100,32,116,111,118,105,101,119,101,\n100,32,97,115,105,109,112,97,99,116,32,111,110,105,100,101,97,32,116,104,97,116,\n116,104,101,32,87,111,114,108,100,104,101,105,103,104,116,32,111,102,101,120,112\n,97,110,100,105,110,103,84,104,101,115,101,32,97,114,101,99,117,114,114,101,110,\n116,34,62,99,97,114,101,102,117,108,108,121,109,97,105,110,116,97,105,110,115,99\n,104,97,114,103,101,32,111,102,67,108,97,115,115,105,99,97,108,97,100,100,114,\n101,115,115,101,100,112,114,101,100,105,99,116,101,100,111,119,110,101,114,115,\n104,105,112,60,100,105,118,32,105,100,61,34,114,105,103,104,116,34,62,13,10,114,\n101,115,105,100,101,110,99,101,108,101,97,118,101,32,116,104,101,99,111,110,116,\n101,110,116,34,62,97,114,101,32,111,102,116,101,110,32,32,125,41,40,41,59,13,10,\n112,114,111,98,97,98,108,121,32,80,114,111,102,101,115,115,111,114,45,98,117,116\n,116,111,110,34,32,114,101,115,112,111,110,100,101,100,115,97,121,115,32,116,104\n,97,116,104,97,100,32,116,111,32,98,101,112,108,97,99,101,100,32,105,110,72,117,\n110,103,97,114,105,97,110,115,116,97,116,117,115,32,111,102,115,101,114,118,101,\n115,32,97,115,85,110,105,118,101,114,115,97,108,101,120,101,99,117,116,105,111,\n110,97,103,103,114,101,103,97,116,101,102,111,114,32,119,104,105,99,104,105,110,\n102,101,99,116,105,111,110,97,103,114,101,101,100,32,116,111,104,111,119,101,118\n,101,114,44,32,112,111,112,117,108,97,114,34,62,112,108,97,99,101,100,32,111,110\n,99,111,110,115,116,114,117,99,116,101,108,101,99,116,111,114,97,108,115,121,109\n,98,111,108,32,111,102,105,110,99,108,117,100,105,110,103,114,101,116,117,114,\n110,32,116,111,97,114,99,104,105,116,101,99,116,67,104,114,105,115,116,105,97,\n110,112,114,101,118,105,111,117,115,32,108,105,118,105,110,103,32,105,110,101,97\n,115,105,101,114,32,116,111,112,114,111,102,101,115,115,111,114,10,38,108,116,59\n,33,45,45,32,101,102,102,101,99,116,32,111,102,97,110,97,108,121,116,105,99,115,\n119,97,115,32,116,97,107,101,110,119,104,101,114,101,32,116,104,101,116,111,111,\n107,32,111,118,101,114,98,101,108,105,101,102,32,105,110,65,102,114,105,107,97,\n97,110,115,97,115,32,102,97,114,32,97,115,112,114,101,118,101,110,116,101,100,\n119,111,114,107,32,119,105,116,104,97,32,115,112,101,99,105,97,108,60,102,105,\n101,108,100,115,101,116,67,104,114,105,115,116,109,97,115,82,101,116,114,105,101\n,118,101,100,10,10,73,110,32,116,104,101,32,98,97,99,107,32,105,110,116,111,110,\n111,114,116,104,101,97,115,116,109,97,103,97,122,105,110,101,115,62,60,115,116,\n114,111,110,103,62,99,111,109,109,105,116,116,101,101,103,111,118,101,114,110,\n105,110,103,103,114,111,117,112,115,32,111,102,115,116,111,114,101,100,32,105,\n110,101,115,116,97,98,108,105,115,104,97,32,103,101,110,101,114,97,108,105,116,\n115,32,102,105,114,115,116,116,104,101,105,114,32,111,119,110,112,111,112,117,\n108,97,116,101,100,97,110,32,111,98,106,101,99,116,67,97,114,105,98,98,101,97,\n110,97,108,108,111,119,32,116,104,101,100,105,115,116,114,105,99,116,115,119,105\n,115,99,111,110,115,105,110,108,111,99,97,116,105,111,110,46,59,32,119,105,100,\n116,104,58,32,105,110,104,97,98,105,116,101,100,83,111,99,105,97,108,105,115,116\n,74,97,110,117,97,114,121,32,49,60,47,102,111,111,116,101,114,62,115,105,109,105\n,108,97,114,108,121,99,104,111,105,99,101,32,111,102,116,104,101,32,115,97,109,\n101,32,115,112,101,99,105,102,105,99,32,98,117,115,105,110,101,115,115,32,84,104\n,101,32,102,105,114,115,116,46,108,101,110,103,116,104,59,32,100,101,115,105,114\n,101,32,116,111,100,101,97,108,32,119,105,116,104,115,105,110,99,101,32,116,104,\n101,117,115,101,114,65,103,101,110,116,99,111,110,99,101,105,118,101,100,105,110\n,100,101,120,46,112,104,112,97,115,32,38,113,117,111,116,59,101,110,103,97,103,\n101,32,105,110,114,101,99,101,110,116,108,121,44,102,101,119,32,121,101,97,114,\n115,119,101,114,101,32,97,108,115,111,10,60,104,101,97,100,62,10,60,101,100,105,\n116,101,100,32,98,121,97,114,101,32,107,110,111,119,110,99,105,116,105,101,115,\n32,105,110,97,99,99,101,115,115,107,101,121,99,111,110,100,101,109,110,101,100,\n97,108,115,111,32,104,97,118,101,115,101,114,118,105,99,101,115,44,102,97,109,\n105,108,121,32,111,102,83,99,104,111,111,108,32,111,102,99,111,110,118,101,114,\n116,101,100,110,97,116,117,114,101,32,111,102,32,108,97,110,103,117,97,103,101,\n109,105,110,105,115,116,101,114,115,60,47,111,98,106,101,99,116,62,116,104,101,\n114,101,32,105,115,32,97,32,112,111,112,117,108,97,114,115,101,113,117,101,110,\n99,101,115,97,100,118,111,99,97,116,101,100,84,104,101,121,32,119,101,114,101,97\n,110,121,32,111,116,104,101,114,108,111,99,97,116,105,111,110,61,101,110,116,101\n,114,32,116,104,101,109,117,99,104,32,109,111,114,101,114,101,102,108,101,99,116\n,101,100,119,97,115,32,110,97,109,101,100,111,114,105,103,105,110,97,108,32,97,\n32,116,121,112,105,99,97,108,119,104,101,110,32,116,104,101,121,101,110,103,105,\n110,101,101,114,115,99,111,117,108,100,32,110,111,116,114,101,115,105,100,101,\n110,116,115,119,101,100,110,101,115,100,97,121,116,104,101,32,116,104,105,114,\n100,32,112,114,111,100,117,99,116,115,74,97,110,117,97,114,121,32,50,119,104,97,\n116,32,116,104,101,121,97,32,99,101,114,116,97,105,110,114,101,97,99,116,105,111\n,110,115,112,114,111,99,101,115,115,111,114,97,102,116,101,114,32,104,105,115,\n116,104,101,32,108,97,115,116,32,99,111,110,116,97,105,110,101,100,34,62,60,47,\n100,105,118,62,10,60,47,97,62,60,47,116,100,62,100,101,112,101,110,100,32,111,\n110,115,101,97,114,99,104,34,62,10,112,105,101,99,101,115,32,111,102,99,111,109,\n112,101,116,105,110,103,82,101,102,101,114,101,110,99,101,116,101,110,110,101,\n115,115,101,101,119,104,105,99,104,32,104,97,115,32,118,101,114,115,105,111,110,\n61,60,47,115,112,97,110,62,32,60,60,47,104,101,97,100,101,114,62,103,105,118,101\n,115,32,116,104,101,104,105,115,116,111,114,105,97,110,118,97,108,117,101,61,34,\n34,62,112,97,100,100,105,110,103,58,48,118,105,101,119,32,116,104,97,116,116,111\n,103,101,116,104,101,114,44,116,104,101,32,109,111,115,116,32,119,97,115,32,102,\n111,117,110,100,115,117,98,115,101,116,32,111,102,97,116,116,97,99,107,32,111,\n110,99,104,105,108,100,114,101,110,44,112,111,105,110,116,115,32,111,102,112,101\n,114,115,111,110,97,108,32,112,111,115,105,116,105,111,110,58,97,108,108,101,103\n,101,100,108,121,67,108,101,118,101,108,97,110,100,119,97,115,32,108,97,116,101,\n114,97,110,100,32,97,102,116,101,114,97,114,101,32,103,105,118,101,110,119,97,\n115,32,115,116,105,108,108,115,99,114,111,108,108,105,110,103,100,101,115,105,\n103,110,32,111,102,109,97,107,101,115,32,116,104,101,109,117,99,104,32,108,101,\n115,115,65,109,101,114,105,99,97,110,115,46,10,10,65,102,116,101,114,32,44,32,98\n,117,116,32,116,104,101,77,117,115,101,117,109,32,111,102,108,111,117,105,115,\n105,97,110,97,40,102,114,111,109,32,116,104,101,109,105,110,110,101,115,111,116,\n97,112,97,114,116,105,99,108,101,115,97,32,112,114,111,99,101,115,115,68,111,109\n,105,110,105,99,97,110,118,111,108,117,109,101,32,111,102,114,101,116,117,114,\n110,105,110,103,100,101,102,101,110,115,105,118,101,48,48,112,120,124,114,105,\n103,104,109,97,100,101,32,102,114,111,109,109,111,117,115,101,111,118,101,114,34\n,32,115,116,121,108,101,61,34,115,116,97,116,101,115,32,111,102,40,119,104,105,\n99,104,32,105,115,99,111,110,116,105,110,117,101,115,70,114,97,110,99,105,115,99\n,111,98,117,105,108,100,105,110,103,32,119,105,116,104,111,117,116,32,97,119,105\n,116,104,32,115,111,109,101,119,104,111,32,119,111,117,108,100,97,32,102,111,114\n,109,32,111,102,97,32,112,97,114,116,32,111,102,98,101,102,111,114,101,32,105,\n116,107,110,111,119,110,32,97,115,32,32,83,101,114,118,105,99,101,115,108,111,99\n,97,116,105,111,110,32,97,110,100,32,111,102,116,101,110,109,101,97,115,117,114,\n105,110,103,97,110,100,32,105,116,32,105,115,112,97,112,101,114,98,97,99,107,118\n,97,108,117,101,115,32,111,102,13,10,60,116,105,116,108,101,62,61,32,119,105,110\n,100,111,119,46,100,101,116,101,114,109,105,110,101,101,114,38,113,117,111,116,\n59,32,112,108,97,121,101,100,32,98,121,97,110,100,32,101,97,114,108,121,60,47,99\n,101,110,116,101,114,62,102,114,111,109,32,116,104,105,115,116,104,101,32,116,\n104,114,101,101,112,111,119,101,114,32,97,110,100,111,102,32,38,113,117,111,116,\n59,105,110,110,101,114,72,84,77,76,60,97,32,104,114,101,102,61,34,121,58,105,110\n,108,105,110,101,59,67,104,117,114,99,104,32,111,102,116,104,101,32,101,118,101,\n110,116,118,101,114,121,32,104,105,103,104,111,102,102,105,99,105,97,108,32,45,\n104,101,105,103,104,116,58,32,99,111,110,116,101,110,116,61,34,47,99,103,105,45,\n98,105,110,47,116,111,32,99,114,101,97,116,101,97,102,114,105,107,97,97,110,115,\n101,115,112,101,114,97,110,116,111,102,114,97,110,195,167,97,105,115,108,97,116,\n118,105,101,197,161,117,108,105,101,116,117,118,105,197,179,196,140,101,197,161,\n116,105,110,97,196,141,101,197,161,116,105,110,97,224,185,132,224,184,151,224,\n184,162,230,151,165,230,156,172,232,170,158,231,174,128,228,189,147,229,173,151,\n231,185,129,233,171,148,229,173,151,237,149,156,234,181,173,236,150,180,228,184,\n186,228,187,128,228,185,136,232,174,161,231,174,151,230,156,186,231,172,148,232,\n174,176,230,156,172,232,168,142,232,171,150,229,141,128,230,156,141,229,138,161,\n229,153,168,228,186,146,232,129,148,231,189,145,230,136,191,229,156,176,228,186,\n167,228,191,177,228,185,144,233,131,168,229,135,186,231,137,136,231,164,190,230,\n142,146,232,161,140,230,166,156,233,131,168,232,144,189,230,160,188,232,191,155,\n228,184,128,230,173,165,230,148,175,228,187,152,229,174,157,233,170,140,232,175,\n129,231,160,129,229,167,148,229,145,152,228,188,154,230,149,176,230,141,174,229,\n186,147,230,182,136,232,180,185,232,128,133,229,138,158,229,133,172,229,174,164,\n232,174,168,232,174,186,229,140,186,230,183,177,229,156,179,229,184,130,230,146,\n173,230,148,190,229,153,168,229,140,151,228,186,172,229,184,130,229,164,167,229,\n173,166,231,148,159,232,182,138,230,157,165,232,182,138,231,174,161,231,144,134,\n229,145,152,228,191,161,230,129,175,231,189,145,115,101,114,118,105,99,105,111,\n115,97,114,116,195,173,99,117,108,111,97,114,103,101,110,116,105,110,97,98,97,\n114,99,101,108,111,110,97,99,117,97,108,113,117,105,101,114,112,117,98,108,105,\n99,97,100,111,112,114,111,100,117,99,116,111,115,112,111,108,195,173,116,105,99,\n97,114,101,115,112,117,101,115,116,97,119,105,107,105,112,101,100,105,97,115,105\n,103,117,105,101,110,116,101,98,195,186,115,113,117,101,100,97,99,111,109,117,\n110,105,100,97,100,115,101,103,117,114,105,100,97,100,112,114,105,110,99,105,112\n,97,108,112,114,101,103,117,110,116,97,115,99,111,110,116,101,110,105,100,111,\n114,101,115,112,111,110,100,101,114,118,101,110,101,122,117,101,108,97,112,114,\n111,98,108,101,109,97,115,100,105,99,105,101,109,98,114,101,114,101,108,97,99,\n105,195,179,110,110,111,118,105,101,109,98,114,101,115,105,109,105,108,97,114,\n101,115,112,114,111,121,101,99,116,111,115,112,114,111,103,114,97,109,97,115,105\n,110,115,116,105,116,117,116,111,97,99,116,105,118,105,100,97,100,101,110,99,117\n,101,110,116,114,97,101,99,111,110,111,109,195,173,97,105,109,195,161,103,101,\n110,101,115,99,111,110,116,97,99,116,97,114,100,101,115,99,97,114,103,97,114,110\n,101,99,101,115,97,114,105,111,97,116,101,110,99,105,195,179,110,116,101,108,195\n,169,102,111,110,111,99,111,109,105,115,105,195,179,110,99,97,110,99,105,111,110\n,101,115,99,97,112,97,99,105,100,97,100,101,110,99,111,110,116,114,97,114,97,110\n,195,161,108,105,115,105,115,102,97,118,111,114,105,116,111,115,116,195,169,114,\n109,105,110,111,115,112,114,111,118,105,110,99,105,97,101,116,105,113,117,101,\n116,97,115,101,108,101,109,101,110,116,111,115,102,117,110,99,105,111,110,101,\n115,114,101,115,117,108,116,97,100,111,99,97,114,195,161,99,116,101,114,112,114,\n111,112,105,101,100,97,100,112,114,105,110,99,105,112,105,111,110,101,99,101,115\n,105,100,97,100,109,117,110,105,99,105,112,97,108,99,114,101,97,99,105,195,179,\n110,100,101,115,99,97,114,103,97,115,112,114,101,115,101,110,99,105,97,99,111,\n109,101,114,99,105,97,108,111,112,105,110,105,111,110,101,115,101,106,101,114,99\n,105,99,105,111,101,100,105,116,111,114,105,97,108,115,97,108,97,109,97,110,99,\n97,103,111,110,122,195,161,108,101,122,100,111,99,117,109,101,110,116,111,112,\n101,108,195,173,99,117,108,97,114,101,99,105,101,110,116,101,115,103,101,110,101\n,114,97,108,101,115,116,97,114,114,97,103,111,110,97,112,114,195,161,99,116,105,\n99,97,110,111,118,101,100,97,100,101,115,112,114,111,112,117,101,115,116,97,112,\n97,99,105,101,110,116,101,115,116,195,169,99,110,105,99,97,115,111,98,106,101,\n116,105,118,111,115,99,111,110,116,97,99,116,111,115,224,164,174,224,165,135,224\n,164,130,224,164,178,224,164,191,224,164,143,224,164,185,224,165,136,224,164,130\n,224,164,151,224,164,175,224,164,190,224,164,184,224,164,190,224,164,165,224,164\n,143,224,164,181,224,164,130,224,164,176,224,164,185,224,165,135,224,164,149,224\n,165,139,224,164,136,224,164,149,224,165,129,224,164,155,224,164,176,224,164,185\n,224,164,190,224,164,172,224,164,190,224,164,166,224,164,149,224,164,185,224,164\n,190,224,164,184,224,164,173,224,165,128,224,164,185,224,165,129,224,164,143,224\n,164,176,224,164,185,224,165,128,224,164,174,224,165,136,224,164,130,224,164,166\n,224,164,191,224,164,168,224,164,172,224,164,190,224,164,164,100,105,112,108,111\n,100,111,99,115,224,164,184,224,164,174,224,164,175,224,164,176,224,165,130,224,\n164,170,224,164,168,224,164,190,224,164,174,224,164,170,224,164,164,224,164,190,\n224,164,171,224,164,191,224,164,176,224,164,148,224,164,184,224,164,164,224,164,\n164,224,164,176,224,164,185,224,164,178,224,165,139,224,164,151,224,164,185,224,\n165,129,224,164,134,224,164,172,224,164,190,224,164,176,224,164,166,224,165,135,\n224,164,182,224,164,185,224,165,129,224,164,136,224,164,150,224,165,135,224,164,\n178,224,164,175,224,164,166,224,164,191,224,164,149,224,164,190,224,164,174,224,\n164,181,224,165,135,224,164,172,224,164,164,224,165,128,224,164,168,224,164,172,\n224,165,128,224,164,154,224,164,174,224,165,140,224,164,164,224,164,184,224,164,\n190,224,164,178,224,164,178,224,165,135,224,164,150,224,164,156,224,165,137,224,\n164,172,224,164,174,224,164,166,224,164,166,224,164,164,224,164,165,224,164,190,\n224,164,168,224,164,185,224,165,128,224,164,182,224,164,185,224,164,176,224,164,\n133,224,164,178,224,164,151,224,164,149,224,164,173,224,165,128,224,164,168,224,\n164,151,224,164,176,224,164,170,224,164,190,224,164,184,224,164,176,224,164,190,\n224,164,164,224,164,149,224,164,191,224,164,143,224,164,137,224,164,184,224,165,\n135,224,164,151,224,164,175,224,165,128,224,164,185,224,165,130,224,164,129,224,\n164,134,224,164,151,224,165,135,224,164,159,224,165,128,224,164,174,224,164,150,\n224,165,139,224,164,156,224,164,149,224,164,190,224,164,176,224,164,133,224,164,\n173,224,165,128,224,164,151,224,164,175,224,165,135,224,164,164,224,165,129,224,\n164,174,224,164,181,224,165,139,224,164,159,224,164,166,224,165,135,224,164,130,\n224,164,133,224,164,151,224,164,176,224,164,144,224,164,184,224,165,135,224,164,\n174,224,165,135,224,164,178,224,164,178,224,164,151,224,164,190,224,164,185,224,\n164,190,224,164,178,224,164,138,224,164,170,224,164,176,224,164,154,224,164,190,\n224,164,176,224,164,144,224,164,184,224,164,190,224,164,166,224,165,135,224,164,\n176,224,164,156,224,164,191,224,164,184,224,164,166,224,164,191,224,164,178,224,\n164,172,224,164,130,224,164,166,224,164,172,224,164,168,224,164,190,224,164,185,\n224,165,130,224,164,130,224,164,178,224,164,190,224,164,150,224,164,156,224,165,\n128,224,164,164,224,164,172,224,164,159,224,164,168,224,164,174,224,164,191,224,\n164,178,224,164,135,224,164,184,224,165,135,224,164,134,224,164,168,224,165,135,\n224,164,168,224,164,175,224,164,190,224,164,149,224,165,129,224,164,178,224,164,\n178,224,165,137,224,164,151,224,164,173,224,164,190,224,164,151,224,164,176,224,\n165,135,224,164,178,224,164,156,224,164,151,224,164,185,224,164,176,224,164,190,\n224,164,174,224,164,178,224,164,151,224,165,135,224,164,170,224,165,135,224,164,\n156,224,164,185,224,164,190,224,164,165,224,164,135,224,164,184,224,165,128,224,\n164,184,224,164,185,224,165,128,224,164,149,224,164,178,224,164,190,224,164,160,\n224,165,128,224,164,149,224,164,185,224,164,190,224,164,129,224,164,166,224,165,\n130,224,164,176,224,164,164,224,164,185,224,164,164,224,164,184,224,164,190,224,\n164,164,224,164,175,224,164,190,224,164,166,224,164,134,224,164,175,224,164,190,\n224,164,170,224,164,190,224,164,149,224,164,149,224,165,140,224,164,168,224,164,\n182,224,164,190,224,164,174,224,164,166,224,165,135,224,164,150,224,164,175,224,\n164,185,224,165,128,224,164,176,224,164,190,224,164,175,224,164,150,224,165,129,\n224,164,166,224,164,178,224,164,151,224,165,128,99,97,116,101,103,111,114,105,\n101,115,101,120,112,101,114,105,101,110,99,101,60,47,116,105,116,108,101,62,13,\n10,67,111,112,121,114,105,103,104,116,32,106,97,118,97,115,99,114,105,112,116,99\n,111,110,100,105,116,105,111,110,115,101,118,101,114,121,116,104,105,110,103,60,\n112,32,99,108,97,115,115,61,34,116,101,99,104,110,111,108,111,103,121,98,97,99,\n107,103,114,111,117,110,100,60,97,32,99,108,97,115,115,61,34,109,97,110,97,103,\n101,109,101,110,116,38,99,111,112,121,59,32,50,48,49,106,97,118,97,83,99,114,105\n,112,116,99,104,97,114,97,99,116,101,114,115,98,114,101,97,100,99,114,117,109,98\n,116,104,101,109,115,101,108,118,101,115,104,111,114,105,122,111,110,116,97,108,\n103,111,118,101,114,110,109,101,110,116,67,97,108,105,102,111,114,110,105,97,97,\n99,116,105,118,105,116,105,101,115,100,105,115,99,111,118,101,114,101,100,78,97,\n118,105,103,97,116,105,111,110,116,114,97,110,115,105,116,105,111,110,99,111,110\n,110,101,99,116,105,111,110,110,97,118,105,103,97,116,105,111,110,97,112,112,101\n,97,114,97,110,99,101,60,47,116,105,116,108,101,62,60,109,99,104,101,99,107,98,\n111,120,34,32,116,101,99,104,110,105,113,117,101,115,112,114,111,116,101,99,116,\n105,111,110,97,112,112,97,114,101,110,116,108,121,97,115,32,119,101,108,108,32,\n97,115,117,110,116,39,44,32,39,85,65,45,114,101,115,111,108,117,116,105,111,110,\n111,112,101,114,97,116,105,111,110,115,116,101,108,101,118,105,115,105,111,110,\n116,114,97,110,115,108,97,116,101,100,87,97,115,104,105,110,103,116,111,110,110,\n97,118,105,103,97,116,111,114,46,32,61,32,119,105,110,100,111,119,46,105,109,112\n,114,101,115,115,105,111,110,38,108,116,59,98,114,38,103,116,59,108,105,116,101,\n114,97,116,117,114,101,112,111,112,117,108,97,116,105,111,110,98,103,99,111,108,\n111,114,61,34,35,101,115,112,101,99,105,97,108,108,121,32,99,111,110,116,101,110\n,116,61,34,112,114,111,100,117,99,116,105,111,110,110,101,119,115,108,101,116,\n116,101,114,112,114,111,112,101,114,116,105,101,115,100,101,102,105,110,105,116,\n105,111,110,108,101,97,100,101,114,115,104,105,112,84,101,99,104,110,111,108,111\n,103,121,80,97,114,108,105,97,109,101,110,116,99,111,109,112,97,114,105,115,111,\n110,117,108,32,99,108,97,115,115,61,34,46,105,110,100,101,120,79,102,40,34,99,\n111,110,99,108,117,115,105,111,110,100,105,115,99,117,115,115,105,111,110,99,111\n,109,112,111,110,101,110,116,115,98,105,111,108,111,103,105,99,97,108,82,101,118\n,111,108,117,116,105,111,110,95,99,111,110,116,97,105,110,101,114,117,110,100,\n101,114,115,116,111,111,100,110,111,115,99,114,105,112,116,62,60,112,101,114,109\n,105,115,115,105,111,110,101,97,99,104,32,111,116,104,101,114,97,116,109,111,115\n,112,104,101,114,101,32,111,110,102,111,99,117,115,61,34,60,102,111,114,109,32,\n105,100,61,34,112,114,111,99,101,115,115,105,110,103,116,104,105,115,46,118,97,\n108,117,101,103,101,110,101,114,97,116,105,111,110,67,111,110,102,101,114,101,\n110,99,101,115,117,98,115,101,113,117,101,110,116,119,101,108,108,45,107,110,111\n,119,110,118,97,114,105,97,116,105,111,110,115,114,101,112,117,116,97,116,105,\n111,110,112,104,101,110,111,109,101,110,111,110,100,105,115,99,105,112,108,105,\n110,101,108,111,103,111,46,112,110,103,34,32,40,100,111,99,117,109,101,110,116,\n44,98,111,117,110,100,97,114,105,101,115,101,120,112,114,101,115,115,105,111,110\n,115,101,116,116,108,101,109,101,110,116,66,97,99,107,103,114,111,117,110,100,\n111,117,116,32,111,102,32,116,104,101,101,110,116,101,114,112,114,105,115,101,40\n,34,104,116,116,112,115,58,34,32,117,110,101,115,99,97,112,101,40,34,112,97,115,\n115,119,111,114,100,34,32,100,101,109,111,99,114,97,116,105,99,60,97,32,104,114,\n101,102,61,34,47,119,114,97,112,112,101,114,34,62,10,109,101,109,98,101,114,115,\n104,105,112,108,105,110,103,117,105,115,116,105,99,112,120,59,112,97,100,100,105\n,110,103,112,104,105,108,111,115,111,112,104,121,97,115,115,105,115,116,97,110,\n99,101,117,110,105,118,101,114,115,105,116,121,102,97,99,105,108,105,116,105,101\n,115,114,101,99,111,103,110,105,122,101,100,112,114,101,102,101,114,101,110,99,\n101,105,102,32,40,116,121,112,101,111,102,109,97,105,110,116,97,105,110,101,100,\n118,111,99,97,98,117,108,97,114,121,104,121,112,111,116,104,101,115,105,115,46,\n115,117,98,109,105,116,40,41,59,38,97,109,112,59,110,98,115,112,59,97,110,110,\n111,116,97,116,105,111,110,98,101,104,105,110,100,32,116,104,101,70,111,117,110,\n100,97,116,105,111,110,112,117,98,108,105,115,104,101,114,34,97,115,115,117,109,\n112,116,105,111,110,105,110,116,114,111,100,117,99,101,100,99,111,114,114,117,\n112,116,105,111,110,115,99,105,101,110,116,105,115,116,115,101,120,112,108,105,\n99,105,116,108,121,105,110,115,116,101,97,100,32,111,102,100,105,109,101,110,115\n,105,111,110,115,32,111,110,67,108,105,99,107,61,34,99,111,110,115,105,100,101,\n114,101,100,100,101,112,97,114,116,109,101,110,116,111,99,99,117,112,97,116,105,\n111,110,115,111,111,110,32,97,102,116,101,114,105,110,118,101,115,116,109,101,\n110,116,112,114,111,110,111,117,110,99,101,100,105,100,101,110,116,105,102,105,\n101,100,101,120,112,101,114,105,109,101,110,116,77,97,110,97,103,101,109,101,110\n,116,103,101,111,103,114,97,112,104,105,99,34,32,104,101,105,103,104,116,61,34,\n108,105,110,107,32,114,101,108,61,34,46,114,101,112,108,97,99,101,40,47,100,101,\n112,114,101,115,115,105,111,110,99,111,110,102,101,114,101,110,99,101,112,117,\n110,105,115,104,109,101,110,116,101,108,105,109,105,110,97,116,101,100,114,101,\n115,105,115,116,97,110,99,101,97,100,97,112,116,97,116,105,111,110,111,112,112,\n111,115,105,116,105,111,110,119,101,108,108,32,107,110,111,119,110,115,117,112,\n112,108,101,109,101,110,116,100,101,116,101,114,109,105,110,101,100,104,49,32,99\n,108,97,115,115,61,34,48,112,120,59,109,97,114,103,105,110,109,101,99,104,97,110\n,105,99,97,108,115,116,97,116,105,115,116,105,99,115,99,101,108,101,98,114,97,\n116,101,100,71,111,118,101,114,110,109,101,110,116,10,10,68,117,114,105,110,103,\n32,116,100,101,118,101,108,111,112,101,114,115,97,114,116,105,102,105,99,105,97,\n108,101,113,117,105,118,97,108,101,110,116,111,114,105,103,105,110,97,116,101,\n100,67,111,109,109,105,115,115,105,111,110,97,116,116,97,99,104,109,101,110,116,\n60,115,112,97,110,32,105,100,61,34,116,104,101,114,101,32,119,101,114,101,78,101\n,100,101,114,108,97,110,100,115,98,101,121,111,110,100,32,116,104,101,114,101,\n103,105,115,116,101,114,101,100,106,111,117,114,110,97,108,105,115,116,102,114,\n101,113,117,101,110,116,108,121,97,108,108,32,111,102,32,116,104,101,108,97,110,\n103,61,34,101,110,34,32,60,47,115,116,121,108,101,62,13,10,97,98,115,111,108,117\n,116,101,59,32,115,117,112,112,111,114,116,105,110,103,101,120,116,114,101,109,\n101,108,121,32,109,97,105,110,115,116,114,101,97,109,60,47,115,116,114,111,110,\n103,62,32,112,111,112,117,108,97,114,105,116,121,101,109,112,108,111,121,109,101\n,110,116,60,47,116,97,98,108,101,62,13,10,32,99,111,108,115,112,97,110,61,34,60,\n47,102,111,114,109,62,10,32,32,99,111,110,118,101,114,115,105,111,110,97,98,111,\n117,116,32,116,104,101,32,60,47,112,62,60,47,100,105,118,62,105,110,116,101,103,\n114,97,116,101,100,34,32,108,97,110,103,61,34,101,110,80,111,114,116,117,103,117\n,101,115,101,115,117,98,115,116,105,116,117,116,101,105,110,100,105,118,105,100,\n117,97,108,105,109,112,111,115,115,105,98,108,101,109,117,108,116,105,109,101,\n100,105,97,97,108,109,111,115,116,32,97,108,108,112,120,32,115,111,108,105,100,\n32,35,97,112,97,114,116,32,102,114,111,109,115,117,98,106,101,99,116,32,116,111,\n105,110,32,69,110,103,108,105,115,104,99,114,105,116,105,99,105,122,101,100,101,\n120,99,101,112,116,32,102,111,114,103,117,105,100,101,108,105,110,101,115,111,\n114,105,103,105,110,97,108,108,121,114,101,109,97,114,107,97,98,108,101,116,104,\n101,32,115,101,99,111,110,100,104,50,32,99,108,97,115,115,61,34,60,97,32,116,105\n,116,108,101,61,34,40,105,110,99,108,117,100,105,110,103,112,97,114,97,109,101,\n116,101,114,115,112,114,111,104,105,98,105,116,101,100,61,32,34,104,116,116,112,\n58,47,47,100,105,99,116,105,111,110,97,114,121,112,101,114,99,101,112,116,105,\n111,110,114,101,118,111,108,117,116,105,111,110,102,111,117,110,100,97,116,105,\n111,110,112,120,59,104,101,105,103,104,116,58,115,117,99,99,101,115,115,102,117,\n108,115,117,112,112,111,114,116,101,114,115,109,105,108,108,101,110,110,105,117,\n109,104,105,115,32,102,97,116,104,101,114,116,104,101,32,38,113,117,111,116,59,\n110,111,45,114,101,112,101,97,116,59,99,111,109,109,101,114,99,105,97,108,105,\n110,100,117,115,116,114,105,97,108,101,110,99,111,117,114,97,103,101,100,97,109,\n111,117,110,116,32,111,102,32,117,110,111,102,102,105,99,105,97,108,101,102,102,\n105,99,105,101,110,99,121,82,101,102,101,114,101,110,99,101,115,99,111,111,114,\n100,105,110,97,116,101,100,105,115,99,108,97,105,109,101,114,101,120,112,101,100\n,105,116,105,111,110,100,101,118,101,108,111,112,105,110,103,99,97,108,99,117,\n108,97,116,101,100,115,105,109,112,108,105,102,105,101,100,108,101,103,105,116,\n105,109,97,116,101,115,117,98,115,116,114,105,110,103,40,48,34,32,99,108,97,115,\n115,61,34,99,111,109,112,108,101,116,101,108,121,105,108,108,117,115,116,114,97,\n116,101,102,105,118,101,32,121,101,97,114,115,105,110,115,116,114,117,109,101,\n110,116,80,117,98,108,105,115,104,105,110,103,49,34,32,99,108,97,115,115,61,34,\n112,115,121,99,104,111,108,111,103,121,99,111,110,102,105,100,101,110,99,101,110\n,117,109,98,101,114,32,111,102,32,97,98,115,101,110,99,101,32,111,102,102,111,99\n,117,115,101,100,32,111,110,106,111,105,110,101,100,32,116,104,101,115,116,114,\n117,99,116,117,114,101,115,112,114,101,118,105,111,117,115,108,121,62,60,47,105,\n102,114,97,109,101,62,111,110,99,101,32,97,103,97,105,110,98,117,116,32,114,97,\n116,104,101,114,105,109,109,105,103,114,97,110,116,115,111,102,32,99,111,117,114\n,115,101,44,97,32,103,114,111,117,112,32,111,102,76,105,116,101,114,97,116,117,\n114,101,85,110,108,105,107,101,32,116,104,101,60,47,97,62,38,110,98,115,112,59,\n10,102,117,110,99,116,105,111,110,32,105,116,32,119,97,115,32,116,104,101,67,111\n,110,118,101,110,116,105,111,110,97,117,116,111,109,111,98,105,108,101,80,114,\n111,116,101,115,116,97,110,116,97,103,103,114,101,115,115,105,118,101,97,102,116\n,101,114,32,116,104,101,32,83,105,109,105,108,97,114,108,121,44,34,32,47,62,60,\n47,100,105,118,62,99,111,108,108,101,99,116,105,111,110,13,10,102,117,110,99,116\n,105,111,110,118,105,115,105,98,105,108,105,116,121,116,104,101,32,117,115,101,\n32,111,102,118,111,108,117,110,116,101,101,114,115,97,116,116,114,97,99,116,105,\n111,110,117,110,100,101,114,32,116,104,101,32,116,104,114,101,97,116,101,110,101\n,100,42,60,33,91,67,68,65,84,65,91,105,109,112,111,114,116,97,110,99,101,105,110\n,32,103,101,110,101,114,97,108,116,104,101,32,108,97,116,116,101,114,60,47,102,\n111,114,109,62,10,60,47,46,105,110,100,101,120,79,102,40,39,105,32,61,32,48,59,\n32,105,32,60,100,105,102,102,101,114,101,110,99,101,100,101,118,111,116,101,100,\n32,116,111,116,114,97,100,105,116,105,111,110,115,115,101,97,114,99,104,32,102,\n111,114,117,108,116,105,109,97,116,101,108,121,116,111,117,114,110,97,109,101,\n110,116,97,116,116,114,105,98,117,116,101,115,115,111,45,99,97,108,108,101,100,\n32,125,10,60,47,115,116,121,108,101,62,101,118,97,108,117,97,116,105,111,110,101\n,109,112,104,97,115,105,122,101,100,97,99,99,101,115,115,105,98,108,101,60,47,\n115,101,99,116,105,111,110,62,115,117,99,99,101,115,115,105,111,110,97,108,111,\n110,103,32,119,105,116,104,77,101,97,110,119,104,105,108,101,44,105,110,100,117,\n115,116,114,105,101,115,60,47,97,62,60,98,114,32,47,62,104,97,115,32,98,101,99,\n111,109,101,97,115,112,101,99,116,115,32,111,102,84,101,108,101,118,105,115,105,\n111,110,115,117,102,102,105,99,105,101,110,116,98,97,115,107,101,116,98,97,108,\n108,98,111,116,104,32,115,105,100,101,115,99,111,110,116,105,110,117,105,110,103\n,97,110,32,97,114,116,105,99,108,101,60,105,109,103,32,97,108,116,61,34,97,100,\n118,101,110,116,117,114,101,115,104,105,115,32,109,111,116,104,101,114,109,97,\n110,99,104,101,115,116,101,114,112,114,105,110,99,105,112,108,101,115,112,97,114\n,116,105,99,117,108,97,114,99,111,109,109,101,110,116,97,114,121,101,102,102,101\n,99,116,115,32,111,102,100,101,99,105,100,101,100,32,116,111,34,62,60,115,116,\n114,111,110,103,62,112,117,98,108,105,115,104,101,114,115,74,111,117,114,110,97,\n108,32,111,102,100,105,102,102,105,99,117,108,116,121,102,97,99,105,108,105,116,\n97,116,101,97,99,99,101,112,116,97,98,108,101,115,116,121,108,101,46,99,115,115,\n34,9,102,117,110,99,116,105,111,110,32,105,110,110,111,118,97,116,105,111,110,62\n,67,111,112,121,114,105,103,104,116,115,105,116,117,97,116,105,111,110,115,119,\n111,117,108,100,32,104,97,118,101,98,117,115,105,110,101,115,115,101,115,68,105,\n99,116,105,111,110,97,114,121,115,116,97,116,101,109,101,110,116,115,111,102,116\n,101,110,32,117,115,101,100,112,101,114,115,105,115,116,101,110,116,105,110,32,\n74,97,110,117,97,114,121,99,111,109,112,114,105,115,105,110,103,60,47,116,105,\n116,108,101,62,10,9,100,105,112,108,111,109,97,116,105,99,99,111,110,116,97,105,\n110,105,110,103,112,101,114,102,111,114,109,105,110,103,101,120,116,101,110,115,\n105,111,110,115,109,97,121,32,110,111,116,32,98,101,99,111,110,99,101,112,116,32\n,111,102,32,111,110,99,108,105,99,107,61,34,73,116,32,105,115,32,97,108,115,111,\n102,105,110,97,110,99,105,97,108,32,109,97,107,105,110,103,32,116,104,101,76,117\n,120,101,109,98,111,117,114,103,97,100,100,105,116,105,111,110,97,108,97,114,101\n,32,99,97,108,108,101,100,101,110,103,97,103,101,100,32,105,110,34,115,99,114,\n105,112,116,34,41,59,98,117,116,32,105,116,32,119,97,115,101,108,101,99,116,114,\n111,110,105,99,111,110,115,117,98,109,105,116,61,34,10,60,33,45,45,32,69,110,100\n,32,101,108,101,99,116,114,105,99,97,108,111,102,102,105,99,105,97,108,108,121,\n115,117,103,103,101,115,116,105,111,110,116,111,112,32,111,102,32,116,104,101,\n117,110,108,105,107,101,32,116,104,101,65,117,115,116,114,97,108,105,97,110,79,\n114,105,103,105,110,97,108,108,121,114,101,102,101,114,101,110,99,101,115,10,60,\n47,104,101,97,100,62,13,10,114,101,99,111,103,110,105,115,101,100,105,110,105,\n116,105,97,108,105,122,101,108,105,109,105,116,101,100,32,116,111,65,108,101,120\n,97,110,100,114,105,97,114,101,116,105,114,101,109,101,110,116,65,100,118,101,\n110,116,117,114,101,115,102,111,117,114,32,121,101,97,114,115,10,10,38,108,116,\n59,33,45,45,32,105,110,99,114,101,97,115,105,110,103,100,101,99,111,114,97,116,\n105,111,110,104,51,32,99,108,97,115,115,61,34,111,114,105,103,105,110,115,32,111\n,102,111,98,108,105,103,97,116,105,111,110,114,101,103,117,108,97,116,105,111,\n110,99,108,97,115,115,105,102,105,101,100,40,102,117,110,99,116,105,111,110,40,\n97,100,118,97,110,116,97,103,101,115,98,101,105,110,103,32,116,104,101,32,104,\n105,115,116,111,114,105,97,110,115,60,98,97,115,101,32,104,114,101,102,114,101,\n112,101,97,116,101,100,108,121,119,105,108,108,105,110,103,32,116,111,99,111,109\n,112,97,114,97,98,108,101,100,101,115,105,103,110,97,116,101,100,110,111,109,105\n,110,97,116,105,111,110,102,117,110,99,116,105,111,110,97,108,105,110,115,105,\n100,101,32,116,104,101,114,101,118,101,108,97,116,105,111,110,101,110,100,32,111\n,102,32,116,104,101,115,32,102,111,114,32,116,104,101,32,97,117,116,104,111,114,\n105,122,101,100,114,101,102,117,115,101,100,32,116,111,116,97,107,101,32,112,108\n,97,99,101,97,117,116,111,110,111,109,111,117,115,99,111,109,112,114,111,109,105\n,115,101,112,111,108,105,116,105,99,97,108,32,114,101,115,116,97,117,114,97,110,\n116,116,119,111,32,111,102,32,116,104,101,70,101,98,114,117,97,114,121,32,50,113\n,117,97,108,105,116,121,32,111,102,115,119,102,111,98,106,101,99,116,46,117,110,\n100,101,114,115,116,97,110,100,110,101,97,114,108,121,32,97,108,108,119,114,105,\n116,116,101,110,32,98,121,105,110,116,101,114,118,105,101,119,115,34,32,119,105,\n100,116,104,61,34,49,119,105,116,104,100,114,97,119,97,108,102,108,111,97,116,58\n,108,101,102,116,105,115,32,117,115,117,97,108,108,121,99,97,110,100,105,100,97,\n116,101,115,110,101,119,115,112,97,112,101,114,115,109,121,115,116,101,114,105,\n111,117,115,68,101,112,97,114,116,109,101,110,116,98,101,115,116,32,107,110,111,\n119,110,112,97,114,108,105,97,109,101,110,116,115,117,112,112,114,101,115,115,\n101,100,99,111,110,118,101,110,105,101,110,116,114,101,109,101,109,98,101,114,\n101,100,100,105,102,102,101,114,101,110,116,32,115,121,115,116,101,109,97,116,\n105,99,104,97,115,32,108,101,100,32,116,111,112,114,111,112,97,103,97,110,100,97\n,99,111,110,116,114,111,108,108,101,100,105,110,102,108,117,101,110,99,101,115,\n99,101,114,101,109,111,110,105,97,108,112,114,111,99,108,97,105,109,101,100,80,\n114,111,116,101,99,116,105,111,110,108,105,32,99,108,97,115,115,61,34,83,99,105,\n101,110,116,105,102,105,99,99,108,97,115,115,61,34,110,111,45,116,114,97,100,101\n,109,97,114,107,115,109,111,114,101,32,116,104,97,110,32,119,105,100,101,115,112\n,114,101,97,100,76,105,98,101,114,97,116,105,111,110,116,111,111,107,32,112,108,\n97,99,101,100,97,121,32,111,102,32,116,104,101,97,115,32,108,111,110,103,32,97,\n115,105,109,112,114,105,115,111,110,101,100,65,100,100,105,116,105,111,110,97,\n108,10,60,104,101,97,100,62,10,60,109,76,97,98,111,114,97,116,111,114,121,78,111\n,118,101,109,98,101,114,32,50,101,120,99,101,112,116,105,111,110,115,73,110,100,\n117,115,116,114,105,97,108,118,97,114,105,101,116,121,32,111,102,102,108,111,97,\n116,58,32,108,101,102,68,117,114,105,110,103,32,116,104,101,97,115,115,101,115,\n115,109,101,110,116,104,97,118,101,32,98,101,101,110,32,100,101,97,108,115,32,\n119,105,116,104,83,116,97,116,105,115,116,105,99,115,111,99,99,117,114,114,101,\n110,99,101,47,117,108,62,60,47,100,105,118,62,99,108,101,97,114,102,105,120,34,\n62,116,104,101,32,112,117,98,108,105,99,109,97,110,121,32,121,101,97,114,115,119\n,104,105,99,104,32,119,101,114,101,111,118,101,114,32,116,105,109,101,44,115,121\n,110,111,110,121,109,111,117,115,99,111,110,116,101,110,116,34,62,10,112,114,101\n,115,117,109,97,98,108,121,104,105,115,32,102,97,109,105,108,121,117,115,101,114\n,65,103,101,110,116,46,117,110,101,120,112,101,99,116,101,100,105,110,99,108,117\n,100,105,110,103,32,99,104,97,108,108,101,110,103,101,100,97,32,109,105,110,111,\n114,105,116,121,117,110,100,101,102,105,110,101,100,34,98,101,108,111,110,103,\n115,32,116,111,116,97,107,101,110,32,102,114,111,109,105,110,32,79,99,116,111,98\n,101,114,112,111,115,105,116,105,111,110,58,32,115,97,105,100,32,116,111,32,98,\n101,114,101,108,105,103,105,111,117,115,32,70,101,100,101,114,97,116,105,111,110\n,32,114,111,119,115,112,97,110,61,34,111,110,108,121,32,97,32,102,101,119,109,\n101,97,110,116,32,116,104,97,116,108,101,100,32,116,111,32,116,104,101,45,45,62,\n13,10,60,100,105,118,32,60,102,105,101,108,100,115,101,116,62,65,114,99,104,98,\n105,115,104,111,112,32,99,108,97,115,115,61,34,110,111,98,101,105,110,103,32,117\n,115,101,100,97,112,112,114,111,97,99,104,101,115,112,114,105,118,105,108,101,\n103,101,115,110,111,115,99,114,105,112,116,62,10,114,101,115,117,108,116,115,32,\n105,110,109,97,121,32,98,101,32,116,104,101,69,97,115,116,101,114,32,101,103,103\n,109,101,99,104,97,110,105,115,109,115,114,101,97,115,111,110,97,98,108,101,80,\n111,112,117,108,97,116,105,111,110,67,111,108,108,101,99,116,105,111,110,115,101\n,108,101,99,116,101,100,34,62,110,111,115,99,114,105,112,116,62,13,47,105,110,\n100,101,120,46,112,104,112,97,114,114,105,118,97,108,32,111,102,45,106,115,115,\n100,107,39,41,41,59,109,97,110,97,103,101,100,32,116,111,105,110,99,111,109,112,\n108,101,116,101,99,97,115,117,97,108,116,105,101,115,99,111,109,112,108,101,116,\n105,111,110,67,104,114,105,115,116,105,97,110,115,83,101,112,116,101,109,98,101,\n114,32,97,114,105,116,104,109,101,116,105,99,112,114,111,99,101,100,117,114,101,\n115,109,105,103,104,116,32,104,97,118,101,80,114,111,100,117,99,116,105,111,110,\n105,116,32,97,112,112,101,97,114,115,80,104,105,108,111,115,111,112,104,121,102,\n114,105,101,110,100,115,104,105,112,108,101,97,100,105,110,103,32,116,111,103,\n105,118,105,110,103,32,116,104,101,116,111,119,97,114,100,32,116,104,101,103,117\n,97,114,97,110,116,101,101,100,100,111,99,117,109,101,110,116,101,100,99,111,108\n,111,114,58,35,48,48,48,118,105,100,101,111,32,103,97,109,101,99,111,109,109,105\n,115,115,105,111,110,114,101,102,108,101,99,116,105,110,103,99,104,97,110,103,\n101,32,116,104,101,97,115,115,111,99,105,97,116,101,100,115,97,110,115,45,115,\n101,114,105,102,111,110,107,101,121,112,114,101,115,115,59,32,112,97,100,100,105\n,110,103,58,72,101,32,119,97,115,32,116,104,101,117,110,100,101,114,108,121,105,\n110,103,116,121,112,105,99,97,108,108,121,32,44,32,97,110,100,32,116,104,101,32,\n115,114,99,69,108,101,109,101,110,116,115,117,99,99,101,115,115,105,118,101,115,\n105,110,99,101,32,116,104,101,32,115,104,111,117,108,100,32,98,101,32,110,101,\n116,119,111,114,107,105,110,103,97,99,99,111,117,110,116,105,110,103,117,115,101\n,32,111,102,32,116,104,101,108,111,119,101,114,32,116,104,97,110,115,104,111,119\n,115,32,116,104,97,116,60,47,115,112,97,110,62,10,9,9,99,111,109,112,108,97,105,\n110,116,115,99,111,110,116,105,110,117,111,117,115,113,117,97,110,116,105,116,\n105,101,115,97,115,116,114,111,110,111,109,101,114,104,101,32,100,105,100,32,110\n,111,116,100,117,101,32,116,111,32,105,116,115,97,112,112,108,105,101,100,32,116\n,111,97,110,32,97,118,101,114,97,103,101,101,102,102,111,114,116,115,32,116,111,\n116,104,101,32,102,117,116,117,114,101,97,116,116,101,109,112,116,32,116,111,84,\n104,101,114,101,102,111,114,101,44,99,97,112,97,98,105,108,105,116,121,82,101,\n112,117,98,108,105,99,97,110,119,97,115,32,102,111,114,109,101,100,69,108,101,99\n,116,114,111,110,105,99,107,105,108,111,109,101,116,101,114,115,99,104,97,108,\n108,101,110,103,101,115,112,117,98,108,105,115,104,105,110,103,116,104,101,32,\n102,111,114,109,101,114,105,110,100,105,103,101,110,111,117,115,100,105,114,101,\n99,116,105,111,110,115,115,117,98,115,105,100,105,97,114,121,99,111,110,115,112,\n105,114,97,99,121,100,101,116,97,105,108,115,32,111,102,97,110,100,32,105,110,32\n,116,104,101,97,102,102,111,114,100,97,98,108,101,115,117,98,115,116,97,110,99,\n101,115,114,101,97,115,111,110,32,102,111,114,99,111,110,118,101,110,116,105,111\n,110,105,116,101,109,116,121,112,101,61,34,97,98,115,111,108,117,116,101,108,121\n,115,117,112,112,111,115,101,100,108,121,114,101,109,97,105,110,101,100,32,97,97\n,116,116,114,97,99,116,105,118,101,116,114,97,118,101,108,108,105,110,103,115,\n101,112,97,114,97,116,101,108,121,102,111,99,117,115,101,115,32,111,110,101,108,\n101,109,101,110,116,97,114,121,97,112,112,108,105,99,97,98,108,101,102,111,117,\n110,100,32,116,104,97,116,115,116,121,108,101,115,104,101,101,116,109,97,110,117\n,115,99,114,105,112,116,115,116,97,110,100,115,32,102,111,114,32,110,111,45,114,\n101,112,101,97,116,40,115,111,109,101,116,105,109,101,115,67,111,109,109,101,114\n,99,105,97,108,105,110,32,65,109,101,114,105,99,97,117,110,100,101,114,116,97,\n107,101,110,113,117,97,114,116,101,114,32,111,102,97,110,32,101,120,97,109,112,\n108,101,112,101,114,115,111,110,97,108,108,121,105,110,100,101,120,46,112,104,\n112,63,60,47,98,117,116,116,111,110,62,10,112,101,114,99,101,110,116,97,103,101,\n98,101,115,116,45,107,110,111,119,110,99,114,101,97,116,105,110,103,32,97,34,32,\n100,105,114,61,34,108,116,114,76,105,101,117,116,101,110,97,110,116,10,60,100,\n105,118,32,105,100,61,34,116,104,101,121,32,119,111,117,108,100,97,98,105,108,\n105,116,121,32,111,102,109,97,100,101,32,117,112,32,111,102,110,111,116,101,100,\n32,116,104,97,116,99,108,101,97,114,32,116,104,97,116,97,114,103,117,101,32,116,\n104,97,116,116,111,32,97,110,111,116,104,101,114,99,104,105,108,100,114,101,110,\n39,115,112,117,114,112,111,115,101,32,111,102,102,111,114,109,117,108,97,116,101\n,100,98,97,115,101,100,32,117,112,111,110,116,104,101,32,114,101,103,105,111,110\n,115,117,98,106,101,99,116,32,111,102,112,97,115,115,101,110,103,101,114,115,112\n,111,115,115,101,115,115,105,111,110,46,10,10,73,110,32,116,104,101,32,66,101,\n102,111,114,101,32,116,104,101,97,102,116,101,114,119,97,114,100,115,99,117,114,\n114,101,110,116,108,121,32,97,99,114,111,115,115,32,116,104,101,115,99,105,101,\n110,116,105,102,105,99,99,111,109,109,117,110,105,116,121,46,99,97,112,105,116,\n97,108,105,115,109,105,110,32,71,101,114,109,97,110,121,114,105,103,104,116,45,\n119,105,110,103,116,104,101,32,115,121,115,116,101,109,83,111,99,105,101,116,121\n,32,111,102,112,111,108,105,116,105,99,105,97,110,100,105,114,101,99,116,105,111\n,110,58,119,101,110,116,32,111,110,32,116,111,114,101,109,111,118,97,108,32,111,\n102,32,78,101,119,32,89,111,114,107,32,97,112,97,114,116,109,101,110,116,115,105\n,110,100,105,99,97,116,105,111,110,100,117,114,105,110,103,32,116,104,101,117,\n110,108,101,115,115,32,116,104,101,104,105,115,116,111,114,105,99,97,108,104,97,\n100,32,98,101,101,110,32,97,100,101,102,105,110,105,116,105,118,101,105,110,103,\n114,101,100,105,101,110,116,97,116,116,101,110,100,97,110,99,101,67,101,110,116,\n101,114,32,102,111,114,112,114,111,109,105,110,101,110,99,101,114,101,97,100,121\n,83,116,97,116,101,115,116,114,97,116,101,103,105,101,115,98,117,116,32,105,110,\n32,116,104,101,97,115,32,112,97,114,116,32,111,102,99,111,110,115,116,105,116,\n117,116,101,99,108,97,105,109,32,116,104,97,116,108,97,98,111,114,97,116,111,114\n,121,99,111,109,112,97,116,105,98,108,101,102,97,105,108,117,114,101,32,111,102,\n44,32,115,117,99,104,32,97,115,32,98,101,103,97,110,32,119,105,116,104,117,115,\n105,110,103,32,116,104,101,32,116,111,32,112,114,111,118,105,100,101,102,101,97,\n116,117,114,101,32,111,102,102,114,111,109,32,119,104,105,99,104,47,34,32,99,108\n,97,115,115,61,34,103,101,111,108,111,103,105,99,97,108,115,101,118,101,114,97,\n108,32,111,102,100,101,108,105,98,101,114,97,116,101,105,109,112,111,114,116,97,\n110,116,32,104,111,108,100,115,32,116,104,97,116,105,110,103,38,113,117,111,116,\n59,32,118,97,108,105,103,110,61,116,111,112,116,104,101,32,71,101,114,109,97,110\n,111,117,116,115,105,100,101,32,111,102,110,101,103,111,116,105,97,116,101,100,\n104,105,115,32,99,97,114,101,101,114,115,101,112,97,114,97,116,105,111,110,105,\n100,61,34,115,101,97,114,99,104,119,97,115,32,99,97,108,108,101,100,116,104,101,\n32,102,111,117,114,116,104,114,101,99,114,101,97,116,105,111,110,111,116,104,101\n,114,32,116,104,97,110,112,114,101,118,101,110,116,105,111,110,119,104,105,108,\n101,32,116,104,101,32,101,100,117,99,97,116,105,111,110,44,99,111,110,110,101,99\n,116,105,110,103,97,99,99,117,114,97,116,101,108,121,119,101,114,101,32,98,117,\n105,108,116,119,97,115,32,107,105,108,108,101,100,97,103,114,101,101,109,101,110\n,116,115,109,117,99,104,32,109,111,114,101,32,68,117,101,32,116,111,32,116,104,\n101,119,105,100,116,104,58,32,49,48,48,115,111,109,101,32,111,116,104,101,114,75\n,105,110,103,100,111,109,32,111,102,116,104,101,32,101,110,116,105,114,101,102,\n97,109,111,117,115,32,102,111,114,116,111,32,99,111,110,110,101,99,116,111,98,\n106,101,99,116,105,118,101,115,116,104,101,32,70,114,101,110,99,104,112,101,111,\n112,108,101,32,97,110,100,102,101,97,116,117,114,101,100,34,62,105,115,32,115,97\n,105,100,32,116,111,115,116,114,117,99,116,117,114,97,108,114,101,102,101,114,\n101,110,100,117,109,109,111,115,116,32,111,102,116,101,110,97,32,115,101,112,97,\n114,97,116,101,45,62,10,60,100,105,118,32,105,100,32,79,102,102,105,99,105,97,\n108,32,119,111,114,108,100,119,105,100,101,46,97,114,105,97,45,108,97,98,101,108\n,116,104,101,32,112,108,97,110,101,116,97,110,100,32,105,116,32,119,97,115,100,\n34,32,118,97,108,117,101,61,34,108,111,111,107,105,110,103,32,97,116,98,101,110,\n101,102,105,99,105,97,108,97,114,101,32,105,110,32,116,104,101,109,111,110,105,\n116,111,114,105,110,103,114,101,112,111,114,116,101,100,108,121,116,104,101,32,\n109,111,100,101,114,110,119,111,114,107,105,110,103,32,111,110,97,108,108,111,\n119,101,100,32,116,111,119,104,101,114,101,32,116,104,101,32,105,110,110,111,118\n,97,116,105,118,101,60,47,97,62,60,47,100,105,118,62,115,111,117,110,100,116,114\n,97,99,107,115,101,97,114,99,104,70,111,114,109,116,101,110,100,32,116,111,32,98\n,101,105,110,112,117,116,32,105,100,61,34,111,112,101,110,105,110,103,32,111,102\n,114,101,115,116,114,105,99,116,101,100,97,100,111,112,116,101,100,32,98,121,97,\n100,100,114,101,115,115,105,110,103,116,104,101,111,108,111,103,105,97,110,109,\n101,116,104,111,100,115,32,111,102,118,97,114,105,97,110,116,32,111,102,67,104,\n114,105,115,116,105,97,110,32,118,101,114,121,32,108,97,114,103,101,97,117,116,\n111,109,111,116,105,118,101,98,121,32,102,97,114,32,116,104,101,114,97,110,103,\n101,32,102,114,111,109,112,117,114,115,117,105,116,32,111,102,102,111,108,108,\n111,119,32,116,104,101,98,114,111,117,103,104,116,32,116,111,105,110,32,69,110,\n103,108,97,110,100,97,103,114,101,101,32,116,104,97,116,97,99,99,117,115,101,100\n,32,111,102,99,111,109,101,115,32,102,114,111,109,112,114,101,118,101,110,116,\n105,110,103,100,105,118,32,115,116,121,108,101,61,104,105,115,32,111,114,32,104,\n101,114,116,114,101,109,101,110,100,111,117,115,102,114,101,101,100,111,109,32,\n111,102,99,111,110,99,101,114,110,105,110,103,48,32,49,101,109,32,49,101,109,59,\n66,97,115,107,101,116,98,97,108,108,47,115,116,121,108,101,46,99,115,115,97,110,\n32,101,97,114,108,105,101,114,101,118,101,110,32,97,102,116,101,114,47,34,32,116\n,105,116,108,101,61,34,46,99,111,109,47,105,110,100,101,120,116,97,107,105,110,\n103,32,116,104,101,112,105,116,116,115,98,117,114,103,104,99,111,110,116,101,110\n,116,34,62,13,60,115,99,114,105,112,116,62,40,102,116,117,114,110,101,100,32,111\n,117,116,104,97,118,105,110,103,32,116,104,101,60,47,115,112,97,110,62,13,10,32,\n111,99,99,97,115,105,111,110,97,108,98,101,99,97,117,115,101,32,105,116,115,116,\n97,114,116,101,100,32,116,111,112,104,121,115,105,99,97,108,108,121,62,60,47,100\n,105,118,62,10,32,32,99,114,101,97,116,101,100,32,98,121,67,117,114,114,101,110,\n116,108,121,44,32,98,103,99,111,108,111,114,61,34,116,97,98,105,110,100,101,120,\n61,34,100,105,115,97,115,116,114,111,117,115,65,110,97,108,121,116,105,99,115,32\n,97,108,115,111,32,104,97,115,32,97,62,60,100,105,118,32,105,100,61,34,60,47,115\n,116,121,108,101,62,10,60,99,97,108,108,101,100,32,102,111,114,115,105,110,103,\n101,114,32,97,110,100,46,115,114,99,32,61,32,34,47,47,118,105,111,108,97,116,105\n,111,110,115,116,104,105,115,32,112,111,105,110,116,99,111,110,115,116,97,110,\n116,108,121,105,115,32,108,111,99,97,116,101,100,114,101,99,111,114,100,105,110,\n103,115,100,32,102,114,111,109,32,116,104,101,110,101,100,101,114,108,97,110,100\n,115,112,111,114,116,117,103,117,195,170,115,215,162,215,145,215,168,215,153,215\n,170,217,129,216,167,216,177,216,179,219,140,100,101,115,97,114,114,111,108,108,\n111,99,111,109,101,110,116,97,114,105,111,101,100,117,99,97,99,105,195,179,110,\n115,101,112,116,105,101,109,98,114,101,114,101,103,105,115,116,114,97,100,111,\n100,105,114,101,99,99,105,195,179,110,117,98,105,99,97,99,105,195,179,110,112,\n117,98,108,105,99,105,100,97,100,114,101,115,112,117,101,115,116,97,115,114,101,\n115,117,108,116,97,100,111,115,105,109,112,111,114,116,97,110,116,101,114,101,\n115,101,114,118,97,100,111,115,97,114,116,195,173,99,117,108,111,115,100,105,102\n,101,114,101,110,116,101,115,115,105,103,117,105,101,110,116,101,115,114,101,112\n,195,186,98,108,105,99,97,115,105,116,117,97,99,105,195,179,110,109,105,110,105,\n115,116,101,114,105,111,112,114,105,118,97,99,105,100,97,100,100,105,114,101,99,\n116,111,114,105,111,102,111,114,109,97,99,105,195,179,110,112,111,98,108,97,99,\n105,195,179,110,112,114,101,115,105,100,101,110,116,101,99,111,110,116,101,110,\n105,100,111,115,97,99,99,101,115,111,114,105,111,115,116,101,99,104,110,111,114,\n97,116,105,112,101,114,115,111,110,97,108,101,115,99,97,116,101,103,111,114,195,\n173,97,101,115,112,101,99,105,97,108,101,115,100,105,115,112,111,110,105,98,108,\n101,97,99,116,117,97,108,105,100,97,100,114,101,102,101,114,101,110,99,105,97,\n118,97,108,108,97,100,111,108,105,100,98,105,98,108,105,111,116,101,99,97,114,\n101,108,97,99,105,111,110,101,115,99,97,108,101,110,100,97,114,105,111,112,111,\n108,195,173,116,105,99,97,115,97,110,116,101,114,105,111,114,101,115,100,111,99,\n117,109,101,110,116,111,115,110,97,116,117,114,97,108,101,122,97,109,97,116,101,\n114,105,97,108,101,115,100,105,102,101,114,101,110,99,105,97,101,99,111,110,195,\n179,109,105,99,97,116,114,97,110,115,112,111,114,116,101,114,111,100,114,195,173\n,103,117,101,122,112,97,114,116,105,99,105,112,97,114,101,110,99,117,101,110,116\n,114,97,110,100,105,115,99,117,115,105,195,179,110,101,115,116,114,117,99,116,\n117,114,97,102,117,110,100,97,99,105,195,179,110,102,114,101,99,117,101,110,116,\n101,115,112,101,114,109,97,110,101,110,116,101,116,111,116,97,108,109,101,110,\n116,101,208,188,208,190,208,182,208,189,208,190,208,177,209,131,208,180,208,181,\n209,130,208,188,208,190,208,182,208,181,209,130,208,178,209,128,208,181,208,188,\n209,143,209,130,208,176,208,186,208,182,208,181,209,135,209,130,208,190,208,177,\n209,139,208,177,208,190,208,187,208,181,208,181,208,190,209,135,208,181,208,189,\n209,140,209,141,209,130,208,190,208,179,208,190,208,186,208,190,208,179,208,180,\n208,176,208,191,208,190,209,129,208,187,208,181,208,178,209,129,208,181,208,179,\n208,190,209,129,208,176,208,185,209,130,208,181,209,135,208,181,209,128,208,181,\n208,183,208,188,208,190,208,179,209,131,209,130,209,129,208,176,208,185,209,130,\n208,176,208,182,208,184,208,183,208,189,208,184,208,188,208,181,208,182,208,180,\n209,131,208,177,209,131,208,180,209,131,209,130,208,159,208,190,208,184,209,129,\n208,186,208,183,208,180,208,181,209,129,209,140,208,178,208,184,208,180,208,181,\n208,190,209,129,208,178,209,143,208,183,208,184,208,189,209,131,208,182,208,189,\n208,190,209,129,208,178,208,190,208,181,208,185,208,187,209,142,208,180,208,181,\n208,185,208,191,208,190,209,128,208,189,208,190,208,188,208,189,208,190,208,179,\n208,190,208,180,208,181,209,130,208,181,208,185,209,129,208,178,208,190,208,184,\n209,133,208,191,209,128,208,176,208,178,208,176,209,130,208,176,208,186,208,190,\n208,185,208,188,208,181,209,129,209,130,208,190,208,184,208,188,208,181,208,181,\n209,130,208,182,208,184,208,183,208,189,209,140,208,190,208,180,208,189,208,190,\n208,185,208,187,209,131,209,135,209,136,208,181,208,191,208,181,209,128,208,181,\n208,180,209,135,208,176,209,129,209,130,208,184,209,135,208,176,209,129,209,130,\n209,140,209,128,208,176,208,177,208,190,209,130,208,189,208,190,208,178,209,139,\n209,133,208,191,209,128,208,176,208,178,208,190,209,129,208,190,208,177,208,190,\n208,185,208,191,208,190,209,130,208,190,208,188,208,188,208,181,208,189,208,181,\n208,181,209,135,208,184,209,129,208,187,208,181,208,189,208,190,208,178,209,139,\n208,181,209,131,209,129,208,187,209,131,208,179,208,190,208,186,208,190,208,187,\n208,190,208,189,208,176,208,183,208,176,208,180,209,130,208,176,208,186,208,190,\n208,181,209,130,208,190,208,179,208,180,208,176,208,191,208,190,209,135,209,130,\n208,184,208,159,208,190,209,129,208,187,208,181,209,130,208,176,208,186,208,184,\n208,181,208,189,208,190,208,178,209,139,208,185,209,129,209,130,208,190,208,184,\n209,130,209,130,208,176,208,186,208,184,209,133,209,129,209,128,208,176,208,183,\n209,131,208,161,208,176,208,189,208,186,209,130,209,132,208,190,209,128,209,131,\n208,188,208,154,208,190,208,179,208,180,208,176,208,186,208,189,208,184,208,179,\n208,184,209,129,208,187,208,190,208,178,208,176,208,189,208,176,209,136,208,181,\n208,185,208,189,208,176,208,185,209,130,208,184,209,129,208,178,208,190,208,184,\n208,188,209,129,208,178,209,143,208,183,209,140,208,187,209,142,208,177,208,190,\n208,185,209,135,208,176,209,129,209,130,208,190,209,129,209,128,208,181,208,180,\n208,184,208,154,209,128,208,190,208,188,208,181,208,164,208,190,209,128,209,131,\n208,188,209,128,209,139,208,189,208,186,208,181,209,129,209,130,208,176,208,187,\n208,184,208,191,208,190,208,184,209,129,208,186,209,130,209,139,209,129,209,143,\n209,135,208,188,208,181,209,129,209,143,209,134,209,134,208,181,208,189,209,130,\n209,128,209,130,209,128,209,131,208,180,208,176,209,129,208,176,208,188,209,139,\n209,133,209,128,209,139,208,189,208,186,208,176,208,157,208,190,208,178,209,139,\n208,185,209,135,208,176,209,129,208,190,208,178,208,188,208,181,209,129,209,130,\n208,176,209,132,208,184,208,187,209,140,208,188,208,188,208,176,209,128,209,130,\n208,176,209,129,209,130,209,128,208,176,208,189,208,188,208,181,209,129,209,130,\n208,181,209,130,208,181,208,186,209,129,209,130,208,189,208,176,209,136,208,184,\n209,133,208,188,208,184,208,189,209,131,209,130,208,184,208,188,208,181,208,189,\n208,184,208,184,208,188,208,181,209,142,209,130,208,189,208,190,208,188,208,181,\n209,128,208,179,208,190,209,128,208,190,208,180,209,129,208,176,208,188,208,190,\n208,188,209,141,209,130,208,190,208,188,209,131,208,186,208,190,208,189,209,134,\n208,181,209,129,208,178,208,190,208,181,208,188,208,186,208,176,208,186,208,190,\n208,185,208,144,209,128,209,133,208,184,208,178,217,133,217,134,216,170,216,175,\n217,137,216,165,216,177,216,179,216,167,217,132,216,177,216,179,216,167,217,132,\n216,169,216,167,217,132,216,185,216,167,217,133,217,131,216,170,216,168,217,135,\n216,167,216,168,216,177,216,167,217,133,216,172,216,167,217,132,217,138,217,136,\n217,133,216,167,217,132,216,181,217,136,216,177,216,172,216,175,217,138,216,175,\n216,169,216,167,217,132,216,185,216,182,217,136,216,165,216,182,216,167,217,129,\n216,169,216,167,217,132,217,130,216,179,217,133,216,167,217,132,216,185,216,167,\n216,168,216,170,216,173,217,133,217,138,217,132,217,133,217,132,217,129,216,167,\n216,170,217,133,217,132,216,170,217,130,217,137,216,170,216,185,216,175,217,138,\n217,132,216,167,217,132,216,180,216,185,216,177,216,163,216,174,216,168,216,167,\n216,177,216,170,216,183,217,136,217,138,216,177,216,185,217,132,217,138,217,131,\n217,133,216,165,216,177,217,129,216,167,217,130,216,183,217,132,216,168,216,167,\n216,170,216,167,217,132,217,132,216,186,216,169,216,170,216,177,216,170,217,138,\n216,168,216,167,217,132,217,134,216,167,216,179,216,167,217,132,216,180,217,138,\n216,174,217,133,217,134,216,170,216,175,217,138,216,167,217,132,216,185,216,177,\n216,168,216,167,217,132,217,130,216,181,216,181,216,167,217,129,217,132,216,167,\n217,133,216,185,217,132,217,138,217,135,216,167,216,170,216,173,216,175,217,138,\n216,171,216,167,217,132,217,132,217,135,217,133,216,167,217,132,216,185,217,133,\n217,132,217,133,217,131,216,170,216,168,216,169,217,138,217,133,217,131,217,134,\n217,131,216,167,217,132,216,183,217,129,217,132,217,129,217,138,216,175,217,138,\n217,136,216,165,216,175,216,167,216,177,216,169,216,170,216,167,216,177,217,138,\n216,174,216,167,217,132,216,181,216,173,216,169,216,170,216,179,216,172,217,138,\n217,132,216,167,217,132,217,136,217,130,216,170,216,185,217,134,216,175,217,133,\n216,167,217,133,216,175,217,138,217,134,216,169,216,170,216,181,217,133,217,138,\n217,133,216,163,216,177,216,180,217,138,217,129,216,167,217,132,216,176,217,138,\n217,134,216,185,216,177,216,168,217,138,216,169,216,168,217,136,216,167,216,168,\n216,169,216,163,217,132,216,185,216,167,216,168,216,167,217,132,216,179,217,129,\n216,177,217,133,216,180,216,167,217,131,217,132,216,170,216,185,216,167,217,132,\n217,137,216,167,217,132,216,163,217,136,217,132,216,167,217,132,216,179,217,134,\n216,169,216,172,216,167,217,133,216,185,216,169,216,167,217,132,216,181,216,173,\n217,129,216,167,217,132,216,175,217,138,217,134,217,131,217,132,217,133,216,167,\n216,170,216,167,217,132,216,174,216,167,216,181,216,167,217,132,217,133,217,132,\n217,129,216,163,216,185,216,182,216,167,216,161,217,131,216,170,216,167,216,168,\n216,169,216,167,217,132,216,174,217,138,216,177,216,177,216,179,216,167,216,166,\n217,132,216,167,217,132,217,130,217,132,216,168,216,167,217,132,216,163,216,175,\n216,168,217,133,217,130,216,167,216,183,216,185,217,133,216,177,216,167,216,179,\n217,132,217,133,217,134,216,183,217,130,216,169,216,167,217,132,217,131,216,170,\n216,168,216,167,217,132,216,177,216,172,217,132,216,167,216,180,216,170,216,177,\n217,131,216,167,217,132,217,130,216,175,217,133,217,138,216,185,216,183,217,138,\n217,131,115,66,121,84,97,103,78,97,109,101,40,46,106,112,103,34,32,97,108,116,61\n,34,49,112,120,32,115,111,108,105,100,32,35,46,103,105,102,34,32,97,108,116,61,\n34,116,114,97,110,115,112,97,114,101,110,116,105,110,102,111,114,109,97,116,105,\n111,110,97,112,112,108,105,99,97,116,105,111,110,34,32,111,110,99,108,105,99,107\n,61,34,101,115,116,97,98,108,105,115,104,101,100,97,100,118,101,114,116,105,115,\n105,110,103,46,112,110,103,34,32,97,108,116,61,34,101,110,118,105,114,111,110,\n109,101,110,116,112,101,114,102,111,114,109,97,110,99,101,97,112,112,114,111,112\n,114,105,97,116,101,38,97,109,112,59,109,100,97,115,104,59,105,109,109,101,100,\n105,97,116,101,108,121,60,47,115,116,114,111,110,103,62,60,47,114,97,116,104,101\n,114,32,116,104,97,110,116,101,109,112,101,114,97,116,117,114,101,100,101,118,\n101,108,111,112,109,101,110,116,99,111,109,112,101,116,105,116,105,111,110,112,\n108,97,99,101,104,111,108,100,101,114,118,105,115,105,98,105,108,105,116,121,58,\n99,111,112,121,114,105,103,104,116,34,62,48,34,32,104,101,105,103,104,116,61,34,\n101,118,101,110,32,116,104,111,117,103,104,114,101,112,108,97,99,101,109,101,110\n,116,100,101,115,116,105,110,97,116,105,111,110,67,111,114,112,111,114,97,116,\n105,111,110,60,117,108,32,99,108,97,115,115,61,34,65,115,115,111,99,105,97,116,\n105,111,110,105,110,100,105,118,105,100,117,97,108,115,112,101,114,115,112,101,\n99,116,105,118,101,115,101,116,84,105,109,101,111,117,116,40,117,114,108,40,104,\n116,116,112,58,47,47,109,97,116,104,101,109,97,116,105,99,115,109,97,114,103,105\n,110,45,116,111,112,58,101,118,101,110,116,117,97,108,108,121,32,100,101,115,99,\n114,105,112,116,105,111,110,41,32,110,111,45,114,101,112,101,97,116,99,111,108,\n108,101,99,116,105,111,110,115,46,74,80,71,124,116,104,117,109,98,124,112,97,114\n,116,105,99,105,112,97,116,101,47,104,101,97,100,62,60,98,111,100,121,102,108,\n111,97,116,58,108,101,102,116,59,60,108,105,32,99,108,97,115,115,61,34,104,117,\n110,100,114,101,100,115,32,111,102,10,10,72,111,119,101,118,101,114,44,32,99,111\n,109,112,111,115,105,116,105,111,110,99,108,101,97,114,58,98,111,116,104,59,99,\n111,111,112,101,114,97,116,105,111,110,119,105,116,104,105,110,32,116,104,101,32\n,108,97,98,101,108,32,102,111,114,61,34,98,111,114,100,101,114,45,116,111,112,58\n,78,101,119,32,90,101,97,108,97,110,100,114,101,99,111,109,109,101,110,100,101,\n100,112,104,111,116,111,103,114,97,112,104,121,105,110,116,101,114,101,115,116,\n105,110,103,38,108,116,59,115,117,112,38,103,116,59,99,111,110,116,114,111,118,\n101,114,115,121,78,101,116,104,101,114,108,97,110,100,115,97,108,116,101,114,110\n,97,116,105,118,101,109,97,120,108,101,110,103,116,104,61,34,115,119,105,116,122\n,101,114,108,97,110,100,68,101,118,101,108,111,112,109,101,110,116,101,115,115,\n101,110,116,105,97,108,108,121,10,10,65,108,116,104,111,117,103,104,32,60,47,116\n,101,120,116,97,114,101,97,62,116,104,117,110,100,101,114,98,105,114,100,114,101\n,112,114,101,115,101,110,116,101,100,38,97,109,112,59,110,100,97,115,104,59,115,\n112,101,99,117,108,97,116,105,111,110,99,111,109,109,117,110,105,116,105,101,115\n,108,101,103,105,115,108,97,116,105,111,110,101,108,101,99,116,114,111,110,105,\n99,115,10,9,60,100,105,118,32,105,100,61,34,105,108,108,117,115,116,114,97,116,\n101,100,101,110,103,105,110,101,101,114,105,110,103,116,101,114,114,105,116,111,\n114,105,101,115,97,117,116,104,111,114,105,116,105,101,115,100,105,115,116,114,\n105,98,117,116,101,100,54,34,32,104,101,105,103,104,116,61,34,115,97,110,115,45,\n115,101,114,105,102,59,99,97,112,97,98,108,101,32,111,102,32,100,105,115,97,112,\n112,101,97,114,101,100,105,110,116,101,114,97,99,116,105,118,101,108,111,111,107\n,105,110,103,32,102,111,114,105,116,32,119,111,117,108,100,32,98,101,65,102,103,\n104,97,110,105,115,116,97,110,119,97,115,32,99,114,101,97,116,101,100,77,97,116,\n104,46,102,108,111,111,114,40,115,117,114,114,111,117,110,100,105,110,103,99,97,\n110,32,97,108,115,111,32,98,101,111,98,115,101,114,118,97,116,105,111,110,109,97\n,105,110,116,101,110,97,110,99,101,101,110,99,111,117,110,116,101,114,101,100,60\n,104,50,32,99,108,97,115,115,61,34,109,111,114,101,32,114,101,99,101,110,116,105\n,116,32,104,97,115,32,98,101,101,110,105,110,118,97,115,105,111,110,32,111,102,\n41,46,103,101,116,84,105,109,101,40,41,102,117,110,100,97,109,101,110,116,97,108\n,68,101,115,112,105,116,101,32,116,104,101,34,62,60,100,105,118,32,105,100,61,34\n,105,110,115,112,105,114,97,116,105,111,110,101,120,97,109,105,110,97,116,105,\n111,110,112,114,101,112,97,114,97,116,105,111,110,101,120,112,108,97,110,97,116,\n105,111,110,60,105,110,112,117,116,32,105,100,61,34,60,47,97,62,60,47,115,112,97\n,110,62,118,101,114,115,105,111,110,115,32,111,102,105,110,115,116,114,117,109,\n101,110,116,115,98,101,102,111,114,101,32,116,104,101,32,32,61,32,39,104,116,116\n,112,58,47,47,68,101,115,99,114,105,112,116,105,111,110,114,101,108,97,116,105,\n118,101,108,121,32,46,115,117,98,115,116,114,105,110,103,40,101,97,99,104,32,111\n,102,32,116,104,101,101,120,112,101,114,105,109,101,110,116,115,105,110,102,108,\n117,101,110,116,105,97,108,105,110,116,101,103,114,97,116,105,111,110,109,97,110\n,121,32,112,101,111,112,108,101,100,117,101,32,116,111,32,116,104,101,32,99,111,\n109,98,105,110,97,116,105,111,110,100,111,32,110,111,116,32,104,97,118,101,77,\n105,100,100,108,101,32,69,97,115,116,60,110,111,115,99,114,105,112,116,62,60,99,\n111,112,121,114,105,103,104,116,34,32,112,101,114,104,97,112,115,32,116,104,101,\n105,110,115,116,105,116,117,116,105,111,110,105,110,32,68,101,99,101,109,98,101,\n114,97,114,114,97,110,103,101,109,101,110,116,109,111,115,116,32,102,97,109,111,\n117,115,112,101,114,115,111,110,97,108,105,116,121,99,114,101,97,116,105,111,110\n,32,111,102,108,105,109,105,116,97,116,105,111,110,115,101,120,99,108,117,115,\n105,118,101,108,121,115,111,118,101,114,101,105,103,110,116,121,45,99,111,110,\n116,101,110,116,34,62,10,60,116,100,32,99,108,97,115,115,61,34,117,110,100,101,\n114,103,114,111,117,110,100,112,97,114,97,108,108,101,108,32,116,111,100,111,99,\n116,114,105,110,101,32,111,102,111,99,99,117,112,105,101,100,32,98,121,116,101,\n114,109,105,110,111,108,111,103,121,82,101,110,97,105,115,115,97,110,99,101,97,\n32,110,117,109,98,101,114,32,111,102,115,117,112,112,111,114,116,32,102,111,114,\n101,120,112,108,111,114,97,116,105,111,110,114,101,99,111,103,110,105,116,105,\n111,110,112,114,101,100,101,99,101,115,115,111,114,60,105,109,103,32,115,114,99,\n61,34,47,60,104,49,32,99,108,97,115,115,61,34,112,117,98,108,105,99,97,116,105,\n111,110,109,97,121,32,97,108,115,111,32,98,101,115,112,101,99,105,97,108,105,122\n,101,100,60,47,102,105,101,108,100,115,101,116,62,112,114,111,103,114,101,115,\n115,105,118,101,109,105,108,108,105,111,110,115,32,111,102,115,116,97,116,101,\n115,32,116,104,97,116,101,110,102,111,114,99,101,109,101,110,116,97,114,111,117,\n110,100,32,116,104,101,32,111,110,101,32,97,110,111,116,104,101,114,46,112,97,\n114,101,110,116,78,111,100,101,97,103,114,105,99,117,108,116,117,114,101,65,108,\n116,101,114,110,97,116,105,118,101,114,101,115,101,97,114,99,104,101,114,115,116\n,111,119,97,114,100,115,32,116,104,101,77,111,115,116,32,111,102,32,116,104,101,\n109,97,110,121,32,111,116,104,101,114,32,40,101,115,112,101,99,105,97,108,108,\n121,60,116,100,32,119,105,100,116,104,61,34,59,119,105,100,116,104,58,49,48,48,\n37,105,110,100,101,112,101,110,100,101,110,116,60,104,51,32,99,108,97,115,115,61\n,34,32,111,110,99,104,97,110,103,101,61,34,41,46,97,100,100,67,108,97,115,115,40\n,105,110,116,101,114,97,99,116,105,111,110,79,110,101,32,111,102,32,116,104,101,\n32,100,97,117,103,104,116,101,114,32,111,102,97,99,99,101,115,115,111,114,105,\n101,115,98,114,97,110,99,104,101,115,32,111,102,13,10,60,100,105,118,32,105,100,\n61,34,116,104,101,32,108,97,114,103,101,115,116,100,101,99,108,97,114,97,116,105\n,111,110,114,101,103,117,108,97,116,105,111,110,115,73,110,102,111,114,109,97,\n116,105,111,110,116,114,97,110,115,108,97,116,105,111,110,100,111,99,117,109,101\n,110,116,97,114,121,105,110,32,111,114,100,101,114,32,116,111,34,62,10,60,104,\n101,97,100,62,10,60,34,32,104,101,105,103,104,116,61,34,49,97,99,114,111,115,115\n,32,116,104,101,32,111,114,105,101,110,116,97,116,105,111,110,41,59,60,47,115,99\n,114,105,112,116,62,105,109,112,108,101,109,101,110,116,101,100,99,97,110,32,98,\n101,32,115,101,101,110,116,104,101,114,101,32,119,97,115,32,97,100,101,109,111,\n110,115,116,114,97,116,101,99,111,110,116,97,105,110,101,114,34,62,99,111,110,\n110,101,99,116,105,111,110,115,116,104,101,32,66,114,105,116,105,115,104,119,97,\n115,32,119,114,105,116,116,101,110,33,105,109,112,111,114,116,97,110,116,59,112,\n120,59,32,109,97,114,103,105,110,45,102,111,108,108,111,119,101,100,32,98,121,97\n,98,105,108,105,116,121,32,116,111,32,99,111,109,112,108,105,99,97,116,101,100,\n100,117,114,105,110,103,32,116,104,101,32,105,109,109,105,103,114,97,116,105,111\n,110,97,108,115,111,32,99,97,108,108,101,100,60,104,52,32,99,108,97,115,115,61,\n34,100,105,115,116,105,110,99,116,105,111,110,114,101,112,108,97,99,101,100,32,\n98,121,103,111,118,101,114,110,109,101,110,116,115,108,111,99,97,116,105,111,110\n,32,111,102,105,110,32,78,111,118,101,109,98,101,114,119,104,101,116,104,101,114\n,32,116,104,101,60,47,112,62,10,60,47,100,105,118,62,97,99,113,117,105,115,105,\n116,105,111,110,99,97,108,108,101,100,32,116,104,101,32,112,101,114,115,101,99,\n117,116,105,111,110,100,101,115,105,103,110,97,116,105,111,110,123,102,111,110,\n116,45,115,105,122,101,58,97,112,112,101,97,114,101,100,32,105,110,105,110,118,\n101,115,116,105,103,97,116,101,101,120,112,101,114,105,101,110,99,101,100,109,\n111,115,116,32,108,105,107,101,108,121,119,105,100,101,108,121,32,117,115,101,\n100,100,105,115,99,117,115,115,105,111,110,115,112,114,101,115,101,110,99,101,32\n,111,102,32,40,100,111,99,117,109,101,110,116,46,101,120,116,101,110,115,105,118\n,101,108,121,73,116,32,104,97,115,32,98,101,101,110,105,116,32,100,111,101,115,\n32,110,111,116,99,111,110,116,114,97,114,121,32,116,111,105,110,104,97,98,105,\n116,97,110,116,115,105,109,112,114,111,118,101,109,101,110,116,115,99,104,111,\n108,97,114,115,104,105,112,99,111,110,115,117,109,112,116,105,111,110,105,110,\n115,116,114,117,99,116,105,111,110,102,111,114,32,101,120,97,109,112,108,101,111\n,110,101,32,111,114,32,109,111,114,101,112,120,59,32,112,97,100,100,105,110,103,\n116,104,101,32,99,117,114,114,101,110,116,97,32,115,101,114,105,101,115,32,111,\n102,97,114,101,32,117,115,117,97,108,108,121,114,111,108,101,32,105,110,32,116,\n104,101,112,114,101,118,105,111,117,115,108,121,32,100,101,114,105,118,97,116,\n105,118,101,115,101,118,105,100,101,110,99,101,32,111,102,101,120,112,101,114,\n105,101,110,99,101,115,99,111,108,111,114,115,99,104,101,109,101,115,116,97,116,\n101,100,32,116,104,97,116,99,101,114,116,105,102,105,99,97,116,101,60,47,97,62,\n60,47,100,105,118,62,10,32,115,101,108,101,99,116,101,100,61,34,104,105,103,104,\n32,115,99,104,111,111,108,114,101,115,112,111,110,115,101,32,116,111,99,111,109,\n102,111,114,116,97,98,108,101,97,100,111,112,116,105,111,110,32,111,102,116,104,\n114,101,101,32,121,101,97,114,115,116,104,101,32,99,111,117,110,116,114,121,105,\n110,32,70,101,98,114,117,97,114,121,115,111,32,116,104,97,116,32,116,104,101,112\n,101,111,112,108,101,32,119,104,111,32,112,114,111,118,105,100,101,100,32,98,121\n,60,112,97,114,97,109,32,110,97,109,101,97,102,102,101,99,116,101,100,32,98,121,\n105,110,32,116,101,114,109,115,32,111,102,97,112,112,111,105,110,116,109,101,110\n,116,73,83,79,45,56,56,53,57,45,49,34,119,97,115,32,98,111,114,110,32,105,110,\n104,105,115,116,111,114,105,99,97,108,32,114,101,103,97,114,100,101,100,32,97,\n115,109,101,97,115,117,114,101,109,101,110,116,105,115,32,98,97,115,101,100,32,\n111,110,32,97,110,100,32,111,116,104,101,114,32,58,32,102,117,110,99,116,105,111\n,110,40,115,105,103,110,105,102,105,99,97,110,116,99,101,108,101,98,114,97,116,\n105,111,110,116,114,97,110,115,109,105,116,116,101,100,47,106,115,47,106,113,117\n,101,114,121,46,105,115,32,107,110,111,119,110,32,97,115,116,104,101,111,114,101\n,116,105,99,97,108,32,116,97,98,105,110,100,101,120,61,34,105,116,32,99,111,117,\n108,100,32,98,101,60,110,111,115,99,114,105,112,116,62,10,104,97,118,105,110,103\n,32,98,101,101,110,13,10,60,104,101,97,100,62,13,10,60,32,38,113,117,111,116,59,\n84,104,101,32,99,111,109,112,105,108,97,116,105,111,110,104,101,32,104,97,100,32\n,98,101,101,110,112,114,111,100,117,99,101,100,32,98,121,112,104,105,108,111,115\n,111,112,104,101,114,99,111,110,115,116,114,117,99,116,101,100,105,110,116,101,\n110,100,101,100,32,116,111,97,109,111,110,103,32,111,116,104,101,114,99,111,109,\n112,97,114,101,100,32,116,111,116,111,32,115,97,121,32,116,104,97,116,69,110,103\n,105,110,101,101,114,105,110,103,97,32,100,105,102,102,101,114,101,110,116,114,\n101,102,101,114,114,101,100,32,116,111,100,105,102,102,101,114,101,110,99,101,\n115,98,101,108,105,101,102,32,116,104,97,116,112,104,111,116,111,103,114,97,112,\n104,115,105,100,101,110,116,105,102,121,105,110,103,72,105,115,116,111,114,121,\n32,111,102,32,82,101,112,117,98,108,105,99,32,111,102,110,101,99,101,115,115,97,\n114,105,108,121,112,114,111,98,97,98,105,108,105,116,121,116,101,99,104,110,105,\n99,97,108,108,121,108,101,97,118,105,110,103,32,116,104,101,115,112,101,99,116,\n97,99,117,108,97,114,102,114,97,99,116,105,111,110,32,111,102,101,108,101,99,116\n,114,105,99,105,116,121,104,101,97,100,32,111,102,32,116,104,101,114,101,115,116\n,97,117,114,97,110,116,115,112,97,114,116,110,101,114,115,104,105,112,101,109,\n112,104,97,115,105,115,32,111,110,109,111,115,116,32,114,101,99,101,110,116,115,\n104,97,114,101,32,119,105,116,104,32,115,97,121,105,110,103,32,116,104,97,116,\n102,105,108,108,101,100,32,119,105,116,104,100,101,115,105,103,110,101,100,32,\n116,111,105,116,32,105,115,32,111,102,116,101,110,34,62,60,47,105,102,114,97,109\n,101,62,97,115,32,102,111,108,108,111,119,115,58,109,101,114,103,101,100,32,119,\n105,116,104,116,104,114,111,117,103,104,32,116,104,101,99,111,109,109,101,114,99\n,105,97,108,32,112,111,105,110,116,101,100,32,111,117,116,111,112,112,111,114,\n116,117,110,105,116,121,118,105,101,119,32,111,102,32,116,104,101,114,101,113,\n117,105,114,101,109,101,110,116,100,105,118,105,115,105,111,110,32,111,102,112,\n114,111,103,114,97,109,109,105,110,103,104,101,32,114,101,99,101,105,118,101,100\n,115,101,116,73,110,116,101,114,118,97,108,34,62,60,47,115,112,97,110,62,60,47,\n105,110,32,78,101,119,32,89,111,114,107,97,100,100,105,116,105,111,110,97,108,32\n,99,111,109,112,114,101,115,115,105,111,110,10,10,60,100,105,118,32,105,100,61,\n34,105,110,99,111,114,112,111,114,97,116,101,59,60,47,115,99,114,105,112,116,62,\n60,97,116,116,97,99,104,69,118,101,110,116,98,101,99,97,109,101,32,116,104,101,\n32,34,32,116,97,114,103,101,116,61,34,95,99,97,114,114,105,101,100,32,111,117,\n116,83,111,109,101,32,111,102,32,116,104,101,115,99,105,101,110,99,101,32,97,110\n,100,116,104,101,32,116,105,109,101,32,111,102,67,111,110,116,97,105,110,101,114\n,34,62,109,97,105,110,116,97,105,110,105,110,103,67,104,114,105,115,116,111,112,\n104,101,114,77,117,99,104,32,111,102,32,116,104,101,119,114,105,116,105,110,103,\n115,32,111,102,34,32,104,101,105,103,104,116,61,34,50,115,105,122,101,32,111,102\n,32,116,104,101,118,101,114,115,105,111,110,32,111,102,32,109,105,120,116,117,\n114,101,32,111,102,32,98,101,116,119,101,101,110,32,116,104,101,69,120,97,109,\n112,108,101,115,32,111,102,101,100,117,99,97,116,105,111,110,97,108,99,111,109,\n112,101,116,105,116,105,118,101,32,111,110,115,117,98,109,105,116,61,34,100,105,\n114,101,99,116,111,114,32,111,102,100,105,115,116,105,110,99,116,105,118,101,47,\n68,84,68,32,88,72,84,77,76,32,114,101,108,97,116,105,110,103,32,116,111,116,101,\n110,100,101,110,99,121,32,116,111,112,114,111,118,105,110,99,101,32,111,102,119,\n104,105,99,104,32,119,111,117,108,100,100,101,115,112,105,116,101,32,116,104,101\n,115,99,105,101,110,116,105,102,105,99,32,108,101,103,105,115,108,97,116,117,114\n,101,46,105,110,110,101,114,72,84,77,76,32,97,108,108,101,103,97,116,105,111,110\n,115,65,103,114,105,99,117,108,116,117,114,101,119,97,115,32,117,115,101,100,32,\n105,110,97,112,112,114,111,97,99,104,32,116,111,105,110,116,101,108,108,105,103,\n101,110,116,121,101,97,114,115,32,108,97,116,101,114,44,115,97,110,115,45,115,\n101,114,105,102,100,101,116,101,114,109,105,110,105,110,103,80,101,114,102,111,\n114,109,97,110,99,101,97,112,112,101,97,114,97,110,99,101,115,44,32,119,104,105,\n99,104,32,105,115,32,102,111,117,110,100,97,116,105,111,110,115,97,98,98,114,101\n,118,105,97,116,101,100,104,105,103,104,101,114,32,116,104,97,110,115,32,102,114\n,111,109,32,116,104,101,32,105,110,100,105,118,105,100,117,97,108,32,99,111,109,\n112,111,115,101,100,32,111,102,115,117,112,112,111,115,101,100,32,116,111,99,108\n,97,105,109,115,32,116,104,97,116,97,116,116,114,105,98,117,116,105,111,110,102,\n111,110,116,45,115,105,122,101,58,49,101,108,101,109,101,110,116,115,32,111,102,\n72,105,115,116,111,114,105,99,97,108,32,104,105,115,32,98,114,111,116,104,101,\n114,97,116,32,116,104,101,32,116,105,109,101,97,110,110,105,118,101,114,115,97,\n114,121,103,111,118,101,114,110,101,100,32,98,121,114,101,108,97,116,101,100,32,\n116,111,32,117,108,116,105,109,97,116,101,108,121,32,105,110,110,111,118,97,116,\n105,111,110,115,105,116,32,105,115,32,115,116,105,108,108,99,97,110,32,111,110,\n108,121,32,98,101,100,101,102,105,110,105,116,105,111,110,115,116,111,71,77,84,\n83,116,114,105,110,103,65,32,110,117,109,98,101,114,32,111,102,105,109,103,32,99\n,108,97,115,115,61,34,69,118,101,110,116,117,97,108,108,121,44,119,97,115,32,99,\n104,97,110,103,101,100,111,99,99,117,114,114,101,100,32,105,110,110,101,105,103,\n104,98,111,114,105,110,103,100,105,115,116,105,110,103,117,105,115,104,119,104,\n101,110,32,104,101,32,119,97,115,105,110,116,114,111,100,117,99,105,110,103,116,\n101,114,114,101,115,116,114,105,97,108,77,97,110,121,32,111,102,32,116,104,101,\n97,114,103,117,101,115,32,116,104,97,116,97,110,32,65,109,101,114,105,99,97,110,\n99,111,110,113,117,101,115,116,32,111,102,119,105,100,101,115,112,114,101,97,100\n,32,119,101,114,101,32,107,105,108,108,101,100,115,99,114,101,101,110,32,97,110,\n100,32,73,110,32,111,114,100,101,114,32,116,111,101,120,112,101,99,116,101,100,\n32,116,111,100,101,115,99,101,110,100,97,110,116,115,97,114,101,32,108,111,99,97\n,116,101,100,108,101,103,105,115,108,97,116,105,118,101,103,101,110,101,114,97,\n116,105,111,110,115,32,98,97,99,107,103,114,111,117,110,100,109,111,115,116,32,\n112,101,111,112,108,101,121,101,97,114,115,32,97,102,116,101,114,116,104,101,114\n,101,32,105,115,32,110,111,116,104,101,32,104,105,103,104,101,115,116,102,114,\n101,113,117,101,110,116,108,121,32,116,104,101,121,32,100,111,32,110,111,116,97,\n114,103,117,101,100,32,116,104,97,116,115,104,111,119,101,100,32,116,104,97,116,\n112,114,101,100,111,109,105,110,97,110,116,116,104,101,111,108,111,103,105,99,97\n,108,98,121,32,116,104,101,32,116,105,109,101,99,111,110,115,105,100,101,114,105\n,110,103,115,104,111,114,116,45,108,105,118,101,100,60,47,115,112,97,110,62,60,\n47,97,62,99,97,110,32,98,101,32,117,115,101,100,118,101,114,121,32,108,105,116,\n116,108,101,111,110,101,32,111,102,32,116,104,101,32,104,97,100,32,97,108,114,\n101,97,100,121,105,110,116,101,114,112,114,101,116,101,100,99,111,109,109,117,\n110,105,99,97,116,101,102,101,97,116,117,114,101,115,32,111,102,103,111,118,101,\n114,110,109,101,110,116,44,60,47,110,111,115,99,114,105,112,116,62,101,110,116,\n101,114,101,100,32,116,104,101,34,32,104,101,105,103,104,116,61,34,51,73,110,100\n,101,112,101,110,100,101,110,116,112,111,112,117,108,97,116,105,111,110,115,108,\n97,114,103,101,45,115,99,97,108,101,46,32,65,108,116,104,111,117,103,104,32,117,\n115,101,100,32,105,110,32,116,104,101,100,101,115,116,114,117,99,116,105,111,110\n,112,111,115,115,105,98,105,108,105,116,121,115,116,97,114,116,105,110,103,32,\n105,110,116,119,111,32,111,114,32,109,111,114,101,101,120,112,114,101,115,115,\n105,111,110,115,115,117,98,111,114,100,105,110,97,116,101,108,97,114,103,101,114\n,32,116,104,97,110,104,105,115,116,111,114,121,32,97,110,100,60,47,111,112,116,\n105,111,110,62,13,10,67,111,110,116,105,110,101,110,116,97,108,101,108,105,109,\n105,110,97,116,105,110,103,119,105,108,108,32,110,111,116,32,98,101,112,114,97,\n99,116,105,99,101,32,111,102,105,110,32,102,114,111,110,116,32,111,102,115,105,\n116,101,32,111,102,32,116,104,101,101,110,115,117,114,101,32,116,104,97,116,116,\n111,32,99,114,101,97,116,101,32,97,109,105,115,115,105,115,115,105,112,112,105,\n112,111,116,101,110,116,105,97,108,108,121,111,117,116,115,116,97,110,100,105,\n110,103,98,101,116,116,101,114,32,116,104,97,110,119,104,97,116,32,105,115,32,\n110,111,119,115,105,116,117,97,116,101,100,32,105,110,109,101,116,97,32,110,97,\n109,101,61,34,84,114,97,100,105,116,105,111,110,97,108,115,117,103,103,101,115,\n116,105,111,110,115,84,114,97,110,115,108,97,116,105,111,110,116,104,101,32,102,\n111,114,109,32,111,102,97,116,109,111,115,112,104,101,114,105,99,105,100,101,111\n,108,111,103,105,99,97,108,101,110,116,101,114,112,114,105,115,101,115,99,97,108\n,99,117,108,97,116,105,110,103,101,97,115,116,32,111,102,32,116,104,101,114,101,\n109,110,97,110,116,115,32,111,102,112,108,117,103,105,110,115,112,97,103,101,47,\n105,110,100,101,120,46,112,104,112,63,114,101,109,97,105,110,101,100,32,105,110,\n116,114,97,110,115,102,111,114,109,101,100,72,101,32,119,97,115,32,97,108,115,\n111,119,97,115,32,97,108,114,101,97,100,121,115,116,97,116,105,115,116,105,99,97\n,108,105,110,32,102,97,118,111,114,32,111,102,77,105,110,105,115,116,114,121,32,\n111,102,109,111,118,101,109,101,110,116,32,111,102,102,111,114,109,117,108,97,\n116,105,111,110,105,115,32,114,101,113,117,105,114,101,100,60,108,105,110,107,32\n,114,101,108,61,34,84,104,105,115,32,105,115,32,116,104,101,32,60,97,32,104,114,\n101,102,61,34,47,112,111,112,117,108,97,114,105,122,101,100,105,110,118,111,108,\n118,101,100,32,105,110,97,114,101,32,117,115,101,100,32,116,111,97,110,100,32,\n115,101,118,101,114,97,108,109,97,100,101,32,98,121,32,116,104,101,115,101,101,\n109,115,32,116,111,32,98,101,108,105,107,101,108,121,32,116,104,97,116,80,97,108\n,101,115,116,105,110,105,97,110,110,97,109,101,100,32,97,102,116,101,114,105,116\n,32,104,97,100,32,98,101,101,110,109,111,115,116,32,99,111,109,109,111,110,116,\n111,32,114,101,102,101,114,32,116,111,98,117,116,32,116,104,105,115,32,105,115,\n99,111,110,115,101,99,117,116,105,118,101,116,101,109,112,111,114,97,114,105,108\n,121,73,110,32,103,101,110,101,114,97,108,44,99,111,110,118,101,110,116,105,111,\n110,115,116,97,107,101,115,32,112,108,97,99,101,115,117,98,100,105,118,105,115,\n105,111,110,116,101,114,114,105,116,111,114,105,97,108,111,112,101,114,97,116,\n105,111,110,97,108,112,101,114,109,97,110,101,110,116,108,121,119,97,115,32,108,\n97,114,103,101,108,121,111,117,116,98,114,101,97,107,32,111,102,105,110,32,116,\n104,101,32,112,97,115,116,102,111,108,108,111,119,105,110,103,32,97,32,120,109,\n108,110,115,58,111,103,61,34,62,60,97,32,99,108,97,115,115,61,34,99,108,97,115,\n115,61,34,116,101,120,116,67,111,110,118,101,114,115,105,111,110,32,109,97,121,\n32,98,101,32,117,115,101,100,109,97,110,117,102,97,99,116,117,114,101,97,102,116\n,101,114,32,98,101,105,110,103,99,108,101,97,114,102,105,120,34,62,10,113,117,\n101,115,116,105,111,110,32,111,102,119,97,115,32,101,108,101,99,116,101,100,116,\n111,32,98,101,99,111,109,101,32,97,98,101,99,97,117,115,101,32,111,102,32,115,\n111,109,101,32,112,101,111,112,108,101,105,110,115,112,105,114,101,100,32,98,121\n,115,117,99,99,101,115,115,102,117,108,32,97,32,116,105,109,101,32,119,104,101,\n110,109,111,114,101,32,99,111,109,109,111,110,97,109,111,110,103,115,116,32,116,\n104,101,97,110,32,111,102,102,105,99,105,97,108,119,105,100,116,104,58,49,48,48,\n37,59,116,101,99,104,110,111,108,111,103,121,44,119,97,115,32,97,100,111,112,116\n,101,100,116,111,32,107,101,101,112,32,116,104,101,115,101,116,116,108,101,109,\n101,110,116,115,108,105,118,101,32,98,105,114,116,104,115,105,110,100,101,120,46\n,104,116,109,108,34,67,111,110,110,101,99,116,105,99,117,116,97,115,115,105,103,\n110,101,100,32,116,111,38,97,109,112,59,116,105,109,101,115,59,97,99,99,111,117,\n110,116,32,102,111,114,97,108,105,103,110,61,114,105,103,104,116,116,104,101,32,\n99,111,109,112,97,110,121,97,108,119,97,121,115,32,98,101,101,110,114,101,116,\n117,114,110,101,100,32,116,111,105,110,118,111,108,118,101,109,101,110,116,66,\n101,99,97,117,115,101,32,116,104,101,116,104,105,115,32,112,101,114,105,111,100,\n34,32,110,97,109,101,61,34,113,34,32,99,111,110,102,105,110,101,100,32,116,111,\n97,32,114,101,115,117,108,116,32,111,102,118,97,108,117,101,61,34,34,32,47,62,\n105,115,32,97,99,116,117,97,108,108,121,69,110,118,105,114,111,110,109,101,110,\n116,13,10,60,47,104,101,97,100,62,13,10,67,111,110,118,101,114,115,101,108,121,\n44,62,10,60,100,105,118,32,105,100,61,34,48,34,32,119,105,100,116,104,61,34,49,\n105,115,32,112,114,111,98,97,98,108,121,104,97,118,101,32,98,101,99,111,109,101,\n99,111,110,116,114,111,108,108,105,110,103,116,104,101,32,112,114,111,98,108,101\n,109,99,105,116,105,122,101,110,115,32,111,102,112,111,108,105,116,105,99,105,97\n,110,115,114,101,97,99,104,101,100,32,116,104,101,97,115,32,101,97,114,108,121,\n32,97,115,58,110,111,110,101,59,32,111,118,101,114,60,116,97,98,108,101,32,99,\n101,108,108,118,97,108,105,100,105,116,121,32,111,102,100,105,114,101,99,116,108\n,121,32,116,111,111,110,109,111,117,115,101,100,111,119,110,119,104,101,114,101,\n32,105,116,32,105,115,119,104,101,110,32,105,116,32,119,97,115,109,101,109,98,\n101,114,115,32,111,102,32,114,101,108,97,116,105,111,110,32,116,111,97,99,99,111\n,109,109,111,100,97,116,101,97,108,111,110,103,32,119,105,116,104,32,73,110,32,\n116,104,101,32,108,97,116,101,116,104,101,32,69,110,103,108,105,115,104,100,101,\n108,105,99,105,111,117,115,34,62,116,104,105,115,32,105,115,32,110,111,116,116,\n104,101,32,112,114,101,115,101,110,116,105,102,32,116,104,101,121,32,97,114,101,\n97,110,100,32,102,105,110,97,108,108,121,97,32,109,97,116,116,101,114,32,111,102\n,13,10,9,60,47,100,105,118,62,13,10,13,10,60,47,115,99,114,105,112,116,62,102,97\n,115,116,101,114,32,116,104,97,110,109,97,106,111,114,105,116,121,32,111,102,97,\n102,116,101,114,32,119,104,105,99,104,99,111,109,112,97,114,97,116,105,118,101,\n116,111,32,109,97,105,110,116,97,105,110,105,109,112,114,111,118,101,32,116,104,\n101,97,119,97,114,100,101,100,32,116,104,101,101,114,34,32,99,108,97,115,115,61,\n34,102,114,97,109,101,98,111,114,100,101,114,114,101,115,116,111,114,97,116,105,\n111,110,105,110,32,116,104,101,32,115,97,109,101,97,110,97,108,121,115,105,115,\n32,111,102,116,104,101,105,114,32,102,105,114,115,116,68,117,114,105,110,103,32,\n116,104,101,32,99,111,110,116,105,110,101,110,116,97,108,115,101,113,117,101,110\n,99,101,32,111,102,102,117,110,99,116,105,111,110,40,41,123,102,111,110,116,45,\n115,105,122,101,58,32,119,111,114,107,32,111,110,32,116,104,101,60,47,115,99,114\n,105,112,116,62,10,60,98,101,103,105,110,115,32,119,105,116,104,106,97,118,97,\n115,99,114,105,112,116,58,99,111,110,115,116,105,116,117,101,110,116,119,97,115,\n32,102,111,117,110,100,101,100,101,113,117,105,108,105,98,114,105,117,109,97,115\n,115,117,109,101,32,116,104,97,116,105,115,32,103,105,118,101,110,32,98,121,110,\n101,101,100,115,32,116,111,32,98,101,99,111,111,114,100,105,110,97,116,101,115,\n116,104,101,32,118,97,114,105,111,117,115,97,114,101,32,112,97,114,116,32,111,\n102,111,110,108,121,32,105,110,32,116,104,101,115,101,99,116,105,111,110,115,32,\n111,102,105,115,32,97,32,99,111,109,109,111,110,116,104,101,111,114,105,101,115,\n32,111,102,100,105,115,99,111,118,101,114,105,101,115,97,115,115,111,99,105,97,\n116,105,111,110,101,100,103,101,32,111,102,32,116,104,101,115,116,114,101,110,\n103,116,104,32,111,102,112,111,115,105,116,105,111,110,32,105,110,112,114,101,\n115,101,110,116,45,100,97,121,117,110,105,118,101,114,115,97,108,108,121,116,111\n,32,102,111,114,109,32,116,104,101,98,117,116,32,105,110,115,116,101,97,100,99,\n111,114,112,111,114,97,116,105,111,110,97,116,116,97,99,104,101,100,32,116,111,\n105,115,32,99,111,109,109,111,110,108,121,114,101,97,115,111,110,115,32,102,111,\n114,32,38,113,117,111,116,59,116,104,101,32,99,97,110,32,98,101,32,109,97,100,\n101,119,97,115,32,97,98,108,101,32,116,111,119,104,105,99,104,32,109,101,97,110,\n115,98,117,116,32,100,105,100,32,110,111,116,111,110,77,111,117,115,101,79,118,\n101,114,97,115,32,112,111,115,115,105,98,108,101,111,112,101,114,97,116,101,100,\n32,98,121,99,111,109,105,110,103,32,102,114,111,109,116,104,101,32,112,114,105,\n109,97,114,121,97,100,100,105,116,105,111,110,32,111,102,102,111,114,32,115,101,\n118,101,114,97,108,116,114,97,110,115,102,101,114,114,101,100,97,32,112,101,114,\n105,111,100,32,111,102,97,114,101,32,97,98,108,101,32,116,111,104,111,119,101,\n118,101,114,44,32,105,116,115,104,111,117,108,100,32,104,97,118,101,109,117,99,\n104,32,108,97,114,103,101,114,10,9,60,47,115,99,114,105,112,116,62,97,100,111,\n112,116,101,100,32,116,104,101,112,114,111,112,101,114,116,121,32,111,102,100,\n105,114,101,99,116,101,100,32,98,121,101,102,102,101,99,116,105,118,101,108,121,\n119,97,115,32,98,114,111,117,103,104,116,99,104,105,108,100,114,101,110,32,111,\n102,80,114,111,103,114,97,109,109,105,110,103,108,111,110,103,101,114,32,116,104\n,97,110,109,97,110,117,115,99,114,105,112,116,115,119,97,114,32,97,103,97,105,\n110,115,116,98,121,32,109,101,97,110,115,32,111,102,97,110,100,32,109,111,115,\n116,32,111,102,115,105,109,105,108,97,114,32,116,111,32,112,114,111,112,114,105,\n101,116,97,114,121,111,114,105,103,105,110,97,116,105,110,103,112,114,101,115,\n116,105,103,105,111,117,115,103,114,97,109,109,97,116,105,99,97,108,101,120,112,\n101,114,105,101,110,99,101,46,116,111,32,109,97,107,101,32,116,104,101,73,116,32\n,119,97,115,32,97,108,115,111,105,115,32,102,111,117,110,100,32,105,110,99,111,\n109,112,101,116,105,116,111,114,115,105,110,32,116,104,101,32,85,46,83,46,114,\n101,112,108,97,99,101,32,116,104,101,98,114,111,117,103,104,116,32,116,104,101,\n99,97,108,99,117,108,97,116,105,111,110,102,97,108,108,32,111,102,32,116,104,101\n,116,104,101,32,103,101,110,101,114,97,108,112,114,97,99,116,105,99,97,108,108,\n121,105,110,32,104,111,110,111,114,32,111,102,114,101,108,101,97,115,101,100,32,\n105,110,114,101,115,105,100,101,110,116,105,97,108,97,110,100,32,115,111,109,101\n,32,111,102,107,105,110,103,32,111,102,32,116,104,101,114,101,97,99,116,105,111,\n110,32,116,111,49,115,116,32,69,97,114,108,32,111,102,99,117,108,116,117,114,101\n,32,97,110,100,112,114,105,110,99,105,112,97,108,108,121,60,47,116,105,116,108,\n101,62,10,32,32,116,104,101,121,32,99,97,110,32,98,101,98,97,99,107,32,116,111,\n32,116,104,101,115,111,109,101,32,111,102,32,104,105,115,101,120,112,111,115,117\n,114,101,32,116,111,97,114,101,32,115,105,109,105,108,97,114,102,111,114,109,32,\n111,102,32,116,104,101,97,100,100,70,97,118,111,114,105,116,101,99,105,116,105,\n122,101,110,115,104,105,112,112,97,114,116,32,105,110,32,116,104,101,112,101,111\n,112,108,101,32,119,105,116,104,105,110,32,112,114,97,99,116,105,99,101,116,111,\n32,99,111,110,116,105,110,117,101,38,97,109,112,59,109,105,110,117,115,59,97,112\n,112,114,111,118,101,100,32,98,121,32,116,104,101,32,102,105,114,115,116,32,97,\n108,108,111,119,101,100,32,116,104,101,97,110,100,32,102,111,114,32,116,104,101,\n102,117,110,99,116,105,111,110,105,110,103,112,108,97,121,105,110,103,32,116,104\n,101,115,111,108,117,116,105,111,110,32,116,111,104,101,105,103,104,116,61,34,48\n,34,32,105,110,32,104,105,115,32,98,111,111,107,109,111,114,101,32,116,104,97,\n110,32,97,102,111,108,108,111,119,115,32,116,104,101,99,114,101,97,116,101,100,\n32,116,104,101,112,114,101,115,101,110,99,101,32,105,110,38,110,98,115,112,59,60\n,47,116,100,62,110,97,116,105,111,110,97,108,105,115,116,116,104,101,32,105,100,\n101,97,32,111,102,97,32,99,104,97,114,97,99,116,101,114,119,101,114,101,32,102,\n111,114,99,101,100,32,99,108,97,115,115,61,34,98,116,110,100,97,121,115,32,111,\n102,32,116,104,101,102,101,97,116,117,114,101,100,32,105,110,115,104,111,119,105\n,110,103,32,116,104,101,105,110,116,101,114,101,115,116,32,105,110,105,110,32,\n112,108,97,99,101,32,111,102,116,117,114,110,32,111,102,32,116,104,101,116,104,\n101,32,104,101,97,100,32,111,102,76,111,114,100,32,111,102,32,116,104,101,112,\n111,108,105,116,105,99,97,108,108,121,104,97,115,32,105,116,115,32,111,119,110,\n69,100,117,99,97,116,105,111,110,97,108,97,112,112,114,111,118,97,108,32,111,102\n,115,111,109,101,32,111,102,32,116,104,101,101,97,99,104,32,111,116,104,101,114,\n44,98,101,104,97,118,105,111,114,32,111,102,97,110,100,32,98,101,99,97,117,115,\n101,97,110,100,32,97,110,111,116,104,101,114,97,112,112,101,97,114,101,100,32,\n111,110,114,101,99,111,114,100,101,100,32,105,110,98,108,97,99,107,38,113,117,\n111,116,59,109,97,121,32,105,110,99,108,117,100,101,116,104,101,32,119,111,114,\n108,100,39,115,99,97,110,32,108,101,97,100,32,116,111,114,101,102,101,114,115,32\n,116,111,32,97,98,111,114,100,101,114,61,34,48,34,32,103,111,118,101,114,110,109\n,101,110,116,32,119,105,110,110,105,110,103,32,116,104,101,114,101,115,117,108,\n116,101,100,32,105,110,32,119,104,105,108,101,32,116,104,101,32,87,97,115,104,\n105,110,103,116,111,110,44,116,104,101,32,115,117,98,106,101,99,116,99,105,116,\n121,32,105,110,32,116,104,101,62,60,47,100,105,118,62,13,10,9,9,114,101,102,108,\n101,99,116,32,116,104,101,116,111,32,99,111,109,112,108,101,116,101,98,101,99,97\n,109,101,32,109,111,114,101,114,97,100,105,111,97,99,116,105,118,101,114,101,106\n,101,99,116,101,100,32,98,121,119,105,116,104,111,117,116,32,97,110,121,104,105,\n115,32,102,97,116,104,101,114,44,119,104,105,99,104,32,99,111,117,108,100,99,111\n,112,121,32,111,102,32,116,104,101,116,111,32,105,110,100,105,99,97,116,101,97,\n32,112,111,108,105,116,105,99,97,108,97,99,99,111,117,110,116,115,32,111,102,99,\n111,110,115,116,105,116,117,116,101,115,119,111,114,107,101,100,32,119,105,116,\n104,101,114,60,47,97,62,60,47,108,105,62,111,102,32,104,105,115,32,108,105,102,\n101,97,99,99,111,109,112,97,110,105,101,100,99,108,105,101,110,116,87,105,100,\n116,104,112,114,101,118,101,110,116,32,116,104,101,76,101,103,105,115,108,97,116\n,105,118,101,100,105,102,102,101,114,101,110,116,108,121,116,111,103,101,116,104\n,101,114,32,105,110,104,97,115,32,115,101,118,101,114,97,108,102,111,114,32,97,\n110,111,116,104,101,114,116,101,120,116,32,111,102,32,116,104,101,102,111,117,\n110,100,101,100,32,116,104,101,101,32,119,105,116,104,32,116,104,101,32,105,115,\n32,117,115,101,100,32,102,111,114,99,104,97,110,103,101,100,32,116,104,101,117,\n115,117,97,108,108,121,32,116,104,101,112,108,97,99,101,32,119,104,101,114,101,\n119,104,101,114,101,97,115,32,116,104,101,62,32,60,97,32,104,114,101,102,61,34,\n34,62,60,97,32,104,114,101,102,61,34,116,104,101,109,115,101,108,118,101,115,44,\n97,108,116,104,111,117,103,104,32,104,101,116,104,97,116,32,99,97,110,32,98,101,\n116,114,97,100,105,116,105,111,110,97,108,114,111,108,101,32,111,102,32,116,104,\n101,97,115,32,97,32,114,101,115,117,108,116,114,101,109,111,118,101,67,104,105,\n108,100,100,101,115,105,103,110,101,100,32,98,121,119,101,115,116,32,111,102,32,\n116,104,101,83,111,109,101,32,112,101,111,112,108,101,112,114,111,100,117,99,116\n,105,111,110,44,115,105,100,101,32,111,102,32,116,104,101,110,101,119,115,108,\n101,116,116,101,114,115,117,115,101,100,32,98,121,32,116,104,101,100,111,119,110\n,32,116,111,32,116,104,101,97,99,99,101,112,116,101,100,32,98,121,108,105,118,\n101,32,105,110,32,116,104,101,97,116,116,101,109,112,116,115,32,116,111,111,117,\n116,115,105,100,101,32,116,104,101,102,114,101,113,117,101,110,99,105,101,115,72\n,111,119,101,118,101,114,44,32,105,110,112,114,111,103,114,97,109,109,101,114,\n115,97,116,32,108,101,97,115,116,32,105,110,97,112,112,114,111,120,105,109,97,\n116,101,97,108,116,104,111,117,103,104,32,105,116,119,97,115,32,112,97,114,116,\n32,111,102,97,110,100,32,118,97,114,105,111,117,115,71,111,118,101,114,110,111,\n114,32,111,102,116,104,101,32,97,114,116,105,99,108,101,116,117,114,110,101,100,\n32,105,110,116,111,62,60,97,32,104,114,101,102,61,34,47,116,104,101,32,101,99,\n111,110,111,109,121,105,115,32,116,104,101,32,109,111,115,116,109,111,115,116,32\n,119,105,100,101,108,121,119,111,117,108,100,32,108,97,116,101,114,97,110,100,32\n,112,101,114,104,97,112,115,114,105,115,101,32,116,111,32,116,104,101,111,99,99,\n117,114,115,32,119,104,101,110,117,110,100,101,114,32,119,104,105,99,104,99,111,\n110,100,105,116,105,111,110,115,46,116,104,101,32,119,101,115,116,101,114,110,\n116,104,101,111,114,121,32,116,104,97,116,105,115,32,112,114,111,100,117,99,101,\n100,116,104,101,32,99,105,116,121,32,111,102,105,110,32,119,104,105,99,104,32,\n104,101,115,101,101,110,32,105,110,32,116,104,101,116,104,101,32,99,101,110,116,\n114,97,108,98,117,105,108,100,105,110,103,32,111,102,109,97,110,121,32,111,102,\n32,104,105,115,97,114,101,97,32,111,102,32,116,104,101,105,115,32,116,104,101,32\n,111,110,108,121,109,111,115,116,32,111,102,32,116,104,101,109,97,110,121,32,111\n,102,32,116,104,101,116,104,101,32,87,101,115,116,101,114,110,84,104,101,114,101\n,32,105,115,32,110,111,101,120,116,101,110,100,101,100,32,116,111,83,116,97,116,\n105,115,116,105,99,97,108,99,111,108,115,112,97,110,61,50,32,124,115,104,111,114\n,116,32,115,116,111,114,121,112,111,115,115,105,98,108,101,32,116,111,116,111,\n112,111,108,111,103,105,99,97,108,99,114,105,116,105,99,97,108,32,111,102,114,\n101,112,111,114,116,101,100,32,116,111,97,32,67,104,114,105,115,116,105,97,1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05,195,179,110,100,105,115,112,111,110,105,98,108,\n101,115,101,118,97,108,117,97,99,105,195,179,110,101,115,116,117,100,105,97,110,\n116,101,115,114,101,115,112,111,110,115,97,98,108,101,114,101,115,111,108,117,99\n,105,195,179,110,103,117,97,100,97,108,97,106,97,114,97,114,101,103,105,115,116,\n114,97,100,111,115,111,112,111,114,116,117,110,105,100,97,100,99,111,109,101,114\n,99,105,97,108,101,115,102,111,116,111,103,114,97,102,195,173,97,97,117,116,111,\n114,105,100,97,100,101,115,105,110,103,101,110,105,101,114,195,173,97,116,101,\n108,101,118,105,115,105,195,179,110,99,111,109,112,101,116,101,110,99,105,97,111\n,112,101,114,97,99,105,111,110,101,115,101,115,116,97,98,108,101,99,105,100,111,\n115,105,109,112,108,101,109,101,110,116,101,97,99,116,117,97,108,109,101,110,116\n,101,110,97,118,101,103,97,99,105,195,179,110,99,111,110,102,111,114,109,105,100\n,97,100,108,105,110,101,45,104,101,105,103,104,116,58,102,111,110,116,45,102,97,\n109,105,108,121,58,34,32,58,32,34,104,116,116,112,58,47,47,97,112,112,108,105,99\n,97,116,105,111,110,115,108,105,110,107,34,32,104,114,101,102,61,34,115,112,101,\n99,105,102,105,99,97,108,108,121,47,47,60,33,91,67,68,65,84,65,91,10,79,114,103,\n97,110,105,122,97,116,105,111,110,100,105,115,116,114,105,98,117,116,105,111,110\n,48,112,120,59,32,104,101,105,103,104,116,58,114,101,108,97,116,105,111,110,115,\n104,105,112,100,101,118,105,99,101,45,119,105,100,116,104,60,100,105,118,32,99,\n108,97,115,115,61,34,60,108,97,98,101,108,32,102,111,114,61,34,114,101,103,105,\n115,116,114,97,116,105,111,110,60,47,110,111,115,99,114,105,112,116,62,10,47,105\n,110,100,101,120,46,104,116,109,108,34,119,105,110,100,111,119,46,111,112,101,\n110,40,32,33,105,109,112,111,114,116,97,110,116,59,97,112,112,108,105,99,97,116,\n105,111,110,47,105,110,100,101,112,101,110,100,101,110,99,101,47,47,119,119,119,\n46,103,111,111,103,108,101,111,114,103,97,110,105,122,97,116,105,111,110,97,117,\n116,111,99,111,109,112,108,101,116,101,114,101,113,117,105,114,101,109,101,110,\n116,115,99,111,110,115,101,114,118,97,116,105,118,101,60,102,111,114,109,32,110,\n97,109,101,61,34,105,110,116,101,108,108,101,99,116,117,97,108,109,97,114,103,\n105,110,45,108,101,102,116,58,49,56,116,104,32,99,101,110,116,117,114,121,97,110\n,32,105,109,112,111,114,116,97,110,116,105,110,115,116,105,116,117,116,105,111,\n110,115,97,98,98,114,101,118,105,97,116,105,111,110,60,105,109,103,32,99,108,97,\n115,115,61,34,111,114,103,97,110,105,115,97,116,105,111,110,99,105,118,105,108,\n105,122,97,116,105,111,110,49,57,116,104,32,99,101,110,116,117,114,121,97,114,99\n,104,105,116,101,99,116,117,114,101,105,110,99,111,114,112,111,114,97,116,101,\n100,50,48,116,104,32,99,101,110,116,117,114,121,45,99,111,110,116,97,105,110,101\n,114,34,62,109,111,115,116,32,110,111,116,97,98,108,121,47,62,60,47,97,62,60,47,\n100,105,118,62,110,111,116,105,102,105,99,97,116,105,111,110,39,117,110,100,101,\n102,105,110,101,100,39,41,70,117,114,116,104,101,114,109,111,114,101,44,98,101,\n108,105,101,118,101,32,116,104,97,116,105,110,110,101,114,72,84,77,76,32,61,32,\n112,114,105,111,114,32,116,111,32,116,104,101,100,114,97,109,97,116,105,99,97,\n108,108,121,114,101,102,101,114,114,105,110,103,32,116,111,110,101,103,111,116,\n105,97,116,105,111,110,115,104,101,97,100,113,117,97,114,116,101,114,115,83,111,\n117,116,104,32,65,102,114,105,99,97,117,110,115,117,99,99,101,115,115,102,117,\n108,80,101,110,110,115,121,108,118,97,110,105,97,65,115,32,97,32,114,101,115,117\n,108,116,44,60,104,116,109,108,32,108,97,110,103,61,34,38,108,116,59,47,115,117,\n112,38,103,116,59,100,101,97,108,105,110,103,32,119,105,116,104,112,104,105,108,\n97,100,101,108,112,104,105,97,104,105,115,116,111,114,105,99,97,108,108,121,41,\n59,60,47,115,99,114,105,112,116,62,10,112,97,100,100,105,110,103,45,116,111,112,\n58,101,120,112,101,114,105,109,101,110,116,97,108,103,101,116,65,116,116,114,105\n,98,117,116,101,105,110,115,116,114,117,99,116,105,111,110,115,116,101,99,104,\n110,111,108,111,103,105,101,115,112,97,114,116,32,111,102,32,116,104,101,32,61,\n102,117,110,99,116,105,111,110,40,41,123,115,117,98,115,99,114,105,112,116,105,\n111,110,108,46,100,116,100,34,62,13,10,60,104,116,103,101,111,103,114,97,112,104\n,105,99,97,108,67,111,110,115,116,105,116,117,116,105,111,110,39,44,32,102,117,\n110,99,116,105,111,110,40,115,117,112,112,111,114,116,101,100,32,98,121,97,103,\n114,105,99,117,108,116,117,114,97,108,99,111,110,115,116,114,117,99,116,105,111,\n110,112,117,98,108,105,99,97,116,105,111,110,115,102,111,110,116,45,115,105,122,\n101,58,32,49,97,32,118,97,114,105,101,116,121,32,111,102,60,100,105,118,32,115,\n116,121,108,101,61,34,69,110,99,121,99,108,111,112,101,100,105,97,105,102,114,97\n,109,101,32,115,114,99,61,34,100,101,109,111,110,115,116,114,97,116,101,100,97,\n99,99,111,109,112,108,105,115,104,101,100,117,110,105,118,101,114,115,105,116,\n105,101,115,68,101,109,111,103,114,97,112,104,105,99,115,41,59,60,47,115,99,114,\n105,112,116,62,60,100,101,100,105,99,97,116,101,100,32,116,111,107,110,111,119,\n108,101,100,103,101,32,111,102,115,97,116,105,115,102,97,99,116,105,111,110,112,\n97,114,116,105,99,117,108,97,114,108,121,60,47,100,105,118,62,60,47,100,105,118,\n62,69,110,103,108,105,115,104,32,40,85,83,41,97,112,112,101,110,100,67,104,105,\n108,100,40,116,114,97,110,115,109,105,115,115,105,111,110,115,46,32,72,111,119,\n101,118,101,114,44,32,105,110,116,101,108,108,105,103,101,110,99,101,34,32,116,\n97,98,105,110,100,101,120,61,34,102,108,111,97,116,58,114,105,103,104,116,59,67,\n111,109,109,111,110,119,101,97,108,116,104,114,97,110,103,105,110,103,32,102,114\n,111,109,105,110,32,119,104,105,99,104,32,116,104,101,97,116,32,108,101,97,115,\n116,32,111,110,101,114,101,112,114,111,100,117,99,116,105,111,110,101,110,99,121\n,99,108,111,112,101,100,105,97,59,102,111,110,116,45,115,105,122,101,58,49,106,\n117,114,105,115,100,105,99,116,105,111,110,97,116,32,116,104,97,116,32,116,105,\n109,101,34,62,60,97,32,99,108,97,115,115,61,34,73,110,32,97,100,100,105,116,105,\n111,110,44,100,101,115,99,114,105,112,116,105,111,110,43,99,111,110,118,101,114,\n115,97,116,105,111,110,99,111,110,116,97,99,116,32,119,105,116,104,105,115,32,\n103,101,110,101,114,97,108,108,121,114,34,32,99,111,110,116,101,110,116,61,34,\n114,101,112,114,101,115,101,110,116,105,110,103,38,108,116,59,109,97,116,104,38,\n103,116,59,112,114,101,115,101,110,116,97,116,105,111,110,111,99,99,97,115,105,\n111,110,97,108,108,121,60,105,109,103,32,119,105,100,116,104,61,34,110,97,118,\n105,103,97,116,105,111,110,34,62,99,111,109,112,101,110,115,97,116,105,111,110,\n99,104,97,109,112,105,111,110,115,104,105,112,109,101,100,105,97,61,34,97,108,\n108,34,32,118,105,111,108,97,116,105,111,110,32,111,102,114,101,102,101,114,101,\n110,99,101,32,116,111,114,101,116,117,114,110,32,116,114,117,101,59,83,116,114,\n105,99,116,47,47,69,78,34,32,116,114,97,110,115,97,99,116,105,111,110,115,105,\n110,116,101,114,118,101,110,116,105,111,110,118,101,114,105,102,105,99,97,116,\n105,111,110,73,110,102,111,114,109,97,116,105,111,110,32,100,105,102,102,105,99,\n117,108,116,105,101,115,67,104,97,109,112,105,111,110,115,104,105,112,99,97,112,\n97,98,105,108,105,116,105,101,115,60,33,91,101,110,100,105,102,93,45,45,62,125,\n10,60,47,115,99,114,105,112,116,62,10,67,104,114,105,115,116,105,97,110,105,116,\n121,102,111,114,32,101,120,97,109,112,108,101,44,80,114,111,102,101,115,115,105,\n111,110,97,108,114,101,115,116,114,105,99,116,105,111,110,115,115,117,103,103,\n101,115,116,32,116,104,97,116,119,97,115,32,114,101,108,101,97,115,101,100,40,\n115,117,99,104,32,97,115,32,116,104,101,114,101,109,111,118,101,67,108,97,115,\n115,40,117,110,101,109,112,108,111,121,109,101,110,116,116,104,101,32,65,109,101\n,114,105,99,97,110,115,116,114,117,99,116,117,114,101,32,111,102,47,105,110,100,\n101,120,46,104,116,109,108,32,112,117,98,108,105,115,104,101,100,32,105,110,115,\n112,97,110,32,99,108,97,115,115,61,34,34,62,60,97,32,104,114,101,102,61,34,47,\n105,110,116,114,111,100,117,99,116,105,111,110,98,101,108,111,110,103,105,110,\n103,32,116,111,99,108,97,105,109,101,100,32,116,104,97,116,99,111,110,115,101,\n113,117,101,110,99,101,115,60,109,101,116,97,32,110,97,109,101,61,34,71,117,105,\n100,101,32,116,111,32,116,104,101,111,118,101,114,119,104,101,108,109,105,110,\n103,97,103,97,105,110,115,116,32,116,104,101,32,99,111,110,99,101,110,116,114,97\n,116,101,100,44,10,46,110,111,110,116,111,117,99,104,32,111,98,115,101,114,118,\n97,116,105,111,110,115,60,47,97,62,10,60,47,100,105,118,62,10,102,32,40,100,111,\n99,117,109,101,110,116,46,98,111,114,100,101,114,58,32,49,112,120,32,123,102,111\n,110,116,45,115,105,122,101,58,49,116,114,101,97,116,109,101,110,116,32,111,102,\n48,34,32,104,101,105,103,104,116,61,34,49,109,111,100,105,102,105,99,97,116,105,\n111,110,73,110,100,101,112,101,110,100,101,110,99,101,100,105,118,105,100,101,\n100,32,105,110,116,111,103,114,101,97,116,101,114,32,116,104,97,110,97,99,104,\n105,101,118,101,109,101,110,116,115,101,115,116,97,98,108,105,115,104,105,110,\n103,74,97,118,97,83,99,114,105,112,116,34,32,110,101,118,101,114,116,104,101,108\n,101,115,115,115,105,103,110,105,102,105,99,97,110,99,101,66,114,111,97,100,99,\n97,115,116,105,110,103,62,38,110,98,115,112,59,60,47,116,100,62,99,111,110,116,\n97,105,110,101,114,34,62,10,115,117,99,104,32,97,115,32,116,104,101,32,105,110,\n102,108,117,101,110,99,101,32,111,102,97,32,112,97,114,116,105,99,117,108,97,114\n,115,114,99,61,39,104,116,116,112,58,47,47,110,97,118,105,103,97,116,105,111,110\n,34,32,104,97,108,102,32,111,102,32,116,104,101,32,115,117,98,115,116,97,110,116\n,105,97,108,32,38,110,98,115,112,59,60,47,100,105,118,62,97,100,118,97,110,116,\n97,103,101,32,111,102,100,105,115,99,111,118,101,114,121,32,111,102,102,117,110,\n100,97,109,101,110,116,97,108,32,109,101,116,114,111,112,111,108,105,116,97,110,\n116,104,101,32,111,112,112,111,115,105,116,101,34,32,120,109,108,58,108,97,110,\n103,61,34,100,101,108,105,98,101,114,97,116,101,108,121,97,108,105,103,110,61,99\n,101,110,116,101,114,101,118,111,108,117,116,105,111,110,32,111,102,112,114,101,\n115,101,114,118,97,116,105,111,110,105,109,112,114,111,118,101,109,101,110,116,\n115,98,101,103,105,110,110,105,110,103,32,105,110,74,101,115,117,115,32,67,104,\n114,105,115,116,80,117,98,108,105,99,97,116,105,111,110,115,100,105,115,97,103,\n114,101,101,109,101,110,116,116,101,120,116,45,97,108,105,103,110,58,114,44,32,\n102,117,110,99,116,105,111,110,40,41,115,105,109,105,108,97,114,105,116,105,101,\n115,98,111,100,121,62,60,47,104,116,109,108,62,105,115,32,99,117,114,114,101,110\n,116,108,121,97,108,112,104,97,98,101,116,105,99,97,108,105,115,32,115,111,109,\n101,116,105,109,101,115,116,121,112,101,61,34,105,109,97,103,101,47,109,97,110,\n121,32,111,102,32,116,104,101,32,102,108,111,119,58,104,105,100,100,101,110,59,\n97,118,97,105,108,97,98,108,101,32,105,110,100,101,115,99,114,105,98,101,32,116,\n104,101,101,120,105,115,116,101,110,99,101,32,111,102,97,108,108,32,111,118,101,\n114,32,116,104,101,116,104,101,32,73,110,116,101,114,110,101,116,9,60,117,108,32\n,99,108,97,115,115,61,34,105,110,115,116,97,108,108,97,116,105,111,110,110,101,\n105,103,104,98,111,114,104,111,111,100,97,114,109,101,100,32,102,111,114,99,101,\n115,114,101,100,117,99,105,110,103,32,116,104,101,99,111,110,116,105,110,117,101\n,115,32,116,111,78,111,110,101,116,104,101,108,101,115,115,44,116,101,109,112,\n101,114,97,116,117,114,101,115,10,9,9,60,97,32,104,114,101,102,61,34,99,108,111,\n115,101,32,116,111,32,116,104,101,101,120,97,109,112,108,101,115,32,111,102,32,\n105,115,32,97,98,111,117,116,32,116,104,101,40,115,101,101,32,98,101,108,111,119\n,41,46,34,32,105,100,61,34,115,101,97,114,99,104,112,114,111,102,101,115,115,105\n,111,110,97,108,105,115,32,97,118,97,105,108,97,98,108,101,116,104,101,32,111,\n102,102,105,99,105,97,108,9,9,60,47,115,99,114,105,112,116,62,10,10,9,9,60,100,\n105,118,32,105,100,61,34,97,99,99,101,108,101,114,97,116,105,111,110,116,104,114\n,111,117,103,104,32,116,104,101,32,72,97,108,108,32,111,102,32,70,97,109,101,100\n,101,115,99,114,105,112,116,105,111,110,115,116,114,97,110,115,108,97,116,105,\n111,110,115,105,110,116,101,114,102,101,114,101,110,99,101,32,116,121,112,101,61\n,39,116,101,120,116,47,114,101,99,101,110,116,32,121,101,97,114,115,105,110,32,\n116,104,101,32,119,111,114,108,100,118,101,114,121,32,112,111,112,117,108,97,114\n,123,98,97,99,107,103,114,111,117,110,100,58,116,114,97,100,105,116,105,111,110,\n97,108,32,115,111,109,101,32,111,102,32,116,104,101,32,99,111,110,110,101,99,116\n,101,100,32,116,111,101,120,112,108,111,105,116,97,116,105,111,110,101,109,101,\n114,103,101,110,99,101,32,111,102,99,111,110,115,116,105,116,117,116,105,111,110\n,65,32,72,105,115,116,111,114,121,32,111,102,115,105,103,110,105,102,105,99,97,\n110,116,32,109,97,110,117,102,97,99,116,117,114,101,100,101,120,112,101,99,116,\n97,116,105,111,110,115,62,60,110,111,115,99,114,105,112,116,62,60,99,97,110,32,\n98,101,32,102,111,117,110,100,98,101,99,97,117,115,101,32,116,104,101,32,104,97,\n115,32,110,111,116,32,98,101,101,110,110,101,105,103,104,98,111,117,114,105,110,\n103,119,105,116,104,111,117,116,32,116,104,101,32,97,100,100,101,100,32,116,111,\n32,116,104,101,9,60,108,105,32,99,108,97,115,115,61,34,105,110,115,116,114,117,\n109,101,110,116,97,108,83,111,118,105,101,116,32,85,110,105,111,110,97,99,107,\n110,111,119,108,101,100,103,101,100,119,104,105,99,104,32,99,97,110,32,98,101,\n110,97,109,101,32,102,111,114,32,116,104,101,97,116,116,101,110,116,105,111,110,\n32,116,111,97,116,116,101,109,112,116,115,32,116,111,32,100,101,118,101,108,111,\n112,109,101,110,116,115,73,110,32,102,97,99,116,44,32,116,104,101,60,108,105,32,\n99,108,97,115,115,61,34,97,105,109,112,108,105,99,97,116,105,111,110,115,115,117\n,105,116,97,98,108,101,32,102,111,114,109,117,99,104,32,111,102,32,116,104,101,\n32,99,111,108,111,110,105,122,97,116,105,111,110,112,114,101,115,105,100,101,110\n,116,105,97,108,99,97,110,99,101,108,66,117,98,98,108,101,32,73,110,102,111,114,\n109,97,116,105,111,110,109,111,115,116,32,111,102,32,116,104,101,32,105,115,32,\n100,101,115,99,114,105,98,101,100,114,101,115,116,32,111,102,32,116,104,101,32,\n109,111,114,101,32,111,114,32,108,101,115,115,105,110,32,83,101,112,116,101,109,\n98,101,114,73,110,116,101,108,108,105,103,101,110,99,101,115,114,99,61,34,104,\n116,116,112,58,47,47,112,120,59,32,104,101,105,103,104,116,58,32,97,118,97,105,\n108,97,98,108,101,32,116,111,109,97,110,117,102,97,99,116,117,114,101,114,104,\n117,109,97,110,32,114,105,103,104,116,115,108,105,110,107,32,104,114,101,102,61,\n34,47,97,118,97,105,108,97,98,105,108,105,116,121,112,114,111,112,111,114,116,\n105,111,110,97,108,111,117,116,115,105,100,101,32,116,104,101,32,97,115,116,114,\n111,110,111,109,105,99,97,108,104,117,109,97,110,32,98,101,105,110,103,115,110,\n97,109,101,32,111,102,32,116,104,101,32,97,114,101,32,102,111,117,110,100,32,105\n,110,97,114,101,32,98,97,115,101,100,32,111,110,115,109,97,108,108,101,114,32,\n116,104,97,110,97,32,112,101,114,115,111,110,32,119,104,111,101,120,112,97,110,\n115,105,111,110,32,111,102,97,114,103,117,105,110,103,32,116,104,97,116,110,111,\n119,32,107,110,111,119,110,32,97,115,73,110,32,116,104,101,32,101,97,114,108,121\n,105,110,116,101,114,109,101,100,105,97,116,101,100,101,114,105,118,101,100,32,\n102,114,111,109,83,99,97,110,100,105,110,97,118,105,97,110,60,47,97,62,60,47,100\n,105,118,62,13,10,99,111,110,115,105,100,101,114,32,116,104,101,97,110,32,101,\n115,116,105,109,97,116,101,100,116,104,101,32,78,97,116,105,111,110,97,108,60,\n100,105,118,32,105,100,61,34,112,97,103,114,101,115,117,108,116,105,110,103,32,\n105,110,99,111,109,109,105,115,115,105,111,110,101,100,97,110,97,108,111,103,111\n,117,115,32,116,111,97,114,101,32,114,101,113,117,105,114,101,100,47,117,108,62,\n10,60,47,100,105,118,62,10,119,97,115,32,98,97,115,101,100,32,111,110,97,110,100\n,32,98,101,99,97,109,101,32,97,38,110,98,115,112,59,38,110,98,115,112,59,116,34,\n32,118,97,108,117,101,61,34,34,32,119,97,115,32,99,97,112,116,117,114,101,100,\n110,111,32,109,111,114,101,32,116,104,97,110,114,101,115,112,101,99,116,105,118,\n101,108,121,99,111,110,116,105,110,117,101,32,116,111,32,62,13,10,60,104,101,97,\n100,62,13,10,60,119,101,114,101,32,99,114,101,97,116,101,100,109,111,114,101,32,\n103,101,110,101,114,97,108,105,110,102,111,114,109,97,116,105,111,110,32,117,115\n,101,100,32,102,111,114,32,116,104,101,105,110,100,101,112,101,110,100,101,110,\n116,32,116,104,101,32,73,109,112,101,114,105,97,108,99,111,109,112,111,110,101,\n110,116,32,111,102,116,111,32,116,104,101,32,110,111,114,116,104,105,110,99,108,\n117,100,101,32,116,104,101,32,67,111,110,115,116,114,117,99,116,105,111,110,115,\n105,100,101,32,111,102,32,116,104,101,32,119,111,117,108,100,32,110,111,116,32,\n98,101,102,111,114,32,105,110,115,116,97,110,99,101,105,110,118,101,110,116,105,\n111,110,32,111,102,109,111,114,101,32,99,111,109,112,108,101,120,99,111,108,108,\n101,99,116,105,118,101,108,121,98,97,99,107,103,114,111,117,110,100,58,32,116,\n101,120,116,45,97,108,105,103,110,58,32,105,116,115,32,111,114,105,103,105,110,\n97,108,105,110,116,111,32,97,99,99,111,117,110,116,116,104,105,115,32,112,114,\n111,99,101,115,115,97,110,32,101,120,116,101,110,115,105,118,101,104,111,119,101\n,118,101,114,44,32,116,104,101,116,104,101,121,32,97,114,101,32,110,111,116,114,\n101,106,101,99,116,101,100,32,116,104,101,99,114,105,116,105,99,105,115,109,32,\n111,102,100,117,114,105,110,103,32,119,104,105,99,104,112,114,111,98,97,98,108,\n121,32,116,104,101,116,104,105,115,32,97,114,116,105,99,108,101,40,102,117,110,\n99,116,105,111,110,40,41,123,73,116,32,115,104,111,117,108,100,32,98,101,97,110,\n32,97,103,114,101,101,109,101,110,116,97,99,99,105,100,101,110,116,97,108,108,\n121,100,105,102,102,101,114,115,32,102,114,111,109,65,114,99,104,105,116,101,99,\n116,117,114,101,98,101,116,116,101,114,32,107,110,111,119,110,97,114,114,97,110,\n103,101,109,101,110,116,115,105,110,102,108,117,101,110,99,101,32,111,110,97,116\n,116,101,110,100,101,100,32,116,104,101,105,100,101,110,116,105,99,97,108,32,116\n,111,115,111,117,116,104,32,111,102,32,116,104,101,112,97,115,115,32,116,104,114\n,111,117,103,104,120,109,108,34,32,116,105,116,108,101,61,34,119,101,105,103,104\n,116,58,98,111,108,100,59,99,114,101,97,116,105,110,103,32,116,104,101,100,105,\n115,112,108,97,121,58,110,111,110,101,114,101,112,108,97,99,101,100,32,116,104,\n101,60,105,109,103,32,115,114,99,61,34,47,105,104,116,116,112,115,58,47,47,119,\n119,119,46,87,111,114,108,100,32,87,97,114,32,73,73,116,101,115,116,105,109,111,\n110,105,97,108,115,102,111,117,110,100,32,105,110,32,116,104,101,114,101,113,117\n,105,114,101,100,32,116,111,32,97,110,100,32,116,104,97,116,32,116,104,101,98,\n101,116,119,101,101,110,32,116,104,101,32,119,97,115,32,100,101,115,105,103,110,\n101,100,99,111,110,115,105,115,116,115,32,111,102,32,99,111,110,115,105,100,101,\n114,97,98,108,121,112,117,98,108,105,115,104,101,100,32,98,121,116,104,101,32,\n108,97,110,103,117,97,103,101,67,111,110,115,101,114,118,97,116,105,111,110,99,\n111,110,115,105,115,116,101,100,32,111,102,114,101,102,101,114,32,116,111,32,116\n,104,101,98,97,99,107,32,116,111,32,116,104,101,32,99,115,115,34,32,109,101,100,\n105,97,61,34,80,101,111,112,108,101,32,102,114,111,109,32,97,118,97,105,108,97,\n98,108,101,32,111,110,112,114,111,118,101,100,32,116,111,32,98,101,115,117,103,\n103,101,115,116,105,111,110,115,34,119,97,115,32,107,110,111,119,110,32,97,115,\n118,97,114,105,101,116,105,101,115,32,111,102,108,105,107,101,108,121,32,116,111\n,32,98,101,99,111,109,112,114,105,115,101,100,32,111,102,115,117,112,112,111,114\n,116,32,116,104,101,32,104,97,110,100,115,32,111,102,32,116,104,101,99,111,117,\n112,108,101,100,32,119,105,116,104,99,111,110,110,101,99,116,32,97,110,100,32,98\n,111,114,100,101,114,58,110,111,110,101,59,112,101,114,102,111,114,109,97,110,99\n,101,115,98,101,102,111,114,101,32,98,101,105,110,103,108,97,116,101,114,32,98,\n101,99,97,109,101,99,97,108,99,117,108,97,116,105,111,110,115,111,102,116,101,\n110,32,99,97,108,108,101,100,114,101,115,105,100,101,110,116,115,32,111,102,109,\n101,97,110,105,110,103,32,116,104,97,116,62,60,108,105,32,99,108,97,115,115,61,\n34,101,118,105,100,101,110,99,101,32,102,111,114,101,120,112,108,97,110,97,116,\n105,111,110,115,101,110,118,105,114,111,110,109,101,110,116,115,34,62,60,47,97,\n62,60,47,100,105,118,62,119,104,105,99,104,32,97,108,108,111,119,115,73,110,116,\n114,111,100,117,99,116,105,111,110,100,101,118,101,108,111,112,101,100,32,98,121\n,97,32,119,105,100,101,32,114,97,110,103,101,111,110,32,98,101,104,97,108,102,32\n,111,102,118,97,108,105,103,110,61,34,116,111,112,34,112,114,105,110,99,105,112,\n108,101,32,111,102,97,116,32,116,104,101,32,116,105,109,101,44,60,47,110,111,115\n,99,114,105,112,116,62,13,115,97,105,100,32,116,111,32,104,97,118,101,105,110,32\n,116,104,101,32,102,105,114,115,116,119,104,105,108,101,32,111,116,104,101,114,\n115,104,121,112,111,116,104,101,116,105,99,97,108,112,104,105,108,111,115,111,\n112,104,101,114,115,112,111,119,101,114,32,111,102,32,116,104,101,99,111,110,116\n,97,105,110,101,100,32,105,110,112,101,114,102,111,114,109,101,100,32,98,121,105\n,110,97,98,105,108,105,116,121,32,116,111,119,101,114,101,32,119,114,105,116,116\n,101,110,115,112,97,110,32,115,116,121,108,101,61,34,105,110,112,117,116,32,110,\n97,109,101,61,34,116,104,101,32,113,117,101,115,116,105,111,110,105,110,116,101,\n110,100,101,100,32,102,111,114,114,101,106,101,99,116,105,111,110,32,111,102,105\n,109,112,108,105,101,115,32,116,104,97,116,105,110,118,101,110,116,101,100,32,\n116,104,101,116,104,101,32,115,116,97,110,100,97,114,100,119,97,115,32,112,114,\n111,98,97,98,108,121,108,105,110,107,32,98,101,116,119,101,101,110,112,114,111,\n102,101,115,115,111,114,32,111,102,105,110,116,101,114,97,99,116,105,111,110,115\n,99,104,97,110,103,105,110,103,32,116,104,101,73,110,100,105,97,110,32,79,99,101\n,97,110,32,99,108,97,115,115,61,34,108,97,115,116,119,111,114,107,105,110,103,32\n,119,105,116,104,39,104,116,116,112,58,47,47,119,119,119,46,121,101,97,114,115,\n32,98,101,102,111,114,101,84,104,105,115,32,119,97,115,32,116,104,101,114,101,99\n,114,101,97,116,105,111,110,97,108,101,110,116,101,114,105,110,103,32,116,104,\n101,109,101,97,115,117,114,101,109,101,110,116,115,97,110,32,101,120,116,114,101\n,109,101,108,121,118,97,108,117,101,32,111,102,32,116,104,101,115,116,97,114,116\n,32,111,102,32,116,104,101,10,60,47,115,99,114,105,112,116,62,10,10,97,110,32,\n101,102,102,111,114,116,32,116,111,105,110,99,114,101,97,115,101,32,116,104,101,\n116,111,32,116,104,101,32,115,111,117,116,104,115,112,97,99,105,110,103,61,34,48\n,34,62,115,117,102,102,105,99,105,101,110,116,108,121,116,104,101,32,69,117,114,\n111,112,101,97,110,99,111,110,118,101,114,116,101,100,32,116,111,99,108,101,97,\n114,84,105,109,101,111,117,116,100,105,100,32,110,111,116,32,104,97,118,101,99,\n111,110,115,101,113,117,101,110,116,108,121,102,111,114,32,116,104,101,32,110,\n101,120,116,101,120,116,101,110,115,105,111,110,32,111,102,101,99,111,110,111,\n109,105,99,32,97,110,100,97,108,116,104,111,117,103,104,32,116,104,101,97,114,\n101,32,112,114,111,100,117,99,101,100,97,110,100,32,119,105,116,104,32,116,104,\n101,105,110,115,117,102,102,105,99,105,101,110,116,103,105,118,101,110,32,98,121\n,32,116,104,101,115,116,97,116,105,110,103,32,116,104,97,116,101,120,112,101,110\n,100,105,116,117,114,101,115,60,47,115,112,97,110,62,60,47,97,62,10,116,104,111,\n117,103,104,116,32,116,104,97,116,111,110,32,116,104,101,32,98,97,115,105,115,99\n,101,108,108,112,97,100,100,105,110,103,61,105,109,97,103,101,32,111,102,32,116,\n104,101,114,101,116,117,114,110,105,110,103,32,116,111,105,110,102,111,114,109,\n97,116,105,111,110,44,115,101,112,97,114,97,116,101,100,32,98,121,97,115,115,97,\n115,115,105,110,97,116,101,100,115,34,32,99,111,110,116,101,110,116,61,34,97,117\n,116,104,111,114,105,116,121,32,111,102,110,111,114,116,104,119,101,115,116,101,\n114,110,60,47,100,105,118,62,10,60,100,105,118,32,34,62,60,47,100,105,118,62,13,\n10,32,32,99,111,110,115,117,108,116,97,116,105,111,110,99,111,109,109,117,110,\n105,116,121,32,111,102,116,104,101,32,110,97,116,105,111,110,97,108,105,116,32,\n115,104,111,117,108,100,32,98,101,112,97,114,116,105,99,105,112,97,110,116,115,\n32,97,108,105,103,110,61,34,108,101,102,116,116,104,101,32,103,114,101,97,116,\n101,115,116,115,101,108,101,99,116,105,111,110,32,111,102,115,117,112,101,114,\n110,97,116,117,114,97,108,100,101,112,101,110,100,101,110,116,32,111,110,105,115\n,32,109,101,110,116,105,111,110,101,100,97,108,108,111,119,105,110,103,32,116,\n104,101,119,97,115,32,105,110,118,101,110,116,101,100,97,99,99,111,109,112,97,\n110,121,105,110,103,104,105,115,32,112,101,114,115,111,110,97,108,97,118,97,105,\n108,97,98,108,101,32,97,116,115,116,117,100,121,32,111,102,32,116,104,101,111,\n110,32,116,104,101,32,111,116,104,101,114,101,120,101,99,117,116,105,111,110,32,\n111,102,72,117,109,97,110,32,82,105,103,104,116,115,116,101,114,109,115,32,111,\n102,32,116,104,101,97,115,115,111,99,105,97,116,105,111,110,115,114,101,115,101,\n97,114,99,104,32,97,110,100,115,117,99,99,101,101,100,101,100,32,98,121,100,101,\n102,101,97,116,101,100,32,116,104,101,97,110,100,32,102,114,111,109,32,116,104,\n101,98,117,116,32,116,104,101,121,32,97,114,101,99,111,109,109,97,110,100,101,\n114,32,111,102,115,116,97,116,101,32,111,102,32,116,104,101,121,101,97,114,115,\n32,111,102,32,97,103,101,116,104,101,32,115,116,117,100,121,32,111,102,60,117,\n108,32,99,108,97,115,115,61,34,115,112,108,97,99,101,32,105,110,32,116,104,101,\n119,104,101,114,101,32,104,101,32,119,97,115,60,108,105,32,99,108,97,115,115,61,\n34,102,116,104,101,114,101,32,97,114,101,32,110,111,119,104,105,99,104,32,98,101\n,99,97,109,101,104,101,32,112,117,98,108,105,115,104,101,100,101,120,112,114,101\n,115,115,101,100,32,105,110,116,111,32,119,104,105,99,104,32,116,104,101,99,111,\n109,109,105,115,115,105,111,110,101,114,102,111,110,116,45,119,101,105,103,104,\n116,58,116,101,114,114,105,116,111,114,121,32,111,102,101,120,116,101,110,115,\n105,111,110,115,34,62,82,111,109,97,110,32,69,109,112,105,114,101,101,113,117,97\n,108,32,116,111,32,116,104,101,73,110,32,99,111,110,116,114,97,115,116,44,104,\n111,119,101,118,101,114,44,32,97,110,100,105,115,32,116,121,112,105,99,97,108,\n108,121,97,110,100,32,104,105,115,32,119,105,102,101,40,97,108,115,111,32,99,97,\n108,108,101,100,62,60,117,108,32,99,108,97,115,115,61,34,101,102,102,101,99,116,\n105,118,101,108,121,32,101,118,111,108,118,101,100,32,105,110,116,111,115,101,\n101,109,32,116,111,32,104,97,118,101,119,104,105,99,104,32,105,115,32,116,104,\n101,116,104,101,114,101,32,119,97,115,32,110,111,97,110,32,101,120,99,101,108,\n108,101,110,116,97,108,108,32,111,102,32,116,104,101,115,101,100,101,115,99,114,\n105,98,101,100,32,98,121,73,110,32,112,114,97,99,116,105,99,101,44,98,114,111,97\n,100,99,97,115,116,105,110,103,99,104,97,114,103,101,100,32,119,105,116,104,114,\n101,102,108,101,99,116,101,100,32,105,110,115,117,98,106,101,99,116,101,100,32,\n116,111,109,105,108,105,116,97,114,121,32,97,110,100,116,111,32,116,104,101,32,\n112,111,105,110,116,101,99,111,110,111,109,105,99,97,108,108,121,115,101,116,84,\n97,114,103,101,116,105,110,103,97,114,101,32,97,99,116,117,97,108,108,121,118,\n105,99,116,111,114,121,32,111,118,101,114,40,41,59,60,47,115,99,114,105,112,116,\n62,99,111,110,116,105,110,117,111,117,115,108,121,114,101,113,117,105,114,101,\n100,32,102,111,114,101,118,111,108,117,116,105,111,110,97,114,121,97,110,32,101,\n102,102,101,99,116,105,118,101,110,111,114,116,104,32,111,102,32,116,104,101,44,\n32,119,104,105,99,104,32,119,97,115,32,102,114,111,110,116,32,111,102,32,116,104\n,101,111,114,32,111,116,104,101,114,119,105,115,101,115,111,109,101,32,102,111,\n114,109,32,111,102,104,97,100,32,110,111,116,32,98,101,101,110,103,101,110,101,\n114,97,116,101,100,32,98,121,105,110,102,111,114,109,97,116,105,111,110,46,112,\n101,114,109,105,116,116,101,100,32,116,111,105,110,99,108,117,100,101,115,32,116\n,104,101,100,101,118,101,108,111,112,109,101,110,116,44,101,110,116,101,114,101,\n100,32,105,110,116,111,116,104,101,32,112,114,101,118,105,111,117,115,99,111,110\n,115,105,115,116,101,110,116,108,121,97,114,101,32,107,110,111,119,110,32,97,115\n,116,104,101,32,102,105,101,108,100,32,111,102,116,104,105,115,32,116,121,112,\n101,32,111,102,103,105,118,101,110,32,116,111,32,116,104,101,116,104,101,32,116,\n105,116,108,101,32,111,102,99,111,110,116,97,105,110,115,32,116,104,101,105,110,\n115,116,97,110,99,101,115,32,111,102,105,110,32,116,104,101,32,110,111,114,116,\n104,100,117,101,32,116,111,32,116,104,101,105,114,97,114,101,32,100,101,115,105,\n103,110,101,100,99,111,114,112,111,114,97,116,105,111,110,115,119,97,115,32,116,\n104,97,116,32,116,104,101,111,110,101,32,111,102,32,116,104,101,115,101,109,111,\n114,101,32,112,111,112,117,108,97,114,115,117,99,99,101,101,100,101,100,32,105,\n110,115,117,112,112,111,114,116,32,102,114,111,109,105,110,32,100,105,102,102,\n101,114,101,110,116,100,111,109,105,110,97,116,101,100,32,98,121,100,101,115,105\n,103,110,101,100,32,102,111,114,111,119,110,101,114,115,104,105,112,32,111,102,\n97,110,100,32,112,111,115,115,105,98,108,121,115,116,97,110,100,97,114,100,105,\n122,101,100,114,101,115,112,111,110,115,101,84,101,120,116,119,97,115,32,105,110\n,116,101,110,100,101,100,114,101,99,101,105,118,101,100,32,116,104,101,97,115,\n115,117,109,101,100,32,116,104,97,116,97,114,101,97,115,32,111,102,32,116,104,\n101,112,114,105,109,97,114,105,108,121,32,105,110,116,104,101,32,98,97,115,105,\n115,32,111,102,105,110,32,116,104,101,32,115,101,110,115,101,97,99,99,111,117,\n110,116,115,32,102,111,114,100,101,115,116,114,111,121,101,100,32,98,121,97,116,\n32,108,101,97,115,116,32,116,119,111,119,97,115,32,100,101,99,108,97,114,101,100\n,99,111,117,108,100,32,110,111,116,32,98,101,83,101,99,114,101,116,97,114,121,32\n,111,102,97,112,112,101,97,114,32,116,111,32,98,101,109,97,114,103,105,110,45,\n116,111,112,58,49,47,94,92,115,43,124,92,115,43,36,47,103,101,41,123,116,104,114\n,111,119,32,101,125,59,116,104,101,32,115,116,97,114,116,32,111,102,116,119,111,\n32,115,101,112,97,114,97,116,101,108,97,110,103,117,97,103,101,32,97,110,100,119\n,104,111,32,104,97,100,32,98,101,101,110,111,112,101,114,97,116,105,111,110,32,\n111,102,100,101,97,116,104,32,111,102,32,116,104,101,114,101,97,108,32,110,117,\n109,98,101,114,115,9,60,108,105,110,107,32,114,101,108,61,34,112,114,111,118,105\n,100,101,100,32,116,104,101,116,104,101,32,115,116,111,114,121,32,111,102,99,111\n,109,112,101,116,105,116,105,111,110,115,101,110,103,108,105,115,104,32,40,85,75\n,41,101,110,103,108,105,115,104,32,40,85,83,41,208,156,208,190,208,189,208,179,\n208,190,208,187,208,161,209,128,208,191,209,129,208,186,208,184,209,129,209,128,\n208,191,209,129,208,186,208,184,209,129,209,128,208,191,209,129,208,186,208,190,\n217,132,216,185,216,177,216,168,217,138,216,169,230,173,163,233,171,148,228,184,\n173,230,150,135,231,174,128,228,189,147,228,184,173,230,150,135,231,185,129,228,\n189,147,228,184,173,230,150,135,230,156,137,233,153,144,229,133,172,229,143,184,\n228,186,186,230,176,145,230,148,191,229,186,156,233,152,191,233,135,140,229,183,\n180,229,183,180,231,164,190,228,188,154,228,184,187,228,185,137,230,147,141,228,\n189,156,231,179,187,231,187,159,230,148,191,231,173,150,230,179,149,232,167,132,\n105,110,102,111,114,109,97,99,105,195,179,110,104,101,114,114,97,109,105,101,110\n,116,97,115,101,108,101,99,116,114,195,179,110,105,99,111,100,101,115,99,114,105\n,112,99,105,195,179,110,99,108,97,115,105,102,105,99,97,100,111,115,99,111,110,\n111,99,105,109,105,101,110,116,111,112,117,98,108,105,99,97,99,105,195,179,110,\n114,101,108,97,99,105,111,110,97,100,97,115,105,110,102,111,114,109,195,161,116,\n105,99,97,114,101,108,97,99,105,111,110,97,100,111,115,100,101,112,97,114,116,97\n,109,101,110,116,111,116,114,97,98,97,106,97,100,111,114,101,115,100,105,114,101\n,99,116,97,109,101,110,116,101,97,121,117,110,116,97,109,105,101,110,116,111,109\n,101,114,99,97,100,111,76,105,98,114,101,99,111,110,116,195,161,99,116,101,110,\n111,115,104,97,98,105,116,97,99,105,111,110,101,115,99,117,109,112,108,105,109,\n105,101,110,116,111,114,101,115,116,97,117,114,97,110,116,101,115,100,105,115,\n112,111,115,105,99,105,195,179,110,99,111,110,115,101,99,117,101,110,99,105,97,\n101,108,101,99,116,114,195,179,110,105,99,97,97,112,108,105,99,97,99,105,111,110\n,101,115,100,101,115,99,111,110,101,99,116,97,100,111,105,110,115,116,97,108,97,\n99,105,195,179,110,114,101,97,108,105,122,97,99,105,195,179,110,117,116,105,108,\n105,122,97,99,105,195,179,110,101,110,99,105,99,108,111,112,101,100,105,97,101,\n110,102,101,114,109,101,100,97,100,101,115,105,110,115,116,114,117,109,101,110,\n116,111,115,101,120,112,101,114,105,101,110,99,105,97,115,105,110,115,116,105,\n116,117,99,105,195,179,110,112,97,114,116,105,99,117,108,97,114,101,115,115,117,\n98,99,97,116,101,103,111,114,105,97,209,130,208,190,208,187,209,140,208,186,208,\n190,208,160,208,190,209,129,209,129,208,184,208,184,209,128,208,176,208,177,208,\n190,209,130,209,139,208,177,208,190,208,187,209,140,209,136,208,181,208,191,209,\n128,208,190,209,129,209,130,208,190,208,188,208,190,208,182,208,181,209,130,208,\n181,208,180,209,128,209,131,208,179,208,184,209,133,209,129,208,187,209,131,209,\n135,208,176,208,181,209,129,208,181,208,185,209,135,208,176,209,129,208,178,209,\n129,208,181,208,179,208,180,208,176,208,160,208,190,209,129,209,129,208,184,209,\n143,208,156,208,190,209,129,208,186,208,178,208,181,208,180,209,128,209,131,208,\n179,208,184,208,181,208,179,208,190,209,128,208,190,208,180,208,176,208,178,208,\n190,208,191,209,128,208,190,209,129,208,180,208,176,208,189,208,189,209,139,209,\n133,208,180,208,190,208,187,208,182,208,189,209,139,208,184,208,188,208,181,208,\n189,208,189,208,190,208,156,208,190,209,129,208,186,208,178,209,139,209,128,209,\n131,208,177,208,187,208,181,208,185,208,156,208,190,209,129,208,186,208,178,208,\n176,209,129,209,130,209,128,208,176,208,189,209,139,208,189,208,184,209,135,208,\n181,208,179,208,190,209,128,208,176,208,177,208,190,209,130,208,181,208,180,208,\n190,208,187,208,182,208,181,208,189,209,131,209,129,208,187,209,131,208,179,208,\n184,209,130,208,181,208,191,208,181,209,128,209,140,208,158,208,180,208,189,208,\n176,208,186,208,190,208,191,208,190,209,130,208,190,208,188,209,131,209,128,208,\n176,208,177,208,190,209,130,209,131,208,176,208,191,209,128,208,181,208,187,209,\n143,208,178,208,190,208,190,208,177,209,137,208,181,208,190,208,180,208,189,208,\n190,208,179,208,190,209,129,208,178,208,190,208,181,208,179,208,190,209,129,209,\n130,208,176,209,130,209,140,208,184,208,180,209,128,209,131,208,179,208,190,208,\n185,209,132,208,190,209,128,209,131,208,188,208,181,209,133,208,190,209,128,208,\n190,209,136,208,190,208,191,209,128,208,190,209,130,208,184,208,178,209,129,209,\n129,209,139,208,187,208,186,208,176,208,186,208,176,208,182,208,180,209,139,208,\n185,208,178,208,187,208,176,209,129,209,130,208,184,208,179,209,128,209,131,208,\n191,208,191,209,139,208,178,208,188,208,181,209,129,209,130,208,181,209,128,208,\n176,208,177,208,190,209,130,208,176,209,129,208,186,208,176,208,183,208,176,208,\n187,208,191,208,181,209,128,208,178,209,139,208,185,208,180,208,181,208,187,208,\n176,209,130,209,140,208,180,208,181,208,189,209,140,208,179,208,184,208,191,208,\n181,209,128,208,184,208,190,208,180,208,177,208,184,208,183,208,189,208,181,209,\n129,208,190,209,129,208,189,208,190,208,178,208,181,208,188,208,190,208,188,208,\n181,208,189,209,130,208,186,209,131,208,191,208,184,209,130,209,140,208,180,208,\n190,208,187,208,182,208,189,208,176,209,128,208,176,208,188,208,186,208,176,209,\n133,208,189,208,176,209,135,208,176,208,187,208,190,208,160,208,176,208,177,208,\n190,209,130,208,176,208,162,208,190,208,187,209,140,208,186,208,190,209,129,208,\n190,208,178,209,129,208,181,208,188,208,178,209,130,208,190,209,128,208,190,208,\n185,208,189,208,176,209,135,208,176,208,187,208,176,209,129,208,191,208,184,209,\n129,208,190,208,186,209,129,208,187,209,131,208,182,208,177,209,139,209,129,208,\n184,209,129,209,130,208,181,208,188,208,191,208,181,209,135,208,176,209,130,208,\n184,208,189,208,190,208,178,208,190,208,179,208,190,208,191,208,190,208,188,208,\n190,209,137,208,184,209,129,208,176,208,185,209,130,208,190,208,178,208,191,208,\n190,209,135,208,181,208,188,209,131,208,191,208,190,208,188,208,190,209,137,209,\n140,208,180,208,190,208,187,208,182,208,189,208,190,209,129,209,129,209,139,208,\n187,208,186,208,184,208,177,209,139,209,129,209,130,209,128,208,190,208,180,208,\n176,208,189,208,189,209,139,208,181,208,188,208,189,208,190,208,179,208,184,208,\n181,208,191,209,128,208,190,208,181,208,186,209,130,208,161,208,181,208,185,209,\n135,208,176,209,129,208,188,208,190,208,180,208,181,208,187,208,184,209,130,208,\n176,208,186,208,190,208,179,208,190,208,190,208,189,208,187,208,176,208,185,208,\n189,208,179,208,190,209,128,208,190,208,180,208,181,208,178,208,181,209,128,209,\n129,208,184,209,143,209,129,209,130,209,128,208,176,208,189,208,181,209,132,208,\n184,208,187,209,140,208,188,209,139,209,131,209,128,208,190,208,178,208,189,209,\n143,209,128,208,176,208,183,208,189,209,139,209,133,208,184,209,129,208,186,208,\n176,209,130,209,140,208,189,208,181,208,180,208,181,208,187,209,142,209,143,208,\n189,208,178,208,176,209,128,209,143,208,188,208,181,208,189,209,140,209,136,208,\n181,208,188,208,189,208,190,208,179,208,184,209,133,208,180,208,176,208,189,208,\n189,208,190,208,185,208,183,208,189,208,176,209,135,208,184,209,130,208,189,208,\n181,208,187,209,140,208,183,209,143,209,132,208,190,209,128,209,131,208,188,208,\n176,208,162,208,181,208,191,208,181,209,128,209,140,208,188,208,181,209,129,209,\n143,209,134,208,176,208,183,208,176,209,137,208,184,209,130,209,139,208,155,209,\n131,209,135,209,136,208,184,208,181,224,164,168,224,164,185,224,165,128,224,164,\n130,224,164,149,224,164,176,224,164,168,224,165,135,224,164,133,224,164,170,224,\n164,168,224,165,135,224,164,149,224,164,191,224,164,175,224,164,190,224,164,149,\n224,164,176,224,165,135,224,164,130,224,164,133,224,164,168,224,165,141,224,164,\n175,224,164,149,224,165,141,224,164,175,224,164,190,224,164,151,224,164,190,224,\n164,135,224,164,161,224,164,172,224,164,190,224,164,176,224,165,135,224,164,149,\n224,164,191,224,164,184,224,165,128,224,164,166,224,164,191,224,164,175,224,164,\n190,224,164,170,224,164,185,224,164,178,224,165,135,224,164,184,224,164,191,224,\n164,130,224,164,185,224,164,173,224,164,190,224,164,176,224,164,164,224,164,133,\n224,164,170,224,164,168,224,165,128,224,164,181,224,164,190,224,164,178,224,165,\n135,224,164,184,224,165,135,224,164,181,224,164,190,224,164,149,224,164,176,224,\n164,164,224,165,135,224,164,174,224,165,135,224,164,176,224,165,135,224,164,185,\n224,165,139,224,164,168,224,165,135,224,164,184,224,164,149,224,164,164,224,165,\n135,224,164,172,224,164,185,224,165,129,224,164,164,224,164,184,224,164,190,224,\n164,135,224,164,159,224,164,185,224,165,139,224,164,151,224,164,190,224,164,156,\n224,164,190,224,164,168,224,165,135,224,164,174,224,164,191,224,164,168,224,164,\n159,224,164,149,224,164,176,224,164,164,224,164,190,224,164,149,224,164,176,224,\n164,168,224,164,190,224,164,137,224,164,168,224,164,149,224,165,135,224,164,175,\n224,164,185,224,164,190,224,164,129,224,164,184,224,164,172,224,164,184,224,165,\n135,224,164,173,224,164,190,224,164,183,224,164,190,224,164,134,224,164,170,224,\n164,149,224,165,135,224,164,178,224,164,191,224,164,175,224,165,135,224,164,182,\n224,165,129,224,164,176,224,165,130,224,164,135,224,164,184,224,164,149,224,165,\n135,224,164,152,224,164,130,224,164,159,224,165,135,224,164,174,224,165,135,224,\n164,176,224,165,128,224,164,184,224,164,149,224,164,164,224,164,190,224,164,174,\n224,165,135,224,164,176,224,164,190,224,164,178,224,165,135,224,164,149,224,164,\n176,224,164,133,224,164,167,224,164,191,224,164,149,224,164,133,224,164,170,224,\n164,168,224,164,190,224,164,184,224,164,174,224,164,190,224,164,156,224,164,174,\n224,165,129,224,164,157,224,165,135,224,164,149,224,164,190,224,164,176,224,164,\n163,224,164,185,224,165,139,224,164,164,224,164,190,224,164,149,224,164,161,224,\n164,188,224,165,128,224,164,175,224,164,185,224,164,190,224,164,130,224,164,185,\n224,165,139,224,164,159,224,164,178,224,164,182,224,164,172,224,165,141,224,164,\n166,224,164,178,224,164,191,224,164,175,224,164,190,224,164,156,224,165,128,224,\n164,181,224,164,168,224,164,156,224,164,190,224,164,164,224,164,190,224,164,149,\n224,165,136,224,164,184,224,165,135,224,164,134,224,164,170,224,164,149,224,164,\n190,224,164,181,224,164,190,224,164,178,224,165,128,224,164,166,224,165,135,224,\n164,168,224,165,135,224,164,170,224,165,130,224,164,176,224,165,128,224,164,170,\n224,164,190,224,164,168,224,165,128,224,164,137,224,164,184,224,164,149,224,165,\n135,224,164,185,224,165,139,224,164,151,224,165,128,224,164,172,224,165,136,224,\n164,160,224,164,149,224,164,134,224,164,170,224,164,149,224,165,128,224,164,181,\n224,164,176,224,165,141,224,164,183,224,164,151,224,164,190,224,164,130,224,164,\n181,224,164,134,224,164,170,224,164,149,224,165,139,224,164,156,224,164,191,224,\n164,178,224,164,190,224,164,156,224,164,190,224,164,168,224,164,190,224,164,184,\n224,164,185,224,164,174,224,164,164,224,164,185,224,164,174,224,165,135,224,164,\n130,224,164,137,224,164,168,224,164,149,224,165,128,224,164,175,224,164,190,224,\n164,185,224,165,130,224,164,166,224,164,176,224,165,141,224,164,156,224,164,184,\n224,165,130,224,164,154,224,165,128,224,164,170,224,164,184,224,164,130,224,164,\n166,224,164,184,224,164,181,224,164,190,224,164,178,224,164,185,224,165,139,224,\n164,168,224,164,190,224,164,185,224,165,139,224,164,164,224,165,128,224,164,156,\n224,165,136,224,164,184,224,165,135,224,164,181,224,164,190,224,164,170,224,164,\n184,224,164,156,224,164,168,224,164,164,224,164,190,224,164,168,224,165,135,224,\n164,164,224,164,190,224,164,156,224,164,190,224,164,176,224,165,128,224,164,152,\n224,164,190,224,164,175,224,164,178,224,164,156,224,164,191,224,164,178,224,165,\n135,224,164,168,224,165,128,224,164,154,224,165,135,224,164,156,224,164,190,224,\n164,130,224,164,154,224,164,170,224,164,164,224,165,141,224,164,176,224,164,151,\n224,165,130,224,164,151,224,164,178,224,164,156,224,164,190,224,164,164,224,165,\n135,224,164,172,224,164,190,224,164,185,224,164,176,224,164,134,224,164,170,224,\n164,168,224,165,135,224,164,181,224,164,190,224,164,185,224,164,168,224,164,135,\n224,164,184,224,164,149,224,164,190,224,164,184,224,165,129,224,164,172,224,164,\n185,224,164,176,224,164,185,224,164,168,224,165,135,224,164,135,224,164,184,224,\n164,184,224,165,135,224,164,184,224,164,185,224,164,191,224,164,164,224,164,172,\n224,164,161,224,164,188,224,165,135,224,164,152,224,164,159,224,164,168,224,164,\n190,224,164,164,224,164,178,224,164,190,224,164,182,224,164,170,224,164,190,224,\n164,130,224,164,154,224,164,182,224,165,141,224,164,176,224,165,128,224,164,172,\n224,164,161,224,164,188,224,165,128,224,164,185,224,165,139,224,164,164,224,165,\n135,224,164,184,224,164,190,224,164,136,224,164,159,224,164,182,224,164,190,224,\n164,175,224,164,166,224,164,184,224,164,149,224,164,164,224,165,128,224,164,156,\n224,164,190,224,164,164,224,165,128,224,164,181,224,164,190,224,164,178,224,164,\n190,224,164,185,224,164,156,224,164,190,224,164,176,224,164,170,224,164,159,224,\n164,168,224,164,190,224,164,176,224,164,150,224,164,168,224,165,135,224,164,184,\n224,164,161,224,164,188,224,164,149,224,164,174,224,164,191,224,164,178,224,164,\n190,224,164,137,224,164,184,224,164,149,224,165,128,224,164,149,224,165,135,224,\n164,181,224,164,178,224,164,178,224,164,151,224,164,164,224,164,190,224,164,150,\n224,164,190,224,164,168,224,164,190,224,164,133,224,164,176,224,165,141,224,164,\n165,224,164,156,224,164,185,224,164,190,224,164,130,224,164,166,224,165,135,224,\n164,150,224,164,190,224,164,170,224,164,185,224,164,178,224,165,128,224,164,168,\n224,164,191,224,164,175,224,164,174,224,164,172,224,164,191,224,164,168,224,164,\n190,224,164,172,224,165,136,224,164,130,224,164,149,224,164,149,224,164,185,224,\n165,128,224,164,130,224,164,149,224,164,185,224,164,168,224,164,190,224,164,166,\n224,165,135,224,164,164,224,164,190,224,164,185,224,164,174,224,164,178,224,165,\n135,224,164,149,224,164,190,224,164,171,224,165,128,224,164,156,224,164,172,224,\n164,149,224,164,191,224,164,164,224,165,129,224,164,176,224,164,164,224,164,174,\n224,164,190,224,164,130,224,164,151,224,164,181,224,164,185,224,165,128,224,164,\n130,224,164,176,224,165,139,224,164,156,224,164,188,224,164,174,224,164,191,224,\n164,178,224,165,128,224,164,134,224,164,176,224,165,139,224,164,170,224,164,184,\n224,165,135,224,164,168,224,164,190,224,164,175,224,164,190,224,164,166,224,164,\n181,224,164,178,224,165,135,224,164,168,224,165,135,224,164,150,224,164,190,224,\n164,164,224,164,190,224,164,149,224,164,176,224,165,128,224,164,172,224,164,137,\n224,164,168,224,164,149,224,164,190,224,164,156,224,164,181,224,164,190,224,164,\n172,224,164,170,224,165,130,224,164,176,224,164,190,224,164,172,224,164,161,224,\n164,188,224,164,190,224,164,184,224,165,140,224,164,166,224,164,190,224,164,182,\n224,165,135,224,164,175,224,164,176,224,164,149,224,164,191,224,164,175,224,165,\n135,224,164,149,224,164,185,224,164,190,224,164,130,224,164,133,224,164,149,224,\n164,184,224,164,176,224,164,172,224,164,168,224,164,190,224,164,143,224,164,181,\n224,164,185,224,164,190,224,164,130,224,164,184,224,165,141,224,164,165,224,164,\n178,224,164,174,224,164,191,224,164,178,224,165,135,224,164,178,224,165,135,224,\n164,150,224,164,149,224,164,181,224,164,191,224,164,183,224,164,175,224,164,149,\n224,165,141,224,164,176,224,164,130,224,164,184,224,164,174,224,165,130,224,164,\n185,224,164,165,224,164,190,224,164,168,224,164,190,216,170,216,179,216,170,216,\n183,217,138,216,185,217,133,216,180,216,167,216,177,217,131,216,169,216,168,217,\n136,216,167,216,179,216,183,216,169,216,167,217,132,216,181,217,129,216,173,216,\n169,217,133,217,136,216,167,216,182,217,138,216,185,216,167,217,132,216,174,216,\n167,216,181,216,169,216,167,217,132,217,133,216,178,217,138,216,175,216,167,217,\n132,216,185,216,167,217,133,216,169,216,167,217,132,217,131,216,167,216,170,216,\n168,216,167,217,132,216,177,216,175,217,136,216,175,216,168,216,177,217,134,216,\n167,217,133,216,172,216,167,217,132,216,175,217,136,217,132,216,169,216,167,217,\n132,216,185,216,167,217,132,217,133,216,167,217,132,217,133,217,136,217,130,216,\n185,216,167,217,132,216,185,216,177,216,168,217,138,216,167,217,132,216,179,216,\n177,217,138,216,185,216,167,217,132,216,172,217,136,216,167,217,132,216,167,217,\n132,216,176,217,135,216,167,216,168,216,167,217,132,216,173,217,138,216,167,216,\n169,216,167,217,132,216,173,217,130,217,136,217,130,216,167,217,132,217,131,216,\n177,217,138,217,133,216,167,217,132,216,185,216,177,216,167,217,130,217,133,216,\n173,217,129,217,136,216,184,216,169,216,167,217,132,216,171,216,167,217,134,217,\n138,217,133,216,180,216,167,217,135,216,175,216,169,216,167,217,132,217,133,216,\n177,216,163,216,169,216,167,217,132,217,130,216,177,216,162,217,134,216,167,217,\n132,216,180,216,168,216,167,216,168,216,167,217,132,216,173,217,136,216,167,216,\n177,216,167,217,132,216,172,216,175,217,138,216,175,216,167,217,132,216,163,216,\n179,216,177,216,169,216,167,217,132,216,185,217,132,217,136,217,133,217,133,216,\n172,217,133,217,136,216,185,216,169,216,167,217,132,216,177,216,173,217,133,217,\n134,216,167,217,132,217,134,217,130,216,167,216,183,217,129,217,132,216,179,216,\n183,217,138,217,134,216,167,217,132,217,131,217,136,217,138,216,170,216,167,217,\n132,216,175,217,134,217,138,216,167,216,168,216,177,217,131,216,167,216,170,217,\n135,216,167,217,132,216,177,217,138,216,167,216,182,216,170,216,173,217,138,216,\n167,216,170,217,138,216,168,216,170,217,136,217,130,217,138,216,170,216,167,217,\n132,216,163,217,136,217,132,217,137,216,167,217,132,216,168,216,177,217,138,216,\n175,216,167,217,132,217,131,217,132,216,167,217,133,216,167,217,132,216,177,216,\n167,216,168,216,183,216,167,217,132,216,180,216,174,216,181,217,138,216,179,217,\n138,216,167,216,177,216,167,216,170,216,167,217,132,216,171,216,167,217,132,216,\n171,216,167,217,132,216,181,217,132,216,167,216,169,216,167,217,132,216,173,216,\n175,217,138,216,171,216,167,217,132,216,178,217,136,216,167,216,177,216,167,217,\n132,216,174,217,132,217,138,216,172,216,167,217,132,216,172,217,133,217,138,216,\n185,216,167,217,132,216,185,216,167,217,133,217,135,216,167,217,132,216,172,217,\n133,216,167,217,132,216,167,217,132,216,179,216,167,216,185,216,169,217,133,216,\n180,216,167,217,135,216,175,217,135,216,167,217,132,216,177,216,166,217,138,216,\n179,216,167,217,132,216,175,216,174,217,136,217,132,216,167,217,132,217,129,217,\n134,217,138,216,169,216,167,217,132,217,131,216,170,216,167,216,168,216,167,217,\n132,216,175,217,136,216,177,217,138,216,167,217,132,216,175,216,177,217,136,216,\n179,216,167,216,179,216,170,216,186,216,177,217,130,216,170,216,181,216,167,217,\n133,217,138,217,133,216,167,217,132,216,168,217,134,216,167,216,170,216,167,217,\n132,216,185,216,184,217,138,217,133,101,110,116,101,114,116,97,105,110,109,101,\n110,116,117,110,100,101,114,115,116,97,110,100,105,110,103,32,61,32,102,117,110,\n99,116,105,111,110,40,41,46,106,112,103,34,32,119,105,100,116,104,61,34,99,111,\n110,102,105,103,117,114,97,116,105,111,110,46,112,110,103,34,32,119,105,100,116,\n104,61,34,60,98,111,100,121,32,99,108,97,115,115,61,34,77,97,116,104,46,114,97,\n110,100,111,109,40,41,99,111,110,116,101,109,112,111,114,97,114,121,32,85,110,\n105,116,101,100,32,83,116,97,116,101,115,99,105,114,99,117,109,115,116,97,110,99\n,101,115,46,97,112,112,101,110,100,67,104,105,108,100,40,111,114,103,97,110,105,\n122,97,116,105,111,110,115,60,115,112,97,110,32,99,108,97,115,115,61,34,34,62,60\n,105,109,103,32,115,114,99,61,34,47,100,105,115,116,105,110,103,117,105,115,104,\n101,100,116,104,111,117,115,97,110,100,115,32,111,102,32,99,111,109,109,117,110,\n105,99,97,116,105,111,110,99,108,101,97,114,34,62,60,47,100,105,118,62,105,110,\n118,101,115,116,105,103,97,116,105,111,110,102,97,118,105,99,111,110,46,105,99,\n111,34,32,109,97,114,103,105,110,45,114,105,103,104,116,58,98,97,115,101,100,32,\n111,110,32,116,104,101,32,77,97,115,115,97,99,104,117,115,101,116,116,115,116,97\n,98,108,101,32,98,111,114,100,101,114,61,105,110,116,101,114,110,97,116,105,111,\n110,97,108,97,108,115,111,32,107,110,111,119,110,32,97,115,112,114,111,110,117,\n110,99,105,97,116,105,111,110,98,97,99,107,103,114,111,117,110,100,58,35,102,112\n,97,100,100,105,110,103,45,108,101,102,116,58,70,111,114,32,101,120,97,109,112,\n108,101,44,32,109,105,115,99,101,108,108,97,110,101,111,117,115,38,108,116,59,47\n,109,97,116,104,38,103,116,59,112,115,121,99,104,111,108,111,103,105,99,97,108,\n105,110,32,112,97,114,116,105,99,117,108,97,114,101,97,114,99,104,34,32,116,121,\n112,101,61,34,102,111,114,109,32,109,101,116,104,111,100,61,34,97,115,32,111,112\n,112,111,115,101,100,32,116,111,83,117,112,114,101,109,101,32,67,111,117,114,116\n,111,99,99,97,115,105,111,110,97,108,108,121,32,65,100,100,105,116,105,111,110,\n97,108,108,121,44,78,111,114,116,104,32,65,109,101,114,105,99,97,112,120,59,98,\n97,99,107,103,114,111,117,110,100,111,112,112,111,114,116,117,110,105,116,105,\n101,115,69,110,116,101,114,116,97,105,110,109,101,110,116,46,116,111,76,111,119,\n101,114,67,97,115,101,40,109,97,110,117,102,97,99,116,117,114,105,110,103,112,\n114,111,102,101,115,115,105,111,110,97,108,32,99,111,109,98,105,110,101,100,32,\n119,105,116,104,70,111,114,32,105,110,115,116,97,110,99,101,44,99,111,110,115,\n105,115,116,105,110,103,32,111,102,34,32,109,97,120,108,101,110,103,116,104,61,\n34,114,101,116,117,114,110,32,102,97,108,115,101,59,99,111,110,115,99,105,111,\n117,115,110,101,115,115,77,101,100,105,116,101,114,114,97,110,101,97,110,101,120\n,116,114,97,111,114,100,105,110,97,114,121,97,115,115,97,115,115,105,110,97,116,\n105,111,110,115,117,98,115,101,113,117,101,110,116,108,121,32,98,117,116,116,111\n,110,32,116,121,112,101,61,34,116,104,101,32,110,117,109,98,101,114,32,111,102,\n116,104,101,32,111,114,105,103,105,110,97,108,32,99,111,109,112,114,101,104,101,\n110,115,105,118,101,114,101,102,101,114,115,32,116,111,32,116,104,101,60,47,117,\n108,62,10,60,47,100,105,118,62,10,112,104,105,108,111,115,111,112,104,105,99,97,\n108,108,111,99,97,116,105,111,110,46,104,114,101,102,119,97,115,32,112,117,98,\n108,105,115,104,101,100,83,97,110,32,70,114,97,110,99,105,115,99,111,40,102,117,\n110,99,116,105,111,110,40,41,123,10,60,100,105,118,32,105,100,61,34,109,97,105,\n110,115,111,112,104,105,115,116,105,99,97,116,101,100,109,97,116,104,101,109,97,\n116,105,99,97,108,32,47,104,101,97,100,62,13,10,60,98,111,100,121,115,117,103,\n103,101,115,116,115,32,116,104,97,116,100,111,99,117,109,101,110,116,97,116,105,\n111,110,99,111,110,99,101,110,116,114,97,116,105,111,110,114,101,108,97,116,105,\n111,110,115,104,105,112,115,109,97,121,32,104,97,118,101,32,98,101,101,110,40,\n102,111,114,32,101,120,97,109,112,108,101,44,84,104,105,115,32,97,114,116,105,99\n,108,101,32,105,110,32,115,111,109,101,32,99,97,115,101,115,112,97,114,116,115,\n32,111,102,32,116,104,101,32,100,101,102,105,110,105,116,105,111,110,32,111,102,\n71,114,101,97,116,32,66,114,105,116,97,105,110,32,99,101,108,108,112,97,100,100,\n105,110,103,61,101,113,117,105,118,97,108,101,110,116,32,116,111,112,108,97,99,\n101,104,111,108,100,101,114,61,34,59,32,102,111,110,116,45,115,105,122,101,58,32\n,106,117,115,116,105,102,105,99,97,116,105,111,110,98,101,108,105,101,118,101,\n100,32,116,104,97,116,115,117,102,102,101,114,101,100,32,102,114,111,109,97,116,\n116,101,109,112,116,101,100,32,116,111,32,108,101,97,100,101,114,32,111,102,32,\n116,104,101,99,114,105,112,116,34,32,115,114,99,61,34,47,40,102,117,110,99,116,\n105,111,110,40,41,32,123,97,114,101,32,97,118,97,105,108,97,98,108,101,10,9,60,\n108,105,110,107,32,114,101,108,61,34,32,115,114,99,61,39,104,116,116,112,58,47,\n47,105,110,116,101,114,101,115,116,101,100,32,105,110,99,111,110,118,101,110,116\n,105,111,110,97,108,32,34,32,97,108,116,61,34,34,32,47,62,60,47,97,114,101,32,\n103,101,110,101,114,97,108,108,121,104,97,115,32,97,108,115,111,32,98,101,101,\n110,109,111,115,116,32,112,111,112,117,108,97,114,32,99,111,114,114,101,115,112,\n111,110,100,105,110,103,99,114,101,100,105,116,101,100,32,119,105,116,104,116,\n121,108,101,61,34,98,111,114,100,101,114,58,60,47,97,62,60,47,115,112,97,110,62,\n60,47,46,103,105,102,34,32,119,105,100,116,104,61,34,60,105,102,114,97,109,101,\n32,115,114,99,61,34,116,97,98,108,101,32,99,108,97,115,115,61,34,105,110,108,105\n,110,101,45,98,108,111,99,107,59,97,99,99,111,114,100,105,110,103,32,116,111,32,\n116,111,103,101,116,104,101,114,32,119,105,116,104,97,112,112,114,111,120,105,\n109,97,116,101,108,121,112,97,114,108,105,97,109,101,110,116,97,114,121,109,111,\n114,101,32,97,110,100,32,109,111,114,101,100,105,115,112,108,97,121,58,110,111,\n110,101,59,116,114,97,100,105,116,105,111,110,97,108,108,121,112,114,101,100,111\n,109,105,110,97,110,116,108,121,38,110,98,115,112,59,124,38,110,98,115,112,59,38\n,110,98,115,112,59,60,47,115,112,97,110,62,32,99,101,108,108,115,112,97,99,105,\n110,103,61,60,105,110,112,117,116,32,110,97,109,101,61,34,111,114,34,32,99,111,\n110,116,101,110,116,61,34,99,111,110,116,114,111,118,101,114,115,105,97,108,112,\n114,111,112,101,114,116,121,61,34,111,103,58,47,120,45,115,104,111,99,107,119,97\n,118,101,45,100,101,109,111,110,115,116,114,97,116,105,111,110,115,117,114,114,\n111,117,110,100,101,100,32,98,121,78,101,118,101,114,116,104,101,108,101,115,115\n,44,119,97,115,32,116,104,101,32,102,105,114,115,116,99,111,110,115,105,100,101,\n114,97,98,108,101,32,65,108,116,104,111,117,103,104,32,116,104,101,32,99,111,108\n,108,97,98,111,114,97,116,105,111,110,115,104,111,117,108,100,32,110,111,116,32,\n98,101,112,114,111,112,111,114,116,105,111,110,32,111,102,60,115,112,97,110,32,\n115,116,121,108,101,61,34,107,110,111,119,110,32,97,115,32,116,104,101,32,115,\n104,111,114,116,108,121,32,97,102,116,101,114,102,111,114,32,105,110,115,116,97,\n110,99,101,44,100,101,115,99,114,105,98,101,100,32,97,115,32,47,104,101,97,100,\n62,10,60,98,111,100,121,32,115,116,97,114,116,105,110,103,32,119,105,116,104,105\n,110,99,114,101,97,115,105,110,103,108,121,32,116,104,101,32,102,97,99,116,32,\n116,104,97,116,100,105,115,99,117,115,115,105,111,110,32,111,102,109,105,100,100\n,108,101,32,111,102,32,116,104,101,97,110,32,105,110,100,105,118,105,100,117,97,\n108,100,105,102,102,105,99,117,108,116,32,116,111,32,112,111,105,110,116,32,111,\n102,32,118,105,101,119,104,111,109,111,115,101,120,117,97,108,105,116,121,97,99,\n99,101,112,116,97,110,99,101,32,111,102,60,47,115,112,97,110,62,60,47,100,105,\n118,62,109,97,110,117,102,97,99,116,117,114,101,114,115,111,114,105,103,105,110,\n32,111,102,32,116,104,101,99,111,109,109,111,110,108,121,32,117,115,101,100,105,\n109,112,111,114,116,97,110,99,101,32,111,102,100,101,110,111,109,105,110,97,116,\n105,111,110,115,98,97,99,107,103,114,111,117,110,100,58,32,35,108,101,110,103,\n116,104,32,111,102,32,116,104,101,100,101,116,101,114,109,105,110,97,116,105,111\n,110,97,32,115,105,103,110,105,102,105,99,97,110,116,34,32,98,111,114,100,101,\n114,61,34,48,34,62,114,101,118,111,108,117,116,105,111,110,97,114,121,112,114,\n105,110,99,105,112,108,101,115,32,111,102,105,115,32,99,111,110,115,105,100,101,\n114,101,100,119,97,115,32,100,101,118,101,108,111,112,101,100,73,110,100,111,45,\n69,117,114,111,112,101,97,110,118,117,108,110,101,114,97,98,108,101,32,116,111,\n112,114,111,112,111,110,101,110,116,115,32,111,102,97,114,101,32,115,111,109,101\n,116,105,109,101,115,99,108,111,115,101,114,32,116,111,32,116,104,101,78,101,119\n,32,89,111,114,107,32,67,105,116,121,32,110,97,109,101,61,34,115,101,97,114,99,\n104,97,116,116,114,105,98,117,116,101,100,32,116,111,99,111,117,114,115,101,32,\n111,102,32,116,104,101,109,97,116,104,101,109,97,116,105,99,105,97,110,98,121,32\n,116,104,101,32,101,110,100,32,111,102,97,116,32,116,104,101,32,101,110,100,32,\n111,102,34,32,98,111,114,100,101,114,61,34,48,34,32,116,101,99,104,110,111,108,\n111,103,105,99,97,108,46,114,101,109,111,118,101,67,108,97,115,115,40,98,114,97,\n110,99,104,32,111,102,32,116,104,101,101,118,105,100,101,110,99,101,32,116,104,\n97,116,33,91,101,110,100,105,102,93,45,45,62,13,10,73,110,115,116,105,116,117,\n116,101,32,111,102,32,105,110,116,111,32,97,32,115,105,110,103,108,101,114,101,\n115,112,101,99,116,105,118,101,108,121,46,97,110,100,32,116,104,101,114,101,102,\n111,114,101,112,114,111,112,101,114,116,105,101,115,32,111,102,105,115,32,108,\n111,99,97,116,101,100,32,105,110,115,111,109,101,32,111,102,32,119,104,105,99,\n104,84,104,101,114,101,32,105,115,32,97,108,115,111,99,111,110,116,105,110,117,\n101,100,32,116,111,32,97,112,112,101,97,114,97,110,99,101,32,111,102,32,38,97,\n109,112,59,110,100,97,115,104,59,32,100,101,115,99,114,105,98,101,115,32,116,104\n,101,99,111,110,115,105,100,101,114,97,116,105,111,110,97,117,116,104,111,114,32\n,111,102,32,116,104,101,105,110,100,101,112,101,110,100,101,110,116,108,121,101,\n113,117,105,112,112,101,100,32,119,105,116,104,100,111,101,115,32,110,111,116,32\n,104,97,118,101,60,47,97,62,60,97,32,104,114,101,102,61,34,99,111,110,102,117,\n115,101,100,32,119,105,116,104,60,108,105,110,107,32,104,114,101,102,61,34,47,97\n,116,32,116,104,101,32,97,103,101,32,111,102,97,112,112,101,97,114,32,105,110,32\n,116,104,101,84,104,101,115,101,32,105,110,99,108,117,100,101,114,101,103,97,114\n,100,108,101,115,115,32,111,102,99,111,117,108,100,32,98,101,32,117,115,101,100,\n32,115,116,121,108,101,61,38,113,117,111,116,59,115,101,118,101,114,97,108,32,\n116,105,109,101,115,114,101,112,114,101,115,101,110,116,32,116,104,101,98,111,\n100,121,62,10,60,47,104,116,109,108,62,116,104,111,117,103,104,116,32,116,111,32\n,98,101,112,111,112,117,108,97,116,105,111,110,32,111,102,112,111,115,115,105,98\n,105,108,105,116,105,101,115,112,101,114,99,101,110,116,97,103,101,32,111,102,97\n,99,99,101,115,115,32,116,111,32,116,104,101,97,110,32,97,116,116,101,109,112,\n116,32,116,111,112,114,111,100,117,99,116,105,111,110,32,111,102,106,113,117,101\n,114,121,47,106,113,117,101,114,121,116,119,111,32,100,105,102,102,101,114,101,\n110,116,98,101,108,111,110,103,32,116,111,32,116,104,101,101,115,116,97,98,108,\n105,115,104,109,101,110,116,114,101,112,108,97,99,105,110,103,32,116,104,101,100\n,101,115,99,114,105,112,116,105,111,110,34,32,100,101,116,101,114,109,105,110,\n101,32,116,104,101,97,118,97,105,108,97,98,108,101,32,102,111,114,65,99,99,111,\n114,100,105,110,103,32,116,111,32,119,105,100,101,32,114,97,110,103,101,32,111,\n102,9,60,100,105,118,32,99,108,97,115,115,61,34,109,111,114,101,32,99,111,109,\n109,111,110,108,121,111,114,103,97,110,105,115,97,116,105,111,110,115,102,117,\n110,99,116,105,111,110,97,108,105,116,121,119,97,115,32,99,111,109,112,108,101,\n116,101,100,32,38,97,109,112,59,109,100,97,115,104,59,32,112,97,114,116,105,99,\n105,112,97,116,105,111,110,116,104,101,32,99,104,97,114,97,99,116,101,114,97,110\n,32,97,100,100,105,116,105,111,110,97,108,97,112,112,101,97,114,115,32,116,111,\n32,98,101,102,97,99,116,32,116,104,97,116,32,116,104,101,97,110,32,101,120,97,\n109,112,108,101,32,111,102,115,105,103,110,105,102,105,99,97,110,116,108,121,111\n,110,109,111,117,115,101,111,118,101,114,61,34,98,101,99,97,117,115,101,32,116,\n104,101,121,32,97,115,121,110,99,32,61,32,116,114,117,101,59,112,114,111,98,108,\n101,109,115,32,119,105,116,104,115,101,101,109,115,32,116,111,32,104,97,118,101,\n116,104,101,32,114,101,115,117,108,116,32,111,102,32,115,114,99,61,34,104,116,\n116,112,58,47,47,102,97,109,105,108,105,97,114,32,119,105,116,104,112,111,115,\n115,101,115,115,105,111,110,32,111,102,102,117,110,99,116,105,111,110,32,40,41,\n32,123,116,111,111,107,32,112,108,97,99,101,32,105,110,97,110,100,32,115,111,109\n,101,116,105,109,101,115,115,117,98,115,116,97,110,116,105,97,108,108,121,60,115\n,112,97,110,62,60,47,115,112,97,110,62,105,115,32,111,102,116,101,110,32,117,115\n,101,100,105,110,32,97,110,32,97,116,116,101,109,112,116,103,114,101,97,116,32,\n100,101,97,108,32,111,102,69,110,118,105,114,111,110,109,101,110,116,97,108,115,\n117,99,99,101,115,115,102,117,108,108,121,32,118,105,114,116,117,97,108,108,121,\n32,97,108,108,50,48,116,104,32,99,101,110,116,117,114,121,44,112,114,111,102,101\n,115,115,105,111,110,97,108,115,110,101,99,101,115,115,97,114,121,32,116,111,32,\n100,101,116,101,114,109,105,110,101,100,32,98,121,99,111,109,112,97,116,105,98,\n105,108,105,116,121,98,101,99,97,117,115,101,32,105,116,32,105,115,68,105,99,116\n,105,111,110,97,114,121,32,111,102,109,111,100,105,102,105,99,97,116,105,111,110\n,115,84,104,101,32,102,111,108,108,111,119,105,110,103,109,97,121,32,114,101,102\n,101,114,32,116,111,58,67,111,110,115,101,113,117,101,110,116,108,121,44,73,110,\n116,101,114,110,97,116,105,111,110,97,108,97,108,116,104,111,117,103,104,32,115,\n111,109,101,116,104,97,116,32,119,111,117,108,100,32,98,101,119,111,114,108,100,\n39,115,32,102,105,114,115,116,99,108,97,115,115,105,102,105,101,100,32,97,115,98\n,111,116,116,111,109,32,111,102,32,116,104,101,40,112,97,114,116,105,99,117,108,\n97,114,108,121,97,108,105,103,110,61,34,108,101,102,116,34,32,109,111,115,116,32\n,99,111,109,109,111,110,108,121,98,97,115,105,115,32,102,111,114,32,116,104,101,\n102,111,117,110,100,97,116,105,111,110,32,111,102,99,111,110,116,114,105,98,117,\n116,105,111,110,115,112,111,112,117,108,97,114,105,116,121,32,111,102,99,101,110\n,116,101,114,32,111,102,32,116,104,101,116,111,32,114,101,100,117,99,101,32,116,\n104,101,106,117,114,105,115,100,105,99,116,105,111,110,115,97,112,112,114,111,\n120,105,109,97,116,105,111,110,32,111,110,109,111,117,115,101,111,117,116,61,34,\n78,101,119,32,84,101,115,116,97,109,101,110,116,99,111,108,108,101,99,116,105,\n111,110,32,111,102,60,47,115,112,97,110,62,60,47,97,62,60,47,105,110,32,116,104,\n101,32,85,110,105,116,101,100,102,105,108,109,32,100,105,114,101,99,116,111,114,\n45,115,116,114,105,99,116,46,100,116,100,34,62,104,97,115,32,98,101,101,110,32,\n117,115,101,100,114,101,116,117,114,110,32,116,111,32,116,104,101,97,108,116,104\n,111,117,103,104,32,116,104,105,115,99,104,97,110,103,101,32,105,110,32,116,104,\n101,115,101,118,101,114,97,108,32,111,116,104,101,114,98,117,116,32,116,104,101,\n114,101,32,97,114,101,117,110,112,114,101,99,101,100,101,110,116,101,100,105,115\n,32,115,105,109,105,108,97,114,32,116,111,101,115,112,101,99,105,97,108,108,121,\n32,105,110,119,101,105,103,104,116,58,32,98,111,108,100,59,105,115,32,99,97,108,\n108,101,100,32,116,104,101,99,111,109,112,117,116,97,116,105,111,110,97,108,105,\n110,100,105,99,97,116,101,32,116,104,97,116,114,101,115,116,114,105,99,116,101,\n100,32,116,111,9,60,109,101,116,97,32,110,97,109,101,61,34,97,114,101,32,116,121\n,112,105,99,97,108,108,121,99,111,110,102,108,105,99,116,32,119,105,116,104,72,\n111,119,101,118,101,114,44,32,116,104,101,32,65,110,32,101,120,97,109,112,108,\n101,32,111,102,99,111,109,112,97,114,101,100,32,119,105,116,104,113,117,97,110,\n116,105,116,105,101,115,32,111,102,114,97,116,104,101,114,32,116,104,97,110,32,\n97,99,111,110,115,116,101,108,108,97,116,105,111,110,110,101,99,101,115,115,97,\n114,121,32,102,111,114,114,101,112,111,114,116,101,100,32,116,104,97,116,115,112\n,101,99,105,102,105,99,97,116,105,111,110,112,111,108,105,116,105,99,97,108,32,\n97,110,100,38,110,98,115,112,59,38,110,98,115,112,59,60,114,101,102,101,114,101,\n110,99,101,115,32,116,111,116,104,101,32,115,97,109,101,32,121,101,97,114,71,111\n,118,101,114,110,109,101,110,116,32,111,102,103,101,110,101,114,97,116,105,111,\n110,32,111,102,104,97,118,101,32,110,111,116,32,98,101,101,110,115,101,118,101,\n114,97,108,32,121,101,97,114,115,99,111,109,109,105,116,109,101,110,116,32,116,\n111,9,9,60,117,108,32,99,108,97,115,115,61,34,118,105,115,117,97,108,105,122,97,\n116,105,111,110,49,57,116,104,32,99,101,110,116,117,114,121,44,112,114,97,99,116\n,105,116,105,111,110,101,114,115,116,104,97,116,32,104,101,32,119,111,117,108,\n100,97,110,100,32,99,111,110,116,105,110,117,101,100,111,99,99,117,112,97,116,\n105,111,110,32,111,102,105,115,32,100,101,102,105,110,101,100,32,97,115,99,101,\n110,116,114,101,32,111,102,32,116,104,101,116,104,101,32,97,109,111,117,110,116,\n32,111,102,62,60,100,105,118,32,115,116,121,108,101,61,34,101,113,117,105,118,97\n,108,101,110,116,32,111,102,100,105,102,102,101,114,101,110,116,105,97,116,101,\n98,114,111,117,103,104,116,32,97,98,111,117,116,109,97,114,103,105,110,45,108,\n101,102,116,58,32,97,117,116,111,109,97,116,105,99,97,108,108,121,116,104,111,\n117,103,104,116,32,111,102,32,97,115,83,111,109,101,32,111,102,32,116,104,101,\n115,101,10,60,100,105,118,32,99,108,97,115,115,61,34,105,110,112,117,116,32,99,\n108,97,115,115,61,34,114,101,112,108,97,99,101,100,32,119,105,116,104,105,115,32\n,111,110,101,32,111,102,32,116,104,101,101,100,117,99,97,116,105,111,110,32,97,\n110,100,105,110,102,108,117,101,110,99,101,100,32,98,121,114,101,112,117,116,97,\n116,105,111,110,32,97,115,10,60,109,101,116,97,32,110,97,109,101,61,34,97,99,99,\n111,109,109,111,100,97,116,105,111,110,60,47,100,105,118,62,10,60,47,100,105,118\n,62,108,97,114,103,101,32,112,97,114,116,32,111,102,73,110,115,116,105,116,117,\n116,101,32,102,111,114,116,104,101,32,115,111,45,99,97,108,108,101,100,32,97,103\n,97,105,110,115,116,32,116,104,101,32,73,110,32,116,104,105,115,32,99,97,115,101\n,44,119,97,115,32,97,112,112,111,105,110,116,101,100,99,108,97,105,109,101,100,\n32,116,111,32,98,101,72,111,119,101,118,101,114,44,32,116,104,105,115,68,101,112\n,97,114,116,109,101,110,116,32,111,102,116,104,101,32,114,101,109,97,105,110,105\n,110,103,101,102,102,101,99,116,32,111,110,32,116,104,101,112,97,114,116,105,99,\n117,108,97,114,108,121,32,100,101,97,108,32,119,105,116,104,32,116,104,101,10,60\n,100,105,118,32,115,116,121,108,101,61,34,97,108,109,111,115,116,32,97,108,119,\n97,121,115,97,114,101,32,99,117,114,114,101,110,116,108,121,101,120,112,114,101,\n115,115,105,111,110,32,111,102,112,104,105,108,111,115,111,112,104,121,32,111,\n102,102,111,114,32,109,111,114,101,32,116,104,97,110,99,105,118,105,108,105,122,\n97,116,105,111,110,115,111,110,32,116,104,101,32,105,115,108,97,110,100,115,101,\n108,101,99,116,101,100,73,110,100,101,120,99,97,110,32,114,101,115,117,108,116,\n32,105,110,34,32,118,97,108,117,101,61,34,34,32,47,62,116,104,101,32,115,116,114\n,117,99,116,117,114,101,32,47,62,60,47,97,62,60,47,100,105,118,62,77,97,110,121,\n32,111,102,32,116,104,101,115,101,99,97,117,115,101,100,32,98,121,32,116,104,101\n,111,102,32,116,104,101,32,85,110,105,116,101,100,115,112,97,110,32,99,108,97,\n115,115,61,34,109,99,97,110,32,98,101,32,116,114,97,99,101,100,105,115,32,114,\n101,108,97,116,101,100,32,116,111,98,101,99,97,109,101,32,111,110,101,32,111,102\n,105,115,32,102,114,101,113,117,101,110,116,108,121,108,105,118,105,110,103,32,\n105,110,32,116,104,101,116,104,101,111,114,101,116,105,99,97,108,108,121,70,111,\n108,108,111,119,105,110,103,32,116,104,101,82,101,118,111,108,117,116,105,111,\n110,97,114,121,103,111,118,101,114,110,109,101,110,116,32,105,110,105,115,32,100\n,101,116,101,114,109,105,110,101,100,116,104,101,32,112,111,108,105,116,105,99,\n97,108,105,110,116,114,111,100,117,99,101,100,32,105,110,115,117,102,102,105,99,\n105,101,110,116,32,116,111,100,101,115,99,114,105,112,116,105,111,110,34,62,115,\n104,111,114,116,32,115,116,111,114,105,101,115,115,101,112,97,114,97,116,105,111\n,110,32,111,102,97,115,32,116,111,32,119,104,101,116,104,101,114,107,110,111,119\n,110,32,102,111,114,32,105,116,115,119,97,115,32,105,110,105,116,105,97,108,108,\n121,100,105,115,112,108,97,121,58,98,108,111,99,107,105,115,32,97,110,32,101,120\n,97,109,112,108,101,116,104,101,32,112,114,105,110,99,105,112,97,108,99,111,110,\n115,105,115,116,115,32,111,102,32,97,114,101,99,111,103,110,105,122,101,100,32,\n97,115,47,98,111,100,121,62,60,47,104,116,109,108,62,97,32,115,117,98,115,116,97\n,110,116,105,97,108,114,101,99,111,110,115,116,114,117,99,116,101,100,104,101,97\n,100,32,111,102,32,115,116,97,116,101,114,101,115,105,115,116,97,110,99,101,32,\n116,111,117,110,100,101,114,103,114,97,100,117,97,116,101,84,104,101,114,101,32,\n97,114,101,32,116,119,111,103,114,97,118,105,116,97,116,105,111,110,97,108,97,\n114,101,32,100,101,115,99,114,105,98,101,100,105,110,116,101,110,116,105,111,110\n,97,108,108,121,115,101,114,118,101,100,32,97,115,32,116,104,101,99,108,97,115,\n115,61,34,104,101,97,100,101,114,111,112,112,111,115,105,116,105,111,110,32,116,\n111,102,117,110,100,97,109,101,110,116,97,108,108,121,100,111,109,105,110,97,116\n,101,100,32,116,104,101,97,110,100,32,116,104,101,32,111,116,104,101,114,97,108,\n108,105,97,110,99,101,32,119,105,116,104,119,97,115,32,102,111,114,99,101,100,32\n,116,111,114,101,115,112,101,99,116,105,118,101,108,121,44,97,110,100,32,112,111\n,108,105,116,105,99,97,108,105,110,32,115,117,112,112,111,114,116,32,111,102,112\n,101,111,112,108,101,32,105,110,32,116,104,101,50,48,116,104,32,99,101,110,116,\n117,114,121,46,97,110,100,32,112,117,98,108,105,115,104,101,100,108,111,97,100,\n67,104,97,114,116,98,101,97,116,116,111,32,117,110,100,101,114,115,116,97,110,\n100,109,101,109,98,101,114,32,115,116,97,116,101,115,101,110,118,105,114,111,110\n,109,101,110,116,97,108,102,105,114,115,116,32,104,97,108,102,32,111,102,99,111,\n117,110,116,114,105,101,115,32,97,110,100,97,114,99,104,105,116,101,99,116,117,\n114,97,108,98,101,32,99,111,110,115,105,100,101,114,101,100,99,104,97,114,97,99,\n116,101,114,105,122,101,100,99,108,101,97,114,73,110,116,101,114,118,97,108,97,\n117,116,104,111,114,105,116,97,116,105,118,101,70,101,100,101,114,97,116,105,111\n,110,32,111,102,119,97,115,32,115,117,99,99,101,101,100,101,100,97,110,100,32,\n116,104,101,114,101,32,97,114,101,97,32,99,111,110,115,101,113,117,101,110,99,\n101,116,104,101,32,80,114,101,115,105,100,101,110,116,97,108,115,111,32,105,110,\n99,108,117,100,101,100,102,114,101,101,32,115,111,102,116,119,97,114,101,115,117\n,99,99,101,115,115,105,111,110,32,111,102,100,101,118,101,108,111,112,101,100,32\n,116,104,101,119,97,115,32,100,101,115,116,114,111,121,101,100,97,119,97,121,32,\n102,114,111,109,32,116,104,101,59,10,60,47,115,99,114,105,112,116,62,10,60,97,\n108,116,104,111,117,103,104,32,116,104,101,121,102,111,108,108,111,119,101,100,\n32,98,121,32,97,109,111,114,101,32,112,111,119,101,114,102,117,108,114,101,115,\n117,108,116,101,100,32,105,110,32,97,85,110,105,118,101,114,115,105,116,121,32,\n111,102,72,111,119,101,118,101,114,44,32,109,97,110,121,116,104,101,32,112,114,\n101,115,105,100,101,110,116,72,111,119,101,118,101,114,44,32,115,111,109,101,105\n,115,32,116,104,111,117,103,104,116,32,116,111,117,110,116,105,108,32,116,104,\n101,32,101,110,100,119,97,115,32,97,110,110,111,117,110,99,101,100,97,114,101,32\n,105,109,112,111,114,116,97,110,116,97,108,115,111,32,105,110,99,108,117,100,101\n,115,62,60,105,110,112,117,116,32,116,121,112,101,61,116,104,101,32,99,101,110,\n116,101,114,32,111,102,32,68,79,32,78,79,84,32,65,76,84,69,82,117,115,101,100,32\n,116,111,32,114,101,102,101,114,116,104,101,109,101,115,47,63,115,111,114,116,61\n,116,104,97,116,32,104,97,100,32,98,101,101,110,116,104,101,32,98,97,115,105,115\n,32,102,111,114,104,97,115,32,100,101,118,101,108,111,112,101,100,105,110,32,116\n,104,101,32,115,117,109,109,101,114,99,111,109,112,97,114,97,116,105,118,101,108\n,121,100,101,115,99,114,105,98,101,100,32,116,104,101,115,117,99,104,32,97,115,\n32,116,104,111,115,101,116,104,101,32,114,101,115,117,108,116,105,110,103,105,\n115,32,105,109,112,111,115,115,105,98,108,101,118,97,114,105,111,117,115,32,111,\n116,104,101,114,83,111,117,116,104,32,65,102,114,105,99,97,110,104,97,118,101,32\n,116,104,101,32,115,97,109,101,101,102,102,101,99,116,105,118,101,110,101,115,\n115,105,110,32,119,104,105,99,104,32,99,97,115,101,59,32,116,101,120,116,45,97,\n108,105,103,110,58,115,116,114,117,99,116,117,114,101,32,97,110,100,59,32,98,97,\n99,107,103,114,111,117,110,100,58,114,101,103,97,114,100,105,110,103,32,116,104,\n101,115,117,112,112,111,114,116,101,100,32,116,104,101,105,115,32,97,108,115,111\n,32,107,110,111,119,110,115,116,121,108,101,61,34,109,97,114,103,105,110,105,110\n,99,108,117,100,105,110,103,32,116,104,101,98,97,104,97,115,97,32,77,101,108,97,\n121,117,110,111,114,115,107,32,98,111,107,109,195,165,108,110,111,114,115,107,32\n,110,121,110,111,114,115,107,115,108,111,118,101,110,197,161,196,141,105,110,97,\n105,110,116,101,114,110,97,99,105,111,110,97,108,99,97,108,105,102,105,99,97,99,\n105,195,179,110,99,111,109,117,110,105,99,97,99,105,195,179,110,99,111,110,115,\n116,114,117,99,99,105,195,179,110,34,62,60,100,105,118,32,99,108,97,115,115,61,\n34,100,105,115,97,109,98,105,103,117,97,116,105,111,110,68,111,109,97,105,110,78\n,97,109,101,39,44,32,39,97,100,109,105,110,105,115,116,114,97,116,105,111,110,\n115,105,109,117,108,116,97,110,101,111,117,115,108,121,116,114,97,110,115,112,\n111,114,116,97,116,105,111,110,73,110,116,101,114,110,97,116,105,111,110,97,108,\n32,109,97,114,103,105,110,45,98,111,116,116,111,109,58,114,101,115,112,111,110,\n115,105,98,105,108,105,116,121,60,33,91,101,110,100,105,102,93,45,45,62,10,60,47\n,62,60,109,101,116,97,32,110,97,109,101,61,34,105,109,112,108,101,109,101,110,\n116,97,116,105,111,110,105,110,102,114,97,115,116,114,117,99,116,117,114,101,114\n,101,112,114,101,115,101,110,116,97,116,105,111,110,98,111,114,100,101,114,45,98\n,111,116,116,111,109,58,60,47,104,101,97,100,62,10,60,98,111,100,121,62,61,104,\n116,116,112,37,51,65,37,50,70,37,50,70,60,102,111,114,109,32,109,101,116,104,111\n,100,61,34,109,101,116,104,111,100,61,34,112,111,115,116,34,32,47,102,97,118,105\n,99,111,110,46,105,99,111,34,32,125,41,59,10,60,47,115,99,114,105,112,116,62,10,\n46,115,101,116,65,116,116,114,105,98,117,116,101,40,65,100,109,105,110,105,115,\n116,114,97,116,105,111,110,61,32,110,101,119,32,65,114,114,97,121,40,41,59,60,33\n,91,101,110,100,105,102,93,45,45,62,13,10,100,105,115,112,108,97,121,58,98,108,\n111,99,107,59,85,110,102,111,114,116,117,110,97,116,101,108,121,44,34,62,38,110,\n98,115,112,59,60,47,100,105,118,62,47,102,97,118,105,99,111,110,46,105,99,111,34\n,62,61,39,115,116,121,108,101,115,104,101,101,116,39,32,105,100,101,110,116,105,\n102,105,99,97,116,105,111,110,44,32,102,111,114,32,101,120,97,109,112,108,101,44\n,60,108,105,62,60,97,32,104,114,101,102,61,34,47,97,110,32,97,108,116,101,114,\n110,97,116,105,118,101,97,115,32,97,32,114,101,115,117,108,116,32,111,102,112,\n116,34,62,60,47,115,99,114,105,112,116,62,10,116,121,112,101,61,34,115,117,98,\n109,105,116,34,32,10,40,102,117,110,99,116,105,111,110,40,41,32,123,114,101,99,\n111,109,109,101,110,100,97,116,105,111,110,102,111,114,109,32,97,99,116,105,111,\n110,61,34,47,116,114,97,110,115,102,111,114,109,97,116,105,111,110,114,101,99,\n111,110,115,116,114,117,99,116,105,111,110,46,115,116,121,108,101,46,100,105,115\n,112,108,97,121,32,65,99,99,111,114,100,105,110,103,32,116,111,32,104,105,100,\n100,101,110,34,32,110,97,109,101,61,34,97,108,111,110,103,32,119,105,116,104,32,\n116,104,101,100,111,99,117,109,101,110,116,46,98,111,100,121,46,97,112,112,114,\n111,120,105,109,97,116,101,108,121,32,67,111,109,109,117,110,105,99,97,116,105,\n111,110,115,112,111,115,116,34,32,97,99,116,105,111,110,61,34,109,101,97,110,105\n,110,103,32,38,113,117,111,116,59,45,45,60,33,91,101,110,100,105,102,93,45,45,62\n,80,114,105,109,101,32,77,105,110,105,115,116,101,114,99,104,97,114,97,99,116,\n101,114,105,115,116,105,99,60,47,97,62,32,60,97,32,99,108,97,115,115,61,116,104,\n101,32,104,105,115,116,111,114,121,32,111,102,32,111,110,109,111,117,115,101,111\n,118,101,114,61,34,116,104,101,32,103,111,118,101,114,110,109,101,110,116,104,\n114,101,102,61,34,104,116,116,112,115,58,47,47,119,97,115,32,111,114,105,103,105\n,110,97,108,108,121,119,97,115,32,105,110,116,114,111,100,117,99,101,100,99,108,\n97,115,115,105,102,105,99,97,116,105,111,110,114,101,112,114,101,115,101,110,116\n,97,116,105,118,101,97,114,101,32,99,111,110,115,105,100,101,114,101,100,60,33,\n91,101,110,100,105,102,93,45,45,62,10,10,100,101,112,101,110,100,115,32,111,110,\n32,116,104,101,85,110,105,118,101,114,115,105,116,121,32,111,102,32,105,110,32,\n99,111,110,116,114,97,115,116,32,116,111,32,112,108,97,99,101,104,111,108,100,\n101,114,61,34,105,110,32,116,104,101,32,99,97,115,101,32,111,102,105,110,116,101\n,114,110,97,116,105,111,110,97,108,32,99,111,110,115,116,105,116,117,116,105,111\n,110,97,108,115,116,121,108,101,61,34,98,111,114,100,101,114,45,58,32,102,117,\n110,99,116,105,111,110,40,41,32,123,66,101,99,97,117,115,101,32,111,102,32,116,\n104,101,45,115,116,114,105,99,116,46,100,116,100,34,62,10,60,116,97,98,108,101,\n32,99,108,97,115,115,61,34,97,99,99,111,109,112,97,110,105,101,100,32,98,121,97,\n99,99,111,117,110,116,32,111,102,32,116,104,101,60,115,99,114,105,112,116,32,115\n,114,99,61,34,47,110,97,116,117,114,101,32,111,102,32,116,104,101,32,116,104,101\n,32,112,101,111,112,108,101,32,105,110,32,105,110,32,97,100,100,105,116,105,111,\n110,32,116,111,115,41,59,32,106,115,46,105,100,32,61,32,105,100,34,32,119,105,\n100,116,104,61,34,49,48,48,37,34,114,101,103,97,114,100,105,110,103,32,116,104,\n101,32,82,111,109,97,110,32,67,97,116,104,111,108,105,99,97,110,32,105,110,100,\n101,112,101,110,100,101,110,116,102,111,108,108,111,119,105,110,103,32,116,104,\n101,32,46,103,105,102,34,32,119,105,100,116,104,61,34,49,116,104,101,32,102,111,\n108,108,111,119,105,110,103,32,100,105,115,99,114,105,109,105,110,97,116,105,111\n,110,97,114,99,104,97,101,111,108,111,103,105,99,97,108,112,114,105,109,101,32,\n109,105,110,105,115,116,101,114,46,106,115,34,62,60,47,115,99,114,105,112,116,62\n,99,111,109,98,105,110,97,116,105,111,110,32,111,102,32,109,97,114,103,105,110,\n119,105,100,116,104,61,34,99,114,101,97,116,101,69,108,101,109,101,110,116,40,\n119,46,97,116,116,97,99,104,69,118,101,110,116,40,60,47,97,62,60,47,116,100,62,\n60,47,116,114,62,115,114,99,61,34,104,116,116,112,115,58,47,47,97,73,110,32,112,\n97,114,116,105,99,117,108,97,114,44,32,97,108,105,103,110,61,34,108,101,102,116,\n34,32,67,122,101,99,104,32,82,101,112,117,98,108,105,99,85,110,105,116,101,100,\n32,75,105,110,103,100,111,109,99,111,114,114,101,115,112,111,110,100,101,110,99,\n101,99,111,110,99,108,117,100,101,100,32,116,104,97,116,46,104,116,109,108,34,32\n,116,105,116,108,101,61,34,40,102,117,110,99,116,105,111,110,32,40,41,32,123,99,\n111,109,101,115,32,102,114,111,109,32,116,104,101,97,112,112,108,105,99,97,116,\n105,111,110,32,111,102,60,115,112,97,110,32,99,108,97,115,115,61,34,115,98,101,\n108,105,101,118,101,100,32,116,111,32,98,101,101,109,101,110,116,40,39,115,99,\n114,105,112,116,39,60,47,97,62,10,60,47,108,105,62,10,60,108,105,118,101,114,121\n,32,100,105,102,102,101,114,101,110,116,62,60,115,112,97,110,32,99,108,97,115,\n115,61,34,111,112,116,105,111,110,32,118,97,108,117,101,61,34,40,97,108,115,111,\n32,107,110,111,119,110,32,97,115,9,60,108,105,62,60,97,32,104,114,101,102,61,34,\n62,60,105,110,112,117,116,32,110,97,109,101,61,34,115,101,112,97,114,97,116,101,\n100,32,102,114,111,109,114,101,102,101,114,114,101,100,32,116,111,32,97,115,32,\n118,97,108,105,103,110,61,34,116,111,112,34,62,102,111,117,110,100,101,114,32,\n111,102,32,116,104,101,97,116,116,101,109,112,116,105,110,103,32,116,111,32,99,\n97,114,98,111,110,32,100,105,111,120,105,100,101,10,10,60,100,105,118,32,99,108,\n97,115,115,61,34,99,108,97,115,115,61,34,115,101,97,114,99,104,45,47,98,111,100,\n121,62,10,60,47,104,116,109,108,62,111,112,112,111,114,116,117,110,105,116,121,\n32,116,111,99,111,109,109,117,110,105,99,97,116,105,111,110,115,60,47,104,101,97\n,100,62,13,10,60,98,111,100,121,32,115,116,121,108,101,61,34,119,105,100,116,104\n,58,84,105,225,186,191,110,103,32,86,105,225,187,135,116,99,104,97,110,103,101,\n115,32,105,110,32,116,104,101,98,111,114,100,101,114,45,99,111,108,111,114,58,35\n,48,34,32,98,111,114,100,101,114,61,34,48,34,32,60,47,115,112,97,110,62,60,47,\n100,105,118,62,60,119,97,115,32,100,105,115,99,111,118,101,114,101,100,34,32,116\n,121,112,101,61,34,116,101,120,116,34,32,41,59,10,60,47,115,99,114,105,112,116,\n62,10,10,68,101,112,97,114,116,109,101,110,116,32,111,102,32,101,99,99,108,101,\n115,105,97,115,116,105,99,97,108,116,104,101,114,101,32,104,97,115,32,98,101,101\n,110,114,101,115,117,108,116,105,110,103,32,102,114,111,109,60,47,98,111,100,121\n,62,60,47,104,116,109,108,62,104,97,115,32,110,101,118,101,114,32,98,101,101,110\n,116,104,101,32,102,105,114,115,116,32,116,105,109,101,105,110,32,114,101,115,\n112,111,110,115,101,32,116,111,97,117,116,111,109,97,116,105,99,97,108,108,121,\n32,60,47,100,105,118,62,10,10,60,100,105,118,32,105,119,97,115,32,99,111,110,115\n,105,100,101,114,101,100,112,101,114,99,101,110,116,32,111,102,32,116,104,101,34\n,32,47,62,60,47,97,62,60,47,100,105,118,62,99,111,108,108,101,99,116,105,111,110\n,32,111,102,32,100,101,115,99,101,110,100,101,100,32,102,114,111,109,115,101,99,\n116,105,111,110,32,111,102,32,116,104,101,97,99,99,101,112,116,45,99,104,97,114,\n115,101,116,116,111,32,98,101,32,99,111,110,102,117,115,101,100,109,101,109,98,\n101,114,32,111,102,32,116,104,101,32,112,97,100,100,105,110,103,45,114,105,103,\n104,116,58,116,114,97,110,115,108,97,116,105,111,110,32,111,102,105,110,116,101,\n114,112,114,101,116,97,116,105,111,110,32,104,114,101,102,61,39,104,116,116,112,\n58,47,47,119,104,101,116,104,101,114,32,111,114,32,110,111,116,84,104,101,114,\n101,32,97,114,101,32,97,108,115,111,116,104,101,114,101,32,97,114,101,32,109,97,\n110,121,97,32,115,109,97,108,108,32,110,117,109,98,101,114,111,116,104,101,114,\n32,112,97,114,116,115,32,111,102,105,109,112,111,115,115,105,98,108,101,32,116,\n111,32,32,99,108,97,115,115,61,34,98,117,116,116,111,110,108,111,99,97,116,101,\n100,32,105,110,32,116,104,101,46,32,72,111,119,101,118,101,114,44,32,116,104,101\n,97,110,100,32,101,118,101,110,116,117,97,108,108,121,65,116,32,116,104,101,32,\n101,110,100,32,111,102,32,98,101,99,97,117,115,101,32,111,102,32,105,116,115,114\n,101,112,114,101,115,101,110,116,115,32,116,104,101,60,102,111,114,109,32,97,99,\n116,105,111,110,61,34,32,109,101,116,104,111,100,61,34,112,111,115,116,34,105,\n116,32,105,115,32,112,111,115,115,105,98,108,101,109,111,114,101,32,108,105,107,\n101,108,121,32,116,111,97,110,32,105,110,99,114,101,97,115,101,32,105,110,104,97\n,118,101,32,97,108,115,111,32,98,101,101,110,99,111,114,114,101,115,112,111,110,\n100,115,32,116,111,97,110,110,111,117,110,99,101,100,32,116,104,97,116,97,108,\n105,103,110,61,34,114,105,103,104,116,34,62,109,97,110,121,32,99,111,117,110,116\n,114,105,101,115,102,111,114,32,109,97,110,121,32,121,101,97,114,115,101,97,114,\n108,105,101,115,116,32,107,110,111,119,110,98,101,99,97,117,115,101,32,105,116,\n32,119,97,115,112,116,34,62,60,47,115,99,114,105,112,116,62,13,32,118,97,108,105\n,103,110,61,34,116,111,112,34,32,105,110,104,97,98,105,116,97,110,116,115,32,111\n,102,102,111,108,108,111,119,105,110,103,32,121,101,97,114,13,10,60,100,105,118,\n32,99,108,97,115,115,61,34,109,105,108,108,105,111,110,32,112,101,111,112,108,\n101,99,111,110,116,114,111,118,101,114,115,105,97,108,32,99,111,110,99,101,114,\n110,105,110,103,32,116,104,101,97,114,103,117,101,32,116,104,97,116,32,116,104,\n101,103,111,118,101,114,110,109,101,110,116,32,97,110,100,97,32,114,101,102,101,\n114,101,110,99,101,32,116,111,116,114,97,110,115,102,101,114,114,101,100,32,116,\n111,100,101,115,99,114,105,98,105,110,103,32,116,104,101,32,115,116,121,108,101,\n61,34,99,111,108,111,114,58,97,108,116,104,111,117,103,104,32,116,104,101,114,\n101,98,101,115,116,32,107,110,111,119,110,32,102,111,114,115,117,98,109,105,116,\n34,32,110,97,109,101,61,34,109,117,108,116,105,112,108,105,99,97,116,105,111,110\n,109,111,114,101,32,116,104,97,110,32,111,110,101,32,114,101,99,111,103,110,105,\n116,105,111,110,32,111,102,67,111,117,110,99,105,108,32,111,102,32,116,104,101,\n101,100,105,116,105,111,110,32,111,102,32,116,104,101,32,32,60,109,101,116,97,32\n,110,97,109,101,61,34,69,110,116,101,114,116,97,105,110,109,101,110,116,32,97,\n119,97,121,32,102,114,111,109,32,116,104,101,32,59,109,97,114,103,105,110,45,114\n,105,103,104,116,58,97,116,32,116,104,101,32,116,105,109,101,32,111,102,105,110,\n118,101,115,116,105,103,97,116,105,111,110,115,99,111,110,110,101,99,116,101,100\n,32,119,105,116,104,97,110,100,32,109,97,110,121,32,111,116,104,101,114,97,108,\n116,104,111,117,103,104,32,105,116,32,105,115,98,101,103,105,110,110,105,110,103\n,32,119,105,116,104,32,60,115,112,97,110,32,99,108,97,115,115,61,34,100,101,115,\n99,101,110,100,97,110,116,115,32,111,102,60,115,112,97,110,32,99,108,97,115,115,\n61,34,105,32,97,108,105,103,110,61,34,114,105,103,104,116,34,60,47,104,101,97,\n100,62,10,60,98,111,100,121,32,97,115,112,101,99,116,115,32,111,102,32,116,104,\n101,104,97,115,32,115,105,110,99,101,32,98,101,101,110,69,117,114,111,112,101,97\n,110,32,85,110,105,111,110,114,101,109,105,110,105,115,99,101,110,116,32,111,102\n,109,111,114,101,32,100,105,102,102,105,99,117,108,116,86,105,99,101,32,80,114,\n101,115,105,100,101,110,116,99,111,109,112,111,115,105,116,105,111,110,32,111,\n102,112,97,115,115,101,100,32,116,104,114,111,117,103,104,109,111,114,101,32,105\n,109,112,111,114,116,97,110,116,102,111,110,116,45,115,105,122,101,58,49,49,112,\n120,101,120,112,108,97,110,97,116,105,111,110,32,111,102,116,104,101,32,99,111,\n110,99,101,112,116,32,111,102,119,114,105,116,116,101,110,32,105,110,32,116,104,\n101,9,60,115,112,97,110,32,99,108,97,115,115,61,34,105,115,32,111,110,101,32,111\n,102,32,116,104,101,32,114,101,115,101,109,98,108,97,110,99,101,32,116,111,111,\n110,32,116,104,101,32,103,114,111,117,110,100,115,119,104,105,99,104,32,99,111,\n110,116,97,105,110,115,105,110,99,108,117,100,105,110,103,32,116,104,101,32,100,\n101,102,105,110,101,100,32,98,121,32,116,104,101,112,117,98,108,105,99,97,116,\n105,111,110,32,111,102,109,101,97,110,115,32,116,104,97,116,32,116,104,101,111,\n117,116,115,105,100,101,32,111,102,32,116,104,101,115,117,112,112,111,114,116,32\n,111,102,32,116,104,101,60,105,110,112,117,116,32,99,108,97,115,115,61,34,60,115\n,112,97,110,32,99,108,97,115,115,61,34,116,40,77,97,116,104,46,114,97,110,100,\n111,109,40,41,109,111,115,116,32,112,114,111,109,105,110,101,110,116,100,101,115\n,99,114,105,112,116,105,111,110,32,111,102,67,111,110,115,116,97,110,116,105,110\n,111,112,108,101,119,101,114,101,32,112,117,98,108,105,115,104,101,100,60,100,\n105,118,32,99,108,97,115,115,61,34,115,101,97,112,112,101,97,114,115,32,105,110,\n32,116,104,101,49,34,32,104,101,105,103,104,116,61,34,49,34,32,109,111,115,116,\n32,105,109,112,111,114,116,97,110,116,119,104,105,99,104,32,105,110,99,108,117,\n100,101,115,119,104,105,99,104,32,104,97,100,32,98,101,101,110,100,101,115,116,\n114,117,99,116,105,111,110,32,111,102,116,104,101,32,112,111,112,117,108,97,116,\n105,111,110,10,9,60,100,105,118,32,99,108,97,115,115,61,34,112,111,115,115,105,\n98,105,108,105,116,121,32,111,102,115,111,109,101,116,105,109,101,115,32,117,115\n,101,100,97,112,112,101,97,114,32,116,111,32,104,97,118,101,115,117,99,99,101,\n115,115,32,111,102,32,116,104,101,105,110,116,101,110,100,101,100,32,116,111,32,\n98,101,112,114,101,115,101,110,116,32,105,110,32,116,104,101,115,116,121,108,101\n,61,34,99,108,101,97,114,58,98,13,10,60,47,115,99,114,105,112,116,62,13,10,60,\n119,97,115,32,102,111,117,110,100,101,100,32,105,110,105,110,116,101,114,118,105\n,101,119,32,119,105,116,104,95,105,100,34,32,99,111,110,116,101,110,116,61,34,99\n,97,112,105,116,97,108,32,111,102,32,116,104,101,13,10,60,108,105,110,107,32,114\n,101,108,61,34,115,114,101,108,101,97,115,101,32,111,102,32,116,104,101,112,111,\n105,110,116,32,111,117,116,32,116,104,97,116,120,77,76,72,116,116,112,82,101,113\n,117,101,115,116,97,110,100,32,115,117,98,115,101,113,117,101,110,116,115,101,99\n,111,110,100,32,108,97,114,103,101,115,116,118,101,114,121,32,105,109,112,111,\n114,116,97,110,116,115,112,101,99,105,102,105,99,97,116,105,111,110,115,115,117,\n114,102,97,99,101,32,111,102,32,116,104,101,97,112,112,108,105,101,100,32,116,\n111,32,116,104,101,102,111,114,101,105,103,110,32,112,111,108,105,99,121,95,115,\n101,116,68,111,109,97,105,110,78,97,109,101,101,115,116,97,98,108,105,115,104,\n101,100,32,105,110,105,115,32,98,101,108,105,101,118,101,100,32,116,111,73,110,\n32,97,100,100,105,116,105,111,110,32,116,111,109,101,97,110,105,110,103,32,111,\n102,32,116,104,101,105,115,32,110,97,109,101,100,32,97,102,116,101,114,116,111,\n32,112,114,111,116,101,99,116,32,116,104,101,105,115,32,114,101,112,114,101,115,\n101,110,116,101,100,68,101,99,108,97,114,97,116,105,111,110,32,111,102,109,111,\n114,101,32,101,102,102,105,99,105,101,110,116,67,108,97,115,115,105,102,105,99,\n97,116,105,111,110,111,116,104,101,114,32,102,111,114,109,115,32,111,102,104,101\n,32,114,101,116,117,114,110,101,100,32,116,111,60,115,112,97,110,32,99,108,97,\n115,115,61,34,99,112,101,114,102,111,114,109,97,110,99,101,32,111,102,40,102,117\n,110,99,116,105,111,110,40,41,32,123,13,105,102,32,97,110,100,32,111,110,108,121\n,32,105,102,114,101,103,105,111,110,115,32,111,102,32,116,104,101,108,101,97,100\n,105,110,103,32,116,111,32,116,104,101,114,101,108,97,116,105,111,110,115,32,119\n,105,116,104,85,110,105,116,101,100,32,78,97,116,105,111,110,115,115,116,121,108\n,101,61,34,104,101,105,103,104,116,58,111,116,104,101,114,32,116,104,97,110,32,\n116,104,101,121,112,101,34,32,99,111,110,116,101,110,116,61,34,65,115,115,111,99\n,105,97,116,105,111,110,32,111,102,10,60,47,104,101,97,100,62,10,60,98,111,100,\n121,108,111,99,97,116,101,100,32,111,110,32,116,104,101,105,115,32,114,101,102,\n101,114,114,101,100,32,116,111,40,105,110,99,108,117,100,105,110,103,32,116,104,\n101,99,111,110,99,101,110,116,114,97,116,105,111,110,115,116,104,101,32,105,110,\n100,105,118,105,100,117,97,108,97,109,111,110,103,32,116,104,101,32,109,111,115,\n116,116,104,97,110,32,97,110,121,32,111,116,104,101,114,47,62,10,60,108,105,110,\n107,32,114,101,108,61,34,32,114,101,116,117,114,110,32,102,97,108,115,101,59,116\n,104,101,32,112,117,114,112,111,115,101,32,111,102,116,104,101,32,97,98,105,108,\n105,116,121,32,116,111,59,99,111,108,111,114,58,35,102,102,102,125,10,46,10,60,\n115,112,97,110,32,99,108,97,115,115,61,34,116,104,101,32,115,117,98,106,101,99,\n116,32,111,102,100,101,102,105,110,105,116,105,111,110,115,32,111,102,62,13,10,\n60,108,105,110,107,32,114,101,108,61,34,99,108,97,105,109,32,116,104,97,116,32,\n116,104,101,104,97,118,101,32,100,101,118,101,108,111,112,101,100,60,116,97,98,\n108,101,32,119,105,100,116,104,61,34,99,101,108,101,98,114,97,116,105,111,110,32\n,111,102,70,111,108,108,111,119,105,110,103,32,116,104,101,32,116,111,32,100,105\n,115,116,105,110,103,117,105,115,104,60,115,112,97,110,32,99,108,97,115,115,61,\n34,98,116,97,107,101,115,32,112,108,97,99,101,32,105,110,117,110,100,101,114,32,\n116,104,101,32,110,97,109,101,110,111,116,101,100,32,116,104,97,116,32,116,104,\n101,62,60,33,91,101,110,100,105,102,93,45,45,62,10,115,116,121,108,101,61,34,109\n,97,114,103,105,110,45,105,110,115,116,101,97,100,32,111,102,32,116,104,101,105,\n110,116,114,111,100,117,99,101,100,32,116,104,101,116,104,101,32,112,114,111,99,\n101,115,115,32,111,102,105,110,99,114,101,97,115,105,110,103,32,116,104,101,100,\n105,102,102,101,114,101,110,99,101,115,32,105,110,101,115,116,105,109,97,116,101\n,100,32,116,104,97,116,101,115,112,101,99,105,97,108,108,121,32,116,104,101,47,\n100,105,118,62,60,100,105,118,32,105,100,61,34,119,97,115,32,101,118,101,110,116\n,117,97,108,108,121,116,104,114,111,117,103,104,111,117,116,32,104,105,115,116,\n104,101,32,100,105,102,102,101,114,101,110,99,101,115,111,109,101,116,104,105,\n110,103,32,116,104,97,116,115,112,97,110,62,60,47,115,112,97,110,62,60,47,115,\n105,103,110,105,102,105,99,97,110,116,108,121,32,62,60,47,115,99,114,105,112,116\n,62,13,10,13,10,101,110,118,105,114,111,110,109,101,110,116,97,108,32,116,111,32\n,112,114,101,118,101,110,116,32,116,104,101,104,97,118,101,32,98,101,101,110,32,\n117,115,101,100,101,115,112,101,99,105,97,108,108,121,32,102,111,114,117,110,100\n,101,114,115,116,97,110,100,32,116,104,101,105,115,32,101,115,115,101,110,116,\n105,97,108,108,121,119,101,114,101,32,116,104,101,32,102,105,114,115,116,105,115\n,32,116,104,101,32,108,97,114,103,101,115,116,104,97,118,101,32,98,101,101,110,\n32,109,97,100,101,34,32,115,114,99,61,34,104,116,116,112,58,47,47,105,110,116,\n101,114,112,114,101,116,101,100,32,97,115,115,101,99,111,110,100,32,104,97,108,\n102,32,111,102,99,114,111,108,108,105,110,103,61,34,110,111,34,32,105,115,32,99,\n111,109,112,111,115,101,100,32,111,102,73,73,44,32,72,111,108,121,32,82,111,109,\n97,110,105,115,32,101,120,112,101,99,116,101,100,32,116,111,104,97,118,101,32,\n116,104,101,105,114,32,111,119,110,100,101,102,105,110,101,100,32,97,115,32,116,\n104,101,116,114,97,100,105,116,105,111,110,97,108,108,121,32,104,97,118,101,32,\n100,105,102,102,101,114,101,110,116,97,114,101,32,111,102,116,101,110,32,117,115\n,101,100,116,111,32,101,110,115,117,114,101,32,116,104,97,116,97,103,114,101,101\n,109,101,110,116,32,119,105,116,104,99,111,110,116,97,105,110,105,110,103,32,116\n,104,101,97,114,101,32,102,114,101,113,117,101,110,116,108,121,105,110,102,111,\n114,109,97,116,105,111,110,32,111,110,101,120,97,109,112,108,101,32,105,115,32,\n116,104,101,114,101,115,117,108,116,105,110,103,32,105,110,32,97,60,47,97,62,60,\n47,108,105,62,60,47,117,108,62,32,99,108,97,115,115,61,34,102,111,111,116,101,\n114,97,110,100,32,101,115,112,101,99,105,97,108,108,121,116,121,112,101,61,34,98\n,117,116,116,111,110,34,32,60,47,115,112,97,110,62,60,47,115,112,97,110,62,119,\n104,105,99,104,32,105,110,99,108,117,100,101,100,62,10,60,109,101,116,97,32,110,\n97,109,101,61,34,99,111,110,115,105,100,101,114,101,100,32,116,104,101,99,97,114\n,114,105,101,100,32,111,117,116,32,98,121,72,111,119,101,118,101,114,44,32,105,\n116,32,105,115,98,101,99,97,109,101,32,112,97,114,116,32,111,102,105,110,32,114,\n101,108,97,116,105,111,110,32,116,111,112,111,112,117,108,97,114,32,105,110,32,\n116,104,101,116,104,101,32,99,97,112,105,116,97,108,32,111,102,119,97,115,32,111\n,102,102,105,99,105,97,108,108,121,119,104,105,99,104,32,104,97,115,32,98,101,\n101,110,116,104,101,32,72,105,115,116,111,114,121,32,111,102,97,108,116,101,114,\n110,97,116,105,118,101,32,116,111,100,105,102,102,101,114,101,110,116,32,102,114\n,111,109,116,111,32,115,117,112,112,111,114,116,32,116,104,101,115,117,103,103,\n101,115,116,101,100,32,116,104,97,116,105,110,32,116,104,101,32,112,114,111,99,\n101,115,115,32,32,60,100,105,118,32,99,108,97,115,115,61,34,116,104,101,32,102,\n111,117,110,100,97,116,105,111,110,98,101,99,97,117,115,101,32,111,102,32,104,\n105,115,99,111,110,99,101,114,110,101,100,32,119,105,116,104,116,104,101,32,117,\n110,105,118,101,114,115,105,116,121,111,112,112,111,115,101,100,32,116,111,32,\n116,104,101,116,104,101,32,99,111,110,116,101,120,116,32,111,102,60,115,112,97,\n110,32,99,108,97,115,115,61,34,112,116,101,120,116,34,32,110,97,109,101,61,34,\n113,34,9,9,60,100,105,118,32,99,108,97,115,115,61,34,116,104,101,32,115,99,105,\n101,110,116,105,102,105,99,114,101,112,114,101,115,101,110,116,101,100,32,98,121\n,109,97,116,104,101,109,97,116,105,99,105,97,110,115,101,108,101,99,116,101,100,\n32,98,121,32,116,104,101,116,104,97,116,32,104,97,118,101,32,98,101,101,110,62,\n60,100,105,118,32,99,108,97,115,115,61,34,99,100,105,118,32,105,100,61,34,104,\n101,97,100,101,114,105,110,32,112,97,114,116,105,99,117,108,97,114,44,99,111,110\n,118,101,114,116,101,100,32,105,110,116,111,41,59,10,60,47,115,99,114,105,112,\n116,62,10,60,112,104,105,108,111,115,111,112,104,105,99,97,108,32,115,114,112,\n115,107,111,104,114,118,97,116,115,107,105,116,105,225,186,191,110,103,32,86,105\n,225,187,135,116,208,160,209,131,209,129,209,129,208,186,208,184,208,185,209,128\n,209,131,209,129,209,129,208,186,208,184,208,185,105,110,118,101,115,116,105,103\n,97,99,105,195,179,110,112,97,114,116,105,99,105,112,97,99,105,195,179,110,208,\n186,208,190,209,130,208,190,209,128,209,139,208,181,208,190,208,177,208,187,208,\n176,209,129,209,130,208,184,208,186,208,190,209,130,208,190,209,128,209,139,208,\n185,209,135,208,181,208,187,208,190,208,178,208,181,208,186,209,129,208,184,209,\n129,209,130,208,181,208,188,209,139,208,157,208,190,208,178,208,190,209,129,209,\n130,208,184,208,186,208,190,209,130,208,190,209,128,209,139,209,133,208,190,208,\n177,208,187,208,176,209,129,209,130,209,140,208,178,209,128,208,181,208,188,208,\n181,208,189,208,184,208,186,208,190,209,130,208,190,209,128,208,176,209,143,209,\n129,208,181,208,179,208,190,208,180,208,189,209,143,209,129,208,186,208,176,209,\n135,208,176,209,130,209,140,208,189,208,190,208,178,208,190,209,129,209,130,208,\n184,208,163,208,186,209,128,208,176,208,184,208,189,209,139,208,178,208,190,208,\n191,209,128,208,190,209,129,209,139,208,186,208,190,209,130,208,190,209,128,208,\n190,208,185,209,129,208,180,208,181,208,187,208,176,209,130,209,140,208,191,208,\n190,208,188,208,190,209,137,209,140,209,142,209,129,209,128,208,181,208,180,209,\n129,209,130,208,178,208,190,208,177,209,128,208,176,208,183,208,190,208,188,209,\n129,209,130,208,190,209,128,208,190,208,189,209,139,209,131,209,135,208,176,209,\n129,209,130,208,184,208,181,209,130,208,181,209,135,208,181,208,189,208,184,208,\n181,208,147,208,187,208,176,208,178,208,189,208,176,209,143,208,184,209,129,209,\n130,208,190,209,128,208,184,208,184,209,129,208,184,209,129,209,130,208,181,208,\n188,208,176,209,128,208,181,209,136,208,181,208,189,208,184,209,143,208,161,208,\n186,208,176,209,135,208,176,209,130,209,140,208,191,208,190,209,141,209,130,208,\n190,208,188,209,131,209,129,208,187,208,181,208,180,209,131,208,181,209,130,209,\n129,208,186,208,176,208,183,208,176,209,130,209,140,209,130,208,190,208,178,208,\n176,209,128,208,190,208,178,208,186,208,190,208,189,208,181,209,135,208,189,208,\n190,209,128,208,181,209,136,208,181,208,189,208,184,208,181,208,186,208,190,209,\n130,208,190,209,128,208,190,208,181,208,190,209,128,208,179,208,176,208,189,208,\n190,208,178,208,186,208,190,209,130,208,190,209,128,208,190,208,188,208,160,208,\n181,208,186,208,187,208,176,208,188,208,176,216,167,217,132,217,133,217,134,216,\n170,216,175,217,137,217,133,217,134,216,170,216,175,217,138,216,167,216,170,216,\n167,217,132,217,133,217,136,216,182,217,136,216,185,216,167,217,132,216,168,216,\n177,216,167,217,133,216,172,216,167,217,132,217,133,217,136,216,167,217,130,216,\n185,216,167,217,132,216,177,216,179,216,167,216,166,217,132,217,133,216,180,216,\n167,216,177,217,131,216,167,216,170,216,167,217,132,216,163,216,185,216,182,216,\n167,216,161,216,167,217,132,216,177,217,138,216,167,216,182,216,169,216,167,217,\n132,216,170,216,181,217,133,217,138,217,133,216,167,217,132,216,167,216,185,216,\n182,216,167,216,161,216,167,217,132,217,134,216,170,216,167,216,166,216,172,216,\n167,217,132,216,163,217,132,216,185,216,167,216,168,216,167,217,132,216,170,216,\n179,216,172,217,138,217,132,216,167,217,132,216,163,217,130,216,179,216,167,217,\n133,216,167,217,132,216,182,216,186,216,183,216,167,216,170,216,167,217,132,217,\n129,217,138,216,175,217,138,217,136,216,167,217,132,216,170,216,177,216,173,217,\n138,216,168,216,167,217,132,216,172,216,175,217,138,216,175,216,169,216,167,217,\n132,216,170,216,185,217,132,217,138,217,133,216,167,217,132,216,163,216,174,216,\n168,216,167,216,177,216,167,217,132,216,167,217,129,217,132,216,167,217,133,216,\n167,217,132,216,163,217,129,217,132,216,167,217,133,216,167,217,132,216,170,216,\n167,216,177,217,138,216,174,216,167,217,132,216,170,217,130,217,134,217,138,216,\n169,216,167,217,132,216,167,217,132,216,185,216,167,216,168,216,167,217,132,216,\n174,217,136,216,167,216,183,216,177,216,167,217,132,217,133,216,172,216,170,217,\n133,216,185,216,167,217,132,216,175,217,138,217,131,217,136,216,177,216,167,217,\n132,216,179,217,138,216,167,216,173,216,169,216,185,216,168,216,175,216,167,217,\n132,217,132,217,135,216,167,217,132,216,170,216,177,216,168,217,138,216,169,216,\n167,217,132,216,177,217,136,216,167,216,168,216,183,216,167,217,132,216,163,216,\n175,216,168,217,138,216,169,216,167,217,132,216,167,216,174,216,168,216,167,216,\n177,216,167,217,132,217,133,216,170,216,173,216,175,216,169,216,167,217,132,216,\n167,216,186,216,167,217,134,217,138,99,117,114,115,111,114,58,112,111,105,110,\n116,101,114,59,60,47,116,105,116,108,101,62,10,60,109,101,116,97,32,34,32,104,\n114,101,102,61,34,104,116,116,112,58,47,47,34,62,60,115,112,97,110,32,99,108,97,\n115,115,61,34,109,101,109,98,101,114,115,32,111,102,32,116,104,101,32,119,105,\n110,100,111,119,46,108,111,99,97,116,105,111,110,118,101,114,116,105,99,97,108,\n45,97,108,105,103,110,58,47,97,62,32,124,32,60,97,32,104,114,101,102,61,34,60,33\n,100,111,99,116,121,112,101,32,104,116,109,108,62,109,101,100,105,97,61,34,115,\n99,114,101,101,110,34,32,60,111,112,116,105,111,110,32,118,97,108,117,101,61,34,\n102,97,118,105,99,111,110,46,105,99,111,34,32,47,62,10,9,9,60,100,105,118,32,99,\n108,97,115,115,61,34,99,104,97,114,97,99,116,101,114,105,115,116,105,99,115,34,\n32,109,101,116,104,111,100,61,34,103,101,116,34,32,47,98,111,100,121,62,10,60,47\n,104,116,109,108,62,10,115,104,111,114,116,99,117,116,32,105,99,111,110,34,32,\n100,111,99,117,109,101,110,116,46,119,114,105,116,101,40,112,97,100,100,105,110,\n103,45,98,111,116,116,111,109,58,114,101,112,114,101,115,101,110,116,97,116,105,\n118,101,115,115,117,98,109,105,116,34,32,118,97,108,117,101,61,34,97,108,105,103\n,110,61,34,99,101,110,116,101,114,34,32,116,104,114,111,117,103,104,111,117,116,\n32,116,104,101,32,115,99,105,101,110,99,101,32,102,105,99,116,105,111,110,10,32,\n32,60,100,105,118,32,99,108,97,115,115,61,34,115,117,98,109,105,116,34,32,99,108\n,97,115,115,61,34,111,110,101,32,111,102,32,116,104,101,32,109,111,115,116,32,\n118,97,108,105,103,110,61,34,116,111,112,34,62,60,119,97,115,32,101,115,116,97,\n98,108,105,115,104,101,100,41,59,13,10,60,47,115,99,114,105,112,116,62,13,10,114\n,101,116,117,114,110,32,102,97,108,115,101,59,34,62,41,46,115,116,121,108,101,46\n,100,105,115,112,108,97,121,98,101,99,97,117,115,101,32,111,102,32,116,104,101,\n32,100,111,99,117,109,101,110,116,46,99,111,111,107,105,101,60,102,111,114,109,\n32,97,99,116,105,111,110,61,34,47,125,98,111,100,121,123,109,97,114,103,105,110,\n58,48,59,69,110,99,121,99,108,111,112,101,100,105,97,32,111,102,118,101,114,115,\n105,111,110,32,111,102,32,116,104,101,32,46,99,114,101,97,116,101,69,108,101,109\n,101,110,116,40,110,97,109,101,34,32,99,111,110,116,101,110,116,61,34,60,47,100,\n105,118,62,10,60,47,100,105,118,62,10,10,97,100,109,105,110,105,115,116,114,97,\n116,105,118,101,32,60,47,98,111,100,121,62,10,60,47,104,116,109,108,62,104,105,\n115,116,111,114,121,32,111,102,32,116,104,101,32,34,62,60,105,110,112,117,116,32\n,116,121,112,101,61,34,112,111,114,116,105,111,110,32,111,102,32,116,104,101,32,\n97,115,32,112,97,114,116,32,111,102,32,116,104,101,32,38,110,98,115,112,59,60,97\n,32,104,114,101,102,61,34,111,116,104,101,114,32,99,111,117,110,116,114,105,101,\n115,34,62,10,60,100,105,118,32,99,108,97,115,115,61,34,60,47,115,112,97,110,62,\n60,47,115,112,97,110,62,60,73,110,32,111,116,104,101,114,32,119,111,114,100,115,\n44,100,105,115,112,108,97,121,58,32,98,108,111,99,107,59,99,111,110,116,114,111,\n108,32,111,102,32,116,104,101,32,105,110,116,114,111,100,117,99,116,105,111,110,\n32,111,102,47,62,10,60,109,101,116,97,32,110,97,109,101,61,34,97,115,32,119,101,\n108,108,32,97,115,32,116,104,101,32,105,110,32,114,101,99,101,110,116,32,121,101\n,97,114,115,13,10,9,60,100,105,118,32,99,108,97,115,115,61,34,60,47,100,105,118,\n62,10,9,60,47,100,105,118,62,10,105,110,115,112,105,114,101,100,32,98,121,32,116\n,104,101,116,104,101,32,101,110,100,32,111,102,32,116,104,101,32,99,111,109,112,\n97,116,105,98,108,101,32,119,105,116,104,98,101,99,97,109,101,32,107,110,111,119\n,110,32,97,115,32,115,116,121,108,101,61,34,109,97,114,103,105,110,58,46,106,115\n,34,62,60,47,115,99,114,105,112,116,62,60,32,73,110,116,101,114,110,97,116,105,\n111,110,97,108,32,116,104,101,114,101,32,104,97,118,101,32,98,101,101,110,71,101\n,114,109,97,110,32,108,97,110,103,117,97,103,101,32,115,116,121,108,101,61,34,99\n,111,108,111,114,58,35,67,111,109,109,117,110,105,115,116,32,80,97,114,116,121,\n99,111,110,115,105,115,116,101,110,116,32,119,105,116,104,98,111,114,100,101,114\n,61,34,48,34,32,99,101,108,108,32,109,97,114,103,105,110,104,101,105,103,104,116\n,61,34,116,104,101,32,109,97,106,111,114,105,116,121,32,111,102,34,32,97,108,105\n,103,110,61,34,99,101,110,116,101,114,114,101,108,97,116,101,100,32,116,111,32,\n116,104,101,32,109,97,110,121,32,100,105,102,102,101,114,101,110,116,32,79,114,\n116,104,111,100,111,120,32,67,104,117,114,99,104,115,105,109,105,108,97,114,32,\n116,111,32,116,104,101,32,47,62,10,60,108,105,110,107,32,114,101,108,61,34,115,\n119,97,115,32,111,110,101,32,111,102,32,116,104,101,32,117,110,116,105,108,32,\n104,105,115,32,100,101,97,116,104,125,41,40,41,59,10,60,47,115,99,114,105,112,\n116,62,111,116,104,101,114,32,108,97,110,103,117,97,103,101,115,99,111,109,112,\n97,114,101,100,32,116,111,32,116,104,101,112,111,114,116,105,111,110,115,32,111,\n102,32,116,104,101,116,104,101,32,78,101,116,104,101,114,108,97,110,100,115,116,\n104,101,32,109,111,115,116,32,99,111,109,109,111,110,98,97,99,107,103,114,111,\n117,110,100,58,117,114,108,40,97,114,103,117,101,100,32,116,104,97,116,32,116,\n104,101,115,99,114,111,108,108,105,110,103,61,34,110,111,34,32,105,110,99,108,\n117,100,101,100,32,105,110,32,116,104,101,78,111,114,116,104,32,65,109,101,114,\n105,99,97,110,32,116,104,101,32,110,97,109,101,32,111,102,32,116,104,101,105,110\n,116,101,114,112,114,101,116,97,116,105,111,110,115,116,104,101,32,116,114,97,\n100,105,116,105,111,110,97,108,100,101,118,101,108,111,112,109,101,110,116,32,\n111,102,32,102,114,101,113,117,101,110,116,108,121,32,117,115,101,100,97,32,99,\n111,108,108,101,99,116,105,111,110,32,111,102,118,101,114,121,32,115,105,109,105\n,108,97,114,32,116,111,115,117,114,114,111,117,110,100,105,110,103,32,116,104,\n101,101,120,97,109,112,108,101,32,111,102,32,116,104,105,115,97,108,105,103,110,\n61,34,99,101,110,116,101,114,34,62,119,111,117,108,100,32,104,97,118,101,32,98,\n101,101,110,105,109,97,103,101,95,99,97,112,116,105,111,110,32,61,97,116,116,97,\n99,104,101,100,32,116,111,32,116,104,101,115,117,103,103,101,115,116,105,110,103\n,32,116,104,97,116,105,110,32,116,104,101,32,102,111,114,109,32,111,102,32,105,\n110,118,111,108,118,101,100,32,105,110,32,116,104,101,105,115,32,100,101,114,105\n,118,101,100,32,102,114,111,109,110,97,109,101,100,32,97,102,116,101,114,32,116,\n104,101,73,110,116,114,111,100,117,99,116,105,111,110,32,116,111,114,101,115,116\n,114,105,99,116,105,111,110,115,32,111,110,32,115,116,121,108,101,61,34,119,105,\n100,116,104,58,32,99,97,110,32,98,101,32,117,115,101,100,32,116,111,32,116,104,\n101,32,99,114,101,97,116,105,111,110,32,111,102,109,111,115,116,32,105,109,112,\n111,114,116,97,110,116,32,105,110,102,111,114,109,97,116,105,111,110,32,97,110,\n100,114,101,115,117,108,116,101,100,32,105,110,32,116,104,101,99,111,108,108,97,\n112,115,101,32,111,102,32,116,104,101,84,104,105,115,32,109,101,97,110,115,32,\n116,104,97,116,101,108,101,109,101,110,116,115,32,111,102,32,116,104,101,119,97,\n115,32,114,101,112,108,97,99,101,100,32,98,121,97,110,97,108,121,115,105,115,32,\n111,102,32,116,104,101,105,110,115,112,105,114,97,116,105,111,110,32,102,111,114\n,114,101,103,97,114,100,101,100,32,97,115,32,116,104,101,109,111,115,116,32,115,\n117,99,99,101,115,115,102,117,108,107,110,111,119,110,32,97,115,32,38,113,117,\n111,116,59,97,32,99,111,109,112,114,101,104,101,110,115,105,118,101,72,105,115,\n116,111,114,121,32,111,102,32,116,104,101,32,119,101,114,101,32,99,111,110,115,\n105,100,101,114,101,100,114,101,116,117,114,110,101,100,32,116,111,32,116,104,\n101,97,114,101,32,114,101,102,101,114,114,101,100,32,116,111,85,110,115,111,117,\n114,99,101,100,32,105,109,97,103,101,62,10,9,60,100,105,118,32,99,108,97,115,115\n,61,34,99,111,110,115,105,115,116,115,32,111,102,32,116,104,101,115,116,111,112,\n80,114,111,112,97,103,97,116,105,111,110,105,110,116,101,114,101,115,116,32,105,\n110,32,116,104,101,97,118,97,105,108,97,98,105,108,105,116,121,32,111,102,97,112\n,112,101,97,114,115,32,116,111,32,104,97,118,101,101,108,101,99,116,114,111,109,\n97,103,110,101,116,105,99,101,110,97,98,108,101,83,101,114,118,105,99,101,115,40\n,102,117,110,99,116,105,111,110,32,111,102,32,116,104,101,73,116,32,105,115,32,\n105,109,112,111,114,116,97,110,116,60,47,115,99,114,105,112,116,62,60,47,100,105\n,118,62,102,117,110,99,116,105,111,110,40,41,123,118,97,114,32,114,101,108,97,\n116,105,118,101,32,116,111,32,116,104,101,97,115,32,97,32,114,101,115,117,108,\n116,32,111,102,32,116,104,101,32,112,111,115,105,116,105,111,110,32,111,102,70,\n111,114,32,101,120,97,109,112,108,101,44,32,105,110,32,109,101,116,104,111,100,\n61,34,112,111,115,116,34,32,119,97,115,32,102,111,108,108,111,119,101,100,32,98,\n121,38,97,109,112,59,109,100,97,115,104,59,32,116,104,101,116,104,101,32,97,112,\n112,108,105,99,97,116,105,111,110,106,115,34,62,60,47,115,99,114,105,112,116,62,\n13,10,117,108,62,60,47,100,105,118,62,60,47,100,105,118,62,97,102,116,101,114,32\n,116,104,101,32,100,101,97,116,104,119,105,116,104,32,114,101,115,112,101,99,116\n,32,116,111,115,116,121,108,101,61,34,112,97,100,100,105,110,103,58,105,115,32,\n112,97,114,116,105,99,117,108,97,114,108,121,100,105,115,112,108,97,121,58,105,\n110,108,105,110,101,59,32,116,121,112,101,61,34,115,117,98,109,105,116,34,32,105\n,115,32,100,105,118,105,100,101,100,32,105,110,116,111,228,184,173,230,150,135,\n32,40,231,174,128,228,189,147,41,114,101,115,112,111,110,115,97,98,105,108,105,\n100,97,100,97,100,109,105,110,105,115,116,114,97,99,105,195,179,110,105,110,116,\n101,114,110,97,99,105,111,110,97,108,101,115,99,111,114,114,101,115,112,111,110,\n100,105,101,110,116,101,224,164,137,224,164,170,224,164,175,224,165,139,224,164,\n151,224,164,170,224,165,130,224,164,176,224,165,141,224,164,181,224,164,185,224,\n164,174,224,164,190,224,164,176,224,165,135,224,164,178,224,165,139,224,164,151,\n224,165,139,224,164,130,224,164,154,224,165,129,224,164,168,224,164,190,224,164,\n181,224,164,178,224,165,135,224,164,149,224,164,191,224,164,168,224,164,184,224,\n164,176,224,164,149,224,164,190,224,164,176,224,164,170,224,165,129,224,164,178,\n224,164,191,224,164,184,224,164,150,224,165,139,224,164,156,224,165,135,224,164,\n130,224,164,154,224,164,190,224,164,185,224,164,191,224,164,143,224,164,173,224,\n165,135,224,164,156,224,165,135,224,164,130,224,164,182,224,164,190,224,164,174,\n224,164,191,224,164,178,224,164,185,224,164,174,224,164,190,224,164,176,224,165,\n128,224,164,156,224,164,190,224,164,151,224,164,176,224,164,163,224,164,172,224,\n164,168,224,164,190,224,164,168,224,165,135,224,164,149,224,165,129,224,164,174,\n224,164,190,224,164,176,224,164,172,224,165,141,224,164,178,224,165,137,224,164,\n151,224,164,174,224,164,190,224,164,178,224,164,191,224,164,149,224,164,174,224,\n164,185,224,164,191,224,164,178,224,164,190,224,164,170,224,165,131,224,164,183,\n224,165,141,224,164,160,224,164,172,224,164,162,224,164,188,224,164,164,224,165,\n135,224,164,173,224,164,190,224,164,156,224,164,170,224,164,190,224,164,149,224,\n165,141,224,164,178,224,164,191,224,164,149,224,164,159,224,165,141,224,164,176,\n224,165,135,224,164,168,224,164,150,224,164,191,224,164,178,224,164,190,224,164,\n171,224,164,166,224,165,140,224,164,176,224,164,190,224,164,168,224,164,174,224,\n164,190,224,164,174,224,164,178,224,165,135,224,164,174,224,164,164,224,164,166,\n224,164,190,224,164,168,224,164,172,224,164,190,224,164,156,224,164,190,224,164,\n176,224,164,181,224,164,191,224,164,149,224,164,190,224,164,184,224,164,149,224,\n165,141,224,164,175,224,165,139,224,164,130,224,164,154,224,164,190,224,164,185,\n224,164,164,224,165,135,224,164,170,224,164,185,224,165,129,224,164,129,224,164,\n154,224,164,172,224,164,164,224,164,190,224,164,175,224,164,190,224,164,184,224,\n164,130,224,164,181,224,164,190,224,164,166,224,164,166,224,165,135,224,164,150,\n224,164,168,224,165,135,224,164,170,224,164,191,224,164,155,224,164,178,224,165,\n135,224,164,181,224,164,191,224,164,182,224,165,135,224,164,183,224,164,176,224,\n164,190,224,164,156,224,165,141,224,164,175,224,164,137,224,164,164,224,165,141,\n224,164,164,224,164,176,224,164,174,224,165,129,224,164,130,224,164,172,224,164,\n136,224,164,166,224,165,139,224,164,168,224,165,139,224,164,130,224,164,137,224,\n164,170,224,164,149,224,164,176,224,164,163,224,164,170,224,164,162,224,164,188,\n224,165,135,224,164,130,224,164,184,224,165,141,224,164,165,224,164,191,224,164,\n164,224,164,171,224,164,191,224,164,178,224,165,141,224,164,174,224,164,174,224,\n165,129,224,164,150,224,165,141,224,164,175,224,164,133,224,164,154,224,165,141,\n224,164,155,224,164,190,224,164,155,224,165,130,224,164,159,224,164,164,224,165,\n128,224,164,184,224,164,130,224,164,151,224,165,128,224,164,164,224,164,156,224,\n164,190,224,164,143,224,164,151,224,164,190,224,164,181,224,164,191,224,164,173,\n224,164,190,224,164,151,224,164,152,224,164,163,224,165,141,224,164,159,224,165,\n135,224,164,166,224,165,130,224,164,184,224,164,176,224,165,135,224,164,166,224,\n164,191,224,164,168,224,165,139,224,164,130,224,164,185,224,164,164,224,165,141,\n224,164,175,224,164,190,224,164,184,224,165,135,224,164,149,224,165,141,224,164,\n184,224,164,151,224,164,190,224,164,130,224,164,167,224,165,128,224,164,181,224,\n164,191,224,164,182,224,165,141,224,164,181,224,164,176,224,164,190,224,164,164,\n224,165,135,224,164,130,224,164,166,224,165,136,224,164,159,224,165,141,224,164,\n184,224,164,168,224,164,149,224,165,141,224,164,182,224,164,190,224,164,184,224,\n164,190,224,164,174,224,164,168,224,165,135,224,164,133,224,164,166,224,164,190,\n224,164,178,224,164,164,224,164,172,224,164,191,224,164,156,224,164,178,224,165,\n128,224,164,170,224,165,129,224,164,176,224,165,130,224,164,183,224,164,185,224,\n164,191,224,164,130,224,164,166,224,165,128,224,164,174,224,164,191,224,164,164,\n224,165,141,224,164,176,224,164,149,224,164,181,224,164,191,224,164,164,224,164,\n190,224,164,176,224,165,129,224,164,170,224,164,175,224,165,135,224,164,184,224,\n165,141,224,164,165,224,164,190,224,164,168,224,164,149,224,164,176,224,165,139,\n224,164,161,224,164,188,224,164,174,224,165,129,224,164,149,224,165,141,224,164,\n164,224,164,175,224,165,139,224,164,156,224,164,168,224,164,190,224,164,149,224,\n165,131,224,164,170,224,164,175,224,164,190,224,164,170,224,165,139,224,164,184,\n224,165,141,224,164,159,224,164,152,224,164,176,224,165,135,224,164,178,224,165,\n130,224,164,149,224,164,190,224,164,176,224,165,141,224,164,175,224,164,181,224,\n164,191,224,164,154,224,164,190,224,164,176,224,164,184,224,165,130,224,164,154,\n224,164,168,224,164,190,224,164,174,224,165,130,224,164,178,224,165,141,224,164,\n175,224,164,166,224,165,135,224,164,150,224,165,135,224,164,130,224,164,185,224,\n164,174,224,165,135,224,164,182,224,164,190,224,164,184,224,165,141,224,164,149,\n224,165,130,224,164,178,224,164,174,224,165,136,224,164,130,224,164,168,224,165,\n135,224,164,164,224,165,136,224,164,175,224,164,190,224,164,176,224,164,156,224,\n164,191,224,164,184,224,164,149,224,165,135,114,115,115,43,120,109,108,34,32,116\n,105,116,108,101,61,34,45,116,121,112,101,34,32,99,111,110,116,101,110,116,61,34\n,116,105,116,108,101,34,32,99,111,110,116,101,110,116,61,34,97,116,32,116,104,\n101,32,115,97,109,101,32,116,105,109,101,46,106,115,34,62,60,47,115,99,114,105,\n112,116,62,10,60,34,32,109,101,116,104,111,100,61,34,112,111,115,116,34,32,60,47\n,115,112,97,110,62,60,47,97,62,60,47,108,105,62,118,101,114,116,105,99,97,108,45\n,97,108,105,103,110,58,116,47,106,113,117,101,114,121,46,109,105,110,46,106,115,\n34,62,46,99,108,105,99,107,40,102,117,110,99,116,105,111,110,40,32,115,116,121,\n108,101,61,34,112,97,100,100,105,110,103,45,125,41,40,41,59,10,60,47,115,99,114,\n105,112,116,62,10,60,47,115,112,97,110,62,60,97,32,104,114,101,102,61,34,60,97,\n32,104,114,101,102,61,34,104,116,116,112,58,47,47,41,59,32,114,101,116,117,114,\n110,32,102,97,108,115,101,59,116,101,120,116,45,100,101,99,111,114,97,116,105,\n111,110,58,32,115,99,114,111,108,108,105,110,103,61,34,110,111,34,32,98,111,114,\n100,101,114,45,99,111,108,108,97,112,115,101,58,97,115,115,111,99,105,97,116,101\n,100,32,119,105,116,104,32,66,97,104,97,115,97,32,73,110,100,111,110,101,115,105\n,97,69,110,103,108,105,115,104,32,108,97,110,103,117,97,103,101,60,116,101,120,\n116,32,120,109,108,58,115,112,97,99,101,61,46,103,105,102,34,32,98,111,114,100,\n101,114,61,34,48,34,60,47,98,111,100,121,62,10,60,47,104,116,109,108,62,10,111,\n118,101,114,102,108,111,119,58,104,105,100,100,101,110,59,105,109,103,32,115,114\n,99,61,34,104,116,116,112,58,47,47,97,100,100,69,118,101,110,116,76,105,115,116,\n101,110,101,114,114,101,115,112,111,110,115,105,98,108,101,32,102,111,114,32,115\n,46,106,115,34,62,60,47,115,99,114,105,112,116,62,10,47,102,97,118,105,99,111,\n110,46,105,99,111,34,32,47,62,111,112,101,114,97,116,105,110,103,32,115,121,115,\n116,101,109,34,32,115,116,121,108,101,61,34,119,105,100,116,104,58,49,116,97,114\n,103,101,116,61,34,95,98,108,97,110,107,34,62,83,116,97,116,101,32,85,110,105,\n118,101,114,115,105,116,121,116,101,120,116,45,97,108,105,103,110,58,108,101,102\n,116,59,10,100,111,99,117,109,101,110,116,46,119,114,105,116,101,40,44,32,105,\n110,99,108,117,100,105,110,103,32,116,104,101,32,97,114,111,117,110,100,32,116,\n104,101,32,119,111,114,108,100,41,59,13,10,60,47,115,99,114,105,112,116,62,13,10\n,60,34,32,115,116,121,108,101,61,34,104,101,105,103,104,116,58,59,111,118,101,\n114,102,108,111,119,58,104,105,100,100,101,110,109,111,114,101,32,105,110,102,\n111,114,109,97,116,105,111,110,97,110,32,105,110,116,101,114,110,97,116,105,111,\n110,97,108,97,32,109,101,109,98,101,114,32,111,102,32,116,104,101,32,111,110,101\n,32,111,102,32,116,104,101,32,102,105,114,115,116,99,97,110,32,98,101,32,102,111\n,117,110,100,32,105,110,32,60,47,100,105,118,62,10,9,9,60,47,100,105,118,62,10,\n100,105,115,112,108,97,121,58,32,110,111,110,101,59,34,62,34,32,47,62,10,60,108,\n105,110,107,32,114,101,108,61,34,10,32,32,40,102,117,110,99,116,105,111,110,40,\n41,32,123,116,104,101,32,49,53,116,104,32,99,101,110,116,117,114,121,46,112,114,\n101,118,101,110,116,68,101,102,97,117,108,116,40,108,97,114,103,101,32,110,117,\n109,98,101,114,32,111,102,32,66,121,122,97,110,116,105,110,101,32,69,109,112,105\n,114,101,46,106,112,103,124,116,104,117,109,98,124,108,101,102,116,124,118,97,\n115,116,32,109,97,106,111,114,105,116,121,32,111,102,109,97,106,111,114,105,116,\n121,32,111,102,32,116,104,101,32,32,97,108,105,103,110,61,34,99,101,110,116,101,\n114,34,62,85,110,105,118,101,114,115,105,116,121,32,80,114,101,115,115,100,111,\n109,105,110,97,116,101,100,32,98,121,32,116,104,101,83,101,99,111,110,100,32,87,\n111,114,108,100,32,87,97,114,100,105,115,116,114,105,98,117,116,105,111,110,32,\n111,102,32,115,116,121,108,101,61,34,112,111,115,105,116,105,111,110,58,116,104,\n101,32,114,101,115,116,32,111,102,32,116,104,101,32,99,104,97,114,97,99,116,101,\n114,105,122,101,100,32,98,121,32,114,101,108,61,34,110,111,102,111,108,108,111,\n119,34,62,100,101,114,105,118,101,115,32,102,114,111,109,32,116,104,101,114,97,\n116,104,101,114,32,116,104,97,110,32,116,104,101,32,97,32,99,111,109,98,105,110,\n97,116,105,111,110,32,111,102,115,116,121,108,101,61,34,119,105,100,116,104,58,\n49,48,48,69,110,103,108,105,115,104,45,115,112,101,97,107,105,110,103,99,111,109\n,112,117,116,101,114,32,115,99,105,101,110,99,101,98,111,114,100,101,114,61,34,\n48,34,32,97,108,116,61,34,116,104,101,32,101,120,105,115,116,101,110,99,101,32,\n111,102,68,101,109,111,99,114,97,116,105,99,32,80,97,114,116,121,34,32,115,116,\n121,108,101,61,34,109,97,114,103,105,110,45,70,111,114,32,116,104,105,115,32,114\n,101,97,115,111,110,44,46,106,115,34,62,60,47,115,99,114,105,112,116,62,10,9,115\n,66,121,84,97,103,78,97,109,101,40,115,41,91,48,93,106,115,34,62,60,47,115,99,\n114,105,112,116,62,13,10,60,46,106,115,34,62,60,47,115,99,114,105,112,116,62,13,\n10,108,105,110,107,32,114,101,108,61,34,105,99,111,110,34,32,39,32,97,108,116,61\n,39,39,32,99,108,97,115,115,61,39,102,111,114,109,97,116,105,111,110,32,111,102,\n32,116,104,101,118,101,114,115,105,111,110,115,32,111,102,32,116,104,101,32,60,\n47,97,62,60,47,100,105,118,62,60,47,100,105,118,62,47,112,97,103,101,62,10,32,32\n,60,112,97,103,101,62,10,60,100,105,118,32,99,108,97,115,115,61,34,99,111,110,\n116,98,101,99,97,109,101,32,116,104,101,32,102,105,114,115,116,98,97,104,97,115,\n97,32,73,110,100,111,110,101,115,105,97,101,110,103,108,105,115,104,32,40,115,\n105,109,112,108,101,41,206,149,206,187,206,187,206,183,206,189,206,185,206,186,\n206,172,209,133,209,128,208,178,208,176,209,130,209,129,208,186,208,184,208,186,\n208,190,208,188,208,191,208,176,208,189,208,184,208,184,209,143,208,178,208,187,\n209,143,208,181,209,130,209,129,209,143,208,148,208,190,208,177,208,176,208,178,\n208,184,209,130,209,140,209,135,208,181,208,187,208,190,208,178,208,181,208,186,\n208,176,209,128,208,176,208,183,208,178,208,184,209,130,208,184,209,143,208,152,\n208,189,209,130,208,181,209,128,208,189,208,181,209,130,208,158,209,130,208,178,\n208,181,209,130,208,184,209,130,209,140,208,189,208,176,208,191,209,128,208,184,\n208,188,208,181,209,128,208,184,208,189,209,130,208,181,209,128,208,189,208,181,\n209,130,208,186,208,190,209,130,208,190,209,128,208,190,208,179,208,190,209,129,\n209,130,209,128,208,176,208,189,208,184,209,134,209,139,208,186,208,176,209,135,\n208,181,209,129,209,130,208,178,208,181,209,131,209,129,208,187,208,190,208,178,\n208,184,209,143,209,133,208,191,209,128,208,190,208,177,208,187,208,181,208,188,\n209,139,208,191,208,190,208,187,209,131,209,135,208,184,209,130,209,140,209,143,\n208,178,208,187,209,143,209,142,209,130,209,129,209,143,208,189,208,176,208,184,\n208,177,208,190,208,187,208,181,208,181,208,186,208,190,208,188,208,191,208,176,\n208,189,208,184,209,143,208,178,208,189,208,184,208,188,208,176,208,189,208,184,\n208,181,209,129,209,128,208,181,208,180,209,129,209,130,208,178,208,176,216,167,\n217,132,217,133,217,136,216,167,216,182,217,138,216,185,216,167,217,132,216,177,\n216,166,217,138,216,179,217,138,216,169,216,167,217,132,216,167,217,134,216,170,\n217,130,216,167,217,132,217,133,216,180,216,167,216,177,217,131,216,167,216,170,\n217,131,216,167,217,132,216,179,217,138,216,167,216,177,216,167,216,170,216,167,\n217,132,217,133,217,131,216,170,217,136,216,168,216,169,216,167,217,132,216,179,\n216,185,217,136,216,175,217,138,216,169,216,167,216,173,216,181,216,167,216,166,\n217,138,216,167,216,170,216,167,217,132,216,185,216,167,217,132,217,133,217,138,\n216,169,216,167,217,132,216,181,217,136,216,170,217,138,216,167,216,170,216,167,\n217,132,216,167,217,134,216,170,216,177,217,134,216,170,216,167,217,132,216,170,\n216,181,216,167,217,133,217,138,217,133,216,167,217,132,216,165,216,179,217,132,\n216,167,217,133,217,138,216,167,217,132,217,133,216,180,216,167,216,177,217,131,\n216,169,216,167,217,132,217,133,216,177,216,166,217,138,216,167,216,170,114,111,\n98,111,116,115,34,32,99,111,110,116,101,110,116,61,34,60,100,105,118,32,105,100,\n61,34,102,111,111,116,101,114,34,62,116,104,101,32,85,110,105,116,101,100,32,83,\n116,97,116,101,115,60,105,109,103,32,115,114,99,61,34,104,116,116,112,58,47,47,\n46,106,112,103,124,114,105,103,104,116,124,116,104,117,109,98,124,46,106,115,34,\n62,60,47,115,99,114,105,112,116,62,13,10,60,108,111,99,97,116,105,111,110,46,112\n,114,111,116,111,99,111,108,102,114,97,109,101,98,111,114,100,101,114,61,34,48,\n34,32,115,34,32,47,62,10,60,109,101,116,97,32,110,97,109,101,61,34,60,47,97,62,\n60,47,100,105,118,62,60,47,100,105,118,62,60,102,111,110,116,45,119,101,105,103,\n104,116,58,98,111,108,100,59,38,113,117,111,116,59,32,97,110,100,32,38,113,117,\n111,116,59,100,101,112,101,110,100,105,110,103,32,111,110,32,116,104,101,32,109,\n97,114,103,105,110,58,48,59,112,97,100,100,105,110,103,58,34,32,114,101,108,61,\n34,110,111,102,111,108,108,111,119,34,32,80,114,101,115,105,100,101,110,116,32,\n111,102,32,116,104,101,32,116,119,101,110,116,105,101,116,104,32,99,101,110,116,\n117,114,121,101,118,105,115,105,111,110,62,10,32,32,60,47,112,97,103,101,73,110,\n116,101,114,110,101,116,32,69,120,112,108,111,114,101,114,97,46,97,115,121,110,\n99,32,61,32,116,114,117,101,59,13,10,105,110,102,111,114,109,97,116,105,111,110,\n32,97,98,111,117,116,60,100,105,118,32,105,100,61,34,104,101,97,100,101,114,34,\n62,34,32,97,99,116,105,111,110,61,34,104,116,116,112,58,47,47,60,97,32,104,114,\n101,102,61,34,104,116,116,112,115,58,47,47,60,100,105,118,32,105,100,61,34,99,\n111,110,116,101,110,116,34,60,47,100,105,118,62,13,10,60,47,100,105,118,62,13,10\n,60,100,101,114,105,118,101,100,32,102,114,111,109,32,116,104,101,32,60,105,109,\n103,32,115,114,99,61,39,104,116,116,112,58,47,47,97,99,99,111,114,100,105,110,\n103,32,116,111,32,116,104,101,32,10,60,47,98,111,100,121,62,10,60,47,104,116,109\n,108,62,10,115,116,121,108,101,61,34,102,111,110,116,45,115,105,122,101,58,115,\n99,114,105,112,116,32,108,97,110,103,117,97,103,101,61,34,65,114,105,97,108,44,\n32,72,101,108,118,101,116,105,99,97,44,60,47,97,62,60,115,112,97,110,32,99,108,\n97,115,115,61,34,60,47,115,99,114,105,112,116,62,60,115,99,114,105,112,116,32,\n112,111,108,105,116,105,99,97,108,32,112,97,114,116,105,101,115,116,100,62,60,47\n,116,114,62,60,47,116,97,98,108,101,62,60,104,114,101,102,61,34,104,116,116,112,\n58,47,47,119,119,119,46,105,110,116,101,114,112,114,101,116,97,116,105,111,110,\n32,111,102,114,101,108,61,34,115,116,121,108,101,115,104,101,101,116,34,32,100,\n111,99,117,109,101,110,116,46,119,114,105,116,101,40,39,60,99,104,97,114,115,101\n,116,61,34,117,116,102,45,56,34,62,10,98,101,103,105,110,110,105,110,103,32,111,\n102,32,116,104,101,32,114,101,118,101,97,108,101,100,32,116,104,97,116,32,116,\n104,101,116,101,108,101,118,105,115,105,111,110,32,115,101,114,105,101,115,34,32\n,114,101,108,61,34,110,111,102,111,108,108,111,119,34,62,32,116,97,114,103,101,\n116,61,34,95,98,108,97,110,107,34,62,99,108,97,105,109,105,110,103,32,116,104,97\n,116,32,116,104,101,104,116,116,112,37,51,65,37,50,70,37,50,70,119,119,119,46,\n109,97,110,105,102,101,115,116,97,116,105,111,110,115,32,111,102,80,114,105,109,\n101,32,77,105,110,105,115,116,101,114,32,111,102,105,110,102,108,117,101,110,99,\n101,100,32,98,121,32,116,104,101,99,108,97,115,115,61,34,99,108,101,97,114,102,\n105,120,34,62,47,100,105,118,62,13,10,60,47,100,105,118,62,13,10,13,10,116,104,\n114,101,101,45,100,105,109,101,110,115,105,111,110,97,108,67,104,117,114,99,104,\n32,111,102,32,69,110,103,108,97,110,100,111,102,32,78,111,114,116,104,32,67,97,\n114,111,108,105,110,97,115,113,117,97,114,101,32,107,105,108,111,109,101,116,114\n,101,115,46,97,100,100,69,118,101,110,116,76,105,115,116,101,110,101,114,100,105\n,115,116,105,110,99,116,32,102,114,111,109,32,116,104,101,99,111,109,109,111,110\n,108,121,32,107,110,111,119,110,32,97,115,80,104,111,110,101,116,105,99,32,65,\n108,112,104,97,98,101,116,100,101,99,108,97,114,101,100,32,116,104,97,116,32,116\n,104,101,99,111,110,116,114,111,108,108,101,100,32,98,121,32,116,104,101,66,101,\n110,106,97,109,105,110,32,70,114,97,110,107,108,105,110,114,111,108,101,45,112,\n108,97,121,105,110,103,32,103,97,109,101,116,104,101,32,85,110,105,118,101,114,\n115,105,116,121,32,111,102,105,110,32,87,101,115,116,101,114,110,32,69,117,114,\n111,112,101,112,101,114,115,111,110,97,108,32,99,111,109,112,117,116,101,114,80,\n114,111,106,101,99,116,32,71,117,116,101,110,98,101,114,103,114,101,103,97,114,\n100,108,101,115,115,32,111,102,32,116,104,101,104,97,115,32,98,101,101,110,32,\n112,114,111,112,111,115,101,100,116,111,103,101,116,104,101,114,32,119,105,116,\n104,32,116,104,101,62,60,47,108,105,62,60,108,105,32,99,108,97,115,115,61,34,105\n,110,32,115,111,109,101,32,99,111,117,110,116,114,105,101,115,109,105,110,46,106\n,115,34,62,60,47,115,99,114,105,112,116,62,111,102,32,116,104,101,32,112,111,112\n,117,108,97,116,105,111,110,111,102,102,105,99,105,97,108,32,108,97,110,103,117,\n97,103,101,60,105,109,103,32,115,114,99,61,34,105,109,97,103,101,115,47,105,100,\n101,110,116,105,102,105,101,100,32,98,121,32,116,104,101,110,97,116,117,114,97,\n108,32,114,101,115,111,117,114,99,101,115,99,108,97,115,115,105,102,105,99,97,\n116,105,111,110,32,111,102,99,97,110,32,98,101,32,99,111,110,115,105,100,101,114\n,101,100,113,117,97,110,116,117,109,32,109,101,99,104,97,110,105,99,115,78,101,\n118,101,114,116,104,101,108,101,115,115,44,32,116,104,101,109,105,108,108,105,\n111,110,32,121,101,97,114,115,32,97,103,111,60,47,98,111,100,121,62,13,10,60,47,\n104,116,109,108,62,13,206,149,206,187,206,187,206,183,206,189,206,185,206,186,\n206,172,10,116,97,107,101,32,97,100,118,97,110,116,97,103,101,32,111,102,97,110,\n100,44,32,97,99,99,111,114,100,105,110,103,32,116,111,97,116,116,114,105,98,117,\n116,101,100,32,116,111,32,116,104,101,77,105,99,114,111,115,111,102,116,32,87,\n105,110,100,111,119,115,116,104,101,32,102,105,114,115,116,32,99,101,110,116,117\n,114,121,117,110,100,101,114,32,116,104,101,32,99,111,110,116,114,111,108,100,\n105,118,32,99,108,97,115,115,61,34,104,101,97,100,101,114,115,104,111,114,116,\n108,121,32,97,102,116,101,114,32,116,104,101,110,111,116,97,98,108,101,32,101,\n120,99,101,112,116,105,111,110,116,101,110,115,32,111,102,32,116,104,111,117,115\n,97,110,100,115,115,101,118,101,114,97,108,32,100,105,102,102,101,114,101,110,\n116,97,114,111,117,110,100,32,116,104,101,32,119,111,114,108,100,46,114,101,97,\n99,104,105,110,103,32,109,105,108,105,116,97,114,121,105,115,111,108,97,116,101,\n100,32,102,114,111,109,32,116,104,101,111,112,112,111,115,105,116,105,111,110,32\n,116,111,32,116,104,101,116,104,101,32,79,108,100,32,84,101,115,116,97,109,101,\n110,116,65,102,114,105,99,97,110,32,65,109,101,114,105,99,97,110,115,105,110,115\n,101,114,116,101,100,32,105,110,116,111,32,116,104,101,115,101,112,97,114,97,116\n,101,32,102,114,111,109,32,116,104,101,109,101,116,114,111,112,111,108,105,116,\n97,110,32,97,114,101,97,109,97,107,101,115,32,105,116,32,112,111,115,115,105,98,\n108,101,97,99,107,110,111,119,108,101,100,103,101,100,32,116,104,97,116,97,114,\n103,117,97,98,108,121,32,116,104,101,32,109,111,115,116,116,121,112,101,61,34,\n116,101,120,116,47,99,115,115,34,62,10,116,104,101,32,73,110,116,101,114,110,97,\n116,105,111,110,97,108,65,99,99,111,114,100,105,110,103,32,116,111,32,116,104,\n101,32,112,101,61,34,116,101,120,116,47,99,115,115,34,32,47,62,10,99,111,105,110\n,99,105,100,101,32,119,105,116,104,32,116,104,101,116,119,111,45,116,104,105,114\n,100,115,32,111,102,32,116,104,101,68,117,114,105,110,103,32,116,104,105,115,32,\n116,105,109,101,44,100,117,114,105,110,103,32,116,104,101,32,112,101,114,105,111\n,100,97,110,110,111,117,110,99,101,100,32,116,104,97,116,32,104,101,116,104,101,\n32,105,110,116,101,114,110,97,116,105,111,110,97,108,97,110,100,32,109,111,114,\n101,32,114,101,99,101,110,116,108,121,98,101,108,105,101,118,101,100,32,116,104,\n97,116,32,116,104,101,99,111,110,115,99,105,111,117,115,110,101,115,115,32,97,\n110,100,102,111,114,109,101,114,108,121,32,107,110,111,119,110,32,97,115,115,117\n,114,114,111,117,110,100,101,100,32,98,121,32,116,104,101,102,105,114,115,116,32\n,97,112,112,101,97,114,101,100,32,105,110,111,99,99,97,115,105,111,110,97,108,\n108,121,32,117,115,101,100,112,111,115,105,116,105,111,110,58,97,98,115,111,108,\n117,116,101,59,34,32,116,97,114,103,101,116,61,34,95,98,108,97,110,107,34,32,112\n,111,115,105,116,105,111,110,58,114,101,108,97,116,105,118,101,59,116,101,120,\n116,45,97,108,105,103,110,58,99,101,110,116,101,114,59,106,97,120,47,108,105,98,\n115,47,106,113,117,101,114,121,47,49,46,98,97,99,107,103,114,111,117,110,100,45,\n99,111,108,111,114,58,35,116,121,112,101,61,34,97,112,112,108,105,99,97,116,105,\n111,110,47,97,110,103,117,97,103,101,34,32,99,111,110,116,101,110,116,61,34,60,\n109,101,116,97,32,104,116,116,112,45,101,113,117,105,118,61,34,80,114,105,118,97\n,99,121,32,80,111,108,105,99,121,60,47,97,62,101,40,34,37,51,67,115,99,114,105,\n112,116,32,115,114,99,61,39,34,32,116,97,114,103,101,116,61,34,95,98,108,97,110,\n107,34,62,79,110,32,116,104,101,32,111,116,104,101,114,32,104,97,110,100,44,46,\n106,112,103,124,116,104,117,109,98,124,114,105,103,104,116,124,50,60,47,100,105,\n118,62,60,100,105,118,32,99,108,97,115,115,61,34,60,100,105,118,32,115,116,121,\n108,101,61,34,102,108,111,97,116,58,110,105,110,101,116,101,101,110,116,104,32,\n99,101,110,116,117,114,121,60,47,98,111,100,121,62,13,10,60,47,104,116,109,108,\n62,13,10,60,105,109,103,32,115,114,99,61,34,104,116,116,112,58,47,47,115,59,116,\n101,120,116,45,97,108,105,103,110,58,99,101,110,116,101,114,102,111,110,116,45,\n119,101,105,103,104,116,58,32,98,111,108,100,59,32,65,99,99,111,114,100,105,110,\n103,32,116,111,32,116,104,101,32,100,105,102,102,101,114,101,110,99,101,32,98,\n101,116,119,101,101,110,34,32,102,114,97,109,101,98,111,114,100,101,114,61,34,48\n,34,32,34,32,115,116,121,108,101,61,34,112,111,115,105,116,105,111,110,58,108,\n105,110,107,32,104,114,101,102,61,34,104,116,116,112,58,47,47,104,116,109,108,52\n,47,108,111,111,115,101,46,100,116,100,34,62,10,100,117,114,105,110,103,32,116,\n104,105,115,32,112,101,114,105,111,100,60,47,116,100,62,60,47,116,114,62,60,47,\n116,97,98,108,101,62,99,108,111,115,101,108,121,32,114,101,108,97,116,101,100,32\n,116,111,102,111,114,32,116,104,101,32,102,105,114,115,116,32,116,105,109,101,59\n,102,111,110,116,45,119,101,105,103,104,116,58,98,111,108,100,59,105,110,112,117\n,116,32,116,121,112,101,61,34,116,101,120,116,34,32,60,115,112,97,110,32,115,116\n,121,108,101,61,34,102,111,110,116,45,111,110,114,101,97,100,121,115,116,97,116,\n101,99,104,97,110,103,101,9,60,100,105,118,32,99,108,97,115,115,61,34,99,108,101\n,97,114,100,111,99,117,109,101,110,116,46,108,111,99,97,116,105,111,110,46,32,70\n,111,114,32,101,120,97,109,112,108,101,44,32,116,104,101,32,97,32,119,105,100,\n101,32,118,97,114,105,101,116,121,32,111,102,32,60,33,68,79,67,84,89,80,69,32,\n104,116,109,108,62,13,10,60,38,110,98,115,112,59,38,110,98,115,112,59,38,110,98,\n115,112,59,34,62,60,97,32,104,114,101,102,61,34,104,116,116,112,58,47,47,115,116\n,121,108,101,61,34,102,108,111,97,116,58,108,101,102,116,59,99,111,110,99,101,\n114,110,101,100,32,119,105,116,104,32,116,104,101,61,104,116,116,112,37,51,65,37\n,50,70,37,50,70,119,119,119,46,105,110,32,112,111,112,117,108,97,114,32,99,117,\n108,116,117,114,101,116,121,112,101,61,34,116,101,120,116,47,99,115,115,34,32,47\n,62,105,116,32,105,115,32,112,111,115,115,105,98,108,101,32,116,111,32,72,97,114\n,118,97,114,100,32,85,110,105,118,101,114,115,105,116,121,116,121,108,101,115,\n104,101,101,116,34,32,104,114,101,102,61,34,47,116,104,101,32,109,97,105,110,32,\n99,104,97,114,97,99,116,101,114,79,120,102,111,114,100,32,85,110,105,118,101,114\n,115,105,116,121,32,32,110,97,109,101,61,34,107,101,121,119,111,114,100,115,34,\n32,99,115,116,121,108,101,61,34,116,101,120,116,45,97,108,105,103,110,58,116,104\n,101,32,85,110,105,116,101,100,32,75,105,110,103,100,111,109,102,101,100,101,114\n,97,108,32,103,111,118,101,114,110,109,101,110,116,60,100,105,118,32,115,116,121\n,108,101,61,34,109,97,114,103,105,110,32,100,101,112,101,110,100,105,110,103,32,\n111,110,32,116,104,101,32,100,101,115,99,114,105,112,116,105,111,110,32,111,102,\n32,116,104,101,60,100,105,118,32,99,108,97,115,115,61,34,104,101,97,100,101,114,\n46,109,105,110,46,106,115,34,62,60,47,115,99,114,105,112,116,62,100,101,115,116,\n114,117,99,116,105,111,110,32,111,102,32,116,104,101,115,108,105,103,104,116,108\n,121,32,100,105,102,102,101,114,101,110,116,105,110,32,97,99,99,111,114,100,97,\n110,99,101,32,119,105,116,104,116,101,108,101,99,111,109,109,117,110,105,99,97,\n116,105,111,110,115,105,110,100,105,99,97,116,101,115,32,116,104,97,116,32,116,\n104,101,115,104,111,114,116,108,121,32,116,104,101,114,101,97,102,116,101,114,\n101,115,112,101,99,105,97,108,108,121,32,105,110,32,116,104,101,32,69,117,114,\n111,112,101,97,110,32,99,111,117,110,116,114,105,101,115,72,111,119,101,118,101,\n114,44,32,116,104,101,114,101,32,97,114,101,115,114,99,61,34,104,116,116,112,58,\n47,47,115,116,97,116,105,99,115,117,103,103,101,115,116,101,100,32,116,104,97,\n116,32,116,104,101,34,32,115,114,99,61,34,104,116,116,112,58,47,47,119,119,119,\n46,97,32,108,97,114,103,101,32,110,117,109,98,101,114,32,111,102,32,84,101,108,\n101,99,111,109,109,117,110,105,99,97,116,105,111,110,115,34,32,114,101,108,61,34\n,110,111,102,111,108,108,111,119,34,32,116,72,111,108,121,32,82,111,109,97,110,\n32,69,109,112,101,114,111,114,97,108,109,111,115,116,32,101,120,99,108,117,115,\n105,118,101,108,121,34,32,98,111,114,100,101,114,61,34,48,34,32,97,108,116,61,34\n,83,101,99,114,101,116,97,114,121,32,111,102,32,83,116,97,116,101,99,117,108,109\n,105,110,97,116,105,110,103,32,105,110,32,116,104,101,67,73,65,32,87,111,114,108\n,100,32,70,97,99,116,98,111,111,107,116,104,101,32,109,111,115,116,32,105,109,\n112,111,114,116,97,110,116,97,110,110,105,118,101,114,115,97,114,121,32,111,102,\n32,116,104,101,115,116,121,108,101,61,34,98,97,99,107,103,114,111,117,110,100,45\n,60,108,105,62,60,101,109,62,60,97,32,104,114,101,102,61,34,47,116,104,101,32,65\n,116,108,97,110,116,105,99,32,79,99,101,97,110,115,116,114,105,99,116,108,121,32\n,115,112,101,97,107,105,110,103,44,115,104,111,114,116,108,121,32,98,101,102,111\n,114,101,32,116,104,101,100,105,102,102,101,114,101,110,116,32,116,121,112,101,\n115,32,111,102,116,104,101,32,79,116,116,111,109,97,110,32,69,109,112,105,114,\n101,62,60,105,109,103,32,115,114,99,61,34,104,116,116,112,58,47,47,65,110,32,73,\n110,116,114,111,100,117,99,116,105,111,110,32,116,111,99,111,110,115,101,113,117\n,101,110,99,101,32,111,102,32,116,104,101,100,101,112,97,114,116,117,114,101,32,\n102,114,111,109,32,116,104,101,67,111,110,102,101,100,101,114,97,116,101,32,83,\n116,97,116,101,115,105,110,100,105,103,101,110,111,117,115,32,112,101,111,112,\n108,101,115,80,114,111,99,101,101,100,105,110,103,115,32,111,102,32,116,104,101,\n105,110,102,111,114,109,97,116,105,111,110,32,111,110,32,116,104,101,116,104,101\n,111,114,105,101,115,32,104,97,118,101,32,98,101,101,110,105,110,118,111,108,118\n,101,109,101,110,116,32,105,110,32,116,104,101,100,105,118,105,100,101,100,32,\n105,110,116,111,32,116,104,114,101,101,97,100,106,97,99,101,110,116,32,99,111,\n117,110,116,114,105,101,115,105,115,32,114,101,115,112,111,110,115,105,98,108,\n101,32,102,111,114,100,105,115,115,111,108,117,116,105,111,110,32,111,102,32,116\n,104,101,99,111,108,108,97,98,111,114,97,116,105,111,110,32,119,105,116,104,119,\n105,100,101,108,121,32,114,101,103,97,114,100,101,100,32,97,115,104,105,115,32,\n99,111,110,116,101,109,112,111,114,97,114,105,101,115,102,111,117,110,100,105,\n110,103,32,109,101,109,98,101,114,32,111,102,68,111,109,105,110,105,99,97,110,32\n,82,101,112,117,98,108,105,99,103,101,110,101,114,97,108,108,121,32,97,99,99,101\n,112,116,101,100,116,104,101,32,112,111,115,115,105,98,105,108,105,116,121,32,\n111,102,97,114,101,32,97,108,115,111,32,97,118,97,105,108,97,98,108,101,117,110,\n100,101,114,32,99,111,110,115,116,114,117,99,116,105,111,110,114,101,115,116,111\n,114,97,116,105,111,110,32,111,102,32,116,104,101,116,104,101,32,103,101,110,101\n,114,97,108,32,112,117,98,108,105,99,105,115,32,97,108,109,111,115,116,32,101,\n110,116,105,114,101,108,121,112,97,115,115,101,115,32,116,104,114,111,117,103,\n104,32,116,104,101,104,97,115,32,98,101,101,110,32,115,117,103,103,101,115,116,\n101,100,99,111,109,112,117,116,101,114,32,97,110,100,32,118,105,100,101,111,71,\n101,114,109,97,110,105,99,32,108,97,110,103,117,97,103,101,115,32,97,99,99,111,\n114,100,105,110,103,32,116,111,32,116,104,101,32,100,105,102,102,101,114,101,110\n,116,32,102,114,111,109,32,116,104,101,115,104,111,114,116,108,121,32,97,102,116\n,101,114,119,97,114,100,115,104,114,101,102,61,34,104,116,116,112,115,58,47,47,\n119,119,119,46,114,101,99,101,110,116,32,100,101,118,101,108,111,112,109,101,110\n,116,66,111,97,114,100,32,111,102,32,68,105,114,101,99,116,111,114,115,60,100,\n105,118,32,99,108,97,115,115,61,34,115,101,97,114,99,104,124,32,60,97,32,104,114\n,101,102,61,34,104,116,116,112,58,47,47,73,110,32,112,97,114,116,105,99,117,108,\n97,114,44,32,116,104,101,77,117,108,116,105,112,108,101,32,102,111,111,116,110,\n111,116,101,115,111,114,32,111,116,104,101,114,32,115,117,98,115,116,97,110,99,\n101,116,104,111,117,115,97,110,100,115,32,111,102,32,121,101,97,114,115,116,114,\n97,110,115,108,97,116,105,111,110,32,111,102,32,116,104,101,60,47,100,105,118,62\n,13,10,60,47,100,105,118,62,13,10,13,10,60,97,32,104,114,101,102,61,34,105,110,\n100,101,120,46,112,104,112,119,97,115,32,101,115,116,97,98,108,105,115,104,101,\n100,32,105,110,109,105,110,46,106,115,34,62,60,47,115,99,114,105,112,116,62,10,\n112,97,114,116,105,99,105,112,97,116,101,32,105,110,32,116,104,101,97,32,115,116\n,114,111,110,103,32,105,110,102,108,117,101,110,99,101,115,116,121,108,101,61,34\n,109,97,114,103,105,110,45,116,111,112,58,114,101,112,114,101,115,101,110,116,\n101,100,32,98,121,32,116,104,101,103,114,97,100,117,97,116,101,100,32,102,114,\n111,109,32,116,104,101,84,114,97,100,105,116,105,111,110,97,108,108,121,44,32,\n116,104,101,69,108,101,109,101,110,116,40,34,115,99,114,105,112,116,34,41,59,72,\n111,119,101,118,101,114,44,32,115,105,110,99,101,32,116,104,101,47,100,105,118,\n62,10,60,47,100,105,118,62,10,60,100,105,118,32,108,101,102,116,59,32,109,97,114\n,103,105,110,45,108,101,102,116,58,112,114,111,116,101,99,116,105,111,110,32,97,\n103,97,105,110,115,116,48,59,32,118,101,114,116,105,99,97,108,45,97,108,105,103,\n110,58,85,110,102,111,114,116,117,110,97,116,101,108,121,44,32,116,104,101,116,\n121,112,101,61,34,105,109,97,103,101,47,120,45,105,99,111,110,47,100,105,118,62,\n10,60,100,105,118,32,99,108,97,115,115,61,34,32,99,108,97,115,115,61,34,99,108,\n101,97,114,102,105,120,34,62,60,100,105,118,32,99,108,97,115,115,61,34,102,111,\n111,116,101,114,9,9,60,47,100,105,118,62,10,9,9,60,47,100,105,118,62,10,116,104,\n101,32,109,111,116,105,111,110,32,112,105,99,116,117,114,101,208,145,209,138,208\n,187,208,179,208,176,209,128,209,129,208,186,208,184,208,177,209,138,208,187,208\n,179,208,176,209,128,209,129,208,186,208,184,208,164,208,181,208,180,208,181,209\n,128,208,176,209,134,208,184,208,184,208,189,208,181,209,129,208,186,208,190,208\n,187,209,140,208,186,208,190,209,129,208,190,208,190,208,177,209,137,208,181,208\n,189,208,184,208,181,209,129,208,190,208,190,208,177,209,137,208,181,208,189,208\n,184,209,143,208,191,209,128,208,190,208,179,209,128,208,176,208,188,208,188,209\n,139,208,158,209,130,208,191,209,128,208,176,208,178,208,184,209,130,209,140,208\n,177,208,181,209,129,208,191,208,187,208,176,209,130,208,189,208,190,208,188,208\n,176,209,130,208,181,209,128,208,184,208,176,208,187,209,139,208,191,208,190,208\n,183,208,178,208,190,208,187,209,143,208,181,209,130,208,191,208,190,209,129,208\n,187,208,181,208,180,208,189,208,184,208,181,209,128,208,176,208,183,208,187,208\n,184,209,135,208,189,209,139,209,133,208,191,209,128,208,190,208,180,209,131,208\n,186,209,134,208,184,208,184,208,191,209,128,208,190,208,179,209,128,208,176,208\n,188,208,188,208,176,208,191,208,190,208,187,208,189,208,190,209,129,209,130,209\n,140,209,142,208,189,208,176,209,133,208,190,208,180,208,184,209,130,209,129,209\n,143,208,184,208,183,208,177,209,128,208,176,208,189,208,189,208,190,208,181,208\n,189,208,176,209,129,208,181,208,187,208,181,208,189,208,184,209,143,208,184,208\n,183,208,188,208,181,208,189,208,181,208,189,208,184,209,143,208,186,208,176,209\n,130,208,181,208,179,208,190,209,128,208,184,208,184,208,144,208,187,208,181,208\n,186,209,129,208,176,208,189,208,180,209,128,224,164,166,224,165,141,224,164,181\n,224,164,190,224,164,176,224,164,190,224,164,174,224,165,136,224,164,168,224,165\n,129,224,164,133,224,164,178,224,164,170,224,165,141,224,164,176,224,164,166,224\n,164,190,224,164,168,224,164,173,224,164,190,224,164,176,224,164,164,224,165,128\n,224,164,175,224,164,133,224,164,168,224,165,129,224,164,166,224,165,135,224,164\n,182,224,164,185,224,164,191,224,164,168,224,165,141,224,164,166,224,165,128,224\n,164,135,224,164,130,224,164,161,224,164,191,224,164,175,224,164,190,224,164,166\n,224,164,191,224,164,178,224,165,141,224,164,178,224,165,128,224,164,133,224,164\n,167,224,164,191,224,164,149,224,164,190,224,164,176,224,164,181,224,165,128,224\n,164,161,224,164,191,224,164,175,224,165,139,224,164,154,224,164,191,224,164,159\n,224,165,141,224,164,160,224,165,135,224,164,184,224,164,174,224,164,190,224,164\n,154,224,164,190,224,164,176,224,164,156,224,164,130,224,164,149,224,165,141,224\n,164,182,224,164,168,224,164,166,224,165,129,224,164,168,224,164,191,224,164,175\n,224,164,190,224,164,170,224,165,141,224,164,176,224,164,175,224,165,139,224,164\n,151,224,164,133,224,164,168,224,165,129,224,164,184,224,164,190,224,164,176,224\n,164,145,224,164,168,224,164,178,224,164,190,224,164,135,224,164,168,224,164,170\n,224,164,190,224,164,176,224,165,141,224,164,159,224,165,128,224,164,182,224,164\n,176,224,165,141,224,164,164,224,165,139,224,164,130,224,164,178,224,165,139,224\n,164,149,224,164,184,224,164,173,224,164,190,224,164,171,224,164,188,224,165,141\n,224,164,178,224,165,136,224,164,182,224,164,182,224,164,176,224,165,141,224,164\n,164,224,165,135,224,164,130,224,164,170,224,165,141,224,164,176,224,164,166,224\n,165,135,224,164,182,224,164,170,224,165,141,224,164,178,224,165,135,224,164,175\n,224,164,176,224,164,149,224,165,135,224,164,130,224,164,166,224,165,141,224,164\n,176,224,164,184,224,165,141,224,164,165,224,164,191,224,164,164,224,164,191,224\n,164,137,224,164,164,224,165,141,224,164,170,224,164,190,224,164,166,224,164,137\n,224,164,168,224,165,141,224,164,185,224,165,135,224,164,130,224,164,154,224,164\n,191,224,164,159,224,165,141,224,164,160,224,164,190,224,164,175,224,164,190,224\n,164,164,224,165,141,224,164,176,224,164,190,224,164,156,224,165,141,224,164,175\n,224,164,190,224,164,166,224,164,190,224,164,170,224,165,129,224,164,176,224,164\n,190,224,164,168,224,165,135,224,164,156,224,165,139,224,164,161,224,164,188,224\n,165,135,224,164,130,224,164,133,224,164,168,224,165,129,224,164,181,224,164,190\n,224,164,166,224,164,182,224,165,141,224,164,176,224,165,135,224,164,163,224,165\n,128,224,164,182,224,164,191,224,164,149,224,165,141,224,164,183,224,164,190,224\n,164,184,224,164,176,224,164,149,224,164,190,224,164,176,224,165,128,224,164,184\n,224,164,130,224,164,151,224,165,141,224,164,176,224,164,185,224,164,170,224,164\n,176,224,164,191,224,164,163,224,164,190,224,164,174,224,164,172,224,165,141,224\n,164,176,224,164,190,224,164,130,224,164,161,224,164,172,224,164,154,224,165,141\n,224,164,154,224,165,139,224,164,130,224,164,137,224,164,170,224,164,178,224,164\n,172,224,165,141,224,164,167,224,164,174,224,164,130,224,164,164,224,165,141,224\n,164,176,224,165,128,224,164,184,224,164,130,224,164,170,224,164,176,224,165,141\n,224,164,149,224,164,137,224,164,174,224,165,141,224,164,174,224,165,128,224,164\n,166,224,164,174,224,164,190,224,164,167,224,165,141,224,164,175,224,164,174,224\n,164,184,224,164,185,224,164,190,224,164,175,224,164,164,224,164,190,224,164,182\n,224,164,172,224,165,141,224,164,166,224,165,139,224,164,130,224,164,174,224,165\n,128,224,164,161,224,164,191,224,164,175,224,164,190,224,164,134,224,164,136,224\n,164,170,224,165,128,224,164,143,224,164,178,224,164,174,224,165,139,224,164,172\n,224,164,190,224,164,135,224,164,178,224,164,184,224,164,130,224,164,150,224,165\n,141,224,164,175,224,164,190,224,164,134,224,164,170,224,164,176,224,165,135,224\n,164,182,224,164,168,224,164,133,224,164,168,224,165,129,224,164,172,224,164,130\n,224,164,167,224,164,172,224,164,190,224,164,156,224,164,188,224,164,190,224,164\n,176,224,164,168,224,164,181,224,165,128,224,164,168,224,164,164,224,164,174,224\n,164,170,224,165,141,224,164,176,224,164,174,224,165,129,224,164,150,224,164,170\n,224,165,141,224,164,176,224,164,182,224,165,141,224,164,168,224,164,170,224,164\n,176,224,164,191,224,164,181,224,164,190,224,164,176,224,164,168,224,165,129,224\n,164,149,224,164,184,224,164,190,224,164,168,224,164,184,224,164,174,224,164,176\n,224,165,141,224,164,165,224,164,168,224,164,134,224,164,175,224,165,139,224,164\n,156,224,164,191,224,164,164,224,164,184,224,165,139,224,164,174,224,164,181,224\n,164,190,224,164,176,216,167,217,132,217,133,216,180,216,167,216,177,217,131,216\n,167,216,170,216,167,217,132,217,133,217,134,216,170,216,175,217,138,216,167,216\n,170,216,167,217,132,217,131,217,133,216,168,217,138,217,136,216,170,216,177,216\n,167,217,132,217,133,216,180,216,167,217,135,216,175,216,167,216,170,216,185,216\n,175,216,175,216,167,217,132,216,178,217,136,216,167,216,177,216,185,216,175,216\n,175,216,167,217,132,216,177,216,175,217,136,216,175,216,167,217,132,216,165,216\n,179,217,132,216,167,217,133,217,138,216,169,216,167,217,132,217,129,217,136,216\n,170,217,136,216,180,217,136,216,168,216,167,217,132,217,133,216,179,216,167,216\n,168,217,130,216,167,216,170,216,167,217,132,217,133,216,185,217,132,217,136,217\n,133,216,167,216,170,216,167,217,132,217,133,216,179,217,132,216,179,217,132,216\n,167,216,170,216,167,217,132,216,172,216,177,216,167,217,129,217,138,217,131,216\n,179,216,167,217,132,216,167,216,179,217,132,216,167,217,133,217,138,216,169,216\n,167,217,132,216,167,216,170,216,181,216,167,217,132,216,167,216,170,107,101,121\n,119,111,114,100,115,34,32,99,111,110,116,101,110,116,61,34,119,51,46,111,114,\n103,47,49,57,57,57,47,120,104,116,109,108,34,62,60,97,32,116,97,114,103,101,116,\n61,34,95,98,108,97,110,107,34,32,116,101,120,116,47,104,116,109,108,59,32,99,104\n,97,114,115,101,116,61,34,32,116,97,114,103,101,116,61,34,95,98,108,97,110,107,\n34,62,60,116,97,98,108,101,32,99,101,108,108,112,97,100,100,105,110,103,61,34,97\n,117,116,111,99,111,109,112,108,101,116,101,61,34,111,102,102,34,32,116,101,120,\n116,45,97,108,105,103,110,58,32,99,101,110,116,101,114,59,116,111,32,108,97,115,\n116,32,118,101,114,115,105,111,110,32,98,121,32,98,97,99,107,103,114,111,117,110\n,100,45,99,111,108,111,114,58,32,35,34,32,104,114,101,102,61,34,104,116,116,112,\n58,47,47,119,119,119,46,47,100,105,118,62,60,47,100,105,118,62,60,100,105,118,32\n,105,100,61,60,97,32,104,114,101,102,61,34,35,34,32,99,108,97,115,115,61,34,34,\n62,60,105,109,103,32,115,114,99,61,34,104,116,116,112,58,47,47,99,114,105,112,\n116,34,32,115,114,99,61,34,104,116,116,112,58,47,47,10,60,115,99,114,105,112,116\n,32,108,97,110,103,117,97,103,101,61,34,47,47,69,78,34,32,34,104,116,116,112,58,\n47,47,119,119,119,46,119,101,110,99,111,100,101,85,82,73,67,111,109,112,111,110,\n101,110,116,40,34,32,104,114,101,102,61,34,106,97,118,97,115,99,114,105,112,116,\n58,60,100,105,118,32,99,108,97,115,115,61,34,99,111,110,116,101,110,116,100,111,\n99,117,109,101,110,116,46,119,114,105,116,101,40,39,60,115,99,112,111,115,105,\n116,105,111,110,58,32,97,98,115,111,108,117,116,101,59,115,99,114,105,112,116,32\n,115,114,99,61,34,104,116,116,112,58,47,47,32,115,116,121,108,101,61,34,109,97,\n114,103,105,110,45,116,111,112,58,46,109,105,110,46,106,115,34,62,60,47,115,99,\n114,105,112,116,62,10,60,47,100,105,118,62,10,60,100,105,118,32,99,108,97,115,\n115,61,34,119,51,46,111,114,103,47,49,57,57,57,47,120,104,116,109,108,34,32,10,\n13,10,60,47,98,111,100,121,62,13,10,60,47,104,116,109,108,62,100,105,115,116,105\n,110,99,116,105,111,110,32,98,101,116,119,101,101,110,47,34,32,116,97,114,103,\n101,116,61,34,95,98,108,97,110,107,34,62,60,108,105,110,107,32,104,114,101,102,\n61,34,104,116,116,112,58,47,47,101,110,99,111,100,105,110,103,61,34,117,116,102,\n45,56,34,63,62,10,119,46,97,100,100,69,118,101,110,116,76,105,115,116,101,110,\n101,114,63,97,99,116,105,111,110,61,34,104,116,116,112,58,47,47,119,119,119,46,\n105,99,111,110,34,32,104,114,101,102,61,34,104,116,116,112,58,47,47,32,115,116,\n121,108,101,61,34,98,97,99,107,103,114,111,117,110,100,58,116,121,112,101,61,34,\n116,101,120,116,47,99,115,115,34,32,47,62,10,109,101,116,97,32,112,114,111,112,\n101,114,116,121,61,34,111,103,58,116,60,105,110,112,117,116,32,116,121,112,101,\n61,34,116,101,120,116,34,32,32,115,116,121,108,101,61,34,116,101,120,116,45,97,\n108,105,103,110,58,116,104,101,32,100,101,118,101,108,111,112,109,101,110,116,32\n,111,102,32,116,121,108,101,115,104,101,101,116,34,32,116,121,112,101,61,34,116,\n101,104,116,109,108,59,32,99,104,97,114,115,101,116,61,117,116,102,45,56,105,115\n,32,99,111,110,115,105,100,101,114,101,100,32,116,111,32,98,101,116,97,98,108,\n101,32,119,105,100,116,104,61,34,49,48,48,37,34,32,73,110,32,97,100,100,105,116,\n105,111,110,32,116,111,32,116,104,101,32,99,111,110,116,114,105,98,117,116,101,\n100,32,116,111,32,116,104,101,32,100,105,102,102,101,114,101,110,99,101,115,32,\n98,101,116,119,101,101,110,100,101,118,101,108,111,112,109,101,110,116,32,111,\n102,32,116,104,101,32,73,116,32,105,115,32,105,109,112,111,114,116,97,110,116,32\n,116,111,32,60,47,115,99,114,105,112,116,62,10,10,60,115,99,114,105,112,116,32,\n32,115,116,121,108,101,61,34,102,111,110,116,45,115,105,122,101,58,49,62,60,47,\n115,112,97,110,62,60,115,112,97,110,32,105,100,61,103,98,76,105,98,114,97,114,\n121,32,111,102,32,67,111,110,103,114,101,115,115,60,105,109,103,32,115,114,99,61\n,34,104,116,116,112,58,47,47,105,109,69,110,103,108,105,115,104,32,116,114,97,\n110,115,108,97,116,105,111,110,65,99,97,100,101,109,121,32,111,102,32,83,99,105,\n101,110,99,101,115,100,105,118,32,115,116,121,108,101,61,34,100,105,115,112,108,\n97,121,58,99,111,110,115,116,114,117,99,116,105,111,110,32,111,102,32,116,104,\n101,46,103,101,116,69,108,101,109,101,110,116,66,121,73,100,40,105,100,41,105,\n110,32,99,111,110,106,117,110,99,116,105,111,110,32,119,105,116,104,69,108,101,\n109,101,110,116,40,39,115,99,114,105,112,116,39,41,59,32,60,109,101,116,97,32,\n112,114,111,112,101,114,116,121,61,34,111,103,58,208,145,209,138,208,187,208,179\n,208,176,209,128,209,129,208,186,208,184,10,32,116,121,112,101,61,34,116,101,120\n,116,34,32,110,97,109,101,61,34,62,80,114,105,118,97,99,121,32,80,111,108,105,99\n,121,60,47,97,62,97,100,109,105,110,105,115,116,101,114,101,100,32,98,121,32,116\n,104,101,101,110,97,98,108,101,83,105,110,103,108,101,82,101,113,117,101,115,116\n,115,116,121,108,101,61,38,113,117,111,116,59,109,97,114,103,105,110,58,60,47,\n100,105,118,62,60,47,100,105,118,62,60,47,100,105,118,62,60,62,60,105,109,103,32\n,115,114,99,61,34,104,116,116,112,58,47,47,105,32,115,116,121,108,101,61,38,113,\n117,111,116,59,102,108,111,97,116,58,114,101,102,101,114,114,101,100,32,116,111,\n32,97,115,32,116,104,101,32,116,111,116,97,108,32,112,111,112,117,108,97,116,105\n,111,110,32,111,102,105,110,32,87,97,115,104,105,110,103,116,111,110,44,32,68,46\n,67,46,32,115,116,121,108,101,61,34,98,97,99,107,103,114,111,117,110,100,45,97,\n109,111,110,103,32,111,116,104,101,114,32,116,104,105,110,103,115,44,111,114,103\n,97,110,105,122,97,116,105,111,110,32,111,102,32,116,104,101,112,97,114,116,105,\n99,105,112,97,116,101,100,32,105,110,32,116,104,101,116,104,101,32,105,110,116,\n114,111,100,117,99,116,105,111,110,32,111,102,105,100,101,110,116,105,102,105,\n101,100,32,119,105,116,104,32,116,104,101,102,105,99,116,105,111,110,97,108,32,\n99,104,97,114,97,99,116,101,114,32,79,120,102,111,114,100,32,85,110,105,118,101,\n114,115,105,116,121,32,109,105,115,117,110,100,101,114,115,116,97,110,100,105,\n110,103,32,111,102,84,104,101,114,101,32,97,114,101,44,32,104,111,119,101,118,\n101,114,44,115,116,121,108,101,115,104,101,101,116,34,32,104,114,101,102,61,34,\n47,67,111,108,117,109,98,105,97,32,85,110,105,118,101,114,115,105,116,121,101,\n120,112,97,110,100,101,100,32,116,111,32,105,110,99,108,117,100,101,117,115,117,\n97,108,108,121,32,114,101,102,101,114,114,101,100,32,116,111,105,110,100,105,99,\n97,116,105,110,103,32,116,104,97,116,32,116,104,101,104,97,118,101,32,115,117,\n103,103,101,115,116,101,100,32,116,104,97,116,97,102,102,105,108,105,97,116,101,\n100,32,119,105,116,104,32,116,104,101,99,111,114,114,101,108,97,116,105,111,110,\n32,98,101,116,119,101,101,110,110,117,109,98,101,114,32,111,102,32,100,105,102,\n102,101,114,101,110,116,62,60,47,116,100,62,60,47,116,114,62,60,47,116,97,98,108\n,101,62,82,101,112,117,98,108,105,99,32,111,102,32,73,114,101,108,97,110,100,10,\n60,47,115,99,114,105,112,116,62,10,60,115,99,114,105,112,116,32,117,110,100,101,\n114,32,116,104,101,32,105,110,102,108,117,101,110,99,101,99,111,110,116,114,105,\n98,117,116,105,111,110,32,116,111,32,116,104,101,79,102,102,105,99,105,97,108,32\n,119,101,98,115,105,116,101,32,111,102,104,101,97,100,113,117,97,114,116,101,114\n,115,32,111,102,32,116,104,101,99,101,110,116,101,114,101,100,32,97,114,111,117,\n110,100,32,116,104,101,105,109,112,108,105,99,97,116,105,111,110,115,32,111,102,\n32,116,104,101,104,97,118,101,32,98,101,101,110,32,100,101,118,101,108,111,112,\n101,100,70,101,100,101,114,97,108,32,82,101,112,117,98,108,105,99,32,111,102,98,\n101,99,97,109,101,32,105,110,99,114,101,97,115,105,110,103,108,121,99,111,110,\n116,105,110,117,97,116,105,111,110,32,111,102,32,116,104,101,78,111,116,101,44,\n32,104,111,119,101,118,101,114,44,32,116,104,97,116,115,105,109,105,108,97,114,\n32,116,111,32,116,104,97,116,32,111,102,32,99,97,112,97,98,105,108,105,116,105,\n101,115,32,111,102,32,116,104,101,97,99,99,111,114,100,97,110,99,101,32,119,105,\n116,104,32,116,104,101,112,97,114,116,105,99,105,112,97,110,116,115,32,105,110,\n32,116,104,101,102,117,114,116,104,101,114,32,100,101,118,101,108,111,112,109,\n101,110,116,117,110,100,101,114,32,116,104,101,32,100,105,114,101,99,116,105,111\n,110,105,115,32,111,102,116,101,110,32,99,111,110,115,105,100,101,114,101,100,\n104,105,115,32,121,111,117,110,103,101,114,32,98,114,111,116,104,101,114,60,47,\n116,100,62,60,47,116,114,62,60,47,116,97,98,108,101,62,60,97,32,104,116,116,112,\n45,101,113,117,105,118,61,34,88,45,85,65,45,112,104,121,115,105,99,97,108,32,112\n,114,111,112,101,114,116,105,101,115,111,102,32,66,114,105,116,105,115,104,32,67\n,111,108,117,109,98,105,97,104,97,115,32,98,101,101,110,32,99,114,105,116,105,99\n,105,122,101,100,40,119,105,116,104,32,116,104,101,32,101,120,99,101,112,116,105\n,111,110,113,117,101,115,116,105,111,110,115,32,97,98,111,117,116,32,116,104,101\n,112,97,115,115,105,110,103,32,116,104,114,111,117,103,104,32,116,104,101,48,34,\n32,99,101,108,108,112,97,100,100,105,110,103,61,34,48,34,32,116,104,111,117,115,\n97,110,100,115,32,111,102,32,112,101,111,112,108,101,114,101,100,105,114,101,99,\n116,115,32,104,101,114,101,46,32,70,111,114,104,97,118,101,32,99,104,105,108,100\n,114,101,110,32,117,110,100,101,114,37,51,69,37,51,67,47,115,99,114,105,112,116,\n37,51,69,34,41,41,59,60,97,32,104,114,101,102,61,34,104,116,116,112,58,47,47,119\n,119,119,46,60,108,105,62,60,97,32,104,114,101,102,61,34,104,116,116,112,58,47,\n47,115,105,116,101,95,110,97,109,101,34,32,99,111,110,116,101,110,116,61,34,116,\n101,120,116,45,100,101,99,111,114,97,116,105,111,110,58,110,111,110,101,115,116,\n121,108,101,61,34,100,105,115,112,108,97,121,58,32,110,111,110,101,60,109,101,\n116,97,32,104,116,116,112,45,101,113,117,105,118,61,34,88,45,110,101,119,32,68,\n97,116,101,40,41,46,103,101,116,84,105,109,101,40,41,32,116,121,112,101,61,34,\n105,109,97,103,101,47,120,45,105,99,111,110,34,60,47,115,112,97,110,62,60,115,\n112,97,110,32,99,108,97,115,115,61,34,108,97,110,103,117,97,103,101,61,34,106,97\n,118,97,115,99,114,105,112,116,119,105,110,100,111,119,46,108,111,99,97,116,105,\n111,110,46,104,114,101,102,60,97,32,104,114,101,102,61,34,106,97,118,97,115,99,\n114,105,112,116,58,45,45,62,13,10,60,115,99,114,105,112,116,32,116,121,112,101,\n61,34,116,60,97,32,104,114,101,102,61,39,104,116,116,112,58,47,47,119,119,119,46\n,104,111,114,116,99,117,116,32,105,99,111,110,34,32,104,114,101,102,61,34,60,47,\n100,105,118,62,13,10,60,100,105,118,32,99,108,97,115,115,61,34,60,115,99,114,105\n,112,116,32,115,114,99,61,34,104,116,116,112,58,47,47,34,32,114,101,108,61,34,\n115,116,121,108,101,115,104,101,101,116,34,32,116,60,47,100,105,118,62,10,60,115\n,99,114,105,112,116,32,116,121,112,101,61,47,97,62,32,60,97,32,104,114,101,102,\n61,34,104,116,116,112,58,47,47,32,97,108,108,111,119,84,114,97,110,115,112,97,\n114,101,110,99,121,61,34,88,45,85,65,45,67,111,109,112,97,116,105,98,108,101,34,\n32,99,111,110,114,101,108,97,116,105,111,110,115,104,105,112,32,98,101,116,119,\n101,101,110,10,60,47,115,99,114,105,112,116,62,13,10,60,115,99,114,105,112,116,\n32,60,47,97,62,60,47,108,105,62,60,47,117,108,62,60,47,100,105,118,62,97,115,115\n,111,99,105,97,116,101,100,32,119,105,116,104,32,116,104,101,32,112,114,111,103,\n114,97,109,109,105,110,103,32,108,97,110,103,117,97,103,101,60,47,97,62,60,97,32\n,104,114,101,102,61,34,104,116,116,112,58,47,47,60,47,97,62,60,47,108,105,62,60,\n108,105,32,99,108,97,115,115,61,34,102,111,114,109,32,97,99,116,105,111,110,61,\n34,104,116,116,112,58,47,47,60,100,105,118,32,115,116,121,108,101,61,34,100,105,\n115,112,108,97,121,58,116,121,112,101,61,34,116,101,120,116,34,32,110,97,109,101\n,61,34,113,34,60,116,97,98,108,101,32,119,105,100,116,104,61,34,49,48,48,37,34,\n32,98,97,99,107,103,114,111,117,110,100,45,112,111,115,105,116,105,111,110,58,34\n,32,98,111,114,100,101,114,61,34,48,34,32,119,105,100,116,104,61,34,114,101,108,\n61,34,115,104,111,114,116,99,117,116,32,105,99,111,110,34,32,104,54,62,60,117,\n108,62,60,108,105,62,60,97,32,104,114,101,102,61,34,32,32,60,109,101,116,97,32,\n104,116,116,112,45,101,113,117,105,118,61,34,99,115,115,34,32,109,101,100,105,97\n,61,34,115,99,114,101,101,110,34,32,114,101,115,112,111,110,115,105,98,108,101,\n32,102,111,114,32,116,104,101,32,34,32,116,121,112,101,61,34,97,112,112,108,105,\n99,97,116,105,111,110,47,34,32,115,116,121,108,101,61,34,98,97,99,107,103,114,\n111,117,110,100,45,104,116,109,108,59,32,99,104,97,114,115,101,116,61,117,116,\n102,45,56,34,32,97,108,108,111,119,116,114,97,110,115,112,97,114,101,110,99,121,\n61,34,115,116,121,108,101,115,104,101,101,116,34,32,116,121,112,101,61,34,116,\n101,13,10,60,109,101,116,97,32,104,116,116,112,45,101,113,117,105,118,61,34,62,\n60,47,115,112,97,110,62,60,115,112,97,110,32,99,108,97,115,115,61,34,48,34,32,99\n,101,108,108,115,112,97,99,105,110,103,61,34,48,34,62,59,10,60,47,115,99,114,105\n,112,116,62,10,60,115,99,114,105,112,116,32,115,111,109,101,116,105,109,101,115,\n32,99,97,108,108,101,100,32,116,104,101,100,111,101,115,32,110,111,116,32,110,\n101,99,101,115,115,97,114,105,108,121,70,111,114,32,109,111,114,101,32,105,110,\n102,111,114,109,97,116,105,111,110,97,116,32,116,104,101,32,98,101,103,105,110,\n110,105,110,103,32,111,102,32,60,33,68,79,67,84,89,80,69,32,104,116,109,108,62,\n60,104,116,109,108,112,97,114,116,105,99,117,108,97,114,108,121,32,105,110,32,\n116,104,101,32,116,121,112,101,61,34,104,105,100,100,101,110,34,32,110,97,109,\n101,61,34,106,97,118,97,115,99,114,105,112,116,58,118,111,105,100,40,48,41,59,34\n,101,102,102,101,99,116,105,118,101,110,101,115,115,32,111,102,32,116,104,101,32\n,97,117,116,111,99,111,109,112,108,101,116,101,61,34,111,102,102,34,32,103,101,\n110,101,114,97,108,108,121,32,99,111,110,115,105,100,101,114,101,100,62,60,105,\n110,112,117,116,32,116,121,112,101,61,34,116,101,120,116,34,32,34,62,60,47,115,\n99,114,105,112,116,62,13,10,60,115,99,114,105,112,116,116,104,114,111,117,103,\n104,111,117,116,32,116,104,101,32,119,111,114,108,100,99,111,109,109,111,110,32,\n109,105,115,99,111,110,99,101,112,116,105,111,110,97,115,115,111,99,105,97,116,\n105,111,110,32,119,105,116,104,32,116,104,101,60,47,100,105,118,62,10,60,47,100,\n105,118,62,10,60,100,105,118,32,99,100,117,114,105,110,103,32,104,105,115,32,108\n,105,102,101,116,105,109,101,44,99,111,114,114,101,115,112,111,110,100,105,110,\n103,32,116,111,32,116,104,101,116,121,112,101,61,34,105,109,97,103,101,47,120,45\n,105,99,111,110,34,32,97,110,32,105,110,99,114,101,97,115,105,110,103,32,110,117\n,109,98,101,114,100,105,112,108,111,109,97,116,105,99,32,114,101,108,97,116,105,\n111,110,115,97,114,101,32,111,102,116,101,110,32,99,111,110,115,105,100,101,114,\n101,100,109,101,116,97,32,99,104,97,114,115,101,116,61,34,117,116,102,45,56,34,\n32,60,105,110,112,117,116,32,116,121,112,101,61,34,116,101,120,116,34,32,101,120\n,97,109,112,108,101,115,32,105,110,99,108,117,100,101,32,116,104,101,34,62,60,\n105,109,103,32,115,114,99,61,34,104,116,116,112,58,47,47,105,112,97,114,116,105,\n99,105,112,97,116,105,111,110,32,105,110,32,116,104,101,116,104,101,32,101,115,\n116,97,98,108,105,115,104,109,101,110,116,32,111,102,10,60,47,100,105,118,62,10,\n60,100,105,118,32,99,108,97,115,115,61,34,38,97,109,112,59,110,98,115,112,59,38,\n97,109,112,59,110,98,115,112,59,116,111,32,100,101,116,101,114,109,105,110,101,\n32,119,104,101,116,104,101,114,113,117,105,116,101,32,100,105,102,102,101,114,\n101,110,116,32,102,114,111,109,109,97,114,107,101,100,32,116,104,101,32,98,101,\n103,105,110,110,105,110,103,100,105,115,116,97,110,99,101,32,98,101,116,119,101,\n101,110,32,116,104,101,99,111,110,116,114,105,98,117,116,105,111,110,115,32,116,\n111,32,116,104,101,99,111,110,102,108,105,99,116,32,98,101,116,119,101,101,110,\n32,116,104,101,119,105,100,101,108,121,32,99,111,110,115,105,100,101,114,101,100\n,32,116,111,119,97,115,32,111,110,101,32,111,102,32,116,104,101,32,102,105,114,\n115,116,119,105,116,104,32,118,97,114,121,105,110,103,32,100,101,103,114,101,101\n,115,104,97,118,101,32,115,112,101,99,117,108,97,116,101,100,32,116,104,97,116,\n40,100,111,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,112,\n97,114,116,105,99,105,112,97,116,105,110,103,32,105,110,32,116,104,101,111,114,\n105,103,105,110,97,108,108,121,32,100,101,118,101,108,111,112,101,100,101,116,97\n,32,99,104,97,114,115,101,116,61,34,117,116,102,45,56,34,62,32,116,121,112,101,\n61,34,116,101,120,116,47,99,115,115,34,32,47,62,10,105,110,116,101,114,99,104,97\n,110,103,101,97,98,108,121,32,119,105,116,104,109,111,114,101,32,99,108,111,115,\n101,108,121,32,114,101,108,97,116,101,100,115,111,99,105,97,108,32,97,110,100,32\n,112,111,108,105,116,105,99,97,108,116,104,97,116,32,119,111,117,108,100,32,111,\n116,104,101,114,119,105,115,101,112,101,114,112,101,110,100,105,99,117,108,97,\n114,32,116,111,32,116,104,101,115,116,121,108,101,32,116,121,112,101,61,34,116,\n101,120,116,47,99,115,115,116,121,112,101,61,34,115,117,98,109,105,116,34,32,110\n,97,109,101,61,34,102,97,109,105,108,105,101,115,32,114,101,115,105,100,105,110,\n103,32,105,110,100,101,118,101,108,111,112,105,110,103,32,99,111,117,110,116,114\n,105,101,115,99,111,109,112,117,116,101,114,32,112,114,111,103,114,97,109,109,\n105,110,103,101,99,111,110,111,109,105,99,32,100,101,118,101,108,111,112,109,101\n,110,116,100,101,116,101,114,109,105,110,97,116,105,111,110,32,111,102,32,116,\n104,101,102,111,114,32,109,111,114,101,32,105,110,102,111,114,109,97,116,105,111\n,110,111,110,32,115,101,118,101,114,97,108,32,111,99,99,97,115,105,111,110,115,\n112,111,114,116,117,103,117,195,170,115,32,40,69,117,114,111,112,101,117,41,208,\n163,208,186,209,128,208,176,209,151,208,189,209,129,209,140,208,186,208,176,209,\n131,208,186,209,128,208,176,209,151,208,189,209,129,209,140,208,186,208,176,208,\n160,208,190,209,129,209,129,208,184,208,185,209,129,208,186,208,190,208,185,208,\n188,208,176,209,130,208,181,209,128,208,184,208,176,208,187,208,190,208,178,208,\n184,208,189,209,132,208,190,209,128,208,188,208,176,209,134,208,184,208,184,209,\n131,208,191,209,128,208,176,208,178,208,187,208,181,208,189,208,184,209,143,208,\n189,208,181,208,190,208,177,209,133,208,190,208,180,208,184,208,188,208,190,208,\n184,208,189,209,132,208,190,209,128,208,188,208,176,209,134,208,184,209,143,208,\n152,208,189,209,132,208,190,209,128,208,188,208,176,209,134,208,184,209,143,208,\n160,208,181,209,129,208,191,209,131,208,177,208,187,208,184,208,186,208,184,208,\n186,208,190,208,187,208,184,209,135,208,181,209,129,209,130,208,178,208,190,208,\n184,208,189,209,132,208,190,209,128,208,188,208,176,209,134,208,184,209,142,209,\n130,208,181,209,128,209,128,208,184,209,130,208,190,209,128,208,184,208,184,208,\n180,208,190,209,129,209,130,208,176,209,130,208,190,209,135,208,189,208,190,216,\n167,217,132,217,133,216,170,217,136,216,167,216,172,216,175,217,136,217,134,216,\n167,217,132,216,167,216,180,216,170,216,177,216,167,217,131,216,167,216,170,216,\n167,217,132,216,167,217,130,216,170,216,177,216,167,216,173,216,167,216,170,104,\n116,109,108,59,32,99,104,97,114,115,101,116,61,85,84,70,45,56,34,32,115,101,116,\n84,105,109,101,111,117,116,40,102,117,110,99,116,105,111,110,40,41,100,105,115,\n112,108,97,121,58,105,110,108,105,110,101,45,98,108,111,99,107,59,60,105,110,112\n,117,116,32,116,121,112,101,61,34,115,117,98,109,105,116,34,32,116,121,112,101,\n32,61,32,39,116,101,120,116,47,106,97,118,97,115,99,114,105,60,105,109,103,32,\n115,114,99,61,34,104,116,116,112,58,47,47,119,119,119,46,34,32,34,104,116,116,\n112,58,47,47,119,119,119,46,119,51,46,111,114,103,47,115,104,111,114,116,99,117,\n116,32,105,99,111,110,34,32,104,114,101,102,61,34,34,32,97,117,116,111,99,111,\n109,112,108,101,116,101,61,34,111,102,102,34,32,60,47,97,62,60,47,100,105,118,62\n,60,100,105,118,32,99,108,97,115,115,61,60,47,97,62,60,47,108,105,62,10,60,108,\n105,32,99,108,97,115,115,61,34,99,115,115,34,32,116,121,112,101,61,34,116,101,\n120,116,47,99,115,115,34,32,60,102,111,114,109,32,97,99,116,105,111,110,61,34,\n104,116,116,112,58,47,47,120,116,47,99,115,115,34,32,104,114,101,102,61,34,104,\n116,116,112,58,47,47,108,105,110,107,32,114,101,108,61,34,97,108,116,101,114,110\n,97,116,101,34,32,13,10,60,115,99,114,105,112,116,32,116,121,112,101,61,34,116,\n101,120,116,47,32,111,110,99,108,105,99,107,61,34,106,97,118,97,115,99,114,105,\n112,116,58,40,110,101,119,32,68,97,116,101,41,46,103,101,116,84,105,109,101,40,\n41,125,104,101,105,103,104,116,61,34,49,34,32,119,105,100,116,104,61,34,49,34,32\n,80,101,111,112,108,101,39,115,32,82,101,112,117,98,108,105,99,32,111,102,32,32,\n60,97,32,104,114,101,102,61,34,104,116,116,112,58,47,47,119,119,119,46,116,101,\n120,116,45,100,101,99,111,114,97,116,105,111,110,58,117,110,100,101,114,116,104,\n101,32,98,101,103,105,110,110,105,110,103,32,111,102,32,116,104,101,32,60,47,100\n,105,118,62,10,60,47,100,105,118,62,10,60,47,100,105,118,62,10,101,115,116,97,98\n,108,105,115,104,109,101,110,116,32,111,102,32,116,104,101,32,60,47,100,105,118,\n62,60,47,100,105,118,62,60,47,100,105,118,62,60,47,100,35,118,105,101,119,112,\n111,114,116,123,109,105,110,45,104,101,105,103,104,116,58,10,60,115,99,114,105,\n112,116,32,115,114,99,61,34,104,116,116,112,58,47,47,111,112,116,105,111,110,62,\n60,111,112,116,105,111,110,32,118,97,108,117,101,61,111,102,116,101,110,32,114,\n101,102,101,114,114,101,100,32,116,111,32,97,115,32,47,111,112,116,105,111,110,\n62,10,60,111,112,116,105,111,110,32,118,97,108,117,60,33,68,79,67,84,89,80,69,32\n,104,116,109,108,62,10,60,33,45,45,91,73,110,116,101,114,110,97,116,105,111,110,\n97,108,32,65,105,114,112,111,114,116,62,10,60,97,32,104,114,101,102,61,34,104,\n116,116,112,58,47,47,119,119,119,60,47,97,62,60,97,32,104,114,101,102,61,34,104,\n116,116,112,58,47,47,119,224,184,160,224,184,178,224,184,169,224,184,178,224,185\n,132,224,184,151,224,184,162,225,131,165,225,131,144,225,131,160,225,131,151,225\n,131,163,225,131,154,225,131,152,230,173,163,233,171,148,228,184,173,230,150,135\n,32,40,231,185,129,233,171,148,41,224,164,168,224,164,191,224,164,176,224,165,\n141,224,164,166,224,165,135,224,164,182,224,164,161,224,164,190,224,164,137,224,\n164,168,224,164,178,224,165,139,224,164,161,224,164,149,224,165,141,224,164,183,\n224,165,135,224,164,164,224,165,141,224,164,176,224,164,156,224,164,190,224,164,\n168,224,164,149,224,164,190,224,164,176,224,165,128,224,164,184,224,164,130,224,\n164,172,224,164,130,224,164,167,224,164,191,224,164,164,224,164,184,224,165,141,\n224,164,165,224,164,190,224,164,170,224,164,168,224,164,190,224,164,184,224,165,\n141,224,164,181,224,165,128,224,164,149,224,164,190,224,164,176,224,164,184,224,\n164,130,224,164,184,224,165,141,224,164,149,224,164,176,224,164,163,224,164,184,\n224,164,190,224,164,174,224,164,151,224,165,141,224,164,176,224,165,128,224,164,\n154,224,164,191,224,164,159,224,165,141,224,164,160,224,165,139,224,164,130,224,\n164,181,224,164,191,224,164,156,224,165,141,224,164,158,224,164,190,224,164,168,\n224,164,133,224,164,174,224,165,135,224,164,176,224,164,191,224,164,149,224,164,\n190,224,164,181,224,164,191,224,164,173,224,164,191,224,164,168,224,165,141,224,\n164,168,224,164,151,224,164,190,224,164,161,224,164,191,224,164,175,224,164,190,\n224,164,129,224,164,149,224,165,141,224,164,175,224,165,139,224,164,130,224,164,\n149,224,164,191,224,164,184,224,165,129,224,164,176,224,164,149,224,165,141,224,\n164,183,224,164,190,224,164,170,224,164,185,224,165,129,224,164,129,224,164,154,\n224,164,164,224,165,128,224,164,170,224,165,141,224,164,176,224,164,172,224,164,\n130,224,164,167,224,164,168,224,164,159,224,164,191,224,164,170,224,165,141,224,\n164,170,224,164,163,224,165,128,224,164,149,224,165,141,224,164,176,224,164,191,\n224,164,149,224,165,135,224,164,159,224,164,170,224,165,141,224,164,176,224,164,\n190,224,164,176,224,164,130,224,164,173,224,164,170,224,165,141,224,164,176,224,\n164,190,224,164,170,224,165,141,224,164,164,224,164,174,224,164,190,224,164,178,\n224,164,191,224,164,149,224,165,139,224,164,130,224,164,176,224,164,171,224,164,\n188,224,165,141,224,164,164,224,164,190,224,164,176,224,164,168,224,164,191,224,\n164,176,224,165,141,224,164,174,224,164,190,224,164,163,224,164,178,224,164,191,\n224,164,174,224,164,191,224,164,159,224,165,135,224,164,161,100,101,115,99,114,\n105,112,116,105,111,110,34,32,99,111,110,116,101,110,116,61,34,100,111,99,117,\n109,101,110,116,46,108,111,99,97,116,105,111,110,46,112,114,111,116,46,103,101,\n116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,40,60,33,68,79\n,67,84,89,80,69,32,104,116,109,108,62,10,60,104,116,109,108,32,60,109,101,116,97\n,32,99,104,97,114,115,101,116,61,34,117,116,102,45,56,34,62,58,117,114,108,34,32\n,99,111,110,116,101,110,116,61,34,104,116,116,112,58,47,47,46,99,115,115,34,32,\n114,101,108,61,34,115,116,121,108,101,115,104,101,101,116,34,115,116,121,108,101\n,32,116,121,112,101,61,34,116,101,120,116,47,99,115,115,34,62,116,121,112,101,61\n,34,116,101,120,116,47,99,115,115,34,32,104,114,101,102,61,34,119,51,46,111,114,\n103,47,49,57,57,57,47,120,104,116,109,108,34,32,120,109,108,116,121,112,101,61,\n34,116,101,120,116,47,106,97,118,97,115,99,114,105,112,116,34,32,109,101,116,104\n,111,100,61,34,103,101,116,34,32,97,99,116,105,111,110,61,34,108,105,110,107,32,\n114,101,108,61,34,115,116,121,108,101,115,104,101,101,116,34,32,32,61,32,100,111\n,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,116,121,112,\n101,61,34,105,109,97,103,101,47,120,45,105,99,111,110,34,32,47,62,99,101,108,108\n,112,97,100,100,105,110,103,61,34,48,34,32,99,101,108,108,115,112,46,99,115,115,\n34,32,116,121,112,101,61,34,116,101,120,116,47,99,115,115,34,32,60,47,97,62,60,\n47,108,105,62,60,108,105,62,60,97,32,104,114,101,102,61,34,34,32,119,105,100,116\n,104,61,34,49,34,32,104,101,105,103,104,116,61,34,49,34,34,62,60,97,32,104,114,\n101,102,61,34,104,116,116,112,58,47,47,119,119,119,46,115,116,121,108,101,61,34,\n100,105,115,112,108,97,121,58,110,111,110,101,59,34,62,97,108,116,101,114,110,97\n,116,101,34,32,116,121,112,101,61,34,97,112,112,108,105,45,47,47,87,51,67,47,47,\n68,84,68,32,88,72,84,77,76,32,49,46,48,32,101,108,108,115,112,97,99,105,110,103,\n61,34,48,34,32,99,101,108,108,112,97,100,32,116,121,112,101,61,34,104,105,100,\n100,101,110,34,32,118,97,108,117,101,61,34,47,97,62,38,110,98,115,112,59,60,115,\n112,97,110,32,114,111,108,101,61,34,115,10,60,105,110,112,117,116,32,116,121,112\n,101,61,34,104,105,100,100,101,110,34,32,108,97,110,103,117,97,103,101,61,34,74,\n97,118,97,83,99,114,105,112,116,34,32,32,100,111,99,117,109,101,110,116,46,103,\n101,116,69,108,101,109,101,110,116,115,66,103,61,34,48,34,32,99,101,108,108,115,\n112,97,99,105,110,103,61,34,48,34,32,121,112,101,61,34,116,101,120,116,47,99,115\n,115,34,32,109,101,100,105,97,61,34,116,121,112,101,61,39,116,101,120,116,47,106\n,97,118,97,115,99,114,105,112,116,39,119,105,116,104,32,116,104,101,32,101,120,\n99,101,112,116,105,111,110,32,111,102,32,121,112,101,61,34,116,101,120,116,47,99\n,115,115,34,32,114,101,108,61,34,115,116,32,104,101,105,103,104,116,61,34,49,34,\n32,119,105,100,116,104,61,34,49,34,32,61,39,43,101,110,99,111,100,101,85,82,73,\n67,111,109,112,111,110,101,110,116,40,60,108,105,110,107,32,114,101,108,61,34,97\n,108,116,101,114,110,97,116,101,34,32,10,98,111,100,121,44,32,116,114,44,32,105,\n110,112,117,116,44,32,116,101,120,116,109,101,116,97,32,110,97,109,101,61,34,114\n,111,98,111,116,115,34,32,99,111,110,109,101,116,104,111,100,61,34,112,111,115,\n116,34,32,97,99,116,105,111,110,61,34,62,10,60,97,32,104,114,101,102,61,34,104,\n116,116,112,58,47,47,119,119,119,46,99,115,115,34,32,114,101,108,61,34,115,116,\n121,108,101,115,104,101,101,116,34,32,60,47,100,105,118,62,60,47,100,105,118,62,\n60,100,105,118,32,99,108,97,115,115,108,97,110,103,117,97,103,101,61,34,106,97,\n118,97,115,99,114,105,112,116,34,62,97,114,105,97,45,104,105,100,100,101,110,61,\n34,116,114,117,101,34,62,194,183,60,114,105,112,116,34,32,116,121,112,101,61,34,\n116,101,120,116,47,106,97,118,97,115,108,61,48,59,125,41,40,41,59,10,40,102,117,\n110,99,116,105,111,110,40,41,123,98,97,99,107,103,114,111,117,110,100,45,105,109\n,97,103,101,58,32,117,114,108,40,47,97,62,60,47,108,105,62,60,108,105,62,60,97,\n32,104,114,101,102,61,34,104,9,9,60,108,105,62,60,97,32,104,114,101,102,61,34,\n104,116,116,112,58,47,47,97,116,111,114,34,32,97,114,105,97,45,104,105,100,100,\n101,110,61,34,116,114,117,62,32,60,97,32,104,114,101,102,61,34,104,116,116,112,\n58,47,47,119,119,119,46,108,97,110,103,117,97,103,101,61,34,106,97,118,97,115,99\n,114,105,112,116,34,32,47,111,112,116,105,111,110,62,10,60,111,112,116,105,111,\n110,32,118,97,108,117,101,47,100,105,118,62,60,47,100,105,118,62,60,100,105,118,\n32,99,108,97,115,115,61,114,97,116,111,114,34,32,97,114,105,97,45,104,105,100,\n100,101,110,61,34,116,114,101,61,40,110,101,119,32,68,97,116,101,41,46,103,101,\n116,84,105,109,101,40,41,112,111,114,116,117,103,117,195,170,115,32,40,100,111,\n32,66,114,97,115,105,108,41,208,190,209,128,208,179,208,176,208,189,208,184,208,\n183,208,176,209,134,208,184,208,184,208,178,208,190,208,183,208,188,208,190,208,\n182,208,189,208,190,209,129,209,130,209,140,208,190,208,177,209,128,208,176,208,\n183,208,190,208,178,208,176,208,189,208,184,209,143,209,128,208,181,208,179,208,\n184,209,129,209,130,209,128,208,176,209,134,208,184,208,184,208,178,208,190,208,\n183,208,188,208,190,208,182,208,189,208,190,209,129,209,130,208,184,208,190,208,\n177,209,143,208,183,208,176,209,130,208,181,208,187,209,140,208,189,208,176,60,\n33,68,79,67,84,89,80,69,32,104,116,109,108,32,80,85,66,76,73,67,32,34,110,116,45\n,84,121,112,101,34,32,99,111,110,116,101,110,116,61,34,116,101,120,116,47,60,109\n,101,116,97,32,104,116,116,112,45,101,113,117,105,118,61,34,67,111,110,116,101,\n114,97,110,115,105,116,105,111,110,97,108,47,47,69,78,34,32,34,104,116,116,112,\n58,60,104,116,109,108,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,119,\n119,119,45,47,47,87,51,67,47,47,68,84,68,32,88,72,84,77,76,32,49,46,48,32,84,68,\n84,68,47,120,104,116,109,108,49,45,116,114,97,110,115,105,116,105,111,110,97,108\n,47,47,119,119,119,46,119,51,46,111,114,103,47,84,82,47,120,104,116,109,108,49,\n47,112,101,32,61,32,39,116,101,120,116,47,106,97,118,97,115,99,114,105,112,116,\n39,59,60,109,101,116,97,32,110,97,109,101,61,34,100,101,115,99,114,105,112,116,\n105,111,110,112,97,114,101,110,116,78,111,100,101,46,105,110,115,101,114,116,66,\n101,102,111,114,101,60,105,110,112,117,116,32,116,121,112,101,61,34,104,105,100,\n100,101,110,34,32,110,97,106,115,34,32,116,121,112,101,61,34,116,101,120,116,47,\n106,97,118,97,115,99,114,105,40,100,111,99,117,109,101,110,116,41,46,114,101,97,\n100,121,40,102,117,110,99,116,105,115,99,114,105,112,116,32,116,121,112,101,61,\n34,116,101,120,116,47,106,97,118,97,115,105,109,97,103,101,34,32,99,111,110,116,\n101,110,116,61,34,104,116,116,112,58,47,47,85,65,45,67,111,109,112,97,116,105,98\n,108,101,34,32,99,111,110,116,101,110,116,61,116,109,108,59,32,99,104,97,114,115\n,101,116,61,117,116,102,45,56,34,32,47,62,10,108,105,110,107,32,114,101,108,61,\n34,115,104,111,114,116,99,117,116,32,105,99,111,110,60,108,105,110,107,32,114,\n101,108,61,34,115,116,121,108,101,115,104,101,101,116,34,32,60,47,115,99,114,105\n,112,116,62,10,60,115,99,114,105,112,116,32,116,121,112,101,61,61,32,100,111,99,\n117,109,101,110,116,46,99,114,101,97,116,101,69,108,101,109,101,110,60,97,32,116\n,97,114,103,101,116,61,34,95,98,108,97,110,107,34,32,104,114,101,102,61,32,100,\n111,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,115,66,105,\n110,112,117,116,32,116,121,112,101,61,34,116,101,120,116,34,32,110,97,109,101,61\n,97,46,116,121,112,101,32,61,32,39,116,101,120,116,47,106,97,118,97,115,99,114,\n105,110,112,117,116,32,116,121,112,101,61,34,104,105,100,100,101,110,34,32,110,\n97,109,101,104,116,109,108,59,32,99,104,97,114,115,101,116,61,117,116,102,45,56,\n34,32,47,62,100,116,100,34,62,10,60,104,116,109,108,32,120,109,108,110,115,61,34\n,104,116,116,112,45,47,47,87,51,67,47,47,68,84,68,32,72,84,77,76,32,52,46,48,49,\n32,84,101,110,116,115,66,121,84,97,103,78,97,109,101,40,39,115,99,114,105,112,\n116,39,41,105,110,112,117,116,32,116,121,112,101,61,34,104,105,100,100,101,110,\n34,32,110,97,109,60,115,99,114,105,112,116,32,116,121,112,101,61,34,116,101,120,\n116,47,106,97,118,97,115,34,32,115,116,121,108,101,61,34,100,105,115,112,108,97,\n121,58,110,111,110,101,59,34,62,100,111,99,117,109,101,110,116,46,103,101,116,69\n,108,101,109,101,110,116,66,121,73,100,40,61,100,111,99,117,109,101,110,116,46,\n99,114,101,97,116,101,69,108,101,109,101,110,116,40,39,32,116,121,112,101,61,39,\n116,101,120,116,47,106,97,118,97,115,99,114,105,112,116,39,105,110,112,117,116,\n32,116,121,112,101,61,34,116,101,120,116,34,32,110,97,109,101,61,34,100,46,103,\n101,116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,40,115,110\n,105,99,97,108,34,32,104,114,101,102,61,34,104,116,116,112,58,47,47,119,119,119,\n46,67,47,47,68,84,68,32,72,84,77,76,32,52,46,48,49,32,84,114,97,110,115,105,116,\n60,115,116,121,108,101,32,116,121,112,101,61,34,116,101,120,116,47,99,115,115,34\n,62,10,10,60,115,116,121,108,101,32,116,121,112,101,61,34,116,101,120,116,47,99,\n115,115,34,62,105,111,110,97,108,46,100,116,100,34,62,10,60,104,116,109,108,32,\n120,109,108,110,115,61,104,116,116,112,45,101,113,117,105,118,61,34,67,111,110,\n116,101,110,116,45,84,121,112,101,100,105,110,103,61,34,48,34,32,99,101,108,108,\n115,112,97,99,105,110,103,61,34,48,34,104,116,109,108,59,32,99,104,97,114,115,\n101,116,61,117,116,102,45,56,34,32,47,62,10,32,115,116,121,108,101,61,34,100,105\n,115,112,108,97,121,58,110,111,110,101,59,34,62,60,60,108,105,62,60,97,32,104,\n114,101,102,61,34,104,116,116,112,58,47,47,119,119,119,46,32,116,121,112,101,61,\n39,116,101,120,116,47,106,97,118,97,115,99,114,105,112,116,39,62,208,180,208,181\n,209,143,209,130,208,181,208,187,209,140,208,189,208,190,209,129,209,130,208,184\n,209,129,208,190,208,190,209,130,208,178,208,181,209,130,209,129,209,130,208,178\n,208,184,208,184,208,191,209,128,208,190,208,184,208,183,208,178,208,190,208,180\n,209,129,209,130,208,178,208,176,208,177,208,181,208,183,208,190,208,191,208,176\n,209,129,208,189,208,190,209,129,209,130,208,184,224,164,170,224,165,129,224,164\n,184,224,165,141,224,164,164,224,164,191,224,164,149,224,164,190,224,164,149,224\n,164,190,224,164,130,224,164,151,224,165,141,224,164,176,224,165,135,224,164,184\n,224,164,137,224,164,168,224,165,141,224,164,185,224,165,139,224,164,130,224,164\n,168,224,165,135,224,164,181,224,164,191,224,164,167,224,164,190,224,164,168,224\n,164,184,224,164,173,224,164,190,224,164,171,224,164,191,224,164,149,224,165,141\n,224,164,184,224,164,191,224,164,130,224,164,151,224,164,184,224,165,129,224,164\n,176,224,164,149,224,165,141,224,164,183,224,164,191,224,164,164,224,164,149,224\n,165,137,224,164,170,224,165,128,224,164,176,224,164,190,224,164,135,224,164,159\n,224,164,181,224,164,191,224,164,156,224,165,141,224,164,158,224,164,190,224,164\n,170,224,164,168,224,164,149,224,164,190,224,164,176,224,165,141,224,164,176,224\n,164,181,224,164,190,224,164,136,224,164,184,224,164,149,224,165,141,224,164,176\n,224,164,191,224,164,175,224,164,164,224,164,190\n};\n" }, { "path": "c/common/platform.c", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"platform.h\"\n\n/* Default brotli_alloc_func */\nvoid* BrotliDefaultAllocFunc(void* opaque, size_t size) {\n BROTLI_UNUSED(opaque);\n return malloc(size);\n}\n\n/* Default brotli_free_func */\nvoid BrotliDefaultFreeFunc(void* opaque, void* address) {\n BROTLI_UNUSED(opaque);\n free(address);\n}\n" }, { "path": "c/common/platform.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Macros for compiler / platform specific features and build options.\n\n Build options are:\n * BROTLI_BUILD_32_BIT disables 64-bit optimizations\n * BROTLI_BUILD_64_BIT forces to use 64-bit optimizations\n * BROTLI_BUILD_BIG_ENDIAN forces to use big-endian optimizations\n * BROTLI_BUILD_ENDIAN_NEUTRAL disables endian-aware optimizations\n * BROTLI_BUILD_LITTLE_ENDIAN forces to use little-endian optimizations\n * BROTLI_BUILD_NO_RBIT disables \"rbit\" optimization for ARM CPUs\n * BROTLI_BUILD_NO_UNALIGNED_READ_FAST forces off the fast-unaligned-read\n optimizations (mainly for testing purposes)\n * BROTLI_DEBUG dumps file name and line number when decoder detects stream\n or memory error\n * BROTLI_ENABLE_LOG enables asserts and dumps various state information\n * BROTLI_ENABLE_DUMP overrides default \"dump\" behaviour\n*/\n\n#ifndef BROTLI_COMMON_PLATFORM_H_\n#define BROTLI_COMMON_PLATFORM_H_\n\n#include /* IWYU pragma: export memcmp, memcpy, memset */\n#include /* IWYU pragma: export exit, free, malloc */\n#include /* should include endian.h for us */\n\n#include /* IWYU pragma: export */\n#include /* IWYU pragma: export */\n\n#if BROTLI_MSVC_VERSION_CHECK(18, 0, 0)\n#include \n#endif\n\n#if defined(BROTLI_ENABLE_LOG) || defined(BROTLI_DEBUG)\n#include \n#include \n#endif\n\n/* The following macros were borrowed from https://github.com/nemequ/hedley\n * with permission of original author - Evan Nemerson */\n\n/* >>> >>> >>> hedley macros */\n\n/* Define \"BROTLI_PREDICT_TRUE\" and \"BROTLI_PREDICT_FALSE\" macros for capable\n compilers.\n\nTo apply compiler hint, enclose the branching condition into macros, like this:\n\n if (BROTLI_PREDICT_TRUE(zero == 0)) {\n // main execution path\n } else {\n // compiler should place this code outside of main execution path\n }\n\nOR:\n\n if (BROTLI_PREDICT_FALSE(something_rare_or_unexpected_happens)) {\n // compiler should place this code outside of main execution path\n }\n\n*/\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_expect, 3, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_SUNPRO_VERSION_CHECK(5, 15, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \\\n BROTLI_TI_VERSION_CHECK(7, 3, 0) || \\\n BROTLI_TINYC_VERSION_CHECK(0, 9, 27)\n#define BROTLI_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))\n#define BROTLI_PREDICT_FALSE(x) (__builtin_expect(x, 0))\n#else\n#define BROTLI_PREDICT_FALSE(x) (x)\n#define BROTLI_PREDICT_TRUE(x) (x)\n#endif\n\n#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \\\n !defined(__cplusplus)\n#define BROTLI_RESTRICT restrict\n#elif BROTLI_GNUC_VERSION_CHECK(3, 1, 0) || \\\n BROTLI_MSVC_VERSION_CHECK(14, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \\\n BROTLI_PGI_VERSION_CHECK(17, 10, 0) || \\\n BROTLI_TI_VERSION_CHECK(8, 0, 0) || \\\n BROTLI_IAR_VERSION_CHECK(8, 0, 0) || \\\n (BROTLI_SUNPRO_VERSION_CHECK(5, 14, 0) && defined(__cplusplus))\n#define BROTLI_RESTRICT __restrict\n#elif BROTLI_SUNPRO_VERSION_CHECK(5, 3, 0) && !defined(__cplusplus)\n#define BROTLI_RESTRICT _Restrict\n#else\n#define BROTLI_RESTRICT\n#endif\n\n#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \\\n (defined(__cplusplus) && (__cplusplus >= 199711L))\n#define BROTLI_MAYBE_INLINE inline\n#elif defined(__GNUC_STDC_INLINE__) || defined(__GNUC_GNU_INLINE__) || \\\n BROTLI_ARM_VERSION_CHECK(6, 2, 0)\n#define BROTLI_MAYBE_INLINE __inline__\n#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || BROTLI_TI_VERSION_CHECK(8, 0, 0)\n#define BROTLI_MAYBE_INLINE __inline\n#else\n#define BROTLI_MAYBE_INLINE\n#endif\n\n#if BROTLI_GNUC_HAS_ATTRIBUTE(always_inline, 4, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \\\n BROTLI_TI_VERSION_CHECK(8, 0, 0) || \\\n (BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))\n#define BROTLI_INLINE BROTLI_MAYBE_INLINE __attribute__((__always_inline__))\n#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0)\n#define BROTLI_INLINE BROTLI_MAYBE_INLINE __forceinline\n#elif BROTLI_TI_VERSION_CHECK(7, 0, 0) && defined(__cplusplus)\n#define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma(\"FUNC_ALWAYS_INLINE;\")\n#elif BROTLI_IAR_VERSION_CHECK(8, 0, 0)\n#define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma(\"inline=forced\")\n#else\n#define BROTLI_INLINE BROTLI_MAYBE_INLINE\n#endif\n\n#if BROTLI_GNUC_HAS_ATTRIBUTE(noinline, 4, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \\\n BROTLI_TI_VERSION_CHECK(8, 0, 0) || \\\n (BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))\n#define BROTLI_NOINLINE __attribute__((__noinline__))\n#elif BROTLI_MSVC_VERSION_CHECK(13, 10, 0)\n#define BROTLI_NOINLINE __declspec(noinline)\n#elif BROTLI_PGI_VERSION_CHECK(10, 2, 0)\n#define BROTLI_NOINLINE _Pragma(\"noinline\")\n#elif BROTLI_TI_VERSION_CHECK(6, 0, 0) && defined(__cplusplus)\n#define BROTLI_NOINLINE _Pragma(\"FUNC_CANNOT_INLINE;\")\n#elif BROTLI_IAR_VERSION_CHECK(8, 0, 0)\n#define BROTLI_NOINLINE _Pragma(\"inline=never\")\n#else\n#define BROTLI_NOINLINE\n#endif\n\n/* <<< <<< <<< end of hedley macros. */\n\n#if BROTLI_GNUC_HAS_ATTRIBUTE(unused, 2, 7, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0)\n#define BROTLI_UNUSED_FUNCTION static BROTLI_INLINE __attribute__ ((unused))\n#else\n#define BROTLI_UNUSED_FUNCTION static BROTLI_INLINE\n#endif\n\n#if BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0)\n#define BROTLI_ALIGNED(N) __attribute__((aligned(N)))\n#else\n#define BROTLI_ALIGNED(N)\n#endif\n\n#if (defined(__ARM_ARCH) && (__ARM_ARCH == 7)) || \\\n (defined(M_ARM) && (M_ARM == 7))\n#define BROTLI_TARGET_ARMV7\n#endif /* ARMv7 */\n\n#if (defined(__ARM_ARCH) && (__ARM_ARCH == 8)) || \\\n defined(__aarch64__) || defined(__ARM64_ARCH_8__)\n#define BROTLI_TARGET_ARMV8_ANY\n\n#if defined(__ARM_32BIT_STATE)\n#define BROTLI_TARGET_ARMV8_32\n#elif defined(__ARM_64BIT_STATE)\n#define BROTLI_TARGET_ARMV8_64\n#endif\n\n#endif /* ARMv8 */\n\n#if defined(__ARM_NEON__) || defined(__ARM_NEON)\n#define BROTLI_TARGET_NEON\n#endif\n\n#if defined(__i386) || defined(_M_IX86)\n#define BROTLI_TARGET_X86\n#endif\n\n#if defined(__x86_64__) || defined(_M_X64)\n#define BROTLI_TARGET_X64\n#endif\n\n#if defined(__PPC64__)\n#define BROTLI_TARGET_POWERPC64\n#endif\n\n#if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64\n#define BROTLI_TARGET_RISCV64\n#endif\n\n#if defined(__loongarch_lp64)\n#define BROTLI_TARGET_LOONGARCH64\n#endif\n\n/* This does not seem to be an indicator of z/Architecture (64-bit); neither\n that allows to use unaligned loads. */\n#if defined(__s390x__)\n#define BROTLI_TARGET_S390X\n#endif\n\n#if defined(__mips64)\n#define BROTLI_TARGET_MIPS64\n#endif\n\n#if defined(__ia64__) || defined(_M_IA64)\n#define BROTLI_TARGET_IA64\n#endif\n\n#if defined(BROTLI_TARGET_X64) || defined(BROTLI_TARGET_ARMV8_64) || \\\n defined(BROTLI_TARGET_POWERPC64) || defined(BROTLI_TARGET_RISCV64) || \\\n defined(BROTLI_TARGET_LOONGARCH64) || defined(BROTLI_TARGET_MIPS64)\n#define BROTLI_TARGET_64_BITS 1\n#else\n#define BROTLI_TARGET_64_BITS 0\n#endif\n\n#if defined(BROTLI_BUILD_64_BIT)\n#define BROTLI_64_BITS 1\n#elif defined(BROTLI_BUILD_32_BIT)\n#define BROTLI_64_BITS 0\n#else\n#define BROTLI_64_BITS BROTLI_TARGET_64_BITS\n#endif\n\n#if (BROTLI_64_BITS)\n#define brotli_reg_t uint64_t\n#else\n#define brotli_reg_t uint32_t\n#endif\n\n#if defined(BROTLI_BUILD_BIG_ENDIAN)\n#define BROTLI_BIG_ENDIAN 1\n#elif defined(BROTLI_BUILD_LITTLE_ENDIAN)\n#define BROTLI_LITTLE_ENDIAN 1\n#elif defined(BROTLI_BUILD_ENDIAN_NEUTRAL)\n/* Just break elif chain. */\n#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)\n#define BROTLI_LITTLE_ENDIAN 1\n#elif defined(_WIN32) || defined(BROTLI_TARGET_X64)\n/* Win32 & x64 can currently always be assumed to be little endian */\n#define BROTLI_LITTLE_ENDIAN 1\n#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)\n#define BROTLI_BIG_ENDIAN 1\n/* Likely target platform is iOS / OSX. */\n#elif defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)\n#define BROTLI_LITTLE_ENDIAN 1\n#elif defined(BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN)\n#define BROTLI_BIG_ENDIAN 1\n#endif\n\n#if !defined(BROTLI_LITTLE_ENDIAN)\n#define BROTLI_LITTLE_ENDIAN 0\n#endif\n\n#if !defined(BROTLI_BIG_ENDIAN)\n#define BROTLI_BIG_ENDIAN 0\n#endif\n\n#if defined(BROTLI_BUILD_NO_UNALIGNED_READ_FAST)\n#define BROTLI_UNALIGNED_READ_FAST (!!0)\n#elif defined(BROTLI_TARGET_X86) || defined(BROTLI_TARGET_X64) || \\\n defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) || \\\n defined(BROTLI_TARGET_RISCV64) || defined(BROTLI_TARGET_LOONGARCH64)\n/* These targets are known to generate efficient code for unaligned reads\n * (e.g. a single instruction, not multiple 1-byte loads, shifted and or'd\n * together). */\n#define BROTLI_UNALIGNED_READ_FAST (!!1)\n#else\n#define BROTLI_UNALIGNED_READ_FAST (!!0)\n#endif\n\n/* Portable unaligned memory access: read / write values via memcpy. */\n#if !defined(BROTLI_USE_PACKED_FOR_UNALIGNED)\n#if defined(__mips__) && (!defined(__mips_isa_rev) || __mips_isa_rev < 6)\n#define BROTLI_USE_PACKED_FOR_UNALIGNED 1\n#else\n#define BROTLI_USE_PACKED_FOR_UNALIGNED 0\n#endif\n#endif /* defined(BROTLI_USE_PACKED_FOR_UNALIGNED) */\n\n#if BROTLI_USE_PACKED_FOR_UNALIGNED\n\ntypedef union BrotliPackedValue {\n uint16_t u16;\n uint32_t u32;\n uint64_t u64;\n size_t szt;\n} __attribute__ ((packed)) BrotliPackedValue;\n\nstatic BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) {\n const BrotliPackedValue* address = (const BrotliPackedValue*)p;\n return address->u16;\n}\nstatic BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) {\n const BrotliPackedValue* address = (const BrotliPackedValue*)p;\n return address->u32;\n}\nstatic BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {\n const BrotliPackedValue* address = (const BrotliPackedValue*)p;\n return address->u64;\n}\nstatic BROTLI_INLINE size_t BrotliUnalignedReadSizeT(const void* p) {\n const BrotliPackedValue* address = (const BrotliPackedValue*)p;\n return address->szt;\n}\nstatic BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {\n BrotliPackedValue* address = (BrotliPackedValue*)p;\n address->u64 = v;\n}\n\n#else /* not BROTLI_USE_PACKED_FOR_UNALIGNED */\n\nstatic BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) {\n uint16_t t;\n memcpy(&t, p, sizeof t);\n return t;\n}\nstatic BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) {\n uint32_t t;\n memcpy(&t, p, sizeof t);\n return t;\n}\nstatic BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {\n uint64_t t;\n memcpy(&t, p, sizeof t);\n return t;\n}\nstatic BROTLI_INLINE size_t BrotliUnalignedReadSizeT(const void* p) {\n size_t t;\n memcpy(&t, p, sizeof t);\n return t;\n}\nstatic BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {\n memcpy(p, &v, sizeof v);\n}\n\n#endif /* BROTLI_USE_PACKED_FOR_UNALIGNED */\n\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_bswap16, 4, 3, 0)\n#define BROTLI_BSWAP16(V) ((uint16_t)__builtin_bswap16(V))\n#else\n#define BROTLI_BSWAP16(V) ((uint16_t)( \\\n (((V) & 0xFFU) << 8) | \\\n (((V) >> 8) & 0xFFU)))\n#endif\n\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_bswap32, 4, 3, 0)\n#define BROTLI_BSWAP32(V) ((uint32_t)__builtin_bswap32(V))\n#else\n#define BROTLI_BSWAP32(V) ((uint32_t)( \\\n (((V) & 0xFFU) << 24) | (((V) & 0xFF00U) << 8) | \\\n (((V) >> 8) & 0xFF00U) | (((V) >> 24) & 0xFFU)))\n#endif\n\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_bswap64, 4, 3, 0)\n#define BROTLI_BSWAP64(V) ((uint64_t)__builtin_bswap64(V))\n#else\n#define BROTLI_BSWAP64(V) ((uint64_t)( \\\n (((V) & 0xFFU) << 56) | (((V) & 0xFF00U) << 40) | \\\n (((V) & 0xFF0000U) << 24) | (((V) & 0xFF000000U) << 8) | \\\n (((V) >> 8) & 0xFF000000U) | (((V) >> 24) & 0xFF0000U) | \\\n (((V) >> 40) & 0xFF00U) | (((V) >> 56) & 0xFFU)))\n#endif\n\n#if BROTLI_LITTLE_ENDIAN\n/* Straight endianness. Just read / write values. */\n#define BROTLI_UNALIGNED_LOAD16LE BrotliUnalignedRead16\n#define BROTLI_UNALIGNED_LOAD32LE BrotliUnalignedRead32\n#define BROTLI_UNALIGNED_LOAD64LE BrotliUnalignedRead64\n#define BROTLI_UNALIGNED_STORE64LE BrotliUnalignedWrite64\n#elif BROTLI_BIG_ENDIAN /* BROTLI_LITTLE_ENDIAN */\nstatic BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) {\n uint16_t value = BrotliUnalignedRead16(p);\n return BROTLI_BSWAP16(value);\n}\nstatic BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) {\n uint32_t value = BrotliUnalignedRead32(p);\n return BROTLI_BSWAP32(value);\n}\nstatic BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) {\n uint64_t value = BrotliUnalignedRead64(p);\n return BROTLI_BSWAP64(value);\n}\nstatic BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) {\n uint64_t value = BROTLI_BSWAP64(v);\n BrotliUnalignedWrite64(p, value);\n}\n#else /* BROTLI_LITTLE_ENDIAN */\n/* Read / store values byte-wise; hopefully compiler will understand. */\nstatic BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) {\n const uint8_t* in = (const uint8_t*)p;\n return (uint16_t)(in[0] | (in[1] << 8));\n}\nstatic BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) {\n const uint8_t* in = (const uint8_t*)p;\n uint32_t value = (uint32_t)(in[0]);\n value |= (uint32_t)(in[1]) << 8;\n value |= (uint32_t)(in[2]) << 16;\n value |= (uint32_t)(in[3]) << 24;\n return value;\n}\nstatic BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) {\n const uint8_t* in = (const uint8_t*)p;\n uint64_t value = (uint64_t)(in[0]);\n value |= (uint64_t)(in[1]) << 8;\n value |= (uint64_t)(in[2]) << 16;\n value |= (uint64_t)(in[3]) << 24;\n value |= (uint64_t)(in[4]) << 32;\n value |= (uint64_t)(in[5]) << 40;\n value |= (uint64_t)(in[6]) << 48;\n value |= (uint64_t)(in[7]) << 56;\n return value;\n}\nstatic BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) {\n uint8_t* out = (uint8_t*)p;\n out[0] = (uint8_t)v;\n out[1] = (uint8_t)(v >> 8);\n out[2] = (uint8_t)(v >> 16);\n out[3] = (uint8_t)(v >> 24);\n out[4] = (uint8_t)(v >> 32);\n out[5] = (uint8_t)(v >> 40);\n out[6] = (uint8_t)(v >> 48);\n out[7] = (uint8_t)(v >> 56);\n}\n#endif /* BROTLI_LITTLE_ENDIAN */\n\nstatic BROTLI_INLINE void* BROTLI_UNALIGNED_LOAD_PTR(const void* p) {\n void* v;\n memcpy(&v, p, sizeof(void*));\n return v;\n}\n\nstatic BROTLI_INLINE void BROTLI_UNALIGNED_STORE_PTR(void* p, const void* v) {\n memcpy(p, &v, sizeof(void*));\n}\n\n/* BROTLI_IS_CONSTANT macros returns true for compile-time constants. */\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_constant_p, 3, 0, 1) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0)\n#define BROTLI_IS_CONSTANT(x) (!!__builtin_constant_p(x))\n#else\n#define BROTLI_IS_CONSTANT(x) (!!0)\n#endif\n\n#if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY)\n#define BROTLI_HAS_UBFX (!!1)\n#else\n#define BROTLI_HAS_UBFX (!!0)\n#endif\n\n#if defined(BROTLI_ENABLE_LOG)\n#define BROTLI_LOG(x) printf x\n#else\n#define BROTLI_LOG(x)\n#endif\n\n#if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG)\n#define BROTLI_ENABLE_DUMP_DEFAULT 1\n#define BROTLI_DCHECK(x) assert(x)\n#else\n#define BROTLI_ENABLE_DUMP_DEFAULT 0\n#define BROTLI_DCHECK(x)\n#endif\n\n#if !defined(BROTLI_ENABLE_DUMP)\n#define BROTLI_ENABLE_DUMP BROTLI_ENABLE_DUMP_DEFAULT\n#endif\n\n#if BROTLI_ENABLE_DUMP\nstatic BROTLI_INLINE void BrotliDump(const char* f, int l, const char* fn) {\n fprintf(stderr, \"%s:%d (%s)\\n\", f, l, fn);\n fflush(stderr);\n}\n#define BROTLI_DUMP() BrotliDump(__FILE__, __LINE__, __FUNCTION__)\n#else\n#define BROTLI_DUMP() (void)(0)\n#endif\n\n/* BrotliRBit assumes brotli_reg_t fits native CPU register type. */\n#if (BROTLI_64_BITS == BROTLI_TARGET_64_BITS)\n/* TODO(eustas): add appropriate icc/sunpro/arm/ibm/ti checks. */\n#if (BROTLI_GNUC_VERSION_CHECK(3, 0, 0) || defined(__llvm__)) && \\\n !defined(BROTLI_BUILD_NO_RBIT)\n#if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY)\n/* TODO(eustas): detect ARMv6T2 and enable this code for it. */\nstatic BROTLI_INLINE brotli_reg_t BrotliRBit(brotli_reg_t input) {\n brotli_reg_t output;\n __asm__(\"rbit %0, %1\\n\" : \"=r\"(output) : \"r\"(input));\n return output;\n}\n#define BROTLI_RBIT(x) BrotliRBit(x)\n#endif /* armv7 / armv8 */\n#endif /* gcc || clang */\n#endif /* brotli_reg_t is native */\n#if !defined(BROTLI_RBIT)\nstatic BROTLI_INLINE void BrotliRBit(void) { /* Should break build if used. */ }\n#endif /* BROTLI_RBIT */\n\n#define BROTLI_REPEAT_4(X) {X; X; X; X;}\n#define BROTLI_REPEAT_5(X) {X; X; X; X; X;}\n#define BROTLI_REPEAT_6(X) {X; X; X; X; X; X;}\n\n#define BROTLI_UNUSED(X) (void)(X)\n\n#define BROTLI_MIN_MAX(T) \\\n static BROTLI_INLINE T brotli_min_ ## T (T a, T b) { return a < b ? a : b; } \\\n static BROTLI_INLINE T brotli_max_ ## T (T a, T b) { return a > b ? a : b; }\nBROTLI_MIN_MAX(double) BROTLI_MIN_MAX(float) BROTLI_MIN_MAX(int)\nBROTLI_MIN_MAX(size_t) BROTLI_MIN_MAX(uint32_t) BROTLI_MIN_MAX(uint8_t)\n#undef BROTLI_MIN_MAX\n#define BROTLI_MIN(T, A, B) (brotli_min_ ## T((A), (B)))\n#define BROTLI_MAX(T, A, B) (brotli_max_ ## T((A), (B)))\n\n#define BROTLI_SWAP(T, A, I, J) { \\\n T __brotli_swap_tmp = (A)[(I)]; \\\n (A)[(I)] = (A)[(J)]; \\\n (A)[(J)] = __brotli_swap_tmp; \\\n}\n\n#if BROTLI_64_BITS\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_ctzll, 3, 4, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0)\n#define BROTLI_TZCNT64 __builtin_ctzll\n#elif BROTLI_MSVC_VERSION_CHECK(18, 0, 0)\n#if defined(BROTLI_TARGET_X64) && !defined(_M_ARM64EC)\n#define BROTLI_TZCNT64 _tzcnt_u64\n#else /* BROTLI_TARGET_X64 */\nstatic BROTLI_INLINE uint32_t BrotliBsf64Msvc(uint64_t x) {\n uint32_t lsb;\n _BitScanForward64(&lsb, x);\n return lsb;\n}\n#define BROTLI_TZCNT64 BrotliBsf64Msvc\n#endif /* BROTLI_TARGET_X64 */\n#endif /* __builtin_ctzll */\n#endif /* BROTLI_64_BITS */\n\n#if BROTLI_GNUC_HAS_BUILTIN(__builtin_clz, 3, 4, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0)\n#define BROTLI_BSR32(x) (31u ^ (uint32_t)__builtin_clz(x))\n#elif BROTLI_MSVC_VERSION_CHECK(18, 0, 0)\nstatic BROTLI_INLINE uint32_t BrotliBsr32Msvc(uint32_t x) {\n unsigned long msb;\n _BitScanReverse(&msb, x);\n return (uint32_t)msb;\n}\n#define BROTLI_BSR32 BrotliBsr32Msvc\n#endif /* __builtin_clz */\n\n/* Default brotli_alloc_func */\nBROTLI_COMMON_API void* BrotliDefaultAllocFunc(void* opaque, size_t size);\n\n/* Default brotli_free_func */\nBROTLI_COMMON_API void BrotliDefaultFreeFunc(void* opaque, void* address);\n\n/* Circular logical rotates. */\nstatic BROTLI_INLINE uint16_t BrotliRotateRight16(uint16_t const value,\n size_t count) {\n count &= 0x0F; /* for fickle pattern recognition */\n return (value >> count) | (uint16_t)(value << ((0U - count) & 0x0F));\n}\nstatic BROTLI_INLINE uint32_t BrotliRotateRight32(uint32_t const value,\n size_t count) {\n count &= 0x1F; /* for fickle pattern recognition */\n return (value >> count) | (uint32_t)(value << ((0U - count) & 0x1F));\n}\nstatic BROTLI_INLINE uint64_t BrotliRotateRight64(uint64_t const value,\n size_t count) {\n count &= 0x3F; /* for fickle pattern recognition */\n return (value >> count) | (uint64_t)(value << ((0U - count) & 0x3F));\n}\n\nBROTLI_UNUSED_FUNCTION void BrotliSuppressUnusedFunctions(void) {\n BROTLI_UNUSED(&BrotliSuppressUnusedFunctions);\n BROTLI_UNUSED(&BrotliUnalignedRead16);\n BROTLI_UNUSED(&BrotliUnalignedRead32);\n BROTLI_UNUSED(&BrotliUnalignedRead64);\n BROTLI_UNUSED(&BrotliUnalignedReadSizeT);\n BROTLI_UNUSED(&BrotliUnalignedWrite64);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD16LE);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD32LE);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD64LE);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_STORE64LE);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD_PTR);\n BROTLI_UNUSED(&BROTLI_UNALIGNED_STORE_PTR);\n BROTLI_UNUSED(&BrotliRBit);\n BROTLI_UNUSED(&brotli_min_double);\n BROTLI_UNUSED(&brotli_max_double);\n BROTLI_UNUSED(&brotli_min_float);\n BROTLI_UNUSED(&brotli_max_float);\n BROTLI_UNUSED(&brotli_min_int);\n BROTLI_UNUSED(&brotli_max_int);\n BROTLI_UNUSED(&brotli_min_size_t);\n BROTLI_UNUSED(&brotli_max_size_t);\n BROTLI_UNUSED(&brotli_min_uint32_t);\n BROTLI_UNUSED(&brotli_max_uint32_t);\n BROTLI_UNUSED(&brotli_min_uint8_t);\n BROTLI_UNUSED(&brotli_max_uint8_t);\n BROTLI_UNUSED(&BrotliDefaultAllocFunc);\n BROTLI_UNUSED(&BrotliDefaultFreeFunc);\n BROTLI_UNUSED(&BrotliRotateRight16);\n BROTLI_UNUSED(&BrotliRotateRight32);\n BROTLI_UNUSED(&BrotliRotateRight64);\n#if BROTLI_ENABLE_DUMP\n BROTLI_UNUSED(&BrotliDump);\n#endif\n\n#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) && \\\n !defined(_M_ARM64EC)\n/* _mm_prefetch() is not defined outside of x86/x64 */\n/* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */\n#include \n#define PREFETCH_L1(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T0)\n#define PREFETCH_L2(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T1)\n#elif BROTLI_GNUC_HAS_BUILTIN(__builtin_prefetch, 3, 1, 0)\n#define PREFETCH_L1(ptr) \\\n __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */)\n#define PREFETCH_L2(ptr) \\\n __builtin_prefetch((ptr), 0 /* rw==read */, 2 /* locality */)\n#elif defined(__aarch64__)\n#define PREFETCH_L1(ptr) \\\n do { \\\n __asm__ __volatile__(\"prfm pldl1keep, %0\" ::\"Q\"(*(ptr))); \\\n } while (0)\n#define PREFETCH_L2(ptr) \\\n do { \\\n __asm__ __volatile__(\"prfm pldl2keep, %0\" ::\"Q\"(*(ptr))); \\\n } while (0)\n#else\n#define PREFETCH_L1(ptr) \\\n do { \\\n (void)(ptr); \\\n } while (0) /* disabled */\n#define PREFETCH_L2(ptr) \\\n do { \\\n (void)(ptr); \\\n } while (0) /* disabled */\n#endif\n\n/* The SIMD matchers are only faster at certain quality levels. */\n#if defined(_M_X64) && defined(BROTLI_TZCNT64)\n#define BROTLI_MAX_SIMD_QUALITY 7\n#elif defined(BROTLI_TZCNT64)\n#define BROTLI_MAX_SIMD_QUALITY 6\n#endif\n}\n\n#if defined(_MSC_VER)\n#define BROTLI_CRASH() __debugbreak(), (void)abort()\n#elif BROTLI_GNUC_HAS_BUILTIN(__builtin_trap, 3, 0, 0)\n#define BROTLI_CRASH() (void)__builtin_trap()\n#else\n#define BROTLI_CRASH() (void)abort()\n#endif\n\n/* Make BROTLI_TEST=0 act same as undefined. */\n#if defined(BROTLI_TEST) && ((1-BROTLI_TEST-1) == 0)\n#undef BROTLI_TEST\n#endif\n\n#if !defined(BROTLI_MODEL) && BROTLI_GNUC_HAS_ATTRIBUTE(model, 3, 0, 3) && \\\n !defined(BROTLI_TARGET_IA64) && !defined(BROTLI_TARGET_LOONGARCH64)\n#define BROTLI_MODEL(M) __attribute__((model(M)))\n#else\n#define BROTLI_MODEL(M) /* M */\n#endif\n\n#if !defined(BROTLI_COLD) && BROTLI_GNUC_HAS_ATTRIBUTE(cold, 4, 3, 0)\n#define BROTLI_COLD __attribute__((cold))\n#else\n#define BROTLI_COLD /* cold */\n#endif\n\n#endif /* BROTLI_COMMON_PLATFORM_H_ */\n" }, { "path": "c/common/shared_dictionary.c", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Shared Dictionary definition and utilities. */\n\n#include \n\n#include \"dictionary.h\"\n#include \"platform.h\"\n#include \"shared_dictionary_internal.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if defined(BROTLI_EXPERIMENTAL)\n\n#define BROTLI_NUM_ENCODED_LENGTHS (SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH \\\n - SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH + 1)\n\n/* Max allowed by spec */\n#define BROTLI_MAX_SIZE_BITS 15u\n\n/* Returns BROTLI_TRUE on success, BROTLI_FALSE on failure. */\nstatic BROTLI_BOOL ReadBool(const uint8_t* encoded, size_t size, size_t* pos,\n BROTLI_BOOL* result) {\n uint8_t value;\n size_t position = *pos;\n if (position >= size) return BROTLI_FALSE; /* past file end */\n value = encoded[position++];\n if (value > 1) return BROTLI_FALSE; /* invalid bool */\n *result = TO_BROTLI_BOOL(value);\n *pos = position;\n return BROTLI_TRUE; /* success */\n}\n\n/* Returns BROTLI_TRUE on success, BROTLI_FALSE on failure. */\nstatic BROTLI_BOOL ReadUint8(const uint8_t* encoded, size_t size, size_t* pos,\n uint8_t* result) {\n size_t position = *pos;\n if (position + sizeof(uint8_t) > size) return BROTLI_FALSE;\n *result = encoded[position++];\n *pos = position;\n return BROTLI_TRUE;\n}\n\n/* Returns BROTLI_TRUE on success, BROTLI_FALSE on failure. */\nstatic BROTLI_BOOL ReadUint16(const uint8_t* encoded, size_t size, size_t* pos,\n uint16_t* result) {\n size_t position = *pos;\n if (position + sizeof(uint16_t) > size) return BROTLI_FALSE;\n *result = BROTLI_UNALIGNED_LOAD16LE(&encoded[position]);\n position += 2;\n *pos = position;\n return BROTLI_TRUE;\n}\n\n/* Reads a varint into a uint32_t, and returns error if it's too large */\n/* Returns BROTLI_TRUE on success, BROTLI_FALSE on failure. */\nstatic BROTLI_BOOL ReadVarint32(const uint8_t* encoded, size_t size,\n size_t* pos, uint32_t* result) {\n int num = 0;\n uint8_t byte;\n *result = 0;\n for (;;) {\n if (*pos >= size) return BROTLI_FALSE;\n byte = encoded[(*pos)++];\n if (num == 4 && byte > 15) return BROTLI_FALSE;\n *result |= (uint32_t)(byte & 127) << (num * 7);\n if (byte < 128) return BROTLI_TRUE;\n num++;\n }\n}\n\n/* Returns the total length of word list. */\nstatic size_t BrotliSizeBitsToOffsets(const uint8_t* size_bits_by_length,\n uint32_t* offsets_by_length) {\n uint32_t pos = 0;\n uint32_t i;\n for (i = 0; i <= SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH; i++) {\n offsets_by_length[i] = pos;\n if (size_bits_by_length[i] != 0) {\n pos += i << size_bits_by_length[i];\n }\n }\n return pos;\n}\n\nstatic BROTLI_BOOL ParseWordList(size_t size, const uint8_t* encoded,\n size_t* pos, BrotliDictionary* out) {\n size_t offset;\n size_t i;\n size_t position = *pos;\n if (position + BROTLI_NUM_ENCODED_LENGTHS > size) {\n return BROTLI_FALSE;\n }\n\n memset(out->size_bits_by_length, 0, SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH);\n memcpy(out->size_bits_by_length + SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH,\n &encoded[position], BROTLI_NUM_ENCODED_LENGTHS);\n for (i = SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH;\n i <= SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH; i++) {\n if (out->size_bits_by_length[i] > BROTLI_MAX_SIZE_BITS) {\n return BROTLI_FALSE;\n }\n }\n position += BROTLI_NUM_ENCODED_LENGTHS;\n offset = BrotliSizeBitsToOffsets(\n out->size_bits_by_length, out->offsets_by_length);\n\n out->data = &encoded[position];\n out->data_size = offset;\n position += offset;\n if (position > size) return BROTLI_FALSE;\n *pos = position;\n return BROTLI_TRUE;\n}\n\n/* Computes the cutOffTransforms of a BrotliTransforms which already has the\n transforms data correctly filled in. */\nstatic void ComputeCutoffTransforms(BrotliTransforms* transforms) {\n uint32_t i;\n for (i = 0; i < BROTLI_TRANSFORMS_MAX_CUT_OFF + 1; i++) {\n transforms->cutOffTransforms[i] = -1;\n }\n for (i = 0; i < transforms->num_transforms; i++) {\n const uint8_t* prefix = BROTLI_TRANSFORM_PREFIX(transforms, i);\n uint8_t type = BROTLI_TRANSFORM_TYPE(transforms, i);\n const uint8_t* suffix = BROTLI_TRANSFORM_SUFFIX(transforms, i);\n if (type <= BROTLI_TRANSFORM_OMIT_LAST_9 && *prefix == 0 && *suffix == 0 &&\n transforms->cutOffTransforms[type] == -1) {\n transforms->cutOffTransforms[type] = (int16_t)i;\n }\n }\n}\n\nstatic BROTLI_BOOL ParsePrefixSuffixTable(size_t size, const uint8_t* encoded,\n size_t* pos, BrotliTransforms* out, uint16_t* out_table,\n size_t* out_table_size) {\n size_t position = *pos;\n size_t offset = 0;\n size_t stringlet_count = 0; /* NUM_PREFIX_SUFFIX */\n size_t data_length = 0;\n\n /* PREFIX_SUFFIX_LENGTH */\n if (!ReadUint16(encoded, size, &position, &out->prefix_suffix_size)) {\n return BROTLI_FALSE;\n }\n data_length = out->prefix_suffix_size;\n\n /* Must at least have space for null terminator. */\n if (data_length < 1) return BROTLI_FALSE;\n out->prefix_suffix = &encoded[position];\n if (position + data_length >= size) return BROTLI_FALSE;\n while (BROTLI_TRUE) {\n /* STRING_LENGTH */\n size_t stringlet_len = encoded[position + offset];\n out_table[stringlet_count] = (uint16_t)offset;\n stringlet_count++;\n offset++;\n if (stringlet_len == 0) {\n if (offset == data_length) {\n break;\n } else {\n return BROTLI_FALSE;\n }\n }\n if (stringlet_count > 255) return BROTLI_FALSE;\n offset += stringlet_len;\n if (offset >= data_length) return BROTLI_FALSE;\n }\n\n position += data_length;\n *pos = position;\n *out_table_size = (uint16_t)stringlet_count;\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL ParseTransformsList(size_t size, const uint8_t* encoded,\n size_t* pos, BrotliTransforms* out, uint16_t* prefix_suffix_table,\n size_t* prefix_suffix_count) {\n uint32_t i;\n BROTLI_BOOL has_params = BROTLI_FALSE;\n BROTLI_BOOL prefix_suffix_ok = BROTLI_FALSE;\n size_t position = *pos;\n size_t stringlet_cnt = 0;\n if (position >= size) return BROTLI_FALSE;\n\n prefix_suffix_ok = ParsePrefixSuffixTable(\n size, encoded, &position, out, prefix_suffix_table, &stringlet_cnt);\n if (!prefix_suffix_ok) return BROTLI_FALSE;\n out->prefix_suffix_map = prefix_suffix_table;\n *prefix_suffix_count = stringlet_cnt;\n\n out->num_transforms = encoded[position++];\n out->transforms = &encoded[position];\n position += (size_t)out->num_transforms * 3;\n if (position > size) return BROTLI_FALSE;\n /* Check for errors and read extra parameters. */\n for (i = 0; i < out->num_transforms; i++) {\n uint8_t prefix_id = BROTLI_TRANSFORM_PREFIX_ID(out, i);\n uint8_t type = BROTLI_TRANSFORM_TYPE(out, i);\n uint8_t suffix_id = BROTLI_TRANSFORM_SUFFIX_ID(out, i);\n if (prefix_id >= stringlet_cnt) return BROTLI_FALSE;\n if (type >= BROTLI_NUM_TRANSFORM_TYPES) return BROTLI_FALSE;\n if (suffix_id >= stringlet_cnt) return BROTLI_FALSE;\n if (type == BROTLI_TRANSFORM_SHIFT_FIRST ||\n type == BROTLI_TRANSFORM_SHIFT_ALL) {\n has_params = BROTLI_TRUE;\n }\n }\n if (has_params) {\n out->params = &encoded[position];\n position += (size_t)out->num_transforms * 2;\n if (position > size) return BROTLI_FALSE;\n for (i = 0; i < out->num_transforms; i++) {\n uint8_t type = BROTLI_TRANSFORM_TYPE(out, i);\n if (type != BROTLI_TRANSFORM_SHIFT_FIRST &&\n type != BROTLI_TRANSFORM_SHIFT_ALL) {\n if (out->params[i * 2] != 0 || out->params[i * 2 + 1] != 0) {\n return BROTLI_FALSE;\n }\n }\n }\n } else {\n out->params = NULL;\n }\n ComputeCutoffTransforms(out);\n *pos = position;\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL DryParseDictionary(const uint8_t* encoded,\n size_t size, uint32_t* num_prefix, BROTLI_BOOL* is_custom_static_dict) {\n size_t pos = 0;\n uint32_t chunk_size = 0;\n uint8_t num_word_lists;\n uint8_t num_transform_lists;\n *is_custom_static_dict = BROTLI_FALSE;\n *num_prefix = 0;\n\n /* Skip magic header bytes. */\n pos += 2;\n\n /* LZ77_DICTIONARY_LENGTH */\n if (!ReadVarint32(encoded, size, &pos, &chunk_size)) return BROTLI_FALSE;\n if (chunk_size != 0) {\n /* This limitation is not specified but the 32-bit Brotli decoder for now */\n if (chunk_size > 1073741823) return BROTLI_FALSE;\n *num_prefix = 1;\n if (pos + chunk_size > size) return BROTLI_FALSE;\n pos += chunk_size;\n }\n\n if (!ReadUint8(encoded, size, &pos, &num_word_lists)) {\n return BROTLI_FALSE;\n }\n if (!ReadUint8(encoded, size, &pos, &num_transform_lists)) {\n return BROTLI_FALSE;\n }\n\n if (num_word_lists > 0 || num_transform_lists > 0) {\n *is_custom_static_dict = BROTLI_TRUE;\n }\n\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL ParseDictionary(const uint8_t* encoded, size_t size,\n BrotliSharedDictionary* dict) {\n uint32_t i;\n size_t pos = 0;\n uint32_t chunk_size = 0;\n size_t total_prefix_suffix_count = 0;\n size_t transform_list_start[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n uint16_t temporary_prefix_suffix_table[256];\n\n /* Skip magic header bytes. */\n pos += 2;\n\n /* LZ77_DICTIONARY_LENGTH */\n if (!ReadVarint32(encoded, size, &pos, &chunk_size)) return BROTLI_FALSE;\n if (chunk_size != 0) {\n if (pos + chunk_size > size) return BROTLI_FALSE;\n dict->prefix_size[dict->num_prefix] = chunk_size;\n dict->prefix[dict->num_prefix] = &encoded[pos];\n dict->num_prefix++;\n /* LZ77_DICTIONARY_LENGTH bytes. */\n pos += chunk_size;\n }\n\n /* NUM_WORD_LISTS */\n if (!ReadUint8(encoded, size, &pos, &dict->num_word_lists)) {\n return BROTLI_FALSE;\n }\n if (dict->num_word_lists > SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS) {\n return BROTLI_FALSE;\n }\n\n if (dict->num_word_lists != 0) {\n dict->words_instances = (BrotliDictionary*)dict->alloc_func(\n dict->memory_manager_opaque,\n dict->num_word_lists * sizeof(*dict->words_instances));\n if (!dict->words_instances) return BROTLI_FALSE; /* OOM */\n }\n for (i = 0; i < dict->num_word_lists; i++) {\n if (!ParseWordList(size, encoded, &pos, &dict->words_instances[i])) {\n return BROTLI_FALSE;\n }\n }\n\n /* NUM_TRANSFORM_LISTS */\n if (!ReadUint8(encoded, size, &pos, &dict->num_transform_lists)) {\n return BROTLI_FALSE;\n }\n if (dict->num_transform_lists > SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS) {\n return BROTLI_FALSE;\n }\n\n if (dict->num_transform_lists != 0) {\n dict->transforms_instances = (BrotliTransforms*)dict->alloc_func(\n dict->memory_manager_opaque,\n dict->num_transform_lists * sizeof(*dict->transforms_instances));\n if (!dict->transforms_instances) return BROTLI_FALSE; /* OOM */\n }\n for (i = 0; i < dict->num_transform_lists; i++) {\n BROTLI_BOOL ok = BROTLI_FALSE;\n size_t prefix_suffix_count = 0;\n transform_list_start[i] = pos;\n dict->transforms_instances[i].prefix_suffix_map =\n temporary_prefix_suffix_table;\n ok = ParseTransformsList(\n size, encoded, &pos, &dict->transforms_instances[i],\n temporary_prefix_suffix_table, &prefix_suffix_count);\n if (!ok) return BROTLI_FALSE;\n total_prefix_suffix_count += prefix_suffix_count;\n }\n if (total_prefix_suffix_count != 0) {\n dict->prefix_suffix_maps = (uint16_t*)dict->alloc_func(\n dict->memory_manager_opaque,\n total_prefix_suffix_count * sizeof(*dict->prefix_suffix_maps));\n if (!dict->prefix_suffix_maps) return BROTLI_FALSE; /* OOM */\n }\n total_prefix_suffix_count = 0;\n for (i = 0; i < dict->num_transform_lists; i++) {\n size_t prefix_suffix_count = 0;\n size_t position = transform_list_start[i];\n uint16_t* prefix_suffix_map =\n &dict->prefix_suffix_maps[total_prefix_suffix_count];\n BROTLI_BOOL ok = ParsePrefixSuffixTable(\n size, encoded, &position, &dict->transforms_instances[i],\n prefix_suffix_map, &prefix_suffix_count);\n if (!ok) return BROTLI_FALSE;\n dict->transforms_instances[i].prefix_suffix_map = prefix_suffix_map;\n total_prefix_suffix_count += prefix_suffix_count;\n }\n\n if (dict->num_word_lists != 0 || dict->num_transform_lists != 0) {\n if (!ReadUint8(encoded, size, &pos, &dict->num_dictionaries)) {\n return BROTLI_FALSE;\n }\n if (dict->num_dictionaries == 0 ||\n dict->num_dictionaries > SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS) {\n return BROTLI_FALSE;\n }\n for (i = 0; i < dict->num_dictionaries; i++) {\n uint8_t words_index;\n uint8_t transforms_index;\n if (!ReadUint8(encoded, size, &pos, &words_index)) {\n return BROTLI_FALSE;\n }\n if (words_index > dict->num_word_lists) return BROTLI_FALSE;\n if (!ReadUint8(encoded, size, &pos, &transforms_index)) {\n return BROTLI_FALSE;\n }\n if (transforms_index > dict->num_transform_lists) return BROTLI_FALSE;\n dict->words[i] = words_index == dict->num_word_lists ?\n BrotliGetDictionary() : &dict->words_instances[words_index];\n dict->transforms[i] = transforms_index == dict->num_transform_lists ?\n BrotliGetTransforms(): &dict->transforms_instances[transforms_index];\n }\n /* CONTEXT_ENABLED */\n if (!ReadBool(encoded, size, &pos, &dict->context_based)) {\n return BROTLI_FALSE;\n }\n\n /* CONTEXT_MAP */\n if (dict->context_based) {\n for (i = 0; i < SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS; i++) {\n if (!ReadUint8(encoded, size, &pos, &dict->context_map[i])) {\n return BROTLI_FALSE;\n }\n if (dict->context_map[i] >= dict->num_dictionaries) {\n return BROTLI_FALSE;\n }\n }\n }\n } else {\n dict->context_based = BROTLI_FALSE;\n dict->num_dictionaries = 1;\n dict->words[0] = BrotliGetDictionary();\n dict->transforms[0] = BrotliGetTransforms();\n }\n\n return BROTLI_TRUE;\n}\n\n/* Decodes shared dictionary and verifies correctness.\n Returns BROTLI_TRUE if dictionary is valid, BROTLI_FALSE otherwise.\n The BrotliSharedDictionary must already have been initialized. If the\n BrotliSharedDictionary already contains data, compound dictionaries\n will be appended, but an error will be returned if it already has\n custom words or transforms.\n TODO(lode): link to RFC for shared brotli once published. */\nstatic BROTLI_BOOL DecodeSharedDictionary(\n const uint8_t* encoded, size_t size, BrotliSharedDictionary* dict) {\n uint32_t num_prefix = 0;\n BROTLI_BOOL is_custom_static_dict = BROTLI_FALSE;\n BROTLI_BOOL has_custom_static_dict =\n dict->num_word_lists > 0 || dict->num_transform_lists > 0;\n\n /* Check magic header bytes. */\n if (size < 2) return BROTLI_FALSE;\n if (encoded[0] != 0x91 || encoded[1] != 0) return BROTLI_FALSE;\n\n if (!DryParseDictionary(encoded, size, &num_prefix, &is_custom_static_dict)) {\n return BROTLI_FALSE;\n }\n\n if (num_prefix + dict->num_prefix > SHARED_BROTLI_MAX_COMPOUND_DICTS) {\n return BROTLI_FALSE;\n }\n\n /* Cannot combine different static dictionaries, only prefix dictionaries */\n if (has_custom_static_dict && is_custom_static_dict) return BROTLI_FALSE;\n\n return ParseDictionary(encoded, size, dict);\n}\n\n#endif /* BROTLI_EXPERIMENTAL */\n\nvoid BrotliSharedDictionaryDestroyInstance(\n BrotliSharedDictionary* dict) {\n if (!dict) {\n return;\n } else {\n brotli_free_func free_func = dict->free_func;\n void* opaque = dict->memory_manager_opaque;\n /* Cleanup. */\n free_func(opaque, dict->words_instances);\n free_func(opaque, dict->transforms_instances);\n free_func(opaque, dict->prefix_suffix_maps);\n /* Self-destruction. */\n free_func(opaque, dict);\n }\n}\n\nBROTLI_BOOL BrotliSharedDictionaryAttach(\n BrotliSharedDictionary* dict, BrotliSharedDictionaryType type,\n size_t data_size, const uint8_t data[BROTLI_ARRAY_PARAM(data_size)]) {\n if (!dict) {\n return BROTLI_FALSE;\n }\n#if defined(BROTLI_EXPERIMENTAL)\n if (type == BROTLI_SHARED_DICTIONARY_SERIALIZED) {\n return DecodeSharedDictionary(data, data_size, dict);\n }\n#endif /* BROTLI_EXPERIMENTAL */\n if (type == BROTLI_SHARED_DICTIONARY_RAW) {\n if (dict->num_prefix >= SHARED_BROTLI_MAX_COMPOUND_DICTS) {\n return BROTLI_FALSE;\n }\n dict->prefix_size[dict->num_prefix] = data_size;\n dict->prefix[dict->num_prefix] = data;\n dict->num_prefix++;\n return BROTLI_TRUE;\n }\n return BROTLI_FALSE;\n}\n\nBrotliSharedDictionary* BrotliSharedDictionaryCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n BrotliSharedDictionary* dict = 0;\n if (!alloc_func && !free_func) {\n dict = (BrotliSharedDictionary*)malloc(sizeof(BrotliSharedDictionary));\n } else if (alloc_func && free_func) {\n dict = (BrotliSharedDictionary*)alloc_func(\n opaque, sizeof(BrotliSharedDictionary));\n }\n if (dict == 0) {\n return 0;\n }\n\n /* TODO(eustas): explicitly initialize all the fields? */\n memset(dict, 0, sizeof(BrotliSharedDictionary));\n\n dict->context_based = BROTLI_FALSE;\n dict->num_dictionaries = 1;\n dict->num_word_lists = 0;\n dict->num_transform_lists = 0;\n\n dict->words[0] = BrotliGetDictionary();\n dict->transforms[0] = BrotliGetTransforms();\n\n dict->alloc_func = alloc_func ? alloc_func : BrotliDefaultAllocFunc;\n dict->free_func = free_func ? free_func : BrotliDefaultFreeFunc;\n dict->memory_manager_opaque = opaque;\n\n return dict;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/common/shared_dictionary_internal.h", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* (Transparent) Shared Dictionary definition. */\n\n#ifndef BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_\n#define BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_\n\n#include \n\n#include \"dictionary.h\"\n#include \"platform.h\"\n#include \"transform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstruct BrotliSharedDictionaryStruct {\n /* LZ77 prefixes (compound dictionary). */\n uint32_t num_prefix; /* max SHARED_BROTLI_MAX_COMPOUND_DICTS */\n size_t prefix_size[SHARED_BROTLI_MAX_COMPOUND_DICTS];\n const uint8_t* prefix[SHARED_BROTLI_MAX_COMPOUND_DICTS];\n\n /* If set, the context map is used to select word and transform list from 64\n contexts, if not set, the context map is not used and only words[0] and\n transforms[0] are to be used. */\n BROTLI_BOOL context_based;\n\n uint8_t context_map[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n\n /* Amount of word_list+transform_list combinations. */\n uint8_t num_dictionaries;\n\n /* Must use num_dictionaries values. */\n const BrotliDictionary* words[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n\n /* Must use num_dictionaries values. */\n const BrotliTransforms* transforms[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n\n /* Amount of custom word lists. May be 0 if only Brotli's built-in is used */\n uint8_t num_word_lists;\n\n /* Contents of the custom words lists. Must be NULL if num_word_lists is 0. */\n BrotliDictionary* words_instances;\n\n /* Amount of custom transform lists. May be 0 if only Brotli's built-in is\n used */\n uint8_t num_transform_lists;\n\n /* Contents of the custom transform lists. Must be NULL if num_transform_lists\n is 0. */\n BrotliTransforms* transforms_instances;\n\n /* Concatenated prefix_suffix_maps of the custom transform lists. Must be NULL\n if num_transform_lists is 0. */\n uint16_t* prefix_suffix_maps;\n\n /* Memory management */\n brotli_alloc_func alloc_func;\n brotli_free_func free_func;\n void* memory_manager_opaque;\n};\n\ntypedef struct BrotliSharedDictionaryStruct BrotliSharedDictionaryInternal;\n#define BrotliSharedDictionary BrotliSharedDictionaryInternal\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_ */\n" }, { "path": "c/common/static_init.h", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/*\n Central point for static initialization.\n\n In case of \"lazy\" mode `BrotliXxxLazyStaticInit` is not provided by the\n library. Embedder is responsible for providing it. This function should call\n `BrotliXxxLazyStaticInitInner` on the first invocation. This function should\n not return until execution of `BrotliXxxLazyStaticInitInner` is finished.\n In C or before C++11 it is possible to call `BrotliXxxLazyStaticInitInner`\n on start-up path and then `BrotliEncoderLazyStaticInit` is could be no-op;\n another option is to use available thread execution controls to meet the\n requirements. For possible C++11 implementation see static_init_lazy.cc.\n*/\n\n#ifndef THIRD_PARTY_BROTLI_COMMON_STATIC_INIT_H_\n#define THIRD_PARTY_BROTLI_COMMON_STATIC_INIT_H_\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Static data is \"initialized\" in compile time. */\n#define BROTLI_STATIC_INIT_NONE 0\n/* Static data is initialized before \"main\". */\n#define BROTLI_STATIC_INIT_EARLY 1\n/* Static data is initialized when first encoder is created. */\n#define BROTLI_STATIC_INIT_LAZY 2\n\n#define BROTLI_STATIC_INIT_DEFAULT BROTLI_STATIC_INIT_NONE\n\n#if !defined(BROTLI_STATIC_INIT)\n#define BROTLI_STATIC_INIT BROTLI_STATIC_INIT_DEFAULT\n#endif\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE) && \\\n (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_EARLY) && \\\n (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_LAZY)\n#error Invalid value for BROTLI_STATIC_INIT\n#endif\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_EARLY)\n#if defined(BROTLI_EXTERNAL_DICTIONARY_DATA)\n#error BROTLI_STATIC_INIT_EARLY will fail with BROTLI_EXTERNAL_DICTIONARY_DATA\n#endif\n#endif /* BROTLI_STATIC_INIT */\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif // THIRD_PARTY_BROTLI_COMMON_STATIC_INIT_H_\n" }, { "path": "c/common/transform.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"platform.h\"\n#include \"transform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* RFC 7932 transforms string data */\nstatic const BROTLI_MODEL(\"small\") char kPrefixSuffix[217] =\n \"\\1 \\2, \\10 of the \\4 of \\2s \\1.\\5 and \\4 \"\n/* 0x _0 _2 __5 _E _3 _6 _8 _E */\n \"in \\1\\\"\\4 to \\2\\\">\\1\\n\\2. \\1]\\5 for \\3 a \\6 \"\n/* 2x _3_ _5 _A_ _D_ _F _2 _4 _A _E */\n \"that \\1\\'\\6 with \\6 from \\4 by \\1(\\6. T\"\n/* 4x _5_ _7 _E _5 _A _C */\n \"he \\4 on \\4 as \\4 is \\4ing \\2\\n\\t\\1:\\3ed \"\n/* 6x _3 _8 _D _2 _7_ _ _A _C */\n \"\\2=\\\"\\4 at \\3ly \\1,\\2=\\'\\5.com/\\7. This \\5\"\n/* 8x _0 _ _3 _8 _C _E _ _1 _7 _F */\n \" not \\3er \\3al \\4ful \\4ive \\5less \\4es\"\n/* Ax _5 _9 _D _2 _7 _D */\n \"t \\4ize \\2\\xc2\\xa0\\4ous \\5 the \\2e \"; /* \\0 - implicit trailing zero. */\n/* Cx _2 _7___ ___ _A _F _5 _8 */\n\nstatic const BROTLI_MODEL(\"small\") uint16_t kPrefixSuffixMap[50] = {\n 0x00, 0x02, 0x05, 0x0E, 0x13, 0x16, 0x18, 0x1E, 0x23, 0x25,\n 0x2A, 0x2D, 0x2F, 0x32, 0x34, 0x3A, 0x3E, 0x45, 0x47, 0x4E,\n 0x55, 0x5A, 0x5C, 0x63, 0x68, 0x6D, 0x72, 0x77, 0x7A, 0x7C,\n 0x80, 0x83, 0x88, 0x8C, 0x8E, 0x91, 0x97, 0x9F, 0xA5, 0xA9,\n 0xAD, 0xB2, 0xB7, 0xBD, 0xC2, 0xC7, 0xCA, 0xCF, 0xD5, 0xD8\n};\n\n/* RFC 7932 transforms */\nstatic const BROTLI_MODEL(\"small\") uint8_t kTransformsData[] = {\n 49, BROTLI_TRANSFORM_IDENTITY, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 0,\n 0, BROTLI_TRANSFORM_IDENTITY, 0,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_1, 49,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 47,\n 0, BROTLI_TRANSFORM_IDENTITY, 49,\n 4, BROTLI_TRANSFORM_IDENTITY, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 3,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 6,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_2, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_1, 49,\n 1, BROTLI_TRANSFORM_IDENTITY, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 1,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 7,\n 49, BROTLI_TRANSFORM_IDENTITY, 9,\n 48, BROTLI_TRANSFORM_IDENTITY, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 8,\n 49, BROTLI_TRANSFORM_IDENTITY, 5,\n 49, BROTLI_TRANSFORM_IDENTITY, 10,\n 49, BROTLI_TRANSFORM_IDENTITY, 11,\n 49, BROTLI_TRANSFORM_OMIT_LAST_3, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 13,\n 49, BROTLI_TRANSFORM_IDENTITY, 14,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_3, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_2, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 15,\n 49, BROTLI_TRANSFORM_IDENTITY, 16,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 12,\n 5, BROTLI_TRANSFORM_IDENTITY, 49,\n 0, BROTLI_TRANSFORM_IDENTITY, 1,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_4, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 18,\n 49, BROTLI_TRANSFORM_IDENTITY, 17,\n 49, BROTLI_TRANSFORM_IDENTITY, 19,\n 49, BROTLI_TRANSFORM_IDENTITY, 20,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_5, 49,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_6, 49,\n 47, BROTLI_TRANSFORM_IDENTITY, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_4, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 22,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 23,\n 49, BROTLI_TRANSFORM_IDENTITY, 24,\n 49, BROTLI_TRANSFORM_IDENTITY, 25,\n 49, BROTLI_TRANSFORM_OMIT_LAST_7, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_1, 26,\n 49, BROTLI_TRANSFORM_IDENTITY, 27,\n 49, BROTLI_TRANSFORM_IDENTITY, 28,\n 0, BROTLI_TRANSFORM_IDENTITY, 12,\n 49, BROTLI_TRANSFORM_IDENTITY, 29,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_9, 49,\n 49, BROTLI_TRANSFORM_OMIT_FIRST_7, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_6, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 21,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 1,\n 49, BROTLI_TRANSFORM_OMIT_LAST_8, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 31,\n 49, BROTLI_TRANSFORM_IDENTITY, 32,\n 47, BROTLI_TRANSFORM_IDENTITY, 3,\n 49, BROTLI_TRANSFORM_OMIT_LAST_5, 49,\n 49, BROTLI_TRANSFORM_OMIT_LAST_9, 49,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 1,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 8,\n 5, BROTLI_TRANSFORM_IDENTITY, 21,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 0,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 10,\n 49, BROTLI_TRANSFORM_IDENTITY, 30,\n 0, BROTLI_TRANSFORM_IDENTITY, 5,\n 35, BROTLI_TRANSFORM_IDENTITY, 49,\n 47, BROTLI_TRANSFORM_IDENTITY, 2,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 17,\n 49, BROTLI_TRANSFORM_IDENTITY, 36,\n 49, BROTLI_TRANSFORM_IDENTITY, 33,\n 5, BROTLI_TRANSFORM_IDENTITY, 0,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 21,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 5,\n 49, BROTLI_TRANSFORM_IDENTITY, 37,\n 0, BROTLI_TRANSFORM_IDENTITY, 30,\n 49, BROTLI_TRANSFORM_IDENTITY, 38,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 0,\n 49, BROTLI_TRANSFORM_IDENTITY, 39,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 49,\n 49, BROTLI_TRANSFORM_IDENTITY, 34,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 8,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 12,\n 0, BROTLI_TRANSFORM_IDENTITY, 21,\n 49, BROTLI_TRANSFORM_IDENTITY, 40,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 12,\n 49, BROTLI_TRANSFORM_IDENTITY, 41,\n 49, BROTLI_TRANSFORM_IDENTITY, 42,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 17,\n 49, BROTLI_TRANSFORM_IDENTITY, 43,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 5,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 10,\n 0, BROTLI_TRANSFORM_IDENTITY, 34,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 33,\n 49, BROTLI_TRANSFORM_IDENTITY, 44,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 5,\n 45, BROTLI_TRANSFORM_IDENTITY, 49,\n 0, BROTLI_TRANSFORM_IDENTITY, 33,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 30,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 30,\n 49, BROTLI_TRANSFORM_IDENTITY, 46,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 1,\n 49, BROTLI_TRANSFORM_UPPERCASE_FIRST, 34,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 33,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 30,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 1,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 33,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 21,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 12,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 5,\n 49, BROTLI_TRANSFORM_UPPERCASE_ALL, 34,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 12,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 30,\n 0, BROTLI_TRANSFORM_UPPERCASE_ALL, 34,\n 0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 34,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nBrotliTransforms kBrotliTransforms = {\n sizeof(kPrefixSuffix),\n (const uint8_t*)kPrefixSuffix,\n kPrefixSuffixMap,\n sizeof(kTransformsData) / (3 * sizeof(kTransformsData[0])),\n kTransformsData,\n NULL, /* no extra parameters */\n {0, 12, 27, 23, 42, 63, 56, 48, 59, 64}\n};\n\nconst BrotliTransforms* BrotliGetTransforms(void) {\n return &kBrotliTransforms;\n}\n\nstatic int ToUpperCase(uint8_t* p) {\n if (p[0] < 0xC0) {\n if (p[0] >= 'a' && p[0] <= 'z') {\n p[0] ^= 32;\n }\n return 1;\n }\n /* An overly simplified uppercasing model for UTF-8. */\n if (p[0] < 0xE0) {\n p[1] ^= 32;\n return 2;\n }\n /* An arbitrary transform for three byte characters. */\n p[2] ^= 5;\n return 3;\n}\n\nstatic int Shift(uint8_t* word, int word_len, uint16_t parameter) {\n /* Limited sign extension: scalar < (1 << 24). */\n uint32_t scalar =\n (parameter & 0x7FFFu) + (0x1000000u - (parameter & 0x8000u));\n if (word[0] < 0x80) {\n /* 1-byte rune / 0sssssss / 7 bit scalar (ASCII). */\n scalar += (uint32_t)word[0];\n word[0] = (uint8_t)(scalar & 0x7Fu);\n return 1;\n } else if (word[0] < 0xC0) {\n /* Continuation / 10AAAAAA. */\n return 1;\n } else if (word[0] < 0xE0) {\n /* 2-byte rune / 110sssss AAssssss / 11 bit scalar. */\n if (word_len < 2) return 1;\n scalar += (uint32_t)((word[1] & 0x3Fu) | ((word[0] & 0x1Fu) << 6u));\n word[0] = (uint8_t)(0xC0 | ((scalar >> 6u) & 0x1F));\n word[1] = (uint8_t)((word[1] & 0xC0) | (scalar & 0x3F));\n return 2;\n } else if (word[0] < 0xF0) {\n /* 3-byte rune / 1110ssss AAssssss BBssssss / 16 bit scalar. */\n if (word_len < 3) return word_len;\n scalar += (uint32_t)((word[2] & 0x3Fu) | ((word[1] & 0x3Fu) << 6u) |\n ((word[0] & 0x0Fu) << 12u));\n word[0] = (uint8_t)(0xE0 | ((scalar >> 12u) & 0x0F));\n word[1] = (uint8_t)((word[1] & 0xC0) | ((scalar >> 6u) & 0x3F));\n word[2] = (uint8_t)((word[2] & 0xC0) | (scalar & 0x3F));\n return 3;\n } else if (word[0] < 0xF8) {\n /* 4-byte rune / 11110sss AAssssss BBssssss CCssssss / 21 bit scalar. */\n if (word_len < 4) return word_len;\n scalar += (uint32_t)((word[3] & 0x3Fu) | ((word[2] & 0x3Fu) << 6u) |\n ((word[1] & 0x3Fu) << 12u) | ((word[0] & 0x07u) << 18u));\n word[0] = (uint8_t)(0xF0 | ((scalar >> 18u) & 0x07));\n word[1] = (uint8_t)((word[1] & 0xC0) | ((scalar >> 12u) & 0x3F));\n word[2] = (uint8_t)((word[2] & 0xC0) | ((scalar >> 6u) & 0x3F));\n word[3] = (uint8_t)((word[3] & 0xC0) | (scalar & 0x3F));\n return 4;\n }\n return 1;\n}\n\nint BrotliTransformDictionaryWord(uint8_t* dst, const uint8_t* word, int len,\n const BrotliTransforms* transforms, int transform_idx) {\n int idx = 0;\n const uint8_t* prefix = BROTLI_TRANSFORM_PREFIX(transforms, transform_idx);\n uint8_t type = BROTLI_TRANSFORM_TYPE(transforms, transform_idx);\n const uint8_t* suffix = BROTLI_TRANSFORM_SUFFIX(transforms, transform_idx);\n {\n int prefix_len = *prefix++;\n while (prefix_len--) { dst[idx++] = *prefix++; }\n }\n {\n const int t = type;\n int i = 0;\n if (t <= BROTLI_TRANSFORM_OMIT_LAST_9) {\n len -= t;\n } else if (t >= BROTLI_TRANSFORM_OMIT_FIRST_1\n && t <= BROTLI_TRANSFORM_OMIT_FIRST_9) {\n int skip = t - (BROTLI_TRANSFORM_OMIT_FIRST_1 - 1);\n word += skip;\n len -= skip;\n }\n while (i < len) { dst[idx++] = word[i++]; }\n if (t == BROTLI_TRANSFORM_UPPERCASE_FIRST) {\n ToUpperCase(&dst[idx - len]);\n } else if (t == BROTLI_TRANSFORM_UPPERCASE_ALL) {\n uint8_t* uppercase = &dst[idx - len];\n while (len > 0) {\n int step = ToUpperCase(uppercase);\n uppercase += step;\n len -= step;\n }\n } else if (t == BROTLI_TRANSFORM_SHIFT_FIRST) {\n uint16_t param = (uint16_t)(transforms->params[transform_idx * 2]\n + (transforms->params[transform_idx * 2 + 1] << 8u));\n Shift(&dst[idx - len], len, param);\n } else if (t == BROTLI_TRANSFORM_SHIFT_ALL) {\n uint16_t param = (uint16_t)(transforms->params[transform_idx * 2]\n + (transforms->params[transform_idx * 2 + 1] << 8u));\n uint8_t* shift = &dst[idx - len];\n while (len > 0) {\n int step = Shift(shift, len, param);\n shift += step;\n len -= step;\n }\n }\n }\n {\n int suffix_len = *suffix++;\n while (suffix_len--) { dst[idx++] = *suffix++; }\n return idx;\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/common/transform.h", "content": "/* transforms is a part of ABI, but not API.\n\n It means that there are some functions that are supposed to be in \"common\"\n library, but header itself is not placed into include/brotli. This way,\n aforementioned functions will be available only to brotli internals.\n */\n\n#ifndef BROTLI_COMMON_TRANSFORM_H_\n#define BROTLI_COMMON_TRANSFORM_H_\n\n#include \"platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nenum BrotliWordTransformType {\n BROTLI_TRANSFORM_IDENTITY = 0,\n BROTLI_TRANSFORM_OMIT_LAST_1 = 1,\n BROTLI_TRANSFORM_OMIT_LAST_2 = 2,\n BROTLI_TRANSFORM_OMIT_LAST_3 = 3,\n BROTLI_TRANSFORM_OMIT_LAST_4 = 4,\n BROTLI_TRANSFORM_OMIT_LAST_5 = 5,\n BROTLI_TRANSFORM_OMIT_LAST_6 = 6,\n BROTLI_TRANSFORM_OMIT_LAST_7 = 7,\n BROTLI_TRANSFORM_OMIT_LAST_8 = 8,\n BROTLI_TRANSFORM_OMIT_LAST_9 = 9,\n BROTLI_TRANSFORM_UPPERCASE_FIRST = 10,\n BROTLI_TRANSFORM_UPPERCASE_ALL = 11,\n BROTLI_TRANSFORM_OMIT_FIRST_1 = 12,\n BROTLI_TRANSFORM_OMIT_FIRST_2 = 13,\n BROTLI_TRANSFORM_OMIT_FIRST_3 = 14,\n BROTLI_TRANSFORM_OMIT_FIRST_4 = 15,\n BROTLI_TRANSFORM_OMIT_FIRST_5 = 16,\n BROTLI_TRANSFORM_OMIT_FIRST_6 = 17,\n BROTLI_TRANSFORM_OMIT_FIRST_7 = 18,\n BROTLI_TRANSFORM_OMIT_FIRST_8 = 19,\n BROTLI_TRANSFORM_OMIT_FIRST_9 = 20,\n BROTLI_TRANSFORM_SHIFT_FIRST = 21,\n BROTLI_TRANSFORM_SHIFT_ALL = 22,\n BROTLI_NUM_TRANSFORM_TYPES /* Counts transforms, not a transform itself. */\n};\n\n#define BROTLI_TRANSFORMS_MAX_CUT_OFF BROTLI_TRANSFORM_OMIT_LAST_9\n\ntypedef struct BrotliTransforms {\n uint16_t prefix_suffix_size;\n /* Last character must be null, so prefix_suffix_size must be at least 1. */\n const uint8_t* prefix_suffix;\n const uint16_t* prefix_suffix_map;\n uint32_t num_transforms;\n /* Each entry is a [prefix_id, transform, suffix_id] triplet. */\n const uint8_t* transforms;\n /* Shift for BROTLI_TRANSFORM_SHIFT_FIRST and BROTLI_TRANSFORM_SHIFT_ALL,\n must be NULL if and only if no such transforms are present. */\n const uint8_t* params;\n /* Indices of transforms like [\"\", BROTLI_TRANSFORM_OMIT_LAST_#, \"\"].\n 0-th element corresponds to [\"\", BROTLI_TRANSFORM_IDENTITY, \"\"].\n -1, if cut-off transform does not exist. */\n int16_t cutOffTransforms[BROTLI_TRANSFORMS_MAX_CUT_OFF + 1];\n} BrotliTransforms;\n\n/* T is BrotliTransforms*; result is uint8_t. */\n#define BROTLI_TRANSFORM_PREFIX_ID(T, I) ((T)->transforms[((I) * 3) + 0])\n#define BROTLI_TRANSFORM_TYPE(T, I) ((T)->transforms[((I) * 3) + 1])\n#define BROTLI_TRANSFORM_SUFFIX_ID(T, I) ((T)->transforms[((I) * 3) + 2])\n\n/* T is BrotliTransforms*; result is const uint8_t*. */\n#define BROTLI_TRANSFORM_PREFIX(T, I) (&(T)->prefix_suffix[ \\\n (T)->prefix_suffix_map[BROTLI_TRANSFORM_PREFIX_ID(T, I)]])\n#define BROTLI_TRANSFORM_SUFFIX(T, I) (&(T)->prefix_suffix[ \\\n (T)->prefix_suffix_map[BROTLI_TRANSFORM_SUFFIX_ID(T, I)]])\n\nBROTLI_COMMON_API const BrotliTransforms* BrotliGetTransforms(void);\n\nBROTLI_COMMON_API int BrotliTransformDictionaryWord(\n uint8_t* dst, const uint8_t* word, int len,\n const BrotliTransforms* transforms, int transform_idx);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_COMMON_TRANSFORM_H_ */\n" }, { "path": "c/common/version.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Version definition. */\n\n#ifndef BROTLI_COMMON_VERSION_H_\n#define BROTLI_COMMON_VERSION_H_\n\n/* Compose 3 components into a single number. In a hexadecimal representation\n B and C components occupy exactly 3 digits. */\n#define BROTLI_MAKE_HEX_VERSION(A, B, C) ((A << 24) | (B << 12) | C)\n\n/* Those macros should only be used when library is compiled together with\n the client. If library is dynamically linked, use BrotliDecoderVersion and\n BrotliEncoderVersion methods. */\n\n#define BROTLI_VERSION_MAJOR 1\n#define BROTLI_VERSION_MINOR 2\n#define BROTLI_VERSION_PATCH 0\n\n#define BROTLI_VERSION BROTLI_MAKE_HEX_VERSION( \\\n BROTLI_VERSION_MAJOR, BROTLI_VERSION_MINOR, BROTLI_VERSION_PATCH)\n\n/* This macro is used by build system to produce Libtool-friendly soname. See\n https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html\n Version evolution rules:\n - interfaces added (or change is compatible) -> current+1:0:age+1\n - interfaces removed (or changed is incompatible) -> current+1:0:0\n - interfaces not changed -> current:revision+1:age\n */\n\n#define BROTLI_ABI_CURRENT 3\n#define BROTLI_ABI_REVISION 0\n#define BROTLI_ABI_AGE 2\n\n#if BROTLI_VERSION_MAJOR != (BROTLI_ABI_CURRENT - BROTLI_ABI_AGE)\n#error ABI/API version inconsistency\n#endif\n\n#if BROTLI_VERSION_MINOR != BROTLI_ABI_AGE\n#error ABI/API version inconsistency\n#endif\n\n#if BROTLI_VERSION_PATCH != BROTLI_ABI_REVISION\n#error ABI/API version inconsistency\n#endif\n\n#endif /* BROTLI_COMMON_VERSION_H_ */\n" }, { "path": "c/dec/bit_reader.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Bit reading helpers */\n\n#include \"bit_reader.h\"\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nconst BROTLI_MODEL(\"small\")\nbrotli_reg_t kBrotliBitMask[33] = { 0x00000000,\n 0x00000001, 0x00000003, 0x00000007, 0x0000000F,\n 0x0000001F, 0x0000003F, 0x0000007F, 0x000000FF,\n 0x000001FF, 0x000003FF, 0x000007FF, 0x00000FFF,\n 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF,\n 0x0001FFFF, 0x0003FFFF, 0x0007FFFF, 0x000FFFFF,\n 0x001FFFFF, 0x003FFFFF, 0x007FFFFF, 0x00FFFFFF,\n 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF,\n 0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF\n};\n\nvoid BrotliInitBitReader(BrotliBitReader* br) {\n br->val_ = 0;\n br->bit_pos_ = 0;\n}\n\nBROTLI_BOOL BrotliWarmupBitReader(BrotliBitReader* br) {\n size_t aligned_read_mask = (sizeof(br->val_) >> 1) - 1;\n /* Fixing alignment after unaligned BrotliFillWindow would result accumulator\n overflow. If unalignment is caused by BrotliSafeReadBits, then there is\n enough space in accumulator to fix alignment. */\n if (BROTLI_UNALIGNED_READ_FAST) {\n aligned_read_mask = 0;\n }\n if (BrotliGetAvailableBits(br) == 0) {\n br->val_ = 0;\n if (!BrotliPullByte(br)) {\n return BROTLI_FALSE;\n }\n }\n\n while ((((size_t)br->next_in) & aligned_read_mask) != 0) {\n if (!BrotliPullByte(br)) {\n /* If we consumed all the input, we don't care about the alignment. */\n return BROTLI_TRUE;\n }\n }\n return BROTLI_TRUE;\n}\n\nBROTLI_BOOL BrotliSafeReadBits32Slow(BrotliBitReader* br,\n brotli_reg_t n_bits, brotli_reg_t* val) {\n brotli_reg_t low_val;\n brotli_reg_t high_val;\n BrotliBitReaderState memento;\n BROTLI_DCHECK(n_bits <= 32);\n BROTLI_DCHECK(n_bits > 24);\n BrotliBitReaderSaveState(br, &memento);\n if (!BrotliSafeReadBits(br, 16, &low_val) ||\n !BrotliSafeReadBits(br, n_bits - 16, &high_val)) {\n BrotliBitReaderRestoreState(br, &memento);\n return BROTLI_FALSE;\n }\n *val = low_val | (high_val << 16);\n return BROTLI_TRUE;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/bit_reader.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Bit reading helpers */\n\n#ifndef BROTLI_DEC_BIT_READER_H_\n#define BROTLI_DEC_BIT_READER_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_SHORT_FILL_BIT_WINDOW_READ (sizeof(brotli_reg_t) >> 1)\n\n/* 162 bits + 7 bytes */\n#define BROTLI_FAST_INPUT_SLACK 28\n\nBROTLI_INTERNAL extern const brotli_reg_t kBrotliBitMask[33];\n\nstatic BROTLI_INLINE brotli_reg_t BitMask(brotli_reg_t n) {\n if (BROTLI_IS_CONSTANT(n) || BROTLI_HAS_UBFX) {\n /* Masking with this expression turns to a single\n \"Unsigned Bit Field Extract\" UBFX instruction on ARM. */\n return ~(~((brotli_reg_t)0) << n);\n } else {\n return kBrotliBitMask[n];\n }\n}\n\ntypedef struct {\n brotli_reg_t val_; /* pre-fetched bits */\n brotli_reg_t bit_pos_; /* current bit-reading position in val_ */\n const uint8_t* next_in; /* the byte we're reading from */\n const uint8_t* guard_in; /* position from which \"fast-path\" is prohibited */\n const uint8_t* last_in; /* == next_in + avail_in */\n} BrotliBitReader;\n\ntypedef struct {\n brotli_reg_t val_;\n brotli_reg_t bit_pos_;\n const uint8_t* next_in;\n size_t avail_in;\n} BrotliBitReaderState;\n\n/* Initializes the BrotliBitReader fields. */\nBROTLI_INTERNAL void BrotliInitBitReader(BrotliBitReader* br);\n\n/* Ensures that accumulator is not empty.\n May consume up to sizeof(brotli_reg_t) - 1 bytes of input.\n Returns BROTLI_FALSE if data is required but there is no input available.\n For !BROTLI_UNALIGNED_READ_FAST this function also prepares bit reader for\n aligned reading. */\nBROTLI_INTERNAL BROTLI_BOOL BrotliWarmupBitReader(BrotliBitReader* br);\n\n/* Fallback for BrotliSafeReadBits32. Extracted as noninlined method to unburden\n the main code-path. Never called for RFC brotli streams, required only for\n \"large-window\" mode and other extensions. */\nBROTLI_INTERNAL BROTLI_NOINLINE BROTLI_BOOL BrotliSafeReadBits32Slow(\n BrotliBitReader* br, brotli_reg_t n_bits, brotli_reg_t* val);\n\nstatic BROTLI_INLINE size_t\nBrotliBitReaderGetAvailIn(BrotliBitReader* const br) {\n return (size_t)(br->last_in - br->next_in);\n}\n\nstatic BROTLI_INLINE void BrotliBitReaderSaveState(\n BrotliBitReader* const from, BrotliBitReaderState* to) {\n to->val_ = from->val_;\n to->bit_pos_ = from->bit_pos_;\n to->next_in = from->next_in;\n to->avail_in = BrotliBitReaderGetAvailIn(from);\n}\n\nstatic BROTLI_INLINE void BrotliBitReaderSetInput(\n BrotliBitReader* const br, const uint8_t* next_in, size_t avail_in) {\n br->next_in = next_in;\n br->last_in = (avail_in == 0) ? next_in : (next_in + avail_in);\n if (avail_in + 1 > BROTLI_FAST_INPUT_SLACK) {\n br->guard_in = next_in + (avail_in + 1 - BROTLI_FAST_INPUT_SLACK);\n } else {\n br->guard_in = next_in;\n }\n}\n\nstatic BROTLI_INLINE void BrotliBitReaderRestoreState(\n BrotliBitReader* const to, BrotliBitReaderState* from) {\n to->val_ = from->val_;\n to->bit_pos_ = from->bit_pos_;\n to->next_in = from->next_in;\n BrotliBitReaderSetInput(to, from->next_in, from->avail_in);\n}\n\nstatic BROTLI_INLINE brotli_reg_t BrotliGetAvailableBits(\n const BrotliBitReader* br) {\n return br->bit_pos_;\n}\n\n/* Returns amount of unread bytes the bit reader still has buffered from the\n BrotliInput, including whole bytes in br->val_. Result is capped with\n maximal ring-buffer size (larger number won't be utilized anyway). */\nstatic BROTLI_INLINE size_t BrotliGetRemainingBytes(BrotliBitReader* br) {\n static const size_t kCap = (size_t)1 << BROTLI_LARGE_MAX_WBITS;\n size_t avail_in = BrotliBitReaderGetAvailIn(br);\n if (avail_in > kCap) return kCap;\n return avail_in + (BrotliGetAvailableBits(br) >> 3);\n}\n\n/* Checks if there is at least |num| bytes left in the input ring-buffer\n (excluding the bits remaining in br->val_). */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliCheckInputAmount(\n BrotliBitReader* const br) {\n return TO_BROTLI_BOOL(br->next_in < br->guard_in);\n}\n\n/* Load more bits into accumulator. */\nstatic BROTLI_INLINE brotli_reg_t BrotliBitReaderLoadBits(brotli_reg_t val,\n brotli_reg_t new_bits,\n brotli_reg_t count,\n brotli_reg_t offset) {\n BROTLI_DCHECK(\n !((val >> offset) & ~new_bits & ~(~((brotli_reg_t)0) << count)));\n (void)count;\n return val | (new_bits << offset);\n}\n\n/* Guarantees that there are at least |n_bits| + 1 bits in accumulator.\n Precondition: accumulator contains at least 1 bit.\n |n_bits| should be in the range [1..24] for regular build. For portable\n non-64-bit little-endian build only 16 bits are safe to request. */\nstatic BROTLI_INLINE void BrotliFillBitWindow(\n BrotliBitReader* const br, brotli_reg_t n_bits) {\n#if (BROTLI_64_BITS)\n if (BROTLI_UNALIGNED_READ_FAST && BROTLI_IS_CONSTANT(n_bits) &&\n (n_bits <= 8)) {\n brotli_reg_t bit_pos = br->bit_pos_;\n if (bit_pos <= 8) {\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n BROTLI_UNALIGNED_LOAD64LE(br->next_in), 56, bit_pos);\n br->bit_pos_ = bit_pos + 56;\n br->next_in += 7;\n }\n } else if (BROTLI_UNALIGNED_READ_FAST && BROTLI_IS_CONSTANT(n_bits) &&\n (n_bits <= 16)) {\n brotli_reg_t bit_pos = br->bit_pos_;\n if (bit_pos <= 16) {\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n BROTLI_UNALIGNED_LOAD64LE(br->next_in), 48, bit_pos);\n br->bit_pos_ = bit_pos + 48;\n br->next_in += 6;\n }\n } else {\n brotli_reg_t bit_pos = br->bit_pos_;\n if (bit_pos <= 32) {\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n (uint64_t)BROTLI_UNALIGNED_LOAD32LE(br->next_in), 32, bit_pos);\n br->bit_pos_ = bit_pos + 32;\n br->next_in += BROTLI_SHORT_FILL_BIT_WINDOW_READ;\n }\n }\n#else\n if (BROTLI_UNALIGNED_READ_FAST && BROTLI_IS_CONSTANT(n_bits) &&\n (n_bits <= 8)) {\n brotli_reg_t bit_pos = br->bit_pos_;\n if (bit_pos <= 8) {\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n BROTLI_UNALIGNED_LOAD32LE(br->next_in), 24, bit_pos);\n br->bit_pos_ = bit_pos + 24;\n br->next_in += 3;\n }\n } else {\n brotli_reg_t bit_pos = br->bit_pos_;\n if (bit_pos <= 16) {\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n (uint32_t)BROTLI_UNALIGNED_LOAD16LE(br->next_in), 16, bit_pos);\n br->bit_pos_ = bit_pos + 16;\n br->next_in += BROTLI_SHORT_FILL_BIT_WINDOW_READ;\n }\n }\n#endif\n}\n\n/* Mostly like BrotliFillBitWindow, but guarantees only 16 bits and reads no\n more than BROTLI_SHORT_FILL_BIT_WINDOW_READ bytes of input. */\nstatic BROTLI_INLINE void BrotliFillBitWindow16(BrotliBitReader* const br) {\n BrotliFillBitWindow(br, 17);\n}\n\n/* Tries to pull one byte of input to accumulator.\n Returns BROTLI_FALSE if there is no input available. */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliPullByte(BrotliBitReader* const br) {\n if (br->next_in == br->last_in) {\n return BROTLI_FALSE;\n }\n br->val_ = BrotliBitReaderLoadBits(br->val_,\n (brotli_reg_t)*br->next_in, 8, br->bit_pos_);\n br->bit_pos_ += 8;\n ++br->next_in;\n return BROTLI_TRUE;\n}\n\n/* Returns currently available bits.\n The number of valid bits could be calculated by BrotliGetAvailableBits. */\nstatic BROTLI_INLINE brotli_reg_t BrotliGetBitsUnmasked(\n BrotliBitReader* const br) {\n return br->val_;\n}\n\n/* Like BrotliGetBits, but does not mask the result.\n The result contains at least 16 valid bits. */\nstatic BROTLI_INLINE brotli_reg_t BrotliGet16BitsUnmasked(\n BrotliBitReader* const br) {\n BrotliFillBitWindow(br, 16);\n return (brotli_reg_t)BrotliGetBitsUnmasked(br);\n}\n\n/* Returns the specified number of bits from |br| without advancing bit\n position. */\nstatic BROTLI_INLINE brotli_reg_t BrotliGetBits(\n BrotliBitReader* const br, brotli_reg_t n_bits) {\n BrotliFillBitWindow(br, n_bits);\n return BrotliGetBitsUnmasked(br) & BitMask(n_bits);\n}\n\n/* Tries to peek the specified amount of bits. Returns BROTLI_FALSE, if there\n is not enough input. */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliSafeGetBits(\n BrotliBitReader* const br, brotli_reg_t n_bits, brotli_reg_t* val) {\n while (BrotliGetAvailableBits(br) < n_bits) {\n if (!BrotliPullByte(br)) {\n return BROTLI_FALSE;\n }\n }\n *val = BrotliGetBitsUnmasked(br) & BitMask(n_bits);\n return BROTLI_TRUE;\n}\n\n/* Advances the bit pos by |n_bits|. */\nstatic BROTLI_INLINE void BrotliDropBits(\n BrotliBitReader* const br, brotli_reg_t n_bits) {\n br->bit_pos_ -= n_bits;\n br->val_ >>= n_bits;\n}\n\n/* Make sure that there are no spectre bits in accumulator.\n This is important for the cases when some bytes are skipped\n (i.e. never placed into accumulator). */\nstatic BROTLI_INLINE void BrotliBitReaderNormalize(BrotliBitReader* br) {\n /* Actually, it is enough to normalize when br->bit_pos_ == 0 */\n if (br->bit_pos_ < (sizeof(brotli_reg_t) << 3u)) {\n br->val_ &= (((brotli_reg_t)1) << br->bit_pos_) - 1;\n }\n}\n\nstatic BROTLI_INLINE void BrotliBitReaderUnload(BrotliBitReader* br) {\n brotli_reg_t unused_bytes = BrotliGetAvailableBits(br) >> 3;\n brotli_reg_t unused_bits = unused_bytes << 3;\n br->next_in =\n (unused_bytes == 0) ? br->next_in : (br->next_in - unused_bytes);\n br->bit_pos_ -= unused_bits;\n BrotliBitReaderNormalize(br);\n}\n\n/* Reads the specified number of bits from |br| and advances the bit pos.\n Precondition: accumulator MUST contain at least |n_bits|. */\nstatic BROTLI_INLINE void BrotliTakeBits(BrotliBitReader* const br,\n brotli_reg_t n_bits,\n brotli_reg_t* val) {\n *val = BrotliGetBitsUnmasked(br) & BitMask(n_bits);\n BROTLI_LOG((\"[BrotliTakeBits] %d %d %d val: %6x\\n\",\n (int)BrotliBitReaderGetAvailIn(br), (int)br->bit_pos_,\n (int)n_bits, (int)*val));\n BrotliDropBits(br, n_bits);\n}\n\n/* Reads the specified number of bits from |br| and advances the bit pos.\n Assumes that there is enough input to perform BrotliFillBitWindow.\n Up to 24 bits are allowed to be requested from this method. */\nstatic BROTLI_INLINE brotli_reg_t BrotliReadBits24(\n BrotliBitReader* const br, brotli_reg_t n_bits) {\n BROTLI_DCHECK(n_bits <= 24);\n if (BROTLI_64_BITS || (n_bits <= 16)) {\n brotli_reg_t val;\n BrotliFillBitWindow(br, n_bits);\n BrotliTakeBits(br, n_bits, &val);\n return val;\n } else {\n brotli_reg_t low_val;\n brotli_reg_t high_val;\n BrotliFillBitWindow(br, 16);\n BrotliTakeBits(br, 16, &low_val);\n BrotliFillBitWindow(br, 8);\n BrotliTakeBits(br, n_bits - 16, &high_val);\n return low_val | (high_val << 16);\n }\n}\n\n/* Same as BrotliReadBits24, but allows reading up to 32 bits. */\nstatic BROTLI_INLINE brotli_reg_t BrotliReadBits32(\n BrotliBitReader* const br, brotli_reg_t n_bits) {\n BROTLI_DCHECK(n_bits <= 32);\n if (BROTLI_64_BITS || (n_bits <= 16)) {\n brotli_reg_t val;\n BrotliFillBitWindow(br, n_bits);\n BrotliTakeBits(br, n_bits, &val);\n return val;\n } else {\n brotli_reg_t low_val;\n brotli_reg_t high_val;\n BrotliFillBitWindow(br, 16);\n BrotliTakeBits(br, 16, &low_val);\n BrotliFillBitWindow(br, 16);\n BrotliTakeBits(br, n_bits - 16, &high_val);\n return low_val | (high_val << 16);\n }\n}\n\n/* Tries to read the specified amount of bits. Returns BROTLI_FALSE, if there\n is not enough input. |n_bits| MUST be positive.\n Up to 24 bits are allowed to be requested from this method. */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliSafeReadBits(\n BrotliBitReader* const br, brotli_reg_t n_bits, brotli_reg_t* val) {\n BROTLI_DCHECK(n_bits <= 24);\n while (BrotliGetAvailableBits(br) < n_bits) {\n if (!BrotliPullByte(br)) {\n return BROTLI_FALSE;\n }\n }\n BrotliTakeBits(br, n_bits, val);\n return BROTLI_TRUE;\n}\n\n/* Same as BrotliSafeReadBits, but allows reading up to 32 bits. */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliSafeReadBits32(\n BrotliBitReader* const br, brotli_reg_t n_bits, brotli_reg_t* val) {\n BROTLI_DCHECK(n_bits <= 32);\n if (BROTLI_64_BITS || (n_bits <= 24)) {\n while (BrotliGetAvailableBits(br) < n_bits) {\n if (!BrotliPullByte(br)) {\n return BROTLI_FALSE;\n }\n }\n BrotliTakeBits(br, n_bits, val);\n return BROTLI_TRUE;\n } else {\n return BrotliSafeReadBits32Slow(br, n_bits, val);\n }\n}\n\n/* Advances the bit reader position to the next byte boundary and verifies\n that any skipped bits are set to zero. */\nstatic BROTLI_INLINE BROTLI_BOOL BrotliJumpToByteBoundary(BrotliBitReader* br) {\n brotli_reg_t pad_bits_count = BrotliGetAvailableBits(br) & 0x7;\n brotli_reg_t pad_bits = 0;\n if (pad_bits_count != 0) {\n BrotliTakeBits(br, pad_bits_count, &pad_bits);\n }\n BrotliBitReaderNormalize(br);\n return TO_BROTLI_BOOL(pad_bits == 0);\n}\n\nstatic BROTLI_INLINE void BrotliDropBytes(BrotliBitReader* br, size_t num) {\n /* Check detour is legal: accumulator must to be empty. */\n BROTLI_DCHECK(br->bit_pos_ == 0);\n BROTLI_DCHECK(br->val_ == 0);\n br->next_in += num;\n}\n\n/* Copies remaining input bytes stored in the bit reader to the output. Value\n |num| may not be larger than BrotliGetRemainingBytes. The bit reader must be\n warmed up again after this. */\nstatic BROTLI_INLINE void BrotliCopyBytes(uint8_t* dest,\n BrotliBitReader* br, size_t num) {\n while (BrotliGetAvailableBits(br) >= 8 && num > 0) {\n *dest = (uint8_t)BrotliGetBitsUnmasked(br);\n BrotliDropBits(br, 8);\n ++dest;\n --num;\n }\n BrotliBitReaderNormalize(br);\n if (num > 0) {\n memcpy(dest, br->next_in, num);\n BrotliDropBytes(br, num);\n }\n}\n\nBROTLI_UNUSED_FUNCTION void BrotliBitReaderSuppressUnusedFunctions(void) {\n BROTLI_UNUSED(&BrotliBitReaderSuppressUnusedFunctions);\n\n BROTLI_UNUSED(&BrotliBitReaderGetAvailIn);\n BROTLI_UNUSED(&BrotliBitReaderLoadBits);\n BROTLI_UNUSED(&BrotliBitReaderRestoreState);\n BROTLI_UNUSED(&BrotliBitReaderSaveState);\n BROTLI_UNUSED(&BrotliBitReaderSetInput);\n BROTLI_UNUSED(&BrotliBitReaderUnload);\n BROTLI_UNUSED(&BrotliCheckInputAmount);\n BROTLI_UNUSED(&BrotliCopyBytes);\n BROTLI_UNUSED(&BrotliFillBitWindow16);\n BROTLI_UNUSED(&BrotliGet16BitsUnmasked);\n BROTLI_UNUSED(&BrotliGetBits);\n BROTLI_UNUSED(&BrotliGetRemainingBytes);\n BROTLI_UNUSED(&BrotliJumpToByteBoundary);\n BROTLI_UNUSED(&BrotliReadBits24);\n BROTLI_UNUSED(&BrotliReadBits32);\n BROTLI_UNUSED(&BrotliSafeGetBits);\n BROTLI_UNUSED(&BrotliSafeReadBits);\n BROTLI_UNUSED(&BrotliSafeReadBits32);\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_DEC_BIT_READER_H_ */\n" }, { "path": "c/dec/decode.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \"../common/shared_dictionary_internal.h\"\n#include \"../common/transform.h\"\n#include \"../common/version.h\"\n#include \"bit_reader.h\"\n#include \"huffman.h\"\n#include \"prefix.h\"\n#include \"state.h\"\n#include \"static_init.h\"\n\n#if defined(BROTLI_TARGET_NEON)\n#include \n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_FAILURE(CODE) (BROTLI_DUMP(), CODE)\n\n#define BROTLI_LOG_UINT(name) \\\n BROTLI_LOG((\"[%s] %s = %lu\\n\", __func__, #name, (unsigned long)(name)))\n#define BROTLI_LOG_ARRAY_INDEX(array_name, idx) \\\n BROTLI_LOG((\"[%s] %s[%lu] = %lu\\n\", __func__, #array_name, \\\n (unsigned long)(idx), (unsigned long)array_name[idx]))\n\n#define HUFFMAN_TABLE_BITS 8U\n#define HUFFMAN_TABLE_MASK 0xFF\n\n/* We need the slack region for the following reasons:\n - doing up to two 16-byte copies for fast backward copying\n - inserting transformed dictionary word:\n 255 prefix + 32 base + 255 suffix */\nstatic const brotli_reg_t kRingBufferWriteAheadSlack = 542;\n\nstatic const BROTLI_MODEL(\"small\")\nuint8_t kCodeLengthCodeOrder[BROTLI_CODE_LENGTH_CODES] = {\n 1, 2, 3, 4, 0, 5, 17, 6, 16, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n};\n\n/* Static prefix code for the complex code length code lengths. */\nstatic const BROTLI_MODEL(\"small\")\nuint8_t kCodeLengthPrefixLength[16] = {\n 2, 2, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3, 2, 2, 2, 4,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint8_t kCodeLengthPrefixValue[16] = {\n 0, 4, 3, 2, 0, 4, 3, 1, 0, 4, 3, 2, 0, 4, 3, 5,\n};\n\nBROTLI_BOOL BrotliDecoderSetParameter(\n BrotliDecoderState* state, BrotliDecoderParameter p, uint32_t value) {\n if (state->state != BROTLI_STATE_UNINITED) return BROTLI_FALSE;\n switch (p) {\n case BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION:\n state->canny_ringbuffer_allocation = !!value ? 0 : 1;\n return BROTLI_TRUE;\n\n case BROTLI_DECODER_PARAM_LARGE_WINDOW:\n state->large_window = TO_BROTLI_BOOL(!!value);\n return BROTLI_TRUE;\n\n default: return BROTLI_FALSE;\n }\n}\n\nBrotliDecoderState* BrotliDecoderCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n BrotliDecoderState* state = 0;\n if (!BrotliDecoderEnsureStaticInit()) {\n BROTLI_DUMP();\n return 0;\n }\n if (!alloc_func && !free_func) {\n state = (BrotliDecoderState*)malloc(sizeof(BrotliDecoderState));\n } else if (alloc_func && free_func) {\n state = (BrotliDecoderState*)alloc_func(opaque, sizeof(BrotliDecoderState));\n }\n if (state == 0) {\n BROTLI_DUMP();\n return 0;\n }\n if (!BrotliDecoderStateInit(state, alloc_func, free_func, opaque)) {\n BROTLI_DUMP();\n if (!alloc_func && !free_func) {\n free(state);\n } else if (alloc_func && free_func) {\n free_func(opaque, state);\n }\n return 0;\n }\n return state;\n}\n\n/* Deinitializes and frees BrotliDecoderState instance. */\nvoid BrotliDecoderDestroyInstance(BrotliDecoderState* state) {\n if (!state) {\n return;\n } else {\n brotli_free_func free_func = state->free_func;\n void* opaque = state->memory_manager_opaque;\n BrotliDecoderStateCleanup(state);\n free_func(opaque, state);\n }\n}\n\n/* Saves error code and converts it to BrotliDecoderResult. */\nstatic BROTLI_NOINLINE BrotliDecoderResult SaveErrorCode(\n BrotliDecoderState* s, BrotliDecoderErrorCode e, size_t consumed_input) {\n s->error_code = (int)e;\n s->used_input += consumed_input;\n if ((s->buffer_length != 0) && (s->br.next_in == s->br.last_in)) {\n /* If internal buffer is depleted at last, reset it. */\n s->buffer_length = 0;\n }\n switch (e) {\n case BROTLI_DECODER_SUCCESS:\n return BROTLI_DECODER_RESULT_SUCCESS;\n\n case BROTLI_DECODER_NEEDS_MORE_INPUT:\n return BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT;\n\n case BROTLI_DECODER_NEEDS_MORE_OUTPUT:\n return BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT;\n\n default:\n return BROTLI_DECODER_RESULT_ERROR;\n }\n}\n\n/* Decodes WBITS by reading 1 - 7 bits, or 0x11 for \"Large Window Brotli\".\n Precondition: bit-reader accumulator has at least 8 bits. */\nstatic BrotliDecoderErrorCode DecodeWindowBits(BrotliDecoderState* s,\n BrotliBitReader* br) {\n brotli_reg_t n;\n BROTLI_BOOL large_window = s->large_window;\n s->large_window = BROTLI_FALSE;\n BrotliTakeBits(br, 1, &n);\n if (n == 0) {\n s->window_bits = 16;\n return BROTLI_DECODER_SUCCESS;\n }\n BrotliTakeBits(br, 3, &n);\n if (n != 0) {\n s->window_bits = (17u + n) & 63u;\n return BROTLI_DECODER_SUCCESS;\n }\n BrotliTakeBits(br, 3, &n);\n if (n == 1) {\n if (large_window) {\n BrotliTakeBits(br, 1, &n);\n if (n == 1) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS);\n }\n s->large_window = BROTLI_TRUE;\n return BROTLI_DECODER_SUCCESS;\n } else {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS);\n }\n }\n if (n != 0) {\n s->window_bits = (8u + n) & 63u;\n return BROTLI_DECODER_SUCCESS;\n }\n s->window_bits = 17;\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_INLINE void memmove16(uint8_t* dst, uint8_t* src) {\n#if defined(BROTLI_TARGET_NEON)\n vst1q_u8(dst, vld1q_u8(src));\n#else\n uint32_t buffer[4];\n memcpy(buffer, src, 16);\n memcpy(dst, buffer, 16);\n#endif\n}\n\n/* Decodes a number in the range [0..255], by reading 1 - 11 bits. */\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode DecodeVarLenUint8(\n BrotliDecoderState* s, BrotliBitReader* br, brotli_reg_t* value) {\n brotli_reg_t bits;\n switch (s->substate_decode_uint8) {\n case BROTLI_STATE_DECODE_UINT8_NONE:\n if (BROTLI_PREDICT_FALSE(!BrotliSafeReadBits(br, 1, &bits))) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits == 0) {\n *value = 0;\n return BROTLI_DECODER_SUCCESS;\n }\n /* Fall through. */\n\n case BROTLI_STATE_DECODE_UINT8_SHORT:\n if (BROTLI_PREDICT_FALSE(!BrotliSafeReadBits(br, 3, &bits))) {\n s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_SHORT;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits == 0) {\n *value = 1;\n s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n /* Use output value as a temporary storage. It MUST be persisted. */\n *value = bits;\n /* Fall through. */\n\n case BROTLI_STATE_DECODE_UINT8_LONG:\n if (BROTLI_PREDICT_FALSE(!BrotliSafeReadBits(br, *value, &bits))) {\n s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_LONG;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n *value = ((brotli_reg_t)1U << *value) + bits;\n s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_NONE;\n return BROTLI_DECODER_SUCCESS;\n\n default:\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_UNREACHABLE); /* COV_NF_LINE */\n }\n}\n\n/* Decodes a metablock length and flags by reading 2 - 31 bits. */\nstatic BrotliDecoderErrorCode BROTLI_NOINLINE DecodeMetaBlockLength(\n BrotliDecoderState* s, BrotliBitReader* br) {\n brotli_reg_t bits;\n int i;\n for (;;) {\n switch (s->substate_metablock_header) {\n case BROTLI_STATE_METABLOCK_HEADER_NONE:\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n s->is_last_metablock = bits ? 1 : 0;\n s->meta_block_remaining_len = 0;\n s->is_uncompressed = 0;\n s->is_metadata = 0;\n if (!s->is_last_metablock) {\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NIBBLES;\n break;\n }\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_EMPTY;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_EMPTY:\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits) {\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NIBBLES;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_NIBBLES:\n if (!BrotliSafeReadBits(br, 2, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n s->size_nibbles = (uint8_t)(bits + 4);\n s->loop_counter = 0;\n if (bits == 3) {\n s->is_metadata = 1;\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_RESERVED;\n break;\n }\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_SIZE;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_SIZE:\n i = s->loop_counter;\n for (; i < (int)s->size_nibbles; ++i) {\n if (!BrotliSafeReadBits(br, 4, &bits)) {\n s->loop_counter = i;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (i + 1 == (int)s->size_nibbles && s->size_nibbles > 4 &&\n bits == 0) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE);\n }\n s->meta_block_remaining_len |= (int)(bits << (i * 4));\n }\n s->substate_metablock_header =\n BROTLI_STATE_METABLOCK_HEADER_UNCOMPRESSED;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_UNCOMPRESSED:\n if (!s->is_last_metablock) {\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n s->is_uncompressed = bits ? 1 : 0;\n }\n ++s->meta_block_remaining_len;\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE;\n return BROTLI_DECODER_SUCCESS;\n\n case BROTLI_STATE_METABLOCK_HEADER_RESERVED:\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits != 0) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_RESERVED);\n }\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_BYTES;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_BYTES:\n if (!BrotliSafeReadBits(br, 2, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits == 0) {\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n s->size_nibbles = (uint8_t)bits;\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_METADATA;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER_METADATA:\n i = s->loop_counter;\n for (; i < (int)s->size_nibbles; ++i) {\n if (!BrotliSafeReadBits(br, 8, &bits)) {\n s->loop_counter = i;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (i + 1 == (int)s->size_nibbles && s->size_nibbles > 1 &&\n bits == 0) {\n return BROTLI_FAILURE(\n BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE);\n }\n s->meta_block_remaining_len |= (int)(bits << (i * 8));\n }\n ++s->meta_block_remaining_len;\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE;\n return BROTLI_DECODER_SUCCESS;\n\n default:\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_UNREACHABLE); /* COV_NF_LINE */\n }\n }\n}\n\n/* Decodes the Huffman code.\n This method doesn't read data from the bit reader, BUT drops the amount of\n bits that correspond to the decoded symbol.\n bits MUST contain at least 15 (BROTLI_HUFFMAN_MAX_CODE_LENGTH) valid bits. */\nstatic BROTLI_INLINE brotli_reg_t DecodeSymbol(brotli_reg_t bits,\n const HuffmanCode* table,\n BrotliBitReader* br) {\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(table);\n BROTLI_HC_ADJUST_TABLE_INDEX(table, bits & HUFFMAN_TABLE_MASK);\n if (BROTLI_HC_FAST_LOAD_BITS(table) > HUFFMAN_TABLE_BITS) {\n brotli_reg_t nbits = BROTLI_HC_FAST_LOAD_BITS(table) - HUFFMAN_TABLE_BITS;\n BrotliDropBits(br, HUFFMAN_TABLE_BITS);\n BROTLI_HC_ADJUST_TABLE_INDEX(table,\n BROTLI_HC_FAST_LOAD_VALUE(table) +\n ((bits >> HUFFMAN_TABLE_BITS) & BitMask(nbits)));\n }\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(table));\n return BROTLI_HC_FAST_LOAD_VALUE(table);\n}\n\n/* Reads and decodes the next Huffman code from bit-stream.\n This method peeks 16 bits of input and drops 0 - 15 of them. */\nstatic BROTLI_INLINE brotli_reg_t ReadSymbol(const HuffmanCode* table,\n BrotliBitReader* br) {\n return DecodeSymbol(BrotliGet16BitsUnmasked(br), table, br);\n}\n\n/* Same as DecodeSymbol, but it is known that there is less than 15 bits of\n input are currently available. */\nstatic BROTLI_NOINLINE BROTLI_BOOL SafeDecodeSymbol(\n const HuffmanCode* table, BrotliBitReader* br, brotli_reg_t* result) {\n brotli_reg_t val;\n brotli_reg_t available_bits = BrotliGetAvailableBits(br);\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(table);\n if (available_bits == 0) {\n if (BROTLI_HC_FAST_LOAD_BITS(table) == 0) {\n *result = BROTLI_HC_FAST_LOAD_VALUE(table);\n return BROTLI_TRUE;\n }\n return BROTLI_FALSE; /* No valid bits at all. */\n }\n val = BrotliGetBitsUnmasked(br);\n BROTLI_HC_ADJUST_TABLE_INDEX(table, val & HUFFMAN_TABLE_MASK);\n if (BROTLI_HC_FAST_LOAD_BITS(table) <= HUFFMAN_TABLE_BITS) {\n if (BROTLI_HC_FAST_LOAD_BITS(table) <= available_bits) {\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(table));\n *result = BROTLI_HC_FAST_LOAD_VALUE(table);\n return BROTLI_TRUE;\n } else {\n return BROTLI_FALSE; /* Not enough bits for the first level. */\n }\n }\n if (available_bits <= HUFFMAN_TABLE_BITS) {\n return BROTLI_FALSE; /* Not enough bits to move to the second level. */\n }\n\n /* Speculatively drop HUFFMAN_TABLE_BITS. */\n val = (val & BitMask(BROTLI_HC_FAST_LOAD_BITS(table))) >> HUFFMAN_TABLE_BITS;\n available_bits -= HUFFMAN_TABLE_BITS;\n BROTLI_HC_ADJUST_TABLE_INDEX(table, BROTLI_HC_FAST_LOAD_VALUE(table) + val);\n if (available_bits < BROTLI_HC_FAST_LOAD_BITS(table)) {\n return BROTLI_FALSE; /* Not enough bits for the second level. */\n }\n\n BrotliDropBits(br, HUFFMAN_TABLE_BITS + BROTLI_HC_FAST_LOAD_BITS(table));\n *result = BROTLI_HC_FAST_LOAD_VALUE(table);\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadSymbol(\n const HuffmanCode* table, BrotliBitReader* br, brotli_reg_t* result) {\n brotli_reg_t val;\n if (BROTLI_PREDICT_TRUE(BrotliSafeGetBits(br, 15, &val))) {\n *result = DecodeSymbol(val, table, br);\n return BROTLI_TRUE;\n }\n return SafeDecodeSymbol(table, br, result);\n}\n\n/* Makes a look-up in first level Huffman table. Peeks 8 bits. */\nstatic BROTLI_INLINE void PreloadSymbol(int safe,\n const HuffmanCode* table,\n BrotliBitReader* br,\n brotli_reg_t* bits,\n brotli_reg_t* value) {\n if (safe) {\n return;\n }\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(table);\n BROTLI_HC_ADJUST_TABLE_INDEX(table, BrotliGetBits(br, HUFFMAN_TABLE_BITS));\n *bits = BROTLI_HC_FAST_LOAD_BITS(table);\n *value = BROTLI_HC_FAST_LOAD_VALUE(table);\n}\n\n/* Decodes the next Huffman code using data prepared by PreloadSymbol.\n Reads 0 - 15 bits. Also peeks 8 following bits. */\nstatic BROTLI_INLINE brotli_reg_t ReadPreloadedSymbol(const HuffmanCode* table,\n BrotliBitReader* br,\n brotli_reg_t* bits,\n brotli_reg_t* value) {\n brotli_reg_t result = *value;\n if (BROTLI_PREDICT_FALSE(*bits > HUFFMAN_TABLE_BITS)) {\n brotli_reg_t val = BrotliGet16BitsUnmasked(br);\n const HuffmanCode* ext = table + (val & HUFFMAN_TABLE_MASK) + *value;\n brotli_reg_t mask = BitMask((*bits - HUFFMAN_TABLE_BITS));\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(ext);\n BrotliDropBits(br, HUFFMAN_TABLE_BITS);\n BROTLI_HC_ADJUST_TABLE_INDEX(ext, (val >> HUFFMAN_TABLE_BITS) & mask);\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(ext));\n result = BROTLI_HC_FAST_LOAD_VALUE(ext);\n } else {\n BrotliDropBits(br, *bits);\n }\n PreloadSymbol(0, table, br, bits, value);\n return result;\n}\n\n/* Reads up to limit symbols from br and copies them into ringbuffer,\n starting from pos. Caller must ensure that there is enough space\n for the write. Returns the amount of symbols actually copied. */\nstatic BROTLI_INLINE int BrotliCopyPreloadedSymbolsToU8(const HuffmanCode* table,\n BrotliBitReader* br,\n brotli_reg_t* bits,\n brotli_reg_t* value,\n uint8_t* ringbuffer,\n int pos,\n const int limit) {\n /* Calculate range where CheckInputAmount is always true.\n Start with the number of bytes we can read. */\n int64_t new_lim = br->guard_in - br->next_in;\n /* Convert to bits, since symbols use variable number of bits. */\n new_lim *= 8;\n /* At most 15 bits per symbol, so this is safe. */\n new_lim /= 15;\n const int kMaximalOverread = 4;\n int pos_limit = limit;\n int copies = 0;\n if ((new_lim - kMaximalOverread) <= limit) {\n // Safe cast, since new_lim is already < num_steps\n pos_limit = (int)(new_lim - kMaximalOverread);\n }\n if (pos_limit < 0) {\n pos_limit = 0;\n }\n copies = pos_limit;\n pos_limit += pos;\n /* Fast path, caller made sure it is safe to write,\n we verified that is is safe to read. */\n for (; pos < pos_limit; pos++) {\n BROTLI_DCHECK(BrotliCheckInputAmount(br));\n ringbuffer[pos] = (uint8_t)ReadPreloadedSymbol(table, br, bits, value);\n BROTLI_LOG_ARRAY_INDEX(ringbuffer, pos);\n }\n /* Do the remainder, caller made sure it is safe to write,\n we need to bverify that it is safe to read. */\n while (BrotliCheckInputAmount(br) && copies < limit) {\n ringbuffer[pos] = (uint8_t)ReadPreloadedSymbol(table, br, bits, value);\n BROTLI_LOG_ARRAY_INDEX(ringbuffer, pos);\n pos++;\n copies++;\n }\n return copies;\n}\n\nstatic BROTLI_INLINE brotli_reg_t Log2Floor(brotli_reg_t x) {\n brotli_reg_t result = 0;\n while (x) {\n x >>= 1;\n ++result;\n }\n return result;\n}\n\n/* Reads (s->symbol + 1) symbols.\n Totally 1..4 symbols are read, 1..11 bits each.\n The list of symbols MUST NOT contain duplicates. */\nstatic BrotliDecoderErrorCode ReadSimpleHuffmanSymbols(\n brotli_reg_t alphabet_size_max, brotli_reg_t alphabet_size_limit,\n BrotliDecoderState* s) {\n /* max_bits == 1..11; symbol == 0..3; 1..44 bits will be read. */\n BrotliBitReader* br = &s->br;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n brotli_reg_t max_bits = Log2Floor(alphabet_size_max - 1);\n brotli_reg_t i = h->sub_loop_counter;\n brotli_reg_t num_symbols = h->symbol;\n while (i <= num_symbols) {\n brotli_reg_t v;\n if (BROTLI_PREDICT_FALSE(!BrotliSafeReadBits(br, max_bits, &v))) {\n h->sub_loop_counter = i;\n h->substate_huffman = BROTLI_STATE_HUFFMAN_SIMPLE_READ;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (v >= alphabet_size_limit) {\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET);\n }\n h->symbols_lists_array[i] = (uint16_t)v;\n BROTLI_LOG_UINT(h->symbols_lists_array[i]);\n ++i;\n }\n\n for (i = 0; i < num_symbols; ++i) {\n brotli_reg_t k = i + 1;\n for (; k <= num_symbols; ++k) {\n if (h->symbols_lists_array[i] == h->symbols_lists_array[k]) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME);\n }\n }\n }\n\n return BROTLI_DECODER_SUCCESS;\n}\n\n/* Process single decoded symbol code length:\n A) reset the repeat variable\n B) remember code length (if it is not 0)\n C) extend corresponding index-chain\n D) reduce the Huffman space\n E) update the histogram */\nstatic BROTLI_INLINE void ProcessSingleCodeLength(brotli_reg_t code_len,\n brotli_reg_t* symbol, brotli_reg_t* repeat, brotli_reg_t* space,\n brotli_reg_t* prev_code_len, uint16_t* symbol_lists,\n uint16_t* code_length_histo, int* next_symbol) {\n *repeat = 0;\n if (code_len != 0) { /* code_len == 1..15 */\n symbol_lists[next_symbol[code_len]] = (uint16_t)(*symbol);\n next_symbol[code_len] = (int)(*symbol);\n *prev_code_len = code_len;\n *space -= 32768U >> code_len;\n code_length_histo[code_len]++;\n BROTLI_LOG((\"[ReadHuffmanCode] code_length[%d] = %d\\n\",\n (int)*symbol, (int)code_len));\n }\n (*symbol)++;\n}\n\n/* Process repeated symbol code length.\n A) Check if it is the extension of previous repeat sequence; if the decoded\n value is not BROTLI_REPEAT_PREVIOUS_CODE_LENGTH, then it is a new\n symbol-skip\n B) Update repeat variable\n C) Check if operation is feasible (fits alphabet)\n D) For each symbol do the same operations as in ProcessSingleCodeLength\n\n PRECONDITION: code_len == BROTLI_REPEAT_PREVIOUS_CODE_LENGTH or\n code_len == BROTLI_REPEAT_ZERO_CODE_LENGTH */\nstatic BROTLI_INLINE void ProcessRepeatedCodeLength(brotli_reg_t code_len,\n brotli_reg_t repeat_delta, brotli_reg_t alphabet_size, brotli_reg_t* symbol,\n brotli_reg_t* repeat, brotli_reg_t* space, brotli_reg_t* prev_code_len,\n brotli_reg_t* repeat_code_len, uint16_t* symbol_lists,\n uint16_t* code_length_histo, int* next_symbol) {\n brotli_reg_t old_repeat;\n brotli_reg_t extra_bits = 3; /* for BROTLI_REPEAT_ZERO_CODE_LENGTH */\n brotli_reg_t new_len = 0; /* for BROTLI_REPEAT_ZERO_CODE_LENGTH */\n if (code_len == BROTLI_REPEAT_PREVIOUS_CODE_LENGTH) {\n new_len = *prev_code_len;\n extra_bits = 2;\n }\n if (*repeat_code_len != new_len) {\n *repeat = 0;\n *repeat_code_len = new_len;\n }\n old_repeat = *repeat;\n if (*repeat > 0) {\n *repeat -= 2;\n *repeat <<= extra_bits;\n }\n *repeat += repeat_delta + 3U;\n repeat_delta = *repeat - old_repeat;\n if (*symbol + repeat_delta > alphabet_size) {\n BROTLI_DUMP();\n *symbol = alphabet_size;\n *space = 0xFFFFF;\n return;\n }\n BROTLI_LOG((\"[ReadHuffmanCode] code_length[%d..%d] = %d\\n\",\n (int)*symbol, (int)(*symbol + repeat_delta - 1), (int)*repeat_code_len));\n if (*repeat_code_len != 0) {\n brotli_reg_t last = *symbol + repeat_delta;\n int next = next_symbol[*repeat_code_len];\n do {\n symbol_lists[next] = (uint16_t)*symbol;\n next = (int)*symbol;\n } while (++(*symbol) != last);\n next_symbol[*repeat_code_len] = next;\n *space -= repeat_delta << (15 - *repeat_code_len);\n code_length_histo[*repeat_code_len] =\n (uint16_t)(code_length_histo[*repeat_code_len] + repeat_delta);\n } else {\n *symbol += repeat_delta;\n }\n}\n\n/* Reads and decodes symbol codelengths. */\nstatic BrotliDecoderErrorCode ReadSymbolCodeLengths(\n brotli_reg_t alphabet_size, BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n brotli_reg_t symbol = h->symbol;\n brotli_reg_t repeat = h->repeat;\n brotli_reg_t space = h->space;\n brotli_reg_t prev_code_len = h->prev_code_len;\n brotli_reg_t repeat_code_len = h->repeat_code_len;\n uint16_t* symbol_lists = h->symbol_lists;\n uint16_t* code_length_histo = h->code_length_histo;\n int* next_symbol = h->next_symbol;\n if (!BrotliWarmupBitReader(br)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n while (symbol < alphabet_size && space > 0) {\n const HuffmanCode* p = h->table;\n brotli_reg_t code_len;\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(p);\n if (!BrotliCheckInputAmount(br)) {\n h->symbol = symbol;\n h->repeat = repeat;\n h->prev_code_len = prev_code_len;\n h->repeat_code_len = repeat_code_len;\n h->space = space;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n BrotliFillBitWindow16(br);\n BROTLI_HC_ADJUST_TABLE_INDEX(p, BrotliGetBitsUnmasked(br) &\n BitMask(BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH));\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(p)); /* Use 1..5 bits. */\n code_len = BROTLI_HC_FAST_LOAD_VALUE(p); /* code_len == 0..17 */\n if (code_len < BROTLI_REPEAT_PREVIOUS_CODE_LENGTH) {\n ProcessSingleCodeLength(code_len, &symbol, &repeat, &space,\n &prev_code_len, symbol_lists, code_length_histo, next_symbol);\n } else { /* code_len == 16..17, extra_bits == 2..3 */\n brotli_reg_t extra_bits =\n (code_len == BROTLI_REPEAT_PREVIOUS_CODE_LENGTH) ? 2 : 3;\n brotli_reg_t repeat_delta =\n BrotliGetBitsUnmasked(br) & BitMask(extra_bits);\n BrotliDropBits(br, extra_bits);\n ProcessRepeatedCodeLength(code_len, repeat_delta, alphabet_size,\n &symbol, &repeat, &space, &prev_code_len, &repeat_code_len,\n symbol_lists, code_length_histo, next_symbol);\n }\n }\n h->space = space;\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BrotliDecoderErrorCode SafeReadSymbolCodeLengths(\n brotli_reg_t alphabet_size, BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n BROTLI_BOOL get_byte = BROTLI_FALSE;\n while (h->symbol < alphabet_size && h->space > 0) {\n const HuffmanCode* p = h->table;\n brotli_reg_t code_len;\n brotli_reg_t available_bits;\n brotli_reg_t bits = 0;\n BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(p);\n if (get_byte && !BrotliPullByte(br)) return BROTLI_DECODER_NEEDS_MORE_INPUT;\n get_byte = BROTLI_FALSE;\n available_bits = BrotliGetAvailableBits(br);\n if (available_bits != 0) {\n bits = (uint32_t)BrotliGetBitsUnmasked(br);\n }\n BROTLI_HC_ADJUST_TABLE_INDEX(p,\n bits & BitMask(BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH));\n if (BROTLI_HC_FAST_LOAD_BITS(p) > available_bits) {\n get_byte = BROTLI_TRUE;\n continue;\n }\n code_len = BROTLI_HC_FAST_LOAD_VALUE(p); /* code_len == 0..17 */\n if (code_len < BROTLI_REPEAT_PREVIOUS_CODE_LENGTH) {\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(p));\n ProcessSingleCodeLength(code_len, &h->symbol, &h->repeat, &h->space,\n &h->prev_code_len, h->symbol_lists, h->code_length_histo,\n h->next_symbol);\n } else { /* code_len == 16..17, extra_bits == 2..3 */\n brotli_reg_t extra_bits = code_len - 14U;\n brotli_reg_t repeat_delta = (bits >> BROTLI_HC_FAST_LOAD_BITS(p)) &\n BitMask(extra_bits);\n if (available_bits < BROTLI_HC_FAST_LOAD_BITS(p) + extra_bits) {\n get_byte = BROTLI_TRUE;\n continue;\n }\n BrotliDropBits(br, BROTLI_HC_FAST_LOAD_BITS(p) + extra_bits);\n ProcessRepeatedCodeLength(code_len, repeat_delta, alphabet_size,\n &h->symbol, &h->repeat, &h->space, &h->prev_code_len,\n &h->repeat_code_len, h->symbol_lists, h->code_length_histo,\n h->next_symbol);\n }\n }\n return BROTLI_DECODER_SUCCESS;\n}\n\n/* Reads and decodes 15..18 codes using static prefix code.\n Each code is 2..4 bits long. In total 30..72 bits are used. */\nstatic BrotliDecoderErrorCode ReadCodeLengthCodeLengths(BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n brotli_reg_t num_codes = h->repeat;\n brotli_reg_t space = h->space;\n brotli_reg_t i = h->sub_loop_counter;\n for (; i < BROTLI_CODE_LENGTH_CODES; ++i) {\n const uint8_t code_len_idx = kCodeLengthCodeOrder[i];\n brotli_reg_t ix;\n brotli_reg_t v;\n if (BROTLI_PREDICT_FALSE(!BrotliSafeGetBits(br, 4, &ix))) {\n brotli_reg_t available_bits = BrotliGetAvailableBits(br);\n if (available_bits != 0) {\n ix = BrotliGetBitsUnmasked(br) & 0xF;\n } else {\n ix = 0;\n }\n if (kCodeLengthPrefixLength[ix] > available_bits) {\n h->sub_loop_counter = i;\n h->repeat = num_codes;\n h->space = space;\n h->substate_huffman = BROTLI_STATE_HUFFMAN_COMPLEX;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n }\n v = kCodeLengthPrefixValue[ix];\n BrotliDropBits(br, kCodeLengthPrefixLength[ix]);\n h->code_length_code_lengths[code_len_idx] = (uint8_t)v;\n BROTLI_LOG_ARRAY_INDEX(h->code_length_code_lengths, code_len_idx);\n if (v != 0) {\n space = space - (32U >> v);\n ++num_codes;\n ++h->code_length_histo[v];\n if (space - 1U >= 32U) {\n /* space is 0 or wrapped around. */\n break;\n }\n }\n }\n if (!(num_codes == 1 || space == 0)) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_CL_SPACE);\n }\n return BROTLI_DECODER_SUCCESS;\n}\n\n/* Decodes the Huffman tables.\n There are 2 scenarios:\n A) Huffman code contains only few symbols (1..4). Those symbols are read\n directly; their code lengths are defined by the number of symbols.\n For this scenario 4 - 49 bits will be read.\n\n B) 2-phase decoding:\n B.1) Small Huffman table is decoded; it is specified with code lengths\n encoded with predefined entropy code. 32 - 74 bits are used.\n B.2) Decoded table is used to decode code lengths of symbols in resulting\n Huffman table. In worst case 3520 bits are read. */\nstatic BrotliDecoderErrorCode ReadHuffmanCode(brotli_reg_t alphabet_size_max,\n brotli_reg_t alphabet_size_limit,\n HuffmanCode* table,\n brotli_reg_t* opt_table_size,\n BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n /* State machine. */\n for (;;) {\n switch (h->substate_huffman) {\n case BROTLI_STATE_HUFFMAN_NONE:\n if (!BrotliSafeReadBits(br, 2, &h->sub_loop_counter)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n BROTLI_LOG_UINT(h->sub_loop_counter);\n /* The value is used as follows:\n 1 for simple code;\n 0 for no skipping, 2 skips 2 code lengths, 3 skips 3 code lengths */\n if (h->sub_loop_counter != 1) {\n h->space = 32;\n h->repeat = 0; /* num_codes */\n memset(&h->code_length_histo[0], 0, sizeof(h->code_length_histo[0]) *\n (BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH + 1));\n memset(&h->code_length_code_lengths[0], 0,\n sizeof(h->code_length_code_lengths));\n h->substate_huffman = BROTLI_STATE_HUFFMAN_COMPLEX;\n continue;\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_SIMPLE_SIZE:\n /* Read symbols, codes & code lengths directly. */\n if (!BrotliSafeReadBits(br, 2, &h->symbol)) { /* num_symbols */\n h->substate_huffman = BROTLI_STATE_HUFFMAN_SIMPLE_SIZE;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n h->sub_loop_counter = 0;\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_SIMPLE_READ: {\n BrotliDecoderErrorCode result =\n ReadSimpleHuffmanSymbols(alphabet_size_max, alphabet_size_limit, s);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_SIMPLE_BUILD: {\n brotli_reg_t table_size;\n if (h->symbol == 3) {\n brotli_reg_t bits;\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n h->substate_huffman = BROTLI_STATE_HUFFMAN_SIMPLE_BUILD;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n h->symbol += bits;\n }\n BROTLI_LOG_UINT(h->symbol);\n table_size = BrotliBuildSimpleHuffmanTable(table, HUFFMAN_TABLE_BITS,\n h->symbols_lists_array,\n (uint32_t)h->symbol);\n if (opt_table_size) {\n *opt_table_size = table_size;\n }\n h->substate_huffman = BROTLI_STATE_HUFFMAN_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n\n /* Decode Huffman-coded code lengths. */\n case BROTLI_STATE_HUFFMAN_COMPLEX: {\n brotli_reg_t i;\n BrotliDecoderErrorCode result = ReadCodeLengthCodeLengths(s);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n BrotliBuildCodeLengthsHuffmanTable(h->table,\n h->code_length_code_lengths,\n h->code_length_histo);\n memset(&h->code_length_histo[0], 0, sizeof(h->code_length_histo));\n for (i = 0; i <= BROTLI_HUFFMAN_MAX_CODE_LENGTH; ++i) {\n h->next_symbol[i] = (int)i - (BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1);\n h->symbol_lists[h->next_symbol[i]] = 0xFFFF;\n }\n\n h->symbol = 0;\n h->prev_code_len = BROTLI_INITIAL_REPEATED_CODE_LENGTH;\n h->repeat = 0;\n h->repeat_code_len = 0;\n h->space = 32768;\n h->substate_huffman = BROTLI_STATE_HUFFMAN_LENGTH_SYMBOLS;\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_LENGTH_SYMBOLS: {\n brotli_reg_t table_size;\n BrotliDecoderErrorCode result = ReadSymbolCodeLengths(\n alphabet_size_limit, s);\n if (result == BROTLI_DECODER_NEEDS_MORE_INPUT) {\n result = SafeReadSymbolCodeLengths(alphabet_size_limit, s);\n }\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n\n if (h->space != 0) {\n BROTLI_LOG((\"[ReadHuffmanCode] space = %d\\n\", (int)h->space));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE);\n }\n table_size = BrotliBuildHuffmanTable(\n table, HUFFMAN_TABLE_BITS, h->symbol_lists, h->code_length_histo);\n if (opt_table_size) {\n *opt_table_size = table_size;\n }\n h->substate_huffman = BROTLI_STATE_HUFFMAN_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n\n default:\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_UNREACHABLE); /* COV_NF_LINE */\n }\n }\n}\n\n/* Decodes a block length by reading 3..39 bits. */\nstatic BROTLI_INLINE brotli_reg_t ReadBlockLength(const HuffmanCode* table,\n BrotliBitReader* br) {\n brotli_reg_t code;\n brotli_reg_t nbits;\n code = ReadSymbol(table, br);\n nbits = _kBrotliPrefixCodeRanges[code].nbits; /* nbits == 2..24 */\n return _kBrotliPrefixCodeRanges[code].offset + BrotliReadBits24(br, nbits);\n}\n\n/* WARNING: if state is not BROTLI_STATE_READ_BLOCK_LENGTH_NONE, then\n reading can't be continued with ReadBlockLength. */\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadBlockLength(\n BrotliDecoderState* s, brotli_reg_t* result, const HuffmanCode* table,\n BrotliBitReader* br) {\n brotli_reg_t index;\n if (s->substate_read_block_length == BROTLI_STATE_READ_BLOCK_LENGTH_NONE) {\n if (!SafeReadSymbol(table, br, &index)) {\n return BROTLI_FALSE;\n }\n } else {\n index = s->block_length_index;\n }\n {\n brotli_reg_t bits;\n brotli_reg_t nbits = _kBrotliPrefixCodeRanges[index].nbits;\n brotli_reg_t offset = _kBrotliPrefixCodeRanges[index].offset;\n if (!BrotliSafeReadBits(br, nbits, &bits)) {\n s->block_length_index = index;\n s->substate_read_block_length = BROTLI_STATE_READ_BLOCK_LENGTH_SUFFIX;\n return BROTLI_FALSE;\n }\n *result = offset + bits;\n s->substate_read_block_length = BROTLI_STATE_READ_BLOCK_LENGTH_NONE;\n return BROTLI_TRUE;\n }\n}\n\n/* Transform:\n 1) initialize list L with values 0, 1,... 255\n 2) For each input element X:\n 2.1) let Y = L[X]\n 2.2) remove X-th element from L\n 2.3) prepend Y to L\n 2.4) append Y to output\n\n In most cases max(Y) <= 7, so most of L remains intact.\n To reduce the cost of initialization, we reuse L, remember the upper bound\n of Y values, and reinitialize only first elements in L.\n\n Most of input values are 0 and 1. To reduce number of branches, we replace\n inner for loop with do-while. */\nstatic BROTLI_NOINLINE void InverseMoveToFrontTransform(\n uint8_t* v, brotli_reg_t v_len, BrotliDecoderState* state) {\n /* Reinitialize elements that could have been changed. */\n brotli_reg_t i = 1;\n brotli_reg_t upper_bound = state->mtf_upper_bound;\n uint32_t* mtf = &state->mtf[1]; /* Make mtf[-1] addressable. */\n uint8_t* mtf_u8 = (uint8_t*)mtf;\n /* Load endian-aware constant. */\n const uint8_t b0123[4] = {0, 1, 2, 3};\n uint32_t pattern;\n memcpy(&pattern, &b0123, 4);\n\n /* Initialize list using 4 consequent values pattern. */\n mtf[0] = pattern;\n do {\n pattern += 0x04040404; /* Advance all 4 values by 4. */\n mtf[i] = pattern;\n i++;\n } while (i <= upper_bound);\n\n /* Transform the input. */\n upper_bound = 0;\n for (i = 0; i < v_len; ++i) {\n int index = v[i];\n uint8_t value = mtf_u8[index];\n upper_bound |= v[i];\n v[i] = value;\n mtf_u8[-1] = value;\n do {\n index--;\n mtf_u8[index + 1] = mtf_u8[index];\n } while (index >= 0);\n }\n /* Remember amount of elements to be reinitialized. */\n state->mtf_upper_bound = upper_bound >> 2;\n}\n\n/* Decodes a series of Huffman table using ReadHuffmanCode function. */\nstatic BrotliDecoderErrorCode HuffmanTreeGroupDecode(\n HuffmanTreeGroup* group, BrotliDecoderState* s) {\n BrotliMetablockHeaderArena* h = &s->arena.header;\n if (h->substate_tree_group != BROTLI_STATE_TREE_GROUP_LOOP) {\n h->next = group->codes;\n h->htree_index = 0;\n h->substate_tree_group = BROTLI_STATE_TREE_GROUP_LOOP;\n }\n while (h->htree_index < group->num_htrees) {\n brotli_reg_t table_size;\n BrotliDecoderErrorCode result = ReadHuffmanCode(group->alphabet_size_max,\n group->alphabet_size_limit, h->next, &table_size, s);\n if (result != BROTLI_DECODER_SUCCESS) return result;\n group->htrees[h->htree_index] = h->next;\n h->next += table_size;\n ++h->htree_index;\n }\n h->substate_tree_group = BROTLI_STATE_TREE_GROUP_NONE;\n return BROTLI_DECODER_SUCCESS;\n}\n\n/* Decodes a context map.\n Decoding is done in 4 phases:\n 1) Read auxiliary information (6..16 bits) and allocate memory.\n In case of trivial context map, decoding is finished at this phase.\n 2) Decode Huffman table using ReadHuffmanCode function.\n This table will be used for reading context map items.\n 3) Read context map items; \"0\" values could be run-length encoded.\n 4) Optionally, apply InverseMoveToFront transform to the resulting map. */\nstatic BrotliDecoderErrorCode DecodeContextMap(brotli_reg_t context_map_size,\n brotli_reg_t* num_htrees,\n uint8_t** context_map_arg,\n BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n BrotliDecoderErrorCode result = BROTLI_DECODER_SUCCESS;\n BrotliMetablockHeaderArena* h = &s->arena.header;\n\n switch ((int)h->substate_context_map) {\n case BROTLI_STATE_CONTEXT_MAP_NONE:\n result = DecodeVarLenUint8(s, br, num_htrees);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n (*num_htrees)++;\n h->context_index = 0;\n BROTLI_LOG_UINT(context_map_size);\n BROTLI_LOG_UINT(*num_htrees);\n *context_map_arg =\n (uint8_t*)BROTLI_DECODER_ALLOC(s, (size_t)context_map_size);\n if (*context_map_arg == 0) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP);\n }\n if (*num_htrees <= 1) {\n memset(*context_map_arg, 0, (size_t)context_map_size);\n return BROTLI_DECODER_SUCCESS;\n }\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_READ_PREFIX;\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_READ_PREFIX: {\n brotli_reg_t bits;\n /* In next stage ReadHuffmanCode uses at least 4 bits, so it is safe\n to peek 4 bits ahead. */\n if (!BrotliSafeGetBits(br, 5, &bits)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if ((bits & 1) != 0) { /* Use RLE for zeros. */\n h->max_run_length_prefix = (bits >> 1) + 1;\n BrotliDropBits(br, 5);\n } else {\n h->max_run_length_prefix = 0;\n BrotliDropBits(br, 1);\n }\n BROTLI_LOG_UINT(h->max_run_length_prefix);\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_HUFFMAN;\n }\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_HUFFMAN: {\n brotli_reg_t alphabet_size = *num_htrees + h->max_run_length_prefix;\n result = ReadHuffmanCode(alphabet_size, alphabet_size,\n h->context_map_table, NULL, s);\n if (result != BROTLI_DECODER_SUCCESS) return result;\n h->code = 0xFFFF;\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_DECODE;\n }\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_DECODE: {\n brotli_reg_t context_index = h->context_index;\n brotli_reg_t max_run_length_prefix = h->max_run_length_prefix;\n uint8_t* context_map = *context_map_arg;\n brotli_reg_t code = h->code;\n BROTLI_BOOL skip_preamble = (code != 0xFFFF);\n while (context_index < context_map_size || skip_preamble) {\n if (!skip_preamble) {\n if (!SafeReadSymbol(h->context_map_table, br, &code)) {\n h->code = 0xFFFF;\n h->context_index = context_index;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n BROTLI_LOG_UINT(code);\n\n if (code == 0) {\n context_map[context_index++] = 0;\n continue;\n }\n if (code > max_run_length_prefix) {\n context_map[context_index++] =\n (uint8_t)(code - max_run_length_prefix);\n continue;\n }\n } else {\n skip_preamble = BROTLI_FALSE;\n }\n /* RLE sub-stage. */\n {\n brotli_reg_t reps;\n if (!BrotliSafeReadBits(br, code, &reps)) {\n h->code = code;\n h->context_index = context_index;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n reps += (brotli_reg_t)1U << code;\n BROTLI_LOG_UINT(reps);\n if (context_index + reps > context_map_size) {\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT);\n }\n do {\n context_map[context_index++] = 0;\n } while (--reps);\n }\n }\n }\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_TRANSFORM: {\n brotli_reg_t bits;\n if (!BrotliSafeReadBits(br, 1, &bits)) {\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_TRANSFORM;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (bits != 0) {\n InverseMoveToFrontTransform(*context_map_arg, context_map_size, s);\n }\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_NONE;\n return BROTLI_DECODER_SUCCESS;\n }\n\n default:\n return\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_UNREACHABLE); /* COV_NF_LINE */\n }\n}\n\n/* Decodes a command or literal and updates block type ring-buffer.\n Reads 3..54 bits. */\nstatic BROTLI_INLINE BrotliDecoderErrorCode DecodeBlockTypeAndLength(\n int safe, BrotliDecoderState* s, int tree_type) {\n brotli_reg_t max_block_type = s->num_block_types[tree_type];\n const HuffmanCode* type_tree = &s->block_type_trees[\n tree_type * BROTLI_HUFFMAN_MAX_SIZE_258];\n const HuffmanCode* len_tree = &s->block_len_trees[\n tree_type * BROTLI_HUFFMAN_MAX_SIZE_26];\n BrotliBitReader* br = &s->br;\n brotli_reg_t* ringbuffer = &s->block_type_rb[tree_type * 2];\n brotli_reg_t block_type;\n if (max_block_type <= 1) {\n return BROTLI_DECODER_ERROR_FORMAT_BLOCK_SWITCH;\n }\n\n /* Read 0..15 + 3..39 bits. */\n if (!safe) {\n block_type = ReadSymbol(type_tree, br);\n s->block_length[tree_type] = ReadBlockLength(len_tree, br);\n } else {\n BrotliBitReaderState memento;\n BrotliBitReaderSaveState(br, &memento);\n if (!SafeReadSymbol(type_tree, br, &block_type)) {\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n if (!SafeReadBlockLength(s, &s->block_length[tree_type], len_tree, br)) {\n s->substate_read_block_length = BROTLI_STATE_READ_BLOCK_LENGTH_NONE;\n BrotliBitReaderRestoreState(br, &memento);\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n }\n\n if (block_type == 1) {\n block_type = ringbuffer[1] + 1;\n } else if (block_type == 0) {\n block_type = ringbuffer[0];\n } else {\n block_type -= 2;\n }\n if (block_type >= max_block_type) {\n block_type -= max_block_type;\n }\n ringbuffer[0] = ringbuffer[1];\n ringbuffer[1] = block_type;\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_INLINE void DetectTrivialLiteralBlockTypes(\n BrotliDecoderState* s) {\n size_t i;\n for (i = 0; i < 8; ++i) s->trivial_literal_contexts[i] = 0;\n for (i = 0; i < s->num_block_types[0]; i++) {\n size_t offset = i << BROTLI_LITERAL_CONTEXT_BITS;\n size_t error = 0;\n size_t sample = s->context_map[offset];\n size_t j;\n for (j = 0; j < (1u << BROTLI_LITERAL_CONTEXT_BITS);) {\n /* NOLINTNEXTLINE(bugprone-macro-repeated-side-effects) */\n BROTLI_REPEAT_4({ error |= s->context_map[offset + j++] ^ sample; })\n }\n if (error == 0) {\n s->trivial_literal_contexts[i >> 5] |= 1u << (i & 31);\n }\n }\n}\n\nstatic BROTLI_INLINE void PrepareLiteralDecoding(BrotliDecoderState* s) {\n uint8_t context_mode;\n size_t trivial;\n brotli_reg_t block_type = s->block_type_rb[1];\n brotli_reg_t context_offset = block_type << BROTLI_LITERAL_CONTEXT_BITS;\n s->context_map_slice = s->context_map + context_offset;\n trivial = s->trivial_literal_contexts[block_type >> 5];\n s->trivial_literal_context = (trivial >> (block_type & 31)) & 1;\n s->literal_htree = s->literal_hgroup.htrees[s->context_map_slice[0]];\n context_mode = s->context_modes[block_type] & 3;\n s->context_lookup = BROTLI_CONTEXT_LUT(context_mode);\n}\n\n/* Decodes the block type and updates the state for literal context.\n Reads 3..54 bits. */\nstatic BROTLI_INLINE BrotliDecoderErrorCode DecodeLiteralBlockSwitchInternal(\n int safe, BrotliDecoderState* s) {\n BrotliDecoderErrorCode result = DecodeBlockTypeAndLength(safe, s, 0);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n PrepareLiteralDecoding(s);\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode\nDecodeLiteralBlockSwitch(BrotliDecoderState* s) {\n return DecodeLiteralBlockSwitchInternal(0, s);\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode SafeDecodeLiteralBlockSwitch(\n BrotliDecoderState* s) {\n return DecodeLiteralBlockSwitchInternal(1, s);\n}\n\n/* Block switch for insert/copy length.\n Reads 3..54 bits. */\nstatic BROTLI_INLINE BrotliDecoderErrorCode DecodeCommandBlockSwitchInternal(\n int safe, BrotliDecoderState* s) {\n BrotliDecoderErrorCode result = DecodeBlockTypeAndLength(safe, s, 1);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n s->htree_command = s->insert_copy_hgroup.htrees[s->block_type_rb[3]];\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode\nDecodeCommandBlockSwitch(BrotliDecoderState* s) {\n return DecodeCommandBlockSwitchInternal(0, s);\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode\nSafeDecodeCommandBlockSwitch(BrotliDecoderState* s) {\n return DecodeCommandBlockSwitchInternal(1, s);\n}\n\n/* Block switch for distance codes.\n Reads 3..54 bits. */\nstatic BROTLI_INLINE BrotliDecoderErrorCode DecodeDistanceBlockSwitchInternal(\n int safe, BrotliDecoderState* s) {\n BrotliDecoderErrorCode result = DecodeBlockTypeAndLength(safe, s, 2);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n s->dist_context_map_slice = s->dist_context_map +\n (s->block_type_rb[5] << BROTLI_DISTANCE_CONTEXT_BITS);\n s->dist_htree_index = s->dist_context_map_slice[s->distance_context];\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode\nDecodeDistanceBlockSwitch(BrotliDecoderState* s) {\n return DecodeDistanceBlockSwitchInternal(0, s);\n}\n\nstatic BROTLI_BOOL BROTLI_NOINLINE SafeDecodeDistanceBlockSwitch(\n BrotliDecoderState* s) {\n return DecodeDistanceBlockSwitchInternal(1, s);\n}\n\nstatic size_t UnwrittenBytes(const BrotliDecoderState* s, BROTLI_BOOL wrap) {\n size_t pos = wrap && s->pos > s->ringbuffer_size ?\n (size_t)s->ringbuffer_size : (size_t)(s->pos);\n size_t partial_pos_rb = (s->rb_roundtrips * (size_t)s->ringbuffer_size) + pos;\n return partial_pos_rb - s->partial_pos_out;\n}\n\n/* Dumps output.\n Returns BROTLI_DECODER_NEEDS_MORE_OUTPUT only if there is more output to push\n and either ring-buffer is as big as window size, or |force| is true. */\nstatic BrotliDecoderErrorCode BROTLI_NOINLINE WriteRingBuffer(\n BrotliDecoderState* s, size_t* available_out, uint8_t** next_out,\n size_t* total_out, BROTLI_BOOL force) {\n uint8_t* start =\n s->ringbuffer + (s->partial_pos_out & (size_t)s->ringbuffer_mask);\n size_t to_write = UnwrittenBytes(s, BROTLI_TRUE);\n size_t num_written = *available_out;\n if (num_written > to_write) {\n num_written = to_write;\n }\n if (s->meta_block_remaining_len < 0) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1);\n }\n if (next_out && !*next_out) {\n *next_out = start;\n } else {\n if (next_out) {\n memcpy(*next_out, start, num_written);\n *next_out += num_written;\n }\n }\n *available_out -= num_written;\n BROTLI_LOG_UINT(to_write);\n BROTLI_LOG_UINT(num_written);\n s->partial_pos_out += num_written;\n if (total_out) {\n *total_out = s->partial_pos_out;\n }\n if (num_written < to_write) {\n if (s->ringbuffer_size == (1 << s->window_bits) || force) {\n return BROTLI_DECODER_NEEDS_MORE_OUTPUT;\n } else {\n return BROTLI_DECODER_SUCCESS;\n }\n }\n /* Wrap ring buffer only if it has reached its maximal size. */\n if (s->ringbuffer_size == (1 << s->window_bits) &&\n s->pos >= s->ringbuffer_size) {\n s->pos -= s->ringbuffer_size;\n s->rb_roundtrips++;\n s->should_wrap_ringbuffer = (size_t)s->pos != 0 ? 1 : 0;\n }\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic void BROTLI_NOINLINE WrapRingBuffer(BrotliDecoderState* s) {\n if (s->should_wrap_ringbuffer) {\n memcpy(s->ringbuffer, s->ringbuffer_end, (size_t)s->pos);\n s->should_wrap_ringbuffer = 0;\n }\n}\n\n/* Allocates ring-buffer.\n\n s->ringbuffer_size MUST be updated by BrotliCalculateRingBufferSize before\n this function is called.\n\n Last two bytes of ring-buffer are initialized to 0, so context calculation\n could be done uniformly for the first two and all other positions. */\nstatic BROTLI_BOOL BROTLI_NOINLINE BrotliEnsureRingBuffer(\n BrotliDecoderState* s) {\n uint8_t* old_ringbuffer = s->ringbuffer;\n if (s->ringbuffer_size == s->new_ringbuffer_size) {\n return BROTLI_TRUE;\n }\n\n s->ringbuffer = (uint8_t*)BROTLI_DECODER_ALLOC(s,\n (size_t)(s->new_ringbuffer_size) + kRingBufferWriteAheadSlack);\n if (s->ringbuffer == 0) {\n /* Restore previous value. */\n s->ringbuffer = old_ringbuffer;\n return BROTLI_FALSE;\n }\n s->ringbuffer[s->new_ringbuffer_size - 2] = 0;\n s->ringbuffer[s->new_ringbuffer_size - 1] = 0;\n\n if (!!old_ringbuffer) {\n memcpy(s->ringbuffer, old_ringbuffer, (size_t)s->pos);\n BROTLI_DECODER_FREE(s, old_ringbuffer);\n }\n\n s->ringbuffer_size = s->new_ringbuffer_size;\n s->ringbuffer_mask = s->new_ringbuffer_size - 1;\n s->ringbuffer_end = s->ringbuffer + s->ringbuffer_size;\n\n return BROTLI_TRUE;\n}\n\nstatic BrotliDecoderErrorCode BROTLI_NOINLINE\nSkipMetadataBlock(BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n int nbytes;\n\n if (s->meta_block_remaining_len == 0) {\n return BROTLI_DECODER_SUCCESS;\n }\n\n BROTLI_DCHECK((BrotliGetAvailableBits(br) & 7) == 0);\n\n /* Drain accumulator. */\n if (BrotliGetAvailableBits(br) >= 8) {\n uint8_t buffer[8];\n nbytes = (int)(BrotliGetAvailableBits(br)) >> 3;\n BROTLI_DCHECK(nbytes <= 8);\n if (nbytes > s->meta_block_remaining_len) {\n nbytes = s->meta_block_remaining_len;\n }\n BrotliCopyBytes(buffer, br, (size_t)nbytes);\n if (s->metadata_chunk_func) {\n s->metadata_chunk_func(s->metadata_callback_opaque, buffer,\n (size_t)nbytes);\n }\n s->meta_block_remaining_len -= nbytes;\n if (s->meta_block_remaining_len == 0) {\n return BROTLI_DECODER_SUCCESS;\n }\n }\n\n /* Direct access to metadata is possible. */\n nbytes = (int)BrotliGetRemainingBytes(br);\n if (nbytes > s->meta_block_remaining_len) {\n nbytes = s->meta_block_remaining_len;\n }\n if (nbytes > 0) {\n if (s->metadata_chunk_func) {\n s->metadata_chunk_func(s->metadata_callback_opaque, br->next_in,\n (size_t)nbytes);\n }\n BrotliDropBytes(br, (size_t)nbytes);\n s->meta_block_remaining_len -= nbytes;\n if (s->meta_block_remaining_len == 0) {\n return BROTLI_DECODER_SUCCESS;\n }\n }\n\n BROTLI_DCHECK(BrotliGetRemainingBytes(br) == 0);\n\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n}\n\nstatic BrotliDecoderErrorCode BROTLI_NOINLINE CopyUncompressedBlockToOutput(\n size_t* available_out, uint8_t** next_out, size_t* total_out,\n BrotliDecoderState* s) {\n /* TODO(eustas): avoid allocation for single uncompressed block. */\n if (!BrotliEnsureRingBuffer(s)) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1);\n }\n\n /* State machine */\n for (;;) {\n switch (s->substate_uncompressed) {\n case BROTLI_STATE_UNCOMPRESSED_NONE: {\n int nbytes = (int)BrotliGetRemainingBytes(&s->br);\n if (nbytes > s->meta_block_remaining_len) {\n nbytes = s->meta_block_remaining_len;\n }\n if (s->pos + nbytes > s->ringbuffer_size) {\n nbytes = s->ringbuffer_size - s->pos;\n }\n /* Copy remaining bytes from s->br.buf_ to ring-buffer. */\n BrotliCopyBytes(&s->ringbuffer[s->pos], &s->br, (size_t)nbytes);\n s->pos += nbytes;\n s->meta_block_remaining_len -= nbytes;\n if (s->pos < 1 << s->window_bits) {\n if (s->meta_block_remaining_len == 0) {\n return BROTLI_DECODER_SUCCESS;\n }\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n s->substate_uncompressed = BROTLI_STATE_UNCOMPRESSED_WRITE;\n }\n /* Fall through. */\n\n case BROTLI_STATE_UNCOMPRESSED_WRITE: {\n BrotliDecoderErrorCode result;\n result = WriteRingBuffer(\n s, available_out, next_out, total_out, BROTLI_FALSE);\n if (result != BROTLI_DECODER_SUCCESS) {\n return result;\n }\n if (s->ringbuffer_size == 1 << s->window_bits) {\n s->max_distance = s->max_backward_distance;\n }\n s->substate_uncompressed = BROTLI_STATE_UNCOMPRESSED_NONE;\n break;\n }\n }\n }\n BROTLI_DCHECK(0); /* Unreachable */\n}\n\nstatic BROTLI_BOOL AttachCompoundDictionary(\n BrotliDecoderState* state, const uint8_t* data, size_t size) {\n BrotliDecoderCompoundDictionary* addon = state->compound_dictionary;\n if (state->state != BROTLI_STATE_UNINITED) return BROTLI_FALSE;\n if (!addon) {\n addon = (BrotliDecoderCompoundDictionary*)BROTLI_DECODER_ALLOC(\n state, sizeof(BrotliDecoderCompoundDictionary));\n if (!addon) return BROTLI_FALSE;\n addon->num_chunks = 0;\n addon->total_size = 0;\n addon->br_length = 0;\n addon->br_copied = 0;\n addon->block_bits = -1;\n addon->chunk_offsets[0] = 0;\n state->compound_dictionary = addon;\n }\n if (addon->num_chunks == 15) return BROTLI_FALSE;\n addon->chunks[addon->num_chunks] = data;\n addon->num_chunks++;\n addon->total_size += (int)size;\n addon->chunk_offsets[addon->num_chunks] = addon->total_size;\n return BROTLI_TRUE;\n}\n\nstatic void EnsureCompoundDictionaryInitialized(BrotliDecoderState* state) {\n BrotliDecoderCompoundDictionary* addon = state->compound_dictionary;\n /* 256 = (1 << 8) slots in block map. */\n int block_bits = 8;\n int cursor = 0;\n int index = 0;\n if (addon->block_bits != -1) return;\n while (((addon->total_size - 1) >> block_bits) != 0) block_bits++;\n block_bits -= 8;\n addon->block_bits = block_bits;\n while (cursor < addon->total_size) {\n while (addon->chunk_offsets[index + 1] < cursor) index++;\n addon->block_map[cursor >> block_bits] = (uint8_t)index;\n cursor += 1 << block_bits;\n }\n}\n\nstatic BROTLI_BOOL InitializeCompoundDictionaryCopy(BrotliDecoderState* s,\n int address, int length) {\n BrotliDecoderCompoundDictionary* addon = s->compound_dictionary;\n int index;\n EnsureCompoundDictionaryInitialized(s);\n index = addon->block_map[address >> addon->block_bits];\n while (address >= addon->chunk_offsets[index + 1]) index++;\n if (addon->total_size < address + length) return BROTLI_FALSE;\n /* Update the recent distances cache. */\n s->dist_rb[s->dist_rb_idx & 3] = s->distance_code;\n ++s->dist_rb_idx;\n s->meta_block_remaining_len -= length;\n addon->br_index = index;\n addon->br_offset = address - addon->chunk_offsets[index];\n addon->br_length = length;\n addon->br_copied = 0;\n return BROTLI_TRUE;\n}\n\nstatic int GetCompoundDictionarySize(BrotliDecoderState* s) {\n return s->compound_dictionary ? s->compound_dictionary->total_size : 0;\n}\n\nstatic int CopyFromCompoundDictionary(BrotliDecoderState* s, int pos) {\n BrotliDecoderCompoundDictionary* addon = s->compound_dictionary;\n int orig_pos = pos;\n while (addon->br_length != addon->br_copied) {\n uint8_t* copy_dst = &s->ringbuffer[pos];\n const uint8_t* copy_src =\n addon->chunks[addon->br_index] + addon->br_offset;\n int space = s->ringbuffer_size - pos;\n int rem_chunk_length = (addon->chunk_offsets[addon->br_index + 1] -\n addon->chunk_offsets[addon->br_index]) - addon->br_offset;\n int length = addon->br_length - addon->br_copied;\n if (length > rem_chunk_length) length = rem_chunk_length;\n if (length > space) length = space;\n memcpy(copy_dst, copy_src, (size_t)length);\n pos += length;\n addon->br_offset += length;\n addon->br_copied += length;\n if (length == rem_chunk_length) {\n addon->br_index++;\n addon->br_offset = 0;\n }\n if (pos == s->ringbuffer_size) break;\n }\n return pos - orig_pos;\n}\n\nBROTLI_BOOL BrotliDecoderAttachDictionary(\n BrotliDecoderState* state, BrotliSharedDictionaryType type,\n size_t data_size, const uint8_t data[BROTLI_ARRAY_PARAM(data_size)]) {\n brotli_reg_t i;\n brotli_reg_t num_prefix_before = state->dictionary->num_prefix;\n if (state->state != BROTLI_STATE_UNINITED) return BROTLI_FALSE;\n if (!BrotliSharedDictionaryAttach(state->dictionary, type, data_size, data)) {\n return BROTLI_FALSE;\n }\n for (i = num_prefix_before; i < state->dictionary->num_prefix; i++) {\n if (!AttachCompoundDictionary(\n state, state->dictionary->prefix[i],\n state->dictionary->prefix_size[i])) {\n return BROTLI_FALSE;\n }\n }\n return BROTLI_TRUE;\n}\n\n/* Calculates the smallest feasible ring buffer.\n\n If we know the data size is small, do not allocate more ring buffer\n size than needed to reduce memory usage.\n\n When this method is called, metablock size and flags MUST be decoded. */\nstatic void BROTLI_NOINLINE BrotliCalculateRingBufferSize(\n BrotliDecoderState* s) {\n int window_size = 1 << s->window_bits;\n int new_ringbuffer_size = window_size;\n /* We need at least 2 bytes of ring buffer size to get the last two\n bytes for context from there */\n int min_size = s->ringbuffer_size ? s->ringbuffer_size : 1024;\n int output_size;\n\n /* If maximum is already reached, no further extension is retired. */\n if (s->ringbuffer_size == window_size) {\n return;\n }\n\n /* Metadata blocks does not touch ring buffer. */\n if (s->is_metadata) {\n return;\n }\n\n if (!s->ringbuffer) {\n output_size = 0;\n } else {\n output_size = s->pos;\n }\n output_size += s->meta_block_remaining_len;\n min_size = min_size < output_size ? output_size : min_size;\n\n if (!!s->canny_ringbuffer_allocation) {\n /* Reduce ring buffer size to save memory when server is unscrupulous.\n In worst case memory usage might be 1.5x bigger for a short period of\n ring buffer reallocation. */\n while ((new_ringbuffer_size >> 1) >= min_size) {\n new_ringbuffer_size >>= 1;\n }\n }\n\n s->new_ringbuffer_size = new_ringbuffer_size;\n}\n\n/* Reads 1..256 2-bit context modes. */\nstatic BrotliDecoderErrorCode ReadContextModes(BrotliDecoderState* s) {\n BrotliBitReader* br = &s->br;\n int i = s->loop_counter;\n\n while (i < (int)s->num_block_types[0]) {\n brotli_reg_t bits;\n if (!BrotliSafeReadBits(br, 2, &bits)) {\n s->loop_counter = i;\n return BROTLI_DECODER_NEEDS_MORE_INPUT;\n }\n s->context_modes[i] = (uint8_t)bits;\n BROTLI_LOG_ARRAY_INDEX(s->context_modes, i);\n i++;\n }\n return BROTLI_DECODER_SUCCESS;\n}\n\nstatic BROTLI_INLINE void TakeDistanceFromRingBuffer(BrotliDecoderState* s) {\n int offset = s->distance_code - 3;\n if (s->distance_code <= 3) {\n /* Compensate double distance-ring-buffer roll for dictionary items. */\n s->distance_context = 1 >> s->distance_code;\n s->distance_code = s->dist_rb[(s->dist_rb_idx - offset) & 3];\n s->dist_rb_idx -= s->distance_context;\n } else {\n int index_delta = 3;\n int delta;\n int base = s->distance_code - 10;\n if (s->distance_code < 10) {\n base = s->distance_code - 4;\n } else {\n index_delta = 2;\n }\n /* Unpack one of six 4-bit values. */\n delta = ((0x605142 >> (4 * base)) & 0xF) - 3;\n s->distance_code = s->dist_rb[(s->dist_rb_idx + index_delta) & 0x3] + delta;\n if (s->distance_code <= 0) {\n /* A huge distance will cause a BROTLI_FAILURE() soon.\n This is a little faster than failing here. */\n s->distance_code = 0x7FFFFFFF;\n }\n }\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadBits(\n BrotliBitReader* const br, brotli_reg_t n_bits, brotli_reg_t* val) {\n if (n_bits != 0) {\n return BrotliSafeReadBits(br, n_bits, val);\n } else {\n *val = 0;\n return BROTLI_TRUE;\n }\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadBits32(\n BrotliBitReader* const br, brotli_reg_t n_bits, brotli_reg_t* val) {\n if (n_bits != 0) {\n return BrotliSafeReadBits32(br, n_bits, val);\n } else {\n *val = 0;\n return BROTLI_TRUE;\n }\n}\n\n/*\n RFC 7932 Section 4 with \"...\" shortenings and \"[]\" emendations.\n\n Each distance ... is represented with a pair ...\n The distance code is encoded using a prefix code... The number of extra bits\n can be 0..24... Two additional parameters: NPOSTFIX (0..3), and ...\n NDIRECT (0..120) ... are encoded in the meta-block header...\n\n The first 16 distance symbols ... reference past distances... ring buffer ...\n Next NDIRECT distance symbols ... represent distances from 1 to NDIRECT...\n [For] distance symbols 16 + NDIRECT and greater ... the number of extra bits\n ... is given by the following formula:\n\n [ xcode = dcode - NDIRECT - 16 ]\n ndistbits = 1 + [ xcode ] >> (NPOSTFIX + 1)\n\n ...\n*/\n\n/*\n RFC 7932 Section 9.2 with \"...\" shortenings and \"[]\" emendations.\n\n ... to get the actual value of the parameter NDIRECT, left-shift this\n four-bit number by NPOSTFIX bits ...\n*/\n\n/* Remaining formulas from RFC 7932 Section 4 could be rewritten as following:\n\n alphabet_size = 16 + NDIRECT + (max_distbits << (NPOSTFIX + 1))\n\n half = ((xcode >> NPOSTFIX) & 1) << ndistbits\n postfix = xcode & ((1 << NPOSTFIX) - 1)\n range_start = 2 * (1 << ndistbits - 1 - 1)\n\n distance = (range_start + half + extra) << NPOSTFIX + postfix + NDIRECT + 1\n\n NB: ndistbits >= 1 -> range_start >= 0\n NB: range_start has factor 2, as the range is covered by 2 \"halves\"\n NB: extra -1 offset in range_start formula covers the absence of\n ndistbits = 0 case\n NB: when NPOSTFIX = 0, NDIRECT is not greater than 15\n\n In other words, xcode has the following binary structure - XXXHPPP:\n - XXX represent the number of extra distance bits\n - H selects upper / lower range of distances\n - PPP represent \"postfix\"\n\n \"Regular\" distance encoding has NPOSTFIX = 0; omitting the postfix part\n simplifies distance calculation.\n\n Using NPOSTFIX > 0 allows cheaper encoding of regular structures, e.g. where\n most of distances have the same reminder of division by 2/4/8. For example,\n the table of int32_t values that come from different sources; if it is likely\n that 3 highest bytes of values from the same source are the same, then\n copy distance often looks like 4x + y.\n\n Distance calculation could be rewritten to:\n\n ndistbits = NDISTBITS(NDIRECT, NPOSTFIX)[dcode]\n distance = OFFSET(NDIRECT, NPOSTFIX)[dcode] + extra << NPOSTFIX\n\n NDISTBITS and OFFSET could be pre-calculated, as NDIRECT and NPOSTFIX could\n change only once per meta-block.\n*/\n\n/* Calculates distance lookup table.\n NB: it is possible to have all 64 tables precalculated. */\nstatic void CalculateDistanceLut(BrotliDecoderState* s) {\n BrotliMetablockBodyArena* b = &s->arena.body;\n brotli_reg_t npostfix = s->distance_postfix_bits;\n brotli_reg_t ndirect = s->num_direct_distance_codes;\n brotli_reg_t alphabet_size_limit = s->distance_hgroup.alphabet_size_limit;\n brotli_reg_t postfix = (brotli_reg_t)1u << npostfix;\n brotli_reg_t j;\n brotli_reg_t bits = 1;\n brotli_reg_t half = 0;\n\n /* Skip short codes. */\n brotli_reg_t i = BROTLI_NUM_DISTANCE_SHORT_CODES;\n\n /* Fill direct codes. */\n for (j = 0; j < ndirect; ++j) {\n b->dist_extra_bits[i] = 0;\n b->dist_offset[i] = j + 1;\n ++i;\n }\n\n /* Fill regular distance codes. */\n while (i < alphabet_size_limit) {\n brotli_reg_t base = ndirect + ((((2 + half) << bits) - 4) << npostfix) + 1;\n /* Always fill the complete group. */\n for (j = 0; j < postfix; ++j) {\n b->dist_extra_bits[i] = (uint8_t)bits;\n b->dist_offset[i] = base + j;\n ++i;\n }\n bits = bits + half;\n half = half ^ 1;\n }\n}\n\n/* Precondition: s->distance_code < 0. */\nstatic BROTLI_INLINE BROTLI_BOOL ReadDistanceInternal(\n int safe, BrotliDecoderState* s, BrotliBitReader* br) {\n BrotliMetablockBodyArena* b = &s->arena.body;\n brotli_reg_t code;\n brotli_reg_t bits;\n BrotliBitReaderState memento;\n HuffmanCode* distance_tree = s->distance_hgroup.htrees[s->dist_htree_index];\n if (!safe) {\n code = ReadSymbol(distance_tree, br);\n } else {\n BrotliBitReaderSaveState(br, &memento);\n if (!SafeReadSymbol(distance_tree, br, &code)) {\n return BROTLI_FALSE;\n }\n }\n --s->block_length[2];\n /* Convert the distance code to the actual distance by possibly\n looking up past distances from the s->dist_rb. */\n s->distance_context = 0;\n if ((code & ~0xFu) == 0) {\n s->distance_code = (int)code;\n TakeDistanceFromRingBuffer(s);\n return BROTLI_TRUE;\n }\n if (!safe) {\n bits = BrotliReadBits32(br, b->dist_extra_bits[code]);\n } else {\n if (!SafeReadBits32(br, b->dist_extra_bits[code], &bits)) {\n ++s->block_length[2];\n BrotliBitReaderRestoreState(br, &memento);\n return BROTLI_FALSE;\n }\n }\n s->distance_code =\n (int)(b->dist_offset[code] + (bits << s->distance_postfix_bits));\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_INLINE void ReadDistance(\n BrotliDecoderState* s, BrotliBitReader* br) {\n ReadDistanceInternal(0, s, br);\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadDistance(\n BrotliDecoderState* s, BrotliBitReader* br) {\n return ReadDistanceInternal(1, s, br);\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL ReadCommandInternal(\n int safe, BrotliDecoderState* s, BrotliBitReader* br, int* insert_length) {\n brotli_reg_t cmd_code;\n brotli_reg_t insert_len_extra = 0;\n brotli_reg_t copy_length;\n CmdLutElement v;\n BrotliBitReaderState memento;\n if (!safe) {\n cmd_code = ReadSymbol(s->htree_command, br);\n } else {\n BrotliBitReaderSaveState(br, &memento);\n if (!SafeReadSymbol(s->htree_command, br, &cmd_code)) {\n return BROTLI_FALSE;\n }\n }\n v = kCmdLut[cmd_code];\n s->distance_code = v.distance_code;\n s->distance_context = v.context;\n s->dist_htree_index = s->dist_context_map_slice[s->distance_context];\n *insert_length = v.insert_len_offset;\n if (!safe) {\n if (BROTLI_PREDICT_FALSE(v.insert_len_extra_bits != 0)) {\n insert_len_extra = BrotliReadBits24(br, v.insert_len_extra_bits);\n }\n copy_length = BrotliReadBits24(br, v.copy_len_extra_bits);\n } else {\n if (!SafeReadBits(br, v.insert_len_extra_bits, &insert_len_extra) ||\n !SafeReadBits(br, v.copy_len_extra_bits, ©_length)) {\n BrotliBitReaderRestoreState(br, &memento);\n return BROTLI_FALSE;\n }\n }\n s->copy_length = (int)copy_length + v.copy_len_offset;\n --s->block_length[1];\n *insert_length += (int)insert_len_extra;\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_INLINE void ReadCommand(\n BrotliDecoderState* s, BrotliBitReader* br, int* insert_length) {\n ReadCommandInternal(0, s, br, insert_length);\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SafeReadCommand(\n BrotliDecoderState* s, BrotliBitReader* br, int* insert_length) {\n return ReadCommandInternal(1, s, br, insert_length);\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL CheckInputAmount(\n int safe, BrotliBitReader* const br) {\n if (safe) {\n return BROTLI_TRUE;\n }\n return BrotliCheckInputAmount(br);\n}\n\n/* NB: METHOD should return BROTLI_FALSE only in case there is not enough input;\n in case of \"unsafe\" execution, when input is guaranteed to be sufficient,\n result is ignored. */\n#define BROTLI_SAFE(METHOD) \\\n { \\\n if (safe) { \\\n if (!Safe##METHOD) { \\\n result = BROTLI_DECODER_NEEDS_MORE_INPUT; \\\n goto saveStateAndReturn; \\\n } \\\n } else { \\\n METHOD; \\\n } \\\n }\n\n/* NB: METHOD should return BROTLI_DECODER_SUCCESS, BROTLI_DECODER_ERROR_*, or\n BROTLI_DECODER_NEEDS_MORE_INPUT; the later two break the processing. */\n#define BROTLI_SAFE_WITH_STATUS(METHOD) \\\n { \\\n BrotliDecoderErrorCode status; \\\n if (safe) { \\\n status = Safe##METHOD; \\\n } else { \\\n status = METHOD; \\\n } \\\n if (status != BROTLI_DECODER_SUCCESS) { \\\n result = status; \\\n goto saveStateAndReturn; \\\n } \\\n }\n\nstatic BROTLI_INLINE BrotliDecoderErrorCode ProcessCommandsInternal(\n int safe, BrotliDecoderState* s) {\n int pos = s->pos;\n int i = s->loop_counter;\n BrotliDecoderErrorCode result = BROTLI_DECODER_SUCCESS;\n BrotliBitReader* br = &s->br;\n int compound_dictionary_size = GetCompoundDictionarySize(s);\n\n if (!CheckInputAmount(safe, br)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n if (!safe) {\n BROTLI_UNUSED(BrotliWarmupBitReader(br));\n }\n\n /* Jump into state machine. */\n if (s->state == BROTLI_STATE_COMMAND_BEGIN) {\n goto CommandBegin;\n } else if (s->state == BROTLI_STATE_COMMAND_INNER) {\n goto CommandInner;\n } else if (s->state == BROTLI_STATE_COMMAND_POST_DECODE_LITERALS) {\n goto CommandPostDecodeLiterals;\n } else if (s->state == BROTLI_STATE_COMMAND_POST_WRAP_COPY) {\n goto CommandPostWrapCopy;\n } else {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_UNREACHABLE); /* COV_NF_LINE */\n }\n\nCommandBegin:\n if (safe) {\n s->state = BROTLI_STATE_COMMAND_BEGIN;\n }\n if (!CheckInputAmount(safe, br)) {\n s->state = BROTLI_STATE_COMMAND_BEGIN;\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n if (BROTLI_PREDICT_FALSE(s->block_length[1] == 0)) {\n BROTLI_SAFE_WITH_STATUS(DecodeCommandBlockSwitch(s));\n goto CommandBegin;\n }\n /* Read the insert/copy length in the command. */\n BROTLI_SAFE(ReadCommand(s, br, &i));\n BROTLI_LOG((\"[ProcessCommandsInternal] pos = %d insert = %d copy = %d\\n\",\n pos, i, s->copy_length));\n if (i == 0) {\n goto CommandPostDecodeLiterals;\n }\n s->meta_block_remaining_len -= i;\n\nCommandInner:\n if (safe) {\n s->state = BROTLI_STATE_COMMAND_INNER;\n }\n /* Read the literals in the command. */\n if (s->trivial_literal_context) {\n brotli_reg_t bits;\n brotli_reg_t value;\n PreloadSymbol(safe, s->literal_htree, br, &bits, &value);\n if (!safe) {\n // This is a hottest part of the decode, so we copy the loop below\n // and optimize it by calculating the number of steps where all checks\n // evaluate to false (ringbuffer size/block size/input size).\n // Since all checks are loop invariant, we just need to find\n // minimal number of iterations for a simple loop, and run\n // the full version for the remainder.\n int num_steps = i - 1;\n if (num_steps > 0 && ((brotli_reg_t)(num_steps) > s->block_length[0])) {\n // Safe cast, since block_length < steps\n num_steps = (int)s->block_length[0];\n }\n if (s->ringbuffer_size >= pos &&\n (s->ringbuffer_size - pos) <= num_steps) {\n num_steps = s->ringbuffer_size - pos - 1;\n }\n if (num_steps < 0) {\n num_steps = 0;\n }\n num_steps = BrotliCopyPreloadedSymbolsToU8(s->literal_htree, br, &bits,\n &value, s->ringbuffer, pos,\n num_steps);\n pos += num_steps;\n s->block_length[0] -= (brotli_reg_t)num_steps;\n i -= num_steps;\n do {\n if (!CheckInputAmount(safe, br)) {\n s->state = BROTLI_STATE_COMMAND_INNER;\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n if (BROTLI_PREDICT_FALSE(s->block_length[0] == 0)) {\n goto NextLiteralBlock;\n }\n BrotliCopyPreloadedSymbolsToU8(s->literal_htree, br, &bits, &value,\n s->ringbuffer, pos, 1);\n --s->block_length[0];\n BROTLI_LOG_ARRAY_INDEX(s->ringbuffer, pos);\n ++pos;\n if (BROTLI_PREDICT_FALSE(pos == s->ringbuffer_size)) {\n s->state = BROTLI_STATE_COMMAND_INNER_WRITE;\n --i;\n goto saveStateAndReturn;\n }\n } while (--i != 0);\n } else { /* safe */\n do {\n if (BROTLI_PREDICT_FALSE(s->block_length[0] == 0)) {\n goto NextLiteralBlock;\n }\n brotli_reg_t literal;\n if (!SafeReadSymbol(s->literal_htree, br, &literal)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n s->ringbuffer[pos] = (uint8_t)literal;\n --s->block_length[0];\n BROTLI_LOG_ARRAY_INDEX(s->ringbuffer, pos);\n ++pos;\n if (BROTLI_PREDICT_FALSE(pos == s->ringbuffer_size)) {\n s->state = BROTLI_STATE_COMMAND_INNER_WRITE;\n --i;\n goto saveStateAndReturn;\n }\n } while (--i != 0);\n }\n } else {\n uint8_t p1 = s->ringbuffer[(pos - 1) & s->ringbuffer_mask];\n uint8_t p2 = s->ringbuffer[(pos - 2) & s->ringbuffer_mask];\n do {\n const HuffmanCode* hc;\n uint8_t context;\n if (!CheckInputAmount(safe, br)) {\n s->state = BROTLI_STATE_COMMAND_INNER;\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n if (BROTLI_PREDICT_FALSE(s->block_length[0] == 0)) {\n goto NextLiteralBlock;\n }\n context = BROTLI_CONTEXT(p1, p2, s->context_lookup);\n BROTLI_LOG_UINT(context);\n hc = s->literal_hgroup.htrees[s->context_map_slice[context]];\n p2 = p1;\n if (!safe) {\n p1 = (uint8_t)ReadSymbol(hc, br);\n } else {\n brotli_reg_t literal;\n if (!SafeReadSymbol(hc, br, &literal)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n goto saveStateAndReturn;\n }\n p1 = (uint8_t)literal;\n }\n s->ringbuffer[pos] = p1;\n --s->block_length[0];\n BROTLI_LOG_UINT(s->context_map_slice[context]);\n BROTLI_LOG_ARRAY_INDEX(s->ringbuffer, pos & s->ringbuffer_mask);\n ++pos;\n if (BROTLI_PREDICT_FALSE(pos == s->ringbuffer_size)) {\n s->state = BROTLI_STATE_COMMAND_INNER_WRITE;\n --i;\n goto saveStateAndReturn;\n }\n } while (--i != 0);\n }\n BROTLI_LOG_UINT(s->meta_block_remaining_len);\n if (BROTLI_PREDICT_FALSE(s->meta_block_remaining_len <= 0)) {\n s->state = BROTLI_STATE_METABLOCK_DONE;\n goto saveStateAndReturn;\n }\n\nCommandPostDecodeLiterals:\n if (safe) {\n s->state = BROTLI_STATE_COMMAND_POST_DECODE_LITERALS;\n }\n if (s->distance_code >= 0) {\n /* Implicit distance case. */\n s->distance_context = s->distance_code ? 0 : 1;\n --s->dist_rb_idx;\n s->distance_code = s->dist_rb[s->dist_rb_idx & 3];\n } else {\n /* Read distance code in the command, unless it was implicitly zero. */\n if (BROTLI_PREDICT_FALSE(s->block_length[2] == 0)) {\n BROTLI_SAFE_WITH_STATUS(DecodeDistanceBlockSwitch(s));\n }\n BROTLI_SAFE(ReadDistance(s, br));\n }\n BROTLI_LOG((\"[ProcessCommandsInternal] pos = %d distance = %d\\n\",\n pos, s->distance_code));\n if (s->max_distance != s->max_backward_distance) {\n s->max_distance =\n (pos < s->max_backward_distance) ? pos : s->max_backward_distance;\n }\n i = s->copy_length;\n /* Apply copy of LZ77 back-reference, or static dictionary reference if\n the distance is larger than the max LZ77 distance */\n if (s->distance_code > s->max_distance) {\n /* The maximum allowed distance is BROTLI_MAX_ALLOWED_DISTANCE = 0x7FFFFFFC.\n With this choice, no signed overflow can occur after decoding\n a special distance code (e.g., after adding 3 to the last distance). */\n if (s->distance_code > BROTLI_MAX_ALLOWED_DISTANCE) {\n BROTLI_LOG((\"Invalid backward reference. pos: %d distance: %d \"\n \"len: %d bytes left: %d\\n\",\n pos, s->distance_code, i, s->meta_block_remaining_len));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_DISTANCE);\n }\n if (s->distance_code - s->max_distance - 1 < compound_dictionary_size) {\n int address = compound_dictionary_size -\n (s->distance_code - s->max_distance);\n if (!InitializeCompoundDictionaryCopy(s, address, i)) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_COMPOUND_DICTIONARY);\n }\n pos += CopyFromCompoundDictionary(s, pos);\n if (pos >= s->ringbuffer_size) {\n s->state = BROTLI_STATE_COMMAND_POST_WRITE_1;\n goto saveStateAndReturn;\n }\n } else if (i >= SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH &&\n i <= SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH) {\n uint8_t p1 = s->ringbuffer[(pos - 1) & s->ringbuffer_mask];\n uint8_t p2 = s->ringbuffer[(pos - 2) & s->ringbuffer_mask];\n uint8_t dict_id = s->dictionary->context_based ?\n s->dictionary->context_map[BROTLI_CONTEXT(p1, p2, s->context_lookup)]\n : 0;\n const BrotliDictionary* words = s->dictionary->words[dict_id];\n const BrotliTransforms* transforms = s->dictionary->transforms[dict_id];\n int offset = (int)words->offsets_by_length[i];\n brotli_reg_t shift = words->size_bits_by_length[i];\n int address =\n s->distance_code - s->max_distance - 1 - compound_dictionary_size;\n int mask = (int)BitMask(shift);\n int word_idx = address & mask;\n int transform_idx = address >> shift;\n /* Compensate double distance-ring-buffer roll. */\n s->dist_rb_idx += s->distance_context;\n offset += word_idx * i;\n /* If the distance is out of bound, select a next static dictionary if\n there exist multiple. */\n if ((transform_idx >= (int)transforms->num_transforms ||\n words->size_bits_by_length[i] == 0) &&\n s->dictionary->num_dictionaries > 1) {\n uint8_t dict_id2;\n int dist_remaining = address -\n (int)(((1u << shift) & ~1u)) * (int)transforms->num_transforms;\n for (dict_id2 = 0; dict_id2 < s->dictionary->num_dictionaries;\n dict_id2++) {\n const BrotliDictionary* words2 = s->dictionary->words[dict_id2];\n if (dict_id2 != dict_id && words2->size_bits_by_length[i] != 0) {\n const BrotliTransforms* transforms2 =\n s->dictionary->transforms[dict_id2];\n brotli_reg_t shift2 = words2->size_bits_by_length[i];\n int num = (int)((1u << shift2) & ~1u) *\n (int)transforms2->num_transforms;\n if (dist_remaining < num) {\n dict_id = dict_id2;\n words = words2;\n transforms = transforms2;\n address = dist_remaining;\n shift = shift2;\n mask = (int)BitMask(shift);\n word_idx = address & mask;\n transform_idx = address >> shift;\n offset = (int)words->offsets_by_length[i] + word_idx * i;\n break;\n }\n dist_remaining -= num;\n }\n }\n }\n if (BROTLI_PREDICT_FALSE(words->size_bits_by_length[i] == 0)) {\n BROTLI_LOG((\"Invalid backward reference. pos: %d distance: %d \"\n \"len: %d bytes left: %d\\n\",\n pos, s->distance_code, i, s->meta_block_remaining_len));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_DICTIONARY);\n }\n if (BROTLI_PREDICT_FALSE(!words->data)) {\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET);\n }\n if (transform_idx < (int)transforms->num_transforms) {\n const uint8_t* word = &words->data[offset];\n int len = i;\n if (transform_idx == transforms->cutOffTransforms[0]) {\n memcpy(&s->ringbuffer[pos], word, (size_t)len);\n BROTLI_LOG((\"[ProcessCommandsInternal] dictionary word: [%.*s]\\n\",\n len, word));\n } else {\n len = BrotliTransformDictionaryWord(&s->ringbuffer[pos], word, len,\n transforms, transform_idx);\n BROTLI_LOG((\"[ProcessCommandsInternal] dictionary word: [%.*s],\"\n \" transform_idx = %d, transformed: [%.*s]\\n\",\n i, word, transform_idx, len, &s->ringbuffer[pos]));\n if (len == 0 && s->distance_code <= 120) {\n BROTLI_LOG((\"Invalid length-0 dictionary word after transform\\n\"));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_TRANSFORM);\n }\n }\n pos += len;\n s->meta_block_remaining_len -= len;\n if (pos >= s->ringbuffer_size) {\n s->state = BROTLI_STATE_COMMAND_POST_WRITE_1;\n goto saveStateAndReturn;\n }\n } else {\n BROTLI_LOG((\"Invalid backward reference. pos: %d distance: %d \"\n \"len: %d bytes left: %d\\n\",\n pos, s->distance_code, i, s->meta_block_remaining_len));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_TRANSFORM);\n }\n } else {\n BROTLI_LOG((\"Invalid backward reference. pos: %d distance: %d \"\n \"len: %d bytes left: %d\\n\",\n pos, s->distance_code, i, s->meta_block_remaining_len));\n return BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_DICTIONARY);\n }\n } else {\n int src_start = (pos - s->distance_code) & s->ringbuffer_mask;\n uint8_t* copy_dst = &s->ringbuffer[pos];\n uint8_t* copy_src = &s->ringbuffer[src_start];\n int dst_end = pos + i;\n int src_end = src_start + i;\n /* Update the recent distances cache. */\n s->dist_rb[s->dist_rb_idx & 3] = s->distance_code;\n ++s->dist_rb_idx;\n s->meta_block_remaining_len -= i;\n /* There are 32+ bytes of slack in the ring-buffer allocation.\n Also, we have 16 short codes, that make these 16 bytes irrelevant\n in the ring-buffer. Let's copy over them as a first guess. */\n memmove16(copy_dst, copy_src);\n if (src_end > pos && dst_end > src_start) {\n /* Regions intersect. */\n goto CommandPostWrapCopy;\n }\n if (dst_end >= s->ringbuffer_size || src_end >= s->ringbuffer_size) {\n /* At least one region wraps. */\n goto CommandPostWrapCopy;\n }\n pos += i;\n if (i > 16) {\n if (i > 32) {\n memcpy(copy_dst + 16, copy_src + 16, (size_t)(i - 16));\n } else {\n /* This branch covers about 45% cases.\n Fixed size short copy allows more compiler optimizations. */\n memmove16(copy_dst + 16, copy_src + 16);\n }\n }\n }\n BROTLI_LOG_UINT(s->meta_block_remaining_len);\n if (s->meta_block_remaining_len <= 0) {\n /* Next metablock, if any. */\n s->state = BROTLI_STATE_METABLOCK_DONE;\n goto saveStateAndReturn;\n } else {\n goto CommandBegin;\n }\nCommandPostWrapCopy:\n {\n int wrap_guard = s->ringbuffer_size - pos;\n while (--i >= 0) {\n s->ringbuffer[pos] =\n s->ringbuffer[(pos - s->distance_code) & s->ringbuffer_mask];\n ++pos;\n if (BROTLI_PREDICT_FALSE(--wrap_guard == 0)) {\n s->state = BROTLI_STATE_COMMAND_POST_WRITE_2;\n goto saveStateAndReturn;\n }\n }\n }\n if (s->meta_block_remaining_len <= 0) {\n /* Next metablock, if any. */\n s->state = BROTLI_STATE_METABLOCK_DONE;\n goto saveStateAndReturn;\n } else {\n goto CommandBegin;\n }\n\nNextLiteralBlock:\n BROTLI_SAFE_WITH_STATUS(DecodeLiteralBlockSwitch(s));\n goto CommandInner;\n\nsaveStateAndReturn:\n s->pos = pos;\n s->loop_counter = i;\n return result;\n}\n\n#undef BROTLI_SAFE\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode ProcessCommands(\n BrotliDecoderState* s) {\n return ProcessCommandsInternal(0, s);\n}\n\nstatic BROTLI_NOINLINE BrotliDecoderErrorCode SafeProcessCommands(\n BrotliDecoderState* s) {\n return ProcessCommandsInternal(1, s);\n}\n\nBrotliDecoderResult BrotliDecoderDecompress(\n size_t encoded_size,\n const uint8_t encoded_buffer[BROTLI_ARRAY_PARAM(encoded_size)],\n size_t* decoded_size,\n uint8_t decoded_buffer[BROTLI_ARRAY_PARAM(*decoded_size)]) {\n BrotliDecoderState s;\n BrotliDecoderResult result;\n size_t total_out = 0;\n size_t available_in = encoded_size;\n const uint8_t* next_in = encoded_buffer;\n size_t available_out = *decoded_size;\n uint8_t* next_out = decoded_buffer;\n if (!BrotliDecoderStateInit(&s, 0, 0, 0)) {\n return BROTLI_DECODER_RESULT_ERROR;\n }\n result = BrotliDecoderDecompressStream(\n &s, &available_in, &next_in, &available_out, &next_out, &total_out);\n *decoded_size = total_out;\n BrotliDecoderStateCleanup(&s);\n if (result != BROTLI_DECODER_RESULT_SUCCESS) {\n result = BROTLI_DECODER_RESULT_ERROR;\n }\n return result;\n}\n\n/* Invariant: input stream is never overconsumed:\n - invalid input implies that the whole stream is invalid -> any amount of\n input could be read and discarded\n - when result is \"needs more input\", then at least one more byte is REQUIRED\n to complete decoding; all input data MUST be consumed by decoder, so\n client could swap the input buffer\n - when result is \"needs more output\" decoder MUST ensure that it doesn't\n hold more than 7 bits in bit reader; this saves client from swapping input\n buffer ahead of time\n - when result is \"success\" decoder MUST return all unused data back to input\n buffer; this is possible because the invariant is held on enter */\nBrotliDecoderResult BrotliDecoderDecompressStream(\n BrotliDecoderState* s, size_t* available_in, const uint8_t** next_in,\n size_t* available_out, uint8_t** next_out, size_t* total_out) {\n BrotliDecoderErrorCode result = BROTLI_DECODER_SUCCESS;\n BrotliBitReader* br = &s->br;\n size_t input_size = *available_in;\n#define BROTLI_SAVE_ERROR_CODE(code) \\\n SaveErrorCode(s, (code), input_size - *available_in)\n /* Ensure that |total_out| is set, even if no data will ever be pushed out. */\n if (total_out) {\n *total_out = s->partial_pos_out;\n }\n /* Do not try to process further in a case of unrecoverable error. */\n if ((int)s->error_code < 0) {\n return BROTLI_DECODER_RESULT_ERROR;\n }\n if (*available_out && (!next_out || !*next_out)) {\n return BROTLI_SAVE_ERROR_CODE(\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_INVALID_ARGUMENTS));\n }\n if (!*available_out) next_out = 0;\n if (s->buffer_length == 0) { /* Just connect bit reader to input stream. */\n BrotliBitReaderSetInput(br, *next_in, *available_in);\n } else {\n /* At least one byte of input is required. More than one byte of input may\n be required to complete the transaction -> reading more data must be\n done in a loop -> do it in a main loop. */\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n BrotliBitReaderSetInput(br, &s->buffer.u8[0], s->buffer_length);\n }\n /* State machine */\n for (;;) {\n if (result != BROTLI_DECODER_SUCCESS) {\n /* Error, needs more input/output. */\n if (result == BROTLI_DECODER_NEEDS_MORE_INPUT) {\n if (s->ringbuffer != 0) { /* Pro-actively push output. */\n BrotliDecoderErrorCode intermediate_result = WriteRingBuffer(s,\n available_out, next_out, total_out, BROTLI_TRUE);\n /* WriteRingBuffer checks s->meta_block_remaining_len validity. */\n if ((int)intermediate_result < 0) {\n result = intermediate_result;\n break;\n }\n }\n if (s->buffer_length != 0) { /* Used with internal buffer. */\n if (br->next_in == br->last_in) {\n /* Successfully finished read transaction.\n Accumulator contains less than 8 bits, because internal buffer\n is expanded byte-by-byte until it is enough to complete read. */\n s->buffer_length = 0;\n /* Switch to input stream and restart. */\n result = BROTLI_DECODER_SUCCESS;\n BrotliBitReaderSetInput(br, *next_in, *available_in);\n continue;\n } else if (*available_in != 0) {\n /* Not enough data in buffer, but can take one more byte from\n input stream. */\n result = BROTLI_DECODER_SUCCESS;\n BROTLI_DCHECK(s->buffer_length < 8);\n s->buffer.u8[s->buffer_length] = **next_in;\n s->buffer_length++;\n BrotliBitReaderSetInput(br, &s->buffer.u8[0], s->buffer_length);\n (*next_in)++;\n (*available_in)--;\n /* Retry with more data in buffer. */\n continue;\n }\n /* Can't finish reading and no more input. */\n break;\n } else { /* Input stream doesn't contain enough input. */\n /* Copy tail to internal buffer and return. */\n *next_in = br->next_in;\n *available_in = BrotliBitReaderGetAvailIn(br);\n while (*available_in) {\n s->buffer.u8[s->buffer_length] = **next_in;\n s->buffer_length++;\n (*next_in)++;\n (*available_in)--;\n }\n break;\n }\n /* Unreachable. */\n }\n\n /* Fail or needs more output. */\n\n if (s->buffer_length != 0) {\n /* Just consumed the buffered input and produced some output. Otherwise\n it would result in \"needs more input\". Reset internal buffer. */\n s->buffer_length = 0;\n } else {\n /* Using input stream in last iteration. When decoder switches to input\n stream it has less than 8 bits in accumulator, so it is safe to\n return unused accumulator bits there. */\n BrotliBitReaderUnload(br);\n *available_in = BrotliBitReaderGetAvailIn(br);\n *next_in = br->next_in;\n }\n break;\n }\n switch (s->state) {\n case BROTLI_STATE_UNINITED:\n /* Prepare to the first read. */\n if (!BrotliWarmupBitReader(br)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n break;\n }\n /* Decode window size. */\n result = DecodeWindowBits(s, br); /* Reads 1..8 bits. */\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n if (s->large_window) {\n s->state = BROTLI_STATE_LARGE_WINDOW_BITS;\n break;\n }\n s->state = BROTLI_STATE_INITIALIZE;\n break;\n\n case BROTLI_STATE_LARGE_WINDOW_BITS: {\n brotli_reg_t bits;\n if (!BrotliSafeReadBits(br, 6, &bits)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n break;\n }\n s->window_bits = bits & 63u;\n if (s->window_bits < BROTLI_LARGE_MIN_WBITS ||\n s->window_bits > BROTLI_LARGE_MAX_WBITS) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS);\n break;\n }\n s->state = BROTLI_STATE_INITIALIZE;\n }\n /* Fall through. */\n\n case BROTLI_STATE_INITIALIZE:\n BROTLI_LOG_UINT(s->window_bits);\n /* Maximum distance, see section 9.1. of the spec. */\n s->max_backward_distance = (1 << s->window_bits) - BROTLI_WINDOW_GAP;\n\n /* Allocate memory for both block_type_trees and block_len_trees. */\n s->block_type_trees = (HuffmanCode*)BROTLI_DECODER_ALLOC(s,\n sizeof(HuffmanCode) * 3 *\n (BROTLI_HUFFMAN_MAX_SIZE_258 + BROTLI_HUFFMAN_MAX_SIZE_26));\n if (s->block_type_trees == 0) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES);\n break;\n }\n s->block_len_trees =\n s->block_type_trees + 3 * BROTLI_HUFFMAN_MAX_SIZE_258;\n\n s->state = BROTLI_STATE_METABLOCK_BEGIN;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_BEGIN:\n BrotliDecoderStateMetablockBegin(s);\n BROTLI_LOG_UINT(s->pos);\n s->state = BROTLI_STATE_METABLOCK_HEADER;\n /* Fall through. */\n\n case BROTLI_STATE_METABLOCK_HEADER:\n result = DecodeMetaBlockLength(s, br); /* Reads 2 - 31 bits. */\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n BROTLI_DCHECK(s->meta_block_remaining_len <=\n (int)BROTLI_BLOCK_SIZE_CAP);\n BROTLI_LOG_UINT(s->is_last_metablock);\n BROTLI_LOG_UINT(s->meta_block_remaining_len);\n BROTLI_LOG_UINT(s->is_metadata);\n BROTLI_LOG_UINT(s->is_uncompressed);\n if (s->is_metadata || s->is_uncompressed) {\n if (!BrotliJumpToByteBoundary(br)) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_PADDING_1);\n break;\n }\n }\n if (s->is_metadata) {\n s->state = BROTLI_STATE_METADATA;\n if (s->metadata_start_func) {\n s->metadata_start_func(s->metadata_callback_opaque,\n (size_t)s->meta_block_remaining_len);\n }\n break;\n }\n if (s->meta_block_remaining_len == 0) {\n s->state = BROTLI_STATE_METABLOCK_DONE;\n break;\n }\n BrotliCalculateRingBufferSize(s);\n if (s->is_uncompressed) {\n s->state = BROTLI_STATE_UNCOMPRESSED;\n break;\n }\n s->state = BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_HEADER;\n /* Fall through. */\n\n case BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_HEADER: {\n BrotliMetablockHeaderArena* h = &s->arena.header;\n s->loop_counter = 0;\n /* Initialize compressed metablock header arena. */\n h->sub_loop_counter = 0;\n /* Make small negative indexes addressable. */\n h->symbol_lists =\n &h->symbols_lists_array[BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1];\n h->substate_huffman = BROTLI_STATE_HUFFMAN_NONE;\n h->substate_tree_group = BROTLI_STATE_TREE_GROUP_NONE;\n h->substate_context_map = BROTLI_STATE_CONTEXT_MAP_NONE;\n s->state = BROTLI_STATE_HUFFMAN_CODE_0;\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_CODE_0:\n if (s->loop_counter >= 3) {\n s->state = BROTLI_STATE_METABLOCK_HEADER_2;\n break;\n }\n /* Reads 1..11 bits. */\n result = DecodeVarLenUint8(s, br, &s->num_block_types[s->loop_counter]);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n s->num_block_types[s->loop_counter]++;\n BROTLI_LOG_UINT(s->num_block_types[s->loop_counter]);\n if (s->num_block_types[s->loop_counter] < 2) {\n s->loop_counter++;\n break;\n }\n s->state = BROTLI_STATE_HUFFMAN_CODE_1;\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_CODE_1: {\n brotli_reg_t alphabet_size = s->num_block_types[s->loop_counter] + 2;\n int tree_offset = s->loop_counter * BROTLI_HUFFMAN_MAX_SIZE_258;\n result = ReadHuffmanCode(alphabet_size, alphabet_size,\n &s->block_type_trees[tree_offset], NULL, s);\n if (result != BROTLI_DECODER_SUCCESS) break;\n s->state = BROTLI_STATE_HUFFMAN_CODE_2;\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_CODE_2: {\n brotli_reg_t alphabet_size = BROTLI_NUM_BLOCK_LEN_SYMBOLS;\n int tree_offset = s->loop_counter * BROTLI_HUFFMAN_MAX_SIZE_26;\n result = ReadHuffmanCode(alphabet_size, alphabet_size,\n &s->block_len_trees[tree_offset], NULL, s);\n if (result != BROTLI_DECODER_SUCCESS) break;\n s->state = BROTLI_STATE_HUFFMAN_CODE_3;\n }\n /* Fall through. */\n\n case BROTLI_STATE_HUFFMAN_CODE_3: {\n int tree_offset = s->loop_counter * BROTLI_HUFFMAN_MAX_SIZE_26;\n if (!SafeReadBlockLength(s, &s->block_length[s->loop_counter],\n &s->block_len_trees[tree_offset], br)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n break;\n }\n BROTLI_LOG_UINT(s->block_length[s->loop_counter]);\n s->loop_counter++;\n s->state = BROTLI_STATE_HUFFMAN_CODE_0;\n break;\n }\n\n case BROTLI_STATE_UNCOMPRESSED: {\n result = CopyUncompressedBlockToOutput(\n available_out, next_out, total_out, s);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n s->state = BROTLI_STATE_METABLOCK_DONE;\n break;\n }\n\n case BROTLI_STATE_METADATA:\n result = SkipMetadataBlock(s);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n s->state = BROTLI_STATE_METABLOCK_DONE;\n break;\n\n case BROTLI_STATE_METABLOCK_HEADER_2: {\n brotli_reg_t bits;\n if (!BrotliSafeReadBits(br, 6, &bits)) {\n result = BROTLI_DECODER_NEEDS_MORE_INPUT;\n break;\n }\n s->distance_postfix_bits = bits & BitMask(2);\n bits >>= 2;\n s->num_direct_distance_codes = bits << s->distance_postfix_bits;\n BROTLI_LOG_UINT(s->num_direct_distance_codes);\n BROTLI_LOG_UINT(s->distance_postfix_bits);\n s->context_modes =\n (uint8_t*)BROTLI_DECODER_ALLOC(s, (size_t)s->num_block_types[0]);\n if (s->context_modes == 0) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES);\n break;\n }\n s->loop_counter = 0;\n s->state = BROTLI_STATE_CONTEXT_MODES;\n }\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MODES:\n result = ReadContextModes(s);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n s->state = BROTLI_STATE_CONTEXT_MAP_1;\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_1:\n result = DecodeContextMap(\n s->num_block_types[0] << BROTLI_LITERAL_CONTEXT_BITS,\n &s->num_literal_htrees, &s->context_map, s);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n DetectTrivialLiteralBlockTypes(s);\n s->state = BROTLI_STATE_CONTEXT_MAP_2;\n /* Fall through. */\n\n case BROTLI_STATE_CONTEXT_MAP_2: {\n brotli_reg_t npostfix = s->distance_postfix_bits;\n brotli_reg_t ndirect = s->num_direct_distance_codes;\n brotli_reg_t distance_alphabet_size_max = BROTLI_DISTANCE_ALPHABET_SIZE(\n npostfix, ndirect, BROTLI_MAX_DISTANCE_BITS);\n brotli_reg_t distance_alphabet_size_limit = distance_alphabet_size_max;\n BROTLI_BOOL allocation_success = BROTLI_TRUE;\n if (s->large_window) {\n BrotliDistanceCodeLimit limit = BrotliCalculateDistanceCodeLimit(\n BROTLI_MAX_ALLOWED_DISTANCE, (uint32_t)npostfix,\n (uint32_t)ndirect);\n distance_alphabet_size_max = BROTLI_DISTANCE_ALPHABET_SIZE(\n npostfix, ndirect, BROTLI_LARGE_MAX_DISTANCE_BITS);\n distance_alphabet_size_limit = limit.max_alphabet_size;\n }\n result = DecodeContextMap(\n s->num_block_types[2] << BROTLI_DISTANCE_CONTEXT_BITS,\n &s->num_dist_htrees, &s->dist_context_map, s);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n allocation_success &= BrotliDecoderHuffmanTreeGroupInit(\n s, &s->literal_hgroup, BROTLI_NUM_LITERAL_SYMBOLS,\n BROTLI_NUM_LITERAL_SYMBOLS, s->num_literal_htrees);\n allocation_success &= BrotliDecoderHuffmanTreeGroupInit(\n s, &s->insert_copy_hgroup, BROTLI_NUM_COMMAND_SYMBOLS,\n BROTLI_NUM_COMMAND_SYMBOLS, s->num_block_types[1]);\n allocation_success &= BrotliDecoderHuffmanTreeGroupInit(\n s, &s->distance_hgroup, distance_alphabet_size_max,\n distance_alphabet_size_limit, s->num_dist_htrees);\n if (!allocation_success) {\n return BROTLI_SAVE_ERROR_CODE(\n BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS));\n }\n s->loop_counter = 0;\n s->state = BROTLI_STATE_TREE_GROUP;\n }\n /* Fall through. */\n\n case BROTLI_STATE_TREE_GROUP: {\n HuffmanTreeGroup* hgroup = NULL;\n switch (s->loop_counter) {\n case 0: hgroup = &s->literal_hgroup; break;\n case 1: hgroup = &s->insert_copy_hgroup; break;\n case 2: hgroup = &s->distance_hgroup; break;\n default: return BROTLI_SAVE_ERROR_CODE(BROTLI_FAILURE(\n BROTLI_DECODER_ERROR_UNREACHABLE)); /* COV_NF_LINE */\n }\n result = HuffmanTreeGroupDecode(hgroup, s);\n if (result != BROTLI_DECODER_SUCCESS) break;\n s->loop_counter++;\n if (s->loop_counter < 3) {\n break;\n }\n s->state = BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_BODY;\n }\n /* Fall through. */\n\n case BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_BODY:\n PrepareLiteralDecoding(s);\n s->dist_context_map_slice = s->dist_context_map;\n s->htree_command = s->insert_copy_hgroup.htrees[0];\n if (!BrotliEnsureRingBuffer(s)) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2);\n break;\n }\n CalculateDistanceLut(s);\n s->state = BROTLI_STATE_COMMAND_BEGIN;\n /* Fall through. */\n\n case BROTLI_STATE_COMMAND_BEGIN:\n /* Fall through. */\n case BROTLI_STATE_COMMAND_INNER:\n /* Fall through. */\n case BROTLI_STATE_COMMAND_POST_DECODE_LITERALS:\n /* Fall through. */\n case BROTLI_STATE_COMMAND_POST_WRAP_COPY:\n result = ProcessCommands(s);\n if (result == BROTLI_DECODER_NEEDS_MORE_INPUT) {\n result = SafeProcessCommands(s);\n }\n break;\n\n case BROTLI_STATE_COMMAND_INNER_WRITE:\n /* Fall through. */\n case BROTLI_STATE_COMMAND_POST_WRITE_1:\n /* Fall through. */\n case BROTLI_STATE_COMMAND_POST_WRITE_2:\n result = WriteRingBuffer(\n s, available_out, next_out, total_out, BROTLI_FALSE);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n WrapRingBuffer(s);\n if (s->ringbuffer_size == 1 << s->window_bits) {\n s->max_distance = s->max_backward_distance;\n }\n if (s->state == BROTLI_STATE_COMMAND_POST_WRITE_1) {\n BrotliDecoderCompoundDictionary* addon = s->compound_dictionary;\n if (addon && (addon->br_length != addon->br_copied)) {\n s->pos += CopyFromCompoundDictionary(s, s->pos);\n if (s->pos >= s->ringbuffer_size) continue;\n }\n if (s->meta_block_remaining_len == 0) {\n /* Next metablock, if any. */\n s->state = BROTLI_STATE_METABLOCK_DONE;\n } else {\n s->state = BROTLI_STATE_COMMAND_BEGIN;\n }\n break;\n } else if (s->state == BROTLI_STATE_COMMAND_POST_WRITE_2) {\n s->state = BROTLI_STATE_COMMAND_POST_WRAP_COPY;\n } else { /* BROTLI_STATE_COMMAND_INNER_WRITE */\n if (s->loop_counter == 0) {\n if (s->meta_block_remaining_len == 0) {\n s->state = BROTLI_STATE_METABLOCK_DONE;\n } else {\n s->state = BROTLI_STATE_COMMAND_POST_DECODE_LITERALS;\n }\n break;\n }\n s->state = BROTLI_STATE_COMMAND_INNER;\n }\n break;\n\n case BROTLI_STATE_METABLOCK_DONE:\n if (s->meta_block_remaining_len < 0) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2);\n break;\n }\n BrotliDecoderStateCleanupAfterMetablock(s);\n if (!s->is_last_metablock) {\n s->state = BROTLI_STATE_METABLOCK_BEGIN;\n break;\n }\n if (!BrotliJumpToByteBoundary(br)) {\n result = BROTLI_FAILURE(BROTLI_DECODER_ERROR_FORMAT_PADDING_2);\n break;\n }\n if (s->buffer_length == 0) {\n BrotliBitReaderUnload(br);\n *available_in = BrotliBitReaderGetAvailIn(br);\n *next_in = br->next_in;\n }\n s->state = BROTLI_STATE_DONE;\n /* Fall through. */\n\n case BROTLI_STATE_DONE:\n if (s->ringbuffer != 0) {\n result = WriteRingBuffer(\n s, available_out, next_out, total_out, BROTLI_TRUE);\n if (result != BROTLI_DECODER_SUCCESS) {\n break;\n }\n }\n return BROTLI_SAVE_ERROR_CODE(result);\n }\n }\n return BROTLI_SAVE_ERROR_CODE(result);\n#undef BROTLI_SAVE_ERROR_CODE\n}\n\nBROTLI_BOOL BrotliDecoderHasMoreOutput(const BrotliDecoderState* s) {\n /* After unrecoverable error remaining output is considered nonsensical. */\n if ((int)s->error_code < 0) {\n return BROTLI_FALSE;\n }\n return TO_BROTLI_BOOL(\n s->ringbuffer != 0 && UnwrittenBytes(s, BROTLI_FALSE) != 0);\n}\n\nconst uint8_t* BrotliDecoderTakeOutput(BrotliDecoderState* s, size_t* size) {\n uint8_t* result = 0;\n size_t available_out = *size ? *size : 1u << 24;\n size_t requested_out = available_out;\n BrotliDecoderErrorCode status;\n if ((s->ringbuffer == 0) || ((int)s->error_code < 0)) {\n *size = 0;\n return 0;\n }\n WrapRingBuffer(s);\n status = WriteRingBuffer(s, &available_out, &result, 0, BROTLI_TRUE);\n /* Either WriteRingBuffer returns those \"success\" codes... */\n if (status == BROTLI_DECODER_SUCCESS ||\n status == BROTLI_DECODER_NEEDS_MORE_OUTPUT) {\n *size = requested_out - available_out;\n } else {\n /* ... or stream is broken. Normally this should be caught by\n BrotliDecoderDecompressStream, this is just a safeguard. */\n if ((int)status < 0) SaveErrorCode(s, status, 0);\n *size = 0;\n result = 0;\n }\n return result;\n}\n\nBROTLI_BOOL BrotliDecoderIsUsed(const BrotliDecoderState* s) {\n return TO_BROTLI_BOOL(s->state != BROTLI_STATE_UNINITED ||\n BrotliGetAvailableBits(&s->br) != 0);\n}\n\nBROTLI_BOOL BrotliDecoderIsFinished(const BrotliDecoderState* s) {\n return TO_BROTLI_BOOL(s->state == BROTLI_STATE_DONE) &&\n !BrotliDecoderHasMoreOutput(s);\n}\n\nBrotliDecoderErrorCode BrotliDecoderGetErrorCode(const BrotliDecoderState* s) {\n return (BrotliDecoderErrorCode)s->error_code;\n}\n\nconst char* BrotliDecoderErrorString(BrotliDecoderErrorCode c) {\n switch (c) {\n#define BROTLI_ERROR_CODE_CASE_(PREFIX, NAME, CODE) \\\n case BROTLI_DECODER ## PREFIX ## NAME: return #PREFIX #NAME;\n#define BROTLI_NOTHING_\n BROTLI_DECODER_ERROR_CODES_LIST(BROTLI_ERROR_CODE_CASE_, BROTLI_NOTHING_)\n#undef BROTLI_ERROR_CODE_CASE_\n#undef BROTLI_NOTHING_\n default: return \"INVALID\";\n }\n}\n\nuint32_t BrotliDecoderVersion(void) {\n return BROTLI_VERSION;\n}\n\nvoid BrotliDecoderSetMetadataCallbacks(\n BrotliDecoderState* state,\n brotli_decoder_metadata_start_func start_func,\n brotli_decoder_metadata_chunk_func chunk_func, void* opaque) {\n state->metadata_start_func = start_func;\n state->metadata_chunk_func = chunk_func;\n state->metadata_callback_opaque = opaque;\n}\n\n/* Escalate internal functions visibility; for testing purposes only. */\n#if defined(BROTLI_TEST)\nBROTLI_BOOL BrotliSafeReadSymbolForTest(\n const HuffmanCode*, BrotliBitReader*, brotli_reg_t*);\nBROTLI_BOOL BrotliSafeReadSymbolForTest(\n const HuffmanCode* table, BrotliBitReader* br, brotli_reg_t* result) {\n return SafeReadSymbol(table, br, result);\n}\nvoid BrotliInverseMoveToFrontTransformForTest(\n uint8_t*, brotli_reg_t, BrotliDecoderState*);\nvoid BrotliInverseMoveToFrontTransformForTest(\n uint8_t* v, brotli_reg_t l, BrotliDecoderState* s) {\n InverseMoveToFrontTransform(v, l, s);\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/huffman.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Utilities for building Huffman decoding tables. */\n\n#include \"huffman.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_REVERSE_BITS_MAX 8\n\n#if defined(BROTLI_RBIT)\n#define BROTLI_REVERSE_BITS_BASE \\\n ((sizeof(brotli_reg_t) << 3) - BROTLI_REVERSE_BITS_MAX)\n#else\n#define BROTLI_REVERSE_BITS_BASE 0\nstatic BROTLI_MODEL(\"small\")\nuint8_t kReverseBits[1 << BROTLI_REVERSE_BITS_MAX] = {\n 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,\n 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,\n 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,\n 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,\n 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,\n 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,\n 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,\n 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,\n 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,\n 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,\n 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,\n 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,\n 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,\n 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,\n 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,\n 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,\n 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,\n 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,\n 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,\n 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,\n 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,\n 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,\n 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,\n 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,\n 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,\n 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,\n 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,\n 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,\n 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,\n 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,\n 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,\n 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF\n};\n#endif /* BROTLI_RBIT */\n\n#define BROTLI_REVERSE_BITS_LOWEST \\\n ((brotli_reg_t)1 << (BROTLI_REVERSE_BITS_MAX - 1 + BROTLI_REVERSE_BITS_BASE))\n\n/* Returns reverse(num >> BROTLI_REVERSE_BITS_BASE, BROTLI_REVERSE_BITS_MAX),\n where reverse(value, len) is the bit-wise reversal of the len least\n significant bits of value. */\nstatic BROTLI_INLINE brotli_reg_t BrotliReverseBits(brotli_reg_t num) {\n#if defined(BROTLI_RBIT)\n return BROTLI_RBIT(num);\n#else\n return kReverseBits[num];\n#endif\n}\n\n/* Stores code in table[0], table[step], table[2*step], ..., table[end] */\n/* Assumes that end is an integer multiple of step */\nstatic BROTLI_INLINE void ReplicateValue(HuffmanCode* table,\n int step, int end,\n HuffmanCode code) {\n do {\n end -= step;\n table[end] = code;\n } while (end > 0);\n}\n\n/* Returns the table width of the next 2nd level table. |count| is the histogram\n of bit lengths for the remaining symbols, |len| is the code length of the\n next processed symbol. */\nstatic BROTLI_INLINE int NextTableBitSize(const uint16_t* const count,\n int len, int root_bits) {\n int left = 1 << (len - root_bits);\n while (len < BROTLI_HUFFMAN_MAX_CODE_LENGTH) {\n left -= count[len];\n if (left <= 0) break;\n ++len;\n left <<= 1;\n }\n return len - root_bits;\n}\n\nvoid BrotliBuildCodeLengthsHuffmanTable(HuffmanCode* table,\n const uint8_t* const code_lengths,\n uint16_t* count) {\n HuffmanCode code; /* current table entry */\n int symbol; /* symbol index in original or sorted table */\n brotli_reg_t key; /* prefix code */\n brotli_reg_t key_step; /* prefix code addend */\n int step; /* step size to replicate values in current table */\n int table_size; /* size of current table */\n int sorted[BROTLI_CODE_LENGTH_CODES]; /* symbols sorted by code length */\n /* offsets in sorted table for each length */\n int offset[BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH + 1];\n int bits;\n int bits_count;\n BROTLI_DCHECK(BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH <=\n BROTLI_REVERSE_BITS_MAX);\n BROTLI_DCHECK(BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH == 5);\n\n /* Generate offsets into sorted symbol table by code length. */\n symbol = -1;\n bits = 1;\n /* BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH == 5 */\n BROTLI_REPEAT_5({\n symbol += count[bits];\n offset[bits] = symbol;\n bits++;\n });\n /* Symbols with code length 0 are placed after all other symbols. */\n offset[0] = BROTLI_CODE_LENGTH_CODES - 1;\n\n /* Sort symbols by length, by symbol order within each length. */\n symbol = BROTLI_CODE_LENGTH_CODES;\n do {\n BROTLI_REPEAT_6({\n symbol--;\n sorted[offset[code_lengths[symbol]]--] = symbol;\n });\n } while (symbol != 0);\n\n table_size = 1 << BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH;\n\n /* Special case: all symbols but one have 0 code length. */\n if (offset[0] == 0) {\n code = ConstructHuffmanCode(0, (uint16_t)sorted[0]);\n for (key = 0; key < (brotli_reg_t)table_size; ++key) {\n table[key] = code;\n }\n return;\n }\n\n /* Fill in table. */\n key = 0;\n key_step = BROTLI_REVERSE_BITS_LOWEST;\n symbol = 0;\n bits = 1;\n step = 2;\n do {\n for (bits_count = count[bits]; bits_count != 0; --bits_count) {\n code = ConstructHuffmanCode((uint8_t)bits, (uint16_t)sorted[symbol++]);\n ReplicateValue(&table[BrotliReverseBits(key)], step, table_size, code);\n key += key_step;\n }\n step <<= 1;\n key_step >>= 1;\n } while (++bits <= BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH);\n}\n\nuint32_t BrotliBuildHuffmanTable(HuffmanCode* root_table,\n int root_bits,\n const uint16_t* const symbol_lists,\n uint16_t* count) {\n HuffmanCode code; /* current table entry */\n HuffmanCode* table; /* next available space in table */\n int len; /* current code length */\n int symbol; /* symbol index in original or sorted table */\n brotli_reg_t key; /* prefix code */\n brotli_reg_t key_step; /* prefix code addend */\n brotli_reg_t sub_key; /* 2nd level table prefix code */\n brotli_reg_t sub_key_step; /* 2nd level table prefix code addend */\n int step; /* step size to replicate values in current table */\n int table_bits; /* key length of current table */\n int table_size; /* size of current table */\n int total_size; /* sum of root table size and 2nd level table sizes */\n int max_length = -1;\n int bits;\n int bits_count;\n\n BROTLI_DCHECK(root_bits <= BROTLI_REVERSE_BITS_MAX);\n BROTLI_DCHECK(BROTLI_HUFFMAN_MAX_CODE_LENGTH - root_bits <=\n BROTLI_REVERSE_BITS_MAX);\n\n while (symbol_lists[max_length] == 0xFFFF) max_length--;\n max_length += BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1;\n\n table = root_table;\n table_bits = root_bits;\n table_size = 1 << table_bits;\n total_size = table_size;\n\n /* Fill in the root table. Reduce the table size to if possible,\n and create the repetitions by memcpy. */\n if (table_bits > max_length) {\n table_bits = max_length;\n table_size = 1 << table_bits;\n }\n key = 0;\n key_step = BROTLI_REVERSE_BITS_LOWEST;\n bits = 1;\n step = 2;\n do {\n symbol = bits - (BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1);\n for (bits_count = count[bits]; bits_count != 0; --bits_count) {\n symbol = symbol_lists[symbol];\n code = ConstructHuffmanCode((uint8_t)bits, (uint16_t)symbol);\n ReplicateValue(&table[BrotliReverseBits(key)], step, table_size, code);\n key += key_step;\n }\n step <<= 1;\n key_step >>= 1;\n } while (++bits <= table_bits);\n\n /* If root_bits != table_bits then replicate to fill the remaining slots. */\n while (total_size != table_size) {\n memcpy(&table[table_size], &table[0],\n (size_t)table_size * sizeof(table[0]));\n table_size <<= 1;\n }\n\n /* Fill in 2nd level tables and add pointers to root table. */\n key_step = BROTLI_REVERSE_BITS_LOWEST >> (root_bits - 1);\n sub_key = (BROTLI_REVERSE_BITS_LOWEST << 1);\n sub_key_step = BROTLI_REVERSE_BITS_LOWEST;\n for (len = root_bits + 1, step = 2; len <= max_length; ++len) {\n symbol = len - (BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1);\n for (; count[len] != 0; --count[len]) {\n if (sub_key == (BROTLI_REVERSE_BITS_LOWEST << 1U)) {\n table += table_size;\n table_bits = NextTableBitSize(count, len, root_bits);\n table_size = 1 << table_bits;\n total_size += table_size;\n sub_key = BrotliReverseBits(key);\n key += key_step;\n root_table[sub_key] = ConstructHuffmanCode(\n (uint8_t)(table_bits + root_bits),\n (uint16_t)(((size_t)(table - root_table)) - sub_key));\n sub_key = 0;\n }\n symbol = symbol_lists[symbol];\n code = ConstructHuffmanCode((uint8_t)(len - root_bits), (uint16_t)symbol);\n ReplicateValue(\n &table[BrotliReverseBits(sub_key)], step, table_size, code);\n sub_key += sub_key_step;\n }\n step <<= 1;\n sub_key_step >>= 1;\n }\n return (uint32_t)total_size;\n}\n\nuint32_t BrotliBuildSimpleHuffmanTable(HuffmanCode* table,\n int root_bits,\n uint16_t* val,\n uint32_t num_symbols) {\n uint32_t table_size = 1;\n const uint32_t goal_size = 1U << root_bits;\n switch (num_symbols) {\n case 0:\n table[0] = ConstructHuffmanCode(0, val[0]);\n break;\n case 1:\n if (val[1] > val[0]) {\n table[0] = ConstructHuffmanCode(1, val[0]);\n table[1] = ConstructHuffmanCode(1, val[1]);\n } else {\n table[0] = ConstructHuffmanCode(1, val[1]);\n table[1] = ConstructHuffmanCode(1, val[0]);\n }\n table_size = 2;\n break;\n case 2:\n table[0] = ConstructHuffmanCode(1, val[0]);\n table[2] = ConstructHuffmanCode(1, val[0]);\n if (val[2] > val[1]) {\n table[1] = ConstructHuffmanCode(2, val[1]);\n table[3] = ConstructHuffmanCode(2, val[2]);\n } else {\n table[1] = ConstructHuffmanCode(2, val[2]);\n table[3] = ConstructHuffmanCode(2, val[1]);\n }\n table_size = 4;\n break;\n case 3: {\n int i, k;\n for (i = 0; i < 3; ++i) {\n for (k = i + 1; k < 4; ++k) {\n if (val[k] < val[i]) {\n uint16_t t = val[k];\n val[k] = val[i];\n val[i] = t;\n }\n }\n }\n table[0] = ConstructHuffmanCode(2, val[0]);\n table[2] = ConstructHuffmanCode(2, val[1]);\n table[1] = ConstructHuffmanCode(2, val[2]);\n table[3] = ConstructHuffmanCode(2, val[3]);\n table_size = 4;\n break;\n }\n case 4: {\n if (val[3] < val[2]) {\n uint16_t t = val[3];\n val[3] = val[2];\n val[2] = t;\n }\n table[0] = ConstructHuffmanCode(1, val[0]);\n table[1] = ConstructHuffmanCode(2, val[1]);\n table[2] = ConstructHuffmanCode(1, val[0]);\n table[3] = ConstructHuffmanCode(3, val[2]);\n table[4] = ConstructHuffmanCode(1, val[0]);\n table[5] = ConstructHuffmanCode(2, val[1]);\n table[6] = ConstructHuffmanCode(1, val[0]);\n table[7] = ConstructHuffmanCode(3, val[3]);\n table_size = 8;\n break;\n }\n }\n while (table_size != goal_size) {\n memcpy(&table[table_size], &table[0],\n (size_t)table_size * sizeof(table[0]));\n table_size <<= 1;\n }\n return goal_size;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/huffman.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Utilities for building Huffman decoding tables. */\n\n#ifndef BROTLI_DEC_HUFFMAN_H_\n#define BROTLI_DEC_HUFFMAN_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_HUFFMAN_MAX_CODE_LENGTH 15\n\n/* BROTLI_NUM_BLOCK_LEN_SYMBOLS == 26 */\n#define BROTLI_HUFFMAN_MAX_SIZE_26 396\n/* BROTLI_MAX_BLOCK_TYPE_SYMBOLS == 258 */\n#define BROTLI_HUFFMAN_MAX_SIZE_258 632\n/* BROTLI_MAX_CONTEXT_MAP_SYMBOLS == 272 */\n#define BROTLI_HUFFMAN_MAX_SIZE_272 646\n\n#define BROTLI_HUFFMAN_MAX_CODE_LENGTH_CODE_LENGTH 5\n\n#if ((defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_32)) && \\\n BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0))\n#define BROTLI_HUFFMAN_CODE_FAST_LOAD\n#endif\n\n#if !defined(BROTLI_HUFFMAN_CODE_FAST_LOAD)\n/* Do not create this struct directly - use the ConstructHuffmanCode\n * constructor below! */\ntypedef struct {\n uint8_t bits; /* number of bits used for this symbol */\n uint16_t value; /* symbol value or table offset */\n} HuffmanCode;\n\nstatic BROTLI_INLINE HuffmanCode ConstructHuffmanCode(const uint8_t bits,\n const uint16_t value) {\n HuffmanCode h;\n h.bits = bits;\n h.value = value;\n return h;\n}\n\n/* Please use the following macros to optimize HuffmanCode accesses in hot\n * paths.\n *\n * For example, assuming |table| contains a HuffmanCode pointer:\n *\n * BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(table);\n * BROTLI_HC_ADJUST_TABLE_INDEX(table, index_into_table);\n * *bits = BROTLI_HC_GET_BITS(table);\n * *value = BROTLI_HC_GET_VALUE(table);\n * BROTLI_HC_ADJUST_TABLE_INDEX(table, offset);\n * *bits2 = BROTLI_HC_GET_BITS(table);\n * *value2 = BROTLI_HC_GET_VALUE(table);\n *\n */\n\n#define BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(H)\n#define BROTLI_HC_ADJUST_TABLE_INDEX(H, V) H += (V)\n\n/* These must be given a HuffmanCode pointer! */\n#define BROTLI_HC_FAST_LOAD_BITS(H) (H->bits)\n#define BROTLI_HC_FAST_LOAD_VALUE(H) (H->value)\n\n#else /* BROTLI_HUFFMAN_CODE_FAST_LOAD */\n\ntypedef BROTLI_ALIGNED(4) uint32_t HuffmanCode;\n\nstatic BROTLI_INLINE HuffmanCode ConstructHuffmanCode(const uint8_t bits,\n const uint16_t value) {\n return (HuffmanCode) ((value & 0xFFFF) << 16) | (bits & 0xFF);\n}\n\n#define BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(H) uint32_t __fastload_##H = (*H)\n#define BROTLI_HC_ADJUST_TABLE_INDEX(H, V) H += (V); __fastload_##H = (*H)\n\n/* These must be given a HuffmanCode pointer! */\n#define BROTLI_HC_FAST_LOAD_BITS(H) ((__fastload_##H) & 0xFF)\n#define BROTLI_HC_FAST_LOAD_VALUE(H) ((__fastload_##H) >> 16)\n#endif /* BROTLI_HUFFMAN_CODE_FAST_LOAD */\n\n/* Builds Huffman lookup table assuming code lengths are in symbol order. */\nBROTLI_INTERNAL void BrotliBuildCodeLengthsHuffmanTable(HuffmanCode* root_table,\n const uint8_t* const code_lengths, uint16_t* count);\n\n/* Builds Huffman lookup table assuming code lengths are in symbol order.\n Returns size of resulting table. */\nBROTLI_INTERNAL uint32_t BrotliBuildHuffmanTable(HuffmanCode* root_table,\n int root_bits, const uint16_t* const symbol_lists, uint16_t* count);\n\n/* Builds a simple Huffman table. The |num_symbols| parameter is to be\n interpreted as follows: 0 means 1 symbol, 1 means 2 symbols,\n 2 means 3 symbols, 3 means 4 symbols with lengths [2, 2, 2, 2],\n 4 means 4 symbols with lengths [1, 2, 3, 3]. */\nBROTLI_INTERNAL uint32_t BrotliBuildSimpleHuffmanTable(HuffmanCode* table,\n int root_bits, uint16_t* symbols, uint32_t num_symbols);\n\n/* Contains a collection of Huffman trees with the same alphabet size. */\n/* alphabet_size_limit is needed due to simple codes, since\n log2(alphabet_size_max) could be greater than log2(alphabet_size_limit). */\ntypedef struct {\n HuffmanCode** htrees;\n HuffmanCode* codes;\n uint16_t alphabet_size_max;\n uint16_t alphabet_size_limit;\n uint16_t num_htrees;\n} HuffmanTreeGroup;\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_DEC_HUFFMAN_H_ */\n" }, { "path": "c/dec/prefix.c", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"prefix.h\"\n\n#include \"../common/platform.h\" /* IWYU pragma: keep */\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/constants.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_NONE)\n/* Embed kCmdLut. */\n#include \"prefix_inc.h\"\n#else\nBROTLI_COLD BROTLI_BOOL BrotliDecoderInitCmdLut(CmdLutElement* items) {\n static const uint8_t kInsertLengthExtraBits[24] = {\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03,\n 0x04, 0x04, 0x05, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0C, 0x0E, 0x18};\n static const uint8_t kCopyLengthExtraBits[24] = {\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02,\n 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x18};\n static const uint8_t kCellPos[11] = {0, 1, 0, 1, 8, 9, 2, 16, 10, 17, 18};\n\n uint16_t insert_length_offsets[24];\n uint16_t copy_length_offsets[24];\n insert_length_offsets[0] = 0;\n copy_length_offsets[0] = 2;\n for (size_t i = 0; i < 23; ++i) {\n insert_length_offsets[i + 1] =\n insert_length_offsets[i] + (uint16_t)(1u << kInsertLengthExtraBits[i]);\n copy_length_offsets[i + 1] =\n copy_length_offsets[i] + (uint16_t)(1u << kCopyLengthExtraBits[i]);\n }\n\n for (size_t symbol = 0; symbol < BROTLI_NUM_COMMAND_SYMBOLS; ++symbol) {\n CmdLutElement* item = items + symbol;\n const size_t cell_idx = symbol >> 6;\n const size_t cell_pos = kCellPos[cell_idx];\n const size_t copy_code = ((cell_pos << 3) & 0x18) + (symbol & 0x7);\n const uint16_t copy_len_offset = copy_length_offsets[copy_code];\n const size_t insert_code = (cell_pos & 0x18) + ((symbol >> 3) & 0x7);\n item->copy_len_extra_bits = kCopyLengthExtraBits[copy_code];\n item->context = (copy_len_offset > 4) ? 3 : ((uint8_t)copy_len_offset - 2);\n item->copy_len_offset = copy_len_offset;\n item->distance_code = (cell_idx >= 2) ? -1 : 0;\n item->insert_len_extra_bits = kInsertLengthExtraBits[insert_code];\n item->insert_len_offset = insert_length_offsets[insert_code];\n }\n return BROTLI_TRUE;\n}\n\nBROTLI_MODEL(\"small\")\nCmdLutElement kCmdLut[BROTLI_NUM_COMMAND_SYMBOLS];\n#endif /* BROTLI_STATIC_INIT */\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/prefix.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Lookup tables to map prefix codes to value ranges. This is used during\n decoding of the block lengths, literal insertion lengths and copy lengths. */\n\n#ifndef BROTLI_DEC_PREFIX_H_\n#define BROTLI_DEC_PREFIX_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\" /* IWYU pragma: keep */\n#include \"../common/static_init.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct CmdLutElement {\n uint8_t insert_len_extra_bits;\n uint8_t copy_len_extra_bits;\n int8_t distance_code;\n uint8_t context;\n uint16_t insert_len_offset;\n uint16_t copy_len_offset;\n} CmdLutElement;\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_NONE)\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\n CmdLutElement kCmdLut[BROTLI_NUM_COMMAND_SYMBOLS];\n#else\nBROTLI_INTERNAL BROTLI_BOOL BrotliDecoderInitCmdLut(CmdLutElement* items);\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\")\n CmdLutElement kCmdLut[BROTLI_NUM_COMMAND_SYMBOLS];\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_DEC_PREFIX_H_ */\n" }, { "path": "c/dec/prefix_inc.h", "content": "const BROTLI_MODEL(\"small\")\nCmdLutElement kCmdLut[BROTLI_NUM_COMMAND_SYMBOLS] = {\n { 0x00, 0x00, 0, 0x00, 0x0000, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0000, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0000, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0000, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0000, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0000, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0000, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0000, 0x0009 },\n { 0x00, 0x00, 0, 0x00, 0x0001, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0001, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0001, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0001, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0001, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0001, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0001, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0001, 0x0009 },\n { 0x00, 0x00, 0, 0x00, 0x0002, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0002, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0002, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0002, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0002, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0002, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0002, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0002, 0x0009 },\n { 0x00, 0x00, 0, 0x00, 0x0003, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0003, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0003, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0003, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0003, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0003, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0003, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0003, 0x0009 },\n { 0x00, 0x00, 0, 0x00, 0x0004, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0004, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0004, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0004, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0004, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0004, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0004, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0004, 0x0009 },\n { 0x00, 0x00, 0, 0x00, 0x0005, 0x0002 },\n { 0x00, 0x00, 0, 0x01, 0x0005, 0x0003 },\n { 0x00, 0x00, 0, 0x02, 0x0005, 0x0004 },\n { 0x00, 0x00, 0, 0x03, 0x0005, 0x0005 },\n { 0x00, 0x00, 0, 0x03, 0x0005, 0x0006 },\n { 0x00, 0x00, 0, 0x03, 0x0005, 0x0007 },\n { 0x00, 0x00, 0, 0x03, 0x0005, 0x0008 },\n { 0x00, 0x00, 0, 0x03, 0x0005, 0x0009 },\n { 0x01, 0x00, 0, 0x00, 0x0006, 0x0002 },\n { 0x01, 0x00, 0, 0x01, 0x0006, 0x0003 },\n { 0x01, 0x00, 0, 0x02, 0x0006, 0x0004 },\n { 0x01, 0x00, 0, 0x03, 0x0006, 0x0005 },\n { 0x01, 0x00, 0, 0x03, 0x0006, 0x0006 },\n { 0x01, 0x00, 0, 0x03, 0x0006, 0x0007 },\n { 0x01, 0x00, 0, 0x03, 0x0006, 0x0008 },\n { 0x01, 0x00, 0, 0x03, 0x0006, 0x0009 },\n { 0x01, 0x00, 0, 0x00, 0x0008, 0x0002 },\n { 0x01, 0x00, 0, 0x01, 0x0008, 0x0003 },\n { 0x01, 0x00, 0, 0x02, 0x0008, 0x0004 },\n { 0x01, 0x00, 0, 0x03, 0x0008, 0x0005 },\n { 0x01, 0x00, 0, 0x03, 0x0008, 0x0006 },\n { 0x01, 0x00, 0, 0x03, 0x0008, 0x0007 },\n { 0x01, 0x00, 0, 0x03, 0x0008, 0x0008 },\n { 0x01, 0x00, 0, 0x03, 0x0008, 0x0009 },\n { 0x00, 0x01, 0, 0x03, 0x0000, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0000, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0000, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0000, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0000, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0000, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0000, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0000, 0x0036 },\n { 0x00, 0x01, 0, 0x03, 0x0001, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0001, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0001, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0001, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0001, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0001, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0001, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0001, 0x0036 },\n { 0x00, 0x01, 0, 0x03, 0x0002, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0002, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0002, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0002, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0002, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0002, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0002, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0002, 0x0036 },\n { 0x00, 0x01, 0, 0x03, 0x0003, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0003, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0003, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0003, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0003, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0003, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0003, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0003, 0x0036 },\n { 0x00, 0x01, 0, 0x03, 0x0004, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0004, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0004, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0004, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0004, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0004, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0004, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0004, 0x0036 },\n { 0x00, 0x01, 0, 0x03, 0x0005, 0x000a },\n { 0x00, 0x01, 0, 0x03, 0x0005, 0x000c },\n { 0x00, 0x02, 0, 0x03, 0x0005, 0x000e },\n { 0x00, 0x02, 0, 0x03, 0x0005, 0x0012 },\n { 0x00, 0x03, 0, 0x03, 0x0005, 0x0016 },\n { 0x00, 0x03, 0, 0x03, 0x0005, 0x001e },\n { 0x00, 0x04, 0, 0x03, 0x0005, 0x0026 },\n { 0x00, 0x04, 0, 0x03, 0x0005, 0x0036 },\n { 0x01, 0x01, 0, 0x03, 0x0006, 0x000a },\n { 0x01, 0x01, 0, 0x03, 0x0006, 0x000c },\n { 0x01, 0x02, 0, 0x03, 0x0006, 0x000e },\n { 0x01, 0x02, 0, 0x03, 0x0006, 0x0012 },\n { 0x01, 0x03, 0, 0x03, 0x0006, 0x0016 },\n { 0x01, 0x03, 0, 0x03, 0x0006, 0x001e },\n { 0x01, 0x04, 0, 0x03, 0x0006, 0x0026 },\n { 0x01, 0x04, 0, 0x03, 0x0006, 0x0036 },\n { 0x01, 0x01, 0, 0x03, 0x0008, 0x000a },\n { 0x01, 0x01, 0, 0x03, 0x0008, 0x000c },\n { 0x01, 0x02, 0, 0x03, 0x0008, 0x000e },\n { 0x01, 0x02, 0, 0x03, 0x0008, 0x0012 },\n { 0x01, 0x03, 0, 0x03, 0x0008, 0x0016 },\n { 0x01, 0x03, 0, 0x03, 0x0008, 0x001e },\n { 0x01, 0x04, 0, 0x03, 0x0008, 0x0026 },\n { 0x01, 0x04, 0, 0x03, 0x0008, 0x0036 },\n { 0x00, 0x00, -1, 0x00, 0x0000, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0000, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0000, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0000, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0000, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0000, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0000, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0000, 0x0009 },\n { 0x00, 0x00, -1, 0x00, 0x0001, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0001, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0001, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0001, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0001, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0001, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0001, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0001, 0x0009 },\n { 0x00, 0x00, -1, 0x00, 0x0002, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0002, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0002, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0002, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0002, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0002, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0002, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0002, 0x0009 },\n { 0x00, 0x00, -1, 0x00, 0x0003, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0003, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0003, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0003, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0003, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0003, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0003, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0003, 0x0009 },\n { 0x00, 0x00, -1, 0x00, 0x0004, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0004, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0004, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0004, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0004, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0004, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0004, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0004, 0x0009 },\n { 0x00, 0x00, -1, 0x00, 0x0005, 0x0002 },\n { 0x00, 0x00, -1, 0x01, 0x0005, 0x0003 },\n { 0x00, 0x00, -1, 0x02, 0x0005, 0x0004 },\n { 0x00, 0x00, -1, 0x03, 0x0005, 0x0005 },\n { 0x00, 0x00, -1, 0x03, 0x0005, 0x0006 },\n { 0x00, 0x00, -1, 0x03, 0x0005, 0x0007 },\n { 0x00, 0x00, -1, 0x03, 0x0005, 0x0008 },\n { 0x00, 0x00, -1, 0x03, 0x0005, 0x0009 },\n { 0x01, 0x00, -1, 0x00, 0x0006, 0x0002 },\n { 0x01, 0x00, -1, 0x01, 0x0006, 0x0003 },\n { 0x01, 0x00, -1, 0x02, 0x0006, 0x0004 },\n { 0x01, 0x00, -1, 0x03, 0x0006, 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0x0005 },\n { 0x06, 0x00, -1, 0x03, 0x0082, 0x0006 },\n { 0x06, 0x00, -1, 0x03, 0x0082, 0x0007 },\n { 0x06, 0x00, -1, 0x03, 0x0082, 0x0008 },\n { 0x06, 0x00, -1, 0x03, 0x0082, 0x0009 },\n { 0x07, 0x00, -1, 0x00, 0x00c2, 0x0002 },\n { 0x07, 0x00, -1, 0x01, 0x00c2, 0x0003 },\n { 0x07, 0x00, -1, 0x02, 0x00c2, 0x0004 },\n { 0x07, 0x00, -1, 0x03, 0x00c2, 0x0005 },\n { 0x07, 0x00, -1, 0x03, 0x00c2, 0x0006 },\n { 0x07, 0x00, -1, 0x03, 0x00c2, 0x0007 },\n { 0x07, 0x00, -1, 0x03, 0x00c2, 0x0008 },\n { 0x07, 0x00, -1, 0x03, 0x00c2, 0x0009 },\n { 0x08, 0x00, -1, 0x00, 0x0142, 0x0002 },\n { 0x08, 0x00, -1, 0x01, 0x0142, 0x0003 },\n { 0x08, 0x00, -1, 0x02, 0x0142, 0x0004 },\n { 0x08, 0x00, -1, 0x03, 0x0142, 0x0005 },\n { 0x08, 0x00, -1, 0x03, 0x0142, 0x0006 },\n { 0x08, 0x00, -1, 0x03, 0x0142, 0x0007 },\n { 0x08, 0x00, -1, 0x03, 0x0142, 0x0008 },\n { 0x08, 0x00, -1, 0x03, 0x0142, 0x0009 },\n { 0x09, 0x00, -1, 0x00, 0x0242, 0x0002 },\n { 0x09, 0x00, -1, 0x01, 0x0242, 0x0003 },\n { 0x09, 0x00, -1, 0x02, 0x0242, 0x0004 },\n { 0x09, 0x00, -1, 0x03, 0x0242, 0x0005 },\n { 0x09, 0x00, -1, 0x03, 0x0242, 0x0006 },\n { 0x09, 0x00, -1, 0x03, 0x0242, 0x0007 },\n { 0x09, 0x00, -1, 0x03, 0x0242, 0x0008 },\n { 0x09, 0x00, -1, 0x03, 0x0242, 0x0009 },\n { 0x0a, 0x00, -1, 0x00, 0x0442, 0x0002 },\n { 0x0a, 0x00, -1, 0x01, 0x0442, 0x0003 },\n { 0x0a, 0x00, -1, 0x02, 0x0442, 0x0004 },\n { 0x0a, 0x00, -1, 0x03, 0x0442, 0x0005 },\n { 0x0a, 0x00, -1, 0x03, 0x0442, 0x0006 },\n { 0x0a, 0x00, -1, 0x03, 0x0442, 0x0007 },\n { 0x0a, 0x00, -1, 0x03, 0x0442, 0x0008 },\n { 0x0a, 0x00, -1, 0x03, 0x0442, 0x0009 },\n { 0x0c, 0x00, -1, 0x00, 0x0842, 0x0002 },\n { 0x0c, 0x00, -1, 0x01, 0x0842, 0x0003 },\n { 0x0c, 0x00, -1, 0x02, 0x0842, 0x0004 },\n { 0x0c, 0x00, -1, 0x03, 0x0842, 0x0005 },\n { 0x0c, 0x00, -1, 0x03, 0x0842, 0x0006 },\n { 0x0c, 0x00, -1, 0x03, 0x0842, 0x0007 },\n { 0x0c, 0x00, -1, 0x03, 0x0842, 0x0008 },\n { 0x0c, 0x00, -1, 0x03, 0x0842, 0x0009 },\n { 0x0e, 0x00, -1, 0x00, 0x1842, 0x0002 },\n { 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0x0846 },\n { 0x02, 0x05, -1, 0x03, 0x000e, 0x0046 },\n { 0x02, 0x05, -1, 0x03, 0x000e, 0x0066 },\n { 0x02, 0x06, -1, 0x03, 0x000e, 0x0086 },\n { 0x02, 0x07, -1, 0x03, 0x000e, 0x00c6 },\n { 0x02, 0x08, -1, 0x03, 0x000e, 0x0146 },\n { 0x02, 0x09, -1, 0x03, 0x000e, 0x0246 },\n { 0x02, 0x0a, -1, 0x03, 0x000e, 0x0446 },\n { 0x02, 0x18, -1, 0x03, 0x000e, 0x0846 },\n { 0x03, 0x05, -1, 0x03, 0x0012, 0x0046 },\n { 0x03, 0x05, -1, 0x03, 0x0012, 0x0066 },\n { 0x03, 0x06, -1, 0x03, 0x0012, 0x0086 },\n { 0x03, 0x07, -1, 0x03, 0x0012, 0x00c6 },\n { 0x03, 0x08, -1, 0x03, 0x0012, 0x0146 },\n { 0x03, 0x09, -1, 0x03, 0x0012, 0x0246 },\n { 0x03, 0x0a, -1, 0x03, 0x0012, 0x0446 },\n { 0x03, 0x18, -1, 0x03, 0x0012, 0x0846 },\n { 0x03, 0x05, -1, 0x03, 0x001a, 0x0046 },\n { 0x03, 0x05, -1, 0x03, 0x001a, 0x0066 },\n { 0x03, 0x06, -1, 0x03, 0x001a, 0x0086 },\n { 0x03, 0x07, -1, 0x03, 0x001a, 0x00c6 },\n { 0x03, 0x08, -1, 0x03, 0x001a, 0x0146 },\n { 0x03, 0x09, -1, 0x03, 0x001a, 0x0246 },\n { 0x03, 0x0a, -1, 0x03, 0x001a, 0x0446 },\n { 0x03, 0x18, -1, 0x03, 0x001a, 0x0846 },\n { 0x04, 0x05, -1, 0x03, 0x0022, 0x0046 },\n { 0x04, 0x05, -1, 0x03, 0x0022, 0x0066 },\n { 0x04, 0x06, -1, 0x03, 0x0022, 0x0086 },\n { 0x04, 0x07, -1, 0x03, 0x0022, 0x00c6 },\n { 0x04, 0x08, -1, 0x03, 0x0022, 0x0146 },\n { 0x04, 0x09, -1, 0x03, 0x0022, 0x0246 },\n { 0x04, 0x0a, -1, 0x03, 0x0022, 0x0446 },\n { 0x04, 0x18, -1, 0x03, 0x0022, 0x0846 },\n { 0x04, 0x05, -1, 0x03, 0x0032, 0x0046 },\n { 0x04, 0x05, -1, 0x03, 0x0032, 0x0066 },\n { 0x04, 0x06, -1, 0x03, 0x0032, 0x0086 },\n { 0x04, 0x07, -1, 0x03, 0x0032, 0x00c6 },\n { 0x04, 0x08, -1, 0x03, 0x0032, 0x0146 },\n { 0x04, 0x09, -1, 0x03, 0x0032, 0x0246 },\n { 0x04, 0x0a, -1, 0x03, 0x0032, 0x0446 },\n { 0x04, 0x18, -1, 0x03, 0x0032, 0x0846 },\n { 0x05, 0x05, -1, 0x03, 0x0042, 0x0046 },\n { 0x05, 0x05, -1, 0x03, 0x0042, 0x0066 },\n { 0x05, 0x06, -1, 0x03, 0x0042, 0x0086 },\n { 0x05, 0x07, -1, 0x03, 0x0042, 0x00c6 },\n { 0x05, 0x08, -1, 0x03, 0x0042, 0x0146 },\n { 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0x0012 },\n { 0x07, 0x03, -1, 0x03, 0x00c2, 0x0016 },\n { 0x07, 0x03, -1, 0x03, 0x00c2, 0x001e },\n { 0x07, 0x04, -1, 0x03, 0x00c2, 0x0026 },\n { 0x07, 0x04, -1, 0x03, 0x00c2, 0x0036 },\n { 0x08, 0x01, -1, 0x03, 0x0142, 0x000a },\n { 0x08, 0x01, -1, 0x03, 0x0142, 0x000c },\n { 0x08, 0x02, -1, 0x03, 0x0142, 0x000e },\n { 0x08, 0x02, -1, 0x03, 0x0142, 0x0012 },\n { 0x08, 0x03, -1, 0x03, 0x0142, 0x0016 },\n { 0x08, 0x03, -1, 0x03, 0x0142, 0x001e },\n { 0x08, 0x04, -1, 0x03, 0x0142, 0x0026 },\n { 0x08, 0x04, -1, 0x03, 0x0142, 0x0036 },\n { 0x09, 0x01, -1, 0x03, 0x0242, 0x000a },\n { 0x09, 0x01, -1, 0x03, 0x0242, 0x000c },\n { 0x09, 0x02, -1, 0x03, 0x0242, 0x000e },\n { 0x09, 0x02, -1, 0x03, 0x0242, 0x0012 },\n { 0x09, 0x03, -1, 0x03, 0x0242, 0x0016 },\n { 0x09, 0x03, -1, 0x03, 0x0242, 0x001e },\n { 0x09, 0x04, -1, 0x03, 0x0242, 0x0026 },\n { 0x09, 0x04, -1, 0x03, 0x0242, 0x0036 },\n { 0x0a, 0x01, -1, 0x03, 0x0442, 0x000a },\n { 0x0a, 0x01, -1, 0x03, 0x0442, 0x000c },\n { 0x0a, 0x02, -1, 0x03, 0x0442, 0x000e },\n { 0x0a, 0x02, -1, 0x03, 0x0442, 0x0012 },\n { 0x0a, 0x03, -1, 0x03, 0x0442, 0x0016 },\n { 0x0a, 0x03, -1, 0x03, 0x0442, 0x001e },\n { 0x0a, 0x04, -1, 0x03, 0x0442, 0x0026 },\n { 0x0a, 0x04, -1, 0x03, 0x0442, 0x0036 },\n { 0x0c, 0x01, -1, 0x03, 0x0842, 0x000a },\n { 0x0c, 0x01, -1, 0x03, 0x0842, 0x000c },\n { 0x0c, 0x02, -1, 0x03, 0x0842, 0x000e },\n { 0x0c, 0x02, -1, 0x03, 0x0842, 0x0012 },\n { 0x0c, 0x03, -1, 0x03, 0x0842, 0x0016 },\n { 0x0c, 0x03, -1, 0x03, 0x0842, 0x001e },\n { 0x0c, 0x04, -1, 0x03, 0x0842, 0x0026 },\n { 0x0c, 0x04, -1, 0x03, 0x0842, 0x0036 },\n { 0x0e, 0x01, -1, 0x03, 0x1842, 0x000a },\n { 0x0e, 0x01, -1, 0x03, 0x1842, 0x000c },\n { 0x0e, 0x02, -1, 0x03, 0x1842, 0x000e },\n { 0x0e, 0x02, -1, 0x03, 0x1842, 0x0012 },\n { 0x0e, 0x03, -1, 0x03, 0x1842, 0x0016 },\n { 0x0e, 0x03, -1, 0x03, 0x1842, 0x001e },\n { 0x0e, 0x04, -1, 0x03, 0x1842, 0x0026 },\n { 0x0e, 0x04, -1, 0x03, 0x1842, 0x0036 },\n { 0x18, 0x01, -1, 0x03, 0x5842, 0x000a },\n { 0x18, 0x01, -1, 0x03, 0x5842, 0x000c },\n { 0x18, 0x02, -1, 0x03, 0x5842, 0x000e },\n { 0x18, 0x02, -1, 0x03, 0x5842, 0x0012 },\n { 0x18, 0x03, -1, 0x03, 0x5842, 0x0016 },\n { 0x18, 0x03, -1, 0x03, 0x5842, 0x001e },\n { 0x18, 0x04, -1, 0x03, 0x5842, 0x0026 },\n { 0x18, 0x04, -1, 0x03, 0x5842, 0x0036 },\n { 0x06, 0x05, -1, 0x03, 0x0082, 0x0046 },\n { 0x06, 0x05, -1, 0x03, 0x0082, 0x0066 },\n { 0x06, 0x06, -1, 0x03, 0x0082, 0x0086 },\n { 0x06, 0x07, -1, 0x03, 0x0082, 0x00c6 },\n { 0x06, 0x08, -1, 0x03, 0x0082, 0x0146 },\n { 0x06, 0x09, -1, 0x03, 0x0082, 0x0246 },\n { 0x06, 0x0a, -1, 0x03, 0x0082, 0x0446 },\n { 0x06, 0x18, -1, 0x03, 0x0082, 0x0846 },\n { 0x07, 0x05, -1, 0x03, 0x00c2, 0x0046 },\n { 0x07, 0x05, -1, 0x03, 0x00c2, 0x0066 },\n { 0x07, 0x06, -1, 0x03, 0x00c2, 0x0086 },\n { 0x07, 0x07, -1, 0x03, 0x00c2, 0x00c6 },\n { 0x07, 0x08, -1, 0x03, 0x00c2, 0x0146 },\n { 0x07, 0x09, -1, 0x03, 0x00c2, 0x0246 },\n { 0x07, 0x0a, -1, 0x03, 0x00c2, 0x0446 },\n { 0x07, 0x18, -1, 0x03, 0x00c2, 0x0846 },\n { 0x08, 0x05, -1, 0x03, 0x0142, 0x0046 },\n { 0x08, 0x05, -1, 0x03, 0x0142, 0x0066 },\n { 0x08, 0x06, -1, 0x03, 0x0142, 0x0086 },\n { 0x08, 0x07, -1, 0x03, 0x0142, 0x00c6 },\n { 0x08, 0x08, -1, 0x03, 0x0142, 0x0146 },\n { 0x08, 0x09, -1, 0x03, 0x0142, 0x0246 },\n { 0x08, 0x0a, -1, 0x03, 0x0142, 0x0446 },\n { 0x08, 0x18, -1, 0x03, 0x0142, 0x0846 },\n { 0x09, 0x05, -1, 0x03, 0x0242, 0x0046 },\n { 0x09, 0x05, -1, 0x03, 0x0242, 0x0066 },\n { 0x09, 0x06, -1, 0x03, 0x0242, 0x0086 },\n { 0x09, 0x07, -1, 0x03, 0x0242, 0x00c6 },\n { 0x09, 0x08, -1, 0x03, 0x0242, 0x0146 },\n { 0x09, 0x09, -1, 0x03, 0x0242, 0x0246 },\n { 0x09, 0x0a, -1, 0x03, 0x0242, 0x0446 },\n { 0x09, 0x18, -1, 0x03, 0x0242, 0x0846 },\n { 0x0a, 0x05, -1, 0x03, 0x0442, 0x0046 },\n { 0x0a, 0x05, -1, 0x03, 0x0442, 0x0066 },\n { 0x0a, 0x06, -1, 0x03, 0x0442, 0x0086 },\n { 0x0a, 0x07, -1, 0x03, 0x0442, 0x00c6 },\n { 0x0a, 0x08, -1, 0x03, 0x0442, 0x0146 },\n { 0x0a, 0x09, -1, 0x03, 0x0442, 0x0246 },\n { 0x0a, 0x0a, -1, 0x03, 0x0442, 0x0446 },\n { 0x0a, 0x18, -1, 0x03, 0x0442, 0x0846 },\n { 0x0c, 0x05, -1, 0x03, 0x0842, 0x0046 },\n { 0x0c, 0x05, -1, 0x03, 0x0842, 0x0066 },\n { 0x0c, 0x06, -1, 0x03, 0x0842, 0x0086 },\n { 0x0c, 0x07, -1, 0x03, 0x0842, 0x00c6 },\n { 0x0c, 0x08, -1, 0x03, 0x0842, 0x0146 },\n { 0x0c, 0x09, -1, 0x03, 0x0842, 0x0246 },\n { 0x0c, 0x0a, -1, 0x03, 0x0842, 0x0446 },\n { 0x0c, 0x18, -1, 0x03, 0x0842, 0x0846 },\n { 0x0e, 0x05, -1, 0x03, 0x1842, 0x0046 },\n { 0x0e, 0x05, -1, 0x03, 0x1842, 0x0066 },\n { 0x0e, 0x06, -1, 0x03, 0x1842, 0x0086 },\n { 0x0e, 0x07, -1, 0x03, 0x1842, 0x00c6 },\n { 0x0e, 0x08, -1, 0x03, 0x1842, 0x0146 },\n { 0x0e, 0x09, -1, 0x03, 0x1842, 0x0246 },\n { 0x0e, 0x0a, -1, 0x03, 0x1842, 0x0446 },\n { 0x0e, 0x18, -1, 0x03, 0x1842, 0x0846 },\n { 0x18, 0x05, -1, 0x03, 0x5842, 0x0046 },\n { 0x18, 0x05, -1, 0x03, 0x5842, 0x0066 },\n { 0x18, 0x06, -1, 0x03, 0x5842, 0x0086 },\n { 0x18, 0x07, -1, 0x03, 0x5842, 0x00c6 },\n { 0x18, 0x08, -1, 0x03, 0x5842, 0x0146 },\n { 0x18, 0x09, -1, 0x03, 0x5842, 0x0246 },\n { 0x18, 0x0a, -1, 0x03, 0x5842, 0x0446 },\n { 0x18, 0x18, -1, 0x03, 0x5842, 0x0846 },\n};\n" }, { "path": "c/dec/state.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"state.h\"\n\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \"huffman.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#ifdef BROTLI_REPORTING\n/* When BROTLI_REPORTING is defined extra reporting module have to be linked. */\nvoid BrotliDecoderOnStart(const BrotliDecoderState* s);\nvoid BrotliDecoderOnFinish(const BrotliDecoderState* s);\n#define BROTLI_DECODER_ON_START(s) BrotliDecoderOnStart(s);\n#define BROTLI_DECODER_ON_FINISH(s) BrotliDecoderOnFinish(s);\n#else\n#if !defined(BROTLI_DECODER_ON_START)\n#define BROTLI_DECODER_ON_START(s) (void)(s);\n#endif\n#if !defined(BROTLI_DECODER_ON_FINISH)\n#define BROTLI_DECODER_ON_FINISH(s) (void)(s);\n#endif\n#endif\n\nBROTLI_BOOL BrotliDecoderStateInit(BrotliDecoderState* s,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n BROTLI_DECODER_ON_START(s);\n if (!alloc_func) {\n s->alloc_func = BrotliDefaultAllocFunc;\n s->free_func = BrotliDefaultFreeFunc;\n s->memory_manager_opaque = 0;\n } else {\n s->alloc_func = alloc_func;\n s->free_func = free_func;\n s->memory_manager_opaque = opaque;\n }\n\n s->error_code = 0; /* BROTLI_DECODER_NO_ERROR */\n\n BrotliInitBitReader(&s->br);\n s->state = BROTLI_STATE_UNINITED;\n s->large_window = 0;\n s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE;\n s->substate_uncompressed = BROTLI_STATE_UNCOMPRESSED_NONE;\n s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_NONE;\n s->substate_read_block_length = BROTLI_STATE_READ_BLOCK_LENGTH_NONE;\n\n s->buffer_length = 0;\n s->loop_counter = 0;\n s->pos = 0;\n s->rb_roundtrips = 0;\n s->partial_pos_out = 0;\n s->used_input = 0;\n\n s->block_type_trees = NULL;\n s->block_len_trees = NULL;\n s->ringbuffer = NULL;\n s->ringbuffer_size = 0;\n s->new_ringbuffer_size = 0;\n s->ringbuffer_mask = 0;\n\n s->context_map = NULL;\n s->context_modes = NULL;\n s->dist_context_map = NULL;\n s->context_map_slice = NULL;\n s->dist_context_map_slice = NULL;\n\n s->literal_hgroup.codes = NULL;\n s->literal_hgroup.htrees = NULL;\n s->insert_copy_hgroup.codes = NULL;\n s->insert_copy_hgroup.htrees = NULL;\n s->distance_hgroup.codes = NULL;\n s->distance_hgroup.htrees = NULL;\n\n s->is_last_metablock = 0;\n s->is_uncompressed = 0;\n s->is_metadata = 0;\n s->should_wrap_ringbuffer = 0;\n s->canny_ringbuffer_allocation = 1;\n\n s->window_bits = 0;\n s->max_distance = 0;\n s->dist_rb[0] = 16;\n s->dist_rb[1] = 15;\n s->dist_rb[2] = 11;\n s->dist_rb[3] = 4;\n s->dist_rb_idx = 0;\n s->block_type_trees = NULL;\n s->block_len_trees = NULL;\n\n s->mtf_upper_bound = 63;\n\n s->compound_dictionary = NULL;\n s->dictionary =\n BrotliSharedDictionaryCreateInstance(alloc_func, free_func, opaque);\n if (!s->dictionary) return BROTLI_FALSE;\n\n s->metadata_start_func = NULL;\n s->metadata_chunk_func = NULL;\n s->metadata_callback_opaque = 0;\n\n return BROTLI_TRUE;\n}\n\nvoid BrotliDecoderStateMetablockBegin(BrotliDecoderState* s) {\n s->meta_block_remaining_len = 0;\n s->block_length[0] = BROTLI_BLOCK_SIZE_CAP;\n s->block_length[1] = BROTLI_BLOCK_SIZE_CAP;\n s->block_length[2] = BROTLI_BLOCK_SIZE_CAP;\n s->num_block_types[0] = 1;\n s->num_block_types[1] = 1;\n s->num_block_types[2] = 1;\n s->block_type_rb[0] = 1;\n s->block_type_rb[1] = 0;\n s->block_type_rb[2] = 1;\n s->block_type_rb[3] = 0;\n s->block_type_rb[4] = 1;\n s->block_type_rb[5] = 0;\n s->context_map = NULL;\n s->context_modes = NULL;\n s->dist_context_map = NULL;\n s->context_map_slice = NULL;\n s->literal_htree = NULL;\n s->dist_context_map_slice = NULL;\n s->dist_htree_index = 0;\n s->context_lookup = NULL;\n s->literal_hgroup.codes = NULL;\n s->literal_hgroup.htrees = NULL;\n s->insert_copy_hgroup.codes = NULL;\n s->insert_copy_hgroup.htrees = NULL;\n s->distance_hgroup.codes = NULL;\n s->distance_hgroup.htrees = NULL;\n}\n\nvoid BrotliDecoderStateCleanupAfterMetablock(BrotliDecoderState* s) {\n BROTLI_DECODER_FREE(s, s->context_modes);\n BROTLI_DECODER_FREE(s, s->context_map);\n BROTLI_DECODER_FREE(s, s->dist_context_map);\n BROTLI_DECODER_FREE(s, s->literal_hgroup.htrees);\n BROTLI_DECODER_FREE(s, s->insert_copy_hgroup.htrees);\n BROTLI_DECODER_FREE(s, s->distance_hgroup.htrees);\n}\n\nvoid BrotliDecoderStateCleanup(BrotliDecoderState* s) {\n BrotliDecoderStateCleanupAfterMetablock(s);\n\n BROTLI_DECODER_ON_FINISH(s);\n\n BROTLI_DECODER_FREE(s, s->compound_dictionary);\n BrotliSharedDictionaryDestroyInstance(s->dictionary);\n s->dictionary = NULL;\n BROTLI_DECODER_FREE(s, s->ringbuffer);\n BROTLI_DECODER_FREE(s, s->block_type_trees);\n}\n\nBROTLI_BOOL BrotliDecoderHuffmanTreeGroupInit(BrotliDecoderState* s,\n HuffmanTreeGroup* group, brotli_reg_t alphabet_size_max,\n brotli_reg_t alphabet_size_limit, brotli_reg_t ntrees) {\n /* 376 = 256 (1-st level table) + 4 + 7 + 15 + 31 + 63 (2-nd level mix-tables)\n This number is discovered \"unlimited\" \"enough\" calculator; it is actually\n a wee bigger than required in several cases (especially for alphabets with\n less than 16 symbols). */\n const size_t max_table_size = alphabet_size_limit + 376;\n const size_t code_size = sizeof(HuffmanCode) * ntrees * max_table_size;\n const size_t htree_size = sizeof(HuffmanCode*) * ntrees;\n /* Pointer alignment is, hopefully, wider than sizeof(HuffmanCode). */\n HuffmanCode** p = (HuffmanCode**)BROTLI_DECODER_ALLOC(s,\n code_size + htree_size);\n group->alphabet_size_max = (uint16_t)alphabet_size_max;\n group->alphabet_size_limit = (uint16_t)alphabet_size_limit;\n group->num_htrees = (uint16_t)ntrees;\n group->htrees = p;\n group->codes = p ? (HuffmanCode*)(&p[ntrees]) : NULL;\n return !!p;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/state.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Brotli state for partial streaming decoding. */\n\n#ifndef BROTLI_DEC_STATE_H_\n#define BROTLI_DEC_STATE_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \n#include \n#include \"bit_reader.h\"\n#include \"huffman.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Graphviz diagram that describes state transitions:\n\ndigraph States {\n graph [compound=true]\n concentrate=true\n node [shape=\"box\"]\n\n UNINITED -> {LARGE_WINDOW_BITS -> INITIALIZE}\n subgraph cluster_metablock_workflow {\n style=\"rounded\"\n label=< METABLOCK CYCLE >\n METABLOCK_BEGIN -> METABLOCK_HEADER\n METABLOCK_HEADER:sw -> METADATA\n METABLOCK_HEADER:s -> UNCOMPRESSED\n METABLOCK_HEADER:se -> METABLOCK_DONE:ne\n METADATA:s -> METABLOCK_DONE:w\n UNCOMPRESSED:s -> METABLOCK_DONE:n\n METABLOCK_DONE:e -> METABLOCK_BEGIN:e [constraint=\"false\"]\n }\n INITIALIZE -> METABLOCK_BEGIN\n METABLOCK_DONE -> DONE\n\n subgraph cluster_compressed_metablock {\n style=\"rounded\"\n label=< COMPRESSED METABLOCK >\n\n subgraph cluster_command {\n style=\"rounded\"\n label=< HOT LOOP >\n\n _METABLOCK_DONE_PORT_ [shape=point style=invis]\n\n {\n // Set different shape for nodes returning from \"compressed metablock\".\n node [shape=invhouse]; CMD_INNER CMD_POST_DECODE_LITERALS;\n CMD_POST_WRAP_COPY; CMD_INNER_WRITE; CMD_POST_WRITE_1;\n }\n\n CMD_BEGIN -> CMD_INNER -> CMD_POST_DECODE_LITERALS -> CMD_POST_WRAP_COPY\n\n // IO (\"write\") nodes are not in the hot loop!\n CMD_INNER_WRITE [style=dashed]\n CMD_INNER -> CMD_INNER_WRITE\n CMD_POST_WRITE_1 [style=dashed]\n CMD_POST_DECODE_LITERALS -> CMD_POST_WRITE_1\n CMD_POST_WRITE_2 [style=dashed]\n CMD_POST_WRAP_COPY -> CMD_POST_WRITE_2\n\n CMD_POST_WRITE_1 -> CMD_BEGIN:s [constraint=\"false\"]\n CMD_INNER_WRITE -> {CMD_INNER CMD_POST_DECODE_LITERALS}\n [constraint=\"false\"]\n CMD_BEGIN:ne -> CMD_POST_DECODE_LITERALS [constraint=\"false\"]\n CMD_POST_WRAP_COPY -> CMD_BEGIN [constraint=\"false\"]\n CMD_POST_DECODE_LITERALS -> CMD_BEGIN:ne [constraint=\"false\"]\n CMD_POST_WRITE_2 -> CMD_POST_WRAP_COPY [constraint=\"false\"]\n {rank=same; CMD_BEGIN; CMD_INNER; CMD_POST_DECODE_LITERALS;\n CMD_POST_WRAP_COPY}\n {rank=same; CMD_INNER_WRITE; CMD_POST_WRITE_1; CMD_POST_WRITE_2}\n\n {CMD_INNER CMD_POST_DECODE_LITERALS CMD_POST_WRAP_COPY} ->\n _METABLOCK_DONE_PORT_ [style=invis]\n {CMD_INNER_WRITE CMD_POST_WRITE_1} -> _METABLOCK_DONE_PORT_\n [constraint=\"false\" style=invis]\n }\n\n BEFORE_COMPRESSED_METABLOCK_HEADER:s -> HUFFMAN_CODE_0:n\n HUFFMAN_CODE_0 -> HUFFMAN_CODE_1 -> HUFFMAN_CODE_2 -> HUFFMAN_CODE_3\n HUFFMAN_CODE_0 -> METABLOCK_HEADER_2 -> CONTEXT_MODES -> CONTEXT_MAP_1\n CONTEXT_MAP_1 -> CONTEXT_MAP_2 -> TREE_GROUP\n TREE_GROUP -> BEFORE_COMPRESSED_METABLOCK_BODY:e\n BEFORE_COMPRESSED_METABLOCK_BODY:s -> CMD_BEGIN:n\n\n HUFFMAN_CODE_3:e -> HUFFMAN_CODE_0:ne [constraint=\"false\"]\n {rank=same; HUFFMAN_CODE_0; HUFFMAN_CODE_1; HUFFMAN_CODE_2; HUFFMAN_CODE_3}\n {rank=same; METABLOCK_HEADER_2; CONTEXT_MODES; CONTEXT_MAP_1; CONTEXT_MAP_2;\n TREE_GROUP}\n }\n METABLOCK_HEADER:e -> BEFORE_COMPRESSED_METABLOCK_HEADER:n\n\n _METABLOCK_DONE_PORT_ -> METABLOCK_DONE:se\n [constraint=\"false\" ltail=cluster_command]\n\n UNINITED [shape=Mdiamond];\n DONE [shape=Msquare];\n}\n\n\n */\n\ntypedef enum {\n BROTLI_STATE_UNINITED,\n BROTLI_STATE_LARGE_WINDOW_BITS,\n BROTLI_STATE_INITIALIZE,\n BROTLI_STATE_METABLOCK_BEGIN,\n BROTLI_STATE_METABLOCK_HEADER,\n BROTLI_STATE_METABLOCK_HEADER_2,\n BROTLI_STATE_CONTEXT_MODES,\n BROTLI_STATE_COMMAND_BEGIN,\n BROTLI_STATE_COMMAND_INNER,\n BROTLI_STATE_COMMAND_POST_DECODE_LITERALS,\n BROTLI_STATE_COMMAND_POST_WRAP_COPY,\n BROTLI_STATE_UNCOMPRESSED,\n BROTLI_STATE_METADATA,\n BROTLI_STATE_COMMAND_INNER_WRITE,\n BROTLI_STATE_METABLOCK_DONE,\n BROTLI_STATE_COMMAND_POST_WRITE_1,\n BROTLI_STATE_COMMAND_POST_WRITE_2,\n BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_HEADER,\n BROTLI_STATE_HUFFMAN_CODE_0,\n BROTLI_STATE_HUFFMAN_CODE_1,\n BROTLI_STATE_HUFFMAN_CODE_2,\n BROTLI_STATE_HUFFMAN_CODE_3,\n BROTLI_STATE_CONTEXT_MAP_1,\n BROTLI_STATE_CONTEXT_MAP_2,\n BROTLI_STATE_TREE_GROUP,\n BROTLI_STATE_BEFORE_COMPRESSED_METABLOCK_BODY,\n BROTLI_STATE_DONE\n} BrotliRunningState;\n\ntypedef enum {\n BROTLI_STATE_METABLOCK_HEADER_NONE,\n BROTLI_STATE_METABLOCK_HEADER_EMPTY,\n BROTLI_STATE_METABLOCK_HEADER_NIBBLES,\n BROTLI_STATE_METABLOCK_HEADER_SIZE,\n BROTLI_STATE_METABLOCK_HEADER_UNCOMPRESSED,\n BROTLI_STATE_METABLOCK_HEADER_RESERVED,\n BROTLI_STATE_METABLOCK_HEADER_BYTES,\n BROTLI_STATE_METABLOCK_HEADER_METADATA\n} BrotliRunningMetablockHeaderState;\n\ntypedef enum {\n BROTLI_STATE_UNCOMPRESSED_NONE,\n BROTLI_STATE_UNCOMPRESSED_WRITE\n} BrotliRunningUncompressedState;\n\ntypedef enum {\n BROTLI_STATE_TREE_GROUP_NONE,\n BROTLI_STATE_TREE_GROUP_LOOP\n} BrotliRunningTreeGroupState;\n\ntypedef enum {\n BROTLI_STATE_CONTEXT_MAP_NONE,\n BROTLI_STATE_CONTEXT_MAP_READ_PREFIX,\n BROTLI_STATE_CONTEXT_MAP_HUFFMAN,\n BROTLI_STATE_CONTEXT_MAP_DECODE,\n BROTLI_STATE_CONTEXT_MAP_TRANSFORM\n} BrotliRunningContextMapState;\n\ntypedef enum {\n BROTLI_STATE_HUFFMAN_NONE,\n BROTLI_STATE_HUFFMAN_SIMPLE_SIZE,\n BROTLI_STATE_HUFFMAN_SIMPLE_READ,\n BROTLI_STATE_HUFFMAN_SIMPLE_BUILD,\n BROTLI_STATE_HUFFMAN_COMPLEX,\n BROTLI_STATE_HUFFMAN_LENGTH_SYMBOLS\n} BrotliRunningHuffmanState;\n\ntypedef enum {\n BROTLI_STATE_DECODE_UINT8_NONE,\n BROTLI_STATE_DECODE_UINT8_SHORT,\n BROTLI_STATE_DECODE_UINT8_LONG\n} BrotliRunningDecodeUint8State;\n\ntypedef enum {\n BROTLI_STATE_READ_BLOCK_LENGTH_NONE,\n BROTLI_STATE_READ_BLOCK_LENGTH_SUFFIX\n} BrotliRunningReadBlockLengthState;\n\n/* BrotliDecoderState addon, used for Compound Dictionary functionality. */\ntypedef struct BrotliDecoderCompoundDictionary {\n int num_chunks;\n int total_size;\n int br_index;\n int br_offset;\n int br_length;\n int br_copied;\n const uint8_t* chunks[16];\n int chunk_offsets[16];\n int block_bits;\n uint8_t block_map[256];\n} BrotliDecoderCompoundDictionary;\n\ntypedef struct BrotliMetablockHeaderArena {\n BrotliRunningTreeGroupState substate_tree_group;\n BrotliRunningContextMapState substate_context_map;\n BrotliRunningHuffmanState substate_huffman;\n\n brotli_reg_t sub_loop_counter;\n\n brotli_reg_t repeat_code_len;\n brotli_reg_t prev_code_len;\n\n /* For ReadHuffmanCode. */\n brotli_reg_t symbol;\n brotli_reg_t repeat;\n brotli_reg_t space;\n\n /* Huffman table for \"histograms\". */\n HuffmanCode table[32];\n /* List of heads of symbol chains. */\n uint16_t* symbol_lists;\n /* Storage from symbol_lists. */\n uint16_t symbols_lists_array[BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1 +\n BROTLI_NUM_COMMAND_SYMBOLS];\n /* Tails of symbol chains. */\n int next_symbol[32];\n uint8_t code_length_code_lengths[BROTLI_CODE_LENGTH_CODES];\n /* Population counts for the code lengths. */\n uint16_t code_length_histo[16];\n /* TODO(eustas): +2 bytes padding */\n\n /* For HuffmanTreeGroupDecode. */\n int htree_index;\n HuffmanCode* next;\n\n /* For DecodeContextMap. */\n brotli_reg_t context_index;\n brotli_reg_t max_run_length_prefix;\n brotli_reg_t code;\n HuffmanCode context_map_table[BROTLI_HUFFMAN_MAX_SIZE_272];\n} BrotliMetablockHeaderArena;\n\ntypedef struct BrotliMetablockBodyArena {\n uint8_t dist_extra_bits[544];\n brotli_reg_t dist_offset[544];\n} BrotliMetablockBodyArena;\n\nstruct BrotliDecoderStateStruct {\n BrotliRunningState state;\n\n /* This counter is reused for several disjoint loops. */\n int loop_counter;\n\n BrotliBitReader br;\n\n brotli_alloc_func alloc_func;\n brotli_free_func free_func;\n void* memory_manager_opaque;\n\n /* Temporary storage for remaining input. Brotli stream format is designed in\n a way, that 64 bits are enough to make progress in decoding. */\n union {\n uint64_t u64;\n uint8_t u8[8];\n } buffer;\n brotli_reg_t buffer_length;\n\n int pos;\n int max_backward_distance;\n int max_distance;\n int ringbuffer_size;\n int ringbuffer_mask;\n int dist_rb_idx;\n int dist_rb[4];\n int error_code;\n int meta_block_remaining_len;\n\n uint8_t* ringbuffer;\n uint8_t* ringbuffer_end;\n HuffmanCode* htree_command;\n const uint8_t* context_lookup;\n uint8_t* context_map_slice;\n uint8_t* dist_context_map_slice;\n\n /* This ring buffer holds a few past copy distances that will be used by\n some special distance codes. */\n HuffmanTreeGroup literal_hgroup;\n HuffmanTreeGroup insert_copy_hgroup;\n HuffmanTreeGroup distance_hgroup;\n HuffmanCode* block_type_trees;\n HuffmanCode* block_len_trees;\n /* This is true if the literal context map histogram type always matches the\n block type. It is then not needed to keep the context (faster decoding). */\n int trivial_literal_context;\n /* Distance context is actual after command is decoded and before distance is\n computed. After distance computation it is used as a temporary variable. */\n int distance_context;\n brotli_reg_t block_length[3];\n brotli_reg_t block_length_index;\n brotli_reg_t num_block_types[3];\n brotli_reg_t block_type_rb[6];\n brotli_reg_t distance_postfix_bits;\n brotli_reg_t num_direct_distance_codes;\n brotli_reg_t num_dist_htrees;\n uint8_t* dist_context_map;\n HuffmanCode* literal_htree;\n\n /* For partial write operations. */\n size_t rb_roundtrips; /* how many times we went around the ring-buffer */\n size_t partial_pos_out; /* how much output to the user in total */\n\n /* For InverseMoveToFrontTransform. */\n brotli_reg_t mtf_upper_bound;\n uint32_t mtf[64 + 1];\n\n int copy_length;\n int distance_code;\n\n uint8_t dist_htree_index;\n /* TODO(eustas): +3 bytes padding */\n\n /* Less used attributes are at the end of this struct. */\n\n brotli_decoder_metadata_start_func metadata_start_func;\n brotli_decoder_metadata_chunk_func metadata_chunk_func;\n void* metadata_callback_opaque;\n\n /* For reporting. */\n uint64_t used_input; /* how many bytes of input are consumed */\n\n /* States inside function calls. */\n BrotliRunningMetablockHeaderState substate_metablock_header;\n BrotliRunningUncompressedState substate_uncompressed;\n BrotliRunningDecodeUint8State substate_decode_uint8;\n BrotliRunningReadBlockLengthState substate_read_block_length;\n\n int new_ringbuffer_size;\n /* TODO(eustas): +4 bytes padding */\n\n unsigned int is_last_metablock : 1;\n unsigned int is_uncompressed : 1;\n unsigned int is_metadata : 1;\n unsigned int should_wrap_ringbuffer : 1;\n unsigned int canny_ringbuffer_allocation : 1;\n unsigned int large_window : 1;\n unsigned int window_bits : 6;\n unsigned int size_nibbles : 8;\n /* TODO(eustas): +12 bits padding */\n\n brotli_reg_t num_literal_htrees;\n uint8_t* context_map;\n uint8_t* context_modes;\n\n BrotliSharedDictionary* dictionary;\n BrotliDecoderCompoundDictionary* compound_dictionary;\n\n uint32_t trivial_literal_contexts[8]; /* 256 bits */\n\n union {\n BrotliMetablockHeaderArena header;\n BrotliMetablockBodyArena body;\n } arena;\n};\n\ntypedef struct BrotliDecoderStateStruct BrotliDecoderStateInternal;\n#define BrotliDecoderState BrotliDecoderStateInternal\n\nBROTLI_INTERNAL BROTLI_BOOL BrotliDecoderStateInit(BrotliDecoderState* s,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\nBROTLI_INTERNAL void BrotliDecoderStateCleanup(BrotliDecoderState* s);\nBROTLI_INTERNAL void BrotliDecoderStateMetablockBegin(BrotliDecoderState* s);\nBROTLI_INTERNAL void BrotliDecoderStateCleanupAfterMetablock(\n BrotliDecoderState* s);\nBROTLI_INTERNAL BROTLI_BOOL BrotliDecoderHuffmanTreeGroupInit(\n BrotliDecoderState* s, HuffmanTreeGroup* group,\n brotli_reg_t alphabet_size_max, brotli_reg_t alphabet_size_limit,\n brotli_reg_t ntrees);\n\n#define BROTLI_DECODER_ALLOC(S, L) S->alloc_func(S->memory_manager_opaque, L)\n\n#define BROTLI_DECODER_FREE(S, X) { \\\n S->free_func(S->memory_manager_opaque, X); \\\n X = NULL; \\\n}\n\n/* Literal/Command/Distance block size maximum; same as maximum metablock size;\n used as block size when there is no block switching. */\n#define BROTLI_BLOCK_SIZE_CAP (1U << 24)\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_DEC_STATE_H_ */\n" }, { "path": "c/dec/static_init.c", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"static_init.h\"\n\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/dictionary.h\"\n#include \"prefix.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\nstatic BROTLI_BOOL DoBrotliDecoderStaticInit(void) {\n BROTLI_BOOL ok = BrotliDecoderInitCmdLut(kCmdLut);\n if (!ok) return BROTLI_FALSE;\n return BROTLI_TRUE;\n}\n#endif /* BROTLI_STATIC_INIT_NONE */\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_EARLY)\nstatic BROTLI_BOOL kEarlyInitOk;\nstatic __attribute__((constructor)) void BrotliDecoderStaticInitEarly(void) {\n kEarlyInitOk = DoBrotliDecoderStaticInit();\n}\n#elif (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_LAZY)\nstatic BROTLI_BOOL kLazyInitOk;\nvoid BrotliDecoderLazyStaticInitInner(void) {\n kLazyInitOk = DoBrotliDecoderStaticInit();\n}\n#endif /* BROTLI_STATIC_INIT_EARLY */\n\nBROTLI_BOOL BrotliDecoderEnsureStaticInit(void) {\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_NONE)\n return BROTLI_TRUE;\n#elif (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_EARLY)\n return kEarlyInitOk;\n#else\n return kLazyInitOk;\n#endif\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/dec/static_init.h", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Central point for static initialization. */\n\n#ifndef THIRD_PARTY_BROTLI_DEC_STATIC_INIT_H_\n#define THIRD_PARTY_BROTLI_DEC_STATIC_INIT_H_\n\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_LAZY)\nBROTLI_INTERNAL void BrotliDecoderLazyStaticInitInner(void);\nBROTLI_INTERNAL void BrotliDecoderLazyStaticInit(void);\n#endif /* BROTLI_STATIC_INIT */\n\nBROTLI_INTERNAL BROTLI_BOOL BrotliDecoderEnsureStaticInit(void);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif // THIRD_PARTY_BROTLI_DEC_STATIC_INIT_H_\n" }, { "path": "c/enc/backward_references.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function to find backward reference copies. */\n\n#include \"backward_references.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"compound_dictionary.h\"\n#include \"encoder_dict.h\"\n#include \"hash.h\"\n#include \"params.h\"\n#include \"quality.h\" /* IWYU pragma: keep for inc */\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic BROTLI_INLINE size_t ComputeDistanceCode(size_t distance,\n size_t max_distance,\n const int* dist_cache) {\n if (distance <= max_distance) {\n size_t distance_plus_3 = distance + 3;\n size_t offset0 = distance_plus_3 - (size_t)dist_cache[0];\n size_t offset1 = distance_plus_3 - (size_t)dist_cache[1];\n if (distance == (size_t)dist_cache[0]) {\n return 0;\n } else if (distance == (size_t)dist_cache[1]) {\n return 1;\n } else if (offset0 < 7) {\n return (0x9750468 >> (4 * offset0)) & 0xF;\n } else if (offset1 < 7) {\n return (0xFDB1ACE >> (4 * offset1)) & 0xF;\n } else if (distance == (size_t)dist_cache[2]) {\n return 2;\n } else if (distance == (size_t)dist_cache[3]) {\n return 3;\n }\n }\n return distance + BROTLI_NUM_DISTANCE_SHORT_CODES - 1;\n}\n\n#define EXPAND_CAT(a, b) CAT(a, b)\n#define CAT(a, b) a ## b\n#define FN(X) EXPAND_CAT(X, HASHER())\n#define EXPORT_FN(X) EXPAND_CAT(X, EXPAND_CAT(PREFIX(), HASHER()))\n\n#define PREFIX() N\n#define ENABLE_COMPOUND_DICTIONARY 0\n\n#define HASHER() H2\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H3\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H4\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H5\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H6\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H40\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H41\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H42\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H54\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H35\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H55\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H65\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n#define HASHER() H58\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n\n#define HASHER() H68\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#endif\n\n#undef ENABLE_COMPOUND_DICTIONARY\n#undef PREFIX\n#define PREFIX() D\n#define ENABLE_COMPOUND_DICTIONARY 1\n\n#define HASHER() H3\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H4\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H5\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H6\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H40\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H41\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H42\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H55\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H65\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n#define HASHER() H58\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#define HASHER() H68\n/* NOLINTNEXTLINE(build/include) */\n#include \"backward_references_inc.h\"\n#undef HASHER\n#endif\n\n#undef ENABLE_COMPOUND_DICTIONARY\n#undef PREFIX\n\n#undef EXPORT_FN\n#undef FN\n#undef CAT\n#undef EXPAND_CAT\n\nvoid BrotliCreateBackwardReferences(size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals) {\n if (params->dictionary.compound.num_chunks != 0) {\n switch (params->hasher.type) {\n#define CASE_(N) \\\n case N: \\\n CreateBackwardReferencesDH ## N(num_bytes, \\\n position, ringbuffer, ringbuffer_mask, \\\n literal_context_lut, params, hasher, dist_cache, \\\n last_insert_len, commands, num_commands, num_literals); \\\n return;\n CASE_(3)\n CASE_(4)\n CASE_(5)\n CASE_(6)\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n CASE_(58)\n CASE_(68)\n#endif\n CASE_(40)\n CASE_(41)\n CASE_(42)\n CASE_(55)\n CASE_(65)\n#undef CASE_\n default:\n BROTLI_DCHECK(BROTLI_FALSE);\n break;\n }\n }\n\n switch (params->hasher.type) {\n#define CASE_(N) \\\n case N: \\\n CreateBackwardReferencesNH ## N(num_bytes, \\\n position, ringbuffer, ringbuffer_mask, \\\n literal_context_lut, params, hasher, dist_cache, \\\n last_insert_len, commands, num_commands, num_literals); \\\n return;\n FOR_GENERIC_HASHERS(CASE_)\n#undef CASE_\n default:\n BROTLI_DCHECK(BROTLI_FALSE);\n break;\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/backward_references.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function to find backward reference copies. */\n\n#ifndef BROTLI_ENC_BACKWARD_REFERENCES_H_\n#define BROTLI_ENC_BACKWARD_REFERENCES_H_\n\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"hash.h\"\n#include \"params.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* \"commands\" points to the next output command to write to, \"*num_commands\" is\n initially the total amount of commands output by previous\n CreateBackwardReferences calls, and must be incremented by the amount written\n by this call. */\nBROTLI_INTERNAL void BrotliCreateBackwardReferences(size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_BACKWARD_REFERENCES_H_ */\n" }, { "path": "c/enc/backward_references_hq.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function to find backward reference copies. */\n\n#include \"backward_references_hq.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"compound_dictionary.h\"\n#include \"encoder_dict.h\"\n#include \"fast_log.h\"\n#include \"find_match_length.h\"\n#include \"hash.h\"\n#include \"literal_cost.h\"\n#include \"memory.h\"\n#include \"params.h\"\n#include \"prefix.h\"\n#include \"quality.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* BrotliCalculateDistanceCodeLimit(BROTLI_MAX_ALLOWED_DISTANCE, 3, 120). */\n#define BROTLI_MAX_EFFECTIVE_DISTANCE_ALPHABET_SIZE 544\n\nstatic const float kInfinity = 1.7e38f; /* ~= 2 ^ 127 */\n\nstatic const BROTLI_MODEL(\"small\") uint32_t kDistanceCacheIndex[] = {\n 0, 1, 2, 3, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,\n};\nstatic const BROTLI_MODEL(\"small\") int kDistanceCacheOffset[] = {\n 0, 0, 0, 0, -1, 1, -2, 2, -3, 3, -1, 1, -2, 2, -3, 3\n};\n\nvoid BrotliInitZopfliNodes(ZopfliNode* array, size_t length) {\n ZopfliNode stub;\n size_t i;\n stub.length = 1;\n stub.distance = 0;\n stub.dcode_insert_length = 0;\n stub.u.cost = kInfinity;\n for (i = 0; i < length; ++i) array[i] = stub;\n}\n\nstatic BROTLI_INLINE uint32_t ZopfliNodeCopyLength(const ZopfliNode* self) {\n return self->length & 0x1FFFFFF;\n}\n\nstatic BROTLI_INLINE uint32_t ZopfliNodeLengthCode(const ZopfliNode* self) {\n const uint32_t modifier = self->length >> 25;\n return ZopfliNodeCopyLength(self) + 9u - modifier;\n}\n\nstatic BROTLI_INLINE uint32_t ZopfliNodeCopyDistance(const ZopfliNode* self) {\n return self->distance;\n}\n\nstatic BROTLI_INLINE uint32_t ZopfliNodeDistanceCode(const ZopfliNode* self) {\n const uint32_t short_code = self->dcode_insert_length >> 27;\n return short_code == 0 ?\n ZopfliNodeCopyDistance(self) + BROTLI_NUM_DISTANCE_SHORT_CODES - 1 :\n short_code - 1;\n}\n\nstatic BROTLI_INLINE uint32_t ZopfliNodeCommandLength(const ZopfliNode* self) {\n return ZopfliNodeCopyLength(self) + (self->dcode_insert_length & 0x7FFFFFF);\n}\n\n/* Temporary data for ZopfliCostModelSetFromCommands. */\ntypedef struct ZopfliCostModelArena {\n uint32_t histogram_literal[BROTLI_NUM_LITERAL_SYMBOLS];\n uint32_t histogram_cmd[BROTLI_NUM_COMMAND_SYMBOLS];\n uint32_t histogram_dist[BROTLI_MAX_EFFECTIVE_DISTANCE_ALPHABET_SIZE];\n float cost_literal[BROTLI_NUM_LITERAL_SYMBOLS];\n} ZopfliCostModelArena;\n\n/* Histogram based cost model for zopflification. */\ntypedef struct ZopfliCostModel {\n /* The insert and copy length symbols. */\n float cost_cmd_[BROTLI_NUM_COMMAND_SYMBOLS];\n float* cost_dist_;\n uint32_t distance_histogram_size;\n /* Cumulative costs of literals per position in the stream. */\n float* literal_costs_;\n float min_cost_cmd_;\n size_t num_bytes_;\n\n /* Temporary data. */\n union {\n size_t literal_histograms[3 * 256];\n ZopfliCostModelArena arena;\n };\n} ZopfliCostModel;\n\nstatic void InitZopfliCostModel(\n MemoryManager* m, ZopfliCostModel* self, const BrotliDistanceParams* dist,\n size_t num_bytes) {\n self->num_bytes_ = num_bytes;\n self->literal_costs_ = BROTLI_ALLOC(m, float, num_bytes + 2);\n self->cost_dist_ = BROTLI_ALLOC(m, float, dist->alphabet_size_limit);\n self->distance_histogram_size = dist->alphabet_size_limit;\n if (BROTLI_IS_OOM(m)) return;\n}\n\nstatic void CleanupZopfliCostModel(MemoryManager* m, ZopfliCostModel* self) {\n BROTLI_FREE(m, self->literal_costs_);\n BROTLI_FREE(m, self->cost_dist_);\n}\n\nstatic void SetCost(const uint32_t* histogram, size_t histogram_size,\n BROTLI_BOOL literal_histogram, float* cost) {\n size_t sum = 0;\n size_t missing_symbol_sum;\n float log2sum;\n float missing_symbol_cost;\n size_t i;\n for (i = 0; i < histogram_size; i++) {\n sum += histogram[i];\n }\n log2sum = (float)FastLog2(sum);\n missing_symbol_sum = sum;\n if (!literal_histogram) {\n for (i = 0; i < histogram_size; i++) {\n if (histogram[i] == 0) missing_symbol_sum++;\n }\n }\n missing_symbol_cost = (float)FastLog2(missing_symbol_sum) + 2;\n for (i = 0; i < histogram_size; i++) {\n if (histogram[i] == 0) {\n cost[i] = missing_symbol_cost;\n continue;\n }\n\n /* Shannon bits for this symbol. */\n cost[i] = log2sum - (float)FastLog2(histogram[i]);\n\n /* Cannot be coded with less than 1 bit */\n if (cost[i] < 1) cost[i] = 1;\n }\n}\n\nstatic void ZopfliCostModelSetFromCommands(ZopfliCostModel* self,\n size_t position,\n const uint8_t* ringbuffer,\n size_t ringbuffer_mask,\n const Command* commands,\n size_t num_commands,\n size_t last_insert_len) {\n ZopfliCostModelArena* arena = &self->arena;\n size_t pos = position - last_insert_len;\n float min_cost_cmd = kInfinity;\n size_t i;\n float* cost_cmd = self->cost_cmd_;\n\n memset(arena->histogram_literal, 0, sizeof(arena->histogram_literal));\n memset(arena->histogram_cmd, 0, sizeof(arena->histogram_cmd));\n memset(arena->histogram_dist, 0, sizeof(arena->histogram_dist));\n\n for (i = 0; i < num_commands; i++) {\n size_t inslength = commands[i].insert_len_;\n size_t copylength = CommandCopyLen(&commands[i]);\n size_t distcode = commands[i].dist_prefix_ & 0x3FF;\n size_t cmdcode = commands[i].cmd_prefix_;\n size_t j;\n\n arena->histogram_cmd[cmdcode]++;\n if (cmdcode >= 128) arena->histogram_dist[distcode]++;\n\n for (j = 0; j < inslength; j++) {\n arena->histogram_literal[ringbuffer[(pos + j) & ringbuffer_mask]]++;\n }\n\n pos += inslength + copylength;\n }\n\n SetCost(arena->histogram_literal, BROTLI_NUM_LITERAL_SYMBOLS, BROTLI_TRUE,\n arena->cost_literal);\n SetCost(arena->histogram_cmd, BROTLI_NUM_COMMAND_SYMBOLS, BROTLI_FALSE,\n cost_cmd);\n SetCost(arena->histogram_dist, self->distance_histogram_size, BROTLI_FALSE,\n self->cost_dist_);\n\n for (i = 0; i < BROTLI_NUM_COMMAND_SYMBOLS; ++i) {\n min_cost_cmd = BROTLI_MIN(float, min_cost_cmd, cost_cmd[i]);\n }\n self->min_cost_cmd_ = min_cost_cmd;\n\n {\n float* literal_costs = self->literal_costs_;\n float literal_carry = 0.0;\n size_t num_bytes = self->num_bytes_;\n literal_costs[0] = 0.0;\n for (i = 0; i < num_bytes; ++i) {\n literal_carry +=\n arena->cost_literal[ringbuffer[(position + i) & ringbuffer_mask]];\n literal_costs[i + 1] = literal_costs[i] + literal_carry;\n literal_carry -= literal_costs[i + 1] - literal_costs[i];\n }\n }\n}\n\nstatic void ZopfliCostModelSetFromLiteralCosts(ZopfliCostModel* self,\n size_t position,\n const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n float* literal_costs = self->literal_costs_;\n float literal_carry = 0.0;\n float* cost_dist = self->cost_dist_;\n float* cost_cmd = self->cost_cmd_;\n size_t num_bytes = self->num_bytes_;\n size_t i;\n BrotliEstimateBitCostsForLiterals(position, num_bytes, ringbuffer_mask,\n ringbuffer, self->literal_histograms,\n &literal_costs[1]);\n literal_costs[0] = 0.0;\n for (i = 0; i < num_bytes; ++i) {\n literal_carry += literal_costs[i + 1];\n literal_costs[i + 1] = literal_costs[i] + literal_carry;\n literal_carry -= literal_costs[i + 1] - literal_costs[i];\n }\n for (i = 0; i < BROTLI_NUM_COMMAND_SYMBOLS; ++i) {\n cost_cmd[i] = (float)FastLog2(11 + (uint32_t)i);\n }\n for (i = 0; i < self->distance_histogram_size; ++i) {\n cost_dist[i] = (float)FastLog2(20 + (uint32_t)i);\n }\n self->min_cost_cmd_ = (float)FastLog2(11);\n}\n\nstatic BROTLI_INLINE float ZopfliCostModelGetCommandCost(\n const ZopfliCostModel* self, uint16_t cmdcode) {\n return self->cost_cmd_[cmdcode];\n}\n\nstatic BROTLI_INLINE float ZopfliCostModelGetDistanceCost(\n const ZopfliCostModel* self, size_t distcode) {\n return self->cost_dist_[distcode];\n}\n\nstatic BROTLI_INLINE float ZopfliCostModelGetLiteralCosts(\n const ZopfliCostModel* self, size_t from, size_t to) {\n return self->literal_costs_[to] - self->literal_costs_[from];\n}\n\nstatic BROTLI_INLINE float ZopfliCostModelGetMinCostCmd(\n const ZopfliCostModel* self) {\n return self->min_cost_cmd_;\n}\n\n/* REQUIRES: len >= 2, start_pos <= pos */\n/* REQUIRES: cost < kInfinity, nodes[start_pos].cost < kInfinity */\n/* Maintains the \"ZopfliNode array invariant\". */\nstatic BROTLI_INLINE void UpdateZopfliNode(ZopfliNode* nodes, size_t pos,\n size_t start_pos, size_t len, size_t len_code, size_t dist,\n size_t short_code, float cost) {\n ZopfliNode* next = &nodes[pos + len];\n next->length = (uint32_t)(len | ((len + 9u - len_code) << 25));\n next->distance = (uint32_t)dist;\n next->dcode_insert_length = (uint32_t)(\n (short_code << 27) | (pos - start_pos));\n next->u.cost = cost;\n}\n\ntypedef struct PosData {\n size_t pos;\n int distance_cache[4];\n float costdiff;\n float cost;\n} PosData;\n\n/* Maintains the smallest 8 cost difference together with their positions */\ntypedef struct StartPosQueue {\n PosData q_[8];\n size_t idx_;\n} StartPosQueue;\n\nstatic BROTLI_INLINE void InitStartPosQueue(StartPosQueue* self) {\n self->idx_ = 0;\n}\n\nstatic size_t StartPosQueueSize(const StartPosQueue* self) {\n return BROTLI_MIN(size_t, self->idx_, 8);\n}\n\nstatic void StartPosQueuePush(StartPosQueue* self, const PosData* posdata) {\n size_t offset = ~(self->idx_++) & 7;\n size_t len = StartPosQueueSize(self);\n size_t i;\n PosData* q = self->q_;\n q[offset] = *posdata;\n /* Restore the sorted order. In the list of |len| items at most |len - 1|\n adjacent element comparisons / swaps are required. */\n for (i = 1; i < len; ++i) {\n if (q[offset & 7].costdiff > q[(offset + 1) & 7].costdiff) {\n BROTLI_SWAP(PosData, q, offset & 7, (offset + 1) & 7);\n }\n ++offset;\n }\n}\n\nstatic const PosData* StartPosQueueAt(const StartPosQueue* self, size_t k) {\n return &self->q_[(k - self->idx_) & 7];\n}\n\n/* Returns the minimum possible copy length that can improve the cost of any */\n/* future position. */\nstatic size_t ComputeMinimumCopyLength(const float start_cost,\n const ZopfliNode* nodes,\n const size_t num_bytes,\n const size_t pos) {\n /* Compute the minimum possible cost of reaching any future position. */\n float min_cost = start_cost;\n size_t len = 2;\n size_t next_len_bucket = 4;\n size_t next_len_offset = 10;\n while (pos + len <= num_bytes && nodes[pos + len].u.cost <= min_cost) {\n /* We already reached (pos + len) with no more cost than the minimum\n possible cost of reaching anything from this pos, so there is no point in\n looking for lengths <= len. */\n ++len;\n if (len == next_len_offset) {\n /* We reached the next copy length code bucket, so we add one more\n extra bit to the minimum cost. */\n min_cost += 1.0f;\n next_len_offset += next_len_bucket;\n next_len_bucket *= 2;\n }\n }\n return len;\n}\n\n/* REQUIRES: nodes[pos].cost < kInfinity\n REQUIRES: nodes[0..pos] satisfies that \"ZopfliNode array invariant\". */\nstatic uint32_t ComputeDistanceShortcut(const size_t block_start,\n const size_t pos,\n const size_t max_backward_limit,\n const size_t gap,\n const ZopfliNode* nodes) {\n const size_t c_len = ZopfliNodeCopyLength(&nodes[pos]);\n const size_t i_len = nodes[pos].dcode_insert_length & 0x7FFFFFF;\n const size_t dist = ZopfliNodeCopyDistance(&nodes[pos]);\n /* Since |block_start + pos| is the end position of the command, the copy part\n starts from |block_start + pos - c_len|. Distances that are greater than\n this or greater than |max_backward_limit| + |gap| are static dictionary\n references, and do not update the last distances.\n Also distance code 0 (last distance) does not update the last distances. */\n if (pos == 0) {\n return 0;\n } else if (dist + c_len <= block_start + pos + gap &&\n dist <= max_backward_limit + gap &&\n ZopfliNodeDistanceCode(&nodes[pos]) > 0) {\n return (uint32_t)pos;\n } else {\n return nodes[pos - c_len - i_len].u.shortcut;\n }\n}\n\n/* Fills in dist_cache[0..3] with the last four distances (as defined by\n Section 4. of the Spec) that would be used at (block_start + pos) if we\n used the shortest path of commands from block_start, computed from\n nodes[0..pos]. The last four distances at block_start are in\n starting_dist_cache[0..3].\n REQUIRES: nodes[pos].cost < kInfinity\n REQUIRES: nodes[0..pos] satisfies that \"ZopfliNode array invariant\". */\nstatic void ComputeDistanceCache(const size_t pos,\n const int* starting_dist_cache,\n const ZopfliNode* nodes,\n int* dist_cache) {\n int idx = 0;\n size_t p = nodes[pos].u.shortcut;\n while (idx < 4 && p > 0) {\n const size_t i_len = nodes[p].dcode_insert_length & 0x7FFFFFF;\n const size_t c_len = ZopfliNodeCopyLength(&nodes[p]);\n const size_t dist = ZopfliNodeCopyDistance(&nodes[p]);\n dist_cache[idx++] = (int)dist;\n /* Because of prerequisite, p >= c_len + i_len >= 2. */\n p = nodes[p - c_len - i_len].u.shortcut;\n }\n for (; idx < 4; ++idx) {\n dist_cache[idx] = *starting_dist_cache++;\n }\n}\n\n/* Maintains \"ZopfliNode array invariant\" and pushes node to the queue, if it\n is eligible. */\nstatic void EvaluateNode(\n const size_t block_start, const size_t pos, const size_t max_backward_limit,\n const size_t gap, const int* starting_dist_cache,\n const ZopfliCostModel* model, StartPosQueue* queue, ZopfliNode* nodes) {\n /* Save cost, because ComputeDistanceCache invalidates it. */\n float node_cost = nodes[pos].u.cost;\n nodes[pos].u.shortcut = ComputeDistanceShortcut(\n block_start, pos, max_backward_limit, gap, nodes);\n if (node_cost <= ZopfliCostModelGetLiteralCosts(model, 0, pos)) {\n PosData posdata;\n posdata.pos = pos;\n posdata.cost = node_cost;\n posdata.costdiff = node_cost -\n ZopfliCostModelGetLiteralCosts(model, 0, pos);\n ComputeDistanceCache(\n pos, starting_dist_cache, nodes, posdata.distance_cache);\n StartPosQueuePush(queue, &posdata);\n }\n}\n\n/* Returns longest copy length. */\nstatic size_t UpdateNodes(\n const size_t num_bytes, const size_t block_start, const size_t pos,\n const uint8_t* ringbuffer, const size_t ringbuffer_mask,\n const BrotliEncoderParams* params, const size_t max_backward_limit,\n const int* starting_dist_cache, const size_t num_matches,\n const BackwardMatch* matches, const ZopfliCostModel* model,\n StartPosQueue* queue, ZopfliNode* nodes) {\n const size_t stream_offset = params->stream_offset;\n const size_t cur_ix = block_start + pos;\n const size_t cur_ix_masked = cur_ix & ringbuffer_mask;\n const size_t max_distance = BROTLI_MIN(size_t, cur_ix, max_backward_limit);\n const size_t dictionary_start = BROTLI_MIN(size_t,\n cur_ix + stream_offset, max_backward_limit);\n const size_t max_len = num_bytes - pos;\n const size_t max_zopfli_len = MaxZopfliLen(params);\n const size_t max_iters = MaxZopfliCandidates(params);\n size_t min_len;\n size_t result = 0;\n size_t k;\n const CompoundDictionary* addon = ¶ms->dictionary.compound;\n size_t gap = addon->total_size;\n\n BROTLI_DCHECK(cur_ix_masked + max_len <= ringbuffer_mask + 1);\n\n EvaluateNode(block_start + stream_offset, pos, max_backward_limit, gap,\n starting_dist_cache, model, queue, nodes);\n\n {\n const PosData* posdata = StartPosQueueAt(queue, 0);\n float min_cost = (posdata->cost + ZopfliCostModelGetMinCostCmd(model) +\n ZopfliCostModelGetLiteralCosts(model, posdata->pos, pos));\n min_len = ComputeMinimumCopyLength(min_cost, nodes, num_bytes, pos);\n }\n\n /* Go over the command starting positions in order of increasing cost\n difference. */\n for (k = 0; k < max_iters && k < StartPosQueueSize(queue); ++k) {\n const PosData* posdata = StartPosQueueAt(queue, k);\n const size_t start = posdata->pos;\n const uint16_t inscode = GetInsertLengthCode(pos - start);\n const float start_costdiff = posdata->costdiff;\n const float base_cost = start_costdiff + (float)GetInsertExtra(inscode) +\n ZopfliCostModelGetLiteralCosts(model, 0, pos);\n\n /* Look for last distance matches using the distance cache from this\n starting position. */\n size_t best_len = min_len - 1;\n size_t j = 0;\n for (; j < BROTLI_NUM_DISTANCE_SHORT_CODES && best_len < max_len; ++j) {\n const size_t idx = kDistanceCacheIndex[j];\n const size_t backward =\n (size_t)(posdata->distance_cache[idx] + kDistanceCacheOffset[j]);\n size_t prev_ix = cur_ix - backward;\n size_t len = 0;\n uint8_t continuation = ringbuffer[cur_ix_masked + best_len];\n if (cur_ix_masked + best_len > ringbuffer_mask) {\n break;\n }\n if (BROTLI_PREDICT_FALSE(backward > dictionary_start + gap)) {\n /* Word dictionary -> ignore. */\n continue;\n }\n if (backward <= max_distance) {\n /* Regular backward reference. */\n if (prev_ix >= cur_ix) {\n continue;\n }\n\n prev_ix &= ringbuffer_mask;\n if (prev_ix + best_len > ringbuffer_mask ||\n continuation != ringbuffer[prev_ix + best_len]) {\n continue;\n }\n len = FindMatchLengthWithLimit(&ringbuffer[prev_ix],\n &ringbuffer[cur_ix_masked],\n max_len);\n } else if (backward > dictionary_start) {\n size_t d = 0;\n size_t offset;\n size_t limit;\n const uint8_t* source;\n offset = dictionary_start + 1 + addon->total_size - 1;\n while (offset >= backward + addon->chunk_offsets[d + 1]) d++;\n source = addon->chunk_source[d];\n offset = offset - addon->chunk_offsets[d] - backward;\n limit = addon->chunk_offsets[d + 1] - addon->chunk_offsets[d] - offset;\n limit = limit > max_len ? max_len : limit;\n if (best_len >= limit ||\n continuation != source[offset + best_len]) {\n continue;\n }\n len = FindMatchLengthWithLimit(&source[offset],\n &ringbuffer[cur_ix_masked],\n limit);\n } else {\n /* \"Gray\" area. It is addressable by decoder, but this encoder\n instance does not have that data -> should not touch it. */\n continue;\n }\n {\n const float dist_cost = base_cost +\n ZopfliCostModelGetDistanceCost(model, j);\n size_t l;\n for (l = best_len + 1; l <= len; ++l) {\n const uint16_t copycode = GetCopyLengthCode(l);\n const uint16_t cmdcode =\n CombineLengthCodes(inscode, copycode, j == 0);\n const float cost = (cmdcode < 128 ? base_cost : dist_cost) +\n (float)GetCopyExtra(copycode) +\n ZopfliCostModelGetCommandCost(model, cmdcode);\n if (cost < nodes[pos + l].u.cost) {\n UpdateZopfliNode(nodes, pos, start, l, l, backward, j + 1, cost);\n result = BROTLI_MAX(size_t, result, l);\n }\n best_len = l;\n }\n }\n }\n\n /* At higher iterations look only for new last distance matches, since\n looking only for new command start positions with the same distances\n does not help much. */\n if (k >= 2) continue;\n\n {\n /* Loop through all possible copy lengths at this position. */\n size_t len = min_len;\n for (j = 0; j < num_matches; ++j) {\n BackwardMatch match = matches[j];\n size_t dist = match.distance;\n BROTLI_BOOL is_dictionary_match =\n TO_BROTLI_BOOL(dist > dictionary_start + gap);\n /* We already tried all possible last distance matches, so we can use\n normal distance code here. */\n size_t dist_code = dist + BROTLI_NUM_DISTANCE_SHORT_CODES - 1;\n uint16_t dist_symbol;\n uint32_t distextra;\n uint32_t distnumextra;\n float dist_cost;\n size_t max_match_len;\n PrefixEncodeCopyDistance(\n dist_code, params->dist.num_direct_distance_codes,\n params->dist.distance_postfix_bits, &dist_symbol, &distextra);\n distnumextra = dist_symbol >> 10;\n dist_cost = base_cost + (float)distnumextra +\n ZopfliCostModelGetDistanceCost(model, dist_symbol & 0x3FF);\n\n /* Try all copy lengths up until the maximum copy length corresponding\n to this distance. If the distance refers to the static dictionary, or\n the maximum length is long enough, try only one maximum length. */\n max_match_len = BackwardMatchLength(&match);\n if (len < max_match_len &&\n (is_dictionary_match || max_match_len > max_zopfli_len)) {\n len = max_match_len;\n }\n for (; len <= max_match_len; ++len) {\n const size_t len_code =\n is_dictionary_match ? BackwardMatchLengthCode(&match) : len;\n const uint16_t copycode = GetCopyLengthCode(len_code);\n const uint16_t cmdcode = CombineLengthCodes(inscode, copycode, 0);\n const float cost = dist_cost + (float)GetCopyExtra(copycode) +\n ZopfliCostModelGetCommandCost(model, cmdcode);\n if (cost < nodes[pos + len].u.cost) {\n UpdateZopfliNode(nodes, pos, start, len, len_code, dist, 0, cost);\n result = BROTLI_MAX(size_t, result, len);\n }\n }\n }\n }\n }\n return result;\n}\n\nstatic size_t ComputeShortestPathFromNodes(size_t num_bytes,\n ZopfliNode* nodes) {\n size_t index = num_bytes;\n size_t num_commands = 0;\n while ((nodes[index].dcode_insert_length & 0x7FFFFFF) == 0 &&\n nodes[index].length == 1) --index;\n nodes[index].u.next = BROTLI_UINT32_MAX;\n while (index != 0) {\n size_t len = ZopfliNodeCommandLength(&nodes[index]);\n index -= len;\n nodes[index].u.next = (uint32_t)len;\n num_commands++;\n }\n return num_commands;\n}\n\n/* REQUIRES: nodes != NULL and len(nodes) >= num_bytes + 1 */\nvoid BrotliZopfliCreateCommands(const size_t num_bytes,\n const size_t block_start, const ZopfliNode* nodes, int* dist_cache,\n size_t* last_insert_len, const BrotliEncoderParams* params,\n Command* commands, size_t* num_literals) {\n const size_t stream_offset = params->stream_offset;\n const size_t max_backward_limit = BROTLI_MAX_BACKWARD_LIMIT(params->lgwin);\n size_t pos = 0;\n uint32_t offset = nodes[0].u.next;\n size_t i;\n size_t gap = params->dictionary.compound.total_size;\n for (i = 0; offset != BROTLI_UINT32_MAX; i++) {\n const ZopfliNode* next = &nodes[pos + offset];\n size_t copy_length = ZopfliNodeCopyLength(next);\n size_t insert_length = next->dcode_insert_length & 0x7FFFFFF;\n pos += insert_length;\n offset = next->u.next;\n if (i == 0) {\n insert_length += *last_insert_len;\n *last_insert_len = 0;\n }\n {\n size_t distance = ZopfliNodeCopyDistance(next);\n size_t len_code = ZopfliNodeLengthCode(next);\n size_t dictionary_start = BROTLI_MIN(size_t,\n block_start + pos + stream_offset, max_backward_limit);\n BROTLI_BOOL is_dictionary =\n TO_BROTLI_BOOL(distance > dictionary_start + gap);\n size_t dist_code = ZopfliNodeDistanceCode(next);\n InitCommand(&commands[i], ¶ms->dist, insert_length,\n copy_length, (int)len_code - (int)copy_length, dist_code);\n\n if (!is_dictionary && dist_code > 0) {\n dist_cache[3] = dist_cache[2];\n dist_cache[2] = dist_cache[1];\n dist_cache[1] = dist_cache[0];\n dist_cache[0] = (int)distance;\n }\n }\n\n *num_literals += insert_length;\n pos += copy_length;\n }\n *last_insert_len += num_bytes - pos;\n}\n\nstatic size_t ZopfliIterate(size_t num_bytes, size_t position,\n const uint8_t* ringbuffer, size_t ringbuffer_mask,\n const BrotliEncoderParams* params, const size_t gap, const int* dist_cache,\n const ZopfliCostModel* model, const uint32_t* num_matches,\n const BackwardMatch* matches, ZopfliNode* nodes) {\n const size_t stream_offset = params->stream_offset;\n const size_t max_backward_limit = BROTLI_MAX_BACKWARD_LIMIT(params->lgwin);\n const size_t max_zopfli_len = MaxZopfliLen(params);\n StartPosQueue queue;\n size_t cur_match_pos = 0;\n size_t i;\n nodes[0].length = 0;\n nodes[0].u.cost = 0;\n InitStartPosQueue(&queue);\n for (i = 0; i + 3 < num_bytes; i++) {\n size_t skip = UpdateNodes(num_bytes, position, i, ringbuffer,\n ringbuffer_mask, params, max_backward_limit, dist_cache,\n num_matches[i], &matches[cur_match_pos], model, &queue, nodes);\n if (skip < BROTLI_LONG_COPY_QUICK_STEP) skip = 0;\n cur_match_pos += num_matches[i];\n if (num_matches[i] == 1 &&\n BackwardMatchLength(&matches[cur_match_pos - 1]) > max_zopfli_len) {\n skip = BROTLI_MAX(size_t,\n BackwardMatchLength(&matches[cur_match_pos - 1]), skip);\n }\n if (skip > 1) {\n skip--;\n while (skip) {\n i++;\n if (i + 3 >= num_bytes) break;\n EvaluateNode(position + stream_offset, i, max_backward_limit, gap,\n dist_cache, model, &queue, nodes);\n cur_match_pos += num_matches[i];\n skip--;\n }\n }\n }\n return ComputeShortestPathFromNodes(num_bytes, nodes);\n}\n\nstatic void MergeMatches(BackwardMatch* dst,\n BackwardMatch* src1, size_t len1, BackwardMatch* src2, size_t len2) {\n while (len1 > 0 && len2 > 0) {\n size_t l1 = BackwardMatchLength(src1);\n size_t l2 = BackwardMatchLength(src2);\n if (l1 < l2 || ((l1 == l2) && (src1->distance < src2->distance))) {\n *dst++ = *src1++;\n len1--;\n } else {\n *dst++ = *src2++;\n len2--;\n }\n }\n while (len1-- > 0) *dst++ = *src1++;\n while (len2-- > 0) *dst++ = *src2++;\n}\n\n/* REQUIRES: nodes != NULL and len(nodes) >= num_bytes + 1 */\nsize_t BrotliZopfliComputeShortestPath(MemoryManager* m, size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n const int* dist_cache, Hasher* hasher, ZopfliNode* nodes) {\n const size_t stream_offset = params->stream_offset;\n const size_t max_backward_limit = BROTLI_MAX_BACKWARD_LIMIT(params->lgwin);\n const size_t max_zopfli_len = MaxZopfliLen(params);\n StartPosQueue queue;\n BackwardMatch* BROTLI_RESTRICT matches =\n BROTLI_ALLOC(m, BackwardMatch, 2 * (MAX_NUM_MATCHES_H10 + 64));\n const size_t store_end = num_bytes >= StoreLookaheadH10() ?\n position + num_bytes - StoreLookaheadH10() + 1 : position;\n size_t i;\n const CompoundDictionary* addon = ¶ms->dictionary.compound;\n size_t gap = addon->total_size;\n size_t lz_matches_offset =\n (addon->num_chunks != 0) ? (MAX_NUM_MATCHES_H10 + 128) : 0;\n ZopfliCostModel* model = BROTLI_ALLOC(m, ZopfliCostModel, 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(model) || BROTLI_IS_NULL(matches)) {\n return 0;\n }\n nodes[0].length = 0;\n nodes[0].u.cost = 0;\n InitZopfliCostModel(m, model, ¶ms->dist, num_bytes);\n if (BROTLI_IS_OOM(m)) return 0;\n ZopfliCostModelSetFromLiteralCosts(\n model, position, ringbuffer, ringbuffer_mask);\n InitStartPosQueue(&queue);\n for (i = 0; i + HashTypeLengthH10() - 1 < num_bytes; i++) {\n const size_t pos = position + i;\n const size_t max_distance = BROTLI_MIN(size_t, pos, max_backward_limit);\n const size_t dictionary_start = BROTLI_MIN(size_t,\n pos + stream_offset, max_backward_limit);\n size_t skip;\n size_t num_matches;\n int dict_id = 0;\n if (params->dictionary.contextual.context_based) {\n uint8_t p1 = pos >= 1 ?\n ringbuffer[(size_t)(pos - 1) & ringbuffer_mask] : 0;\n uint8_t p2 = pos >= 2 ?\n ringbuffer[(size_t)(pos - 2) & ringbuffer_mask] : 0;\n dict_id = params->dictionary.contextual.context_map[\n BROTLI_CONTEXT(p1, p2, literal_context_lut)];\n }\n num_matches = FindAllMatchesH10(&hasher->privat._H10,\n params->dictionary.contextual.dict[dict_id],\n ringbuffer, ringbuffer_mask, pos, num_bytes - i, max_distance,\n dictionary_start + gap, params, &matches[lz_matches_offset]);\n if (addon->num_chunks != 0) {\n size_t cd_matches = LookupAllCompoundDictionaryMatches(addon,\n ringbuffer, ringbuffer_mask, pos, 3, num_bytes - i,\n dictionary_start, params->dist.max_distance,\n &matches[lz_matches_offset - 64], 64);\n MergeMatches(matches, &matches[lz_matches_offset - 64], cd_matches,\n &matches[lz_matches_offset], num_matches);\n num_matches += cd_matches;\n }\n if (num_matches > 0 &&\n BackwardMatchLength(&matches[num_matches - 1]) > max_zopfli_len) {\n matches[0] = matches[num_matches - 1];\n num_matches = 1;\n }\n skip = UpdateNodes(num_bytes, position, i, ringbuffer, ringbuffer_mask,\n params, max_backward_limit, dist_cache, num_matches, matches, model,\n &queue, nodes);\n if (skip < BROTLI_LONG_COPY_QUICK_STEP) skip = 0;\n if (num_matches == 1 && BackwardMatchLength(&matches[0]) > max_zopfli_len) {\n skip = BROTLI_MAX(size_t, BackwardMatchLength(&matches[0]), skip);\n }\n if (skip > 1) {\n /* Add the tail of the copy to the hasher. */\n StoreRangeH10(&hasher->privat._H10,\n ringbuffer, ringbuffer_mask, pos + 1, BROTLI_MIN(\n size_t, pos + skip, store_end));\n skip--;\n while (skip) {\n i++;\n if (i + HashTypeLengthH10() - 1 >= num_bytes) break;\n EvaluateNode(position + stream_offset, i, max_backward_limit, gap,\n dist_cache, model, &queue, nodes);\n skip--;\n }\n }\n }\n CleanupZopfliCostModel(m, model);\n BROTLI_FREE(m, model);\n BROTLI_FREE(m, matches);\n return ComputeShortestPathFromNodes(num_bytes, nodes);\n}\n\nvoid BrotliCreateZopfliBackwardReferences(MemoryManager* m, size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals) {\n ZopfliNode* nodes = BROTLI_ALLOC(m, ZopfliNode, num_bytes + 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(nodes)) return;\n BrotliInitZopfliNodes(nodes, num_bytes + 1);\n *num_commands += BrotliZopfliComputeShortestPath(m, num_bytes,\n position, ringbuffer, ringbuffer_mask, literal_context_lut, params,\n dist_cache, hasher, nodes);\n if (BROTLI_IS_OOM(m)) return;\n BrotliZopfliCreateCommands(num_bytes, position, nodes, dist_cache,\n last_insert_len, params, commands, num_literals);\n BROTLI_FREE(m, nodes);\n}\n\nvoid BrotliCreateHqZopfliBackwardReferences(MemoryManager* m, size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals) {\n const size_t stream_offset = params->stream_offset;\n const size_t max_backward_limit = BROTLI_MAX_BACKWARD_LIMIT(params->lgwin);\n uint32_t* num_matches = BROTLI_ALLOC(m, uint32_t, num_bytes);\n size_t matches_size = 4 * num_bytes;\n const size_t store_end = num_bytes >= StoreLookaheadH10() ?\n position + num_bytes - StoreLookaheadH10() + 1 : position;\n size_t cur_match_pos = 0;\n size_t i;\n size_t orig_num_literals;\n size_t orig_last_insert_len;\n int orig_dist_cache[4];\n size_t orig_num_commands;\n ZopfliCostModel* model = BROTLI_ALLOC(m, ZopfliCostModel, 1);\n ZopfliNode* nodes;\n BackwardMatch* matches = BROTLI_ALLOC(m, BackwardMatch, matches_size);\n const CompoundDictionary* addon = ¶ms->dictionary.compound;\n size_t gap = addon->total_size;\n size_t shadow_matches =\n (addon->num_chunks != 0) ? (MAX_NUM_MATCHES_H10 + 128) : 0;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(model) ||\n BROTLI_IS_NULL(num_matches) || BROTLI_IS_NULL(matches)) {\n return;\n }\n for (i = 0; i + HashTypeLengthH10() - 1 < num_bytes; ++i) {\n const size_t pos = position + i;\n size_t max_distance = BROTLI_MIN(size_t, pos, max_backward_limit);\n size_t dictionary_start = BROTLI_MIN(size_t,\n pos + stream_offset, max_backward_limit);\n size_t max_length = num_bytes - i;\n size_t num_found_matches;\n size_t cur_match_end;\n size_t j;\n int dict_id = 0;\n if (params->dictionary.contextual.context_based) {\n uint8_t p1 = pos >= 1 ?\n ringbuffer[(size_t)(pos - 1) & ringbuffer_mask] : 0;\n uint8_t p2 = pos >= 2 ?\n ringbuffer[(size_t)(pos - 2) & ringbuffer_mask] : 0;\n dict_id = params->dictionary.contextual.context_map[\n BROTLI_CONTEXT(p1, p2, literal_context_lut)];\n }\n /* Ensure that we have enough free slots. */\n BROTLI_ENSURE_CAPACITY(m, BackwardMatch, matches, matches_size,\n cur_match_pos + MAX_NUM_MATCHES_H10 + shadow_matches);\n if (BROTLI_IS_OOM(m)) return;\n num_found_matches = FindAllMatchesH10(&hasher->privat._H10,\n params->dictionary.contextual.dict[dict_id],\n ringbuffer, ringbuffer_mask, pos, max_length,\n max_distance, dictionary_start + gap, params,\n &matches[cur_match_pos + shadow_matches]);\n if (addon->num_chunks != 0) {\n size_t cd_matches = LookupAllCompoundDictionaryMatches(addon,\n ringbuffer, ringbuffer_mask, pos, 3, max_length,\n dictionary_start, params->dist.max_distance,\n &matches[cur_match_pos + shadow_matches - 64], 64);\n MergeMatches(&matches[cur_match_pos],\n &matches[cur_match_pos + shadow_matches - 64], cd_matches,\n &matches[cur_match_pos + shadow_matches], num_found_matches);\n num_found_matches += cd_matches;\n }\n cur_match_end = cur_match_pos + num_found_matches;\n for (j = cur_match_pos; j + 1 < cur_match_end; ++j) {\n BROTLI_DCHECK(BackwardMatchLength(&matches[j]) <=\n BackwardMatchLength(&matches[j + 1]));\n }\n num_matches[i] = (uint32_t)num_found_matches;\n if (num_found_matches > 0) {\n const size_t match_len = BackwardMatchLength(&matches[cur_match_end - 1]);\n if (match_len > MAX_ZOPFLI_LEN_QUALITY_11) {\n const size_t skip = match_len - 1;\n matches[cur_match_pos++] = matches[cur_match_end - 1];\n num_matches[i] = 1;\n /* Add the tail of the copy to the hasher. */\n StoreRangeH10(&hasher->privat._H10,\n ringbuffer, ringbuffer_mask, pos + 1,\n BROTLI_MIN(size_t, pos + match_len, store_end));\n memset(&num_matches[i + 1], 0, skip * sizeof(num_matches[0]));\n i += skip;\n } else {\n cur_match_pos = cur_match_end;\n }\n }\n }\n orig_num_literals = *num_literals;\n orig_last_insert_len = *last_insert_len;\n memcpy(orig_dist_cache, dist_cache, 4 * sizeof(dist_cache[0]));\n orig_num_commands = *num_commands;\n nodes = BROTLI_ALLOC(m, ZopfliNode, num_bytes + 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(nodes)) return;\n InitZopfliCostModel(m, model, ¶ms->dist, num_bytes);\n if (BROTLI_IS_OOM(m)) return;\n for (i = 0; i < 2; i++) {\n BrotliInitZopfliNodes(nodes, num_bytes + 1);\n if (i == 0) {\n ZopfliCostModelSetFromLiteralCosts(\n model, position, ringbuffer, ringbuffer_mask);\n } else {\n ZopfliCostModelSetFromCommands(model, position, ringbuffer,\n ringbuffer_mask, commands, *num_commands - orig_num_commands,\n orig_last_insert_len);\n }\n *num_commands = orig_num_commands;\n *num_literals = orig_num_literals;\n *last_insert_len = orig_last_insert_len;\n memcpy(dist_cache, orig_dist_cache, 4 * sizeof(dist_cache[0]));\n *num_commands += ZopfliIterate(num_bytes, position, ringbuffer,\n ringbuffer_mask, params, gap, dist_cache, model, num_matches, matches,\n nodes);\n BrotliZopfliCreateCommands(num_bytes, position, nodes, dist_cache,\n last_insert_len, params, commands, num_literals);\n }\n CleanupZopfliCostModel(m, model);\n BROTLI_FREE(m, model);\n BROTLI_FREE(m, nodes);\n BROTLI_FREE(m, matches);\n BROTLI_FREE(m, num_matches);\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/backward_references_hq.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function to find backward reference copies. */\n\n#ifndef BROTLI_ENC_BACKWARD_REFERENCES_HQ_H_\n#define BROTLI_ENC_BACKWARD_REFERENCES_HQ_H_\n\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"hash.h\"\n#include \"memory.h\"\n#include \"params.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nBROTLI_INTERNAL void BrotliCreateZopfliBackwardReferences(MemoryManager* m,\n size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals);\n\nBROTLI_INTERNAL void BrotliCreateHqZopfliBackwardReferences(MemoryManager* m,\n size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals);\n\ntypedef struct ZopfliNode {\n /* Best length to get up to this byte (not including this byte itself)\n highest 7 bit is used to reconstruct the length code. */\n uint32_t length;\n /* Distance associated with the length. */\n uint32_t distance;\n /* Number of literal inserts before this copy; highest 5 bits contain\n distance short code + 1 (or zero if no short code). */\n uint32_t dcode_insert_length;\n\n /* This union holds information used by dynamic-programming. During forward\n pass |cost| it used to store the goal function. When node is processed its\n |cost| is invalidated in favor of |shortcut|. On path back-tracing pass\n |next| is assigned the offset to next node on the path. */\n union {\n /* Smallest cost to get to this byte from the beginning, as found so far. */\n float cost;\n /* Offset to the next node on the path. Equals to command_length() of the\n next node on the path. For last node equals to BROTLI_UINT32_MAX */\n uint32_t next;\n /* Node position that provides next distance for distance cache. */\n uint32_t shortcut;\n } u;\n} ZopfliNode;\n\nBROTLI_INTERNAL void BrotliInitZopfliNodes(ZopfliNode* array, size_t length);\n\n/* Computes the shortest path of commands from position to at most\n position + num_bytes.\n\n On return, path->size() is the number of commands found and path[i] is the\n length of the i-th command (copy length plus insert length).\n Note that the sum of the lengths of all commands can be less than num_bytes.\n\n On return, the nodes[0..num_bytes] array will have the following\n \"ZopfliNode array invariant\":\n For each i in [1..num_bytes], if nodes[i].cost < kInfinity, then\n (1) nodes[i].copy_length() >= 2\n (2) nodes[i].command_length() <= i and\n (3) nodes[i - nodes[i].command_length()].cost < kInfinity */\nBROTLI_INTERNAL size_t BrotliZopfliComputeShortestPath(\n MemoryManager* m, size_t num_bytes,\n size_t position, const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n const int* dist_cache, Hasher* hasher, ZopfliNode* nodes);\n\nBROTLI_INTERNAL void BrotliZopfliCreateCommands(\n const size_t num_bytes, const size_t block_start, const ZopfliNode* nodes,\n int* dist_cache, size_t* last_insert_len, const BrotliEncoderParams* params,\n Command* commands, size_t* num_literals);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_BACKWARD_REFERENCES_HQ_H_ */\n" }, { "path": "c/enc/backward_references_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: EXPORT_FN, FN */\n\nstatic BROTLI_NOINLINE void EXPORT_FN(CreateBackwardReferences)(\n size_t num_bytes, size_t position,\n const uint8_t* ringbuffer, size_t ringbuffer_mask,\n ContextLut literal_context_lut, const BrotliEncoderParams* params,\n Hasher* hasher, int* dist_cache, size_t* last_insert_len,\n Command* commands, size_t* num_commands, size_t* num_literals) {\n HASHER()* privat = &hasher->privat.FN(_);\n /* Set maximum distance, see section 9.1. of the spec. */\n const size_t max_backward_limit = BROTLI_MAX_BACKWARD_LIMIT(params->lgwin);\n const size_t position_offset = params->stream_offset;\n\n const Command* const orig_commands = commands;\n size_t insert_length = *last_insert_len;\n const size_t pos_end = position + num_bytes;\n const size_t store_end = num_bytes >= FN(StoreLookahead)() ?\n position + num_bytes - FN(StoreLookahead)() + 1 : position;\n\n /* For speed up heuristics for random data. */\n const size_t random_heuristics_window_size =\n LiteralSpreeLengthForSparseSearch(params);\n size_t apply_random_heuristics = position + random_heuristics_window_size;\n const size_t gap = params->dictionary.compound.total_size;\n\n /* Minimum score to accept a backward reference. */\n const score_t kMinScore = BROTLI_SCORE_BASE + 100;\n\n FN(PrepareDistanceCache)(privat, dist_cache);\n\n while (position + FN(HashTypeLength)() < pos_end) {\n size_t max_length = pos_end - position;\n size_t max_distance = BROTLI_MIN(size_t, position, max_backward_limit);\n size_t dictionary_start = BROTLI_MIN(size_t,\n position + position_offset, max_backward_limit);\n HasherSearchResult sr;\n int dict_id = 0;\n uint8_t p1 = 0;\n uint8_t p2 = 0;\n if (params->dictionary.contextual.context_based) {\n p1 = position >= 1 ?\n ringbuffer[(size_t)(position - 1) & ringbuffer_mask] : 0;\n p2 = position >= 2 ?\n ringbuffer[(size_t)(position - 2) & ringbuffer_mask] : 0;\n dict_id = params->dictionary.contextual.context_map[\n BROTLI_CONTEXT(p1, p2, literal_context_lut)];\n }\n sr.len = 0;\n sr.len_code_delta = 0;\n sr.distance = 0;\n sr.score = kMinScore;\n FN(FindLongestMatch)(privat, params->dictionary.contextual.dict[dict_id],\n ringbuffer, ringbuffer_mask, dist_cache, position, max_length,\n max_distance, dictionary_start + gap, params->dist.max_distance, &sr);\n if (ENABLE_COMPOUND_DICTIONARY) {\n LookupCompoundDictionaryMatch(¶ms->dictionary.compound, ringbuffer,\n ringbuffer_mask, dist_cache, position, max_length,\n dictionary_start, params->dist.max_distance, &sr);\n }\n if (sr.score > kMinScore) {\n /* Found a match. Let's look for something even better ahead. */\n int delayed_backward_references_in_row = 0;\n --max_length;\n for (;; --max_length) {\n const score_t cost_diff_lazy = 175;\n HasherSearchResult sr2;\n sr2.len = params->quality < MIN_QUALITY_FOR_EXTENSIVE_REFERENCE_SEARCH ?\n BROTLI_MIN(size_t, sr.len - 1, max_length) : 0;\n sr2.len_code_delta = 0;\n sr2.distance = 0;\n sr2.score = kMinScore;\n max_distance = BROTLI_MIN(size_t, position + 1, max_backward_limit);\n dictionary_start = BROTLI_MIN(size_t,\n position + 1 + position_offset, max_backward_limit);\n if (params->dictionary.contextual.context_based) {\n p2 = p1;\n p1 = ringbuffer[position & ringbuffer_mask];\n dict_id = params->dictionary.contextual.context_map[\n BROTLI_CONTEXT(p1, p2, literal_context_lut)];\n }\n FN(FindLongestMatch)(privat,\n params->dictionary.contextual.dict[dict_id],\n ringbuffer, ringbuffer_mask, dist_cache, position + 1, max_length,\n max_distance, dictionary_start + gap, params->dist.max_distance,\n &sr2);\n if (ENABLE_COMPOUND_DICTIONARY) {\n LookupCompoundDictionaryMatch(\n ¶ms->dictionary.compound, ringbuffer,\n ringbuffer_mask, dist_cache, position + 1, max_length,\n dictionary_start, params->dist.max_distance, &sr2);\n }\n if (sr2.score >= sr.score + cost_diff_lazy) {\n /* Ok, let's just write one byte for now and start a match from the\n next byte. */\n ++position;\n ++insert_length;\n sr = sr2;\n if (++delayed_backward_references_in_row < 4 &&\n position + FN(HashTypeLength)() < pos_end) {\n continue;\n }\n }\n break;\n }\n apply_random_heuristics =\n position + 2 * sr.len + random_heuristics_window_size;\n dictionary_start = BROTLI_MIN(size_t,\n position + position_offset, max_backward_limit);\n {\n /* The first 16 codes are special short-codes,\n and the minimum offset is 1. */\n size_t distance_code = ComputeDistanceCode(\n sr.distance, dictionary_start + gap, dist_cache);\n if ((sr.distance <= (dictionary_start + gap)) && distance_code > 0) {\n dist_cache[3] = dist_cache[2];\n dist_cache[2] = dist_cache[1];\n dist_cache[1] = dist_cache[0];\n dist_cache[0] = (int)sr.distance;\n FN(PrepareDistanceCache)(privat, dist_cache);\n }\n InitCommand(commands++, ¶ms->dist, insert_length,\n sr.len, sr.len_code_delta, distance_code);\n }\n *num_literals += insert_length;\n insert_length = 0;\n /* Put the hash keys into the table, if there are enough bytes left.\n Depending on the hasher implementation, it can push all positions\n in the given range or only a subset of them.\n Avoid hash poisoning with RLE data. */\n {\n size_t range_start = position + 2;\n size_t range_end = BROTLI_MIN(size_t, position + sr.len, store_end);\n if (sr.distance < (sr.len >> 2)) {\n range_start = BROTLI_MIN(size_t, range_end, BROTLI_MAX(size_t,\n range_start, position + sr.len - (sr.distance << 2)));\n }\n FN(StoreRange)(privat, ringbuffer, ringbuffer_mask, range_start,\n range_end);\n }\n position += sr.len;\n } else {\n ++insert_length;\n ++position;\n /* If we have not seen matches for a long time, we can skip some\n match lookups. Unsuccessful match lookups are very very expensive\n and this kind of a heuristic speeds up compression quite\n a lot. */\n if (position > apply_random_heuristics) {\n /* Going through uncompressible data, jump. */\n if (position >\n apply_random_heuristics + 4 * random_heuristics_window_size) {\n /* It is quite a long time since we saw a copy, so we assume\n that this data is not compressible, and store hashes less\n often. Hashes of non compressible data are less likely to\n turn out to be useful in the future, too, so we store less of\n them to not to flood out the hash table of good compressible\n data. */\n const size_t kMargin =\n BROTLI_MAX(size_t, FN(StoreLookahead)() - 1, 4);\n size_t pos_jump =\n BROTLI_MIN(size_t, position + 16, pos_end - kMargin);\n for (; position < pos_jump; position += 4) {\n FN(Store)(privat, ringbuffer, ringbuffer_mask, position);\n insert_length += 4;\n }\n } else {\n const size_t kMargin =\n BROTLI_MAX(size_t, FN(StoreLookahead)() - 1, 2);\n size_t pos_jump =\n BROTLI_MIN(size_t, position + 8, pos_end - kMargin);\n for (; position < pos_jump; position += 2) {\n FN(Store)(privat, ringbuffer, ringbuffer_mask, position);\n insert_length += 2;\n }\n }\n }\n }\n }\n insert_length += pos_end - position;\n *last_insert_len = insert_length;\n *num_commands += (size_t)(commands - orig_commands);\n}\n" }, { "path": "c/enc/bit_cost.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions to estimate the bit cost of Huffman trees. */\n\n#include \"bit_cost.h\"\n\n#include \"../common/platform.h\"\n#include \"fast_log.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ndouble BrotliBitsEntropy(const uint32_t* population, size_t size) {\n size_t sum = 0;\n double retval = 0;\n const uint32_t* population_end = population + size;\n size_t p;\n if (size & 1) {\n goto odd_number_of_elements_left;\n }\n while (population < population_end) {\n p = *population++;\n sum += p;\n retval -= (double)p * FastLog2(p);\n odd_number_of_elements_left:\n p = *population++;\n sum += p;\n retval -= (double)p * FastLog2(p);\n }\n if (sum) retval += (double)sum * FastLog2(sum);\n\n if (retval < (double)sum) {\n /* TODO(eustas): consider doing that per-symbol? */\n /* At least one bit per literal is needed. */\n retval = (double)sum;\n }\n\n return retval;\n}\n\n#define FN(X) X ## Literal\n#include \"bit_cost_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Command\n#include \"bit_cost_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Distance\n#include \"bit_cost_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/bit_cost.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions to estimate the bit cost of Huffman trees. */\n\n#ifndef BROTLI_ENC_BIT_COST_H_\n#define BROTLI_ENC_BIT_COST_H_\n\n#include \"../common/platform.h\"\n#include \"histogram.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nBROTLI_INTERNAL double BrotliBitsEntropy(\n const uint32_t* population, size_t size);\nBROTLI_INTERNAL double BrotliPopulationCostLiteral(\n const HistogramLiteral* histogram);\nBROTLI_INTERNAL double BrotliPopulationCostCommand(\n const HistogramCommand* histogram);\nBROTLI_INTERNAL double BrotliPopulationCostDistance(\n const HistogramDistance* histogram);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_BIT_COST_H_ */\n" }, { "path": "c/enc/bit_cost_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n#define HistogramType FN(Histogram)\n\ndouble FN(BrotliPopulationCost)(const HistogramType* histogram) {\n static const double kOneSymbolHistogramCost = 12;\n static const double kTwoSymbolHistogramCost = 20;\n static const double kThreeSymbolHistogramCost = 28;\n static const double kFourSymbolHistogramCost = 37;\n const size_t data_size = FN(HistogramDataSize)();\n int count = 0;\n size_t s[5];\n double bits = 0.0;\n size_t i;\n if (histogram->total_count_ == 0) {\n return kOneSymbolHistogramCost;\n }\n for (i = 0; i < data_size; ++i) {\n if (histogram->data_[i] > 0) {\n s[count] = i;\n ++count;\n if (count > 4) break;\n }\n }\n if (count == 1) {\n return kOneSymbolHistogramCost;\n }\n if (count == 2) {\n return (kTwoSymbolHistogramCost + (double)histogram->total_count_);\n }\n if (count == 3) {\n const uint32_t histo0 = histogram->data_[s[0]];\n const uint32_t histo1 = histogram->data_[s[1]];\n const uint32_t histo2 = histogram->data_[s[2]];\n const uint32_t histomax =\n BROTLI_MAX(uint32_t, histo0, BROTLI_MAX(uint32_t, histo1, histo2));\n return (kThreeSymbolHistogramCost +\n 2 * (histo0 + histo1 + histo2) - histomax);\n }\n if (count == 4) {\n uint32_t histo[4];\n uint32_t h23;\n uint32_t histomax;\n for (i = 0; i < 4; ++i) {\n histo[i] = histogram->data_[s[i]];\n }\n /* Sort */\n for (i = 0; i < 4; ++i) {\n size_t j;\n for (j = i + 1; j < 4; ++j) {\n if (histo[j] > histo[i]) {\n BROTLI_SWAP(uint32_t, histo, j, i);\n }\n }\n }\n h23 = histo[2] + histo[3];\n histomax = BROTLI_MAX(uint32_t, h23, histo[0]);\n return (kFourSymbolHistogramCost +\n 3 * h23 + 2 * (histo[0] + histo[1]) - histomax);\n }\n\n {\n /* In this loop we compute the entropy of the histogram and simultaneously\n build a simplified histogram of the code length codes where we use the\n zero repeat code 17, but we don't use the non-zero repeat code 16. */\n size_t max_depth = 1;\n uint32_t depth_histo[BROTLI_CODE_LENGTH_CODES] = { 0 };\n const double log2total = FastLog2(histogram->total_count_);\n for (i = 0; i < data_size;) {\n if (histogram->data_[i] > 0) {\n /* Compute -log2(P(symbol)) = -log2(count(symbol)/total_count) =\n = log2(total_count) - log2(count(symbol)) */\n double log2p = log2total - FastLog2(histogram->data_[i]);\n /* Approximate the bit depth by round(-log2(P(symbol))) */\n size_t depth = (size_t)(log2p + 0.5);\n bits += histogram->data_[i] * log2p;\n if (depth > 15) {\n depth = 15;\n }\n if (depth > max_depth) {\n max_depth = depth;\n }\n ++depth_histo[depth];\n ++i;\n } else {\n /* Compute the run length of zeros and add the appropriate number of 0\n and 17 code length codes to the code length code histogram. */\n uint32_t reps = 1;\n size_t k;\n for (k = i + 1; k < data_size && histogram->data_[k] == 0; ++k) {\n ++reps;\n }\n i += reps;\n if (i == data_size) {\n /* Don't add any cost for the last zero run, since these are encoded\n only implicitly. */\n break;\n }\n if (reps < 3) {\n depth_histo[0] += reps;\n } else {\n reps -= 2;\n while (reps > 0) {\n ++depth_histo[BROTLI_REPEAT_ZERO_CODE_LENGTH];\n /* Add the 3 extra bits for the 17 code length code. */\n bits += 3;\n reps >>= 3;\n }\n }\n }\n }\n /* Add the estimated encoding cost of the code length code histogram. */\n bits += (double)(18 + 2 * max_depth);\n /* Add the entropy of the code length code histogram. */\n bits += BrotliBitsEntropy(depth_histo, BROTLI_CODE_LENGTH_CODES);\n }\n return bits;\n}\n\n#undef HistogramType\n" }, { "path": "c/enc/block_encoder_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2014 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n#define HistogramType FN(Histogram)\n\n/* Creates entropy codes for all block types and stores them to the bit\n stream. */\nstatic void FN(BuildAndStoreEntropyCodes)(MemoryManager* m, BlockEncoder* self,\n const HistogramType* histograms, const size_t histograms_size,\n const size_t alphabet_size, HuffmanTree* tree,\n size_t* storage_ix, uint8_t* storage) {\n const size_t table_size = histograms_size * self->histogram_length_;\n self->depths_ = BROTLI_ALLOC(m, uint8_t, table_size);\n self->bits_ = BROTLI_ALLOC(m, uint16_t, table_size);\n if (BROTLI_IS_OOM(m)) return;\n\n {\n size_t i;\n for (i = 0; i < histograms_size; ++i) {\n size_t ix = i * self->histogram_length_;\n BuildAndStoreHuffmanTree(&histograms[i].data_[0], self->histogram_length_,\n alphabet_size, tree, &self->depths_[ix], &self->bits_[ix],\n storage_ix, storage);\n }\n }\n}\n\n#undef HistogramType\n" }, { "path": "c/enc/block_splitter.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Block split point selection utilities. */\n\n#include \"block_splitter.h\"\n\n#include \"../common/platform.h\"\n#include \"bit_cost.h\"\n#include \"cluster.h\"\n#include \"command.h\"\n#include \"fast_log.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n#include \"quality.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic const size_t kMaxLiteralHistograms = 100;\nstatic const size_t kMaxCommandHistograms = 50;\nstatic const double kLiteralBlockSwitchCost = 28.1;\nstatic const double kCommandBlockSwitchCost = 13.5;\nstatic const double kDistanceBlockSwitchCost = 14.6;\nstatic const size_t kLiteralStrideLength = 70;\nstatic const size_t kCommandStrideLength = 40;\nstatic const size_t kDistanceStrideLength = 40;\nstatic const size_t kSymbolsPerLiteralHistogram = 544;\nstatic const size_t kSymbolsPerCommandHistogram = 530;\nstatic const size_t kSymbolsPerDistanceHistogram = 544;\nstatic const size_t kMinLengthForBlockSplitting = 128;\nstatic const size_t kIterMulForRefining = 2;\nstatic const size_t kMinItersForRefining = 100;\n\nstatic size_t CountLiterals(const Command* cmds, const size_t num_commands) {\n /* Count how many we have. */\n size_t total_length = 0;\n size_t i;\n for (i = 0; i < num_commands; ++i) {\n total_length += cmds[i].insert_len_;\n }\n return total_length;\n}\n\nstatic void CopyLiteralsToByteArray(const Command* cmds,\n const size_t num_commands,\n const uint8_t* data,\n const size_t offset,\n const size_t mask,\n uint8_t* literals) {\n size_t pos = 0;\n size_t from_pos = offset & mask;\n size_t i;\n for (i = 0; i < num_commands; ++i) {\n size_t insert_len = cmds[i].insert_len_;\n if (from_pos + insert_len > mask) {\n size_t head_size = mask + 1 - from_pos;\n memcpy(literals + pos, data + from_pos, head_size);\n from_pos = 0;\n pos += head_size;\n insert_len -= head_size;\n }\n if (insert_len > 0) {\n memcpy(literals + pos, data + from_pos, insert_len);\n pos += insert_len;\n }\n from_pos = (from_pos + insert_len + CommandCopyLen(&cmds[i])) & mask;\n }\n}\n\nstatic BROTLI_INLINE uint32_t MyRand(uint32_t* seed) {\n /* Initial seed should be 7. In this case, loop length is (1 << 29). */\n *seed *= 16807U;\n return *seed;\n}\n\nstatic BROTLI_INLINE double BitCost(size_t count) {\n return count == 0 ? -2.0 : FastLog2(count);\n}\n\n#define HISTOGRAMS_PER_BATCH 64\n#define CLUSTERS_PER_BATCH 16\n\n#define FN(X) X ## Literal\n#define DataType uint8_t\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_splitter_inc.h\"\n#undef DataType\n#undef FN\n\n#define FN(X) X ## Command\n#define DataType uint16_t\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_splitter_inc.h\"\n#undef FN\n\n#define FN(X) X ## Distance\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_splitter_inc.h\"\n#undef DataType\n#undef FN\n\nvoid BrotliInitBlockSplit(BlockSplit* self) {\n self->num_types = 0;\n self->num_blocks = 0;\n self->types = 0;\n self->lengths = 0;\n self->types_alloc_size = 0;\n self->lengths_alloc_size = 0;\n}\n\nvoid BrotliDestroyBlockSplit(MemoryManager* m, BlockSplit* self) {\n BROTLI_FREE(m, self->types);\n BROTLI_FREE(m, self->lengths);\n}\n\n/* Extracts literals, command distance and prefix codes, then applies\n * SplitByteVector to create partitioning. */\nvoid BrotliSplitBlock(MemoryManager* m,\n const Command* cmds,\n const size_t num_commands,\n const uint8_t* data,\n const size_t pos,\n const size_t mask,\n const BrotliEncoderParams* params,\n BlockSplit* literal_split,\n BlockSplit* insert_and_copy_split,\n BlockSplit* dist_split) {\n {\n size_t literals_count = CountLiterals(cmds, num_commands);\n uint8_t* literals = BROTLI_ALLOC(m, uint8_t, literals_count);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(literals)) return;\n /* Create a continuous array of literals. */\n CopyLiteralsToByteArray(cmds, num_commands, data, pos, mask, literals);\n /* Create the block split on the array of literals.\n * Literal histograms can have alphabet size up to 256.\n * Though, to accommodate context modeling, less than half of maximum size\n * is allowed. */\n SplitByteVectorLiteral(\n m, literals, literals_count,\n kSymbolsPerLiteralHistogram, kMaxLiteralHistograms,\n kLiteralStrideLength, kLiteralBlockSwitchCost, params,\n literal_split);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, literals);\n /* NB: this might be a good place for injecting extra splitting without\n * increasing encoder complexity; however, output partition would be less\n * optimal than one produced with forced splitting inside\n * SplitByteVector (FindBlocks / ClusterBlocks). */\n }\n\n {\n /* Compute prefix codes for commands. */\n uint16_t* insert_and_copy_codes = BROTLI_ALLOC(m, uint16_t, num_commands);\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(insert_and_copy_codes)) return;\n for (i = 0; i < num_commands; ++i) {\n insert_and_copy_codes[i] = cmds[i].cmd_prefix_;\n }\n /* Create the block split on the array of command prefixes. */\n SplitByteVectorCommand(\n m, insert_and_copy_codes, num_commands,\n kSymbolsPerCommandHistogram, kMaxCommandHistograms,\n kCommandStrideLength, kCommandBlockSwitchCost, params,\n insert_and_copy_split);\n if (BROTLI_IS_OOM(m)) return;\n /* TODO(eustas): reuse for distances? */\n BROTLI_FREE(m, insert_and_copy_codes);\n }\n\n {\n /* Create a continuous array of distance prefixes. */\n uint16_t* distance_prefixes = BROTLI_ALLOC(m, uint16_t, num_commands);\n size_t j = 0;\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(distance_prefixes)) return;\n for (i = 0; i < num_commands; ++i) {\n const Command* cmd = &cmds[i];\n if (CommandCopyLen(cmd) && cmd->cmd_prefix_ >= 128) {\n distance_prefixes[j++] = cmd->dist_prefix_ & 0x3FF;\n }\n }\n /* Create the block split on the array of distance prefixes. */\n SplitByteVectorDistance(\n m, distance_prefixes, j,\n kSymbolsPerDistanceHistogram, kMaxCommandHistograms,\n kDistanceStrideLength, kDistanceBlockSwitchCost, params,\n dist_split);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, distance_prefixes);\n }\n}\n\n#if defined(BROTLI_TEST)\nsize_t BrotliCountLiteralsForTest(const Command*, size_t);\nsize_t BrotliCountLiteralsForTest(const Command* cmds, size_t num_commands) {\n return CountLiterals(cmds, num_commands);\n}\nvoid BrotliCopyLiteralsToByteArrayForTest(\n const Command*, size_t, const uint8_t*, size_t, size_t, uint8_t*);\nvoid BrotliCopyLiteralsToByteArrayForTest(const Command* cmds,\n size_t num_commands, const uint8_t* data, size_t offset, size_t mask,\n uint8_t* literals) {\n CopyLiteralsToByteArray(cmds, num_commands, data, offset, mask, literals);\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/block_splitter.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Block split point selection utilities. */\n\n#ifndef BROTLI_ENC_BLOCK_SPLITTER_H_\n#define BROTLI_ENC_BLOCK_SPLITTER_H_\n\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"memory.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct BlockSplit {\n size_t num_types; /* Amount of distinct types */\n size_t num_blocks; /* Amount of values in types and length */\n uint8_t* types;\n uint32_t* lengths;\n\n size_t types_alloc_size;\n size_t lengths_alloc_size;\n} BlockSplit;\n\nBROTLI_INTERNAL void BrotliInitBlockSplit(BlockSplit* self);\nBROTLI_INTERNAL void BrotliDestroyBlockSplit(MemoryManager* m,\n BlockSplit* self);\n\nBROTLI_INTERNAL void BrotliSplitBlock(MemoryManager* m,\n const Command* cmds,\n const size_t num_commands,\n const uint8_t* data,\n const size_t offset,\n const size_t mask,\n const BrotliEncoderParams* params,\n BlockSplit* literal_split,\n BlockSplit* insert_and_copy_split,\n BlockSplit* dist_split);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_BLOCK_SPLITTER_H_ */\n" }, { "path": "c/enc/block_splitter_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, DataType */\n\n#define HistogramType FN(Histogram)\n\nstatic void FN(InitialEntropyCodes)(const DataType* data, size_t length,\n size_t stride,\n size_t num_histograms,\n HistogramType* histograms) {\n uint32_t seed = 7;\n size_t block_length = length / num_histograms;\n size_t i;\n FN(ClearHistograms)(histograms, num_histograms);\n for (i = 0; i < num_histograms; ++i) {\n size_t pos = length * i / num_histograms;\n if (i != 0) {\n pos += MyRand(&seed) % block_length;\n }\n if (pos + stride >= length) {\n pos = length - stride - 1;\n }\n FN(HistogramAddVector)(&histograms[i], data + pos, stride);\n }\n}\n\nstatic void FN(RandomSample)(uint32_t* seed,\n const DataType* data,\n size_t length,\n size_t stride,\n HistogramType* sample) {\n size_t pos = 0;\n if (stride >= length) {\n stride = length;\n } else {\n pos = MyRand(seed) % (length - stride + 1);\n }\n FN(HistogramAddVector)(sample, data + pos, stride);\n}\n\nstatic void FN(RefineEntropyCodes)(const DataType* data, size_t length,\n size_t stride,\n size_t num_histograms,\n HistogramType* histograms,\n HistogramType* tmp) {\n size_t iters =\n kIterMulForRefining * length / stride + kMinItersForRefining;\n uint32_t seed = 7;\n size_t iter;\n iters = ((iters + num_histograms - 1) / num_histograms) * num_histograms;\n for (iter = 0; iter < iters; ++iter) {\n FN(HistogramClear)(tmp);\n FN(RandomSample)(&seed, data, length, stride, tmp);\n FN(HistogramAddHistogram)(&histograms[iter % num_histograms], tmp);\n }\n}\n\n/* Assigns a block id from the range [0, num_histograms) to each data element\n in data[0..length) and fills in block_id[0..length) with the assigned values.\n Returns the number of blocks, i.e. one plus the number of block switches. */\nstatic size_t FN(FindBlocks)(const DataType* data, const size_t length,\n const double block_switch_bitcost,\n const size_t num_histograms,\n const HistogramType* histograms,\n double* insert_cost,\n double* cost,\n uint8_t* switch_signal,\n uint8_t* block_id) {\n const size_t alphabet_size = FN(HistogramDataSize)();\n const size_t bitmap_len = (num_histograms + 7) >> 3;\n size_t num_blocks = 1;\n size_t byte_ix;\n size_t i;\n size_t j;\n BROTLI_DCHECK(num_histograms <= 256);\n\n /* Trivial case: single histogram -> single block type. */\n if (num_histograms <= 1) {\n for (i = 0; i < length; ++i) {\n block_id[i] = 0;\n }\n return 1;\n }\n\n /* Fill bitcost for each symbol of all histograms.\n * Non-existing symbol cost: 2 + log2(total_count).\n * Regular symbol cost: -log2(symbol_count / total_count). */\n memset(insert_cost, 0,\n sizeof(insert_cost[0]) * alphabet_size * num_histograms);\n for (i = 0; i < num_histograms; ++i) {\n insert_cost[i] = FastLog2((uint32_t)histograms[i].total_count_);\n }\n for (i = alphabet_size; i != 0;) {\n /* Reverse order to use the 0-th row as a temporary storage. */\n --i;\n for (j = 0; j < num_histograms; ++j) {\n insert_cost[i * num_histograms + j] =\n insert_cost[j] - BitCost(histograms[j].data_[i]);\n }\n }\n\n /* After each iteration of this loop, cost[k] will contain the difference\n between the minimum cost of arriving at the current byte position using\n entropy code k, and the minimum cost of arriving at the current byte\n position. This difference is capped at the block switch cost, and if it\n reaches block switch cost, it means that when we trace back from the last\n position, we need to switch here. */\n memset(cost, 0, sizeof(cost[0]) * num_histograms);\n memset(switch_signal, 0, sizeof(switch_signal[0]) * length * bitmap_len);\n for (byte_ix = 0; byte_ix < length; ++byte_ix) {\n size_t ix = byte_ix * bitmap_len;\n size_t symbol = data[byte_ix];\n size_t insert_cost_ix = symbol * num_histograms;\n double min_cost = 1e99;\n double block_switch_cost = block_switch_bitcost;\n static const size_t prologue_length = 2000;\n static const double multiplier = 0.07 / 2000;\n size_t k;\n for (k = 0; k < num_histograms; ++k) {\n /* We are coding the symbol with entropy code k. */\n cost[k] += insert_cost[insert_cost_ix + k];\n if (cost[k] < min_cost) {\n min_cost = cost[k];\n block_id[byte_ix] = (uint8_t)k;\n }\n }\n /* More blocks for the beginning. */\n if (byte_ix < prologue_length) {\n block_switch_cost *= 0.77 + multiplier * (double)byte_ix;\n }\n for (k = 0; k < num_histograms; ++k) {\n cost[k] -= min_cost;\n if (cost[k] >= block_switch_cost) {\n const uint8_t mask = (uint8_t)(1u << (k & 7));\n cost[k] = block_switch_cost;\n BROTLI_DCHECK((k >> 3) < bitmap_len);\n switch_signal[ix + (k >> 3)] |= mask;\n }\n }\n }\n\n byte_ix = length - 1;\n { /* Trace back from the last position and switch at the marked places. */\n size_t ix = byte_ix * bitmap_len;\n uint8_t cur_id = block_id[byte_ix];\n while (byte_ix > 0) {\n const uint8_t mask = (uint8_t)(1u << (cur_id & 7));\n BROTLI_DCHECK(((size_t)cur_id >> 3) < bitmap_len);\n --byte_ix;\n ix -= bitmap_len;\n if (switch_signal[ix + (cur_id >> 3)] & mask) {\n if (cur_id != block_id[byte_ix]) {\n cur_id = block_id[byte_ix];\n ++num_blocks;\n }\n }\n block_id[byte_ix] = cur_id;\n }\n }\n return num_blocks;\n}\n\nstatic size_t FN(RemapBlockIds)(uint8_t* block_ids, const size_t length,\n uint16_t* new_id, const size_t num_histograms) {\n static const uint16_t kInvalidId = 256;\n uint16_t next_id = 0;\n size_t i;\n for (i = 0; i < num_histograms; ++i) {\n new_id[i] = kInvalidId;\n }\n for (i = 0; i < length; ++i) {\n BROTLI_DCHECK(block_ids[i] < num_histograms);\n if (new_id[block_ids[i]] == kInvalidId) {\n new_id[block_ids[i]] = next_id++;\n }\n }\n for (i = 0; i < length; ++i) {\n block_ids[i] = (uint8_t)new_id[block_ids[i]];\n BROTLI_DCHECK(block_ids[i] < num_histograms);\n }\n BROTLI_DCHECK(next_id <= num_histograms);\n return next_id;\n}\n\nstatic void FN(BuildBlockHistograms)(const DataType* data, const size_t length,\n const uint8_t* block_ids,\n const size_t num_histograms,\n HistogramType* histograms) {\n size_t i;\n FN(ClearHistograms)(histograms, num_histograms);\n for (i = 0; i < length; ++i) {\n FN(HistogramAdd)(&histograms[block_ids[i]], data[i]);\n }\n}\n\n/* Given the initial partitioning build partitioning with limited number\n * of histograms (and block types). */\nstatic void FN(ClusterBlocks)(MemoryManager* m,\n const DataType* data, const size_t length,\n const size_t num_blocks,\n uint8_t* block_ids,\n BlockSplit* split) {\n uint32_t* histogram_symbols = BROTLI_ALLOC(m, uint32_t, num_blocks);\n uint32_t* u32 =\n BROTLI_ALLOC(m, uint32_t, num_blocks + 4 * HISTOGRAMS_PER_BATCH);\n const size_t expected_num_clusters = CLUSTERS_PER_BATCH *\n (num_blocks + HISTOGRAMS_PER_BATCH - 1) / HISTOGRAMS_PER_BATCH;\n size_t all_histograms_size = 0;\n size_t all_histograms_capacity = expected_num_clusters;\n HistogramType* all_histograms =\n BROTLI_ALLOC(m, HistogramType, all_histograms_capacity);\n size_t cluster_size_size = 0;\n size_t cluster_size_capacity = expected_num_clusters;\n uint32_t* cluster_size = BROTLI_ALLOC(m, uint32_t, cluster_size_capacity);\n size_t num_clusters = 0;\n HistogramType* histograms = BROTLI_ALLOC(m, HistogramType,\n BROTLI_MIN(size_t, num_blocks, HISTOGRAMS_PER_BATCH));\n size_t max_num_pairs =\n HISTOGRAMS_PER_BATCH * HISTOGRAMS_PER_BATCH / 2;\n size_t pairs_capacity = max_num_pairs + 1;\n HistogramPair* pairs = BROTLI_ALLOC(m, HistogramPair, pairs_capacity);\n size_t pos = 0;\n uint32_t* clusters;\n size_t num_final_clusters;\n static const uint32_t kInvalidIndex = BROTLI_UINT32_MAX;\n uint32_t* new_index;\n size_t i;\n uint32_t* BROTLI_RESTRICT const sizes =\n u32 ? (u32 + 0 * HISTOGRAMS_PER_BATCH) : NULL;\n uint32_t* BROTLI_RESTRICT const new_clusters =\n u32 ? (u32 + 1 * HISTOGRAMS_PER_BATCH) : NULL;\n uint32_t* BROTLI_RESTRICT const symbols =\n u32 ? (u32 + 2 * HISTOGRAMS_PER_BATCH) : NULL;\n uint32_t* BROTLI_RESTRICT const remap =\n u32 ? (u32 + 3 * HISTOGRAMS_PER_BATCH) : NULL;\n uint32_t* BROTLI_RESTRICT const block_lengths =\n u32 ? (u32 + 4 * HISTOGRAMS_PER_BATCH) : NULL;\n /* TODO(eustas): move to arena? */\n HistogramType* tmp = BROTLI_ALLOC(m, HistogramType, 2);\n\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(histogram_symbols) ||\n BROTLI_IS_NULL(u32) || BROTLI_IS_NULL(all_histograms) ||\n BROTLI_IS_NULL(cluster_size) || BROTLI_IS_NULL(histograms) ||\n BROTLI_IS_NULL(pairs) || BROTLI_IS_NULL(tmp)) {\n return;\n }\n\n memset(u32, 0, (num_blocks + 4 * HISTOGRAMS_PER_BATCH) * sizeof(uint32_t));\n\n /* Calculate block lengths (convert repeating values -> series length). */\n {\n size_t block_idx = 0;\n for (i = 0; i < length; ++i) {\n BROTLI_DCHECK(block_idx < num_blocks);\n ++block_lengths[block_idx];\n if (i + 1 == length || block_ids[i] != block_ids[i + 1]) {\n ++block_idx;\n }\n }\n BROTLI_DCHECK(block_idx == num_blocks);\n }\n\n /* Pre-cluster blocks (cluster batches). */\n for (i = 0; i < num_blocks; i += HISTOGRAMS_PER_BATCH) {\n const size_t num_to_combine =\n BROTLI_MIN(size_t, num_blocks - i, HISTOGRAMS_PER_BATCH);\n size_t num_new_clusters;\n size_t j;\n for (j = 0; j < num_to_combine; ++j) {\n size_t k;\n size_t block_length = block_lengths[i + j];\n FN(HistogramClear)(&histograms[j]);\n for (k = 0; k < block_length; ++k) {\n FN(HistogramAdd)(&histograms[j], data[pos++]);\n }\n histograms[j].bit_cost_ = FN(BrotliPopulationCost)(&histograms[j]);\n new_clusters[j] = (uint32_t)j;\n symbols[j] = (uint32_t)j;\n sizes[j] = 1;\n }\n num_new_clusters = FN(BrotliHistogramCombine)(\n histograms, tmp, sizes, symbols, new_clusters, pairs, num_to_combine,\n num_to_combine, HISTOGRAMS_PER_BATCH, max_num_pairs);\n BROTLI_ENSURE_CAPACITY(m, HistogramType, all_histograms,\n all_histograms_capacity, all_histograms_size + num_new_clusters);\n BROTLI_ENSURE_CAPACITY(m, uint32_t, cluster_size,\n cluster_size_capacity, cluster_size_size + num_new_clusters);\n if (BROTLI_IS_OOM(m)) return;\n for (j = 0; j < num_new_clusters; ++j) {\n all_histograms[all_histograms_size++] = histograms[new_clusters[j]];\n cluster_size[cluster_size_size++] = sizes[new_clusters[j]];\n remap[new_clusters[j]] = (uint32_t)j;\n }\n for (j = 0; j < num_to_combine; ++j) {\n histogram_symbols[i + j] = (uint32_t)num_clusters + remap[symbols[j]];\n }\n num_clusters += num_new_clusters;\n BROTLI_DCHECK(num_clusters == cluster_size_size);\n BROTLI_DCHECK(num_clusters == all_histograms_size);\n }\n BROTLI_FREE(m, histograms);\n\n /* Final clustering. */\n max_num_pairs =\n BROTLI_MIN(size_t, 64 * num_clusters, (num_clusters / 2) * num_clusters);\n if (pairs_capacity < max_num_pairs + 1) {\n BROTLI_FREE(m, pairs);\n pairs = BROTLI_ALLOC(m, HistogramPair, max_num_pairs + 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(pairs)) return;\n }\n clusters = BROTLI_ALLOC(m, uint32_t, num_clusters);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(clusters)) return;\n for (i = 0; i < num_clusters; ++i) {\n clusters[i] = (uint32_t)i;\n }\n num_final_clusters = FN(BrotliHistogramCombine)(\n all_histograms, tmp, cluster_size, histogram_symbols, clusters, pairs,\n num_clusters, num_blocks, BROTLI_MAX_NUMBER_OF_BLOCK_TYPES,\n max_num_pairs);\n BROTLI_FREE(m, pairs);\n BROTLI_FREE(m, cluster_size);\n\n /* Assign blocks to final histograms. */\n new_index = BROTLI_ALLOC(m, uint32_t, num_clusters);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(new_index)) return;\n for (i = 0; i < num_clusters; ++i) new_index[i] = kInvalidIndex;\n pos = 0;\n {\n uint32_t next_index = 0;\n for (i = 0; i < num_blocks; ++i) {\n size_t j;\n uint32_t best_out;\n double best_bits;\n FN(HistogramClear)(tmp);\n for (j = 0; j < block_lengths[i]; ++j) {\n FN(HistogramAdd)(tmp, data[pos++]);\n }\n /* Among equally good histograms prefer last used. */\n /* TODO(eustas): should we give a block-switch discount here? */\n best_out = (i == 0) ? histogram_symbols[0] : histogram_symbols[i - 1];\n best_bits = FN(BrotliHistogramBitCostDistance)(\n tmp, &all_histograms[best_out], tmp + 1);\n for (j = 0; j < num_final_clusters; ++j) {\n const double cur_bits = FN(BrotliHistogramBitCostDistance)(\n tmp, &all_histograms[clusters[j]], tmp + 1);\n if (cur_bits < best_bits) {\n best_bits = cur_bits;\n best_out = clusters[j];\n }\n }\n histogram_symbols[i] = best_out;\n if (new_index[best_out] == kInvalidIndex) {\n new_index[best_out] = next_index++;\n }\n }\n }\n BROTLI_FREE(m, tmp);\n BROTLI_FREE(m, clusters);\n BROTLI_FREE(m, all_histograms);\n BROTLI_ENSURE_CAPACITY(\n m, uint8_t, split->types, split->types_alloc_size, num_blocks);\n BROTLI_ENSURE_CAPACITY(\n m, uint32_t, split->lengths, split->lengths_alloc_size, num_blocks);\n if (BROTLI_IS_OOM(m)) return;\n\n /* Rewrite final assignment to block-split. There might be less blocks\n * than |num_blocks| due to clustering. */\n {\n uint32_t cur_length = 0;\n size_t block_idx = 0;\n uint8_t max_type = 0;\n for (i = 0; i < num_blocks; ++i) {\n cur_length += block_lengths[i];\n if (i + 1 == num_blocks ||\n histogram_symbols[i] != histogram_symbols[i + 1]) {\n const uint8_t id = (uint8_t)new_index[histogram_symbols[i]];\n split->types[block_idx] = id;\n split->lengths[block_idx] = cur_length;\n max_type = BROTLI_MAX(uint8_t, max_type, id);\n cur_length = 0;\n ++block_idx;\n }\n }\n split->num_blocks = block_idx;\n split->num_types = (size_t)max_type + 1;\n }\n BROTLI_FREE(m, new_index);\n BROTLI_FREE(m, u32);\n BROTLI_FREE(m, histogram_symbols);\n}\n\n/* Create BlockSplit (partitioning) given the limits, estimates and \"effort\"\n * parameters.\n *\n * NB: max_histograms is often less than number of histograms allowed by format;\n * this is done intentionally, to save some \"space\" for context-aware\n * clustering (here entropy is estimated for context-free symbols). */\nstatic void FN(SplitByteVector)(MemoryManager* m,\n const DataType* data, const size_t length,\n const size_t symbols_per_histogram,\n const size_t max_histograms,\n const size_t sampling_stride_length,\n const double block_switch_cost,\n const BrotliEncoderParams* params,\n BlockSplit* split) {\n const size_t data_size = FN(HistogramDataSize)();\n HistogramType* histograms;\n HistogramType* tmp;\n /* Calculate number of histograms; initial estimate is one histogram per\n * specified amount of symbols; however, this value is capped. */\n size_t num_histograms = length / symbols_per_histogram + 1;\n if (num_histograms > max_histograms) {\n num_histograms = max_histograms;\n }\n\n /* Corner case: no input. */\n if (length == 0) {\n split->num_types = 1;\n return;\n }\n\n if (length < kMinLengthForBlockSplitting) {\n BROTLI_ENSURE_CAPACITY(m, uint8_t,\n split->types, split->types_alloc_size, split->num_blocks + 1);\n BROTLI_ENSURE_CAPACITY(m, uint32_t,\n split->lengths, split->lengths_alloc_size, split->num_blocks + 1);\n if (BROTLI_IS_OOM(m)) return;\n split->num_types = 1;\n split->types[split->num_blocks] = 0;\n split->lengths[split->num_blocks] = (uint32_t)length;\n split->num_blocks++;\n return;\n }\n histograms = BROTLI_ALLOC(m, HistogramType, num_histograms + 1);\n tmp = histograms + num_histograms;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(histograms)) return;\n /* Find good entropy codes. */\n FN(InitialEntropyCodes)(data, length,\n sampling_stride_length,\n num_histograms, histograms);\n FN(RefineEntropyCodes)(data, length,\n sampling_stride_length,\n num_histograms, histograms, tmp);\n {\n /* Find a good path through literals with the good entropy codes. */\n uint8_t* block_ids = BROTLI_ALLOC(m, uint8_t, length);\n size_t num_blocks = 0;\n const size_t bitmaplen = (num_histograms + 7) >> 3;\n double* insert_cost = BROTLI_ALLOC(m, double, data_size * num_histograms);\n double* cost = BROTLI_ALLOC(m, double, num_histograms);\n uint8_t* switch_signal = BROTLI_ALLOC(m, uint8_t, length * bitmaplen);\n uint16_t* new_id = BROTLI_ALLOC(m, uint16_t, num_histograms);\n const size_t iters = params->quality < HQ_ZOPFLIFICATION_QUALITY ? 3 : 10;\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(block_ids) ||\n BROTLI_IS_NULL(insert_cost) || BROTLI_IS_NULL(cost) ||\n BROTLI_IS_NULL(switch_signal) || BROTLI_IS_NULL(new_id)) {\n return;\n }\n for (i = 0; i < iters; ++i) {\n num_blocks = FN(FindBlocks)(data, length,\n block_switch_cost,\n num_histograms, histograms,\n insert_cost, cost, switch_signal,\n block_ids);\n num_histograms = FN(RemapBlockIds)(block_ids, length,\n new_id, num_histograms);\n FN(BuildBlockHistograms)(data, length, block_ids,\n num_histograms, histograms);\n }\n BROTLI_FREE(m, insert_cost);\n BROTLI_FREE(m, cost);\n BROTLI_FREE(m, switch_signal);\n BROTLI_FREE(m, new_id);\n BROTLI_FREE(m, histograms);\n FN(ClusterBlocks)(m, data, length, num_blocks, block_ids, split);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, block_ids);\n }\n}\n\n#undef HistogramType\n" }, { "path": "c/enc/brotli_bit_stream.c", "content": "/* Copyright 2014 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Brotli bit stream functions to support the low level format. There are no\n compression algorithms here, just the right ordering of bits to match the\n specs. */\n\n#include \"brotli_bit_stream.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"entropy_encode.h\"\n#include \"entropy_encode_static.h\"\n#include \"fast_log.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n#include \"write_bits.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define MAX_HUFFMAN_TREE_SIZE (2 * BROTLI_NUM_COMMAND_SYMBOLS + 1)\n/* The maximum size of Huffman dictionary for distances assuming that\n NPOSTFIX = 0 and NDIRECT = 0. */\n#define MAX_SIMPLE_DISTANCE_ALPHABET_SIZE \\\n BROTLI_DISTANCE_ALPHABET_SIZE(0, 0, BROTLI_LARGE_MAX_DISTANCE_BITS)\n/* MAX_SIMPLE_DISTANCE_ALPHABET_SIZE == 140 */\n\nstatic BROTLI_INLINE uint32_t BlockLengthPrefixCode(uint32_t len) {\n uint32_t code = (len >= 177) ? (len >= 753 ? 20 : 14) : (len >= 41 ? 7 : 0);\n while (code < (BROTLI_NUM_BLOCK_LEN_SYMBOLS - 1) &&\n len >= _kBrotliPrefixCodeRanges[code + 1].offset) ++code;\n return code;\n}\n\nstatic BROTLI_INLINE void GetBlockLengthPrefixCode(uint32_t len, size_t* code,\n uint32_t* n_extra, uint32_t* extra) {\n *code = BlockLengthPrefixCode(len);\n *n_extra = _kBrotliPrefixCodeRanges[*code].nbits;\n *extra = len - _kBrotliPrefixCodeRanges[*code].offset;\n}\n\ntypedef struct BlockTypeCodeCalculator {\n size_t last_type;\n size_t second_last_type;\n} BlockTypeCodeCalculator;\n\nstatic void InitBlockTypeCodeCalculator(BlockTypeCodeCalculator* self) {\n self->last_type = 1;\n self->second_last_type = 0;\n}\n\nstatic BROTLI_INLINE size_t NextBlockTypeCode(\n BlockTypeCodeCalculator* calculator, uint8_t type) {\n size_t type_code = (type == calculator->last_type + 1) ? 1u :\n (type == calculator->second_last_type) ? 0u : type + 2u;\n calculator->second_last_type = calculator->last_type;\n calculator->last_type = type;\n return type_code;\n}\n\n/* |nibblesbits| represents the 2 bits to encode MNIBBLES (0-3)\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nstatic void BrotliEncodeMlen(size_t length, uint64_t* bits,\n size_t* numbits, uint64_t* nibblesbits) {\n size_t lg = (length == 1) ? 1 : Log2FloorNonZero((uint32_t)(length - 1)) + 1;\n size_t mnibbles = (lg < 16 ? 16 : (lg + 3)) / 4;\n BROTLI_DCHECK(length > 0);\n BROTLI_DCHECK(length <= (1 << 24));\n BROTLI_DCHECK(lg <= 24);\n *nibblesbits = mnibbles - 4;\n *numbits = mnibbles * 4;\n *bits = length - 1;\n}\n\nstatic BROTLI_INLINE void StoreCommandExtra(\n const Command* cmd, size_t* storage_ix, uint8_t* storage) {\n uint32_t copylen_code = CommandCopyLenCode(cmd);\n uint16_t inscode = GetInsertLengthCode(cmd->insert_len_);\n uint16_t copycode = GetCopyLengthCode(copylen_code);\n uint32_t insnumextra = GetInsertExtra(inscode);\n uint64_t insextraval = cmd->insert_len_ - GetInsertBase(inscode);\n uint64_t copyextraval = copylen_code - GetCopyBase(copycode);\n uint64_t bits = (copyextraval << insnumextra) | insextraval;\n BrotliWriteBits(\n insnumextra + GetCopyExtra(copycode), bits, storage_ix, storage);\n}\n\n/* Data structure that stores almost everything that is needed to encode each\n block switch command. */\ntypedef struct BlockSplitCode {\n BlockTypeCodeCalculator type_code_calculator;\n uint8_t type_depths[BROTLI_MAX_BLOCK_TYPE_SYMBOLS];\n uint16_t type_bits[BROTLI_MAX_BLOCK_TYPE_SYMBOLS];\n uint8_t length_depths[BROTLI_NUM_BLOCK_LEN_SYMBOLS];\n uint16_t length_bits[BROTLI_NUM_BLOCK_LEN_SYMBOLS];\n} BlockSplitCode;\n\n/* Stores a number between 0 and 255. */\nstatic void StoreVarLenUint8(size_t n, size_t* storage_ix, uint8_t* storage) {\n if (n == 0) {\n BrotliWriteBits(1, 0, storage_ix, storage);\n } else {\n size_t nbits = Log2FloorNonZero(n);\n BrotliWriteBits(1, 1, storage_ix, storage);\n BrotliWriteBits(3, nbits, storage_ix, storage);\n BrotliWriteBits(nbits, n - ((size_t)1 << nbits), storage_ix, storage);\n }\n}\n\n/* Stores the compressed meta-block header.\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nstatic void StoreCompressedMetaBlockHeader(BROTLI_BOOL is_final_block,\n size_t length,\n size_t* storage_ix,\n uint8_t* storage) {\n uint64_t lenbits;\n size_t nlenbits;\n uint64_t nibblesbits;\n\n /* Write ISLAST bit. */\n BrotliWriteBits(1, (uint64_t)is_final_block, storage_ix, storage);\n /* Write ISEMPTY bit. */\n if (is_final_block) {\n BrotliWriteBits(1, 0, storage_ix, storage);\n }\n\n BrotliEncodeMlen(length, &lenbits, &nlenbits, &nibblesbits);\n BrotliWriteBits(2, nibblesbits, storage_ix, storage);\n BrotliWriteBits(nlenbits, lenbits, storage_ix, storage);\n\n if (!is_final_block) {\n /* Write ISUNCOMPRESSED bit. */\n BrotliWriteBits(1, 0, storage_ix, storage);\n }\n}\n\n/* Stores the uncompressed meta-block header.\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nstatic void BrotliStoreUncompressedMetaBlockHeader(size_t length,\n size_t* storage_ix,\n uint8_t* storage) {\n uint64_t lenbits;\n size_t nlenbits;\n uint64_t nibblesbits;\n\n /* Write ISLAST bit.\n Uncompressed block cannot be the last one, so set to 0. */\n BrotliWriteBits(1, 0, storage_ix, storage);\n BrotliEncodeMlen(length, &lenbits, &nlenbits, &nibblesbits);\n BrotliWriteBits(2, nibblesbits, storage_ix, storage);\n BrotliWriteBits(nlenbits, lenbits, storage_ix, storage);\n /* Write ISUNCOMPRESSED bit. */\n BrotliWriteBits(1, 1, storage_ix, storage);\n}\n\nstatic void BrotliStoreHuffmanTreeOfHuffmanTreeToBitMask(\n const int num_codes, const uint8_t* code_length_bitdepth,\n size_t* storage_ix, uint8_t* storage) {\n static const BROTLI_MODEL(\"small\")\n uint8_t kStorageOrder[BROTLI_CODE_LENGTH_CODES] = {\n 1, 2, 3, 4, 0, 5, 17, 6, 16, 7, 8, 9, 10, 11, 12, 13, 14, 15\n };\n /* The bit lengths of the Huffman code over the code length alphabet\n are compressed with the following static Huffman code:\n Symbol Code\n ------ ----\n 0 00\n 1 1110\n 2 110\n 3 01\n 4 10\n 5 1111 */\n static const BROTLI_MODEL(\"small\")\n uint8_t kHuffmanBitLengthHuffmanCodeSymbols[6] = {\n 0, 7, 3, 2, 1, 15\n };\n static const BROTLI_MODEL(\"small\")\n uint8_t kHuffmanBitLengthHuffmanCodeBitLengths[6] = {\n 2, 4, 3, 2, 2, 4\n };\n\n size_t skip_some = 0; /* skips none. */\n\n /* Throw away trailing zeros: */\n size_t codes_to_store = BROTLI_CODE_LENGTH_CODES;\n if (num_codes > 1) {\n for (; codes_to_store > 0; --codes_to_store) {\n if (code_length_bitdepth[kStorageOrder[codes_to_store - 1]] != 0) {\n break;\n }\n }\n }\n if (code_length_bitdepth[kStorageOrder[0]] == 0 &&\n code_length_bitdepth[kStorageOrder[1]] == 0) {\n skip_some = 2; /* skips two. */\n if (code_length_bitdepth[kStorageOrder[2]] == 0) {\n skip_some = 3; /* skips three. */\n }\n }\n BrotliWriteBits(2, skip_some, storage_ix, storage);\n {\n size_t i;\n for (i = skip_some; i < codes_to_store; ++i) {\n size_t l = code_length_bitdepth[kStorageOrder[i]];\n BrotliWriteBits(kHuffmanBitLengthHuffmanCodeBitLengths[l],\n kHuffmanBitLengthHuffmanCodeSymbols[l], storage_ix, storage);\n }\n }\n}\n\nstatic void BrotliStoreHuffmanTreeToBitMask(\n const size_t huffman_tree_size, const uint8_t* huffman_tree,\n const uint8_t* huffman_tree_extra_bits, const uint8_t* code_length_bitdepth,\n const uint16_t* code_length_bitdepth_symbols,\n size_t* BROTLI_RESTRICT storage_ix, uint8_t* BROTLI_RESTRICT storage) {\n size_t i;\n for (i = 0; i < huffman_tree_size; ++i) {\n size_t ix = huffman_tree[i];\n BrotliWriteBits(code_length_bitdepth[ix], code_length_bitdepth_symbols[ix],\n storage_ix, storage);\n /* Extra bits */\n switch (ix) {\n case BROTLI_REPEAT_PREVIOUS_CODE_LENGTH:\n BrotliWriteBits(2, huffman_tree_extra_bits[i], storage_ix, storage);\n break;\n case BROTLI_REPEAT_ZERO_CODE_LENGTH:\n BrotliWriteBits(3, huffman_tree_extra_bits[i], storage_ix, storage);\n break;\n }\n }\n}\n\nstatic void StoreSimpleHuffmanTree(const uint8_t* depths,\n size_t symbols[4],\n size_t num_symbols,\n size_t max_bits,\n size_t* storage_ix, uint8_t* storage) {\n /* value of 1 indicates a simple Huffman code */\n BrotliWriteBits(2, 1, storage_ix, storage);\n BrotliWriteBits(2, num_symbols - 1, storage_ix, storage); /* NSYM - 1 */\n\n {\n /* Sort */\n size_t i;\n for (i = 0; i < num_symbols; i++) {\n size_t j;\n for (j = i + 1; j < num_symbols; j++) {\n if (depths[symbols[j]] < depths[symbols[i]]) {\n BROTLI_SWAP(size_t, symbols, j, i);\n }\n }\n }\n }\n\n if (num_symbols == 2) {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n } else if (num_symbols == 3) {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[2], storage_ix, storage);\n } else {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[2], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[3], storage_ix, storage);\n /* tree-select */\n BrotliWriteBits(1, depths[symbols[0]] == 1 ? 1 : 0, storage_ix, storage);\n }\n}\n\n/* num = alphabet size\n depths = symbol depths */\nvoid BrotliStoreHuffmanTree(const uint8_t* depths, size_t num,\n HuffmanTree* tree,\n size_t* storage_ix, uint8_t* storage) {\n /* Write the Huffman tree into the brotli-representation.\n The command alphabet is the largest, so this allocation will fit all\n alphabets. */\n /* TODO(eustas): fix me */\n uint8_t huffman_tree[BROTLI_NUM_COMMAND_SYMBOLS];\n uint8_t huffman_tree_extra_bits[BROTLI_NUM_COMMAND_SYMBOLS];\n size_t huffman_tree_size = 0;\n uint8_t code_length_bitdepth[BROTLI_CODE_LENGTH_CODES] = { 0 };\n uint16_t code_length_bitdepth_symbols[BROTLI_CODE_LENGTH_CODES];\n uint32_t huffman_tree_histogram[BROTLI_CODE_LENGTH_CODES] = { 0 };\n size_t i;\n int num_codes = 0;\n size_t code = 0;\n\n BROTLI_DCHECK(num <= BROTLI_NUM_COMMAND_SYMBOLS);\n\n BrotliWriteHuffmanTree(depths, num, &huffman_tree_size, huffman_tree,\n huffman_tree_extra_bits);\n\n /* Calculate the statistics of the Huffman tree in brotli-representation. */\n for (i = 0; i < huffman_tree_size; ++i) {\n ++huffman_tree_histogram[huffman_tree[i]];\n }\n\n for (i = 0; i < BROTLI_CODE_LENGTH_CODES; ++i) {\n if (huffman_tree_histogram[i]) {\n if (num_codes == 0) {\n code = i;\n num_codes = 1;\n } else if (num_codes == 1) {\n num_codes = 2;\n break;\n }\n }\n }\n\n /* Calculate another Huffman tree to use for compressing both the\n earlier Huffman tree with. */\n BrotliCreateHuffmanTree(huffman_tree_histogram, BROTLI_CODE_LENGTH_CODES,\n 5, tree, code_length_bitdepth);\n BrotliConvertBitDepthsToSymbols(code_length_bitdepth,\n BROTLI_CODE_LENGTH_CODES,\n code_length_bitdepth_symbols);\n\n /* Now, we have all the data, let's start storing it */\n BrotliStoreHuffmanTreeOfHuffmanTreeToBitMask(num_codes, code_length_bitdepth,\n storage_ix, storage);\n\n if (num_codes == 1) {\n code_length_bitdepth[code] = 0;\n }\n\n /* Store the real Huffman tree now. */\n BrotliStoreHuffmanTreeToBitMask(huffman_tree_size,\n huffman_tree,\n huffman_tree_extra_bits,\n code_length_bitdepth,\n code_length_bitdepth_symbols,\n storage_ix, storage);\n}\n\n/* Builds a Huffman tree from histogram[0:length] into depth[0:length] and\n bits[0:length] and stores the encoded tree to the bit stream. */\nstatic void BuildAndStoreHuffmanTree(const uint32_t* histogram,\n const size_t histogram_length,\n const size_t alphabet_size,\n HuffmanTree* tree,\n uint8_t* depth,\n uint16_t* bits,\n size_t* storage_ix,\n uint8_t* storage) {\n size_t count = 0;\n size_t s4[4] = { 0 };\n size_t i;\n size_t max_bits = 0;\n for (i = 0; i < histogram_length; i++) {\n if (histogram[i]) {\n if (count < 4) {\n s4[count] = i;\n } else if (count > 4) {\n break;\n }\n count++;\n }\n }\n\n {\n size_t max_bits_counter = alphabet_size - 1;\n while (max_bits_counter) {\n max_bits_counter >>= 1;\n ++max_bits;\n }\n }\n\n if (count <= 1) {\n BrotliWriteBits(4, 1, storage_ix, storage);\n BrotliWriteBits(max_bits, s4[0], storage_ix, storage);\n depth[s4[0]] = 0;\n bits[s4[0]] = 0;\n return;\n }\n\n memset(depth, 0, histogram_length * sizeof(depth[0]));\n BrotliCreateHuffmanTree(histogram, histogram_length, 15, tree, depth);\n BrotliConvertBitDepthsToSymbols(depth, histogram_length, bits);\n\n if (count <= 4) {\n StoreSimpleHuffmanTree(depth, s4, count, max_bits, storage_ix, storage);\n } else {\n BrotliStoreHuffmanTree(depth, histogram_length, tree, storage_ix, storage);\n }\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL SortHuffmanTree(\n const HuffmanTree* v0, const HuffmanTree* v1) {\n return TO_BROTLI_BOOL(v0->total_count_ < v1->total_count_);\n}\n\nvoid BrotliBuildAndStoreHuffmanTreeFast(HuffmanTree* tree,\n const uint32_t* histogram,\n const size_t histogram_total,\n const size_t max_bits,\n uint8_t* depth, uint16_t* bits,\n size_t* storage_ix,\n uint8_t* storage) {\n size_t count = 0;\n size_t symbols[4] = { 0 };\n size_t length = 0;\n size_t total = histogram_total;\n while (total != 0) {\n if (histogram[length]) {\n if (count < 4) {\n symbols[count] = length;\n }\n ++count;\n total -= histogram[length];\n }\n ++length;\n }\n\n if (count <= 1) {\n BrotliWriteBits(4, 1, storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n depth[symbols[0]] = 0;\n bits[symbols[0]] = 0;\n return;\n }\n\n memset(depth, 0, length * sizeof(depth[0]));\n {\n uint32_t count_limit;\n for (count_limit = 1; ; count_limit *= 2) {\n HuffmanTree* node = tree;\n size_t l;\n for (l = length; l != 0;) {\n --l;\n if (histogram[l]) {\n if (BROTLI_PREDICT_TRUE(histogram[l] >= count_limit)) {\n InitHuffmanTree(node, histogram[l], -1, (int16_t)l);\n } else {\n InitHuffmanTree(node, count_limit, -1, (int16_t)l);\n }\n ++node;\n }\n }\n {\n const int n = (int)(node - tree);\n HuffmanTree sentinel;\n int i = 0; /* Points to the next leaf node. */\n int j = n + 1; /* Points to the next non-leaf node. */\n int k;\n\n SortHuffmanTreeItems(tree, (size_t)n, SortHuffmanTree);\n /* The nodes are:\n [0, n): the sorted leaf nodes that we start with.\n [n]: we add a sentinel here.\n [n + 1, 2n): new parent nodes are added here, starting from\n (n+1). These are naturally in ascending order.\n [2n]: we add a sentinel at the end as well.\n There will be (2n+1) elements at the end. */\n InitHuffmanTree(&sentinel, BROTLI_UINT32_MAX, -1, -1);\n *node++ = sentinel;\n *node++ = sentinel;\n\n for (k = n - 1; k > 0; --k) {\n int left, right;\n if (tree[i].total_count_ <= tree[j].total_count_) {\n left = i;\n ++i;\n } else {\n left = j;\n ++j;\n }\n if (tree[i].total_count_ <= tree[j].total_count_) {\n right = i;\n ++i;\n } else {\n right = j;\n ++j;\n }\n /* The sentinel node becomes the parent node. */\n node[-1].total_count_ =\n tree[left].total_count_ + tree[right].total_count_;\n node[-1].index_left_ = (int16_t)left;\n node[-1].index_right_or_value_ = (int16_t)right;\n /* Add back the last sentinel node. */\n *node++ = sentinel;\n }\n if (BrotliSetDepth(2 * n - 1, tree, depth, 14)) {\n /* We need to pack the Huffman tree in 14 bits. If this was not\n successful, add fake entities to the lowest values and retry. */\n break;\n }\n }\n }\n }\n BrotliConvertBitDepthsToSymbols(depth, length, bits);\n if (count <= 4) {\n size_t i;\n /* value of 1 indicates a simple Huffman code */\n BrotliWriteBits(2, 1, storage_ix, storage);\n BrotliWriteBits(2, count - 1, storage_ix, storage); /* NSYM - 1 */\n\n /* Sort */\n for (i = 0; i < count; i++) {\n size_t j;\n for (j = i + 1; j < count; j++) {\n if (depth[symbols[j]] < depth[symbols[i]]) {\n BROTLI_SWAP(size_t, symbols, j, i);\n }\n }\n }\n\n if (count == 2) {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n } else if (count == 3) {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[2], storage_ix, storage);\n } else {\n BrotliWriteBits(max_bits, symbols[0], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[1], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[2], storage_ix, storage);\n BrotliWriteBits(max_bits, symbols[3], storage_ix, storage);\n /* tree-select */\n BrotliWriteBits(1, depth[symbols[0]] == 1 ? 1 : 0, storage_ix, storage);\n }\n } else {\n uint8_t previous_value = 8;\n size_t i;\n /* Complex Huffman Tree */\n StoreStaticCodeLengthCode(storage_ix, storage);\n\n /* Actual RLE coding. */\n for (i = 0; i < length;) {\n const uint8_t value = depth[i];\n size_t reps = 1;\n size_t k;\n for (k = i + 1; k < length && depth[k] == value; ++k) {\n ++reps;\n }\n i += reps;\n if (value == 0) {\n BrotliWriteBits(kZeroRepsDepth[reps], kZeroRepsBits[reps],\n storage_ix, storage);\n } else {\n if (previous_value != value) {\n BrotliWriteBits(kCodeLengthDepth[value], kCodeLengthBits[value],\n storage_ix, storage);\n --reps;\n }\n if (reps < 3) {\n while (reps != 0) {\n reps--;\n BrotliWriteBits(kCodeLengthDepth[value], kCodeLengthBits[value],\n storage_ix, storage);\n }\n } else {\n reps -= 3;\n BrotliWriteBits(kNonZeroRepsDepth[reps], kNonZeroRepsBits[reps],\n storage_ix, storage);\n }\n previous_value = value;\n }\n }\n }\n}\n\nstatic size_t IndexOf(const uint8_t* v, size_t v_size, uint8_t value) {\n size_t i = 0;\n for (; i < v_size; ++i) {\n if (v[i] == value) return i;\n }\n return i;\n}\n\nstatic void MoveToFront(uint8_t* v, size_t index) {\n uint8_t value = v[index];\n size_t i;\n for (i = index; i != 0; --i) {\n v[i] = v[i - 1];\n }\n v[0] = value;\n}\n\nstatic void MoveToFrontTransform(const uint32_t* BROTLI_RESTRICT v_in,\n const size_t v_size,\n uint32_t* v_out) {\n size_t i;\n uint8_t mtf[256];\n uint32_t max_value;\n if (v_size == 0) {\n return;\n }\n max_value = v_in[0];\n for (i = 1; i < v_size; ++i) {\n if (v_in[i] > max_value) max_value = v_in[i];\n }\n BROTLI_DCHECK(max_value < 256u);\n for (i = 0; i <= max_value; ++i) {\n mtf[i] = (uint8_t)i;\n }\n {\n size_t mtf_size = max_value + 1;\n for (i = 0; i < v_size; ++i) {\n size_t index = IndexOf(mtf, mtf_size, (uint8_t)v_in[i]);\n BROTLI_DCHECK(index < mtf_size);\n v_out[i] = (uint32_t)index;\n MoveToFront(mtf, index);\n }\n }\n}\n\n/* Finds runs of zeros in v[0..in_size) and replaces them with a prefix code of\n the run length plus extra bits (lower 9 bits is the prefix code and the rest\n are the extra bits). Non-zero values in v[] are shifted by\n *max_length_prefix. Will not create prefix codes bigger than the initial\n value of *max_run_length_prefix. The prefix code of run length L is simply\n Log2Floor(L) and the number of extra bits is the same as the prefix code. */\nstatic void RunLengthCodeZeros(const size_t in_size,\n uint32_t* BROTLI_RESTRICT v, size_t* BROTLI_RESTRICT out_size,\n uint32_t* BROTLI_RESTRICT max_run_length_prefix) {\n uint32_t max_reps = 0;\n size_t i;\n uint32_t max_prefix;\n for (i = 0; i < in_size;) {\n uint32_t reps = 0;\n for (; i < in_size && v[i] != 0; ++i) ;\n for (; i < in_size && v[i] == 0; ++i) {\n ++reps;\n }\n max_reps = BROTLI_MAX(uint32_t, reps, max_reps);\n }\n max_prefix = max_reps > 0 ? Log2FloorNonZero(max_reps) : 0;\n max_prefix = BROTLI_MIN(uint32_t, max_prefix, *max_run_length_prefix);\n *max_run_length_prefix = max_prefix;\n *out_size = 0;\n for (i = 0; i < in_size;) {\n BROTLI_DCHECK(*out_size <= i);\n if (v[i] != 0) {\n v[*out_size] = v[i] + *max_run_length_prefix;\n ++i;\n ++(*out_size);\n } else {\n uint32_t reps = 1;\n size_t k;\n for (k = i + 1; k < in_size && v[k] == 0; ++k) {\n ++reps;\n }\n i += reps;\n while (reps != 0) {\n if (reps < (2u << max_prefix)) {\n uint32_t run_length_prefix = Log2FloorNonZero(reps);\n const uint32_t extra_bits = reps - (1u << run_length_prefix);\n v[*out_size] = run_length_prefix + (extra_bits << 9);\n ++(*out_size);\n break;\n } else {\n const uint32_t extra_bits = (1u << max_prefix) - 1u;\n v[*out_size] = max_prefix + (extra_bits << 9);\n reps -= (2u << max_prefix) - 1u;\n ++(*out_size);\n }\n }\n }\n }\n}\n\n#define SYMBOL_BITS 9\n\ntypedef struct EncodeContextMapArena {\n uint32_t histogram[BROTLI_MAX_CONTEXT_MAP_SYMBOLS];\n uint8_t depths[BROTLI_MAX_CONTEXT_MAP_SYMBOLS];\n uint16_t bits[BROTLI_MAX_CONTEXT_MAP_SYMBOLS];\n} EncodeContextMapArena;\n\nstatic void EncodeContextMap(MemoryManager* m,\n EncodeContextMapArena* arena,\n const uint32_t* context_map,\n size_t context_map_size,\n size_t num_clusters,\n HuffmanTree* tree,\n size_t* storage_ix, uint8_t* storage) {\n size_t i;\n uint32_t* rle_symbols;\n uint32_t max_run_length_prefix = 6;\n size_t num_rle_symbols = 0;\n uint32_t* BROTLI_RESTRICT const histogram = arena->histogram;\n static const uint32_t kSymbolMask = (1u << SYMBOL_BITS) - 1u;\n uint8_t* BROTLI_RESTRICT const depths = arena->depths;\n uint16_t* BROTLI_RESTRICT const bits = arena->bits;\n\n StoreVarLenUint8(num_clusters - 1, storage_ix, storage);\n\n if (num_clusters == 1) {\n return;\n }\n\n rle_symbols = BROTLI_ALLOC(m, uint32_t, context_map_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(rle_symbols)) return;\n MoveToFrontTransform(context_map, context_map_size, rle_symbols);\n RunLengthCodeZeros(context_map_size, rle_symbols,\n &num_rle_symbols, &max_run_length_prefix);\n memset(histogram, 0, sizeof(arena->histogram));\n for (i = 0; i < num_rle_symbols; ++i) {\n ++histogram[rle_symbols[i] & kSymbolMask];\n }\n {\n BROTLI_BOOL use_rle = TO_BROTLI_BOOL(max_run_length_prefix > 0);\n BrotliWriteBits(1, (uint64_t)use_rle, storage_ix, storage);\n if (use_rle) {\n BrotliWriteBits(4, max_run_length_prefix - 1, storage_ix, storage);\n }\n }\n BuildAndStoreHuffmanTree(histogram, num_clusters + max_run_length_prefix,\n num_clusters + max_run_length_prefix,\n tree, depths, bits, storage_ix, storage);\n for (i = 0; i < num_rle_symbols; ++i) {\n const uint32_t rle_symbol = rle_symbols[i] & kSymbolMask;\n const uint32_t extra_bits_val = rle_symbols[i] >> SYMBOL_BITS;\n BrotliWriteBits(depths[rle_symbol], bits[rle_symbol], storage_ix, storage);\n if (rle_symbol > 0 && rle_symbol <= max_run_length_prefix) {\n BrotliWriteBits(rle_symbol, extra_bits_val, storage_ix, storage);\n }\n }\n BrotliWriteBits(1, 1, storage_ix, storage); /* use move-to-front */\n BROTLI_FREE(m, rle_symbols);\n}\n\n/* Stores the block switch command with index block_ix to the bit stream. */\nstatic BROTLI_INLINE void StoreBlockSwitch(BlockSplitCode* code,\n const uint32_t block_len,\n const uint8_t block_type,\n BROTLI_BOOL is_first_block,\n size_t* storage_ix,\n uint8_t* storage) {\n size_t typecode = NextBlockTypeCode(&code->type_code_calculator, block_type);\n size_t lencode;\n uint32_t len_nextra;\n uint32_t len_extra;\n if (!is_first_block) {\n BrotliWriteBits(code->type_depths[typecode], code->type_bits[typecode],\n storage_ix, storage);\n }\n GetBlockLengthPrefixCode(block_len, &lencode, &len_nextra, &len_extra);\n\n BrotliWriteBits(code->length_depths[lencode], code->length_bits[lencode],\n storage_ix, storage);\n BrotliWriteBits(len_nextra, len_extra, storage_ix, storage);\n}\n\n/* Builds a BlockSplitCode data structure from the block split given by the\n vector of block types and block lengths and stores it to the bit stream. */\nstatic void BuildAndStoreBlockSplitCode(const uint8_t* types,\n const uint32_t* lengths,\n const size_t num_blocks,\n const size_t num_types,\n HuffmanTree* tree,\n BlockSplitCode* code,\n size_t* storage_ix,\n uint8_t* storage) {\n uint32_t type_histo[BROTLI_MAX_BLOCK_TYPE_SYMBOLS];\n uint32_t length_histo[BROTLI_NUM_BLOCK_LEN_SYMBOLS];\n size_t i;\n BlockTypeCodeCalculator type_code_calculator;\n memset(type_histo, 0, (num_types + 2) * sizeof(type_histo[0]));\n memset(length_histo, 0, sizeof(length_histo));\n InitBlockTypeCodeCalculator(&type_code_calculator);\n for (i = 0; i < num_blocks; ++i) {\n size_t type_code = NextBlockTypeCode(&type_code_calculator, types[i]);\n if (i != 0) ++type_histo[type_code];\n ++length_histo[BlockLengthPrefixCode(lengths[i])];\n }\n StoreVarLenUint8(num_types - 1, storage_ix, storage);\n if (num_types > 1) { /* TODO(eustas): else? could StoreBlockSwitch occur? */\n BuildAndStoreHuffmanTree(&type_histo[0], num_types + 2, num_types + 2, tree,\n &code->type_depths[0], &code->type_bits[0],\n storage_ix, storage);\n BuildAndStoreHuffmanTree(&length_histo[0], BROTLI_NUM_BLOCK_LEN_SYMBOLS,\n BROTLI_NUM_BLOCK_LEN_SYMBOLS,\n tree, &code->length_depths[0],\n &code->length_bits[0], storage_ix, storage);\n StoreBlockSwitch(code, lengths[0], types[0], 1, storage_ix, storage);\n }\n}\n\n/* Stores a context map where the histogram type is always the block type. */\nstatic void StoreTrivialContextMap(EncodeContextMapArena* arena,\n size_t num_types,\n size_t context_bits,\n HuffmanTree* tree,\n size_t* storage_ix,\n uint8_t* storage) {\n StoreVarLenUint8(num_types - 1, storage_ix, storage);\n if (num_types > 1) {\n size_t repeat_code = context_bits - 1u;\n size_t repeat_bits = (1u << repeat_code) - 1u;\n size_t alphabet_size = num_types + repeat_code;\n uint32_t* BROTLI_RESTRICT const histogram = arena->histogram;\n uint8_t* BROTLI_RESTRICT const depths = arena->depths;\n uint16_t* BROTLI_RESTRICT const bits = arena->bits;\n size_t i;\n memset(histogram, 0, alphabet_size * sizeof(histogram[0]));\n /* Write RLEMAX. */\n BrotliWriteBits(1, 1, storage_ix, storage);\n BrotliWriteBits(4, repeat_code - 1, storage_ix, storage);\n histogram[repeat_code] = (uint32_t)num_types;\n histogram[0] = 1;\n for (i = context_bits; i < alphabet_size; ++i) {\n histogram[i] = 1;\n }\n BuildAndStoreHuffmanTree(histogram, alphabet_size, alphabet_size,\n tree, depths, bits, storage_ix, storage);\n for (i = 0; i < num_types; ++i) {\n size_t code = (i == 0 ? 0 : i + context_bits - 1);\n BrotliWriteBits(depths[code], bits[code], storage_ix, storage);\n BrotliWriteBits(\n depths[repeat_code], bits[repeat_code], storage_ix, storage);\n BrotliWriteBits(repeat_code, repeat_bits, storage_ix, storage);\n }\n /* Write IMTF (inverse-move-to-front) bit. */\n BrotliWriteBits(1, 1, storage_ix, storage);\n }\n}\n\n/* Manages the encoding of one block category (literal, command or distance). */\ntypedef struct BlockEncoder {\n size_t histogram_length_;\n size_t num_block_types_;\n const uint8_t* block_types_; /* Not owned. */\n const uint32_t* block_lengths_; /* Not owned. */\n size_t num_blocks_;\n BlockSplitCode block_split_code_;\n size_t block_ix_;\n size_t block_len_;\n size_t entropy_ix_;\n uint8_t* depths_;\n uint16_t* bits_;\n} BlockEncoder;\n\nstatic void InitBlockEncoder(BlockEncoder* self, size_t histogram_length,\n size_t num_block_types, const uint8_t* block_types,\n const uint32_t* block_lengths, const size_t num_blocks) {\n self->histogram_length_ = histogram_length;\n self->num_block_types_ = num_block_types;\n self->block_types_ = block_types;\n self->block_lengths_ = block_lengths;\n self->num_blocks_ = num_blocks;\n InitBlockTypeCodeCalculator(&self->block_split_code_.type_code_calculator);\n self->block_ix_ = 0;\n self->block_len_ = num_blocks == 0 ? 0 : block_lengths[0];\n self->entropy_ix_ = 0;\n self->depths_ = 0;\n self->bits_ = 0;\n}\n\nstatic void CleanupBlockEncoder(MemoryManager* m, BlockEncoder* self) {\n BROTLI_FREE(m, self->depths_);\n BROTLI_FREE(m, self->bits_);\n}\n\n/* Creates entropy codes of block lengths and block types and stores them\n to the bit stream. */\nstatic void BuildAndStoreBlockSwitchEntropyCodes(BlockEncoder* self,\n HuffmanTree* tree, size_t* storage_ix, uint8_t* storage) {\n BuildAndStoreBlockSplitCode(self->block_types_, self->block_lengths_,\n self->num_blocks_, self->num_block_types_, tree, &self->block_split_code_,\n storage_ix, storage);\n}\n\n/* Stores the next symbol with the entropy code of the current block type.\n Updates the block type and block length at block boundaries. */\nstatic void StoreSymbol(BlockEncoder* self, size_t symbol, size_t* storage_ix,\n uint8_t* storage) {\n if (self->block_len_ == 0) {\n size_t block_ix = ++self->block_ix_;\n uint32_t block_len = self->block_lengths_[block_ix];\n uint8_t block_type = self->block_types_[block_ix];\n self->block_len_ = block_len;\n self->entropy_ix_ = block_type * self->histogram_length_;\n StoreBlockSwitch(&self->block_split_code_, block_len, block_type, 0,\n storage_ix, storage);\n }\n --self->block_len_;\n {\n size_t ix = self->entropy_ix_ + symbol;\n BrotliWriteBits(self->depths_[ix], self->bits_[ix], storage_ix, storage);\n }\n}\n\n/* Stores the next symbol with the entropy code of the current block type and\n context value.\n Updates the block type and block length at block boundaries. */\nstatic void StoreSymbolWithContext(BlockEncoder* self, size_t symbol,\n size_t context, const uint32_t* context_map, size_t* storage_ix,\n uint8_t* storage, const size_t context_bits) {\n if (self->block_len_ == 0) {\n size_t block_ix = ++self->block_ix_;\n uint32_t block_len = self->block_lengths_[block_ix];\n uint8_t block_type = self->block_types_[block_ix];\n self->block_len_ = block_len;\n self->entropy_ix_ = (size_t)block_type << context_bits;\n StoreBlockSwitch(&self->block_split_code_, block_len, block_type, 0,\n storage_ix, storage);\n }\n --self->block_len_;\n {\n size_t histo_ix = context_map[self->entropy_ix_ + context];\n size_t ix = histo_ix * self->histogram_length_ + symbol;\n BrotliWriteBits(self->depths_[ix], self->bits_[ix], storage_ix, storage);\n }\n}\n\n#define FN(X) X ## Literal\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_encoder_inc.h\"\n#undef FN\n\n#define FN(X) X ## Command\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_encoder_inc.h\"\n#undef FN\n\n#define FN(X) X ## Distance\n/* NOLINTNEXTLINE(build/include) */\n#include \"block_encoder_inc.h\"\n#undef FN\n\nstatic void JumpToByteBoundary(size_t* storage_ix, uint8_t* storage) {\n *storage_ix = (*storage_ix + 7u) & ~7u;\n storage[*storage_ix >> 3] = 0;\n}\n\ntypedef struct StoreMetablockArena {\n BlockEncoder literal_enc;\n BlockEncoder command_enc;\n BlockEncoder distance_enc;\n EncodeContextMapArena context_map_arena;\n} StoreMetablockArena;\n\nvoid BrotliStoreMetaBlock(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n uint8_t prev_byte, uint8_t prev_byte2, BROTLI_BOOL is_last,\n const BrotliEncoderParams* params, ContextType literal_context_mode,\n const Command* commands, size_t n_commands, const MetaBlockSplit* mb,\n size_t* storage_ix, uint8_t* storage) {\n\n size_t pos = start_pos;\n size_t i;\n uint32_t num_distance_symbols = params->dist.alphabet_size_max;\n uint32_t num_effective_distance_symbols = params->dist.alphabet_size_limit;\n HuffmanTree* tree;\n ContextLut literal_context_lut = BROTLI_CONTEXT_LUT(literal_context_mode);\n StoreMetablockArena* arena = NULL;\n BlockEncoder* literal_enc = NULL;\n BlockEncoder* command_enc = NULL;\n BlockEncoder* distance_enc = NULL;\n const BrotliDistanceParams* dist = ¶ms->dist;\n BROTLI_DCHECK(\n num_effective_distance_symbols <= BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS);\n\n StoreCompressedMetaBlockHeader(is_last, length, storage_ix, storage);\n\n tree = BROTLI_ALLOC(m, HuffmanTree, MAX_HUFFMAN_TREE_SIZE);\n arena = BROTLI_ALLOC(m, StoreMetablockArena, 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(tree) || BROTLI_IS_NULL(arena)) return;\n literal_enc = &arena->literal_enc;\n command_enc = &arena->command_enc;\n distance_enc = &arena->distance_enc;\n InitBlockEncoder(literal_enc, BROTLI_NUM_LITERAL_SYMBOLS,\n mb->literal_split.num_types, mb->literal_split.types,\n mb->literal_split.lengths, mb->literal_split.num_blocks);\n InitBlockEncoder(command_enc, BROTLI_NUM_COMMAND_SYMBOLS,\n mb->command_split.num_types, mb->command_split.types,\n mb->command_split.lengths, mb->command_split.num_blocks);\n InitBlockEncoder(distance_enc, num_effective_distance_symbols,\n mb->distance_split.num_types, mb->distance_split.types,\n mb->distance_split.lengths, mb->distance_split.num_blocks);\n\n BuildAndStoreBlockSwitchEntropyCodes(literal_enc, tree, storage_ix, storage);\n BuildAndStoreBlockSwitchEntropyCodes(command_enc, tree, storage_ix, storage);\n BuildAndStoreBlockSwitchEntropyCodes(distance_enc, tree, storage_ix, storage);\n\n BrotliWriteBits(2, dist->distance_postfix_bits, storage_ix, storage);\n BrotliWriteBits(\n 4, dist->num_direct_distance_codes >> dist->distance_postfix_bits,\n storage_ix, storage);\n for (i = 0; i < mb->literal_split.num_types; ++i) {\n BrotliWriteBits(2, literal_context_mode, storage_ix, storage);\n }\n\n if (mb->literal_context_map_size == 0) {\n StoreTrivialContextMap(\n &arena->context_map_arena, mb->literal_histograms_size,\n BROTLI_LITERAL_CONTEXT_BITS, tree, storage_ix, storage);\n } else {\n EncodeContextMap(m, &arena->context_map_arena,\n mb->literal_context_map, mb->literal_context_map_size,\n mb->literal_histograms_size, tree, storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n }\n\n if (mb->distance_context_map_size == 0) {\n StoreTrivialContextMap(\n &arena->context_map_arena, mb->distance_histograms_size,\n BROTLI_DISTANCE_CONTEXT_BITS, tree, storage_ix, storage);\n } else {\n EncodeContextMap(m, &arena->context_map_arena,\n mb->distance_context_map, mb->distance_context_map_size,\n mb->distance_histograms_size, tree, storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n }\n\n BuildAndStoreEntropyCodesLiteral(m, literal_enc, mb->literal_histograms,\n mb->literal_histograms_size, BROTLI_NUM_LITERAL_SYMBOLS, tree,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n BuildAndStoreEntropyCodesCommand(m, command_enc, mb->command_histograms,\n mb->command_histograms_size, BROTLI_NUM_COMMAND_SYMBOLS, tree,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n BuildAndStoreEntropyCodesDistance(m, distance_enc, mb->distance_histograms,\n mb->distance_histograms_size, num_distance_symbols, tree,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, tree);\n\n for (i = 0; i < n_commands; ++i) {\n const Command cmd = commands[i];\n size_t cmd_code = cmd.cmd_prefix_;\n StoreSymbol(command_enc, cmd_code, storage_ix, storage);\n StoreCommandExtra(&cmd, storage_ix, storage);\n if (mb->literal_context_map_size == 0) {\n size_t j;\n for (j = cmd.insert_len_; j != 0; --j) {\n StoreSymbol(literal_enc, input[pos & mask], storage_ix, storage);\n ++pos;\n }\n } else {\n size_t j;\n for (j = cmd.insert_len_; j != 0; --j) {\n size_t context =\n BROTLI_CONTEXT(prev_byte, prev_byte2, literal_context_lut);\n uint8_t literal = input[pos & mask];\n StoreSymbolWithContext(literal_enc, literal, context,\n mb->literal_context_map, storage_ix, storage,\n BROTLI_LITERAL_CONTEXT_BITS);\n prev_byte2 = prev_byte;\n prev_byte = literal;\n ++pos;\n }\n }\n pos += CommandCopyLen(&cmd);\n if (CommandCopyLen(&cmd)) {\n prev_byte2 = input[(pos - 2) & mask];\n prev_byte = input[(pos - 1) & mask];\n if (cmd.cmd_prefix_ >= 128) {\n size_t dist_code = cmd.dist_prefix_ & 0x3FF;\n uint32_t distnumextra = cmd.dist_prefix_ >> 10;\n uint64_t distextra = cmd.dist_extra_;\n if (mb->distance_context_map_size == 0) {\n StoreSymbol(distance_enc, dist_code, storage_ix, storage);\n } else {\n size_t context = CommandDistanceContext(&cmd);\n StoreSymbolWithContext(distance_enc, dist_code, context,\n mb->distance_context_map, storage_ix, storage,\n BROTLI_DISTANCE_CONTEXT_BITS);\n }\n BrotliWriteBits(distnumextra, distextra, storage_ix, storage);\n }\n }\n }\n CleanupBlockEncoder(m, distance_enc);\n CleanupBlockEncoder(m, command_enc);\n CleanupBlockEncoder(m, literal_enc);\n BROTLI_FREE(m, arena);\n if (is_last) {\n JumpToByteBoundary(storage_ix, storage);\n }\n}\n\nstatic void BuildHistograms(const uint8_t* input,\n size_t start_pos,\n size_t mask,\n const Command* commands,\n size_t n_commands,\n HistogramLiteral* lit_histo,\n HistogramCommand* cmd_histo,\n HistogramDistance* dist_histo) {\n size_t pos = start_pos;\n size_t i;\n for (i = 0; i < n_commands; ++i) {\n const Command cmd = commands[i];\n size_t j;\n HistogramAddCommand(cmd_histo, cmd.cmd_prefix_);\n for (j = cmd.insert_len_; j != 0; --j) {\n HistogramAddLiteral(lit_histo, input[pos & mask]);\n ++pos;\n }\n pos += CommandCopyLen(&cmd);\n if (CommandCopyLen(&cmd) && cmd.cmd_prefix_ >= 128) {\n HistogramAddDistance(dist_histo, cmd.dist_prefix_ & 0x3FF);\n }\n }\n}\n\nstatic void StoreDataWithHuffmanCodes(const uint8_t* input,\n size_t start_pos,\n size_t mask,\n const Command* commands,\n size_t n_commands,\n const uint8_t* lit_depth,\n const uint16_t* lit_bits,\n const uint8_t* cmd_depth,\n const uint16_t* cmd_bits,\n const uint8_t* dist_depth,\n const uint16_t* dist_bits,\n size_t* storage_ix,\n uint8_t* storage) {\n size_t pos = start_pos;\n size_t i;\n for (i = 0; i < n_commands; ++i) {\n const Command cmd = commands[i];\n const size_t cmd_code = cmd.cmd_prefix_;\n size_t j;\n BrotliWriteBits(\n cmd_depth[cmd_code], cmd_bits[cmd_code], storage_ix, storage);\n StoreCommandExtra(&cmd, storage_ix, storage);\n for (j = cmd.insert_len_; j != 0; --j) {\n const uint8_t literal = input[pos & mask];\n BrotliWriteBits(\n lit_depth[literal], lit_bits[literal], storage_ix, storage);\n ++pos;\n }\n pos += CommandCopyLen(&cmd);\n if (CommandCopyLen(&cmd) && cmd.cmd_prefix_ >= 128) {\n const size_t dist_code = cmd.dist_prefix_ & 0x3FF;\n const uint32_t distnumextra = cmd.dist_prefix_ >> 10;\n const uint32_t distextra = cmd.dist_extra_;\n BrotliWriteBits(dist_depth[dist_code], dist_bits[dist_code],\n storage_ix, storage);\n BrotliWriteBits(distnumextra, distextra, storage_ix, storage);\n }\n }\n}\n\n/* TODO(eustas): pull alloc/dealloc to caller? */\ntypedef struct MetablockArena {\n HistogramLiteral lit_histo;\n HistogramCommand cmd_histo;\n HistogramDistance dist_histo;\n /* TODO(eustas): merge bits and depth? */\n uint8_t lit_depth[BROTLI_NUM_LITERAL_SYMBOLS];\n uint16_t lit_bits[BROTLI_NUM_LITERAL_SYMBOLS];\n uint8_t cmd_depth[BROTLI_NUM_COMMAND_SYMBOLS];\n uint16_t cmd_bits[BROTLI_NUM_COMMAND_SYMBOLS];\n uint8_t dist_depth[MAX_SIMPLE_DISTANCE_ALPHABET_SIZE];\n uint16_t dist_bits[MAX_SIMPLE_DISTANCE_ALPHABET_SIZE];\n HuffmanTree tree[MAX_HUFFMAN_TREE_SIZE];\n} MetablockArena;\n\nvoid BrotliStoreMetaBlockTrivial(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n BROTLI_BOOL is_last, const BrotliEncoderParams* params,\n const Command* commands, size_t n_commands,\n size_t* storage_ix, uint8_t* storage) {\n MetablockArena* arena = BROTLI_ALLOC(m, MetablockArena, 1);\n uint32_t num_distance_symbols = params->dist.alphabet_size_max;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(arena)) return;\n\n StoreCompressedMetaBlockHeader(is_last, length, storage_ix, storage);\n\n HistogramClearLiteral(&arena->lit_histo);\n HistogramClearCommand(&arena->cmd_histo);\n HistogramClearDistance(&arena->dist_histo);\n\n BuildHistograms(input, start_pos, mask, commands, n_commands,\n &arena->lit_histo, &arena->cmd_histo, &arena->dist_histo);\n\n BrotliWriteBits(13, 0, storage_ix, storage);\n\n BuildAndStoreHuffmanTree(arena->lit_histo.data_, BROTLI_NUM_LITERAL_SYMBOLS,\n BROTLI_NUM_LITERAL_SYMBOLS, arena->tree,\n arena->lit_depth, arena->lit_bits,\n storage_ix, storage);\n BuildAndStoreHuffmanTree(arena->cmd_histo.data_, BROTLI_NUM_COMMAND_SYMBOLS,\n BROTLI_NUM_COMMAND_SYMBOLS, arena->tree,\n arena->cmd_depth, arena->cmd_bits,\n storage_ix, storage);\n BuildAndStoreHuffmanTree(arena->dist_histo.data_,\n MAX_SIMPLE_DISTANCE_ALPHABET_SIZE,\n num_distance_symbols, arena->tree,\n arena->dist_depth, arena->dist_bits,\n storage_ix, storage);\n StoreDataWithHuffmanCodes(input, start_pos, mask, commands,\n n_commands, arena->lit_depth, arena->lit_bits,\n arena->cmd_depth, arena->cmd_bits,\n arena->dist_depth, arena->dist_bits,\n storage_ix, storage);\n BROTLI_FREE(m, arena);\n if (is_last) {\n JumpToByteBoundary(storage_ix, storage);\n }\n}\n\nvoid BrotliStoreMetaBlockFast(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n BROTLI_BOOL is_last, const BrotliEncoderParams* params,\n const Command* commands, size_t n_commands,\n size_t* storage_ix, uint8_t* storage) {\n MetablockArena* arena = BROTLI_ALLOC(m, MetablockArena, 1);\n uint32_t num_distance_symbols = params->dist.alphabet_size_max;\n uint32_t distance_alphabet_bits =\n Log2FloorNonZero(num_distance_symbols - 1) + 1;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(arena)) return;\n\n StoreCompressedMetaBlockHeader(is_last, length, storage_ix, storage);\n\n BrotliWriteBits(13, 0, storage_ix, storage);\n\n if (n_commands <= 128) {\n uint32_t histogram[BROTLI_NUM_LITERAL_SYMBOLS] = { 0 };\n size_t pos = start_pos;\n size_t num_literals = 0;\n size_t i;\n for (i = 0; i < n_commands; ++i) {\n const Command cmd = commands[i];\n size_t j;\n for (j = cmd.insert_len_; j != 0; --j) {\n ++histogram[input[pos & mask]];\n ++pos;\n }\n num_literals += cmd.insert_len_;\n pos += CommandCopyLen(&cmd);\n }\n BrotliBuildAndStoreHuffmanTreeFast(arena->tree, histogram, num_literals,\n /* max_bits = */ 8,\n arena->lit_depth, arena->lit_bits,\n storage_ix, storage);\n StoreStaticCommandHuffmanTree(storage_ix, storage);\n StoreStaticDistanceHuffmanTree(storage_ix, storage);\n StoreDataWithHuffmanCodes(input, start_pos, mask, commands,\n n_commands, arena->lit_depth, arena->lit_bits,\n kStaticCommandCodeDepth,\n kStaticCommandCodeBits,\n kStaticDistanceCodeDepth,\n kStaticDistanceCodeBits,\n storage_ix, storage);\n } else {\n HistogramClearLiteral(&arena->lit_histo);\n HistogramClearCommand(&arena->cmd_histo);\n HistogramClearDistance(&arena->dist_histo);\n BuildHistograms(input, start_pos, mask, commands, n_commands,\n &arena->lit_histo, &arena->cmd_histo, &arena->dist_histo);\n BrotliBuildAndStoreHuffmanTreeFast(arena->tree, arena->lit_histo.data_,\n arena->lit_histo.total_count_,\n /* max_bits = */ 8,\n arena->lit_depth, arena->lit_bits,\n storage_ix, storage);\n BrotliBuildAndStoreHuffmanTreeFast(arena->tree, arena->cmd_histo.data_,\n arena->cmd_histo.total_count_,\n /* max_bits = */ 10,\n arena->cmd_depth, arena->cmd_bits,\n storage_ix, storage);\n BrotliBuildAndStoreHuffmanTreeFast(arena->tree, arena->dist_histo.data_,\n arena->dist_histo.total_count_,\n /* max_bits = */\n distance_alphabet_bits,\n arena->dist_depth, arena->dist_bits,\n storage_ix, storage);\n StoreDataWithHuffmanCodes(input, start_pos, mask, commands,\n n_commands, arena->lit_depth, arena->lit_bits,\n arena->cmd_depth, arena->cmd_bits,\n arena->dist_depth, arena->dist_bits,\n storage_ix, storage);\n }\n\n BROTLI_FREE(m, arena);\n\n if (is_last) {\n JumpToByteBoundary(storage_ix, storage);\n }\n}\n\n/* This is for storing uncompressed blocks (simple raw storage of\n bytes-as-bytes). */\nvoid BrotliStoreUncompressedMetaBlock(BROTLI_BOOL is_final_block,\n const uint8_t* BROTLI_RESTRICT input,\n size_t position, size_t mask,\n size_t len,\n size_t* BROTLI_RESTRICT storage_ix,\n uint8_t* BROTLI_RESTRICT storage) {\n size_t masked_pos = position & mask;\n BrotliStoreUncompressedMetaBlockHeader(len, storage_ix, storage);\n JumpToByteBoundary(storage_ix, storage);\n\n if (masked_pos + len > mask + 1) {\n size_t len1 = mask + 1 - masked_pos;\n memcpy(&storage[*storage_ix >> 3], &input[masked_pos], len1);\n *storage_ix += len1 << 3;\n len -= len1;\n masked_pos = 0;\n }\n memcpy(&storage[*storage_ix >> 3], &input[masked_pos], len);\n *storage_ix += len << 3;\n\n /* We need to clear the next 4 bytes to continue to be\n compatible with BrotliWriteBits. */\n BrotliWriteBitsPrepareStorage(*storage_ix, storage);\n\n /* Since the uncompressed block itself may not be the final block, add an\n empty one after this. */\n if (is_final_block) {\n BrotliWriteBits(1, 1, storage_ix, storage); /* islast */\n BrotliWriteBits(1, 1, storage_ix, storage); /* isempty */\n JumpToByteBoundary(storage_ix, storage);\n }\n}\n\n#if defined(BROTLI_TEST)\nvoid BrotliGetBlockLengthPrefixCodeForTest(uint32_t len, size_t* code,\n uint32_t* n_extra, uint32_t* extra);\nvoid BrotliGetBlockLengthPrefixCodeForTest(uint32_t len, size_t* code,\n uint32_t* n_extra, uint32_t* extra) {\n GetBlockLengthPrefixCode(len, code, n_extra, extra);\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/brotli_bit_stream.h", "content": "/* Copyright 2014 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions to convert brotli-related data structures into the\n brotli bit stream. The functions here operate under\n assumption that there is enough space in the storage, i.e., there are\n no out-of-range checks anywhere.\n\n These functions do bit addressing into a byte array. The byte array\n is called \"storage\" and the index to the bit is called storage_ix\n in function arguments. */\n\n#ifndef BROTLI_ENC_BROTLI_BIT_STREAM_H_\n#define BROTLI_ENC_BROTLI_BIT_STREAM_H_\n\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"entropy_encode.h\"\n#include \"memory.h\"\n#include \"metablock.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* All Store functions here will use a storage_ix, which is always the bit\n position for the current storage. */\n\nBROTLI_INTERNAL void BrotliStoreHuffmanTree(const uint8_t* depths, size_t num,\n HuffmanTree* tree, size_t* storage_ix, uint8_t* storage);\n\nBROTLI_INTERNAL void BrotliBuildAndStoreHuffmanTreeFast(\n HuffmanTree* tree, const uint32_t* histogram, const size_t histogram_total,\n const size_t max_bits, uint8_t* depth, uint16_t* bits, size_t* storage_ix,\n uint8_t* storage);\n\n/* REQUIRES: length > 0 */\n/* REQUIRES: length <= (1 << 24) */\nBROTLI_INTERNAL void BrotliStoreMetaBlock(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n uint8_t prev_byte, uint8_t prev_byte2, BROTLI_BOOL is_last,\n const BrotliEncoderParams* params, ContextType literal_context_mode,\n const Command* commands, size_t n_commands, const MetaBlockSplit* mb,\n size_t* storage_ix, uint8_t* storage);\n\n/* Stores the meta-block without doing any block splitting, just collects\n one histogram per block category and uses that for entropy coding.\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nBROTLI_INTERNAL void BrotliStoreMetaBlockTrivial(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n BROTLI_BOOL is_last, const BrotliEncoderParams* params,\n const Command* commands, size_t n_commands,\n size_t* storage_ix, uint8_t* storage);\n\n/* Same as above, but uses static prefix codes for histograms with a only a few\n symbols, and uses static code length prefix codes for all other histograms.\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nBROTLI_INTERNAL void BrotliStoreMetaBlockFast(MemoryManager* m,\n const uint8_t* input, size_t start_pos, size_t length, size_t mask,\n BROTLI_BOOL is_last, const BrotliEncoderParams* params,\n const Command* commands, size_t n_commands,\n size_t* storage_ix, uint8_t* storage);\n\n/* This is for storing uncompressed blocks (simple raw storage of\n bytes-as-bytes).\n REQUIRES: length > 0\n REQUIRES: length <= (1 << 24) */\nBROTLI_INTERNAL void BrotliStoreUncompressedMetaBlock(\n BROTLI_BOOL is_final_block, const uint8_t* BROTLI_RESTRICT input,\n size_t position, size_t mask, size_t len,\n size_t* BROTLI_RESTRICT storage_ix, uint8_t* BROTLI_RESTRICT storage);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_BROTLI_BIT_STREAM_H_ */\n" }, { "path": "c/enc/cluster.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions for clustering similar histograms together. */\n\n#include \"cluster.h\"\n\n#include \"../common/platform.h\"\n#include \"bit_cost.h\" /* BrotliPopulationCost */\n#include \"fast_log.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic BROTLI_INLINE BROTLI_BOOL HistogramPairIsLess(\n const HistogramPair* p1, const HistogramPair* p2) {\n if (p1->cost_diff != p2->cost_diff) {\n return TO_BROTLI_BOOL(p1->cost_diff > p2->cost_diff);\n }\n return TO_BROTLI_BOOL((p1->idx2 - p1->idx1) > (p2->idx2 - p2->idx1));\n}\n\n/* Returns entropy reduction of the context map when we combine two clusters. */\nstatic BROTLI_INLINE double ClusterCostDiff(size_t size_a, size_t size_b) {\n size_t size_c = size_a + size_b;\n return (double)size_a * FastLog2(size_a) +\n (double)size_b * FastLog2(size_b) -\n (double)size_c * FastLog2(size_c);\n}\n\n#define CODE(X) X\n\n#define FN(X) X ## Literal\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Command\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Distance\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#undef CODE\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/cluster.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions for clustering similar histograms together. */\n\n#ifndef BROTLI_ENC_CLUSTER_H_\n#define BROTLI_ENC_CLUSTER_H_\n\n#include \"../common/platform.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct HistogramPair {\n uint32_t idx1;\n uint32_t idx2;\n double cost_combo;\n double cost_diff;\n} HistogramPair;\n\n#define CODE(X) /* Declaration */;\n\n#define FN(X) X ## Literal\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Command\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Distance\n#include \"cluster_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#undef CODE\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_CLUSTER_H_ */\n" }, { "path": "c/enc/cluster_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, CODE */\n\n#define HistogramType FN(Histogram)\n\n/* Computes the bit cost reduction by combining out[idx1] and out[idx2] and if\n it is below a threshold, stores the pair (idx1, idx2) in the *pairs queue. */\nBROTLI_INTERNAL void FN(BrotliCompareAndPushToQueue)(\n const HistogramType* out, HistogramType* tmp, const uint32_t* cluster_size,\n uint32_t idx1, uint32_t idx2, size_t max_num_pairs, HistogramPair* pairs,\n size_t* num_pairs) CODE({\n BROTLI_BOOL is_good_pair = BROTLI_FALSE;\n HistogramPair p;\n p.idx1 = p.idx2 = 0;\n p.cost_diff = p.cost_combo = 0;\n if (idx1 == idx2) {\n return;\n }\n if (idx2 < idx1) {\n uint32_t t = idx2;\n idx2 = idx1;\n idx1 = t;\n }\n p.idx1 = idx1;\n p.idx2 = idx2;\n p.cost_diff = 0.5 * ClusterCostDiff(cluster_size[idx1], cluster_size[idx2]);\n p.cost_diff -= out[idx1].bit_cost_;\n p.cost_diff -= out[idx2].bit_cost_;\n\n if (out[idx1].total_count_ == 0) {\n p.cost_combo = out[idx2].bit_cost_;\n is_good_pair = BROTLI_TRUE;\n } else if (out[idx2].total_count_ == 0) {\n p.cost_combo = out[idx1].bit_cost_;\n is_good_pair = BROTLI_TRUE;\n } else {\n double threshold = *num_pairs == 0 ? 1e99 :\n BROTLI_MAX(double, 0.0, pairs[0].cost_diff);\n double cost_combo;\n *tmp = out[idx1];\n FN(HistogramAddHistogram)(tmp, &out[idx2]);\n cost_combo = FN(BrotliPopulationCost)(tmp);\n if (cost_combo < threshold - p.cost_diff) {\n p.cost_combo = cost_combo;\n is_good_pair = BROTLI_TRUE;\n }\n }\n if (is_good_pair) {\n p.cost_diff += p.cost_combo;\n if (*num_pairs > 0 && HistogramPairIsLess(&pairs[0], &p)) {\n /* Replace the top of the queue if needed. */\n if (*num_pairs < max_num_pairs) {\n pairs[*num_pairs] = pairs[0];\n ++(*num_pairs);\n }\n pairs[0] = p;\n } else if (*num_pairs < max_num_pairs) {\n pairs[*num_pairs] = p;\n ++(*num_pairs);\n }\n }\n})\n\nBROTLI_INTERNAL size_t FN(BrotliHistogramCombine)(HistogramType* out,\n HistogramType* tmp,\n uint32_t* cluster_size,\n uint32_t* symbols,\n uint32_t* clusters,\n HistogramPair* pairs,\n size_t num_clusters,\n size_t symbols_size,\n size_t max_clusters,\n size_t max_num_pairs) CODE({\n double cost_diff_threshold = 0.0;\n size_t min_cluster_size = 1;\n size_t num_pairs = 0;\n\n {\n /* We maintain a vector of histogram pairs, with the property that the pair\n with the maximum bit cost reduction is the first. */\n size_t idx1;\n for (idx1 = 0; idx1 < num_clusters; ++idx1) {\n size_t idx2;\n for (idx2 = idx1 + 1; idx2 < num_clusters; ++idx2) {\n FN(BrotliCompareAndPushToQueue)(out, tmp, cluster_size, clusters[idx1],\n clusters[idx2], max_num_pairs, &pairs[0], &num_pairs);\n }\n }\n }\n\n while (num_clusters > min_cluster_size) {\n uint32_t best_idx1;\n uint32_t best_idx2;\n size_t i;\n if (pairs[0].cost_diff >= cost_diff_threshold) {\n cost_diff_threshold = 1e99;\n min_cluster_size = max_clusters;\n continue;\n }\n /* Take the best pair from the top of heap. */\n best_idx1 = pairs[0].idx1;\n best_idx2 = pairs[0].idx2;\n FN(HistogramAddHistogram)(&out[best_idx1], &out[best_idx2]);\n out[best_idx1].bit_cost_ = pairs[0].cost_combo;\n cluster_size[best_idx1] += cluster_size[best_idx2];\n for (i = 0; i < symbols_size; ++i) {\n if (symbols[i] == best_idx2) {\n symbols[i] = best_idx1;\n }\n }\n for (i = 0; i < num_clusters; ++i) {\n if (clusters[i] == best_idx2) {\n memmove(&clusters[i], &clusters[i + 1],\n (num_clusters - i - 1) * sizeof(clusters[0]));\n break;\n }\n }\n --num_clusters;\n {\n /* Remove pairs intersecting the just combined best pair. */\n size_t copy_to_idx = 0;\n for (i = 0; i < num_pairs; ++i) {\n HistogramPair* p = &pairs[i];\n if (p->idx1 == best_idx1 || p->idx2 == best_idx1 ||\n p->idx1 == best_idx2 || p->idx2 == best_idx2) {\n /* Remove invalid pair from the queue. */\n continue;\n }\n if (HistogramPairIsLess(&pairs[0], p)) {\n /* Replace the top of the queue if needed. */\n HistogramPair front = pairs[0];\n pairs[0] = *p;\n pairs[copy_to_idx] = front;\n } else {\n pairs[copy_to_idx] = *p;\n }\n ++copy_to_idx;\n }\n num_pairs = copy_to_idx;\n }\n\n /* Push new pairs formed with the combined histogram to the heap. */\n for (i = 0; i < num_clusters; ++i) {\n FN(BrotliCompareAndPushToQueue)(out, tmp, cluster_size, best_idx1,\n clusters[i], max_num_pairs, &pairs[0], &num_pairs);\n }\n }\n return num_clusters;\n})\n\n/* What is the bit cost of moving histogram from cur_symbol to candidate. */\nBROTLI_INTERNAL double FN(BrotliHistogramBitCostDistance)(\n const HistogramType* histogram, const HistogramType* candidate,\n HistogramType* tmp) CODE({\n if (histogram->total_count_ == 0) {\n return 0.0;\n } else {\n *tmp = *histogram;\n FN(HistogramAddHistogram)(tmp, candidate);\n return FN(BrotliPopulationCost)(tmp) - candidate->bit_cost_;\n }\n})\n\n/* Find the best 'out' histogram for each of the 'in' histograms.\n When called, clusters[0..num_clusters) contains the unique values from\n symbols[0..in_size), but this property is not preserved in this function.\n Note: we assume that out[]->bit_cost_ is already up-to-date. */\nBROTLI_INTERNAL void FN(BrotliHistogramRemap)(const HistogramType* in,\n size_t in_size, const uint32_t* clusters, size_t num_clusters,\n HistogramType* out, HistogramType* tmp, uint32_t* symbols) CODE({\n size_t i;\n for (i = 0; i < in_size; ++i) {\n uint32_t best_out = i == 0 ? symbols[0] : symbols[i - 1];\n double best_bits =\n FN(BrotliHistogramBitCostDistance)(&in[i], &out[best_out], tmp);\n size_t j;\n for (j = 0; j < num_clusters; ++j) {\n const double cur_bits =\n FN(BrotliHistogramBitCostDistance)(&in[i], &out[clusters[j]], tmp);\n if (cur_bits < best_bits) {\n best_bits = cur_bits;\n best_out = clusters[j];\n }\n }\n symbols[i] = best_out;\n }\n\n /* Recompute each out based on raw and symbols. */\n for (i = 0; i < num_clusters; ++i) {\n FN(HistogramClear)(&out[clusters[i]]);\n }\n for (i = 0; i < in_size; ++i) {\n FN(HistogramAddHistogram)(&out[symbols[i]], &in[i]);\n }\n})\n\n/* Reorders elements of the out[0..length) array and changes values in\n symbols[0..length) array in the following way:\n * when called, symbols[] contains indexes into out[], and has N unique\n values (possibly N < length)\n * on return, symbols'[i] = f(symbols[i]) and\n out'[symbols'[i]] = out[symbols[i]], for each 0 <= i < length,\n where f is a bijection between the range of symbols[] and [0..N), and\n the first occurrences of values in symbols'[i] come in consecutive\n increasing order.\n Returns N, the number of unique values in symbols[]. */\nBROTLI_INTERNAL size_t FN(BrotliHistogramReindex)(MemoryManager* m,\n HistogramType* out, uint32_t* symbols, size_t length) CODE({\n static const uint32_t kInvalidIndex = BROTLI_UINT32_MAX;\n uint32_t* new_index = BROTLI_ALLOC(m, uint32_t, length);\n uint32_t next_index;\n HistogramType* tmp;\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(new_index)) return 0;\n for (i = 0; i < length; ++i) {\n new_index[i] = kInvalidIndex;\n }\n next_index = 0;\n for (i = 0; i < length; ++i) {\n if (new_index[symbols[i]] == kInvalidIndex) {\n new_index[symbols[i]] = next_index;\n ++next_index;\n }\n }\n /* TODO(eustas): by using idea of \"cycle-sort\" we can avoid allocation of\n tmp and reduce the number of copying by the factor of 2. */\n tmp = BROTLI_ALLOC(m, HistogramType, next_index);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(tmp)) return 0;\n next_index = 0;\n for (i = 0; i < length; ++i) {\n if (new_index[symbols[i]] == next_index) {\n tmp[next_index] = out[symbols[i]];\n ++next_index;\n }\n symbols[i] = new_index[symbols[i]];\n }\n BROTLI_FREE(m, new_index);\n for (i = 0; i < next_index; ++i) {\n out[i] = tmp[i];\n }\n BROTLI_FREE(m, tmp);\n return next_index;\n})\n\nBROTLI_INTERNAL void FN(BrotliClusterHistograms)(\n MemoryManager* m, const HistogramType* in, const size_t in_size,\n size_t max_histograms, HistogramType* out, size_t* out_size,\n uint32_t* histogram_symbols) CODE({\n uint32_t* cluster_size = BROTLI_ALLOC(m, uint32_t, in_size);\n uint32_t* clusters = BROTLI_ALLOC(m, uint32_t, in_size);\n size_t num_clusters = 0;\n const size_t max_input_histograms = 64;\n size_t pairs_capacity = max_input_histograms * max_input_histograms / 2;\n /* For the first pass of clustering, we allow all pairs. */\n HistogramPair* pairs = BROTLI_ALLOC(m, HistogramPair, pairs_capacity + 1);\n /* TODO(eustas): move to \"persistent\" arena? */\n HistogramType* tmp = BROTLI_ALLOC(m, HistogramType, 1);\n size_t i;\n\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(cluster_size) ||\n BROTLI_IS_NULL(clusters) || BROTLI_IS_NULL(pairs)|| BROTLI_IS_NULL(tmp)) {\n return;\n }\n\n for (i = 0; i < in_size; ++i) {\n cluster_size[i] = 1;\n }\n\n for (i = 0; i < in_size; ++i) {\n out[i] = in[i];\n out[i].bit_cost_ = FN(BrotliPopulationCost)(&in[i]);\n histogram_symbols[i] = (uint32_t)i;\n }\n\n for (i = 0; i < in_size; i += max_input_histograms) {\n size_t num_to_combine =\n BROTLI_MIN(size_t, in_size - i, max_input_histograms);\n size_t num_new_clusters;\n size_t j;\n for (j = 0; j < num_to_combine; ++j) {\n clusters[num_clusters + j] = (uint32_t)(i + j);\n }\n num_new_clusters =\n FN(BrotliHistogramCombine)(out, tmp, cluster_size,\n &histogram_symbols[i],\n &clusters[num_clusters], pairs,\n num_to_combine, num_to_combine,\n max_histograms, pairs_capacity);\n num_clusters += num_new_clusters;\n }\n\n {\n /* For the second pass, we limit the total number of histogram pairs.\n After this limit is reached, we only keep searching for the best pair. */\n size_t max_num_pairs = BROTLI_MIN(size_t,\n 64 * num_clusters, (num_clusters / 2) * num_clusters);\n BROTLI_ENSURE_CAPACITY(\n m, HistogramPair, pairs, pairs_capacity, max_num_pairs + 1);\n if (BROTLI_IS_OOM(m)) return;\n\n /* Collapse similar histograms. */\n num_clusters = FN(BrotliHistogramCombine)(out, tmp, cluster_size,\n histogram_symbols, clusters,\n pairs, num_clusters, in_size,\n max_histograms, max_num_pairs);\n }\n BROTLI_FREE(m, pairs);\n BROTLI_FREE(m, cluster_size);\n /* Find the optimal map from original histograms to the final ones. */\n FN(BrotliHistogramRemap)(in, in_size, clusters, num_clusters,\n out, tmp, histogram_symbols);\n BROTLI_FREE(m, tmp);\n BROTLI_FREE(m, clusters);\n /* Convert the context map to a canonical form. */\n *out_size = FN(BrotliHistogramReindex)(m, out, histogram_symbols, in_size);\n if (BROTLI_IS_OOM(m)) return;\n})\n\n#undef HistogramType\n" }, { "path": "c/enc/command.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"command.h\"\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nconst uint32_t kBrotliInsBase[BROTLI_NUM_INS_COPY_CODES] = {\n 0, 1, 2, 3, 4, 5, 6, 8, 10, 14, 18, 26,\n 34, 50, 66, 98, 130, 194, 322, 578, 1090, 2114, 6210, 22594};\nconst uint32_t kBrotliInsExtra[BROTLI_NUM_INS_COPY_CODES] = {\n 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 8, 9, 10, 12, 14, 24};\nconst uint32_t kBrotliCopyBase[BROTLI_NUM_INS_COPY_CODES] = {\n 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 18,\n 22, 30, 38, 54, 70, 102, 134, 198, 326, 582, 1094, 2118};\nconst uint32_t kBrotliCopyExtra[BROTLI_NUM_INS_COPY_CODES] = {\n 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 8, 9, 10, 24};\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/command.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* This class models a sequence of literals and a backward reference copy. */\n\n#ifndef BROTLI_ENC_COMMAND_H_\n#define BROTLI_ENC_COMMAND_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"fast_log.h\"\n#include \"params.h\"\n#include \"prefix.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\nuint32_t kBrotliInsBase[BROTLI_NUM_INS_COPY_CODES];\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\nuint32_t kBrotliInsExtra[BROTLI_NUM_INS_COPY_CODES];\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\nuint32_t kBrotliCopyBase[BROTLI_NUM_INS_COPY_CODES];\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\nuint32_t kBrotliCopyExtra[BROTLI_NUM_INS_COPY_CODES];\n\nstatic BROTLI_INLINE uint16_t GetInsertLengthCode(size_t insertlen) {\n if (insertlen < 6) {\n return (uint16_t)insertlen;\n } else if (insertlen < 130) {\n uint32_t nbits = Log2FloorNonZero(insertlen - 2) - 1u;\n return (uint16_t)((nbits << 1) + ((insertlen - 2) >> nbits) + 2);\n } else if (insertlen < 2114) {\n return (uint16_t)(Log2FloorNonZero(insertlen - 66) + 10);\n } else if (insertlen < 6210) {\n return 21u;\n } else if (insertlen < 22594) {\n return 22u;\n } else {\n return 23u;\n }\n}\n\nstatic BROTLI_INLINE uint16_t GetCopyLengthCode(size_t copylen) {\n if (copylen < 10) {\n return (uint16_t)(copylen - 2);\n } else if (copylen < 134) {\n uint32_t nbits = Log2FloorNonZero(copylen - 6) - 1u;\n return (uint16_t)((nbits << 1) + ((copylen - 6) >> nbits) + 4);\n } else if (copylen < 2118) {\n return (uint16_t)(Log2FloorNonZero(copylen - 70) + 12);\n } else {\n return 23u;\n }\n}\n\nstatic BROTLI_INLINE uint16_t CombineLengthCodes(\n uint16_t inscode, uint16_t copycode, BROTLI_BOOL use_last_distance) {\n uint16_t bits64 =\n (uint16_t)((copycode & 0x7u) | ((inscode & 0x7u) << 3u));\n if (use_last_distance && inscode < 8u && copycode < 16u) {\n return (copycode < 8u) ? bits64 : (bits64 | 64u);\n } else {\n /* Specification: 5 Encoding of ... (last table) */\n /* offset = 2 * index, where index is in range [0..8] */\n uint32_t offset = 2u * ((copycode >> 3u) + 3u * (inscode >> 3u));\n /* All values in specification are K * 64,\n where K = [2, 3, 6, 4, 5, 8, 7, 9, 10],\n i + 1 = [1, 2, 3, 4, 5, 6, 7, 8, 9],\n K - i - 1 = [1, 1, 3, 0, 0, 2, 0, 1, 2] = D.\n All values in D require only 2 bits to encode.\n Magic constant is shifted 6 bits left, to avoid final multiplication. */\n offset = (offset << 5u) + 0x40u + ((0x520D40u >> offset) & 0xC0u);\n return (uint16_t)(offset | bits64);\n }\n}\n\nstatic BROTLI_INLINE void GetLengthCode(size_t insertlen, size_t copylen,\n BROTLI_BOOL use_last_distance,\n uint16_t* code) {\n uint16_t inscode = GetInsertLengthCode(insertlen);\n uint16_t copycode = GetCopyLengthCode(copylen);\n *code = CombineLengthCodes(inscode, copycode, use_last_distance);\n}\n\nstatic BROTLI_INLINE uint32_t GetInsertBase(uint16_t inscode) {\n return kBrotliInsBase[inscode];\n}\n\nstatic BROTLI_INLINE uint32_t GetInsertExtra(uint16_t inscode) {\n return kBrotliInsExtra[inscode];\n}\n\nstatic BROTLI_INLINE uint32_t GetCopyBase(uint16_t copycode) {\n return kBrotliCopyBase[copycode];\n}\n\nstatic BROTLI_INLINE uint32_t GetCopyExtra(uint16_t copycode) {\n return kBrotliCopyExtra[copycode];\n}\n\ntypedef struct Command {\n uint32_t insert_len_;\n /* Stores copy_len in low 25 bits and copy_code - copy_len in high 7 bit. */\n uint32_t copy_len_;\n /* Stores distance extra bits. */\n uint32_t dist_extra_;\n uint16_t cmd_prefix_;\n /* Stores distance code in low 10 bits\n and number of extra bits in high 6 bits. */\n uint16_t dist_prefix_;\n} Command;\n\n/* distance_code is e.g. 0 for same-as-last short code, or 16 for offset 1. */\nstatic BROTLI_INLINE void InitCommand(Command* self,\n const BrotliDistanceParams* dist, size_t insertlen,\n size_t copylen, int copylen_code_delta, size_t distance_code) {\n /* Don't rely on signed int representation, use honest casts. */\n uint32_t delta = (uint8_t)((int8_t)copylen_code_delta);\n self->insert_len_ = (uint32_t)insertlen;\n self->copy_len_ = (uint32_t)(copylen | (delta << 25));\n /* The distance prefix and extra bits are stored in this Command as if\n npostfix and ndirect were 0, they are only recomputed later after the\n clustering if needed. */\n PrefixEncodeCopyDistance(\n distance_code, dist->num_direct_distance_codes,\n dist->distance_postfix_bits, &self->dist_prefix_, &self->dist_extra_);\n GetLengthCode(\n insertlen, (size_t)((int)copylen + copylen_code_delta),\n TO_BROTLI_BOOL((self->dist_prefix_ & 0x3FF) == 0), &self->cmd_prefix_);\n}\n\nstatic BROTLI_INLINE void InitInsertCommand(Command* self, size_t insertlen) {\n self->insert_len_ = (uint32_t)insertlen;\n self->copy_len_ = 4 << 25;\n self->dist_extra_ = 0;\n self->dist_prefix_ = BROTLI_NUM_DISTANCE_SHORT_CODES;\n GetLengthCode(insertlen, 4, BROTLI_FALSE, &self->cmd_prefix_);\n}\n\nstatic BROTLI_INLINE uint32_t CommandRestoreDistanceCode(\n const Command* self, const BrotliDistanceParams* dist) {\n if ((self->dist_prefix_ & 0x3FFu) <\n BROTLI_NUM_DISTANCE_SHORT_CODES + dist->num_direct_distance_codes) {\n return self->dist_prefix_ & 0x3FFu;\n } else {\n uint32_t dcode = self->dist_prefix_ & 0x3FFu;\n uint32_t nbits = self->dist_prefix_ >> 10;\n uint32_t extra = self->dist_extra_;\n uint32_t postfix_mask = (1U << dist->distance_postfix_bits) - 1U;\n uint32_t hcode = (dcode - dist->num_direct_distance_codes -\n BROTLI_NUM_DISTANCE_SHORT_CODES) >>\n dist->distance_postfix_bits;\n uint32_t lcode = (dcode - dist->num_direct_distance_codes -\n BROTLI_NUM_DISTANCE_SHORT_CODES) & postfix_mask;\n uint32_t offset = ((2U + (hcode & 1U)) << nbits) - 4U;\n return ((offset + extra) << dist->distance_postfix_bits) + lcode +\n dist->num_direct_distance_codes + BROTLI_NUM_DISTANCE_SHORT_CODES;\n }\n}\n\nstatic BROTLI_INLINE uint32_t CommandDistanceContext(const Command* self) {\n uint32_t r = self->cmd_prefix_ >> 6;\n uint32_t c = self->cmd_prefix_ & 7;\n if ((r == 0 || r == 2 || r == 4 || r == 7) && (c <= 2)) {\n return c;\n }\n return 3;\n}\n\nstatic BROTLI_INLINE uint32_t CommandCopyLen(const Command* self) {\n return self->copy_len_ & 0x1FFFFFF;\n}\n\nstatic BROTLI_INLINE uint32_t CommandCopyLenCode(const Command* self) {\n uint32_t modifier = self->copy_len_ >> 25;\n int32_t delta = (int8_t)((uint8_t)(modifier | ((modifier & 0x40) << 1)));\n return (uint32_t)((int32_t)(self->copy_len_ & 0x1FFFFFF) + delta);\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_COMMAND_H_ */\n" }, { "path": "c/enc/compound_dictionary.c", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"compound_dictionary.h\"\n\n#include \"../common/platform.h\"\n#include \n#include \"memory.h\"\n\nstatic PreparedDictionary* CreatePreparedDictionaryWithParams(MemoryManager* m,\n const uint8_t* source, size_t source_size, uint32_t bucket_bits,\n uint32_t slot_bits, uint32_t hash_bits, uint16_t bucket_limit) {\n /* Step 1: create \"bloated\" hasher. */\n uint32_t num_slots = 1u << slot_bits;\n uint32_t num_buckets = 1u << bucket_bits;\n uint32_t hash_shift = 64u - bucket_bits;\n uint64_t hash_mask = (~((uint64_t)0U)) >> (64 - hash_bits);\n uint32_t slot_mask = num_slots - 1;\n size_t alloc_size = (sizeof(uint32_t) << slot_bits) +\n (sizeof(uint32_t) << slot_bits) +\n (sizeof(uint16_t) << bucket_bits) +\n (sizeof(uint32_t) << bucket_bits) +\n (sizeof(uint32_t) * source_size);\n uint8_t* flat = NULL;\n PreparedDictionary* result = NULL;\n uint16_t* num = NULL;\n uint32_t* bucket_heads = NULL;\n uint32_t* next_bucket = NULL;\n uint32_t* slot_offsets = NULL;\n uint16_t* heads = NULL;\n uint32_t* items = NULL;\n uint8_t** source_ref = NULL;\n uint32_t i;\n uint32_t* slot_size = NULL;\n uint32_t* slot_limit = NULL;\n uint32_t total_items = 0;\n if (slot_bits > 16) return NULL;\n if (slot_bits > bucket_bits) return NULL;\n if (bucket_bits - slot_bits >= 16) return NULL;\n\n flat = BROTLI_ALLOC(m, uint8_t, alloc_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(flat)) return NULL;\n\n slot_size = (uint32_t*)flat;\n slot_limit = (uint32_t*)(&slot_size[num_slots]);\n num = (uint16_t*)(&slot_limit[num_slots]);\n bucket_heads = (uint32_t*)(&num[num_buckets]);\n next_bucket = (uint32_t*)(&bucket_heads[num_buckets]);\n memset(num, 0, num_buckets * sizeof(num[0]));\n\n /* TODO(eustas): apply custom \"store\" order. */\n for (i = 0; i + 7 < source_size; ++i) {\n const uint64_t h = (BROTLI_UNALIGNED_LOAD64LE(&source[i]) & hash_mask) *\n kPreparedDictionaryHashMul64Long;\n const uint32_t key = (uint32_t)(h >> hash_shift);\n uint16_t count = num[key];\n next_bucket[i] = (count == 0) ? ((uint32_t)(-1)) : bucket_heads[key];\n bucket_heads[key] = i;\n count++;\n if (count > bucket_limit) count = bucket_limit;\n num[key] = count;\n }\n\n /* Step 2: find slot limits. */\n for (i = 0; i < num_slots; ++i) {\n BROTLI_BOOL overflow = BROTLI_FALSE;\n slot_limit[i] = bucket_limit;\n while (BROTLI_TRUE) {\n uint32_t limit = slot_limit[i];\n size_t j;\n uint32_t count = 0;\n overflow = BROTLI_FALSE;\n for (j = i; j < num_buckets; j += num_slots) {\n uint32_t size = num[j];\n /* Last chain may span behind 64K limit; overflow happens only if\n we are about to use 0xFFFF+ as item offset. */\n if (count >= 0xFFFF) {\n overflow = BROTLI_TRUE;\n break;\n }\n if (size > limit) size = limit;\n count += size;\n }\n if (!overflow) {\n slot_size[i] = count;\n total_items += count;\n break;\n }\n slot_limit[i]--;\n }\n }\n\n /* Step 3: transfer data to \"slim\" hasher. */\n alloc_size = sizeof(PreparedDictionary) + (sizeof(uint32_t) << slot_bits) +\n (sizeof(uint16_t) << bucket_bits) + (sizeof(uint32_t) * total_items) +\n sizeof(uint8_t*);\n\n result = (PreparedDictionary*)BROTLI_ALLOC(m, uint8_t, alloc_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(result)) {\n BROTLI_FREE(m, flat);\n return NULL;\n }\n slot_offsets = (uint32_t*)(&result[1]);\n heads = (uint16_t*)(&slot_offsets[num_slots]);\n items = (uint32_t*)(&heads[num_buckets]);\n source_ref = (uint8_t**)(&items[total_items]);\n\n result->magic = kLeanPreparedDictionaryMagic;\n result->num_items = total_items;\n result->source_size = (uint32_t)source_size;\n result->hash_bits = hash_bits;\n result->bucket_bits = bucket_bits;\n result->slot_bits = slot_bits;\n BROTLI_UNALIGNED_STORE_PTR(source_ref, source);\n\n total_items = 0;\n for (i = 0; i < num_slots; ++i) {\n slot_offsets[i] = total_items;\n total_items += slot_size[i];\n slot_size[i] = 0;\n }\n for (i = 0; i < num_buckets; ++i) {\n uint32_t slot = i & slot_mask;\n uint32_t count = num[i];\n uint32_t pos;\n size_t j;\n size_t cursor = slot_size[slot];\n if (count > slot_limit[slot]) count = slot_limit[slot];\n if (count == 0) {\n heads[i] = 0xFFFF;\n continue;\n }\n heads[i] = (uint16_t)cursor;\n cursor += slot_offsets[slot];\n slot_size[slot] += count;\n pos = bucket_heads[i];\n for (j = 0; j < count; j++) {\n items[cursor++] = pos;\n pos = next_bucket[pos];\n }\n items[cursor - 1] |= 0x80000000;\n }\n\n BROTLI_FREE(m, flat);\n return result;\n}\n\nPreparedDictionary* CreatePreparedDictionary(MemoryManager* m,\n const uint8_t* source, size_t source_size) {\n uint32_t bucket_bits = 17;\n uint32_t slot_bits = 7;\n uint32_t hash_bits = 40;\n uint16_t bucket_limit = 32;\n size_t volume = 16u << bucket_bits;\n /* Tune parameters to fit dictionary size. */\n while (volume < source_size && bucket_bits < 22) {\n bucket_bits++;\n slot_bits++;\n volume <<= 1;\n }\n return CreatePreparedDictionaryWithParams(m,\n source, source_size, bucket_bits, slot_bits, hash_bits, bucket_limit);\n}\n\nvoid DestroyPreparedDictionary(MemoryManager* m,\n PreparedDictionary* dictionary) {\n if (!dictionary) return;\n BROTLI_FREE(m, dictionary);\n}\n\nBROTLI_BOOL AttachPreparedDictionary(\n CompoundDictionary* compound, const PreparedDictionary* dictionary) {\n size_t length = 0;\n size_t index = 0;\n\n if (compound->num_chunks == SHARED_BROTLI_MAX_COMPOUND_DICTS) {\n return BROTLI_FALSE;\n }\n\n if (!dictionary) return BROTLI_FALSE;\n\n length = dictionary->source_size;\n index = compound->num_chunks;\n compound->total_size += length;\n compound->chunks[index] = dictionary;\n compound->chunk_offsets[index + 1] = compound->total_size;\n {\n uint32_t* slot_offsets = (uint32_t*)(&dictionary[1]);\n uint16_t* heads = (uint16_t*)(&slot_offsets[(size_t)1u << dictionary->slot_bits]);\n uint32_t* items = (uint32_t*)(&heads[(size_t)1u << dictionary->bucket_bits]);\n const void* tail = (void*)&items[dictionary->num_items];\n if (dictionary->magic == kPreparedDictionaryMagic) {\n compound->chunk_source[index] = (const uint8_t*)tail;\n } else {\n /* dictionary->magic == kLeanPreparedDictionaryMagic */\n compound->chunk_source[index] =\n (const uint8_t*)BROTLI_UNALIGNED_LOAD_PTR((const uint8_t**)tail);\n }\n }\n compound->num_chunks++;\n return BROTLI_TRUE;\n}\n" }, { "path": "c/enc/compound_dictionary.h", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#ifndef BROTLI_ENC_PREPARED_DICTIONARY_H_\n#define BROTLI_ENC_PREPARED_DICTIONARY_H_\n\n#include \"../common/platform.h\"\n#include \n#include \"memory.h\"\n\n/* \"Fat\" prepared dictionary, could be cooked outside of C implementation,\n * e.g. on Java side. LZ77 data is copied inside PreparedDictionary struct. */\nstatic const uint32_t kPreparedDictionaryMagic = 0xDEBCEDE0;\n\nstatic const uint32_t kSharedDictionaryMagic = 0xDEBCEDE1;\n\nstatic const uint32_t kManagedDictionaryMagic = 0xDEBCEDE2;\n\n/* \"Lean\" prepared dictionary. LZ77 data is referenced. It is the responsibility\n * of caller of \"prepare dictionary\" to keep the LZ77 data while prepared\n * dictionary is in use. */\nstatic const uint32_t kLeanPreparedDictionaryMagic = 0xDEBCEDE3;\n\nstatic const uint64_t kPreparedDictionaryHashMul64Long =\n BROTLI_MAKE_UINT64_T(0x1FE35A7Bu, 0xD3579BD3u);\n\ntypedef struct PreparedDictionary {\n uint32_t magic;\n uint32_t num_items;\n uint32_t source_size;\n uint32_t hash_bits;\n uint32_t bucket_bits;\n uint32_t slot_bits;\n\n /* --- Dynamic size members --- */\n\n /* uint32_t slot_offsets[1 << slot_bits]; */\n /* uint16_t heads[1 << bucket_bits]; */\n /* uint32_t items[variable]; */\n\n /* [maybe] uint8_t* source_ref, depending on magic. */\n /* [maybe] uint8_t source[source_size], depending on magic. */\n} PreparedDictionary;\n\nBROTLI_INTERNAL PreparedDictionary* CreatePreparedDictionary(MemoryManager* m,\n const uint8_t* source, size_t source_size);\n\nBROTLI_INTERNAL void DestroyPreparedDictionary(MemoryManager* m,\n PreparedDictionary* dictionary);\n\ntypedef struct CompoundDictionary {\n /* LZ77 prefix, compound dictionary */\n size_t num_chunks;\n size_t total_size;\n /* Client instances. */\n const PreparedDictionary* chunks[SHARED_BROTLI_MAX_COMPOUND_DICTS + 1];\n const uint8_t* chunk_source[SHARED_BROTLI_MAX_COMPOUND_DICTS + 1];\n size_t chunk_offsets[SHARED_BROTLI_MAX_COMPOUND_DICTS + 1];\n\n size_t num_prepared_instances_;\n /* Owned instances. */\n PreparedDictionary* prepared_instances_[SHARED_BROTLI_MAX_COMPOUND_DICTS + 1];\n} CompoundDictionary;\n\nBROTLI_INTERNAL BROTLI_BOOL AttachPreparedDictionary(\n CompoundDictionary* compound, const PreparedDictionary* dictionary);\n\n#endif /* BROTLI_ENC_PREPARED_DICTIONARY */\n" }, { "path": "c/enc/compress_fragment.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function for fast encoding of an input fragment, independently from the input\n history. This function uses one-pass processing: when we find a backward\n match, we immediately emit the corresponding command and literal codes to\n the bit stream.\n\n Adapted from the CompressFragment() function in\n https://github.com/google/snappy/blob/master/snappy.cc */\n\n#include \"compress_fragment.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"brotli_bit_stream.h\"\n#include \"entropy_encode.h\"\n#include \"fast_log.h\"\n#include \"find_match_length.h\"\n#include \"hash_base.h\"\n#include \"write_bits.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define MAX_DISTANCE (long)BROTLI_MAX_BACKWARD_LIMIT(18)\n\nstatic BROTLI_INLINE uint32_t Hash(const uint8_t* p, size_t shift) {\n const uint64_t h = (BROTLI_UNALIGNED_LOAD64LE(p) << 24) * kHashMul32;\n return (uint32_t)(h >> shift);\n}\n\nstatic BROTLI_INLINE uint32_t HashBytesAtOffset(\n uint64_t v, int offset, size_t shift) {\n BROTLI_DCHECK(offset >= 0);\n BROTLI_DCHECK(offset <= 3);\n {\n const uint64_t h = ((v >> (8 * offset)) << 24) * kHashMul32;\n return (uint32_t)(h >> shift);\n }\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL IsMatch(const uint8_t* p1, const uint8_t* p2) {\n return TO_BROTLI_BOOL(\n BrotliUnalignedRead32(p1) == BrotliUnalignedRead32(p2) &&\n p1[4] == p2[4]);\n}\n\n/* Builds a literal prefix code into \"depths\" and \"bits\" based on the statistics\n of the \"input\" string and stores it into the bit stream.\n Note that the prefix code here is built from the pre-LZ77 input, therefore\n we can only approximate the statistics of the actual literal stream.\n Moreover, for long inputs we build a histogram from a sample of the input\n and thus have to assign a non-zero depth for each literal.\n Returns estimated compression ratio millibytes/char for encoding given input\n with generated code. */\nstatic size_t BuildAndStoreLiteralPrefixCode(BrotliOnePassArena* s,\n const uint8_t* input,\n const size_t input_size,\n uint8_t depths[256],\n uint16_t bits[256],\n size_t* storage_ix,\n uint8_t* storage) {\n uint32_t* BROTLI_RESTRICT const histogram = s->histogram;\n size_t histogram_total;\n size_t i;\n memset(histogram, 0, sizeof(s->histogram));\n\n if (input_size < (1 << 15)) {\n for (i = 0; i < input_size; ++i) {\n ++histogram[input[i]];\n }\n histogram_total = input_size;\n for (i = 0; i < 256; ++i) {\n /* We weigh the first 11 samples with weight 3 to account for the\n balancing effect of the LZ77 phase on the histogram. */\n const uint32_t adjust = 2 * BROTLI_MIN(uint32_t, histogram[i], 11u);\n histogram[i] += adjust;\n histogram_total += adjust;\n }\n } else {\n static const size_t kSampleRate = 29;\n for (i = 0; i < input_size; i += kSampleRate) {\n ++histogram[input[i]];\n }\n histogram_total = (input_size + kSampleRate - 1) / kSampleRate;\n for (i = 0; i < 256; ++i) {\n /* We add 1 to each population count to avoid 0 bit depths (since this is\n only a sample and we don't know if the symbol appears or not), and we\n weigh the first 11 samples with weight 3 to account for the balancing\n effect of the LZ77 phase on the histogram (more frequent symbols are\n more likely to be in backward references instead as literals). */\n const uint32_t adjust = 1 + 2 * BROTLI_MIN(uint32_t, histogram[i], 11u);\n histogram[i] += adjust;\n histogram_total += adjust;\n }\n }\n BrotliBuildAndStoreHuffmanTreeFast(s->tree, histogram, histogram_total,\n /* max_bits = */ 8,\n depths, bits, storage_ix, storage);\n {\n size_t literal_ratio = 0;\n for (i = 0; i < 256; ++i) {\n if (histogram[i]) literal_ratio += histogram[i] * depths[i];\n }\n /* Estimated encoding ratio, millibytes per symbol. */\n return (literal_ratio * 125) / histogram_total;\n }\n}\n\n/* Builds a command and distance prefix code (each 64 symbols) into \"depth\" and\n \"bits\" based on \"histogram\" and stores it into the bit stream. */\nstatic void BuildAndStoreCommandPrefixCode(BrotliOnePassArena* s,\n size_t* storage_ix, uint8_t* storage) {\n const uint32_t* const histogram = s->cmd_histo;\n uint8_t* const depth = s->cmd_depth;\n uint16_t* const bits = s->cmd_bits;\n uint8_t* BROTLI_RESTRICT const tmp_depth = s->tmp_depth;\n uint16_t* BROTLI_RESTRICT const tmp_bits = s->tmp_bits;\n /* TODO(eustas): do only once on initialization. */\n memset(tmp_depth, 0, BROTLI_NUM_COMMAND_SYMBOLS);\n\n BrotliCreateHuffmanTree(histogram, 64, 15, s->tree, depth);\n BrotliCreateHuffmanTree(&histogram[64], 64, 14, s->tree, &depth[64]);\n /* We have to jump through a few hoops here in order to compute\n the command bits because the symbols are in a different order than in\n the full alphabet. This looks complicated, but having the symbols\n in this order in the command bits saves a few branches in the Emit*\n functions. */\n memcpy(tmp_depth, depth, 24);\n memcpy(tmp_depth + 24, depth + 40, 8);\n memcpy(tmp_depth + 32, depth + 24, 8);\n memcpy(tmp_depth + 40, depth + 48, 8);\n memcpy(tmp_depth + 48, depth + 32, 8);\n memcpy(tmp_depth + 56, depth + 56, 8);\n BrotliConvertBitDepthsToSymbols(tmp_depth, 64, tmp_bits);\n memcpy(bits, tmp_bits, 48);\n memcpy(bits + 24, tmp_bits + 32, 16);\n memcpy(bits + 32, tmp_bits + 48, 16);\n memcpy(bits + 40, tmp_bits + 24, 16);\n memcpy(bits + 48, tmp_bits + 40, 16);\n memcpy(bits + 56, tmp_bits + 56, 16);\n BrotliConvertBitDepthsToSymbols(&depth[64], 64, &bits[64]);\n {\n /* Create the bit length array for the full command alphabet. */\n size_t i;\n memset(tmp_depth, 0, 64); /* only 64 first values were used */\n memcpy(tmp_depth, depth, 8);\n memcpy(tmp_depth + 64, depth + 8, 8);\n memcpy(tmp_depth + 128, depth + 16, 8);\n memcpy(tmp_depth + 192, depth + 24, 8);\n memcpy(tmp_depth + 384, depth + 32, 8);\n for (i = 0; i < 8; ++i) {\n tmp_depth[128 + 8 * i] = depth[40 + i];\n tmp_depth[256 + 8 * i] = depth[48 + i];\n tmp_depth[448 + 8 * i] = depth[56 + i];\n }\n /* TODO(eustas): could/should full-length machinery be avoided? */\n BrotliStoreHuffmanTree(\n tmp_depth, BROTLI_NUM_COMMAND_SYMBOLS, s->tree, storage_ix, storage);\n }\n BrotliStoreHuffmanTree(&depth[64], 64, s->tree, storage_ix, storage);\n}\n\n/* REQUIRES: insertlen < 6210 */\nstatic BROTLI_INLINE void EmitInsertLen(size_t insertlen,\n const uint8_t depth[128],\n const uint16_t bits[128],\n uint32_t histo[128],\n size_t* storage_ix,\n uint8_t* storage) {\n if (insertlen < 6) {\n const size_t code = insertlen + 40;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n ++histo[code];\n } else if (insertlen < 130) {\n const size_t tail = insertlen - 2;\n const uint32_t nbits = Log2FloorNonZero(tail) - 1u;\n const size_t prefix = tail >> nbits;\n const size_t inscode = (nbits << 1) + prefix + 42;\n BrotliWriteBits(depth[inscode], bits[inscode], storage_ix, storage);\n BrotliWriteBits(nbits, tail - (prefix << nbits), storage_ix, storage);\n ++histo[inscode];\n } else if (insertlen < 2114) {\n const size_t tail = insertlen - 66;\n const uint32_t nbits = Log2FloorNonZero(tail);\n const size_t code = nbits + 50;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(nbits, tail - ((size_t)1 << nbits), storage_ix, storage);\n ++histo[code];\n } else {\n BrotliWriteBits(depth[61], bits[61], storage_ix, storage);\n BrotliWriteBits(12, insertlen - 2114, storage_ix, storage);\n ++histo[61];\n }\n}\n\nstatic BROTLI_INLINE void EmitLongInsertLen(size_t insertlen,\n const uint8_t depth[128],\n const uint16_t bits[128],\n uint32_t histo[128],\n size_t* storage_ix,\n uint8_t* storage) {\n if (insertlen < 22594) {\n BrotliWriteBits(depth[62], bits[62], storage_ix, storage);\n BrotliWriteBits(14, insertlen - 6210, storage_ix, storage);\n ++histo[62];\n } else {\n BrotliWriteBits(depth[63], bits[63], storage_ix, storage);\n BrotliWriteBits(24, insertlen - 22594, storage_ix, storage);\n ++histo[63];\n }\n}\n\nstatic BROTLI_INLINE void EmitCopyLen(size_t copylen,\n const uint8_t depth[128],\n const uint16_t bits[128],\n uint32_t histo[128],\n size_t* storage_ix,\n uint8_t* storage) {\n if (copylen < 10) {\n BrotliWriteBits(\n depth[copylen + 14], bits[copylen + 14], storage_ix, storage);\n ++histo[copylen + 14];\n } else if (copylen < 134) {\n const size_t tail = copylen - 6;\n const uint32_t nbits = Log2FloorNonZero(tail) - 1u;\n const size_t prefix = tail >> nbits;\n const size_t code = (nbits << 1) + prefix + 20;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(nbits, tail - (prefix << nbits), storage_ix, storage);\n ++histo[code];\n } else if (copylen < 2118) {\n const size_t tail = copylen - 70;\n const uint32_t nbits = Log2FloorNonZero(tail);\n const size_t code = nbits + 28;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(nbits, tail - ((size_t)1 << nbits), storage_ix, storage);\n ++histo[code];\n } else {\n BrotliWriteBits(depth[39], bits[39], storage_ix, storage);\n BrotliWriteBits(24, copylen - 2118, storage_ix, storage);\n ++histo[39];\n }\n}\n\nstatic BROTLI_INLINE void EmitCopyLenLastDistance(size_t copylen,\n const uint8_t depth[128],\n const uint16_t bits[128],\n uint32_t histo[128],\n size_t* storage_ix,\n uint8_t* storage) {\n if (copylen < 12) {\n BrotliWriteBits(depth[copylen - 4], bits[copylen - 4], storage_ix, storage);\n ++histo[copylen - 4];\n } else if (copylen < 72) {\n const size_t tail = copylen - 8;\n const uint32_t nbits = Log2FloorNonZero(tail) - 1;\n const size_t prefix = tail >> nbits;\n const size_t code = (nbits << 1) + prefix + 4;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(nbits, tail - (prefix << nbits), storage_ix, storage);\n ++histo[code];\n } else if (copylen < 136) {\n const size_t tail = copylen - 8;\n const size_t code = (tail >> 5) + 30;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(5, tail & 31, storage_ix, storage);\n BrotliWriteBits(depth[64], bits[64], storage_ix, storage);\n ++histo[code];\n ++histo[64];\n } else if (copylen < 2120) {\n const size_t tail = copylen - 72;\n const uint32_t nbits = Log2FloorNonZero(tail);\n const size_t code = nbits + 28;\n BrotliWriteBits(depth[code], bits[code], storage_ix, storage);\n BrotliWriteBits(nbits, tail - ((size_t)1 << nbits), storage_ix, storage);\n BrotliWriteBits(depth[64], bits[64], storage_ix, storage);\n ++histo[code];\n ++histo[64];\n } else {\n BrotliWriteBits(depth[39], bits[39], storage_ix, storage);\n BrotliWriteBits(24, copylen - 2120, storage_ix, storage);\n BrotliWriteBits(depth[64], bits[64], storage_ix, storage);\n ++histo[39];\n ++histo[64];\n }\n}\n\nstatic BROTLI_INLINE void EmitDistance(size_t distance,\n const uint8_t depth[128],\n const uint16_t bits[128],\n uint32_t histo[128],\n size_t* storage_ix, uint8_t* storage) {\n const size_t d = distance + 3;\n const uint32_t nbits = Log2FloorNonZero(d) - 1u;\n const size_t prefix = (d >> nbits) & 1;\n const size_t offset = (2 + prefix) << nbits;\n const size_t distcode = 2 * (nbits - 1) + prefix + 80;\n BrotliWriteBits(depth[distcode], bits[distcode], storage_ix, storage);\n BrotliWriteBits(nbits, d - offset, storage_ix, storage);\n ++histo[distcode];\n}\n\nstatic BROTLI_INLINE void EmitLiterals(const uint8_t* input, const size_t len,\n const uint8_t depth[256],\n const uint16_t bits[256],\n size_t* storage_ix, uint8_t* storage) {\n size_t j;\n for (j = 0; j < len; j++) {\n const uint8_t lit = input[j];\n BrotliWriteBits(depth[lit], bits[lit], storage_ix, storage);\n }\n}\n\n/* REQUIRES: len <= 1 << 24. */\nstatic void BrotliStoreMetaBlockHeader(\n size_t len, BROTLI_BOOL is_uncompressed, size_t* storage_ix,\n uint8_t* storage) {\n size_t nibbles = 6;\n /* ISLAST */\n BrotliWriteBits(1, 0, storage_ix, storage);\n if (len <= (1U << 16)) {\n nibbles = 4;\n } else if (len <= (1U << 20)) {\n nibbles = 5;\n }\n BrotliWriteBits(2, nibbles - 4, storage_ix, storage);\n BrotliWriteBits(nibbles * 4, len - 1, storage_ix, storage);\n /* ISUNCOMPRESSED */\n BrotliWriteBits(1, (uint64_t)is_uncompressed, storage_ix, storage);\n}\n\nstatic void UpdateBits(size_t n_bits, uint32_t bits, size_t pos,\n uint8_t* array) {\n while (n_bits > 0) {\n size_t byte_pos = pos >> 3;\n size_t n_unchanged_bits = pos & 7;\n size_t n_changed_bits = BROTLI_MIN(size_t, n_bits, 8 - n_unchanged_bits);\n size_t total_bits = n_unchanged_bits + n_changed_bits;\n uint32_t mask =\n (~((1u << total_bits) - 1u)) | ((1u << n_unchanged_bits) - 1u);\n uint32_t unchanged_bits = array[byte_pos] & mask;\n uint32_t changed_bits = bits & ((1u << n_changed_bits) - 1u);\n array[byte_pos] =\n (uint8_t)((changed_bits << n_unchanged_bits) | unchanged_bits);\n n_bits -= n_changed_bits;\n bits >>= n_changed_bits;\n pos += n_changed_bits;\n }\n}\n\nstatic void RewindBitPosition(const size_t new_storage_ix,\n size_t* storage_ix, uint8_t* storage) {\n const size_t bitpos = new_storage_ix & 7;\n const size_t mask = (1u << bitpos) - 1;\n storage[new_storage_ix >> 3] &= (uint8_t)mask;\n *storage_ix = new_storage_ix;\n}\n\nstatic BROTLI_BOOL ShouldMergeBlock(BrotliOnePassArena* s,\n const uint8_t* data, size_t len, const uint8_t* depths) {\n uint32_t* BROTLI_RESTRICT const histo = s->histogram;\n static const size_t kSampleRate = 43;\n size_t i;\n memset(histo, 0, sizeof(s->histogram));\n for (i = 0; i < len; i += kSampleRate) {\n ++histo[data[i]];\n }\n {\n const size_t total = (len + kSampleRate - 1) / kSampleRate;\n double r = (FastLog2(total) + 0.5) * (double)total + 200;\n for (i = 0; i < 256; ++i) {\n r -= (double)histo[i] * (depths[i] + FastLog2(histo[i]));\n }\n return TO_BROTLI_BOOL(r >= 0.0);\n }\n}\n\n/* Acceptable loss for uncompressible speedup is 2% */\n#define MIN_RATIO 980\n\nstatic BROTLI_INLINE BROTLI_BOOL ShouldUseUncompressedMode(\n const uint8_t* metablock_start, const uint8_t* next_emit,\n const size_t insertlen, const size_t literal_ratio) {\n const size_t compressed = (size_t)(next_emit - metablock_start);\n if (compressed * 50 > insertlen) {\n return BROTLI_FALSE;\n } else {\n return TO_BROTLI_BOOL(literal_ratio > MIN_RATIO);\n }\n}\n\nstatic void EmitUncompressedMetaBlock(const uint8_t* begin, const uint8_t* end,\n const size_t storage_ix_start,\n size_t* storage_ix, uint8_t* storage) {\n const size_t len = (size_t)(end - begin);\n RewindBitPosition(storage_ix_start, storage_ix, storage);\n BrotliStoreMetaBlockHeader(len, 1, storage_ix, storage);\n *storage_ix = (*storage_ix + 7u) & ~7u;\n memcpy(&storage[*storage_ix >> 3], begin, len);\n *storage_ix += len << 3;\n storage[*storage_ix >> 3] = 0;\n}\n\nstatic BROTLI_MODEL(\"small\") uint32_t kCmdHistoSeed[128] = {\n 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1,\n 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1,\n 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\n 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\n 1, 1, 1, 1, 0, 0, 0, 0,\n};\n\nstatic BROTLI_INLINE void BrotliCompressFragmentFastImpl(\n BrotliOnePassArena* s, const uint8_t* input, size_t input_size,\n BROTLI_BOOL is_last, int* table, size_t table_bits,\n size_t* storage_ix, uint8_t* storage) {\n uint8_t* BROTLI_RESTRICT const cmd_depth = s->cmd_depth;\n uint16_t* BROTLI_RESTRICT const cmd_bits = s->cmd_bits;\n uint32_t* BROTLI_RESTRICT const cmd_histo = s->cmd_histo;\n uint8_t* BROTLI_RESTRICT const lit_depth = s->lit_depth;\n uint16_t* BROTLI_RESTRICT const lit_bits = s->lit_bits;\n const uint8_t* ip_end;\n\n /* \"next_emit\" is a pointer to the first byte that is not covered by a\n previous copy. Bytes between \"next_emit\" and the start of the next copy or\n the end of the input will be emitted as literal bytes. */\n const uint8_t* next_emit = input;\n /* Save the start of the first block for position and distance computations.\n */\n const uint8_t* base_ip = input;\n\n static const size_t kFirstBlockSize = 3 << 15;\n static const size_t kMergeBlockSize = 1 << 16;\n\n const size_t kInputMarginBytes = BROTLI_WINDOW_GAP;\n const size_t kMinMatchLen = 5;\n\n const uint8_t* metablock_start = input;\n size_t block_size = BROTLI_MIN(size_t, input_size, kFirstBlockSize);\n size_t total_block_size = block_size;\n /* Save the bit position of the MLEN field of the meta-block header, so that\n we can update it later if we decide to extend this meta-block. */\n size_t mlen_storage_ix = *storage_ix + 3;\n\n size_t literal_ratio;\n\n const uint8_t* ip;\n int last_distance;\n\n const size_t shift = 64u - table_bits;\n\n BrotliStoreMetaBlockHeader(block_size, 0, storage_ix, storage);\n /* No block splits, no contexts. */\n BrotliWriteBits(13, 0, storage_ix, storage);\n\n literal_ratio = BuildAndStoreLiteralPrefixCode(\n s, input, block_size, s->lit_depth, s->lit_bits, storage_ix, storage);\n\n {\n /* Store the pre-compressed command and distance prefix codes. */\n size_t i;\n for (i = 0; i + 7 < s->cmd_code_numbits; i += 8) {\n BrotliWriteBits(8, s->cmd_code[i >> 3], storage_ix, storage);\n }\n }\n BrotliWriteBits(s->cmd_code_numbits & 7,\n s->cmd_code[s->cmd_code_numbits >> 3], storage_ix, storage);\n\n emit_commands:\n /* Initialize the command and distance histograms. We will gather\n statistics of command and distance codes during the processing\n of this block and use it to update the command and distance\n prefix codes for the next block. */\n memcpy(s->cmd_histo, kCmdHistoSeed, sizeof(kCmdHistoSeed));\n\n /* \"ip\" is the input pointer. */\n ip = input;\n last_distance = -1;\n ip_end = input + block_size;\n\n if (BROTLI_PREDICT_TRUE(block_size >= kInputMarginBytes)) {\n /* For the last block, we need to keep a 16 bytes margin so that we can be\n sure that all distances are at most window size - 16.\n For all other blocks, we only need to keep a margin of 5 bytes so that\n we don't go over the block size with a copy. */\n const size_t len_limit = BROTLI_MIN(size_t, block_size - kMinMatchLen,\n input_size - kInputMarginBytes);\n const uint8_t* ip_limit = input + len_limit;\n\n uint32_t next_hash;\n for (next_hash = Hash(++ip, shift); ; ) {\n /* Step 1: Scan forward in the input looking for a 5-byte-long match.\n If we get close to exhausting the input then goto emit_remainder.\n\n Heuristic match skipping: If 32 bytes are scanned with no matches\n found, start looking only at every other byte. If 32 more bytes are\n scanned, look at every third byte, etc.. When a match is found,\n immediately go back to looking at every byte. This is a small loss\n (~5% performance, ~0.1% density) for compressible data due to more\n bookkeeping, but for non-compressible data (such as JPEG) it's a huge\n win since the compressor quickly \"realizes\" the data is incompressible\n and doesn't bother looking for matches everywhere.\n\n The \"skip\" variable keeps track of how many bytes there are since the\n last match; dividing it by 32 (i.e. right-shifting by five) gives the\n number of bytes to move ahead for each iteration. */\n uint32_t skip = 32;\n\n const uint8_t* next_ip = ip;\n const uint8_t* candidate;\n BROTLI_DCHECK(next_emit < ip);\ntrawl:\n do {\n uint32_t hash = next_hash;\n uint32_t bytes_between_hash_lookups = skip++ >> 5;\n BROTLI_DCHECK(hash == Hash(next_ip, shift));\n ip = next_ip;\n next_ip = ip + bytes_between_hash_lookups;\n if (BROTLI_PREDICT_FALSE(next_ip > ip_limit)) {\n goto emit_remainder;\n }\n next_hash = Hash(next_ip, shift);\n candidate = ip - last_distance;\n if (IsMatch(ip, candidate)) {\n if (BROTLI_PREDICT_TRUE(candidate < ip)) {\n table[hash] = (int)(ip - base_ip);\n break;\n }\n }\n candidate = base_ip + table[hash];\n BROTLI_DCHECK(candidate >= base_ip);\n BROTLI_DCHECK(candidate < ip);\n\n table[hash] = (int)(ip - base_ip);\n } while (BROTLI_PREDICT_TRUE(!IsMatch(ip, candidate)));\n\n /* Check copy distance. If candidate is not feasible, continue search.\n Checking is done outside of hot loop to reduce overhead. */\n if (ip - candidate > MAX_DISTANCE) goto trawl;\n\n /* Step 2: Emit the found match together with the literal bytes from\n \"next_emit\" to the bit stream, and then see if we can find a next match\n immediately afterwards. Repeat until we find no match for the input\n without emitting some literal bytes. */\n\n {\n /* We have a 5-byte match at ip, and we need to emit bytes in\n [next_emit, ip). */\n const uint8_t* base = ip;\n size_t matched = 5 + FindMatchLengthWithLimit(\n candidate + 5, ip + 5, (size_t)(ip_end - ip) - 5);\n int distance = (int)(base - candidate); /* > 0 */\n size_t insert = (size_t)(base - next_emit);\n ip += matched;\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %lu copy = %d\\n\",\n (int)(next_emit - base_ip), (unsigned long)insert, 2));\n BROTLI_DCHECK(0 == memcmp(base, candidate, matched));\n if (BROTLI_PREDICT_TRUE(insert < 6210)) {\n EmitInsertLen(insert, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n } else if (ShouldUseUncompressedMode(metablock_start, next_emit, insert,\n literal_ratio)) {\n EmitUncompressedMetaBlock(metablock_start, base, mlen_storage_ix - 3,\n storage_ix, storage);\n input_size -= (size_t)(base - input);\n input = base;\n next_emit = input;\n goto next_block;\n } else {\n EmitLongInsertLen(insert, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n }\n EmitLiterals(next_emit, insert, lit_depth, lit_bits,\n storage_ix, storage);\n if (distance == last_distance) {\n BrotliWriteBits(cmd_depth[64], cmd_bits[64], storage_ix, storage);\n ++cmd_histo[64];\n } else {\n EmitDistance((size_t)distance, cmd_depth, cmd_bits,\n cmd_histo, storage_ix, storage);\n last_distance = distance;\n }\n EmitCopyLenLastDistance(matched, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n BROTLI_LOG((\"[CompressFragment] pos = %d distance = %d\\n\"\n \"[CompressFragment] pos = %d insert = %d copy = %d\\n\"\n \"[CompressFragment] pos = %d distance = %d\\n\",\n (int)(base - base_ip), (int)distance,\n (int)(base - base_ip) + 2, 0, (int)matched - 2,\n (int)(base - base_ip) + 2, (int)distance));\n\n next_emit = ip;\n if (BROTLI_PREDICT_FALSE(ip >= ip_limit)) {\n goto emit_remainder;\n }\n /* We could immediately start working at ip now, but to improve\n compression we first update \"table\" with the hashes of some positions\n within the last copy. */\n {\n uint64_t input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 3);\n uint32_t prev_hash = HashBytesAtOffset(input_bytes, 0, shift);\n uint32_t cur_hash = HashBytesAtOffset(input_bytes, 3, shift);\n table[prev_hash] = (int)(ip - base_ip - 3);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 2, shift);\n table[prev_hash] = (int)(ip - base_ip - 1);\n\n candidate = base_ip + table[cur_hash];\n table[cur_hash] = (int)(ip - base_ip);\n }\n }\n\n while (IsMatch(ip, candidate)) {\n /* We have a 5-byte match at ip, and no need to emit any literal bytes\n prior to ip. */\n const uint8_t* base = ip;\n size_t matched = 5 + FindMatchLengthWithLimit(\n candidate + 5, ip + 5, (size_t)(ip_end - ip) - 5);\n if (ip - candidate > MAX_DISTANCE) break;\n ip += matched;\n last_distance = (int)(base - candidate); /* > 0 */\n BROTLI_DCHECK(0 == memcmp(base, candidate, matched));\n EmitCopyLen(matched, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n EmitDistance((size_t)last_distance, cmd_depth, cmd_bits,\n cmd_histo, storage_ix, storage);\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %d copy = %d\\n\"\n \"[CompressFragment] pos = %d distance = %d\\n\",\n (int)(base - base_ip), 0, (int)matched,\n (int)(base - base_ip), (int)last_distance));\n\n next_emit = ip;\n if (BROTLI_PREDICT_FALSE(ip >= ip_limit)) {\n goto emit_remainder;\n }\n /* We could immediately start working at ip now, but to improve\n compression we first update \"table\" with the hashes of some positions\n within the last copy. */\n {\n uint64_t input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 3);\n uint32_t prev_hash = HashBytesAtOffset(input_bytes, 0, shift);\n uint32_t cur_hash = HashBytesAtOffset(input_bytes, 3, shift);\n table[prev_hash] = (int)(ip - base_ip - 3);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 2, shift);\n table[prev_hash] = (int)(ip - base_ip - 1);\n\n candidate = base_ip + table[cur_hash];\n table[cur_hash] = (int)(ip - base_ip);\n }\n }\n\n next_hash = Hash(++ip, shift);\n }\n }\n\n emit_remainder:\n BROTLI_DCHECK(next_emit <= ip_end);\n input += block_size;\n input_size -= block_size;\n block_size = BROTLI_MIN(size_t, input_size, kMergeBlockSize);\n\n /* Decide if we want to continue this meta-block instead of emitting the\n last insert-only command. */\n if (input_size > 0 &&\n total_block_size + block_size <= (1 << 20) &&\n ShouldMergeBlock(s, input, block_size, lit_depth)) {\n BROTLI_DCHECK(total_block_size > (1 << 16));\n /* Update the size of the current meta-block and continue emitting commands.\n We can do this because the current size and the new size both have 5\n nibbles. */\n total_block_size += block_size;\n UpdateBits(20, (uint32_t)(total_block_size - 1), mlen_storage_ix, storage);\n goto emit_commands;\n }\n\n /* Emit the remaining bytes as literals. */\n if (next_emit < ip_end) {\n const size_t insert = (size_t)(ip_end - next_emit);\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %lu copy = %d\\n\",\n (int)(next_emit - base_ip), (unsigned long)insert, 2));\n if (BROTLI_PREDICT_TRUE(insert < 6210)) {\n EmitInsertLen(insert, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n EmitLiterals(next_emit, insert, lit_depth, lit_bits, storage_ix, storage);\n } else if (ShouldUseUncompressedMode(metablock_start, next_emit, insert,\n literal_ratio)) {\n EmitUncompressedMetaBlock(metablock_start, ip_end, mlen_storage_ix - 3,\n storage_ix, storage);\n } else {\n EmitLongInsertLen(insert, cmd_depth, cmd_bits, cmd_histo,\n storage_ix, storage);\n EmitLiterals(next_emit, insert, lit_depth, lit_bits,\n storage_ix, storage);\n }\n }\n next_emit = ip_end;\n\nnext_block:\n /* If we have more data, write a new meta-block header and prefix codes and\n then continue emitting commands. */\n if (input_size > 0) {\n metablock_start = input;\n block_size = BROTLI_MIN(size_t, input_size, kFirstBlockSize);\n total_block_size = block_size;\n /* Save the bit position of the MLEN field of the meta-block header, so that\n we can update it later if we decide to extend this meta-block. */\n mlen_storage_ix = *storage_ix + 3;\n BrotliStoreMetaBlockHeader(block_size, 0, storage_ix, storage);\n /* No block splits, no contexts. */\n BrotliWriteBits(13, 0, storage_ix, storage);\n literal_ratio = BuildAndStoreLiteralPrefixCode(\n s, input, block_size, lit_depth, lit_bits, storage_ix, storage);\n BuildAndStoreCommandPrefixCode(s, storage_ix, storage);\n goto emit_commands;\n }\n\n if (!is_last) {\n /* If this is not the last block, update the command and distance prefix\n codes for the next block and store the compressed forms. */\n s->cmd_code[0] = 0;\n s->cmd_code_numbits = 0;\n BuildAndStoreCommandPrefixCode(s, &s->cmd_code_numbits, s->cmd_code);\n }\n}\n\n#define FOR_TABLE_BITS_(X) X(9) X(11) X(13) X(15)\n\n#define BAKE_METHOD_PARAM_(B) \\\nstatic BROTLI_NOINLINE void BrotliCompressFragmentFastImpl ## B( \\\n BrotliOnePassArena* s, const uint8_t* input, size_t input_size, \\\n BROTLI_BOOL is_last, int* table, size_t* storage_ix, uint8_t* storage) { \\\n BrotliCompressFragmentFastImpl(s, input, input_size, is_last, table, B, \\\n storage_ix, storage); \\\n}\nFOR_TABLE_BITS_(BAKE_METHOD_PARAM_)\n#undef BAKE_METHOD_PARAM_\n\nvoid BrotliCompressFragmentFast(\n BrotliOnePassArena* s, const uint8_t* input, size_t input_size,\n BROTLI_BOOL is_last, int* table, size_t table_size,\n size_t* storage_ix, uint8_t* storage) {\n const size_t initial_storage_ix = *storage_ix;\n const size_t table_bits = Log2FloorNonZero(table_size);\n\n if (input_size == 0) {\n BROTLI_DCHECK(is_last);\n BrotliWriteBits(1, 1, storage_ix, storage); /* islast */\n BrotliWriteBits(1, 1, storage_ix, storage); /* isempty */\n *storage_ix = (*storage_ix + 7u) & ~7u;\n return;\n }\n\n switch (table_bits) {\n#define CASE_(B) \\\n case B: \\\n BrotliCompressFragmentFastImpl ## B( \\\n s, input, input_size, is_last, table, storage_ix, storage);\\\n break;\n FOR_TABLE_BITS_(CASE_)\n#undef CASE_\n default: BROTLI_DCHECK(0); break;\n }\n\n /* If output is larger than single uncompressed block, rewrite it. */\n if (*storage_ix - initial_storage_ix > 31 + (input_size << 3)) {\n EmitUncompressedMetaBlock(input, input + input_size, initial_storage_ix,\n storage_ix, storage);\n }\n\n if (is_last) {\n BrotliWriteBits(1, 1, storage_ix, storage); /* islast */\n BrotliWriteBits(1, 1, storage_ix, storage); /* isempty */\n *storage_ix = (*storage_ix + 7u) & ~7u;\n }\n}\n\n#undef FOR_TABLE_BITS_\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/compress_fragment.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function for fast encoding of an input fragment, independently from the input\n history. This function uses one-pass processing: when we find a backward\n match, we immediately emit the corresponding command and literal codes to\n the bit stream. */\n\n#ifndef BROTLI_ENC_COMPRESS_FRAGMENT_H_\n#define BROTLI_ENC_COMPRESS_FRAGMENT_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"entropy_encode.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct BrotliOnePassArena {\n uint8_t lit_depth[256];\n uint16_t lit_bits[256];\n\n /* Command and distance prefix codes (each 64 symbols, stored back-to-back)\n used for the next block. The command prefix code is over a smaller alphabet\n with the following 64 symbols:\n 0 - 15: insert length code 0, copy length code 0 - 15, same distance\n 16 - 39: insert length code 0, copy length code 0 - 23\n 40 - 63: insert length code 0 - 23, copy length code 0\n Note that symbols 16 and 40 represent the same code in the full alphabet,\n but we do not use either of them. */\n uint8_t cmd_depth[128];\n uint16_t cmd_bits[128];\n uint32_t cmd_histo[128];\n\n /* The compressed form of the command and distance prefix codes for the next\n block. */\n uint8_t cmd_code[512];\n size_t cmd_code_numbits;\n\n HuffmanTree tree[2 * BROTLI_NUM_LITERAL_SYMBOLS + 1];\n uint32_t histogram[256];\n uint8_t tmp_depth[BROTLI_NUM_COMMAND_SYMBOLS];\n uint16_t tmp_bits[64];\n} BrotliOnePassArena;\n\n/* Compresses \"input\" string to the \"*storage\" buffer as one or more complete\n meta-blocks, and updates the \"*storage_ix\" bit position.\n\n If \"is_last\" is 1, emits an additional empty last meta-block.\n\n \"cmd_depth\" and \"cmd_bits\" contain the command and distance prefix codes\n (see comment in encode.h) used for the encoding of this input fragment.\n If \"is_last\" is 0, they are updated to reflect the statistics\n of this input fragment, to be used for the encoding of the next fragment.\n\n \"*cmd_code_numbits\" is the number of bits of the compressed representation\n of the command and distance prefix codes, and \"cmd_code\" is an array of\n at least \"(*cmd_code_numbits + 7) >> 3\" size that contains the compressed\n command and distance prefix codes. If \"is_last\" is 0, these are also\n updated to represent the updated \"cmd_depth\" and \"cmd_bits\".\n\n REQUIRES: \"input_size\" is greater than zero, or \"is_last\" is 1.\n REQUIRES: \"input_size\" is less or equal to maximal metablock size (1 << 24).\n REQUIRES: All elements in \"table[0..table_size-1]\" are initialized to zero.\n REQUIRES: \"table_size\" is an odd (9, 11, 13, 15) power of two\n OUTPUT: maximal copy distance <= |input_size|\n OUTPUT: maximal copy distance <= BROTLI_MAX_BACKWARD_LIMIT(18) */\nBROTLI_INTERNAL void BrotliCompressFragmentFast(BrotliOnePassArena* s,\n const uint8_t* input,\n size_t input_size,\n BROTLI_BOOL is_last,\n int* table, size_t table_size,\n size_t* storage_ix,\n uint8_t* storage);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_COMPRESS_FRAGMENT_H_ */\n" }, { "path": "c/enc/compress_fragment_two_pass.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function for fast encoding of an input fragment, independently from the input\n history. This function uses two-pass processing: in the first pass we save\n the found backward matches and literal bytes into a buffer, and in the\n second pass we emit them into the bit stream using prefix codes built based\n on the actual command and literal byte histograms. */\n\n#include \"compress_fragment_two_pass.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"bit_cost.h\"\n#include \"brotli_bit_stream.h\"\n#include \"entropy_encode.h\"\n#include \"fast_log.h\"\n#include \"find_match_length.h\"\n#include \"hash_base.h\"\n#include \"write_bits.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define MAX_DISTANCE (long)BROTLI_MAX_BACKWARD_LIMIT(18)\n\nstatic BROTLI_INLINE uint32_t Hash(const uint8_t* p,\n size_t shift, size_t length) {\n const uint64_t h =\n (BROTLI_UNALIGNED_LOAD64LE(p) << ((8 - length) * 8)) * kHashMul32;\n return (uint32_t)(h >> shift);\n}\n\nstatic BROTLI_INLINE uint32_t HashBytesAtOffset(uint64_t v, size_t offset,\n size_t shift, size_t length) {\n BROTLI_DCHECK(offset <= 8 - length);\n {\n const uint64_t h = ((v >> (8 * offset)) << ((8 - length) * 8)) * kHashMul32;\n return (uint32_t)(h >> shift);\n }\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL IsMatch(const uint8_t* p1, const uint8_t* p2,\n size_t length) {\n if (BrotliUnalignedRead32(p1) == BrotliUnalignedRead32(p2)) {\n if (length == 4) return BROTLI_TRUE;\n return TO_BROTLI_BOOL(p1[4] == p2[4] && p1[5] == p2[5]);\n }\n return BROTLI_FALSE;\n}\n\n/* Builds a command and distance prefix code (each 64 symbols) into \"depth\" and\n \"bits\" based on \"histogram\" and stores it into the bit stream. */\nstatic void BuildAndStoreCommandPrefixCode(BrotliTwoPassArena* s,\n size_t* storage_ix,\n uint8_t* storage) {\n /* Tree size for building a tree over 64 symbols is 2 * 64 + 1. */\n /* TODO(eustas): initialize once. */\n memset(s->tmp_depth, 0, sizeof(s->tmp_depth));\n BrotliCreateHuffmanTree(s->cmd_histo, 64, 15, s->tmp_tree, s->cmd_depth);\n BrotliCreateHuffmanTree(&s->cmd_histo[64], 64, 14, s->tmp_tree,\n &s->cmd_depth[64]);\n /* We have to jump through a few hoops here in order to compute\n the command bits because the symbols are in a different order than in\n the full alphabet. This looks complicated, but having the symbols\n in this order in the command bits saves a few branches in the Emit*\n functions. */\n memcpy(s->tmp_depth, s->cmd_depth + 24, 24);\n memcpy(s->tmp_depth + 24, s->cmd_depth, 8);\n memcpy(s->tmp_depth + 32, s->cmd_depth + 48, 8);\n memcpy(s->tmp_depth + 40, s->cmd_depth + 8, 8);\n memcpy(s->tmp_depth + 48, s->cmd_depth + 56, 8);\n memcpy(s->tmp_depth + 56, s->cmd_depth + 16, 8);\n BrotliConvertBitDepthsToSymbols(s->tmp_depth, 64, s->tmp_bits);\n memcpy(s->cmd_bits, s->tmp_bits + 24, 16);\n memcpy(s->cmd_bits + 8, s->tmp_bits + 40, 16);\n memcpy(s->cmd_bits + 16, s->tmp_bits + 56, 16);\n memcpy(s->cmd_bits + 24, s->tmp_bits, 48);\n memcpy(s->cmd_bits + 48, s->tmp_bits + 32, 16);\n memcpy(s->cmd_bits + 56, s->tmp_bits + 48, 16);\n BrotliConvertBitDepthsToSymbols(&s->cmd_depth[64], 64, &s->cmd_bits[64]);\n {\n /* Create the bit length array for the full command alphabet. */\n size_t i;\n memset(s->tmp_depth, 0, 64); /* only 64 first values were used */\n memcpy(s->tmp_depth, s->cmd_depth + 24, 8);\n memcpy(s->tmp_depth + 64, s->cmd_depth + 32, 8);\n memcpy(s->tmp_depth + 128, s->cmd_depth + 40, 8);\n memcpy(s->tmp_depth + 192, s->cmd_depth + 48, 8);\n memcpy(s->tmp_depth + 384, s->cmd_depth + 56, 8);\n for (i = 0; i < 8; ++i) {\n s->tmp_depth[128 + 8 * i] = s->cmd_depth[i];\n s->tmp_depth[256 + 8 * i] = s->cmd_depth[8 + i];\n s->tmp_depth[448 + 8 * i] = s->cmd_depth[16 + i];\n }\n BrotliStoreHuffmanTree(s->tmp_depth, BROTLI_NUM_COMMAND_SYMBOLS,\n s->tmp_tree, storage_ix, storage);\n }\n BrotliStoreHuffmanTree(&s->cmd_depth[64], 64, s->tmp_tree, storage_ix,\n storage);\n}\n\nstatic BROTLI_INLINE void EmitInsertLen(\n uint32_t insertlen, uint32_t** commands) {\n if (insertlen < 6) {\n **commands = insertlen;\n } else if (insertlen < 130) {\n const uint32_t tail = insertlen - 2;\n const uint32_t nbits = Log2FloorNonZero(tail) - 1u;\n const uint32_t prefix = tail >> nbits;\n const uint32_t inscode = (nbits << 1) + prefix + 2;\n const uint32_t extra = tail - (prefix << nbits);\n **commands = inscode | (extra << 8);\n } else if (insertlen < 2114) {\n const uint32_t tail = insertlen - 66;\n const uint32_t nbits = Log2FloorNonZero(tail);\n const uint32_t code = nbits + 10;\n const uint32_t extra = tail - (1u << nbits);\n **commands = code | (extra << 8);\n } else if (insertlen < 6210) {\n const uint32_t extra = insertlen - 2114;\n **commands = 21 | (extra << 8);\n } else if (insertlen < 22594) {\n const uint32_t extra = insertlen - 6210;\n **commands = 22 | (extra << 8);\n } else {\n const uint32_t extra = insertlen - 22594;\n **commands = 23 | (extra << 8);\n }\n ++(*commands);\n}\n\nstatic BROTLI_INLINE void EmitCopyLen(size_t copylen, uint32_t** commands) {\n if (copylen < 10) {\n **commands = (uint32_t)(copylen + 38);\n } else if (copylen < 134) {\n const size_t tail = copylen - 6;\n const size_t nbits = Log2FloorNonZero(tail) - 1;\n const size_t prefix = tail >> nbits;\n const size_t code = (nbits << 1) + prefix + 44;\n const size_t extra = tail - (prefix << nbits);\n **commands = (uint32_t)(code | (extra << 8));\n } else if (copylen < 2118) {\n const size_t tail = copylen - 70;\n const size_t nbits = Log2FloorNonZero(tail);\n const size_t code = nbits + 52;\n const size_t extra = tail - ((size_t)1 << nbits);\n **commands = (uint32_t)(code | (extra << 8));\n } else {\n const size_t extra = copylen - 2118;\n **commands = (uint32_t)(63 | (extra << 8));\n }\n ++(*commands);\n}\n\nstatic BROTLI_INLINE void EmitCopyLenLastDistance(\n size_t copylen, uint32_t** commands) {\n if (copylen < 12) {\n **commands = (uint32_t)(copylen + 20);\n ++(*commands);\n } else if (copylen < 72) {\n const size_t tail = copylen - 8;\n const size_t nbits = Log2FloorNonZero(tail) - 1;\n const size_t prefix = tail >> nbits;\n const size_t code = (nbits << 1) + prefix + 28;\n const size_t extra = tail - (prefix << nbits);\n **commands = (uint32_t)(code | (extra << 8));\n ++(*commands);\n } else if (copylen < 136) {\n const size_t tail = copylen - 8;\n const size_t code = (tail >> 5) + 54;\n const size_t extra = tail & 31;\n **commands = (uint32_t)(code | (extra << 8));\n ++(*commands);\n **commands = 64;\n ++(*commands);\n } else if (copylen < 2120) {\n const size_t tail = copylen - 72;\n const size_t nbits = Log2FloorNonZero(tail);\n const size_t code = nbits + 52;\n const size_t extra = tail - ((size_t)1 << nbits);\n **commands = (uint32_t)(code | (extra << 8));\n ++(*commands);\n **commands = 64;\n ++(*commands);\n } else {\n const size_t extra = copylen - 2120;\n **commands = (uint32_t)(63 | (extra << 8));\n ++(*commands);\n **commands = 64;\n ++(*commands);\n }\n}\n\nstatic BROTLI_INLINE void EmitDistance(uint32_t distance, uint32_t** commands) {\n uint32_t d = distance + 3;\n uint32_t nbits = Log2FloorNonZero(d) - 1;\n const uint32_t prefix = (d >> nbits) & 1;\n const uint32_t offset = (2 + prefix) << nbits;\n const uint32_t distcode = 2 * (nbits - 1) + prefix + 80;\n uint32_t extra = d - offset;\n **commands = distcode | (extra << 8);\n ++(*commands);\n}\n\n/* REQUIRES: len <= 1 << 24. */\nstatic void BrotliStoreMetaBlockHeader(\n size_t len, BROTLI_BOOL is_uncompressed, size_t* storage_ix,\n uint8_t* storage) {\n size_t nibbles = 6;\n /* ISLAST */\n BrotliWriteBits(1, 0, storage_ix, storage);\n if (len <= (1U << 16)) {\n nibbles = 4;\n } else if (len <= (1U << 20)) {\n nibbles = 5;\n }\n BrotliWriteBits(2, nibbles - 4, storage_ix, storage);\n BrotliWriteBits(nibbles * 4, len - 1, storage_ix, storage);\n /* ISUNCOMPRESSED */\n BrotliWriteBits(1, (uint64_t)is_uncompressed, storage_ix, storage);\n}\n\nstatic BROTLI_INLINE void CreateCommands(const uint8_t* input,\n size_t block_size, size_t input_size, const uint8_t* base_ip, int* table,\n size_t table_bits, size_t min_match,\n uint8_t** literals, uint32_t** commands) {\n /* \"ip\" is the input pointer. */\n const uint8_t* ip = input;\n const size_t shift = 64u - table_bits;\n const uint8_t* ip_end = input + block_size;\n /* \"next_emit\" is a pointer to the first byte that is not covered by a\n previous copy. Bytes between \"next_emit\" and the start of the next copy or\n the end of the input will be emitted as literal bytes. */\n const uint8_t* next_emit = input;\n\n int last_distance = -1;\n const size_t kInputMarginBytes = BROTLI_WINDOW_GAP;\n\n if (BROTLI_PREDICT_TRUE(block_size >= kInputMarginBytes)) {\n /* For the last block, we need to keep a 16 bytes margin so that we can be\n sure that all distances are at most window size - 16.\n For all other blocks, we only need to keep a margin of 5 bytes so that\n we don't go over the block size with a copy. */\n const size_t len_limit = BROTLI_MIN(size_t, block_size - min_match,\n input_size - kInputMarginBytes);\n const uint8_t* ip_limit = input + len_limit;\n\n uint32_t next_hash;\n for (next_hash = Hash(++ip, shift, min_match); ; ) {\n /* Step 1: Scan forward in the input looking for a 6-byte-long match.\n If we get close to exhausting the input then goto emit_remainder.\n\n Heuristic match skipping: If 32 bytes are scanned with no matches\n found, start looking only at every other byte. If 32 more bytes are\n scanned, look at every third byte, etc.. When a match is found,\n immediately go back to looking at every byte. This is a small loss\n (~5% performance, ~0.1% density) for compressible data due to more\n bookkeeping, but for non-compressible data (such as JPEG) it's a huge\n win since the compressor quickly \"realizes\" the data is incompressible\n and doesn't bother looking for matches everywhere.\n\n The \"skip\" variable keeps track of how many bytes there are since the\n last match; dividing it by 32 (ie. right-shifting by five) gives the\n number of bytes to move ahead for each iteration. */\n uint32_t skip = 32;\n\n const uint8_t* next_ip = ip;\n const uint8_t* candidate;\n\n BROTLI_DCHECK(next_emit < ip);\ntrawl:\n do {\n uint32_t hash = next_hash;\n uint32_t bytes_between_hash_lookups = skip++ >> 5;\n ip = next_ip;\n BROTLI_DCHECK(hash == Hash(ip, shift, min_match));\n next_ip = ip + bytes_between_hash_lookups;\n if (BROTLI_PREDICT_FALSE(next_ip > ip_limit)) {\n goto emit_remainder;\n }\n next_hash = Hash(next_ip, shift, min_match);\n candidate = ip - last_distance;\n if (IsMatch(ip, candidate, min_match)) {\n if (BROTLI_PREDICT_TRUE(candidate < ip)) {\n table[hash] = (int)(ip - base_ip);\n break;\n }\n }\n candidate = base_ip + table[hash];\n BROTLI_DCHECK(candidate >= base_ip);\n BROTLI_DCHECK(candidate < ip);\n\n table[hash] = (int)(ip - base_ip);\n } while (BROTLI_PREDICT_TRUE(!IsMatch(ip, candidate, min_match)));\n\n /* Check copy distance. If candidate is not feasible, continue search.\n Checking is done outside of hot loop to reduce overhead. */\n if (ip - candidate > MAX_DISTANCE) goto trawl;\n\n /* Step 2: Emit the found match together with the literal bytes from\n \"next_emit\", and then see if we can find a next match immediately\n afterwards. Repeat until we find no match for the input\n without emitting some literal bytes. */\n\n {\n /* We have a 6-byte match at ip, and we need to emit bytes in\n [next_emit, ip). */\n const uint8_t* base = ip;\n size_t matched = min_match + FindMatchLengthWithLimit(\n candidate + min_match, ip + min_match,\n (size_t)(ip_end - ip) - min_match);\n int distance = (int)(base - candidate); /* > 0 */\n int insert = (int)(base - next_emit);\n ip += matched;\n BROTLI_DCHECK(0 == memcmp(base, candidate, matched));\n EmitInsertLen((uint32_t)insert, commands);\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %d copy = %d\\n\",\n (int)(next_emit - base_ip), insert, 2));\n memcpy(*literals, next_emit, (size_t)insert);\n *literals += insert;\n if (distance == last_distance) {\n **commands = 64;\n ++(*commands);\n } else {\n EmitDistance((uint32_t)distance, commands);\n last_distance = distance;\n }\n EmitCopyLenLastDistance(matched, commands);\n BROTLI_LOG((\"[CompressFragment] pos = %d distance = %d\\n\"\n \"[CompressFragment] pos = %d insert = %d copy = %d\\n\"\n \"[CompressFragment] pos = %d distance = %d\\n\",\n (int)(base - base_ip), (int)distance,\n (int)(base - base_ip) + 2, 0, (int)matched - 2,\n (int)(base - base_ip) + 2, (int)distance));\n\n next_emit = ip;\n if (BROTLI_PREDICT_FALSE(ip >= ip_limit)) {\n goto emit_remainder;\n }\n {\n /* We could immediately start working at ip now, but to improve\n compression we first update \"table\" with the hashes of some\n positions within the last copy. */\n uint64_t input_bytes;\n uint32_t cur_hash;\n uint32_t prev_hash;\n if (min_match == 4) {\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 3);\n cur_hash = HashBytesAtOffset(input_bytes, 3, shift, min_match);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 3);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 1);\n } else {\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 5);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 5);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 4);\n prev_hash = HashBytesAtOffset(input_bytes, 2, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 3);\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 2);\n cur_hash = HashBytesAtOffset(input_bytes, 2, shift, min_match);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 1);\n }\n\n candidate = base_ip + table[cur_hash];\n table[cur_hash] = (int)(ip - base_ip);\n }\n }\n\n while (ip - candidate <= MAX_DISTANCE &&\n IsMatch(ip, candidate, min_match)) {\n /* We have a 6-byte match at ip, and no need to emit any\n literal bytes prior to ip. */\n const uint8_t* base = ip;\n size_t matched = min_match + FindMatchLengthWithLimit(\n candidate + min_match, ip + min_match,\n (size_t)(ip_end - ip) - min_match);\n ip += matched;\n last_distance = (int)(base - candidate); /* > 0 */\n BROTLI_DCHECK(0 == memcmp(base, candidate, matched));\n EmitCopyLen(matched, commands);\n EmitDistance((uint32_t)last_distance, commands);\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %d copy = %d\\n\"\n \"[CompressFragment] pos = %d distance = %d\\n\",\n (int)(base - base_ip), 0, (int)matched,\n (int)(base - base_ip), (int)last_distance));\n\n next_emit = ip;\n if (BROTLI_PREDICT_FALSE(ip >= ip_limit)) {\n goto emit_remainder;\n }\n {\n /* We could immediately start working at ip now, but to improve\n compression we first update \"table\" with the hashes of some\n positions within the last copy. */\n uint64_t input_bytes;\n uint32_t cur_hash;\n uint32_t prev_hash;\n if (min_match == 4) {\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 3);\n cur_hash = HashBytesAtOffset(input_bytes, 3, shift, min_match);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 3);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 2, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 1);\n } else {\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 5);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 5);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 4);\n prev_hash = HashBytesAtOffset(input_bytes, 2, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 3);\n input_bytes = BROTLI_UNALIGNED_LOAD64LE(ip - 2);\n cur_hash = HashBytesAtOffset(input_bytes, 2, shift, min_match);\n prev_hash = HashBytesAtOffset(input_bytes, 0, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 2);\n prev_hash = HashBytesAtOffset(input_bytes, 1, shift, min_match);\n table[prev_hash] = (int)(ip - base_ip - 1);\n }\n\n candidate = base_ip + table[cur_hash];\n table[cur_hash] = (int)(ip - base_ip);\n }\n }\n\n next_hash = Hash(++ip, shift, min_match);\n }\n }\n\nemit_remainder:\n BROTLI_DCHECK(next_emit <= ip_end);\n /* Emit the remaining bytes as literals. */\n if (next_emit < ip_end) {\n const uint32_t insert = (uint32_t)(ip_end - next_emit);\n EmitInsertLen(insert, commands);\n BROTLI_LOG((\"[CompressFragment] pos = %d insert = %d copy = %d\\n\",\n (int)(next_emit - base_ip), insert, 2));\n memcpy(*literals, next_emit, insert);\n *literals += insert;\n }\n}\n\nstatic void StoreCommands(BrotliTwoPassArena* s,\n const uint8_t* literals, const size_t num_literals,\n const uint32_t* commands, const size_t num_commands,\n size_t* storage_ix, uint8_t* storage) {\n static const BROTLI_MODEL(\"small\") uint32_t kNumExtraBits[128] = {\n 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5,\n 6, 7, 8, 9, 10, 12, 14, 24, 0, 0, 0, 0, 0, 0, 0, 0,\n 1, 1, 2, 2, 3, 3, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0,\n 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 8, 9, 10, 24,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8,\n 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16,\n 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24,\n };\n static const BROTLI_MODEL(\"small\") uint32_t kInsertOffset[24] = {\n 0, 1, 2, 3, 4, 5, 6, 8, 10, 14, 18, 26,\n 34, 50, 66, 98, 130, 194, 322, 578, 1090, 2114, 6210, 22594,\n };\n\n size_t i;\n memset(s->lit_histo, 0, sizeof(s->lit_histo));\n /* TODO(eustas): is that necessary? */\n memset(s->cmd_depth, 0, sizeof(s->cmd_depth));\n /* TODO(eustas): is that necessary? */\n memset(s->cmd_bits, 0, sizeof(s->cmd_bits));\n memset(s->cmd_histo, 0, sizeof(s->cmd_histo));\n for (i = 0; i < num_literals; ++i) {\n ++s->lit_histo[literals[i]];\n }\n BrotliBuildAndStoreHuffmanTreeFast(s->tmp_tree, s->lit_histo, num_literals,\n /* max_bits = */ 8, s->lit_depth,\n s->lit_bits, storage_ix, storage);\n\n for (i = 0; i < num_commands; ++i) {\n const uint32_t code = commands[i] & 0xFF;\n BROTLI_DCHECK(code < 128);\n ++s->cmd_histo[code];\n }\n s->cmd_histo[1] += 1;\n s->cmd_histo[2] += 1;\n s->cmd_histo[64] += 1;\n s->cmd_histo[84] += 1;\n BuildAndStoreCommandPrefixCode(s, storage_ix, storage);\n\n for (i = 0; i < num_commands; ++i) {\n const uint32_t cmd = commands[i];\n const uint32_t code = cmd & 0xFF;\n const uint32_t extra = cmd >> 8;\n BROTLI_DCHECK(code < 128);\n BrotliWriteBits(s->cmd_depth[code], s->cmd_bits[code], storage_ix, storage);\n BrotliWriteBits(kNumExtraBits[code], extra, storage_ix, storage);\n if (code < 24) {\n const uint32_t insert = kInsertOffset[code] + extra;\n uint32_t j;\n for (j = 0; j < insert; ++j) {\n const uint8_t lit = *literals;\n BrotliWriteBits(s->lit_depth[lit], s->lit_bits[lit], storage_ix,\n storage);\n ++literals;\n }\n }\n }\n}\n\n/* Acceptable loss for uncompressible speedup is 2% */\n#define MIN_RATIO 0.98\n#define SAMPLE_RATE 43\n\nstatic BROTLI_BOOL ShouldCompress(BrotliTwoPassArena* s,\n const uint8_t* input, size_t input_size, size_t num_literals) {\n double corpus_size = (double)input_size;\n if ((double)num_literals < MIN_RATIO * corpus_size) {\n return BROTLI_TRUE;\n } else {\n const double max_total_bit_cost = corpus_size * 8 * MIN_RATIO / SAMPLE_RATE;\n size_t i;\n memset(s->lit_histo, 0, sizeof(s->lit_histo));\n for (i = 0; i < input_size; i += SAMPLE_RATE) {\n ++s->lit_histo[input[i]];\n }\n return TO_BROTLI_BOOL(\n BrotliBitsEntropy(s->lit_histo, 256) < max_total_bit_cost);\n }\n}\n\nstatic void RewindBitPosition(const size_t new_storage_ix,\n size_t* storage_ix, uint8_t* storage) {\n const size_t bitpos = new_storage_ix & 7;\n const size_t mask = (1u << bitpos) - 1;\n storage[new_storage_ix >> 3] &= (uint8_t)mask;\n *storage_ix = new_storage_ix;\n}\n\nstatic void EmitUncompressedMetaBlock(const uint8_t* input, size_t input_size,\n size_t* storage_ix, uint8_t* storage) {\n BrotliStoreMetaBlockHeader(input_size, 1, storage_ix, storage);\n *storage_ix = (*storage_ix + 7u) & ~7u;\n memcpy(&storage[*storage_ix >> 3], input, input_size);\n *storage_ix += input_size << 3;\n storage[*storage_ix >> 3] = 0;\n}\n\nstatic BROTLI_INLINE void BrotliCompressFragmentTwoPassImpl(\n BrotliTwoPassArena* s, const uint8_t* input, size_t input_size,\n BROTLI_BOOL is_last, uint32_t* command_buf, uint8_t* literal_buf,\n int* table, size_t table_bits, size_t min_match,\n size_t* storage_ix, uint8_t* storage) {\n /* Save the start of the first block for position and distance computations.\n */\n const uint8_t* base_ip = input;\n BROTLI_UNUSED(is_last);\n\n while (input_size > 0) {\n size_t block_size =\n BROTLI_MIN(size_t, input_size, kCompressFragmentTwoPassBlockSize);\n uint32_t* commands = command_buf;\n uint8_t* literals = literal_buf;\n size_t num_literals;\n CreateCommands(input, block_size, input_size, base_ip, table,\n table_bits, min_match, &literals, &commands);\n num_literals = (size_t)(literals - literal_buf);\n if (ShouldCompress(s, input, block_size, num_literals)) {\n const size_t num_commands = (size_t)(commands - command_buf);\n BrotliStoreMetaBlockHeader(block_size, 0, storage_ix, storage);\n /* No block splits, no contexts. */\n BrotliWriteBits(13, 0, storage_ix, storage);\n StoreCommands(s, literal_buf, num_literals, command_buf, num_commands,\n storage_ix, storage);\n } else {\n /* Since we did not find many backward references and the entropy of\n the data is close to 8 bits, we can simply emit an uncompressed block.\n This makes compression speed of uncompressible data about 3x faster. */\n EmitUncompressedMetaBlock(input, block_size, storage_ix, storage);\n }\n input += block_size;\n input_size -= block_size;\n }\n}\n\n#define FOR_TABLE_BITS_(X) \\\n X(8) X(9) X(10) X(11) X(12) X(13) X(14) X(15) X(16) X(17)\n\n#define BAKE_METHOD_PARAM_(B) \\\nstatic BROTLI_NOINLINE void BrotliCompressFragmentTwoPassImpl ## B( \\\n BrotliTwoPassArena* s, const uint8_t* input, size_t input_size, \\\n BROTLI_BOOL is_last, uint32_t* command_buf, uint8_t* literal_buf, \\\n int* table, size_t* storage_ix, uint8_t* storage) { \\\n size_t min_match = (B <= 15) ? 4 : 6; \\\n BrotliCompressFragmentTwoPassImpl(s, input, input_size, is_last, command_buf,\\\n literal_buf, table, B, min_match, storage_ix, storage); \\\n}\nFOR_TABLE_BITS_(BAKE_METHOD_PARAM_)\n#undef BAKE_METHOD_PARAM_\n\nvoid BrotliCompressFragmentTwoPass(\n BrotliTwoPassArena* s, const uint8_t* input, size_t input_size,\n BROTLI_BOOL is_last, uint32_t* command_buf, uint8_t* literal_buf,\n int* table, size_t table_size, size_t* storage_ix, uint8_t* storage) {\n const size_t initial_storage_ix = *storage_ix;\n const size_t table_bits = Log2FloorNonZero(table_size);\n switch (table_bits) {\n#define CASE_(B) \\\n case B: \\\n BrotliCompressFragmentTwoPassImpl ## B( \\\n s, input, input_size, is_last, command_buf, \\\n literal_buf, table, storage_ix, storage); \\\n break;\n FOR_TABLE_BITS_(CASE_)\n#undef CASE_\n default: BROTLI_DCHECK(0); break;\n }\n\n /* If output is larger than single uncompressed block, rewrite it. */\n if (*storage_ix - initial_storage_ix > 31 + (input_size << 3)) {\n RewindBitPosition(initial_storage_ix, storage_ix, storage);\n EmitUncompressedMetaBlock(input, input_size, storage_ix, storage);\n }\n\n if (is_last) {\n BrotliWriteBits(1, 1, storage_ix, storage); /* islast */\n BrotliWriteBits(1, 1, storage_ix, storage); /* isempty */\n *storage_ix = (*storage_ix + 7u) & ~7u;\n }\n}\n\n#undef FOR_TABLE_BITS_\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/compress_fragment_two_pass.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function for fast encoding of an input fragment, independently from the input\n history. This function uses two-pass processing: in the first pass we save\n the found backward matches and literal bytes into a buffer, and in the\n second pass we emit them into the bit stream using prefix codes built based\n on the actual command and literal byte histograms. */\n\n#ifndef BROTLI_ENC_COMPRESS_FRAGMENT_TWO_PASS_H_\n#define BROTLI_ENC_COMPRESS_FRAGMENT_TWO_PASS_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"entropy_encode.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* TODO(eustas): turn to macro. */\nstatic const size_t kCompressFragmentTwoPassBlockSize = 1 << 17;\n\ntypedef struct BrotliTwoPassArena {\n uint32_t lit_histo[256];\n uint8_t lit_depth[256];\n uint16_t lit_bits[256];\n\n uint32_t cmd_histo[128];\n uint8_t cmd_depth[128];\n uint16_t cmd_bits[128];\n\n /* BuildAndStoreCommandPrefixCode */\n HuffmanTree tmp_tree[2 * BROTLI_NUM_LITERAL_SYMBOLS + 1];\n uint8_t tmp_depth[BROTLI_NUM_COMMAND_SYMBOLS];\n uint16_t tmp_bits[64];\n} BrotliTwoPassArena;\n\n/* Compresses \"input\" string to the \"*storage\" buffer as one or more complete\n meta-blocks, and updates the \"*storage_ix\" bit position.\n\n If \"is_last\" is 1, emits an additional empty last meta-block.\n\n REQUIRES: \"input_size\" is greater than zero, or \"is_last\" is 1.\n REQUIRES: \"input_size\" is less or equal to maximal metablock size (1 << 24).\n REQUIRES: \"command_buf\" and \"literal_buf\" point to at least\n kCompressFragmentTwoPassBlockSize long arrays.\n REQUIRES: All elements in \"table[0..table_size-1]\" are initialized to zero.\n REQUIRES: \"table_size\" is a power of two\n OUTPUT: maximal copy distance <= |input_size|\n OUTPUT: maximal copy distance <= BROTLI_MAX_BACKWARD_LIMIT(18) */\nBROTLI_INTERNAL void BrotliCompressFragmentTwoPass(BrotliTwoPassArena* s,\n const uint8_t* input,\n size_t input_size,\n BROTLI_BOOL is_last,\n uint32_t* command_buf,\n uint8_t* literal_buf,\n int* table,\n size_t table_size,\n size_t* storage_ix,\n uint8_t* storage);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_COMPRESS_FRAGMENT_TWO_PASS_H_ */\n" }, { "path": "c/enc/dictionary_hash.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Hash table on the 4-byte prefixes of static dictionary words. */\n\n#include \"dictionary_hash.h\"\n\n#include \"../common/platform.h\" /* IWYU pragma: keep */\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/dictionary.h\"\n#include \"hash_base.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\nBROTLI_BOOL BROTLI_COLD BrotliEncoderInitDictionaryHash(\n const BrotliDictionary* dict, uint16_t* words, uint8_t* lengths) {\n size_t global_idx = 0;\n size_t len;\n size_t i;\n static const uint8_t frozen_idx[1688] = {0, 0, 8, 164, 32, 56, 31, 191, 36, 4,\n128, 81, 68, 132, 145, 129, 0, 0, 0, 28, 0, 8, 1, 1, 64, 3, 1, 0, 0, 0, 0, 0, 4,\n64, 1, 2, 128, 0, 132, 49, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 0, 1, 0, 36, 152,\n0, 0, 0, 0, 128, 8, 0, 0, 128, 0, 0, 8, 0, 0, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8,\n0, 0, 0, 1, 0, 64, 133, 0, 32, 0, 0, 128, 1, 0, 0, 0, 0, 4, 4, 4, 32, 16, 130,\n0, 128, 8, 0, 0, 0, 0, 0, 64, 0, 64, 0, 160, 0, 148, 53, 0, 0, 0, 0, 0, 128, 0,\n130, 0, 0, 0, 8, 0, 0, 0, 0, 0, 48, 0, 0, 0, 0, 0, 0, 32, 1, 32, 129, 0, 12, 0,\n1, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 16, 32, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 8,\n0, 0, 2, 0, 0, 0, 0, 0, 32, 0, 0, 0, 2, 66, 128, 0, 0, 16, 0, 0, 0, 0, 64, 1, 6,\n128, 8, 0, 192, 24, 32, 0, 0, 8, 4, 128, 128, 2, 160, 0, 160, 0, 64, 0, 0, 2, 0,\n0, 0, 0, 0, 0, 0, 0, 0, 32, 1, 0, 0, 64, 0, 0, 0, 0, 0, 0, 32, 0, 66, 0, 2, 0,\n4, 0, 8, 0, 2, 0, 0, 33, 8, 0, 0, 0, 8, 0, 128, 162, 4, 128, 0, 2, 33, 0, 160,\n0, 8, 0, 64, 0, 160, 0, 129, 4, 0, 0, 32, 0, 0, 32, 0, 2, 0, 0, 0, 0, 0, 0, 128,\n0, 0, 0, 0, 0, 64, 10, 0, 0, 0, 0, 32, 64, 0, 0, 0, 0, 0, 16, 0, 16, 16, 0, 0,\n80, 2, 0, 0, 0, 0, 8, 0, 0, 16, 0, 8, 0, 0, 0, 8, 64, 128, 0, 0, 0, 8, 208, 0,\n0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 32, 0, 8, 0, 128, 0, 0, 0, 1, 0, 0, 0,\n16, 8, 1, 136, 0, 0, 36, 0, 64, 9, 0, 1, 32, 8, 0, 64, 64, 131, 16, 224, 32, 4,\n0, 4, 5, 160, 0, 131, 0, 4, 96, 0, 0, 184, 192, 0, 177, 205, 96, 0, 0, 0, 0, 2,\n0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 0, 128, 0, 0, 8, 0, 0, 0, 0, 1, 4, 0, 1,\n0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 4, 0, 0, 64, 69, 0, 0, 8, 2, 66, 32, 64, 0, 0, 0,\n0, 0, 1, 0, 128, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 16, 0, 0, 4, 128, 64,\n0, 0, 0, 0, 0, 0, 0, 0, 224, 0, 8, 0, 0, 130, 16, 64, 128, 2, 64, 0, 0, 0, 128,\n2, 192, 64, 0, 65, 0, 0, 0, 16, 0, 0, 0, 32, 4, 2, 2, 76, 0, 0, 0, 4, 72, 52,\n131, 44, 76, 0, 0, 0, 0, 64, 1, 16, 148, 4, 0, 16, 10, 64, 0, 2, 0, 1, 0, 128,\n64, 68, 0, 0, 0, 0, 0, 64, 144, 0, 8, 0, 2, 0, 0, 0, 0, 0, 0, 3, 64, 0, 0, 0, 0,\n1, 128, 0, 0, 32, 66, 0, 0, 0, 40, 0, 18, 0, 0, 0, 0, 0, 33, 0, 0, 32, 0, 0, 32,\n0, 128, 4, 64, 145, 140, 0, 0, 0, 128, 0, 2, 0, 0, 20, 0, 80, 38, 0, 0, 32, 0,\n32, 64, 4, 4, 0, 4, 0, 0, 0, 129, 4, 0, 0, 144, 17, 32, 130, 16, 132, 24, 134,\n0, 0, 64, 2, 5, 50, 8, 194, 33, 1, 68, 117, 1, 8, 32, 161, 54, 0, 130, 34, 0, 0,\n0, 64, 128, 0, 0, 2, 0, 0, 0, 0, 32, 1, 0, 0, 0, 3, 14, 0, 0, 0, 0, 0, 16, 4, 0,\n0, 0, 0, 0, 0, 0, 0, 96, 1, 24, 18, 0, 1, 128, 24, 0, 64, 0, 4, 0, 16, 128, 0,\n64, 0, 0, 0, 64, 0, 8, 0, 0, 0, 0, 0, 66, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n0, 0, 0, 0, 16, 0, 64, 2, 0, 0, 0, 0, 6, 0, 8, 8, 2, 0, 64, 0, 0, 0, 0, 128, 2,\n2, 12, 64, 0, 64, 0, 8, 0, 128, 32, 0, 0, 10, 0, 0, 32, 0, 128, 32, 33, 8, 136,\n0, 96, 64, 0, 0, 0, 0, 0, 64, 4, 16, 4, 8, 0, 0, 0, 16, 0, 2, 0, 0, 1, 128, 0,\n64, 16, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 2, 0, 16, 0, 4, 0, 8, 0, 0, 0, 0, 0,\n20, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 136, 0, 0, 0, 0, 0, 8, 0,\n0, 0, 0, 0, 2, 0, 0, 0, 64, 0, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0,\n0, 0, 4, 0, 0, 0, 0, 65, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0,\n0, 0, 0, 0, 2, 128, 0, 0, 0, 8, 2, 0, 0, 128, 0, 16, 2, 0, 0, 4, 0, 32, 0, 0, 1,\n4, 64, 64, 0, 4, 0, 1, 0, 16, 0, 32, 68, 4, 4, 65, 10, 0, 20, 37, 18, 1, 148, 0,\n32, 128, 3, 8, 0, 64, 0, 0, 0, 0, 0, 0, 4, 0, 16, 1, 128, 0, 0, 0, 128, 16, 0,\n0, 0, 0, 1, 128, 0, 0, 128, 64, 128, 64, 0, 130, 0, 164, 8, 0, 0, 1, 64, 128, 0,\n18, 0, 2, 150, 0, 8, 0, 0, 64, 0, 81, 0, 0, 16, 128, 2, 8, 36, 32, 129, 4, 144,\n13, 0, 0, 3, 8, 1, 0, 2, 0, 0, 64, 0, 5, 0, 1, 34, 1, 32, 2, 16, 128, 128, 128,\n0, 0, 0, 2, 0, 4, 18, 8, 12, 34, 32, 192, 6, 64, 224, 33, 0, 0, 137, 72, 64, 0,\n24, 8, 128, 128, 0, 16, 0, 32, 128, 128, 132, 8, 0, 0, 16, 0, 64, 0, 0, 4, 0, 0,\n16, 0, 4, 128, 64, 0, 0, 1, 0, 4, 64, 32, 144, 130, 2, 128, 0, 192, 0, 64, 82,\n64, 1, 32, 128, 128, 2, 0, 84, 0, 32, 0, 44, 24, 72, 80, 32, 16, 0, 0, 44, 16,\n96, 64, 1, 72, 131, 0, 0, 0, 16, 0, 0, 165, 0, 129, 2, 49, 48, 64, 64, 12, 64,\n176, 64, 84, 8, 128, 20, 64, 213, 136, 104, 1, 41, 15, 83, 170, 0, 0, 41, 1, 64,\n64, 0, 193, 64, 64, 8, 0, 128, 0, 0, 64, 8, 64, 8, 1, 16, 0, 8, 0, 0, 2, 1, 128,\n28, 84, 141, 97, 0, 0, 68, 0, 0, 129, 8, 0, 16, 8, 32, 0, 64, 0, 0, 0, 24, 0, 0,\n0, 192, 0, 8, 128, 0, 0, 0, 0, 0, 64, 0, 1, 0, 0, 0, 0, 40, 1, 128, 64, 0, 4, 2,\n32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 32, 8, 0, 32, 0, 0, 0, 16, 17, 0,\n2, 4, 0, 0, 33, 128, 2, 0, 0, 0, 0, 129, 0, 2, 0, 0, 0, 36, 0, 32, 2, 0, 0, 0,\n0, 0, 0, 32, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 4, 32, 64, 0, 0, 0, 0, 0, 0,\n32, 0, 0, 32, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 16, 0, 0, 0, 0, 0, 0, 0,\n1, 0, 136, 0, 0, 24, 192, 128, 3, 0, 17, 18, 2, 0, 66, 0, 4, 24, 0, 9, 208, 167,\n0, 144, 20, 64, 0, 130, 64, 0, 2, 16, 136, 8, 74, 32, 0, 168, 0, 65, 32, 8, 12,\n1, 3, 1, 64, 180, 3, 0, 64, 0, 8, 0, 0, 32, 65, 0, 4, 16, 4, 16, 68, 32, 64, 36,\n32, 24, 33, 1, 128, 0, 0, 8, 0, 32, 64, 81, 0, 1, 10, 19, 8, 0, 0, 4, 5, 144, 0,\n0, 8, 128, 0, 0, 4, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 8, 0, 0, 0, 0, 0, 80, 1, 0, 0,\n33, 0, 32, 66, 4, 2, 0, 1, 43, 2, 0, 0, 4, 32, 16, 0, 64, 0, 3, 32, 0, 2, 64,\n64, 116, 0, 65, 52, 64, 0, 17, 64, 192, 96, 8, 10, 8, 2, 4, 0, 17, 64, 0, 4, 0,\n0, 4, 128, 0, 0, 9, 0, 0, 130, 2, 0, 192, 0, 48, 128, 64, 0, 96, 0, 64, 0, 1,\n16, 32, 0, 1, 32, 6, 128, 2, 32, 0, 12, 0, 0, 48, 32, 8, 0, 0, 128, 0, 18, 0,\n0, 28, 24, 41, 16, 5, 32, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n0, 0, 0, 0, 1, 0, 0, 0, 16, 0, 0, 0, 0, 64, 0, 0, 0, 0, 8, 0, 0, 0, 0, 16, 128,\n0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0,\n0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n0, 0, 0, 0, 0, 0, 0};\n\n memset(lengths, 0, BROTLI_ENC_NUM_HASH_BUCKETS);\n\n for (len = BROTLI_MAX_DICTIONARY_WORD_LENGTH;\n len >= BROTLI_MIN_DICTIONARY_WORD_LENGTH; --len) {\n size_t length_lt_8 = len < 8 ? 1 : 0;\n size_t n = 1u << dict->size_bits_by_length[len];\n const uint8_t* dict_words = dict->data + dict->offsets_by_length[len];\n for (i = 0; i < n; ++i) {\n size_t j = n - 1 - i;\n const uint8_t* word = dict_words + len * j;\n const uint32_t key = Hash14(word);\n size_t idx = (key << 1) + length_lt_8;\n if ((lengths[idx] & 0x80) == 0) {\n BROTLI_BOOL is_final = TO_BROTLI_BOOL(frozen_idx[global_idx / 8] &\n (1u << (global_idx % 8)));\n words[idx] = (uint16_t)j;\n lengths[idx] = (uint8_t)(len + (is_final ? 0x80 : 0));\n }\n global_idx++;\n }\n }\n for (i = 0; i < BROTLI_ENC_NUM_HASH_BUCKETS; ++i) {\n lengths[i] &= 0x7F;\n }\n\n return BROTLI_TRUE;\n}\n\nBROTLI_MODEL(\"small\")\nuint16_t kStaticDictionaryHashWords[BROTLI_ENC_NUM_HASH_BUCKETS];\nBROTLI_MODEL(\"small\")\nuint8_t kStaticDictionaryHashLengths[BROTLI_ENC_NUM_HASH_BUCKETS];\n\n#else /* BROTLI_STATIC_INIT */\n\n/* Embed kStaticDictionaryHashWords and kStaticDictionaryHashLengths. */\n#include \"dictionary_hash_inc.h\"\n\n#endif /* BROTLI_STATIC_INIT */\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/dictionary_hash.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Hash table on the 4-byte prefixes of static dictionary words. */\n\n#ifndef BROTLI_ENC_DICTIONARY_HASH_H_\n#define BROTLI_ENC_DICTIONARY_HASH_H_\n\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/dictionary.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Bucket is (Hash14 * 2 + length_lt_8); in other words we reserve 2 buckets\n for each hash - one for shorter words and one for longer words. */\n#define BROTLI_ENC_NUM_HASH_BUCKETS 32768\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\nBROTLI_BOOL BROTLI_INTERNAL BrotliEncoderInitDictionaryHash(\n const BrotliDictionary* dictionary, uint16_t* words, uint8_t* lengths);\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\") uint16_t\n kStaticDictionaryHashWords[BROTLI_ENC_NUM_HASH_BUCKETS];\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\") uint8_t\n kStaticDictionaryHashLengths[BROTLI_ENC_NUM_HASH_BUCKETS];\n#else\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\") uint16_t\n kStaticDictionaryHashWords[BROTLI_ENC_NUM_HASH_BUCKETS];\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\") uint8_t\n kStaticDictionaryHashLengths[BROTLI_ENC_NUM_HASH_BUCKETS];\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_DICTIONARY_HASH_H_ */\n" }, { "path": "c/enc/dictionary_hash_inc.h", "content": "const BROTLI_MODEL(\"small\")\nuint16_t kStaticDictionaryHashWords[BROTLI_ENC_NUM_HASH_BUCKETS] = 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,0,0,0,0,0,1423,0,0,0,0,0,0,0,0,0,\n749,0,0,0,0,546,645,0,0,0,0,0,0,277,0,0,1275,0,0,0,0,0,0,0,453,536,555,0,0,987,\n1107,0,0,90,0,0,0,0,0,0,0,0,860,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n257,0,1768,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1071,0,0,0,0,0,0,0,0,0,0,0,0,0,83,\n0,835,0,0,0,0,0,0,0,2006,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,696,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,95,1718,0,0,0,0,0,0,0,26,0,550,0,0,0,0,0,901,0,0,0,0,0,\n0,822,0,0,122,0,0,0,807,0,0,0,0,0,262,0,620,601,34,0,0,170,0,0,0,0,537,0,0,0,0,\n0,0,0,0,0,332,0,0,208,1909,182,261,0,0,0,1721,0,0,0,0,0,933,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,1609,0,895,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,812,0,0,942,1916,0,0,0,0,\n0,0,0,778,0,0,0,137,0,1314,0,0,0,0,0,0,0,1661,0,0,0,0,0,0,0,1591,0,0,0,0,0,0,\n820,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,185,89,0,1160,230,6,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,63,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1740,0,0,177,\n170,0,1961,0,0,0,0,0,0,0,0,0,0,0,0,91,0,17,44,0,0,0,0,0,0,0,0,0,270,0,296,0,0,0,\n0,0,0,0,1523,0,0,0,0,0,0,0,0,0,0,757,7,0,0,0,0,0,0,0,0,0,0,530,588,0,0,0,0,0,0,\n0,0,0,786,0,0,0,0,0,580,627,88,447,57,0,0,0,0,0,0,0,0,845,735,0,0,0,0,0,31,15,0,\n460,521,12,424,0,0,0,1302,0,0,0,0,0,0,0,595,0,0,0,13,548,97,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,1472,452,1767,0,0,0,0,0,0,0,0,0,0,115,0,0,0,0,0,0,1543,0,1111,0,0,0,0,\n1,0,359,488,0,267,0,0,0,1983,0,0,0,0,0,0,0,1155,0,1575,0,1438,31,0,0,377,101,0,\n0,0,0,0,0,0,0,0,0,0,0,0,476,0,0,0,0,0,0,0,0,2023,0,0,0,0,0,1836,0,0,0,0,35,843,\n0,0,0,0,0,0,0,554,0,0,0,536,625,207,0,1371,0,0,0,424,785,336,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,896,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,27,750,0,0,0,0,238,0,0,\n0,0,0,383,0,0,0,0,0,0,0,0,603,725,11,0,0,0,0,0,0,0,0,0,476,0,0,0,0,0,1552,0,0,0,\n0,0,0,0,680,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,435,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n1431,0,0,13,112,0,0,356,0,0,0,0,0,0,0,0,0,0,1963,0,0,0,1244,18,0,0,0,0,0,0,867,\n0,0,0,0,0,0,50,708,73,592,0,502,0,0,0,0,0,0,161,347,0,0,0,0,470,33,0,246,571,10,\n0,465,614,0,237,0,0,0,0,0,24,18,0,506,0,0,0,0,0,0,33,309,0,0,0,0,0,0,0,0,0,0,\n140,0,0,0,0,1056,0,0,0,1704,0,0,0,0,0,0,0,1036,0,0,0,0,0,0,0,0,0,1315,432,86,\n264,524,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,107,0,0,0,0,0,123,927,0,0,957,1149,0,0,\n0,0,0,778,0,502,196,0,0,0,0,1312,0,0,0,0,0,0,0,855,0,0,0,0,0,0,0,0,0,0,45,1400,\n0,0,0,1003,0,0,0,0,0,1097,0,0,0,0,0,0,0,0,545,612,0,0,0,0,0,0,0,0,0,0,0,0,54,0,\n0,0,0,172,0,0,0,1029,0,0,0,0,0,0,0,0,0,568,0,0,0,732,617,0,0,974,94,989,733,0,0,\n0,0,0,0,1789,0,0,665,2015,0,0,0,0,0,0,806,287,0,0,0,0,0,1539,0,0,0,0,0,0,0,0,0,\n0,182,1563,0,0,0,0,0,0,0,0,0,484,0,0,0,0,0,1623,0,0,0,0,0,0,0,0,878,1833,0,1569,\n0,0,0,0,0,0,0,0,93,0,715,994,0,0,0,0,0,63,0,591,0,0,0,0,0,0,0,749,0,0,0,0,547,\n366,0,0,0,1747,0,0,0,0,0,0,0,89,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1463,0,772,\n893,0,0,0,48,0,0,941,0,0,690,1785,106,440,0,0,0,0,0,0,0,0,0,0,32,0,332,216,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,852,0,\n0,416,564,0,918,0,1764,0,0,3,0,0,274,0,0,0,0,501,0,0,0,0,0,0,0,851,743,0,49,0,\n879,0,0,47,0,0,0,0,0,0,865,0,1202,0,0,0,0,0,0,47,272,0,0,0,0,0,0,0,0,0,0,0,1455,\n0,0,0,0,891,1911,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,761,0,0,0,0,0,0,0,0,0,407,0,\n183,0,0,490,0,0,0,0,0,0,0,35,731,0,0,0,0,0,0,0,819,0,0,0,0,0,0,0,0,0,0,0,0,0,\n575,0,0,0,0,45,818,0,0,77,222,0,0,0,0,849,1880,0,0,0,633,0,1308,0,0,0,0,0,0,0,0,\n0,0,86,0,0,0,0,0,0,0,0,0,0,0,0,0,0,817,0,0,0,0,0,0,0,0,0,882,0,0,0,914,0,0,0,0,\n0,0,0,0,0,0,865,0,0,426,399,58,0,0,0,0,0,0,538,102,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,876,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,139,566,0,63,12,0,0,0,\n0,0,0,0,0,0,0,0,0,0,3,114,0,0,0,0,0,0,0,0,576,0,0,0,0,0,0,0,0,933,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,692,0,0,0,0,0,0,0,0,0,0,0,0,752,0,0,0,0,\n0,0,0,0,375,0,1011,0,0,96,0,0,0,0,0,0,0,0,0,148,0,0,0,0,0,0,0,0,0,0,0,337,56,\n666,0,246,394,0,0,0,0,0,0,0,0,437,0,0,0,506,0,0,0,0,1003,0,1163,0,328,0,0,0,0,0,\n0,0,0,1000,0,0,0,0,0,744,101,0,0,0,0,0,726,0,0,176,0,146,9,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,839,0,0,0,0,0,0,223,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,246,1931,29,0,0,1771,0,0,0,0,0,846,6,157,0,0,0,0,0,0,0,0,0,875,0,0,477,\n773,177,639,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1747,0,0,0,0,158,873,0,659,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,0,0,391,0,0,0,0,0,0,0,0,0,0,0,0,668,883,0,78,628,0,0,0,\n0,0,0,0,0,0,0,0,0,1460,0,962,0,0,0,0,0,460,0,0,0,0,0,0,0,0,0,0,0,0,0,0,34,199,0,\n0,0,388,474,0,271,0,333,608,0,0,0,0,0,0,49,0,988,0,707,617,0,0,0,0,0,0,0,756,0,\n0,0,0,0,1583,0,0,0,0,0,0,0,0,0,0,285,0,0,0,0,0,0,0,0,0,0,0,0,0,0,344,0,0,0,0,0,\n0,0,0,515,1709,0,0,0,0,0,0,0,0,404,0,0,0,0,500,0,0,0,0,0,0,0,0,0,68,216,0,0,0,0,\n0,0,0,488,353,0,0,177,236,0,0,458,490,0,0,0,0,0,0,756,1504,0,757,0,1735,0,0,108,\n598,0,0,0,0};\nconst BROTLI_MODEL(\"small\")\nuint8_t kStaticDictionaryHashLengths[BROTLI_ENC_NUM_HASH_BUCKETS] = 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0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,6,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,9,6,0,0,0,0,0,0,0,7,0,0,0,4,0,\n6,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,6,0,0,0,0,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,9,5,0,6,12,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,6,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,8,7,0,6,0,0,0,0,0,0,0,0,0,0,0,0,11,0,12,7,0,0,0,0,\n0,0,0,0,0,5,0,5,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,11,4,0,0,0,0,0,0,0,0,0,0,10,\n7,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,7,8,7,9,6,0,0,0,0,0,0,0,0,8,6,0,0,0,0,0,5,12,0,\n10,5,12,6,0,0,0,7,0,0,0,0,0,0,0,5,0,0,0,5,9,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,\n11,7,0,0,0,0,0,0,0,0,0,0,17,0,0,0,0,0,0,6,0,7,0,0,0,0,8,0,8,5,0,6,0,0,0,6,0,0,0,\n0,0,0,0,6,0,6,0,6,9,0,0,5,17,0,0,0,0,0,0,0,0,0,0,0,0,0,9,0,0,0,0,0,0,0,0,7,0,0,\n0,0,0,7,0,0,0,0,16,5,0,0,0,0,0,0,0,4,0,0,0,5,11,5,0,7,0,0,0,4,8,7,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,7,0,0,0,0,12,0,0,0,\n0,0,12,0,0,0,0,0,0,0,0,4,10,4,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,6,0,0,0,0,0,0,0,4,0,\n0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0,20,5,0,0,\n10,0,0,0,0,0,0,0,0,0,0,6,0,0,0,6,12,0,0,0,0,0,0,6,0,0,0,0,0,0,9,4,10,7,0,4,0,0,\n0,0,0,0,10,6,0,0,0,0,8,4,0,7,8,6,0,6,8,0,10,0,0,0,0,0,13,5,0,6,0,0,0,0,0,0,22,4,\n0,0,0,0,0,0,0,0,0,0,9,0,0,0,0,6,0,0,0,6,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,6,10,\n5,8,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,10,4,0,0,10,7,0,0,0,0,0,5,0,\n5,8,0,0,0,0,6,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,10,7,0,0,0,4,0,0,0,0,0,6,0,0,\n0,0,0,0,0,0,8,7,0,0,0,0,0,0,0,0,0,0,0,0,11,0,0,0,0,7,0,0,0,6,0,0,0,0,0,0,0,0,0,\n4,0,0,0,4,10,0,0,6,13,7,8,0,0,0,0,0,0,7,0,0,12,7,0,0,0,0,0,0,10,5,0,0,0,0,0,6,0,\n0,0,0,0,0,0,0,0,0,13,7,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,6,0,0,0,0,0,0,0,0,8,6,0,6,\n0,0,0,0,0,0,0,0,12,0,8,4,0,0,0,0,0,4,0,4,0,0,0,0,0,0,0,5,0,0,0,0,12,5,0,0,0,7,0,\n0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,0,6,10,0,0,0,20,0,0,5,0,0,10,\n7,11,7,0,0,0,0,0,0,0,0,0,0,17,0,9,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,10,7,0,4,0,6,0,0,24,0,0,5,0,0,0,0,8,0,0,\n0,0,0,0,0,10,5,0,4,0,6,0,0,8,0,0,0,0,0,0,4,0,6,0,0,0,0,0,0,9,5,0,0,0,0,0,0,0,0,\n0,0,0,6,0,0,0,0,9,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,4,0,7,\n0,0,13,0,0,0,0,0,0,0,11,6,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,\n17,7,0,0,11,6,0,0,0,0,12,6,0,0,0,6,0,6,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,5,0,0,0,6,0,0,0,0,0,0,0,0,0,0,10,0,0,4,8,6,0,0,0,\n0,0,0,9,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,9,5,0,7,18,0,0,0,0,0,0,0,0,0,0,0,0,0,8,6,0,0,0,0,0,0,0,0,8,0,0,0,\n0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,\n0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,4,0,6,0,0,9,0,0,0,0,0,0,0,0,0,13,0,0,0,0,0,0,0,0,\n0,0,0,8,7,10,0,8,5,0,0,0,0,0,0,0,0,9,0,0,0,10,0,0,0,0,6,0,7,0,4,0,0,0,0,0,0,0,0,\n8,0,0,0,0,0,8,4,0,0,0,0,0,5,0,0,10,0,12,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n4,0,0,0,0,0,0,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,6,11,0,0,\n7,0,0,0,0,0,6,10,5,0,0,0,0,0,0,0,0,0,5,0,0,9,5,12,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,\n0,6,0,0,0,0,13,6,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,\n0,0,0,8,4,0,6,12,0,0,0,0,0,0,0,0,0,0,0,0,6,0,6,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,\n0,0,0,0,11,4,0,0,0,6,14,0,11,0,9,6,0,0,0,0,0,0,22,0,12,0,8,6,0,0,0,0,0,0,0,6,0,\n0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,\n10,7,0,0,0,0,0,0,0,0,9,0,0,0,0,4,0,0,0,0,0,0,0,0,0,5,11,0,0,0,0,0,0,0,8,6,0,0,9,\n7,0,0,12,4,0,0,0,0,0,0,12,6,0,6,0,7,0,0,8,5,0,0,0,0};\n" }, { "path": "c/enc/encode.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Implementation of Brotli compressor. */\n\n#include \n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \n#include \"../common/version.h\"\n#include \"backward_references_hq.h\"\n#include \"backward_references.h\"\n#include \"bit_cost.h\"\n#include \"brotli_bit_stream.h\"\n#include \"command.h\"\n#include \"compound_dictionary.h\"\n#include \"compress_fragment_two_pass.h\"\n#include \"compress_fragment.h\"\n#include \"dictionary_hash.h\"\n#include \"encoder_dict.h\"\n#include \"fast_log.h\"\n#include \"hash.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n#include \"metablock.h\"\n#include \"params.h\"\n#include \"quality.h\"\n#include \"ringbuffer.h\"\n#include \"state.h\"\n#include \"static_init.h\"\n#include \"utf8_util.h\"\n#include \"write_bits.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define COPY_ARRAY(dst, src) memcpy(dst, src, sizeof(src));\n\nstatic size_t InputBlockSize(BrotliEncoderState* s) {\n return (size_t)1 << s->params.lgblock;\n}\n\nstatic uint64_t UnprocessedInputSize(BrotliEncoderState* s) {\n return s->input_pos_ - s->last_processed_pos_;\n}\n\nstatic size_t RemainingInputBlockSize(BrotliEncoderState* s) {\n const uint64_t delta = UnprocessedInputSize(s);\n size_t block_size = InputBlockSize(s);\n if (delta >= block_size) return 0;\n return block_size - (size_t)delta;\n}\n\nBROTLI_BOOL BrotliEncoderSetParameter(\n BrotliEncoderState* state, BrotliEncoderParameter p, uint32_t value) {\n /* Changing parameters on the fly is not implemented yet. */\n if (state->is_initialized_) return BROTLI_FALSE;\n /* TODO(eustas): Validate/clamp parameters here. */\n switch (p) {\n case BROTLI_PARAM_MODE:\n state->params.mode = (BrotliEncoderMode)value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_QUALITY:\n state->params.quality = (int)value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_LGWIN:\n state->params.lgwin = (int)value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_LGBLOCK:\n state->params.lgblock = (int)value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING:\n if ((value != 0) && (value != 1)) return BROTLI_FALSE;\n state->params.disable_literal_context_modeling = TO_BROTLI_BOOL(!!value);\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_SIZE_HINT:\n state->params.size_hint = value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_LARGE_WINDOW:\n state->params.large_window = TO_BROTLI_BOOL(!!value);\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_NPOSTFIX:\n state->params.dist.distance_postfix_bits = value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_NDIRECT:\n state->params.dist.num_direct_distance_codes = value;\n return BROTLI_TRUE;\n\n case BROTLI_PARAM_STREAM_OFFSET:\n if (value > (1u << 30)) return BROTLI_FALSE;\n state->params.stream_offset = value;\n return BROTLI_TRUE;\n\n default: return BROTLI_FALSE;\n }\n}\n\n/* Wraps 64-bit input position to 32-bit ring-buffer position preserving\n \"not-a-first-lap\" feature. */\nstatic uint32_t WrapPosition(uint64_t position) {\n uint32_t result = (uint32_t)position;\n uint64_t gb = position >> 30;\n if (gb > 2) {\n /* Wrap every 2GiB; The first 3GB are continuous. */\n result = (result & ((1u << 30) - 1)) | ((uint32_t)((gb - 1) & 1) + 1) << 30;\n }\n return result;\n}\n\nstatic uint8_t* GetBrotliStorage(BrotliEncoderState* s, size_t size) {\n MemoryManager* m = &s->memory_manager_;\n if (s->storage_size_ < size) {\n BROTLI_FREE(m, s->storage_);\n s->storage_ = BROTLI_ALLOC(m, uint8_t, size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(s->storage_)) return NULL;\n s->storage_size_ = size;\n }\n return s->storage_;\n}\n\nstatic size_t HashTableSize(size_t max_table_size, size_t input_size) {\n size_t htsize = 256;\n while (htsize < max_table_size && htsize < input_size) {\n htsize <<= 1;\n }\n return htsize;\n}\n\nstatic int* GetHashTable(BrotliEncoderState* s, int quality,\n size_t input_size, size_t* table_size) {\n /* Use smaller hash table when input.size() is smaller, since we\n fill the table, incurring O(hash table size) overhead for\n compression, and if the input is short, we won't need that\n many hash table entries anyway. */\n MemoryManager* m = &s->memory_manager_;\n const size_t max_table_size = MaxHashTableSize(quality);\n size_t htsize = HashTableSize(max_table_size, input_size);\n int* table;\n BROTLI_DCHECK(max_table_size >= 256);\n if (quality == FAST_ONE_PASS_COMPRESSION_QUALITY) {\n /* Only odd shifts are supported by fast-one-pass. */\n if ((htsize & 0xAAAAA) == 0) {\n htsize <<= 1;\n }\n }\n\n if (htsize <= sizeof(s->small_table_) / sizeof(s->small_table_[0])) {\n table = s->small_table_;\n } else {\n if (htsize > s->large_table_size_) {\n s->large_table_size_ = htsize;\n BROTLI_FREE(m, s->large_table_);\n s->large_table_ = BROTLI_ALLOC(m, int, htsize);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(s->large_table_)) return 0;\n }\n table = s->large_table_;\n }\n\n *table_size = htsize;\n memset(table, 0, htsize * sizeof(*table));\n return table;\n}\n\nstatic void EncodeWindowBits(int lgwin, BROTLI_BOOL large_window,\n uint16_t* last_bytes, uint8_t* last_bytes_bits) {\n if (large_window) {\n *last_bytes = (uint16_t)(((lgwin & 0x3F) << 8) | 0x11);\n *last_bytes_bits = 14;\n } else {\n if (lgwin == 16) {\n *last_bytes = 0;\n *last_bytes_bits = 1;\n } else if (lgwin == 17) {\n *last_bytes = 1;\n *last_bytes_bits = 7;\n } else if (lgwin > 17) {\n *last_bytes = (uint16_t)(((lgwin - 17) << 1) | 0x01);\n *last_bytes_bits = 4;\n } else {\n *last_bytes = (uint16_t)(((lgwin - 8) << 4) | 0x01);\n *last_bytes_bits = 7;\n }\n }\n}\n\n/* TODO(eustas): move to compress_fragment.c? */\n/* Initializes the command and distance prefix codes for the first block. */\nstatic void InitCommandPrefixCodes(BrotliOnePassArena* s) {\n static const BROTLI_MODEL(\"small\") uint8_t kDefaultCommandDepths[128] = {\n 0, 4, 4, 5, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8,\n 0, 0, 0, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7,\n 7, 7, 10, 10, 10, 10, 10, 10, 0, 4, 4, 5, 5, 5, 6, 6,\n 7, 8, 8, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,\n 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4,\n 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 8, 10,\n 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,\n };\n static const BROTLI_MODEL(\"small\") uint16_t kDefaultCommandBits[128] = {\n 0, 0, 8, 9, 3, 35, 7, 71,\n 39, 103, 23, 47, 175, 111, 239, 31,\n 0, 0, 0, 4, 12, 2, 10, 6,\n 13, 29, 11, 43, 27, 59, 87, 55,\n 15, 79, 319, 831, 191, 703, 447, 959,\n 0, 14, 1, 25, 5, 21, 19, 51,\n 119, 159, 95, 223, 479, 991, 63, 575,\n 127, 639, 383, 895, 255, 767, 511, 1023,\n 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 27, 59, 7, 39, 23, 55, 30, 1, 17, 9, 25, 5, 0, 8, 4, 12,\n 2, 10, 6, 21, 13, 29, 3, 19, 11, 15, 47, 31, 95, 63, 127, 255,\n 767, 2815, 1791, 3839, 511, 2559, 1535, 3583, 1023, 3071, 2047, 4095,\n };\n static const BROTLI_MODEL(\"small\") uint8_t kDefaultCommandCode[] = {\n 0xff, 0x77, 0xd5, 0xbf, 0xe7, 0xde, 0xea, 0x9e, 0x51, 0x5d, 0xde, 0xc6,\n 0x70, 0x57, 0xbc, 0x58, 0x58, 0x58, 0xd8, 0xd8, 0x58, 0xd5, 0xcb, 0x8c,\n 0xea, 0xe0, 0xc3, 0x87, 0x1f, 0x83, 0xc1, 0x60, 0x1c, 0x67, 0xb2, 0xaa,\n 0x06, 0x83, 0xc1, 0x60, 0x30, 0x18, 0xcc, 0xa1, 0xce, 0x88, 0x54, 0x94,\n 0x46, 0xe1, 0xb0, 0xd0, 0x4e, 0xb2, 0xf7, 0x04, 0x00,\n };\n static const size_t kDefaultCommandCodeNumBits = 448;\n COPY_ARRAY(s->cmd_depth, kDefaultCommandDepths);\n COPY_ARRAY(s->cmd_bits, kDefaultCommandBits);\n\n /* Initialize the pre-compressed form of the command and distance prefix\n codes. */\n COPY_ARRAY(s->cmd_code, kDefaultCommandCode);\n s->cmd_code_numbits = kDefaultCommandCodeNumBits;\n}\n\n/* TODO(eustas): avoid FP calculations. */\nstatic double EstimateEntropy(const uint32_t* population, size_t size) {\n size_t total = 0;\n double result = 0;\n size_t i;\n for (i = 0; i < size; ++i) {\n uint32_t p = population[i];\n total += p;\n result += (double)p * FastLog2(p);\n }\n result = (double)total * FastLog2(total) - result;\n return result;\n}\n\n/* Decide about the context map based on the ability of the prediction\n ability of the previous byte UTF8-prefix on the next byte. The\n prediction ability is calculated as Shannon entropy. Here we need\n Shannon entropy instead of 'BrotliBitsEntropy' since the prefix will be\n encoded with the remaining 6 bits of the following byte, and\n BrotliBitsEntropy will assume that symbol to be stored alone using Huffman\n coding. */\nstatic void ChooseContextMap(int quality,\n uint32_t* bigram_histo,\n size_t* num_literal_contexts,\n const uint32_t** literal_context_map) {\n static const BROTLI_MODEL(\"small\")\n uint32_t kStaticContextMapContinuation[64] = {\n 1, 1, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n };\n static const BROTLI_MODEL(\"small\")\n uint32_t kStaticContextMapSimpleUTF8[64] = {\n 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n };\n\n uint32_t monogram_histo[3] = { 0 };\n uint32_t two_prefix_histo[6] = { 0 };\n size_t total;\n size_t i;\n double entropy[4];\n for (i = 0; i < 9; ++i) {\n monogram_histo[i % 3] += bigram_histo[i];\n two_prefix_histo[i % 6] += bigram_histo[i];\n }\n entropy[1] = EstimateEntropy(monogram_histo, 3);\n entropy[2] = (EstimateEntropy(two_prefix_histo, 3) +\n EstimateEntropy(two_prefix_histo + 3, 3));\n entropy[3] = 0;\n for (i = 0; i < 3; ++i) {\n entropy[3] += EstimateEntropy(bigram_histo + 3 * i, 3);\n }\n\n total = monogram_histo[0] + monogram_histo[1] + monogram_histo[2];\n BROTLI_DCHECK(total != 0);\n entropy[0] = 1.0 / (double)total;\n entropy[1] *= entropy[0];\n entropy[2] *= entropy[0];\n entropy[3] *= entropy[0];\n\n if (quality < MIN_QUALITY_FOR_HQ_CONTEXT_MODELING) {\n /* 3 context models is a bit slower, don't use it at lower qualities. */\n entropy[3] = entropy[1] * 10;\n }\n /* If expected savings by symbol are less than 0.2 bits, skip the\n context modeling -- in exchange for faster decoding speed. */\n if (entropy[1] - entropy[2] < 0.2 &&\n entropy[1] - entropy[3] < 0.2) {\n *num_literal_contexts = 1;\n } else if (entropy[2] - entropy[3] < 0.02) {\n *num_literal_contexts = 2;\n *literal_context_map = kStaticContextMapSimpleUTF8;\n } else {\n *num_literal_contexts = 3;\n *literal_context_map = kStaticContextMapContinuation;\n }\n}\n\n/* Decide if we want to use a more complex static context map containing 13\n context values, based on the entropy reduction of histograms over the\n first 5 bits of literals. */\nstatic BROTLI_BOOL ShouldUseComplexStaticContextMap(const uint8_t* input,\n size_t start_pos, size_t length, size_t mask, int quality, size_t size_hint,\n size_t* num_literal_contexts, const uint32_t** literal_context_map,\n uint32_t* arena) {\n static const BROTLI_MODEL(\"small\")\n uint32_t kStaticContextMapComplexUTF8[64] = {\n 11, 11, 12, 12, /* 0 special */\n 0, 0, 0, 0, /* 4 lf */\n 1, 1, 9, 9, /* 8 space */\n 2, 2, 2, 2, /* !, first after space/lf and after something else. */\n 1, 1, 1, 1, /* \" */\n 8, 3, 3, 3, /* % */\n 1, 1, 1, 1, /* ({[ */\n 2, 2, 2, 2, /* }]) */\n 8, 4, 4, 4, /* :; */\n 8, 7, 4, 4, /* . */\n 8, 0, 0, 0, /* > */\n 3, 3, 3, 3, /* [0..9] */\n 5, 5, 10, 5, /* [A-Z] */\n 5, 5, 10, 5,\n 6, 6, 6, 6, /* [a-z] */\n 6, 6, 6, 6,\n };\n BROTLI_UNUSED(quality);\n /* Try the more complex static context map only for long data. */\n if (size_hint < (1 << 20)) {\n return BROTLI_FALSE;\n } else {\n const size_t end_pos = start_pos + length;\n /* To make entropy calculations faster, we collect histograms\n over the 5 most significant bits of literals. One histogram\n without context and 13 additional histograms for each context value. */\n uint32_t* BROTLI_RESTRICT const combined_histo = arena;\n uint32_t* BROTLI_RESTRICT const context_histo = arena + 32;\n uint32_t total = 0;\n double entropy[3];\n size_t i;\n ContextLut utf8_lut = BROTLI_CONTEXT_LUT(CONTEXT_UTF8);\n memset(arena, 0, sizeof(arena[0]) * 32 * (BROTLI_MAX_STATIC_CONTEXTS + 1));\n for (; start_pos + 64 <= end_pos; start_pos += 4096) {\n const size_t stride_end_pos = start_pos + 64;\n uint8_t prev2 = input[start_pos & mask];\n uint8_t prev1 = input[(start_pos + 1) & mask];\n size_t pos;\n /* To make the analysis of the data faster we only examine 64 byte long\n strides at every 4kB intervals. */\n for (pos = start_pos + 2; pos < stride_end_pos; ++pos) {\n const uint8_t literal = input[pos & mask];\n const uint8_t context = (uint8_t)kStaticContextMapComplexUTF8[\n BROTLI_CONTEXT(prev1, prev2, utf8_lut)];\n ++total;\n ++combined_histo[literal >> 3];\n ++context_histo[(context << 5) + (literal >> 3)];\n prev2 = prev1;\n prev1 = literal;\n }\n }\n entropy[1] = EstimateEntropy(combined_histo, 32);\n entropy[2] = 0;\n for (i = 0; i < BROTLI_MAX_STATIC_CONTEXTS; ++i) {\n entropy[2] += EstimateEntropy(context_histo + (i << 5), 32);\n }\n entropy[0] = 1.0 / (double)total;\n entropy[1] *= entropy[0];\n entropy[2] *= entropy[0];\n /* The triggering heuristics below were tuned by compressing the individual\n files of the silesia corpus. If we skip this kind of context modeling\n for not very well compressible input (i.e. entropy using context modeling\n is 60% of maximal entropy) or if expected savings by symbol are less\n than 0.2 bits, then in every case when it triggers, the final compression\n ratio is improved. Note however that this heuristics might be too strict\n for some cases and could be tuned further. */\n if (entropy[2] > 3.0 || entropy[1] - entropy[2] < 0.2) {\n return BROTLI_FALSE;\n } else {\n *num_literal_contexts = BROTLI_MAX_STATIC_CONTEXTS;\n *literal_context_map = kStaticContextMapComplexUTF8;\n return BROTLI_TRUE;\n }\n }\n}\n\nstatic void DecideOverLiteralContextModeling(const uint8_t* input,\n size_t start_pos, size_t length, size_t mask, int quality, size_t size_hint,\n size_t* num_literal_contexts, const uint32_t** literal_context_map,\n uint32_t* arena) {\n if (quality < MIN_QUALITY_FOR_CONTEXT_MODELING || length < 64) {\n return;\n } else if (ShouldUseComplexStaticContextMap(\n input, start_pos, length, mask, quality, size_hint,\n num_literal_contexts, literal_context_map, arena)) {\n /* Context map was already set, nothing else to do. */\n } else {\n /* Gather bi-gram data of the UTF8 byte prefixes. To make the analysis of\n UTF8 data faster we only examine 64 byte long strides at every 4kB\n intervals. */\n const size_t end_pos = start_pos + length;\n uint32_t* BROTLI_RESTRICT const bigram_prefix_histo = arena;\n memset(bigram_prefix_histo, 0, sizeof(arena[0]) * 9);\n for (; start_pos + 64 <= end_pos; start_pos += 4096) {\n static const int lut[4] = { 0, 0, 1, 2 };\n const size_t stride_end_pos = start_pos + 64;\n int prev = lut[input[start_pos & mask] >> 6] * 3;\n size_t pos;\n for (pos = start_pos + 1; pos < stride_end_pos; ++pos) {\n const uint8_t literal = input[pos & mask];\n ++bigram_prefix_histo[prev + lut[literal >> 6]];\n prev = lut[literal >> 6] * 3;\n }\n }\n ChooseContextMap(quality, &bigram_prefix_histo[0], num_literal_contexts,\n literal_context_map);\n }\n}\n\nstatic BROTLI_BOOL ShouldCompress(\n const uint8_t* data, const size_t mask, const uint64_t last_flush_pos,\n const size_t bytes, const size_t num_literals, const size_t num_commands) {\n /* TODO(eustas): find more precise minimal block overhead. */\n if (bytes <= 2) return BROTLI_FALSE;\n if (num_commands < (bytes >> 8) + 2) {\n if ((double)num_literals > 0.99 * (double)bytes) {\n uint32_t literal_histo[256] = { 0 };\n static const uint32_t kSampleRate = 13;\n static const double kInvSampleRate = 1.0 / 13.0;\n static const double kMinEntropy = 7.92;\n const double bit_cost_threshold =\n (double)bytes * kMinEntropy * kInvSampleRate;\n size_t t = (bytes + kSampleRate - 1) / kSampleRate;\n uint32_t pos = (uint32_t)last_flush_pos;\n size_t i;\n for (i = 0; i < t; i++) {\n ++literal_histo[data[pos & mask]];\n pos += kSampleRate;\n }\n if (BrotliBitsEntropy(literal_histo, 256) > bit_cost_threshold) {\n return BROTLI_FALSE;\n }\n }\n }\n return BROTLI_TRUE;\n}\n\n/* Chooses the literal context mode for a metablock */\nstatic ContextType ChooseContextMode(const BrotliEncoderParams* params,\n const uint8_t* data, const size_t pos, const size_t mask,\n const size_t length) {\n /* We only do the computation for the option of something else than\n CONTEXT_UTF8 for the highest qualities */\n if (params->quality >= MIN_QUALITY_FOR_HQ_BLOCK_SPLITTING &&\n !BrotliIsMostlyUTF8(data, pos, mask, length, kMinUTF8Ratio)) {\n return CONTEXT_SIGNED;\n }\n return CONTEXT_UTF8;\n}\n\nstatic void WriteMetaBlockInternal(MemoryManager* m,\n const uint8_t* data,\n const size_t mask,\n const uint64_t last_flush_pos,\n const size_t bytes,\n const BROTLI_BOOL is_last,\n ContextType literal_context_mode,\n const BrotliEncoderParams* params,\n const uint8_t prev_byte,\n const uint8_t prev_byte2,\n const size_t num_literals,\n const size_t num_commands,\n Command* commands,\n const int* saved_dist_cache,\n int* dist_cache,\n size_t* storage_ix,\n uint8_t* storage) {\n const uint32_t wrapped_last_flush_pos = WrapPosition(last_flush_pos);\n uint16_t last_bytes;\n uint8_t last_bytes_bits;\n ContextLut literal_context_lut = BROTLI_CONTEXT_LUT(literal_context_mode);\n BrotliEncoderParams block_params = *params;\n\n if (bytes == 0) {\n /* Write the ISLAST and ISEMPTY bits. */\n BrotliWriteBits(2, 3, storage_ix, storage);\n *storage_ix = (*storage_ix + 7u) & ~7u;\n return;\n }\n\n if (!ShouldCompress(data, mask, last_flush_pos, bytes,\n num_literals, num_commands)) {\n /* Restore the distance cache, as its last update by\n CreateBackwardReferences is now unused. */\n memcpy(dist_cache, saved_dist_cache, 4 * sizeof(dist_cache[0]));\n BrotliStoreUncompressedMetaBlock(is_last, data,\n wrapped_last_flush_pos, mask, bytes,\n storage_ix, storage);\n return;\n }\n\n BROTLI_DCHECK(*storage_ix <= 14);\n last_bytes = (uint16_t)((storage[1] << 8) | storage[0]);\n last_bytes_bits = (uint8_t)(*storage_ix);\n if (params->quality <= MAX_QUALITY_FOR_STATIC_ENTROPY_CODES) {\n BrotliStoreMetaBlockFast(m, data, wrapped_last_flush_pos,\n bytes, mask, is_last, params,\n commands, num_commands,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n } else if (params->quality < MIN_QUALITY_FOR_BLOCK_SPLIT) {\n BrotliStoreMetaBlockTrivial(m, data, wrapped_last_flush_pos,\n bytes, mask, is_last, params,\n commands, num_commands,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n } else {\n MetaBlockSplit mb;\n InitMetaBlockSplit(&mb);\n if (params->quality < MIN_QUALITY_FOR_HQ_BLOCK_SPLITTING) {\n size_t num_literal_contexts = 1;\n const uint32_t* literal_context_map = NULL;\n if (!params->disable_literal_context_modeling) {\n /* TODO(eustas): pull to higher level and reuse. */\n uint32_t* arena =\n BROTLI_ALLOC(m, uint32_t, 32 * (BROTLI_MAX_STATIC_CONTEXTS + 1));\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(arena)) return;\n DecideOverLiteralContextModeling(\n data, wrapped_last_flush_pos, bytes, mask, params->quality,\n params->size_hint, &num_literal_contexts,\n &literal_context_map, arena);\n BROTLI_FREE(m, arena);\n }\n BrotliBuildMetaBlockGreedy(m, data, wrapped_last_flush_pos, mask,\n prev_byte, prev_byte2, literal_context_lut, num_literal_contexts,\n literal_context_map, commands, num_commands, &mb);\n if (BROTLI_IS_OOM(m)) return;\n } else {\n BrotliBuildMetaBlock(m, data, wrapped_last_flush_pos, mask, &block_params,\n prev_byte, prev_byte2,\n commands, num_commands,\n literal_context_mode,\n &mb);\n if (BROTLI_IS_OOM(m)) return;\n }\n if (params->quality >= MIN_QUALITY_FOR_OPTIMIZE_HISTOGRAMS) {\n /* The number of distance symbols effectively used for distance\n histograms. It might be less than distance alphabet size\n for \"Large Window Brotli\" (32-bit). */\n BrotliOptimizeHistograms(block_params.dist.alphabet_size_limit, &mb);\n }\n BrotliStoreMetaBlock(m, data, wrapped_last_flush_pos, bytes, mask,\n prev_byte, prev_byte2,\n is_last,\n &block_params,\n literal_context_mode,\n commands, num_commands,\n &mb,\n storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return;\n DestroyMetaBlockSplit(m, &mb);\n }\n if (bytes + 4 < (*storage_ix >> 3)) {\n /* Restore the distance cache and last byte. */\n memcpy(dist_cache, saved_dist_cache, 4 * sizeof(dist_cache[0]));\n storage[0] = (uint8_t)last_bytes;\n storage[1] = (uint8_t)(last_bytes >> 8);\n *storage_ix = last_bytes_bits;\n BrotliStoreUncompressedMetaBlock(is_last, data,\n wrapped_last_flush_pos, mask,\n bytes, storage_ix, storage);\n }\n}\n\nstatic void ChooseDistanceParams(BrotliEncoderParams* params) {\n uint32_t distance_postfix_bits = 0;\n uint32_t num_direct_distance_codes = 0;\n\n if (params->quality >= MIN_QUALITY_FOR_NONZERO_DISTANCE_PARAMS) {\n uint32_t ndirect_msb;\n if (params->mode == BROTLI_MODE_FONT) {\n distance_postfix_bits = 1;\n num_direct_distance_codes = 12;\n } else {\n distance_postfix_bits = params->dist.distance_postfix_bits;\n num_direct_distance_codes = params->dist.num_direct_distance_codes;\n }\n ndirect_msb = (num_direct_distance_codes >> distance_postfix_bits) & 0x0F;\n if (distance_postfix_bits > BROTLI_MAX_NPOSTFIX ||\n num_direct_distance_codes > BROTLI_MAX_NDIRECT ||\n (ndirect_msb << distance_postfix_bits) != num_direct_distance_codes) {\n distance_postfix_bits = 0;\n num_direct_distance_codes = 0;\n }\n }\n\n BrotliInitDistanceParams(¶ms->dist, distance_postfix_bits,\n num_direct_distance_codes, params->large_window);\n}\n\nstatic BROTLI_BOOL EnsureInitialized(BrotliEncoderState* s) {\n MemoryManager* m = &s->memory_manager_;\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n if (s->is_initialized_) return BROTLI_TRUE;\n\n s->last_bytes_bits_ = 0;\n s->last_bytes_ = 0;\n s->flint_ = BROTLI_FLINT_DONE;\n s->remaining_metadata_bytes_ = BROTLI_UINT32_MAX;\n\n SanitizeParams(&s->params);\n s->params.lgblock = ComputeLgBlock(&s->params);\n ChooseDistanceParams(&s->params);\n\n if (s->params.stream_offset != 0) {\n s->flint_ = BROTLI_FLINT_NEEDS_2_BYTES;\n /* Poison the distance cache. -16 +- 3 is still less than zero (invalid). */\n s->dist_cache_[0] = -16;\n s->dist_cache_[1] = -16;\n s->dist_cache_[2] = -16;\n s->dist_cache_[3] = -16;\n memcpy(s->saved_dist_cache_, s->dist_cache_, sizeof(s->saved_dist_cache_));\n }\n\n RingBufferSetup(&s->params, &s->ringbuffer_);\n\n /* Initialize last byte with stream header. */\n {\n int lgwin = s->params.lgwin;\n if (s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY ||\n s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n lgwin = BROTLI_MAX(int, lgwin, 18);\n }\n if (s->params.stream_offset == 0) {\n EncodeWindowBits(lgwin, s->params.large_window,\n &s->last_bytes_, &s->last_bytes_bits_);\n } else {\n /* Bigger values have the same effect, but could cause overflows. */\n s->params.stream_offset = BROTLI_MIN(size_t,\n s->params.stream_offset, BROTLI_MAX_BACKWARD_LIMIT(lgwin));\n }\n }\n\n if (s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY) {\n s->one_pass_arena_ = BROTLI_ALLOC(m, BrotliOnePassArena, 1);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n InitCommandPrefixCodes(s->one_pass_arena_);\n } else if (s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n s->two_pass_arena_ = BROTLI_ALLOC(m, BrotliTwoPassArena, 1);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n }\n\n s->is_initialized_ = BROTLI_TRUE;\n return BROTLI_TRUE;\n}\n\nstatic void BrotliEncoderInitParams(BrotliEncoderParams* params) {\n params->mode = BROTLI_DEFAULT_MODE;\n params->large_window = BROTLI_FALSE;\n params->quality = BROTLI_DEFAULT_QUALITY;\n params->lgwin = BROTLI_DEFAULT_WINDOW;\n params->lgblock = 0;\n params->stream_offset = 0;\n params->size_hint = 0;\n params->disable_literal_context_modeling = BROTLI_FALSE;\n BrotliInitSharedEncoderDictionary(¶ms->dictionary);\n params->dist.distance_postfix_bits = 0;\n params->dist.num_direct_distance_codes = 0;\n params->dist.alphabet_size_max =\n BROTLI_DISTANCE_ALPHABET_SIZE(0, 0, BROTLI_MAX_DISTANCE_BITS);\n params->dist.alphabet_size_limit = params->dist.alphabet_size_max;\n params->dist.max_distance = BROTLI_MAX_DISTANCE;\n}\n\nstatic void BrotliEncoderCleanupParams(MemoryManager* m,\n BrotliEncoderParams* params) {\n BrotliCleanupSharedEncoderDictionary(m, ¶ms->dictionary);\n}\n\n#ifdef BROTLI_REPORTING\n/* When BROTLI_REPORTING is defined extra reporting module have to be linked. */\nvoid BrotliEncoderOnStart(const BrotliEncoderState* s);\nvoid BrotliEncoderOnFinish(const BrotliEncoderState* s);\n#define BROTLI_ENCODER_ON_START(s) BrotliEncoderOnStart(s);\n#define BROTLI_ENCODER_ON_FINISH(s) BrotliEncoderOnFinish(s);\n#else\n#if !defined(BROTLI_ENCODER_ON_START)\n#define BROTLI_ENCODER_ON_START(s) (void)(s);\n#endif\n#if !defined(BROTLI_ENCODER_ON_FINISH)\n#define BROTLI_ENCODER_ON_FINISH(s) (void)(s);\n#endif\n#endif\n\nstatic void BrotliEncoderInitState(BrotliEncoderState* s) {\n BROTLI_ENCODER_ON_START(s);\n BrotliEncoderInitParams(&s->params);\n s->input_pos_ = 0;\n s->num_commands_ = 0;\n s->num_literals_ = 0;\n s->last_insert_len_ = 0;\n s->last_flush_pos_ = 0;\n s->last_processed_pos_ = 0;\n s->prev_byte_ = 0;\n s->prev_byte2_ = 0;\n s->storage_size_ = 0;\n s->storage_ = 0;\n HasherInit(&s->hasher_);\n s->large_table_ = NULL;\n s->large_table_size_ = 0;\n s->one_pass_arena_ = NULL;\n s->two_pass_arena_ = NULL;\n s->command_buf_ = NULL;\n s->literal_buf_ = NULL;\n s->total_in_ = 0;\n s->next_out_ = NULL;\n s->available_out_ = 0;\n s->total_out_ = 0;\n s->stream_state_ = BROTLI_STREAM_PROCESSING;\n s->is_last_block_emitted_ = BROTLI_FALSE;\n s->is_initialized_ = BROTLI_FALSE;\n\n RingBufferInit(&s->ringbuffer_);\n\n s->commands_ = 0;\n s->cmd_alloc_size_ = 0;\n\n /* Initialize distance cache. */\n s->dist_cache_[0] = 4;\n s->dist_cache_[1] = 11;\n s->dist_cache_[2] = 15;\n s->dist_cache_[3] = 16;\n /* Save the state of the distance cache in case we need to restore it for\n emitting an uncompressed block. */\n memcpy(s->saved_dist_cache_, s->dist_cache_, sizeof(s->saved_dist_cache_));\n}\n\nBrotliEncoderState* BrotliEncoderCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n BROTLI_BOOL healthy = BrotliEncoderEnsureStaticInit();\n if (!healthy) {\n return 0;\n }\n BrotliEncoderState* state = (BrotliEncoderState*)BrotliBootstrapAlloc(\n sizeof(BrotliEncoderState), alloc_func, free_func, opaque);\n if (state == NULL) {\n /* BROTLI_DUMP(); */\n return 0;\n }\n BrotliInitMemoryManager(\n &state->memory_manager_, alloc_func, free_func, opaque);\n BrotliEncoderInitState(state);\n return state;\n}\n\nstatic void BrotliEncoderCleanupState(BrotliEncoderState* s) {\n MemoryManager* m = &s->memory_manager_;\n\n BROTLI_ENCODER_ON_FINISH(s);\n\n if (BROTLI_IS_OOM(m)) {\n BrotliWipeOutMemoryManager(m);\n return;\n }\n\n BROTLI_FREE(m, s->storage_);\n BROTLI_FREE(m, s->commands_);\n RingBufferFree(m, &s->ringbuffer_);\n DestroyHasher(m, &s->hasher_);\n BROTLI_FREE(m, s->large_table_);\n BROTLI_FREE(m, s->one_pass_arena_);\n BROTLI_FREE(m, s->two_pass_arena_);\n BROTLI_FREE(m, s->command_buf_);\n BROTLI_FREE(m, s->literal_buf_);\n BrotliEncoderCleanupParams(m, &s->params);\n}\n\n/* Deinitializes and frees BrotliEncoderState instance. */\nvoid BrotliEncoderDestroyInstance(BrotliEncoderState* state) {\n if (!state) {\n return;\n } else {\n BrotliEncoderCleanupState(state);\n BrotliBootstrapFree(state, &state->memory_manager_);\n }\n}\n\n/*\n Copies the given input data to the internal ring buffer of the compressor.\n No processing of the data occurs at this time and this function can be\n called multiple times before calling WriteBrotliData() to process the\n accumulated input. At most input_block_size() bytes of input data can be\n copied to the ring buffer, otherwise the next WriteBrotliData() will fail.\n */\nstatic void CopyInputToRingBuffer(BrotliEncoderState* s,\n const size_t input_size,\n const uint8_t* input_buffer) {\n RingBuffer* ringbuffer_ = &s->ringbuffer_;\n MemoryManager* m = &s->memory_manager_;\n RingBufferWrite(m, input_buffer, input_size, ringbuffer_);\n if (BROTLI_IS_OOM(m)) return;\n s->input_pos_ += input_size;\n\n /* TL;DR: If needed, initialize 7 more bytes in the ring buffer to make the\n hashing not depend on uninitialized data. This makes compression\n deterministic and it prevents uninitialized memory warnings in Valgrind.\n Even without erasing, the output would be valid (but nondeterministic).\n\n Background information: The compressor stores short (at most 8 bytes)\n substrings of the input already read in a hash table, and detects\n repetitions by looking up such substrings in the hash table. If it\n can find a substring, it checks whether the substring is really there\n in the ring buffer (or it's just a hash collision). Should the hash\n table become corrupt, this check makes sure that the output is\n still valid, albeit the compression ratio would be bad.\n\n The compressor populates the hash table from the ring buffer as it's\n reading new bytes from the input. However, at the last few indexes of\n the ring buffer, there are not enough bytes to build full-length\n substrings from. Since the hash table always contains full-length\n substrings, we overwrite with zeros here to make sure that those\n substrings will contain zeros at the end instead of uninitialized\n data.\n\n Please note that erasing is not necessary (because the\n memory region is already initialized since he ring buffer\n has a `tail' that holds a copy of the beginning,) so we\n skip erasing if we have already gone around at least once in\n the ring buffer.\n\n Only clear during the first round of ring-buffer writes. On\n subsequent rounds data in the ring-buffer would be affected. */\n if (ringbuffer_->pos_ <= ringbuffer_->mask_) {\n /* This is the first time when the ring buffer is being written.\n We clear 7 bytes just after the bytes that have been copied from\n the input buffer.\n\n The ring-buffer has a \"tail\" that holds a copy of the beginning,\n but only once the ring buffer has been fully written once, i.e.,\n pos <= mask. For the first time, we need to write values\n in this tail (where index may be larger than mask), so that\n we have exactly defined behavior and don't read uninitialized\n memory. Due to performance reasons, hashing reads data using a\n LOAD64, which can go 7 bytes beyond the bytes written in the\n ring-buffer. */\n memset(ringbuffer_->buffer_ + ringbuffer_->pos_, 0, 7);\n }\n}\n\n/* Marks all input as processed.\n Returns true if position wrapping occurs. */\nstatic BROTLI_BOOL UpdateLastProcessedPos(BrotliEncoderState* s) {\n uint32_t wrapped_last_processed_pos = WrapPosition(s->last_processed_pos_);\n uint32_t wrapped_input_pos = WrapPosition(s->input_pos_);\n s->last_processed_pos_ = s->input_pos_;\n return TO_BROTLI_BOOL(wrapped_input_pos < wrapped_last_processed_pos);\n}\n\nstatic void ExtendLastCommand(BrotliEncoderState* s, uint32_t* bytes,\n uint32_t* wrapped_last_processed_pos) {\n Command* last_command = &s->commands_[s->num_commands_ - 1];\n const uint8_t* data = s->ringbuffer_.buffer_;\n const uint32_t mask = s->ringbuffer_.mask_;\n uint64_t max_backward_distance =\n (((uint64_t)1) << s->params.lgwin) - BROTLI_WINDOW_GAP;\n uint64_t last_copy_len = last_command->copy_len_ & 0x1FFFFFF;\n uint64_t last_processed_pos = s->last_processed_pos_ - last_copy_len;\n uint64_t max_distance = last_processed_pos < max_backward_distance ?\n last_processed_pos : max_backward_distance;\n uint64_t cmd_dist = (uint64_t)s->dist_cache_[0];\n uint32_t distance_code = CommandRestoreDistanceCode(last_command,\n &s->params.dist);\n const CompoundDictionary* dict = &s->params.dictionary.compound;\n size_t compound_dictionary_size = dict->total_size;\n if (distance_code < BROTLI_NUM_DISTANCE_SHORT_CODES ||\n distance_code - (BROTLI_NUM_DISTANCE_SHORT_CODES - 1) == cmd_dist) {\n if (cmd_dist <= max_distance) {\n while (*bytes != 0 && data[*wrapped_last_processed_pos & mask] ==\n data[(*wrapped_last_processed_pos - cmd_dist) & mask]) {\n last_command->copy_len_++;\n (*bytes)--;\n (*wrapped_last_processed_pos)++;\n }\n } else {\n if ((cmd_dist - max_distance - 1) < compound_dictionary_size &&\n last_copy_len < cmd_dist - max_distance) {\n size_t address =\n compound_dictionary_size - (size_t)(cmd_dist - max_distance) +\n (size_t)last_copy_len;\n size_t br_index = 0;\n size_t br_offset;\n const uint8_t* chunk;\n size_t chunk_length;\n while (address >= dict->chunk_offsets[br_index + 1]) br_index++;\n br_offset = address - dict->chunk_offsets[br_index];\n chunk = dict->chunk_source[br_index];\n chunk_length =\n dict->chunk_offsets[br_index + 1] - dict->chunk_offsets[br_index];\n while (*bytes != 0 && data[*wrapped_last_processed_pos & mask] ==\n chunk[br_offset]) {\n last_command->copy_len_++;\n (*bytes)--;\n (*wrapped_last_processed_pos)++;\n if (++br_offset == chunk_length) {\n br_index++;\n br_offset = 0;\n if (br_index != dict->num_chunks) {\n chunk = dict->chunk_source[br_index];\n chunk_length = dict->chunk_offsets[br_index + 1] -\n dict->chunk_offsets[br_index];\n } else {\n break;\n }\n }\n }\n }\n }\n /* The copy length is at most the metablock size, and thus expressible. */\n GetLengthCode(last_command->insert_len_,\n (size_t)((int)(last_command->copy_len_ & 0x1FFFFFF) +\n (int)(last_command->copy_len_ >> 25)),\n TO_BROTLI_BOOL((last_command->dist_prefix_ & 0x3FF) == 0),\n &last_command->cmd_prefix_);\n }\n}\n\n/*\n Processes the accumulated input data and sets |*out_size| to the length of\n the new output meta-block, or to zero if no new output meta-block has been\n created (in this case the processed input data is buffered internally).\n If |*out_size| is positive, |*output| points to the start of the output\n data. If |is_last| or |force_flush| is BROTLI_TRUE, an output meta-block is\n always created. However, until |is_last| is BROTLI_TRUE encoder may retain up\n to 7 bits of the last byte of output. Byte-alignment could be enforced by\n emitting an empty meta-data block.\n Returns BROTLI_FALSE if the size of the input data is larger than\n input_block_size().\n */\nstatic BROTLI_BOOL EncodeData(\n BrotliEncoderState* s, const BROTLI_BOOL is_last,\n const BROTLI_BOOL force_flush, size_t* out_size, uint8_t** output) {\n const uint64_t delta = UnprocessedInputSize(s);\n uint32_t bytes = (uint32_t)delta;\n uint32_t wrapped_last_processed_pos = WrapPosition(s->last_processed_pos_);\n uint8_t* data;\n uint32_t mask;\n MemoryManager* m = &s->memory_manager_;\n ContextType literal_context_mode;\n ContextLut literal_context_lut;\n BROTLI_BOOL fast_compress =\n s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY ||\n s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY;\n\n data = s->ringbuffer_.buffer_;\n mask = s->ringbuffer_.mask_;\n\n if (delta == 0) { /* No new input; still might want to flush or finish. */\n if (!data) { /* No input has been processed so far. */\n if (is_last) { /* Emit complete finalized stream. */\n BROTLI_DCHECK(s->last_bytes_bits_ <= 14);\n s->last_bytes_ |= (uint16_t)(3u << s->last_bytes_bits_);\n s->last_bytes_bits_ = (uint8_t)(s->last_bytes_bits_ + 2u);\n s->tiny_buf_.u8[0] = (uint8_t)s->last_bytes_;\n s->tiny_buf_.u8[1] = (uint8_t)(s->last_bytes_ >> 8);\n *output = s->tiny_buf_.u8;\n *out_size = (s->last_bytes_bits_ + 7u) >> 3u;\n return BROTLI_TRUE;\n } else { /* No data, not last -> no-op. */\n *out_size = 0;\n return BROTLI_TRUE;\n }\n } else {\n /* Fast compress performs flush every block -> flush is no-op. */\n if (!is_last && (!force_flush || fast_compress)) { /* Another no-op. */\n *out_size = 0;\n return BROTLI_TRUE;\n }\n }\n }\n BROTLI_DCHECK(data);\n\n if (s->params.quality > s->params.dictionary.max_quality) return BROTLI_FALSE;\n /* Adding more blocks after \"last\" block is forbidden. */\n if (s->is_last_block_emitted_) return BROTLI_FALSE;\n if (is_last) s->is_last_block_emitted_ = BROTLI_TRUE;\n\n if (delta > InputBlockSize(s)) {\n return BROTLI_FALSE;\n }\n if (s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY &&\n !s->command_buf_) {\n s->command_buf_ =\n BROTLI_ALLOC(m, uint32_t, kCompressFragmentTwoPassBlockSize);\n s->literal_buf_ =\n BROTLI_ALLOC(m, uint8_t, kCompressFragmentTwoPassBlockSize);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(s->command_buf_) ||\n BROTLI_IS_NULL(s->literal_buf_)) {\n return BROTLI_FALSE;\n }\n }\n\n if (fast_compress) {\n uint8_t* storage;\n size_t storage_ix = s->last_bytes_bits_;\n size_t table_size;\n int* table;\n\n storage = GetBrotliStorage(s, 2 * bytes + 503);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n storage[0] = (uint8_t)s->last_bytes_;\n storage[1] = (uint8_t)(s->last_bytes_ >> 8);\n table = GetHashTable(s, s->params.quality, bytes, &table_size);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n if (s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY) {\n BrotliCompressFragmentFast(\n s->one_pass_arena_, &data[wrapped_last_processed_pos & mask],\n bytes, is_last,\n table, table_size,\n &storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n } else {\n BrotliCompressFragmentTwoPass(\n s->two_pass_arena_, &data[wrapped_last_processed_pos & mask],\n bytes, is_last,\n s->command_buf_, s->literal_buf_,\n table, table_size,\n &storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n }\n s->last_bytes_ = (uint16_t)(storage[storage_ix >> 3]);\n s->last_bytes_bits_ = storage_ix & 7u;\n UpdateLastProcessedPos(s);\n *output = &storage[0];\n *out_size = storage_ix >> 3;\n return BROTLI_TRUE;\n }\n\n {\n /* Theoretical max number of commands is 1 per 2 bytes. */\n size_t newsize = s->num_commands_ + bytes / 2 + 1;\n if (newsize > s->cmd_alloc_size_) {\n Command* new_commands;\n /* Reserve a bit more memory to allow merging with a next block\n without reallocation: that would impact speed. */\n newsize += (bytes / 4) + 16;\n s->cmd_alloc_size_ = newsize;\n new_commands = BROTLI_ALLOC(m, Command, newsize);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(new_commands)) return BROTLI_FALSE;\n if (s->commands_) {\n memcpy(new_commands, s->commands_, sizeof(Command) * s->num_commands_);\n BROTLI_FREE(m, s->commands_);\n }\n s->commands_ = new_commands;\n }\n }\n\n InitOrStitchToPreviousBlock(m, &s->hasher_, data, mask, &s->params,\n wrapped_last_processed_pos, bytes, is_last);\n\n literal_context_mode = ChooseContextMode(\n &s->params, data, WrapPosition(s->last_flush_pos_),\n mask, (size_t)(s->input_pos_ - s->last_flush_pos_));\n literal_context_lut = BROTLI_CONTEXT_LUT(literal_context_mode);\n\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n\n if (s->num_commands_ && s->last_insert_len_ == 0) {\n ExtendLastCommand(s, &bytes, &wrapped_last_processed_pos);\n }\n\n if (s->params.quality == ZOPFLIFICATION_QUALITY) {\n BROTLI_DCHECK(s->params.hasher.type == 10);\n BrotliCreateZopfliBackwardReferences(m, bytes, wrapped_last_processed_pos,\n data, mask, literal_context_lut, &s->params,\n &s->hasher_, s->dist_cache_,\n &s->last_insert_len_, &s->commands_[s->num_commands_],\n &s->num_commands_, &s->num_literals_);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n } else if (s->params.quality == HQ_ZOPFLIFICATION_QUALITY) {\n BROTLI_DCHECK(s->params.hasher.type == 10);\n BrotliCreateHqZopfliBackwardReferences(m, bytes, wrapped_last_processed_pos,\n data, mask, literal_context_lut, &s->params,\n &s->hasher_, s->dist_cache_,\n &s->last_insert_len_, &s->commands_[s->num_commands_],\n &s->num_commands_, &s->num_literals_);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n } else {\n BrotliCreateBackwardReferences(bytes, wrapped_last_processed_pos,\n data, mask, literal_context_lut, &s->params,\n &s->hasher_, s->dist_cache_,\n &s->last_insert_len_, &s->commands_[s->num_commands_],\n &s->num_commands_, &s->num_literals_);\n }\n\n {\n const size_t max_length = MaxMetablockSize(&s->params);\n const size_t max_literals = max_length / 8;\n const size_t max_commands = max_length / 8;\n const size_t processed_bytes = (size_t)(s->input_pos_ - s->last_flush_pos_);\n /* If maximal possible additional block doesn't fit metablock, flush now. */\n /* TODO(eustas): Postpone decision until next block arrives? */\n const BROTLI_BOOL next_input_fits_metablock = TO_BROTLI_BOOL(\n processed_bytes + InputBlockSize(s) <= max_length);\n /* If block splitting is not used, then flush as soon as there is some\n amount of commands / literals produced. */\n const BROTLI_BOOL should_flush = TO_BROTLI_BOOL(\n s->params.quality < MIN_QUALITY_FOR_BLOCK_SPLIT &&\n s->num_literals_ + s->num_commands_ >= MAX_NUM_DELAYED_SYMBOLS);\n if (!is_last && !force_flush && !should_flush &&\n next_input_fits_metablock &&\n s->num_literals_ < max_literals &&\n s->num_commands_ < max_commands) {\n /* Merge with next input block. Everything will happen later. */\n if (UpdateLastProcessedPos(s)) {\n HasherReset(&s->hasher_);\n }\n *out_size = 0;\n return BROTLI_TRUE;\n }\n }\n\n /* Create the last insert-only command. */\n if (s->last_insert_len_ > 0) {\n InitInsertCommand(&s->commands_[s->num_commands_++], s->last_insert_len_);\n s->num_literals_ += s->last_insert_len_;\n s->last_insert_len_ = 0;\n }\n\n if (!is_last && s->input_pos_ == s->last_flush_pos_) {\n /* We have no new input data and we don't have to finish the stream, so\n nothing to do. */\n *out_size = 0;\n return BROTLI_TRUE;\n }\n BROTLI_DCHECK(s->input_pos_ >= s->last_flush_pos_);\n BROTLI_DCHECK(s->input_pos_ > s->last_flush_pos_ || is_last);\n BROTLI_DCHECK(s->input_pos_ - s->last_flush_pos_ <= 1u << 24);\n {\n const uint32_t metablock_size =\n (uint32_t)(s->input_pos_ - s->last_flush_pos_);\n uint8_t* storage = GetBrotliStorage(s, 2 * metablock_size + 503);\n size_t storage_ix = s->last_bytes_bits_;\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n storage[0] = (uint8_t)s->last_bytes_;\n storage[1] = (uint8_t)(s->last_bytes_ >> 8);\n WriteMetaBlockInternal(\n m, data, mask, s->last_flush_pos_, metablock_size, is_last,\n literal_context_mode, &s->params, s->prev_byte_, s->prev_byte2_,\n s->num_literals_, s->num_commands_, s->commands_, s->saved_dist_cache_,\n s->dist_cache_, &storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n s->last_bytes_ = (uint16_t)(storage[storage_ix >> 3]);\n s->last_bytes_bits_ = storage_ix & 7u;\n s->last_flush_pos_ = s->input_pos_;\n if (UpdateLastProcessedPos(s)) {\n HasherReset(&s->hasher_);\n }\n if (s->last_flush_pos_ > 0) {\n s->prev_byte_ = data[((uint32_t)s->last_flush_pos_ - 1) & mask];\n }\n if (s->last_flush_pos_ > 1) {\n s->prev_byte2_ = data[(uint32_t)(s->last_flush_pos_ - 2) & mask];\n }\n s->num_commands_ = 0;\n s->num_literals_ = 0;\n /* Save the state of the distance cache in case we need to restore it for\n emitting an uncompressed block. */\n memcpy(s->saved_dist_cache_, s->dist_cache_, sizeof(s->saved_dist_cache_));\n *output = &storage[0];\n *out_size = storage_ix >> 3;\n return BROTLI_TRUE;\n }\n}\n\n/* Dumps remaining output bits and metadata header to |header|.\n Returns number of produced bytes.\n REQUIRED: |header| should be 8-byte aligned and at least 16 bytes long.\n REQUIRED: |block_size| <= (1 << 24). */\nstatic size_t WriteMetadataHeader(\n BrotliEncoderState* s, const size_t block_size, uint8_t* header) {\n size_t storage_ix;\n storage_ix = s->last_bytes_bits_;\n header[0] = (uint8_t)s->last_bytes_;\n header[1] = (uint8_t)(s->last_bytes_ >> 8);\n s->last_bytes_ = 0;\n s->last_bytes_bits_ = 0;\n\n BrotliWriteBits(1, 0, &storage_ix, header);\n BrotliWriteBits(2, 3, &storage_ix, header);\n BrotliWriteBits(1, 0, &storage_ix, header);\n if (block_size == 0) {\n BrotliWriteBits(2, 0, &storage_ix, header);\n } else {\n uint32_t nbits = (block_size == 1) ? 1 :\n (Log2FloorNonZero((uint32_t)block_size - 1) + 1);\n uint32_t nbytes = (nbits + 7) / 8;\n BrotliWriteBits(2, nbytes, &storage_ix, header);\n BrotliWriteBits(8 * nbytes, block_size - 1, &storage_ix, header);\n }\n return (storage_ix + 7u) >> 3;\n}\n\nsize_t BrotliEncoderMaxCompressedSize(size_t input_size) {\n /* [window bits / empty metadata] + N * [uncompressed] + [last empty] */\n size_t num_large_blocks = input_size >> 14;\n size_t overhead = 2 + (4 * num_large_blocks) + 3 + 1;\n size_t result = input_size + overhead;\n if (input_size == 0) return 2;\n return (result < input_size) ? 0 : result;\n}\n\n/* Wraps data to uncompressed brotli stream with minimal window size.\n |output| should point at region with at least BrotliEncoderMaxCompressedSize\n addressable bytes.\n Returns the length of stream. */\nstatic size_t MakeUncompressedStream(\n const uint8_t* input, size_t input_size, uint8_t* output) {\n size_t size = input_size;\n size_t result = 0;\n size_t offset = 0;\n if (input_size == 0) {\n output[0] = 6;\n return 1;\n }\n output[result++] = 0x21; /* window bits = 10, is_last = false */\n output[result++] = 0x03; /* empty metadata, padding */\n while (size > 0) {\n uint32_t nibbles = 0;\n uint32_t chunk_size;\n uint32_t bits;\n chunk_size = (size > (1u << 24)) ? (1u << 24) : (uint32_t)size;\n if (chunk_size > (1u << 16)) nibbles = (chunk_size > (1u << 20)) ? 2 : 1;\n bits =\n (nibbles << 1) | ((chunk_size - 1) << 3) | (1u << (19 + 4 * nibbles));\n output[result++] = (uint8_t)bits;\n output[result++] = (uint8_t)(bits >> 8);\n output[result++] = (uint8_t)(bits >> 16);\n if (nibbles == 2) output[result++] = (uint8_t)(bits >> 24);\n memcpy(&output[result], &input[offset], chunk_size);\n result += chunk_size;\n offset += chunk_size;\n size -= chunk_size;\n }\n output[result++] = 3;\n return result;\n}\n\nBROTLI_BOOL BrotliEncoderCompress(\n int quality, int lgwin, BrotliEncoderMode mode, size_t input_size,\n const uint8_t input_buffer[BROTLI_ARRAY_PARAM(input_size)],\n size_t* encoded_size,\n uint8_t encoded_buffer[BROTLI_ARRAY_PARAM(*encoded_size)]) {\n BrotliEncoderState* s;\n size_t out_size = *encoded_size;\n const uint8_t* input_start = input_buffer;\n uint8_t* output_start = encoded_buffer;\n size_t max_out_size = BrotliEncoderMaxCompressedSize(input_size);\n if (out_size == 0) {\n /* Output buffer needs at least one byte. */\n return BROTLI_FALSE;\n }\n if (input_size == 0) {\n /* Handle the special case of empty input. */\n *encoded_size = 1;\n *encoded_buffer = 6;\n return BROTLI_TRUE;\n }\n\n s = BrotliEncoderCreateInstance(0, 0, 0);\n if (!s) {\n return BROTLI_FALSE;\n } else {\n size_t available_in = input_size;\n const uint8_t* next_in = input_buffer;\n size_t available_out = *encoded_size;\n uint8_t* next_out = encoded_buffer;\n size_t total_out = 0;\n BROTLI_BOOL result = BROTLI_FALSE;\n /* TODO(eustas): check that parameters are sane. */\n BrotliEncoderSetParameter(s, BROTLI_PARAM_QUALITY, (uint32_t)quality);\n BrotliEncoderSetParameter(s, BROTLI_PARAM_LGWIN, (uint32_t)lgwin);\n BrotliEncoderSetParameter(s, BROTLI_PARAM_MODE, (uint32_t)mode);\n BrotliEncoderSetParameter(s, BROTLI_PARAM_SIZE_HINT, (uint32_t)input_size);\n if (lgwin > BROTLI_MAX_WINDOW_BITS) {\n BrotliEncoderSetParameter(s, BROTLI_PARAM_LARGE_WINDOW, BROTLI_TRUE);\n }\n result = BrotliEncoderCompressStream(s, BROTLI_OPERATION_FINISH,\n &available_in, &next_in, &available_out, &next_out, &total_out);\n if (!BrotliEncoderIsFinished(s)) result = 0;\n *encoded_size = total_out;\n BrotliEncoderDestroyInstance(s);\n if (!result || (max_out_size && *encoded_size > max_out_size)) {\n goto fallback;\n }\n return BROTLI_TRUE;\n }\nfallback:\n *encoded_size = 0;\n if (!max_out_size) return BROTLI_FALSE;\n if (out_size >= max_out_size) {\n *encoded_size =\n MakeUncompressedStream(input_start, input_size, output_start);\n return BROTLI_TRUE;\n }\n return BROTLI_FALSE;\n}\n\nstatic void InjectBytePaddingBlock(BrotliEncoderState* s) {\n uint32_t seal = s->last_bytes_;\n size_t seal_bits = s->last_bytes_bits_;\n uint8_t* destination;\n s->last_bytes_ = 0;\n s->last_bytes_bits_ = 0;\n /* is_last = 0, data_nibbles = 11, reserved = 0, meta_nibbles = 00 */\n seal |= 0x6u << seal_bits;\n seal_bits += 6;\n /* If we have already created storage, then append to it.\n Storage is valid until next block is being compressed. */\n if (s->next_out_) {\n destination = s->next_out_ + s->available_out_;\n } else {\n destination = s->tiny_buf_.u8;\n s->next_out_ = destination;\n }\n destination[0] = (uint8_t)seal;\n if (seal_bits > 8) destination[1] = (uint8_t)(seal >> 8);\n if (seal_bits > 16) destination[2] = (uint8_t)(seal >> 16);\n s->available_out_ += (seal_bits + 7) >> 3;\n}\n\n/* Fills the |total_out|, if it is not NULL. */\nstatic void SetTotalOut(BrotliEncoderState* s, size_t* total_out) {\n if (total_out) {\n /* Saturating conversion uint64_t -> size_t */\n size_t result = (size_t)-1;\n if (s->total_out_ < result) {\n result = (size_t)s->total_out_;\n }\n *total_out = result;\n }\n}\n\n/* Injects padding bits or pushes compressed data to output.\n Returns false if nothing is done. */\nstatic BROTLI_BOOL InjectFlushOrPushOutput(BrotliEncoderState* s,\n size_t* available_out, uint8_t** next_out, size_t* total_out) {\n if (s->stream_state_ == BROTLI_STREAM_FLUSH_REQUESTED &&\n s->last_bytes_bits_ != 0) {\n InjectBytePaddingBlock(s);\n return BROTLI_TRUE;\n }\n\n if (s->available_out_ != 0 && *available_out != 0) {\n size_t copy_output_size =\n BROTLI_MIN(size_t, s->available_out_, *available_out);\n memcpy(*next_out, s->next_out_, copy_output_size);\n *next_out += copy_output_size;\n *available_out -= copy_output_size;\n s->next_out_ += copy_output_size;\n s->available_out_ -= copy_output_size;\n s->total_out_ += copy_output_size;\n SetTotalOut(s, total_out);\n return BROTLI_TRUE;\n }\n\n return BROTLI_FALSE;\n}\n\nstatic void CheckFlushComplete(BrotliEncoderState* s) {\n if (s->stream_state_ == BROTLI_STREAM_FLUSH_REQUESTED &&\n s->available_out_ == 0) {\n s->stream_state_ = BROTLI_STREAM_PROCESSING;\n s->next_out_ = 0;\n }\n}\n\nstatic BROTLI_BOOL BrotliEncoderCompressStreamFast(\n BrotliEncoderState* s, BrotliEncoderOperation op, size_t* available_in,\n const uint8_t** next_in, size_t* available_out, uint8_t** next_out,\n size_t* total_out) {\n const size_t block_size_limit = (size_t)1 << s->params.lgwin;\n const size_t buf_size = BROTLI_MIN(size_t, kCompressFragmentTwoPassBlockSize,\n BROTLI_MIN(size_t, *available_in, block_size_limit));\n uint32_t* tmp_command_buf = NULL;\n uint32_t* command_buf = NULL;\n uint8_t* tmp_literal_buf = NULL;\n uint8_t* literal_buf = NULL;\n MemoryManager* m = &s->memory_manager_;\n if (s->params.quality != FAST_ONE_PASS_COMPRESSION_QUALITY &&\n s->params.quality != FAST_TWO_PASS_COMPRESSION_QUALITY) {\n return BROTLI_FALSE;\n }\n if (s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n if (!s->command_buf_ && buf_size == kCompressFragmentTwoPassBlockSize) {\n s->command_buf_ =\n BROTLI_ALLOC(m, uint32_t, kCompressFragmentTwoPassBlockSize);\n s->literal_buf_ =\n BROTLI_ALLOC(m, uint8_t, kCompressFragmentTwoPassBlockSize);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(s->command_buf_) ||\n BROTLI_IS_NULL(s->literal_buf_)) {\n return BROTLI_FALSE;\n }\n }\n if (s->command_buf_) {\n command_buf = s->command_buf_;\n literal_buf = s->literal_buf_;\n } else {\n tmp_command_buf = BROTLI_ALLOC(m, uint32_t, buf_size);\n tmp_literal_buf = BROTLI_ALLOC(m, uint8_t, buf_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(tmp_command_buf) ||\n BROTLI_IS_NULL(tmp_literal_buf)) {\n return BROTLI_FALSE;\n }\n command_buf = tmp_command_buf;\n literal_buf = tmp_literal_buf;\n }\n }\n\n while (BROTLI_TRUE) {\n if (InjectFlushOrPushOutput(s, available_out, next_out, total_out)) {\n continue;\n }\n\n /* Compress block only when internal output buffer is empty, stream is not\n finished, there is no pending flush request, and there is either\n additional input or pending operation. */\n if (s->available_out_ == 0 &&\n s->stream_state_ == BROTLI_STREAM_PROCESSING &&\n (*available_in != 0 || op != BROTLI_OPERATION_PROCESS)) {\n size_t block_size = BROTLI_MIN(size_t, block_size_limit, *available_in);\n BROTLI_BOOL is_last =\n (*available_in == block_size) && (op == BROTLI_OPERATION_FINISH);\n BROTLI_BOOL force_flush =\n (*available_in == block_size) && (op == BROTLI_OPERATION_FLUSH);\n size_t max_out_size = 2 * block_size + 503;\n BROTLI_BOOL inplace = BROTLI_TRUE;\n uint8_t* storage = NULL;\n size_t storage_ix = s->last_bytes_bits_;\n size_t table_size;\n int* table;\n\n if (force_flush && block_size == 0) {\n s->stream_state_ = BROTLI_STREAM_FLUSH_REQUESTED;\n continue;\n }\n if (max_out_size <= *available_out) {\n storage = *next_out;\n } else {\n inplace = BROTLI_FALSE;\n storage = GetBrotliStorage(s, max_out_size);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n }\n storage[0] = (uint8_t)s->last_bytes_;\n storage[1] = (uint8_t)(s->last_bytes_ >> 8);\n table = GetHashTable(s, s->params.quality, block_size, &table_size);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n\n if (s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY) {\n BrotliCompressFragmentFast(s->one_pass_arena_, *next_in, block_size,\n is_last, table, table_size, &storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n } else {\n BrotliCompressFragmentTwoPass(s->two_pass_arena_, *next_in, block_size,\n is_last, command_buf, literal_buf, table, table_size,\n &storage_ix, storage);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n }\n if (block_size != 0) {\n *next_in += block_size;\n *available_in -= block_size;\n s->total_in_ += block_size;\n }\n if (inplace) {\n size_t out_bytes = storage_ix >> 3;\n BROTLI_DCHECK(out_bytes <= *available_out);\n BROTLI_DCHECK((storage_ix & 7) == 0 || out_bytes < *available_out);\n *next_out += out_bytes;\n *available_out -= out_bytes;\n s->total_out_ += out_bytes;\n SetTotalOut(s, total_out);\n } else {\n size_t out_bytes = storage_ix >> 3;\n s->next_out_ = storage;\n s->available_out_ = out_bytes;\n }\n s->last_bytes_ = (uint16_t)(storage[storage_ix >> 3]);\n s->last_bytes_bits_ = storage_ix & 7u;\n\n if (force_flush) s->stream_state_ = BROTLI_STREAM_FLUSH_REQUESTED;\n if (is_last) s->stream_state_ = BROTLI_STREAM_FINISHED;\n continue;\n }\n break;\n }\n BROTLI_FREE(m, tmp_command_buf);\n BROTLI_FREE(m, tmp_literal_buf);\n CheckFlushComplete(s);\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL ProcessMetadata(\n BrotliEncoderState* s, size_t* available_in, const uint8_t** next_in,\n size_t* available_out, uint8_t** next_out, size_t* total_out) {\n if (*available_in > (1u << 24)) return BROTLI_FALSE;\n /* Switch to metadata block workflow, if required. */\n if (s->stream_state_ == BROTLI_STREAM_PROCESSING) {\n s->remaining_metadata_bytes_ = (uint32_t)*available_in;\n s->stream_state_ = BROTLI_STREAM_METADATA_HEAD;\n }\n if (s->stream_state_ != BROTLI_STREAM_METADATA_HEAD &&\n s->stream_state_ != BROTLI_STREAM_METADATA_BODY) {\n return BROTLI_FALSE;\n }\n\n while (BROTLI_TRUE) {\n if (InjectFlushOrPushOutput(s, available_out, next_out, total_out)) {\n continue;\n }\n if (s->available_out_ != 0) break;\n\n if (s->input_pos_ != s->last_flush_pos_) {\n BROTLI_BOOL result = EncodeData(s, BROTLI_FALSE, BROTLI_TRUE,\n &s->available_out_, &s->next_out_);\n if (!result) return BROTLI_FALSE;\n continue;\n }\n\n if (s->stream_state_ == BROTLI_STREAM_METADATA_HEAD) {\n s->next_out_ = s->tiny_buf_.u8;\n s->available_out_ =\n WriteMetadataHeader(s, s->remaining_metadata_bytes_, s->next_out_);\n s->stream_state_ = BROTLI_STREAM_METADATA_BODY;\n continue;\n } else {\n /* Exit workflow only when there is no more input and no more output.\n Otherwise client may continue producing empty metadata blocks. */\n if (s->remaining_metadata_bytes_ == 0) {\n s->remaining_metadata_bytes_ = BROTLI_UINT32_MAX;\n s->stream_state_ = BROTLI_STREAM_PROCESSING;\n break;\n }\n if (*available_out) {\n /* Directly copy input to output. */\n uint32_t copy = (uint32_t)BROTLI_MIN(\n size_t, s->remaining_metadata_bytes_, *available_out);\n memcpy(*next_out, *next_in, copy);\n *next_in += copy;\n *available_in -= copy;\n s->total_in_ += copy; /* not actually data input, though */\n s->remaining_metadata_bytes_ -= copy;\n *next_out += copy;\n *available_out -= copy;\n } else {\n /* This guarantees progress in \"TakeOutput\" workflow. */\n uint32_t copy = BROTLI_MIN(uint32_t, s->remaining_metadata_bytes_, 16);\n s->next_out_ = s->tiny_buf_.u8;\n memcpy(s->next_out_, *next_in, copy);\n *next_in += copy;\n *available_in -= copy;\n s->total_in_ += copy; /* not actually data input, though */\n s->remaining_metadata_bytes_ -= copy;\n s->available_out_ = copy;\n }\n continue;\n }\n }\n\n return BROTLI_TRUE;\n}\n\nstatic void UpdateSizeHint(BrotliEncoderState* s, size_t available_in) {\n if (s->params.size_hint == 0) {\n uint64_t delta = UnprocessedInputSize(s);\n uint64_t tail = available_in;\n uint32_t limit = 1u << 30;\n uint32_t total;\n if ((delta >= limit) || (tail >= limit) || ((delta + tail) >= limit)) {\n total = limit;\n } else {\n total = (uint32_t)(delta + tail);\n }\n s->params.size_hint = total;\n }\n}\n\nBROTLI_BOOL BrotliEncoderCompressStream(\n BrotliEncoderState* s, BrotliEncoderOperation op, size_t* available_in,\n const uint8_t** next_in, size_t* available_out, uint8_t** next_out,\n size_t* total_out) {\n if (!EnsureInitialized(s)) return BROTLI_FALSE;\n\n /* Unfinished metadata block; check requirements. */\n if (s->remaining_metadata_bytes_ != BROTLI_UINT32_MAX) {\n if (*available_in != s->remaining_metadata_bytes_) return BROTLI_FALSE;\n if (op != BROTLI_OPERATION_EMIT_METADATA) return BROTLI_FALSE;\n }\n\n if (op == BROTLI_OPERATION_EMIT_METADATA) {\n UpdateSizeHint(s, 0); /* First data metablock might be emitted here. */\n return ProcessMetadata(\n s, available_in, next_in, available_out, next_out, total_out);\n }\n\n if (s->stream_state_ == BROTLI_STREAM_METADATA_HEAD ||\n s->stream_state_ == BROTLI_STREAM_METADATA_BODY) {\n return BROTLI_FALSE;\n }\n\n if (s->stream_state_ != BROTLI_STREAM_PROCESSING && *available_in != 0) {\n return BROTLI_FALSE;\n }\n if (s->params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY ||\n s->params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n return BrotliEncoderCompressStreamFast(s, op, available_in, next_in,\n available_out, next_out, total_out);\n }\n while (BROTLI_TRUE) {\n size_t remaining_block_size = RemainingInputBlockSize(s);\n /* Shorten input to flint size. */\n if (s->flint_ >= 0 && remaining_block_size > (size_t)s->flint_) {\n remaining_block_size = (size_t)s->flint_;\n }\n\n if (remaining_block_size != 0 && *available_in != 0) {\n size_t copy_input_size =\n BROTLI_MIN(size_t, remaining_block_size, *available_in);\n CopyInputToRingBuffer(s, copy_input_size, *next_in);\n *next_in += copy_input_size;\n *available_in -= copy_input_size;\n s->total_in_ += copy_input_size;\n if (s->flint_ > 0) s->flint_ = (int8_t)(s->flint_ - (int)copy_input_size);\n continue;\n }\n\n if (InjectFlushOrPushOutput(s, available_out, next_out, total_out)) {\n /* Exit the \"emit flint\" workflow. */\n if (s->flint_ == BROTLI_FLINT_WAITING_FOR_FLUSHING) {\n CheckFlushComplete(s);\n if (s->stream_state_ == BROTLI_STREAM_PROCESSING) {\n s->flint_ = BROTLI_FLINT_DONE;\n }\n }\n continue;\n }\n\n /* Compress data only when internal output buffer is empty, stream is not\n finished and there is no pending flush request. */\n if (s->available_out_ == 0 &&\n s->stream_state_ == BROTLI_STREAM_PROCESSING) {\n if (remaining_block_size == 0 || op != BROTLI_OPERATION_PROCESS) {\n BROTLI_BOOL is_last = TO_BROTLI_BOOL(\n (*available_in == 0) && op == BROTLI_OPERATION_FINISH);\n BROTLI_BOOL force_flush = TO_BROTLI_BOOL(\n (*available_in == 0) && op == BROTLI_OPERATION_FLUSH);\n BROTLI_BOOL result;\n /* Force emitting (uncompressed) piece containing flint. */\n if (!is_last && s->flint_ == 0) {\n s->flint_ = BROTLI_FLINT_WAITING_FOR_FLUSHING;\n force_flush = BROTLI_TRUE;\n }\n UpdateSizeHint(s, *available_in);\n result = EncodeData(s, is_last, force_flush,\n &s->available_out_, &s->next_out_);\n if (!result) return BROTLI_FALSE;\n if (force_flush) s->stream_state_ = BROTLI_STREAM_FLUSH_REQUESTED;\n if (is_last) s->stream_state_ = BROTLI_STREAM_FINISHED;\n continue;\n }\n }\n break;\n }\n CheckFlushComplete(s);\n return BROTLI_TRUE;\n}\n\nBROTLI_BOOL BrotliEncoderIsFinished(BrotliEncoderState* s) {\n return TO_BROTLI_BOOL(s->stream_state_ == BROTLI_STREAM_FINISHED &&\n !BrotliEncoderHasMoreOutput(s));\n}\n\nBROTLI_BOOL BrotliEncoderHasMoreOutput(BrotliEncoderState* s) {\n return TO_BROTLI_BOOL(s->available_out_ != 0);\n}\n\nconst uint8_t* BrotliEncoderTakeOutput(BrotliEncoderState* s, size_t* size) {\n size_t consumed_size = s->available_out_;\n uint8_t* result = s->next_out_;\n if (*size) {\n consumed_size = BROTLI_MIN(size_t, *size, s->available_out_);\n }\n if (consumed_size) {\n s->next_out_ += consumed_size;\n s->available_out_ -= consumed_size;\n s->total_out_ += consumed_size;\n CheckFlushComplete(s);\n *size = consumed_size;\n } else {\n *size = 0;\n result = 0;\n }\n return result;\n}\n\nuint32_t BrotliEncoderVersion(void) {\n return BROTLI_VERSION;\n}\n\nBrotliEncoderPreparedDictionary* BrotliEncoderPrepareDictionary(\n BrotliSharedDictionaryType type, size_t size,\n const uint8_t data[BROTLI_ARRAY_PARAM(size)], int quality,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n ManagedDictionary* managed_dictionary = NULL;\n BROTLI_BOOL type_is_known = BROTLI_FALSE;\n type_is_known |= (type == BROTLI_SHARED_DICTIONARY_RAW);\n#if defined(BROTLI_EXPERIMENTAL)\n type_is_known |= (type == BROTLI_SHARED_DICTIONARY_SERIALIZED);\n#endif /* BROTLI_EXPERIMENTAL */\n if (!type_is_known) {\n return NULL;\n }\n managed_dictionary =\n BrotliCreateManagedDictionary(alloc_func, free_func, opaque);\n if (managed_dictionary == NULL) {\n return NULL;\n }\n if (type == BROTLI_SHARED_DICTIONARY_RAW) {\n managed_dictionary->dictionary = (uint32_t*)CreatePreparedDictionary(\n &managed_dictionary->memory_manager_, data, size);\n }\n#if defined(BROTLI_EXPERIMENTAL)\n if (type == BROTLI_SHARED_DICTIONARY_SERIALIZED) {\n SharedEncoderDictionary* dict = (SharedEncoderDictionary*)BrotliAllocate(\n &managed_dictionary->memory_manager_, sizeof(SharedEncoderDictionary));\n managed_dictionary->dictionary = (uint32_t*)dict;\n if (dict != NULL) {\n BROTLI_BOOL ok = BrotliInitCustomSharedEncoderDictionary(\n &managed_dictionary->memory_manager_, data, size, quality, dict);\n if (!ok) {\n BrotliFree(&managed_dictionary->memory_manager_, dict);\n managed_dictionary->dictionary = NULL;\n }\n }\n }\n#else /* BROTLI_EXPERIMENTAL */\n (void)quality;\n#endif /* BROTLI_EXPERIMENTAL */\n if (managed_dictionary->dictionary == NULL) {\n BrotliDestroyManagedDictionary(managed_dictionary);\n return NULL;\n }\n return (BrotliEncoderPreparedDictionary*)managed_dictionary;\n}\n\nvoid BROTLI_COLD BrotliEncoderDestroyPreparedDictionary(\n BrotliEncoderPreparedDictionary* dictionary) {\n ManagedDictionary* dict = (ManagedDictionary*)dictionary;\n if (!dictionary) return;\n /* First field of dictionary structs. */\n /* Only managed dictionaries are eligible for destruction by this method. */\n if (dict->magic != kManagedDictionaryMagic) {\n return;\n }\n if (dict->dictionary == NULL) {\n /* This should never ever happen. */\n } else if (*dict->dictionary == kLeanPreparedDictionaryMagic) {\n DestroyPreparedDictionary(\n &dict->memory_manager_, (PreparedDictionary*)dict->dictionary);\n } else if (*dict->dictionary == kSharedDictionaryMagic) {\n BrotliCleanupSharedEncoderDictionary(&dict->memory_manager_,\n (SharedEncoderDictionary*)dict->dictionary);\n BrotliFree(&dict->memory_manager_, dict->dictionary);\n } else {\n /* There is also kPreparedDictionaryMagic, but such instances should be\n * constructed and destroyed by different means. */\n }\n dict->dictionary = NULL;\n BrotliDestroyManagedDictionary(dict);\n}\n\nBROTLI_BOOL BROTLI_COLD BrotliEncoderAttachPreparedDictionary(\n BrotliEncoderState* state,\n const BrotliEncoderPreparedDictionary* dictionary) {\n /* First field of dictionary structs */\n const BrotliEncoderPreparedDictionary* dict = dictionary;\n uint32_t magic = *((const uint32_t*)dict);\n SharedEncoderDictionary* current = NULL;\n if (magic == kManagedDictionaryMagic) {\n /* Unwrap managed dictionary. */\n ManagedDictionary* managed_dictionary = (ManagedDictionary*)dict;\n magic = *managed_dictionary->dictionary;\n dict = (BrotliEncoderPreparedDictionary*)managed_dictionary->dictionary;\n }\n current = &state->params.dictionary;\n if (magic == kPreparedDictionaryMagic ||\n magic == kLeanPreparedDictionaryMagic) {\n const PreparedDictionary* prepared = (const PreparedDictionary*)dict;\n if (!AttachPreparedDictionary(¤t->compound, prepared)) {\n return BROTLI_FALSE;\n }\n } else if (magic == kSharedDictionaryMagic) {\n const SharedEncoderDictionary* attached =\n (const SharedEncoderDictionary*)dict;\n BROTLI_BOOL was_default = !current->contextual.context_based &&\n current->contextual.num_dictionaries == 1 &&\n current->contextual.dict[0]->hash_table_words ==\n kStaticDictionaryHashWords &&\n current->contextual.dict[0]->hash_table_lengths ==\n kStaticDictionaryHashLengths;\n BROTLI_BOOL new_default = !attached->contextual.context_based &&\n attached->contextual.num_dictionaries == 1 &&\n attached->contextual.dict[0]->hash_table_words ==\n kStaticDictionaryHashWords &&\n attached->contextual.dict[0]->hash_table_lengths ==\n kStaticDictionaryHashLengths;\n size_t i;\n if (state->is_initialized_) return BROTLI_FALSE;\n current->max_quality =\n BROTLI_MIN(int, current->max_quality, attached->max_quality);\n for (i = 0; i < attached->compound.num_chunks; i++) {\n if (!AttachPreparedDictionary(¤t->compound,\n attached->compound.chunks[i])) {\n return BROTLI_FALSE;\n }\n }\n if (!new_default) {\n if (!was_default) return BROTLI_FALSE;\n /* Copy by value, but then set num_instances_ to 0 because their memory\n is managed by attached, not by current */\n current->contextual = attached->contextual;\n current->contextual.num_instances_ = 0;\n }\n } else {\n return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nsize_t BROTLI_COLD BrotliEncoderEstimatePeakMemoryUsage(int quality, int lgwin,\n size_t input_size) {\n BrotliEncoderParams params;\n size_t memory_manager_slots = BROTLI_ENCODER_MEMORY_MANAGER_SLOTS;\n size_t memory_manager_size = memory_manager_slots * sizeof(void*);\n BrotliEncoderInitParams(¶ms);\n params.quality = quality;\n params.lgwin = lgwin;\n params.size_hint = input_size;\n params.large_window = lgwin > BROTLI_MAX_WINDOW_BITS;\n SanitizeParams(¶ms);\n params.lgblock = ComputeLgBlock(¶ms);\n ChooseHasher(¶ms, ¶ms.hasher);\n if (params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY ||\n params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n size_t state_size = sizeof(BrotliEncoderState);\n size_t block_size = BROTLI_MIN(size_t, input_size, ((size_t)1ul << params.lgwin));\n size_t hash_table_size =\n HashTableSize(MaxHashTableSize(params.quality), block_size);\n size_t hash_size =\n (hash_table_size < (1u << 10)) ? 0 : sizeof(int) * hash_table_size;\n size_t cmdbuf_size = params.quality == FAST_TWO_PASS_COMPRESSION_QUALITY ?\n 5 * BROTLI_MIN(size_t, block_size, 1ul << 17) : 0;\n if (params.quality == FAST_ONE_PASS_COMPRESSION_QUALITY) {\n state_size += sizeof(BrotliOnePassArena);\n } else {\n state_size += sizeof(BrotliTwoPassArena);\n }\n return hash_size + cmdbuf_size + state_size;\n } else {\n size_t short_ringbuffer_size = (size_t)1 << params.lgblock;\n int ringbuffer_bits = ComputeRbBits(¶ms);\n size_t ringbuffer_size = input_size < short_ringbuffer_size ?\n input_size : ((size_t)1u << ringbuffer_bits) + short_ringbuffer_size;\n size_t hash_size[4] = {0};\n size_t metablock_size =\n BROTLI_MIN(size_t, input_size, MaxMetablockSize(¶ms));\n size_t inputblock_size =\n BROTLI_MIN(size_t, input_size, (size_t)1 << params.lgblock);\n size_t cmdbuf_size = metablock_size * 2 + inputblock_size * 6;\n size_t outbuf_size = metablock_size * 2 + 503;\n size_t histogram_size = 0;\n HasherSize(¶ms, BROTLI_TRUE, input_size, hash_size);\n if (params.quality < MIN_QUALITY_FOR_BLOCK_SPLIT) {\n cmdbuf_size = BROTLI_MIN(size_t, cmdbuf_size,\n MAX_NUM_DELAYED_SYMBOLS * sizeof(Command) + inputblock_size * 12);\n }\n if (params.quality >= MIN_QUALITY_FOR_HQ_BLOCK_SPLITTING) {\n /* Only a very rough estimation, based on enwik8. */\n histogram_size = 200 << 20;\n } else if (params.quality >= MIN_QUALITY_FOR_BLOCK_SPLIT) {\n size_t literal_histograms =\n BROTLI_MIN(size_t, metablock_size / 6144, 256);\n size_t command_histograms =\n BROTLI_MIN(size_t, metablock_size / 6144, 256);\n size_t distance_histograms =\n BROTLI_MIN(size_t, metablock_size / 6144, 256);\n histogram_size = literal_histograms * sizeof(HistogramLiteral) +\n command_histograms * sizeof(HistogramCommand) +\n distance_histograms * sizeof(HistogramDistance);\n }\n return (memory_manager_size + ringbuffer_size +\n hash_size[0] + hash_size[1] + hash_size[2] + hash_size[3] +\n cmdbuf_size +\n outbuf_size +\n histogram_size);\n }\n}\nsize_t BROTLI_COLD BrotliEncoderGetPreparedDictionarySize(\n const BrotliEncoderPreparedDictionary* prepared_dictionary) {\n /* First field of dictionary structs */\n const BrotliEncoderPreparedDictionary* prepared = prepared_dictionary;\n uint32_t magic = *((const uint32_t*)prepared);\n size_t overhead = 0;\n if (magic == kManagedDictionaryMagic) {\n const ManagedDictionary* managed = (const ManagedDictionary*)prepared;\n overhead = sizeof(ManagedDictionary);\n magic = *managed->dictionary;\n prepared = (const BrotliEncoderPreparedDictionary*)managed->dictionary;\n }\n\n if (magic == kPreparedDictionaryMagic) {\n const PreparedDictionary* dictionary =\n (const PreparedDictionary*)prepared;\n /* Keep in sync with step 3 of CreatePreparedDictionary */\n return sizeof(PreparedDictionary) + dictionary->source_size +\n (sizeof(uint32_t) << dictionary->slot_bits) +\n (sizeof(uint16_t) << dictionary->bucket_bits) +\n (sizeof(uint32_t) * dictionary->num_items) + overhead;\n } else if (magic == kLeanPreparedDictionaryMagic) {\n const PreparedDictionary* dictionary =\n (const PreparedDictionary*)prepared;\n /* Keep in sync with step 3 of CreatePreparedDictionary */\n return sizeof(PreparedDictionary) + sizeof(uint8_t*) +\n (sizeof(uint32_t) << dictionary->slot_bits) +\n (sizeof(uint16_t) << dictionary->bucket_bits) +\n (sizeof(uint32_t) * dictionary->num_items) + overhead;\n } else if (magic == kSharedDictionaryMagic) {\n const SharedEncoderDictionary* dictionary =\n (const SharedEncoderDictionary*)prepared;\n const CompoundDictionary* compound = &dictionary->compound;\n const ContextualEncoderDictionary* contextual = &dictionary->contextual;\n size_t result = sizeof(*dictionary);\n size_t i;\n size_t num_instances;\n const BrotliEncoderDictionary* instances;\n for (i = 0; i < compound->num_prepared_instances_; i++) {\n size_t size = BrotliEncoderGetPreparedDictionarySize(\n (const BrotliEncoderPreparedDictionary*)\n compound->prepared_instances_[i]);\n if (!size) return 0; /* error */\n result += size;\n }\n if (contextual->context_based) {\n num_instances = contextual->num_instances_;\n instances = contextual->instances_;\n result += sizeof(*instances) * num_instances;\n } else {\n num_instances = 1;\n instances = &contextual->instance_;\n }\n for (i = 0; i < num_instances; i++) {\n const BrotliEncoderDictionary* dict = &instances[i];\n result += dict->trie.pool_capacity * sizeof(BrotliTrieNode);\n if (dict->hash_table_data_words_) {\n result += sizeof(kStaticDictionaryHashWords);\n }\n if (dict->hash_table_data_lengths_) {\n result += sizeof(kStaticDictionaryHashLengths);\n }\n if (dict->buckets_data_) {\n result += sizeof(*dict->buckets_data_) * dict->buckets_alloc_size_;\n }\n if (dict->dict_words_data_) {\n result += sizeof(*dict->dict_words) * dict->dict_words_alloc_size_;\n }\n if (dict->words_instance_) {\n result += sizeof(*dict->words_instance_);\n /* data_size not added here: it is never allocated by the\n SharedEncoderDictionary, instead it always points to the file\n already loaded in memory. So if the caller wants to include\n this memory as well, add the size of the loaded dictionary\n file to this. */\n }\n }\n return result + overhead;\n }\n return 0; /* error */\n}\n\n#if defined(BROTLI_TEST)\nsize_t BrotliMakeUncompressedStreamForTest(const uint8_t*, size_t, uint8_t*);\nsize_t BrotliMakeUncompressedStreamForTest(\n const uint8_t* input, size_t input_size, uint8_t* output) {\n return MakeUncompressedStream(input, input_size, output);\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/encoder_dict.c", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"encoder_dict.h\"\n\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \n#include \"../common/shared_dictionary_internal.h\"\n#include \"../common/transform.h\"\n#include \n#include \"compound_dictionary.h\"\n#include \"dictionary_hash.h\"\n#include \"hash_base.h\"\n#include \"hash.h\"\n#include \"memory.h\"\n#include \"quality.h\"\n#include \"static_dict_lut.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define NUM_HASH_BITS 15u\n#define NUM_HASH_BUCKETS (1u << NUM_HASH_BITS)\n\nstatic void BrotliTrieInit(BrotliTrie* trie) {\n trie->pool_capacity = 0;\n trie->pool_size = 0;\n trie->pool = 0;\n\n /* Set up the root node */\n trie->root.single = 0;\n trie->root.len_ = 0;\n trie->root.idx_ = 0;\n trie->root.sub = 0;\n}\n\nstatic void BrotliTrieFree(MemoryManager* m, BrotliTrie* trie) {\n BrotliFree(m, trie->pool);\n}\n\n/* Initializes to RFC 7932 static dictionary / transforms. */\nstatic void InitEncoderDictionary(BrotliEncoderDictionary* dict) {\n dict->words = BrotliGetDictionary();\n dict->num_transforms = (uint32_t)BrotliGetTransforms()->num_transforms;\n\n dict->hash_table_words = kStaticDictionaryHashWords;\n dict->hash_table_lengths = kStaticDictionaryHashLengths;\n dict->buckets = kStaticDictionaryBuckets;\n dict->dict_words = kStaticDictionaryWords;\n\n dict->cutoffTransformsCount = kCutoffTransformsCount;\n dict->cutoffTransforms = kCutoffTransforms;\n\n dict->parent = 0;\n\n dict->hash_table_data_words_ = 0;\n dict->hash_table_data_lengths_ = 0;\n dict->buckets_alloc_size_ = 0;\n dict->buckets_data_ = 0;\n dict->dict_words_alloc_size_ = 0;\n dict->dict_words_data_ = 0;\n dict->words_instance_ = 0;\n dict->has_words_heavy = BROTLI_FALSE;\n BrotliTrieInit(&dict->trie);\n}\n\nstatic void BrotliDestroyEncoderDictionary(MemoryManager* m,\n BrotliEncoderDictionary* dict) {\n BrotliFree(m, dict->hash_table_data_words_);\n BrotliFree(m, dict->hash_table_data_lengths_);\n BrotliFree(m, dict->buckets_data_);\n BrotliFree(m, dict->dict_words_data_);\n BrotliFree(m, dict->words_instance_);\n BrotliTrieFree(m, &dict->trie);\n}\n\n#if defined(BROTLI_EXPERIMENTAL)\n/* Word length must be at least 4 bytes */\nstatic uint32_t Hash(const uint8_t* data, int bits) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return h >> (32 - bits);\n}\n\n/* Theoretical max possible word size after transform */\n#define kTransformedBufferSize \\\n (256 + 256 + SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH)\n\n/* To be safe buffer must have at least kTransformedBufferSize */\nstatic void TransformedDictionaryWord(uint32_t word_idx, int len, int transform,\n const BrotliTransforms* transforms,\n const BrotliEncoderDictionary* dict,\n uint8_t* buffer, size_t* size) {\n const uint8_t* dict_word = &dict->words->data[\n dict->words->offsets_by_length[len] + (uint32_t)len * word_idx];\n *size = (size_t)BrotliTransformDictionaryWord(buffer, dict_word, len,\n transforms, transform);\n}\n\nstatic DictWord MakeDictWord(uint8_t len, uint8_t transform, uint16_t idx) {\n DictWord result;\n result.len = len;\n result.transform = transform;\n result.idx = idx;\n return result;\n}\n\nstatic uint32_t BrotliTrieAlloc(MemoryManager* m, size_t num, BrotliTrie* trie,\n BrotliTrieNode** keep) {\n uint32_t result;\n uint32_t keep_index = 0;\n if (keep && *keep != &trie->root) {\n /* Optional node to keep, since address may change after re-allocating */\n keep_index = (uint32_t)(*keep - trie->pool);\n }\n if (trie->pool_size == 0) {\n /* Have a placeholder node in the front. We do not want the result to be 0,\n it must be at least 1, 0 represents \"null pointer\" */\n trie->pool_size = 1;\n }\n BROTLI_ENSURE_CAPACITY(m, BrotliTrieNode, trie->pool, trie->pool_capacity,\n trie->pool_size + num);\n if (BROTLI_IS_OOM(m)) return 0;\n /* Init the new nodes to empty */\n memset(trie->pool + trie->pool_size, 0, sizeof(*trie->pool) * num);\n result = (uint32_t)trie->pool_size;\n trie->pool_size += num;\n if (keep && *keep != &trie->root) {\n *keep = trie->pool + keep_index;\n }\n return result;\n}\n\n/**\n * len and idx: payload for last node\n * word, size: the string\n * index: position in the string\n */\nstatic BROTLI_BOOL BrotliTrieNodeAdd(MemoryManager* m, uint8_t len,\n uint32_t idx, const uint8_t* word, size_t size, int index,\n BrotliTrieNode* node, BrotliTrie* trie) {\n BrotliTrieNode* child = 0;\n uint8_t c;\n if ((size_t)index == size) {\n if (!node->len_ || idx < node->idx_) {\n node->len_ = len;\n node->idx_ = idx;\n }\n return BROTLI_TRUE;\n }\n c = word[index];\n if (node->single && c != node->c) {\n BrotliTrieNode old = trie->pool[node->sub];\n uint32_t new_nodes = BrotliTrieAlloc(m, 32, trie, &node);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n node->single = 0;\n node->sub = new_nodes;\n trie->pool[node->sub + (node->c >> 4)].sub = new_nodes + 16;\n trie->pool[trie->pool[node->sub + (node->c >> 4)].sub + (node->c & 15)] =\n old;\n }\n if (!node->sub) {\n uint32_t new_node = BrotliTrieAlloc(m, 1, trie, &node);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n node->single = 1;\n node->c = c;\n node->sub = new_node;\n }\n if (node->single) {\n child = &trie->pool[node->sub];\n } else {\n if (!trie->pool[node->sub + (c >> 4)].sub) {\n uint32_t new_nodes = BrotliTrieAlloc(m, 16, trie, &node);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n trie->pool[node->sub + (c >> 4)].sub = new_nodes;\n }\n child = &trie->pool[trie->pool[node->sub + (c >> 4)].sub + (c & 15)];\n }\n return BrotliTrieNodeAdd(m, len, idx, word, size, index + 1, child, trie);\n}\n\nstatic BROTLI_BOOL BrotliTrieAdd(MemoryManager* m, uint8_t len, uint32_t idx,\n const uint8_t* word, size_t size, BrotliTrie* trie) {\n return BrotliTrieNodeAdd(m, len, idx, word, size, 0, &trie->root, trie);\n}\n\nconst BrotliTrieNode* BrotliTrieSub(const BrotliTrie* trie,\n const BrotliTrieNode* node, uint8_t c) {\n BrotliTrieNode* temp_node;\n if (node->single) {\n if (node->c == c) return &trie->pool[node->sub];\n return 0;\n }\n if (!node->sub) return 0;\n temp_node = &trie->pool[node->sub + (c >> 4)];\n if (!temp_node->sub) return 0;\n return &trie->pool[temp_node->sub + (c & 15)];\n}\n\nstatic const BrotliTrieNode* BrotliTrieFind(const BrotliTrie* trie,\n const uint8_t* word, size_t size) {\n const BrotliTrieNode* node = &trie->root;\n size_t i;\n for (i = 0; i < size; i++) {\n node = BrotliTrieSub(trie, node, word[i]);\n if (!node) return 0;\n }\n return node;\n}\n\nstatic BROTLI_BOOL BuildDictionaryLut(MemoryManager* m,\n const BrotliTransforms* transforms,\n BrotliEncoderDictionary* dict) {\n uint32_t i;\n DictWord* dict_words;\n uint16_t* buckets;\n DictWord** words_by_hash;\n size_t* words_by_hash_size;\n size_t* words_by_hash_capacity;\n BrotliTrie dedup;\n uint8_t word[kTransformedBufferSize];\n size_t word_size;\n size_t total = 0;\n uint8_t l;\n uint16_t idx;\n\n BrotliTrieInit(&dedup);\n\n words_by_hash = (DictWord**)BrotliAllocate(m,\n sizeof(*words_by_hash) * NUM_HASH_BUCKETS);\n words_by_hash_size = (size_t*)BrotliAllocate(m,\n sizeof(*words_by_hash_size) * NUM_HASH_BUCKETS);\n words_by_hash_capacity = (size_t*)BrotliAllocate(m,\n sizeof(*words_by_hash_capacity) * NUM_HASH_BUCKETS);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n memset(words_by_hash, 0, sizeof(*words_by_hash) * NUM_HASH_BUCKETS);\n memset(words_by_hash_size, 0, sizeof(*words_by_hash_size) * NUM_HASH_BUCKETS);\n memset(words_by_hash_capacity, 0,\n sizeof(*words_by_hash_capacity) * NUM_HASH_BUCKETS);\n\n if (transforms->num_transforms > 0) {\n for (l = SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH;\n l <= SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH; ++l) {\n uint16_t n = dict->words->size_bits_by_length[l] ?\n (uint16_t)(1 << dict->words->size_bits_by_length[l]) : 0u;\n for (idx = 0; idx < n; ++idx) {\n uint32_t key;\n /* First transform (usually identity) */\n TransformedDictionaryWord(idx, l, 0, transforms, dict, word,\n &word_size);\n /* Cannot hash words smaller than 4 bytes */\n if (word_size < 4) {\n /* Break instead of continue, all next words of this length will have\n same length after transform */\n break;\n }\n if (!BrotliTrieAdd(m, 0, idx, word, word_size, &dedup)) {\n return BROTLI_FALSE;\n }\n key = Hash(word, NUM_HASH_BITS);\n BROTLI_ENSURE_CAPACITY_APPEND(m, DictWord, words_by_hash[key],\n words_by_hash_capacity[key], words_by_hash_size[key],\n MakeDictWord(l, 0, idx));\n ++total;\n }\n }\n }\n\n /* These LUT transforms only supported if no custom transforms. This is\n ok, we will use the heavy trie instead. */\n if (transforms == BrotliGetTransforms()) {\n for (l = SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH;\n l <= SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH; ++l) {\n uint16_t n = dict->words->size_bits_by_length[l] ?\n (uint16_t)(1 << dict->words->size_bits_by_length[l]) : 0u;\n for (idx = 0; idx < n; ++idx) {\n int k;\n BROTLI_BOOL is_ascii = BROTLI_TRUE;\n size_t offset = dict->words->offsets_by_length[l] + (size_t)l * idx;\n const uint8_t* data = &dict->words->data[offset];\n for (k = 0; k < l; ++k) {\n if (data[k] >= 128) is_ascii = BROTLI_FALSE;\n }\n if (data[0] < 128) {\n int transform = 9; /* {empty, uppercase first, empty} */\n uint32_t ix = idx + (uint32_t)transform * n;\n const BrotliTrieNode* it;\n TransformedDictionaryWord(idx, l, transform, transforms,\n dict, word, &word_size);\n it = BrotliTrieFind(&dedup, word, word_size);\n if (!it || it->idx_ > ix) {\n uint32_t key = Hash(word, NUM_HASH_BITS);\n if (!BrotliTrieAdd(m, 0, ix, word, word_size, &dedup)) {\n return BROTLI_FALSE;\n }\n BROTLI_ENSURE_CAPACITY_APPEND(m, DictWord, words_by_hash[key],\n words_by_hash_capacity[key], words_by_hash_size[key],\n MakeDictWord(l, BROTLI_TRANSFORM_UPPERCASE_FIRST, idx));\n ++total;\n }\n }\n if (is_ascii) {\n int transform = 44; /* {empty, uppercase all, empty} */\n uint32_t ix = idx + (uint32_t)transform * n;\n const BrotliTrieNode* it;\n TransformedDictionaryWord(idx, l, transform, transforms,\n dict, word, &word_size);\n it = BrotliTrieFind(&dedup, word, word_size);\n if (!it || it->idx_ > ix) {\n uint32_t key = Hash(word, NUM_HASH_BITS);\n if (!BrotliTrieAdd(m, 0, ix, word, word_size, &dedup)) {\n return BROTLI_FALSE;\n }\n BROTLI_ENSURE_CAPACITY_APPEND(m, DictWord, words_by_hash[key],\n words_by_hash_capacity[key], words_by_hash_size[key],\n MakeDictWord(l, BROTLI_TRANSFORM_UPPERCASE_ALL, idx));\n ++total;\n }\n }\n }\n }\n }\n\n dict_words = (DictWord*)BrotliAllocate(m,\n sizeof(*dict->dict_words) * (total + 1));\n buckets = (uint16_t*)BrotliAllocate(m,\n sizeof(*dict->buckets) * NUM_HASH_BUCKETS);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n dict->dict_words_alloc_size_ = total + 1;\n dict->dict_words = dict->dict_words_data_ = dict_words;\n dict->buckets_alloc_size_ = NUM_HASH_BUCKETS;\n dict->buckets = dict->buckets_data_ = buckets;\n\n /* Unused; makes offsets start from 1. */\n dict_words[0] = MakeDictWord(0, 0, 0);\n total = 1;\n for (i = 0; i < NUM_HASH_BUCKETS; ++i) {\n size_t num_words = words_by_hash_size[i];\n if (num_words > 0) {\n buckets[i] = (uint16_t)(total);\n memcpy(&dict_words[total], &words_by_hash[i][0],\n sizeof(dict_words[0]) * num_words);\n total += num_words;\n dict_words[total - 1].len |= 0x80;\n } else {\n buckets[i] = 0;\n }\n }\n\n for (i = 0; i < NUM_HASH_BUCKETS; ++i) {\n BrotliFree(m, words_by_hash[i]);\n }\n BrotliFree(m, words_by_hash);\n BrotliFree(m, words_by_hash_size);\n BrotliFree(m, words_by_hash_capacity);\n BrotliTrieFree(m, &dedup);\n\n return BROTLI_TRUE;\n}\n\nstatic void BuildDictionaryHashTable(uint16_t* hash_table_words,\n uint8_t* hash_table_lengths, const BrotliDictionary* dict) {\n int j, len;\n /* The order of the loops is such that in case of collision, words with\n shorter length are preferred, and in case of same length, words with\n smaller index. There is only a single word per bucket. */\n /* TODO(lode): consider adding optional user-supplied frequency_map to use\n for preferred words instead, this can make the encoder better for\n quality 9 and below without affecting the decoder */\n memset(hash_table_words, 0, sizeof(kStaticDictionaryHashWords));\n memset(hash_table_lengths, 0, sizeof(kStaticDictionaryHashLengths));\n for (len = SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH;\n len >= SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH; --len) {\n const size_t num_words = dict->size_bits_by_length[len] ?\n (1u << dict->size_bits_by_length[len]) : 0;\n for (j = (int)num_words - 1; j >= 0; --j) {\n size_t offset = dict->offsets_by_length[len] +\n (size_t)len * (size_t)j;\n const uint8_t* word = &dict->data[offset];\n const uint32_t key = Hash(word, 14);\n int idx = (int)(key << 1) + (len < 8 ? 1 : 0);\n BROTLI_DCHECK(idx < (int)NUM_HASH_BUCKETS);\n hash_table_words[idx] = (uint16_t)j;\n hash_table_lengths[idx] = (uint8_t)len;\n }\n }\n}\n\nstatic BROTLI_BOOL GenerateWordsHeavy(MemoryManager* m,\n const BrotliTransforms* transforms,\n BrotliEncoderDictionary* dict) {\n int i, j, l;\n for (j = (int)transforms->num_transforms - 1; j >= 0 ; --j) {\n for (l = 0; l < 32; l++) {\n int num = (int)((1u << dict->words->size_bits_by_length[l]) & ~1u);\n for (i = 0; i < num; i++) {\n uint8_t transformed[kTransformedBufferSize];\n size_t size;\n TransformedDictionaryWord(\n (uint32_t)i, l, j, transforms, dict, transformed, &size);\n if (size < 4) continue;\n if (!BrotliTrieAdd(m, (uint8_t)l, (uint32_t)(i + num * j),\n transformed, size, &dict->trie)) {\n return BROTLI_FALSE;\n }\n }\n }\n }\n return BROTLI_TRUE;\n}\n\n/* Computes cutoffTransformsCount (in count) and cutoffTransforms (in data) for\n the custom transforms, where possible within the limits of the\n cutoffTransforms encoding. The fast encoder uses this to do fast lookup for\n transforms that remove the N last characters (OmitLast). */\nstatic void ComputeCutoffTransforms(\n const BrotliTransforms* transforms,\n uint32_t* count, uint64_t* data) {\n int i;\n /* The encoding in a 64-bit integer of transform N in the data is: (N << 2) +\n ((cutoffTransforms >> (N * 6)) & 0x3F), so for example the identity\n transform code must be 0-63, for N=1 the transform code must be 4-67, ...,\n for N=9 it must be 36-99.\n TODO(lode): consider a simple flexible uint8_t[10] instead of the uint64_t\n for the cutoff transforms, so that shared dictionaries can have the\n OmitLast transforms anywhere without loss. */\n *count = 0;\n *data = 0;\n for (i = 0; i < BROTLI_TRANSFORMS_MAX_CUT_OFF + 1; i++) {\n int idx = transforms->cutOffTransforms[i];\n if (idx == -1) break; /* Not found */\n if (idx < (i << 2)) break; /* Too small for the encoding */\n if (idx >= (i << 2) + 64) break; /* Too large for the encoding */\n (*count)++;\n *data |= (uint64_t)(((uint64_t)idx -\n ((uint64_t)i << 2u)) << ((uint64_t)i * 6u));\n }\n}\n\nstatic BROTLI_BOOL ComputeDictionary(MemoryManager* m, int quality,\n const BrotliTransforms* transforms,\n BrotliEncoderDictionary* current) {\n int default_words = current->words == BrotliGetDictionary();\n int default_transforms = transforms == BrotliGetTransforms();\n\n if (default_words && default_transforms) {\n /* hashes are already set to Brotli defaults */\n return BROTLI_TRUE;\n }\n\n current->hash_table_data_words_ = (uint16_t*)BrotliAllocate(\n m, sizeof(kStaticDictionaryHashWords));\n current->hash_table_data_lengths_ = (uint8_t*)BrotliAllocate(\n m, sizeof(kStaticDictionaryHashLengths));\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n current->hash_table_words = current->hash_table_data_words_;\n current->hash_table_lengths = current->hash_table_data_lengths_;\n\n BuildDictionaryHashTable(current->hash_table_data_words_,\n current->hash_table_data_lengths_, current->words);\n\n ComputeCutoffTransforms(transforms,\n ¤t->cutoffTransformsCount, ¤t->cutoffTransforms);\n\n /* Only compute the data for slow encoder if the requested quality is high\n enough to need it */\n if (quality >= ZOPFLIFICATION_QUALITY) {\n if (!BuildDictionaryLut(m, transforms, current)) return BROTLI_FALSE;\n\n /* For the built-in Brotli transforms, there is a hard-coded function to\n handle all transforms, but for custom transforms, we use the following\n large hammer instead */\n current->has_words_heavy = !default_transforms;\n if (current->has_words_heavy) {\n if (!GenerateWordsHeavy(m, transforms, current)) return BROTLI_FALSE;\n }\n }\n\n return BROTLI_TRUE;\n}\n#endif /* BROTLI_EXPERIMENTAL */\n\nvoid BrotliInitSharedEncoderDictionary(SharedEncoderDictionary* dict) {\n dict->magic = kSharedDictionaryMagic;\n\n dict->compound.num_chunks = 0;\n dict->compound.total_size = 0;\n dict->compound.chunk_offsets[0] = 0;\n dict->compound.num_prepared_instances_ = 0;\n\n dict->contextual.context_based = 0;\n dict->contextual.num_dictionaries = 1;\n dict->contextual.instances_ = 0;\n dict->contextual.num_instances_ = 1; /* The instance_ field */\n dict->contextual.dict[0] = &dict->contextual.instance_;\n InitEncoderDictionary(&dict->contextual.instance_);\n dict->contextual.instance_.parent = &dict->contextual;\n\n dict->max_quality = BROTLI_MAX_QUALITY;\n}\n\n#if defined(BROTLI_EXPERIMENTAL)\n/* TODO(eustas): make sure that tooling will warn user if not all the cutoff\n transforms are available (for low-quality encoder). */\nstatic BROTLI_BOOL InitCustomSharedEncoderDictionary(\n MemoryManager* m, const BrotliSharedDictionary* decoded_dict,\n int quality, SharedEncoderDictionary* dict) {\n ContextualEncoderDictionary* contextual;\n CompoundDictionary* compound;\n BrotliEncoderDictionary* instances;\n int i;\n BrotliInitSharedEncoderDictionary(dict);\n\n contextual = &dict->contextual;\n compound = &dict->compound;\n\n for (i = 0; i < (int)decoded_dict->num_prefix; i++) {\n PreparedDictionary* prepared = CreatePreparedDictionary(m,\n decoded_dict->prefix[i], decoded_dict->prefix_size[i]);\n AttachPreparedDictionary(compound, prepared);\n /* remember for cleanup */\n compound->prepared_instances_[\n compound->num_prepared_instances_++] = prepared;\n }\n\n dict->max_quality = quality;\n contextual->context_based = decoded_dict->context_based;\n if (decoded_dict->context_based) {\n memcpy(contextual->context_map, decoded_dict->context_map,\n SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS);\n }\n\n contextual->num_dictionaries = decoded_dict->num_dictionaries;\n contextual->num_instances_ = decoded_dict->num_dictionaries;\n if (contextual->num_instances_ == 1) {\n instances = &contextual->instance_;\n } else {\n contextual->instances_ = (BrotliEncoderDictionary*)\n BrotliAllocate(m, sizeof(*contextual->instances_) *\n contextual->num_instances_);\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n instances = contextual->instances_;\n }\n for (i = 0; i < (int)contextual->num_instances_; i++) {\n BrotliEncoderDictionary* current = &instances[i];\n InitEncoderDictionary(current);\n current->parent = &dict->contextual;\n if (decoded_dict->words[i] == BrotliGetDictionary()) {\n current->words = BrotliGetDictionary();\n } else {\n current->words_instance_ = (BrotliDictionary*)BrotliAllocate(\n m, sizeof(BrotliDictionary));\n if (BROTLI_IS_OOM(m)) return BROTLI_FALSE;\n *current->words_instance_ = *decoded_dict->words[i];\n current->words = current->words_instance_;\n }\n current->num_transforms =\n (uint32_t)decoded_dict->transforms[i]->num_transforms;\n if (!ComputeDictionary(\n m, quality, decoded_dict->transforms[i], current)) {\n return BROTLI_FALSE;\n }\n\n contextual->dict[i] = current;\n }\n\n return BROTLI_TRUE; /* success */\n}\n\nBROTLI_BOOL BrotliInitCustomSharedEncoderDictionary(\n MemoryManager* m, const uint8_t* encoded_dict, size_t size,\n int quality, SharedEncoderDictionary* dict) {\n BROTLI_BOOL success = BROTLI_FALSE;\n BrotliSharedDictionary* decoded_dict = BrotliSharedDictionaryCreateInstance(\n m->alloc_func, m->free_func, m->opaque);\n if (!decoded_dict) { /* OOM */\n return BROTLI_FALSE;\n }\n success = BrotliSharedDictionaryAttach(\n decoded_dict, BROTLI_SHARED_DICTIONARY_SERIALIZED, size, encoded_dict);\n if (success) {\n success = InitCustomSharedEncoderDictionary(m,\n decoded_dict, quality, dict);\n }\n BrotliSharedDictionaryDestroyInstance(decoded_dict);\n return success;\n}\n#endif /* BROTLI_EXPERIMENTAL */\n\nvoid BrotliCleanupSharedEncoderDictionary(MemoryManager* m,\n SharedEncoderDictionary* dict) {\n size_t i;\n for (i = 0; i < dict->compound.num_prepared_instances_; i++) {\n DestroyPreparedDictionary(m,\n (PreparedDictionary*)dict->compound.prepared_instances_[i]);\n }\n if (dict->contextual.num_instances_ == 1) {\n BrotliDestroyEncoderDictionary(m, &dict->contextual.instance_);\n } else if (dict->contextual.num_instances_ > 1) {\n for (i = 0; i < dict->contextual.num_instances_; i++) {\n BrotliDestroyEncoderDictionary(m, &dict->contextual.instances_[i]);\n }\n BrotliFree(m, dict->contextual.instances_);\n }\n}\n\nManagedDictionary* BrotliCreateManagedDictionary(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n ManagedDictionary* result = (ManagedDictionary*)BrotliBootstrapAlloc(\n sizeof(ManagedDictionary), alloc_func, free_func, opaque);\n if (result == NULL) return NULL;\n\n result->magic = kManagedDictionaryMagic;\n BrotliInitMemoryManager(\n &result->memory_manager_, alloc_func, free_func, opaque);\n result->dictionary = NULL;\n\n return result;\n}\n\nvoid BrotliDestroyManagedDictionary(ManagedDictionary* dictionary) {\n if (!dictionary) return;\n BrotliBootstrapFree(dictionary, &dictionary->memory_manager_);\n}\n\n/* Escalate internal functions visibility; for testing purposes only. */\n#if defined(BROTLI_TEST)\nvoid BrotliInitEncoderDictionaryForTest(BrotliEncoderDictionary*);\nvoid BrotliInitEncoderDictionaryForTest(BrotliEncoderDictionary* d) {\n InitEncoderDictionary(d);\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/encoder_dict.h", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#ifndef BROTLI_ENC_ENCODER_DICT_H_\n#define BROTLI_ENC_ENCODER_DICT_H_\n\n#include \"../common/dictionary.h\"\n#include \n#include \"../common/platform.h\"\n#include \"compound_dictionary.h\"\n#include \"memory.h\"\n#include \"static_dict_lut.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/*\nDictionary hierarchy for Encoder:\n-SharedEncoderDictionary\n--CompoundDictionary\n---PreparedDictionary [up to 15x]\n = prefix dictionary with precomputed hashes\n--ContextualEncoderDictionary\n---BrotliEncoderDictionary [up to 64x]\n = for each context, precomputed static dictionary with words + transforms\n\nDictionary hierarchy from common: similar, but without precomputed hashes\n-BrotliSharedDictionary\n--BrotliDictionary [up to 64x]\n--BrotliTransforms [up to 64x]\n--const uint8_t* prefix [up to 15x]: compound dictionaries\n*/\n\ntypedef struct BrotliTrieNode {\n uint8_t single; /* if 1, sub is a single node for c instead of 256 */\n uint8_t c;\n uint8_t len_; /* untransformed length */\n uint32_t idx_; /* word index + num words * transform index */\n uint32_t sub; /* index of sub node(s) in the pool */\n} BrotliTrieNode;\n\ntypedef struct BrotliTrie {\n BrotliTrieNode* pool;\n size_t pool_capacity;\n size_t pool_size;\n BrotliTrieNode root;\n} BrotliTrie;\n\n#if defined(BROTLI_EXPERIMENTAL)\nBROTLI_INTERNAL const BrotliTrieNode* BrotliTrieSub(const BrotliTrie* trie,\n const BrotliTrieNode* node, uint8_t c);\n#endif /* BROTLI_EXPERIMENTAL */\n\n/* Dictionary data (words and transforms) for 1 possible context */\ntypedef struct BrotliEncoderDictionary {\n const BrotliDictionary* words;\n uint32_t num_transforms;\n\n /* cut off for fast encoder */\n uint32_t cutoffTransformsCount;\n uint64_t cutoffTransforms;\n\n /* from dictionary_hash.h, for fast encoder */\n const uint16_t* hash_table_words;\n const uint8_t* hash_table_lengths;\n\n /* from static_dict_lut.h, for slow encoder */\n const uint16_t* buckets;\n const DictWord* dict_words;\n /* Heavy version, for use by slow encoder when there are custom transforms.\n Contains every possible transformed dictionary word in a trie. It encodes\n about as fast as the non-heavy encoder but consumes a lot of memory and\n takes time to build. */\n BrotliTrie trie;\n BROTLI_BOOL has_words_heavy;\n\n /* Reference to other dictionaries. */\n const struct ContextualEncoderDictionary* parent;\n\n /* Allocated memory, used only when not using the Brotli defaults */\n uint16_t* hash_table_data_words_;\n uint8_t* hash_table_data_lengths_;\n size_t buckets_alloc_size_;\n uint16_t* buckets_data_;\n size_t dict_words_alloc_size_;\n DictWord* dict_words_data_;\n BrotliDictionary* words_instance_;\n} BrotliEncoderDictionary;\n\n/* Dictionary data for all 64 contexts */\ntypedef struct ContextualEncoderDictionary {\n BROTLI_BOOL context_based;\n uint8_t num_dictionaries;\n uint8_t context_map[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n const BrotliEncoderDictionary* dict[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];\n\n /* If num_instances_ is 1, instance_ is used, else dynamic allocation with\n instances_ is used. */\n size_t num_instances_;\n BrotliEncoderDictionary instance_;\n BrotliEncoderDictionary* instances_;\n} ContextualEncoderDictionary;\n\ntypedef struct SharedEncoderDictionary {\n /* Magic value to distinguish this struct from PreparedDictionary for\n certain external usages. */\n uint32_t magic;\n\n /* LZ77 prefix, compound dictionary */\n CompoundDictionary compound;\n\n /* Custom static dictionary (optionally context-based) */\n ContextualEncoderDictionary contextual;\n\n /* The maximum quality the dictionary was computed for */\n int max_quality;\n} SharedEncoderDictionary;\n\ntypedef struct ManagedDictionary {\n uint32_t magic;\n MemoryManager memory_manager_;\n uint32_t* dictionary;\n} ManagedDictionary;\n\n/* Initializes to the brotli built-in dictionary */\nBROTLI_INTERNAL void BrotliInitSharedEncoderDictionary(\n SharedEncoderDictionary* dict);\n\n#if defined(BROTLI_EXPERIMENTAL)\n/* Initializes to shared dictionary that will be parsed from\n encoded_dict. Requires that you keep the encoded_dict buffer\n around, parts of data will point to it. */\nBROTLI_INTERNAL BROTLI_BOOL BrotliInitCustomSharedEncoderDictionary(\n MemoryManager* m, const uint8_t* encoded_dict, size_t size,\n int quality, SharedEncoderDictionary* dict);\n#endif /* BROTLI_EXPERIMENTAL */\n\nBROTLI_INTERNAL void BrotliCleanupSharedEncoderDictionary(\n MemoryManager* m, SharedEncoderDictionary* dict);\n\nBROTLI_INTERNAL ManagedDictionary* BrotliCreateManagedDictionary(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\n\nBROTLI_INTERNAL void BrotliDestroyManagedDictionary(\n ManagedDictionary* dictionary);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_ENCODER_DICT_H_ */\n" }, { "path": "c/enc/entropy_encode.c", "content": "/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Entropy encoding (Huffman) utilities. */\n\n#include \"entropy_encode.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nconst BROTLI_MODEL(\"small\") size_t kBrotliShellGaps[] = {132, 57, 23, 10, 4, 1};\n\nBROTLI_BOOL BrotliSetDepth(\n int p0, HuffmanTree* pool, uint8_t* depth, int max_depth) {\n int stack[16];\n int level = 0;\n int p = p0;\n BROTLI_DCHECK(max_depth <= 15);\n stack[0] = -1;\n while (BROTLI_TRUE) {\n if (pool[p].index_left_ >= 0) {\n level++;\n if (level > max_depth) return BROTLI_FALSE;\n stack[level] = pool[p].index_right_or_value_;\n p = pool[p].index_left_;\n continue;\n } else {\n depth[pool[p].index_right_or_value_] = (uint8_t)level;\n }\n while (level >= 0 && stack[level] == -1) level--;\n if (level < 0) return BROTLI_TRUE;\n p = stack[level];\n stack[level] = -1;\n }\n}\n\n/* Sort the root nodes, least popular first. */\nstatic BROTLI_INLINE BROTLI_BOOL SortHuffmanTree(\n const HuffmanTree* v0, const HuffmanTree* v1) {\n if (v0->total_count_ != v1->total_count_) {\n return TO_BROTLI_BOOL(v0->total_count_ < v1->total_count_);\n }\n return TO_BROTLI_BOOL(v0->index_right_or_value_ > v1->index_right_or_value_);\n}\n\n/* This function will create a Huffman tree.\n\n The catch here is that the tree cannot be arbitrarily deep.\n Brotli specifies a maximum depth of 15 bits for \"code trees\"\n and 7 bits for \"code length code trees.\"\n\n count_limit is the value that is to be faked as the minimum value\n and this minimum value is raised until the tree matches the\n maximum length requirement.\n\n This algorithm is not of excellent performance for very long data blocks,\n especially when population counts are longer than 2**tree_limit, but\n we are not planning to use this with extremely long blocks.\n\n See http://en.wikipedia.org/wiki/Huffman_coding */\nvoid BrotliCreateHuffmanTree(const uint32_t* data,\n const size_t length,\n const int tree_limit,\n HuffmanTree* tree,\n uint8_t* depth) {\n uint32_t count_limit;\n HuffmanTree sentinel;\n InitHuffmanTree(&sentinel, BROTLI_UINT32_MAX, -1, -1);\n /* For block sizes below 64 kB, we never need to do a second iteration\n of this loop. Probably all of our block sizes will be smaller than\n that, so this loop is mostly of academic interest. If we actually\n would need this, we would be better off with the Katajainen algorithm. */\n for (count_limit = 1; ; count_limit *= 2) {\n size_t n = 0;\n size_t i;\n size_t j;\n size_t k;\n for (i = length; i != 0;) {\n --i;\n if (data[i]) {\n const uint32_t count = BROTLI_MAX(uint32_t, data[i], count_limit);\n InitHuffmanTree(&tree[n++], count, -1, (int16_t)i);\n }\n }\n\n if (n == 1) {\n depth[tree[0].index_right_or_value_] = 1; /* Only one element. */\n break;\n }\n\n SortHuffmanTreeItems(tree, n, SortHuffmanTree);\n\n /* The nodes are:\n [0, n): the sorted leaf nodes that we start with.\n [n]: we add a sentinel here.\n [n + 1, 2n): new parent nodes are added here, starting from\n (n+1). These are naturally in ascending order.\n [2n]: we add a sentinel at the end as well.\n There will be (2n+1) elements at the end. */\n tree[n] = sentinel;\n tree[n + 1] = sentinel;\n\n i = 0; /* Points to the next leaf node. */\n j = n + 1; /* Points to the next non-leaf node. */\n for (k = n - 1; k != 0; --k) {\n size_t left, right;\n if (tree[i].total_count_ <= tree[j].total_count_) {\n left = i;\n ++i;\n } else {\n left = j;\n ++j;\n }\n if (tree[i].total_count_ <= tree[j].total_count_) {\n right = i;\n ++i;\n } else {\n right = j;\n ++j;\n }\n\n {\n /* The sentinel node becomes the parent node. */\n size_t j_end = 2 * n - k;\n tree[j_end].total_count_ =\n tree[left].total_count_ + tree[right].total_count_;\n tree[j_end].index_left_ = (int16_t)left;\n tree[j_end].index_right_or_value_ = (int16_t)right;\n\n /* Add back the last sentinel node. */\n tree[j_end + 1] = sentinel;\n }\n }\n if (BrotliSetDepth((int)(2 * n - 1), &tree[0], depth, tree_limit)) {\n /* We need to pack the Huffman tree in tree_limit bits. If this was not\n successful, add fake entities to the lowest values and retry. */\n break;\n }\n }\n}\n\nstatic void Reverse(uint8_t* v, size_t start, size_t end) {\n --end;\n while (start < end) {\n uint8_t tmp = v[start];\n v[start] = v[end];\n v[end] = tmp;\n ++start;\n --end;\n }\n}\n\nstatic void BrotliWriteHuffmanTreeRepetitions(\n const uint8_t previous_value,\n const uint8_t value,\n size_t repetitions,\n size_t* tree_size,\n uint8_t* tree,\n uint8_t* extra_bits_data) {\n BROTLI_DCHECK(repetitions > 0);\n if (previous_value != value) {\n tree[*tree_size] = value;\n extra_bits_data[*tree_size] = 0;\n ++(*tree_size);\n --repetitions;\n }\n if (repetitions == 7) {\n tree[*tree_size] = value;\n extra_bits_data[*tree_size] = 0;\n ++(*tree_size);\n --repetitions;\n }\n if (repetitions < 3) {\n size_t i;\n for (i = 0; i < repetitions; ++i) {\n tree[*tree_size] = value;\n extra_bits_data[*tree_size] = 0;\n ++(*tree_size);\n }\n } else {\n size_t start = *tree_size;\n repetitions -= 3;\n while (BROTLI_TRUE) {\n tree[*tree_size] = BROTLI_REPEAT_PREVIOUS_CODE_LENGTH;\n extra_bits_data[*tree_size] = repetitions & 0x3;\n ++(*tree_size);\n repetitions >>= 2;\n if (repetitions == 0) {\n break;\n }\n --repetitions;\n }\n Reverse(tree, start, *tree_size);\n Reverse(extra_bits_data, start, *tree_size);\n }\n}\n\nstatic void BrotliWriteHuffmanTreeRepetitionsZeros(\n size_t repetitions,\n size_t* tree_size,\n uint8_t* tree,\n uint8_t* extra_bits_data) {\n if (repetitions == 11) {\n tree[*tree_size] = 0;\n extra_bits_data[*tree_size] = 0;\n ++(*tree_size);\n --repetitions;\n }\n if (repetitions < 3) {\n size_t i;\n for (i = 0; i < repetitions; ++i) {\n tree[*tree_size] = 0;\n extra_bits_data[*tree_size] = 0;\n ++(*tree_size);\n }\n } else {\n size_t start = *tree_size;\n repetitions -= 3;\n while (BROTLI_TRUE) {\n tree[*tree_size] = BROTLI_REPEAT_ZERO_CODE_LENGTH;\n extra_bits_data[*tree_size] = repetitions & 0x7;\n ++(*tree_size);\n repetitions >>= 3;\n if (repetitions == 0) {\n break;\n }\n --repetitions;\n }\n Reverse(tree, start, *tree_size);\n Reverse(extra_bits_data, start, *tree_size);\n }\n}\n\nvoid BrotliOptimizeHuffmanCountsForRle(size_t length, uint32_t* counts,\n uint8_t* good_for_rle) {\n size_t nonzero_count = 0;\n size_t stride;\n size_t limit;\n size_t sum;\n const size_t streak_limit = 1240;\n /* Let's make the Huffman code more compatible with RLE encoding. */\n size_t i;\n for (i = 0; i < length; i++) {\n if (counts[i]) {\n ++nonzero_count;\n }\n }\n if (nonzero_count < 16) {\n return;\n }\n while (length != 0 && counts[length - 1] == 0) {\n --length;\n }\n if (length == 0) {\n return; /* All zeros. */\n }\n /* Now counts[0..length - 1] does not have trailing zeros. */\n {\n size_t nonzeros = 0;\n uint32_t smallest_nonzero = 1 << 30;\n for (i = 0; i < length; ++i) {\n if (counts[i] != 0) {\n ++nonzeros;\n if (smallest_nonzero > counts[i]) {\n smallest_nonzero = counts[i];\n }\n }\n }\n if (nonzeros < 5) {\n /* Small histogram will model it well. */\n return;\n }\n if (smallest_nonzero < 4) {\n size_t zeros = length - nonzeros;\n if (zeros < 6) {\n for (i = 1; i < length - 1; ++i) {\n if (counts[i - 1] != 0 && counts[i] == 0 && counts[i + 1] != 0) {\n counts[i] = 1;\n }\n }\n }\n }\n if (nonzeros < 28) {\n return;\n }\n }\n /* 2) Let's mark all population counts that already can be encoded\n with an RLE code. */\n memset(good_for_rle, 0, length);\n {\n /* Let's not spoil any of the existing good RLE codes.\n Mark any seq of 0's that is longer as 5 as a good_for_rle.\n Mark any seq of non-0's that is longer as 7 as a good_for_rle. */\n uint32_t symbol = counts[0];\n size_t step = 0;\n for (i = 0; i <= length; ++i) {\n if (i == length || counts[i] != symbol) {\n if ((symbol == 0 && step >= 5) ||\n (symbol != 0 && step >= 7)) {\n size_t k;\n for (k = 0; k < step; ++k) {\n good_for_rle[i - k - 1] = 1;\n }\n }\n step = 1;\n if (i != length) {\n symbol = counts[i];\n }\n } else {\n ++step;\n }\n }\n }\n /* 3) Let's replace those population counts that lead to more RLE codes.\n Math here is in 24.8 fixed point representation. */\n stride = 0;\n limit = 256 * (counts[0] + counts[1] + counts[2]) / 3 + 420;\n sum = 0;\n for (i = 0; i <= length; ++i) {\n if (i == length || good_for_rle[i] ||\n (i != 0 && good_for_rle[i - 1]) ||\n (256 * counts[i] - limit + streak_limit) >= 2 * streak_limit) {\n if (stride >= 4 || (stride >= 3 && sum == 0)) {\n size_t k;\n /* The stride must end, collapse what we have, if we have enough (4). */\n size_t count = (sum + stride / 2) / stride;\n if (count == 0) {\n count = 1;\n }\n if (sum == 0) {\n /* Don't make an all zeros stride to be upgraded to ones. */\n count = 0;\n }\n for (k = 0; k < stride; ++k) {\n /* We don't want to change value at counts[i],\n that is already belonging to the next stride. Thus - 1. */\n counts[i - k - 1] = (uint32_t)count;\n }\n }\n stride = 0;\n sum = 0;\n if (i < length - 2) {\n /* All interesting strides have a count of at least 4, */\n /* at least when non-zeros. */\n limit = 256 * (counts[i] + counts[i + 1] + counts[i + 2]) / 3 + 420;\n } else if (i < length) {\n limit = 256 * counts[i];\n } else {\n limit = 0;\n }\n }\n ++stride;\n if (i != length) {\n sum += counts[i];\n if (stride >= 4) {\n limit = (256 * sum + stride / 2) / stride;\n }\n if (stride == 4) {\n limit += 120;\n }\n }\n }\n}\n\nstatic void DecideOverRleUse(const uint8_t* depth, const size_t length,\n BROTLI_BOOL* use_rle_for_non_zero,\n BROTLI_BOOL* use_rle_for_zero) {\n size_t total_reps_zero = 0;\n size_t total_reps_non_zero = 0;\n size_t count_reps_zero = 1;\n size_t count_reps_non_zero = 1;\n size_t i;\n for (i = 0; i < length;) {\n const uint8_t value = depth[i];\n size_t reps = 1;\n size_t k;\n for (k = i + 1; k < length && depth[k] == value; ++k) {\n ++reps;\n }\n if (reps >= 3 && value == 0) {\n total_reps_zero += reps;\n ++count_reps_zero;\n }\n if (reps >= 4 && value != 0) {\n total_reps_non_zero += reps;\n ++count_reps_non_zero;\n }\n i += reps;\n }\n *use_rle_for_non_zero =\n TO_BROTLI_BOOL(total_reps_non_zero > count_reps_non_zero * 2);\n *use_rle_for_zero = TO_BROTLI_BOOL(total_reps_zero > count_reps_zero * 2);\n}\n\nvoid BrotliWriteHuffmanTree(const uint8_t* depth,\n size_t length,\n size_t* tree_size,\n uint8_t* tree,\n uint8_t* extra_bits_data) {\n uint8_t previous_value = BROTLI_INITIAL_REPEATED_CODE_LENGTH;\n size_t i;\n BROTLI_BOOL use_rle_for_non_zero = BROTLI_FALSE;\n BROTLI_BOOL use_rle_for_zero = BROTLI_FALSE;\n\n /* Throw away trailing zeros. */\n size_t new_length = length;\n for (i = 0; i < length; ++i) {\n if (depth[length - i - 1] == 0) {\n --new_length;\n } else {\n break;\n }\n }\n\n /* First gather statistics on if it is a good idea to do RLE. */\n if (length > 50) {\n /* Find RLE coding for longer codes.\n Shorter codes seem not to benefit from RLE. */\n DecideOverRleUse(depth, new_length,\n &use_rle_for_non_zero, &use_rle_for_zero);\n }\n\n /* Actual RLE coding. */\n for (i = 0; i < new_length;) {\n const uint8_t value = depth[i];\n size_t reps = 1;\n if ((value != 0 && use_rle_for_non_zero) ||\n (value == 0 && use_rle_for_zero)) {\n size_t k;\n for (k = i + 1; k < new_length && depth[k] == value; ++k) {\n ++reps;\n }\n }\n if (value == 0) {\n BrotliWriteHuffmanTreeRepetitionsZeros(\n reps, tree_size, tree, extra_bits_data);\n } else {\n BrotliWriteHuffmanTreeRepetitions(previous_value,\n value, reps, tree_size,\n tree, extra_bits_data);\n previous_value = value;\n }\n i += reps;\n }\n}\n\nstatic uint16_t BrotliReverseBits(size_t num_bits, uint16_t bits) {\n static const size_t BROTLI_MODEL(\"small\") kLut[16] =\n { /* Pre-reversed 4-bit values. */\n 0x00, 0x08, 0x04, 0x0C, 0x02, 0x0A, 0x06, 0x0E,\n 0x01, 0x09, 0x05, 0x0D, 0x03, 0x0B, 0x07, 0x0F\n };\n size_t retval = kLut[bits & 0x0F];\n size_t i;\n for (i = 4; i < num_bits; i += 4) {\n retval <<= 4;\n bits = (uint16_t)(bits >> 4);\n retval |= kLut[bits & 0x0F];\n }\n retval >>= ((0 - num_bits) & 0x03);\n return (uint16_t)retval;\n}\n\n/* 0..15 are values for bits */\n#define MAX_HUFFMAN_BITS 16\n\nvoid BrotliConvertBitDepthsToSymbols(const uint8_t* depth,\n size_t len,\n uint16_t* bits) {\n /* In Brotli, all bit depths are [1..15]\n 0 bit depth means that the symbol does not exist. */\n uint16_t bl_count[MAX_HUFFMAN_BITS] = { 0 };\n uint16_t next_code[MAX_HUFFMAN_BITS];\n size_t i;\n int code = 0;\n for (i = 0; i < len; ++i) {\n ++bl_count[depth[i]];\n }\n bl_count[0] = 0;\n next_code[0] = 0;\n for (i = 1; i < MAX_HUFFMAN_BITS; ++i) {\n code = (code + bl_count[i - 1]) << 1;\n next_code[i] = (uint16_t)code;\n }\n for (i = 0; i < len; ++i) {\n if (depth[i]) {\n bits[i] = BrotliReverseBits(depth[i], next_code[depth[i]]++);\n }\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/entropy_encode.h", "content": "/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Entropy encoding (Huffman) utilities. */\n\n#ifndef BROTLI_ENC_ENTROPY_ENCODE_H_\n#define BROTLI_ENC_ENTROPY_ENCODE_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* A node of a Huffman tree. */\ntypedef struct HuffmanTree {\n uint32_t total_count_;\n int16_t index_left_;\n int16_t index_right_or_value_;\n} HuffmanTree;\n\nstatic BROTLI_INLINE void InitHuffmanTree(HuffmanTree* self, uint32_t count,\n int16_t left, int16_t right) {\n self->total_count_ = count;\n self->index_left_ = left;\n self->index_right_or_value_ = right;\n}\n\n/* Returns 1 is assignment of depths succeeded, otherwise 0. */\nBROTLI_INTERNAL BROTLI_BOOL BrotliSetDepth(\n int p, HuffmanTree* pool, uint8_t* depth, int max_depth);\n\n/* This function will create a Huffman tree.\n\n The (data,length) contains the population counts.\n The tree_limit is the maximum bit depth of the Huffman codes.\n\n The depth contains the tree, i.e., how many bits are used for\n the symbol.\n\n The actual Huffman tree is constructed in the tree[] array, which has to\n be at least 2 * length + 1 long.\n\n See http://en.wikipedia.org/wiki/Huffman_coding */\nBROTLI_INTERNAL void BrotliCreateHuffmanTree(const uint32_t* data,\n const size_t length,\n const int tree_limit,\n HuffmanTree* tree,\n uint8_t* depth);\n\n/* Change the population counts in a way that the consequent\n Huffman tree compression, especially its RLE-part will be more\n likely to compress this data more efficiently.\n\n length contains the size of the histogram.\n counts contains the population counts.\n good_for_rle is a buffer of at least length size */\nBROTLI_INTERNAL void BrotliOptimizeHuffmanCountsForRle(\n size_t length, uint32_t* counts, uint8_t* good_for_rle);\n\n/* Write a Huffman tree from bit depths into the bit-stream representation\n of a Huffman tree. The generated Huffman tree is to be compressed once\n more using a Huffman tree */\nBROTLI_INTERNAL void BrotliWriteHuffmanTree(const uint8_t* depth,\n size_t length,\n size_t* tree_size,\n uint8_t* tree,\n uint8_t* extra_bits_data);\n\n/* Get the actual bit values for a tree of bit depths. */\nBROTLI_INTERNAL void BrotliConvertBitDepthsToSymbols(const uint8_t* depth,\n size_t len,\n uint16_t* bits);\n\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\") const size_t kBrotliShellGaps[6];\n/* Input size optimized Shell sort. */\ntypedef BROTLI_BOOL (*HuffmanTreeComparator)(\n const HuffmanTree*, const HuffmanTree*);\nstatic BROTLI_INLINE void SortHuffmanTreeItems(HuffmanTree* items,\n const size_t n, HuffmanTreeComparator comparator) {\n if (n < 13) {\n /* Insertion sort. */\n size_t i;\n for (i = 1; i < n; ++i) {\n HuffmanTree tmp = items[i];\n size_t k = i;\n size_t j = i - 1;\n while (comparator(&tmp, &items[j])) {\n items[k] = items[j];\n k = j;\n if (!j--) break;\n }\n items[k] = tmp;\n }\n return;\n } else {\n /* Shell sort. */\n int g = n < 57 ? 2 : 0;\n for (; g < 6; ++g) {\n size_t gap = kBrotliShellGaps[g];\n size_t i;\n for (i = gap; i < n; ++i) {\n size_t j = i;\n HuffmanTree tmp = items[i];\n for (; j >= gap && comparator(&tmp, &items[j - gap]); j -= gap) {\n items[j] = items[j - gap];\n }\n items[j] = tmp;\n }\n }\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_ENTROPY_ENCODE_H_ */\n" }, { "path": "c/enc/entropy_encode_static.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Static entropy codes used for faster meta-block encoding. */\n\n#ifndef BROTLI_ENC_ENTROPY_ENCODE_STATIC_H_\n#define BROTLI_ENC_ENTROPY_ENCODE_STATIC_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"write_bits.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic const BROTLI_MODEL(\"small\") uint8_t kCodeLengthDepth[18] = {\n 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 0, 4, 4,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint8_t kStaticCommandCodeDepth[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint8_t kStaticDistanceCodeDepth[64] = {\n 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,\n 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,\n 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,\n 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,\n};\n\n/* GENERATED CODE START */\nstatic const BROTLI_MODEL(\"small\")\nuint32_t kCodeLengthBits[18] = {\n 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 15, 31, 0, 11, 7,\n};\n\nstatic BROTLI_INLINE void StoreStaticCodeLengthCode(\n size_t* storage_ix, uint8_t* storage) {\n BrotliWriteBits(\n 40, BROTLI_MAKE_UINT64_T(0x0000FFu, 0x55555554u), storage_ix, storage);\n}\n\nstatic const BROTLI_MODEL(\"small\")\nuint64_t kZeroRepsBits[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 0x00000000, 0x00000000, 0x00000000, 0x00000007, 0x00000017, 0x00000027,\n 0x00000037, 0x00000047, 0x00000057, 0x00000067, 0x00000077, 0x00000770,\n 0x00000b87, 0x00001387, 0x00001b87, 0x00002387, 0x00002b87, 0x00003387,\n 0x00003b87, 0x00000397, 0x00000b97, 0x00001397, 0x00001b97, 0x00002397,\n 0x00002b97, 0x00003397, 0x00003b97, 0x000003a7, 0x00000ba7, 0x000013a7,\n 0x00001ba7, 0x000023a7, 0x00002ba7, 0x000033a7, 0x00003ba7, 0x000003b7,\n 0x00000bb7, 0x000013b7, 0x00001bb7, 0x000023b7, 0x00002bb7, 0x000033b7,\n 0x00003bb7, 0x000003c7, 0x00000bc7, 0x000013c7, 0x00001bc7, 0x000023c7,\n 0x00002bc7, 0x000033c7, 0x00003bc7, 0x000003d7, 0x00000bd7, 0x000013d7,\n 0x00001bd7, 0x000023d7, 0x00002bd7, 0x000033d7, 0x00003bd7, 0x000003e7,\n 0x00000be7, 0x000013e7, 0x00001be7, 0x000023e7, 0x00002be7, 0x000033e7,\n 0x00003be7, 0x000003f7, 0x00000bf7, 0x000013f7, 0x00001bf7, 0x000023f7,\n 0x00002bf7, 0x000033f7, 0x00003bf7, 0x0001c387, 0x0005c387, 0x0009c387,\n 0x000dc387, 0x0011c387, 0x0015c387, 0x0019c387, 0x001dc387, 0x0001cb87,\n 0x0005cb87, 0x0009cb87, 0x000dcb87, 0x0011cb87, 0x0015cb87, 0x0019cb87,\n 0x001dcb87, 0x0001d387, 0x0005d387, 0x0009d387, 0x000dd387, 0x0011d387,\n 0x0015d387, 0x0019d387, 0x001dd387, 0x0001db87, 0x0005db87, 0x0009db87,\n 0x000ddb87, 0x0011db87, 0x0015db87, 0x0019db87, 0x001ddb87, 0x0001e387,\n 0x0005e387, 0x0009e387, 0x000de387, 0x0011e387, 0x0015e387, 0x0019e387,\n 0x001de387, 0x0001eb87, 0x0005eb87, 0x0009eb87, 0x000deb87, 0x0011eb87,\n 0x0015eb87, 0x0019eb87, 0x001deb87, 0x0001f387, 0x0005f387, 0x0009f387,\n 0x000df387, 0x0011f387, 0x0015f387, 0x0019f387, 0x001df387, 0x0001fb87,\n 0x0005fb87, 0x0009fb87, 0x000dfb87, 0x0011fb87, 0x0015fb87, 0x0019fb87,\n 0x001dfb87, 0x0001c397, 0x0005c397, 0x0009c397, 0x000dc397, 0x0011c397,\n 0x0015c397, 0x0019c397, 0x001dc397, 0x0001cb97, 0x0005cb97, 0x0009cb97,\n 0x000dcb97, 0x0011cb97, 0x0015cb97, 0x0019cb97, 0x001dcb97, 0x0001d397,\n 0x0005d397, 0x0009d397, 0x000dd397, 0x0011d397, 0x0015d397, 0x0019d397,\n 0x001dd397, 0x0001db97, 0x0005db97, 0x0009db97, 0x000ddb97, 0x0011db97,\n 0x0015db97, 0x0019db97, 0x001ddb97, 0x0001e397, 0x0005e397, 0x0009e397,\n 0x000de397, 0x0011e397, 0x0015e397, 0x0019e397, 0x001de397, 0x0001eb97,\n 0x0005eb97, 0x0009eb97, 0x000deb97, 0x0011eb97, 0x0015eb97, 0x0019eb97,\n 0x001deb97, 0x0001f397, 0x0005f397, 0x0009f397, 0x000df397, 0x0011f397,\n 0x0015f397, 0x0019f397, 0x001df397, 0x0001fb97, 0x0005fb97, 0x0009fb97,\n 0x000dfb97, 0x0011fb97, 0x0015fb97, 0x0019fb97, 0x001dfb97, 0x0001c3a7,\n 0x0005c3a7, 0x0009c3a7, 0x000dc3a7, 0x0011c3a7, 0x0015c3a7, 0x0019c3a7,\n 0x001dc3a7, 0x0001cba7, 0x0005cba7, 0x0009cba7, 0x000dcba7, 0x0011cba7,\n 0x0015cba7, 0x0019cba7, 0x001dcba7, 0x0001d3a7, 0x0005d3a7, 0x0009d3a7,\n 0x000dd3a7, 0x0011d3a7, 0x0015d3a7, 0x0019d3a7, 0x001dd3a7, 0x0001dba7,\n 0x0005dba7, 0x0009dba7, 0x000ddba7, 0x0011dba7, 0x0015dba7, 0x0019dba7,\n 0x001ddba7, 0x0001e3a7, 0x0005e3a7, 0x0009e3a7, 0x000de3a7, 0x0011e3a7,\n 0x0015e3a7, 0x0019e3a7, 0x001de3a7, 0x0001eba7, 0x0005eba7, 0x0009eba7,\n 0x000deba7, 0x0011eba7, 0x0015eba7, 0x0019eba7, 0x001deba7, 0x0001f3a7,\n 0x0005f3a7, 0x0009f3a7, 0x000df3a7, 0x0011f3a7, 0x0015f3a7, 0x0019f3a7,\n 0x001df3a7, 0x0001fba7, 0x0005fba7, 0x0009fba7, 0x000dfba7, 0x0011fba7,\n 0x0015fba7, 0x0019fba7, 0x001dfba7, 0x0001c3b7, 0x0005c3b7, 0x0009c3b7,\n 0x000dc3b7, 0x0011c3b7, 0x0015c3b7, 0x0019c3b7, 0x001dc3b7, 0x0001cbb7,\n 0x0005cbb7, 0x0009cbb7, 0x000dcbb7, 0x0011cbb7, 0x0015cbb7, 0x0019cbb7,\n 0x001dcbb7, 0x0001d3b7, 0x0005d3b7, 0x0009d3b7, 0x000dd3b7, 0x0011d3b7,\n 0x0015d3b7, 0x0019d3b7, 0x001dd3b7, 0x0001dbb7, 0x0005dbb7, 0x0009dbb7,\n 0x000ddbb7, 0x0011dbb7, 0x0015dbb7, 0x0019dbb7, 0x001ddbb7, 0x0001e3b7,\n 0x0005e3b7, 0x0009e3b7, 0x000de3b7, 0x0011e3b7, 0x0015e3b7, 0x0019e3b7,\n 0x001de3b7, 0x0001ebb7, 0x0005ebb7, 0x0009ebb7, 0x000debb7, 0x0011ebb7,\n 0x0015ebb7, 0x0019ebb7, 0x001debb7, 0x0001f3b7, 0x0005f3b7, 0x0009f3b7,\n 0x000df3b7, 0x0011f3b7, 0x0015f3b7, 0x0019f3b7, 0x001df3b7, 0x0001fbb7,\n 0x0005fbb7, 0x0009fbb7, 0x000dfbb7, 0x0011fbb7, 0x0015fbb7, 0x0019fbb7,\n 0x001dfbb7, 0x0001c3c7, 0x0005c3c7, 0x0009c3c7, 0x000dc3c7, 0x0011c3c7,\n 0x0015c3c7, 0x0019c3c7, 0x001dc3c7, 0x0001cbc7, 0x0005cbc7, 0x0009cbc7,\n 0x000dcbc7, 0x0011cbc7, 0x0015cbc7, 0x0019cbc7, 0x001dcbc7, 0x0001d3c7,\n 0x0005d3c7, 0x0009d3c7, 0x000dd3c7, 0x0011d3c7, 0x0015d3c7, 0x0019d3c7,\n 0x001dd3c7, 0x0001dbc7, 0x0005dbc7, 0x0009dbc7, 0x000ddbc7, 0x0011dbc7,\n 0x0015dbc7, 0x0019dbc7, 0x001ddbc7, 0x0001e3c7, 0x0005e3c7, 0x0009e3c7,\n 0x000de3c7, 0x0011e3c7, 0x0015e3c7, 0x0019e3c7, 0x001de3c7, 0x0001ebc7,\n 0x0005ebc7, 0x0009ebc7, 0x000debc7, 0x0011ebc7, 0x0015ebc7, 0x0019ebc7,\n 0x001debc7, 0x0001f3c7, 0x0005f3c7, 0x0009f3c7, 0x000df3c7, 0x0011f3c7,\n 0x0015f3c7, 0x0019f3c7, 0x001df3c7, 0x0001fbc7, 0x0005fbc7, 0x0009fbc7,\n 0x000dfbc7, 0x0011fbc7, 0x0015fbc7, 0x0019fbc7, 0x001dfbc7, 0x0001c3d7,\n 0x0005c3d7, 0x0009c3d7, 0x000dc3d7, 0x0011c3d7, 0x0015c3d7, 0x0019c3d7,\n 0x001dc3d7, 0x0001cbd7, 0x0005cbd7, 0x0009cbd7, 0x000dcbd7, 0x0011cbd7,\n 0x0015cbd7, 0x0019cbd7, 0x001dcbd7, 0x0001d3d7, 0x0005d3d7, 0x0009d3d7,\n 0x000dd3d7, 0x0011d3d7, 0x0015d3d7, 0x0019d3d7, 0x001dd3d7, 0x0001dbd7,\n 0x0005dbd7, 0x0009dbd7, 0x000ddbd7, 0x0011dbd7, 0x0015dbd7, 0x0019dbd7,\n 0x001ddbd7, 0x0001e3d7, 0x0005e3d7, 0x0009e3d7, 0x000de3d7, 0x0011e3d7,\n 0x0015e3d7, 0x0019e3d7, 0x001de3d7, 0x0001ebd7, 0x0005ebd7, 0x0009ebd7,\n 0x000debd7, 0x0011ebd7, 0x0015ebd7, 0x0019ebd7, 0x001debd7, 0x0001f3d7,\n 0x0005f3d7, 0x0009f3d7, 0x000df3d7, 0x0011f3d7, 0x0015f3d7, 0x0019f3d7,\n 0x001df3d7, 0x0001fbd7, 0x0005fbd7, 0x0009fbd7, 0x000dfbd7, 0x0011fbd7,\n 0x0015fbd7, 0x0019fbd7, 0x001dfbd7, 0x0001c3e7, 0x0005c3e7, 0x0009c3e7,\n 0x000dc3e7, 0x0011c3e7, 0x0015c3e7, 0x0019c3e7, 0x001dc3e7, 0x0001cbe7,\n 0x0005cbe7, 0x0009cbe7, 0x000dcbe7, 0x0011cbe7, 0x0015cbe7, 0x0019cbe7,\n 0x001dcbe7, 0x0001d3e7, 0x0005d3e7, 0x0009d3e7, 0x000dd3e7, 0x0011d3e7,\n 0x0015d3e7, 0x0019d3e7, 0x001dd3e7, 0x0001dbe7, 0x0005dbe7, 0x0009dbe7,\n 0x000ddbe7, 0x0011dbe7, 0x0015dbe7, 0x0019dbe7, 0x001ddbe7, 0x0001e3e7,\n 0x0005e3e7, 0x0009e3e7, 0x000de3e7, 0x0011e3e7, 0x0015e3e7, 0x0019e3e7,\n 0x001de3e7, 0x0001ebe7, 0x0005ebe7, 0x0009ebe7, 0x000debe7, 0x0011ebe7,\n 0x0015ebe7, 0x0019ebe7, 0x001debe7, 0x0001f3e7, 0x0005f3e7, 0x0009f3e7,\n 0x000df3e7, 0x0011f3e7, 0x0015f3e7, 0x0019f3e7, 0x001df3e7, 0x0001fbe7,\n 0x0005fbe7, 0x0009fbe7, 0x000dfbe7, 0x0011fbe7, 0x0015fbe7, 0x0019fbe7,\n 0x001dfbe7, 0x0001c3f7, 0x0005c3f7, 0x0009c3f7, 0x000dc3f7, 0x0011c3f7,\n 0x0015c3f7, 0x0019c3f7, 0x001dc3f7, 0x0001cbf7, 0x0005cbf7, 0x0009cbf7,\n 0x000dcbf7, 0x0011cbf7, 0x0015cbf7, 0x0019cbf7, 0x001dcbf7, 0x0001d3f7,\n 0x0005d3f7, 0x0009d3f7, 0x000dd3f7, 0x0011d3f7, 0x0015d3f7, 0x0019d3f7,\n 0x001dd3f7, 0x0001dbf7, 0x0005dbf7, 0x0009dbf7, 0x000ddbf7, 0x0011dbf7,\n 0x0015dbf7, 0x0019dbf7, 0x001ddbf7, 0x0001e3f7, 0x0005e3f7, 0x0009e3f7,\n 0x000de3f7, 0x0011e3f7, 0x0015e3f7, 0x0019e3f7, 0x001de3f7, 0x0001ebf7,\n 0x0005ebf7, 0x0009ebf7, 0x000debf7, 0x0011ebf7, 0x0015ebf7, 0x0019ebf7,\n 0x001debf7, 0x0001f3f7, 0x0005f3f7, 0x0009f3f7, 0x000df3f7, 0x0011f3f7,\n 0x0015f3f7, 0x0019f3f7, 0x001df3f7, 0x0001fbf7, 0x0005fbf7, 0x0009fbf7,\n 0x000dfbf7, 0x0011fbf7, 0x0015fbf7, 0x0019fbf7, 0x001dfbf7, 0x00e1c387,\n 0x02e1c387, 0x04e1c387, 0x06e1c387, 0x08e1c387, 0x0ae1c387, 0x0ce1c387,\n 0x0ee1c387, 0x00e5c387, 0x02e5c387, 0x04e5c387, 0x06e5c387, 0x08e5c387,\n 0x0ae5c387, 0x0ce5c387, 0x0ee5c387, 0x00e9c387, 0x02e9c387, 0x04e9c387,\n 0x06e9c387, 0x08e9c387, 0x0ae9c387, 0x0ce9c387, 0x0ee9c387, 0x00edc387,\n 0x02edc387, 0x04edc387, 0x06edc387, 0x08edc387, 0x0aedc387, 0x0cedc387,\n 0x0eedc387, 0x00f1c387, 0x02f1c387, 0x04f1c387, 0x06f1c387, 0x08f1c387,\n 0x0af1c387, 0x0cf1c387, 0x0ef1c387, 0x00f5c387, 0x02f5c387, 0x04f5c387,\n 0x06f5c387, 0x08f5c387, 0x0af5c387, 0x0cf5c387, 0x0ef5c387, 0x00f9c387,\n 0x02f9c387, 0x04f9c387, 0x06f9c387, 0x08f9c387, 0x0af9c387, 0x0cf9c387,\n 0x0ef9c387, 0x00fdc387, 0x02fdc387, 0x04fdc387, 0x06fdc387, 0x08fdc387,\n 0x0afdc387, 0x0cfdc387, 0x0efdc387, 0x00e1cb87, 0x02e1cb87, 0x04e1cb87,\n 0x06e1cb87, 0x08e1cb87, 0x0ae1cb87, 0x0ce1cb87, 0x0ee1cb87, 0x00e5cb87,\n 0x02e5cb87, 0x04e5cb87, 0x06e5cb87, 0x08e5cb87, 0x0ae5cb87, 0x0ce5cb87,\n 0x0ee5cb87, 0x00e9cb87, 0x02e9cb87, 0x04e9cb87, 0x06e9cb87, 0x08e9cb87,\n 0x0ae9cb87, 0x0ce9cb87, 0x0ee9cb87, 0x00edcb87, 0x02edcb87, 0x04edcb87,\n 0x06edcb87, 0x08edcb87, 0x0aedcb87, 0x0cedcb87, 0x0eedcb87, 0x00f1cb87,\n 0x02f1cb87, 0x04f1cb87, 0x06f1cb87, 0x08f1cb87, 0x0af1cb87, 0x0cf1cb87,\n 0x0ef1cb87, 0x00f5cb87, 0x02f5cb87, 0x04f5cb87, 0x06f5cb87, 0x08f5cb87,\n 0x0af5cb87, 0x0cf5cb87, 0x0ef5cb87, 0x00f9cb87, 0x02f9cb87, 0x04f9cb87,\n 0x06f9cb87, 0x08f9cb87,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint32_t kZeroRepsDepth[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 0, 4, 8, 7, 7, 7, 7, 7, 7, 7, 7, 11, 14, 14, 14, 14,\n 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\n 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\n 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\n 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,\n 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint64_t kNonZeroRepsBits[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 0x0000000b, 0x0000001b, 0x0000002b, 0x0000003b, 0x000002cb, 0x000006cb,\n 0x00000acb, 0x00000ecb, 0x000002db, 0x000006db, 0x00000adb, 0x00000edb,\n 0x000002eb, 0x000006eb, 0x00000aeb, 0x00000eeb, 0x000002fb, 0x000006fb,\n 0x00000afb, 0x00000efb, 0x0000b2cb, 0x0001b2cb, 0x0002b2cb, 0x0003b2cb,\n 0x0000b6cb, 0x0001b6cb, 0x0002b6cb, 0x0003b6cb, 0x0000bacb, 0x0001bacb,\n 0x0002bacb, 0x0003bacb, 0x0000becb, 0x0001becb, 0x0002becb, 0x0003becb,\n 0x0000b2db, 0x0001b2db, 0x0002b2db, 0x0003b2db, 0x0000b6db, 0x0001b6db,\n 0x0002b6db, 0x0003b6db, 0x0000badb, 0x0001badb, 0x0002badb, 0x0003badb,\n 0x0000bedb, 0x0001bedb, 0x0002bedb, 0x0003bedb, 0x0000b2eb, 0x0001b2eb,\n 0x0002b2eb, 0x0003b2eb, 0x0000b6eb, 0x0001b6eb, 0x0002b6eb, 0x0003b6eb,\n 0x0000baeb, 0x0001baeb, 0x0002baeb, 0x0003baeb, 0x0000beeb, 0x0001beeb,\n 0x0002beeb, 0x0003beeb, 0x0000b2fb, 0x0001b2fb, 0x0002b2fb, 0x0003b2fb,\n 0x0000b6fb, 0x0001b6fb, 0x0002b6fb, 0x0003b6fb, 0x0000bafb, 0x0001bafb,\n 0x0002bafb, 0x0003bafb, 0x0000befb, 0x0001befb, 0x0002befb, 0x0003befb,\n 0x002cb2cb, 0x006cb2cb, 0x00acb2cb, 0x00ecb2cb, 0x002db2cb, 0x006db2cb,\n 0x00adb2cb, 0x00edb2cb, 0x002eb2cb, 0x006eb2cb, 0x00aeb2cb, 0x00eeb2cb,\n 0x002fb2cb, 0x006fb2cb, 0x00afb2cb, 0x00efb2cb, 0x002cb6cb, 0x006cb6cb,\n 0x00acb6cb, 0x00ecb6cb, 0x002db6cb, 0x006db6cb, 0x00adb6cb, 0x00edb6cb,\n 0x002eb6cb, 0x006eb6cb, 0x00aeb6cb, 0x00eeb6cb, 0x002fb6cb, 0x006fb6cb,\n 0x00afb6cb, 0x00efb6cb, 0x002cbacb, 0x006cbacb, 0x00acbacb, 0x00ecbacb,\n 0x002dbacb, 0x006dbacb, 0x00adbacb, 0x00edbacb, 0x002ebacb, 0x006ebacb,\n 0x00aebacb, 0x00eebacb, 0x002fbacb, 0x006fbacb, 0x00afbacb, 0x00efbacb,\n 0x002cbecb, 0x006cbecb, 0x00acbecb, 0x00ecbecb, 0x002dbecb, 0x006dbecb,\n 0x00adbecb, 0x00edbecb, 0x002ebecb, 0x006ebecb, 0x00aebecb, 0x00eebecb,\n 0x002fbecb, 0x006fbecb, 0x00afbecb, 0x00efbecb, 0x002cb2db, 0x006cb2db,\n 0x00acb2db, 0x00ecb2db, 0x002db2db, 0x006db2db, 0x00adb2db, 0x00edb2db,\n 0x002eb2db, 0x006eb2db, 0x00aeb2db, 0x00eeb2db, 0x002fb2db, 0x006fb2db,\n 0x00afb2db, 0x00efb2db, 0x002cb6db, 0x006cb6db, 0x00acb6db, 0x00ecb6db,\n 0x002db6db, 0x006db6db, 0x00adb6db, 0x00edb6db, 0x002eb6db, 0x006eb6db,\n 0x00aeb6db, 0x00eeb6db, 0x002fb6db, 0x006fb6db, 0x00afb6db, 0x00efb6db,\n 0x002cbadb, 0x006cbadb, 0x00acbadb, 0x00ecbadb, 0x002dbadb, 0x006dbadb,\n 0x00adbadb, 0x00edbadb, 0x002ebadb, 0x006ebadb, 0x00aebadb, 0x00eebadb,\n 0x002fbadb, 0x006fbadb, 0x00afbadb, 0x00efbadb, 0x002cbedb, 0x006cbedb,\n 0x00acbedb, 0x00ecbedb, 0x002dbedb, 0x006dbedb, 0x00adbedb, 0x00edbedb,\n 0x002ebedb, 0x006ebedb, 0x00aebedb, 0x00eebedb, 0x002fbedb, 0x006fbedb,\n 0x00afbedb, 0x00efbedb, 0x002cb2eb, 0x006cb2eb, 0x00acb2eb, 0x00ecb2eb,\n 0x002db2eb, 0x006db2eb, 0x00adb2eb, 0x00edb2eb, 0x002eb2eb, 0x006eb2eb,\n 0x00aeb2eb, 0x00eeb2eb, 0x002fb2eb, 0x006fb2eb, 0x00afb2eb, 0x00efb2eb,\n 0x002cb6eb, 0x006cb6eb, 0x00acb6eb, 0x00ecb6eb, 0x002db6eb, 0x006db6eb,\n 0x00adb6eb, 0x00edb6eb, 0x002eb6eb, 0x006eb6eb, 0x00aeb6eb, 0x00eeb6eb,\n 0x002fb6eb, 0x006fb6eb, 0x00afb6eb, 0x00efb6eb, 0x002cbaeb, 0x006cbaeb,\n 0x00acbaeb, 0x00ecbaeb, 0x002dbaeb, 0x006dbaeb, 0x00adbaeb, 0x00edbaeb,\n 0x002ebaeb, 0x006ebaeb, 0x00aebaeb, 0x00eebaeb, 0x002fbaeb, 0x006fbaeb,\n 0x00afbaeb, 0x00efbaeb, 0x002cbeeb, 0x006cbeeb, 0x00acbeeb, 0x00ecbeeb,\n 0x002dbeeb, 0x006dbeeb, 0x00adbeeb, 0x00edbeeb, 0x002ebeeb, 0x006ebeeb,\n 0x00aebeeb, 0x00eebeeb, 0x002fbeeb, 0x006fbeeb, 0x00afbeeb, 0x00efbeeb,\n 0x002cb2fb, 0x006cb2fb, 0x00acb2fb, 0x00ecb2fb, 0x002db2fb, 0x006db2fb,\n 0x00adb2fb, 0x00edb2fb, 0x002eb2fb, 0x006eb2fb, 0x00aeb2fb, 0x00eeb2fb,\n 0x002fb2fb, 0x006fb2fb, 0x00afb2fb, 0x00efb2fb, 0x002cb6fb, 0x006cb6fb,\n 0x00acb6fb, 0x00ecb6fb, 0x002db6fb, 0x006db6fb, 0x00adb6fb, 0x00edb6fb,\n 0x002eb6fb, 0x006eb6fb, 0x00aeb6fb, 0x00eeb6fb, 0x002fb6fb, 0x006fb6fb,\n 0x00afb6fb, 0x00efb6fb, 0x002cbafb, 0x006cbafb, 0x00acbafb, 0x00ecbafb,\n 0x002dbafb, 0x006dbafb, 0x00adbafb, 0x00edbafb, 0x002ebafb, 0x006ebafb,\n 0x00aebafb, 0x00eebafb, 0x002fbafb, 0x006fbafb, 0x00afbafb, 0x00efbafb,\n 0x002cbefb, 0x006cbefb, 0x00acbefb, 0x00ecbefb, 0x002dbefb, 0x006dbefb,\n 0x00adbefb, 0x00edbefb, 0x002ebefb, 0x006ebefb, 0x00aebefb, 0x00eebefb,\n 0x002fbefb, 0x006fbefb, 0x00afbefb, 0x00efbefb, 0x0b2cb2cb, 0x1b2cb2cb,\n 0x2b2cb2cb, 0x3b2cb2cb, 0x0b6cb2cb, 0x1b6cb2cb, 0x2b6cb2cb, 0x3b6cb2cb,\n 0x0bacb2cb, 0x1bacb2cb, 0x2bacb2cb, 0x3bacb2cb, 0x0becb2cb, 0x1becb2cb,\n 0x2becb2cb, 0x3becb2cb, 0x0b2db2cb, 0x1b2db2cb, 0x2b2db2cb, 0x3b2db2cb,\n 0x0b6db2cb, 0x1b6db2cb, 0x2b6db2cb, 0x3b6db2cb, 0x0badb2cb, 0x1badb2cb,\n 0x2badb2cb, 0x3badb2cb, 0x0bedb2cb, 0x1bedb2cb, 0x2bedb2cb, 0x3bedb2cb,\n 0x0b2eb2cb, 0x1b2eb2cb, 0x2b2eb2cb, 0x3b2eb2cb, 0x0b6eb2cb, 0x1b6eb2cb,\n 0x2b6eb2cb, 0x3b6eb2cb, 0x0baeb2cb, 0x1baeb2cb, 0x2baeb2cb, 0x3baeb2cb,\n 0x0beeb2cb, 0x1beeb2cb, 0x2beeb2cb, 0x3beeb2cb, 0x0b2fb2cb, 0x1b2fb2cb,\n 0x2b2fb2cb, 0x3b2fb2cb, 0x0b6fb2cb, 0x1b6fb2cb, 0x2b6fb2cb, 0x3b6fb2cb,\n 0x0bafb2cb, 0x1bafb2cb, 0x2bafb2cb, 0x3bafb2cb, 0x0befb2cb, 0x1befb2cb,\n 0x2befb2cb, 0x3befb2cb, 0x0b2cb6cb, 0x1b2cb6cb, 0x2b2cb6cb, 0x3b2cb6cb,\n 0x0b6cb6cb, 0x1b6cb6cb, 0x2b6cb6cb, 0x3b6cb6cb, 0x0bacb6cb, 0x1bacb6cb,\n 0x2bacb6cb, 0x3bacb6cb, 0x0becb6cb, 0x1becb6cb, 0x2becb6cb, 0x3becb6cb,\n 0x0b2db6cb, 0x1b2db6cb, 0x2b2db6cb, 0x3b2db6cb, 0x0b6db6cb, 0x1b6db6cb,\n 0x2b6db6cb, 0x3b6db6cb, 0x0badb6cb, 0x1badb6cb, 0x2badb6cb, 0x3badb6cb,\n 0x0bedb6cb, 0x1bedb6cb, 0x2bedb6cb, 0x3bedb6cb, 0x0b2eb6cb, 0x1b2eb6cb,\n 0x2b2eb6cb, 0x3b2eb6cb, 0x0b6eb6cb, 0x1b6eb6cb, 0x2b6eb6cb, 0x3b6eb6cb,\n 0x0baeb6cb, 0x1baeb6cb, 0x2baeb6cb, 0x3baeb6cb, 0x0beeb6cb, 0x1beeb6cb,\n 0x2beeb6cb, 0x3beeb6cb, 0x0b2fb6cb, 0x1b2fb6cb, 0x2b2fb6cb, 0x3b2fb6cb,\n 0x0b6fb6cb, 0x1b6fb6cb, 0x2b6fb6cb, 0x3b6fb6cb, 0x0bafb6cb, 0x1bafb6cb,\n 0x2bafb6cb, 0x3bafb6cb, 0x0befb6cb, 0x1befb6cb, 0x2befb6cb, 0x3befb6cb,\n 0x0b2cbacb, 0x1b2cbacb, 0x2b2cbacb, 0x3b2cbacb, 0x0b6cbacb, 0x1b6cbacb,\n 0x2b6cbacb, 0x3b6cbacb, 0x0bacbacb, 0x1bacbacb, 0x2bacbacb, 0x3bacbacb,\n 0x0becbacb, 0x1becbacb, 0x2becbacb, 0x3becbacb, 0x0b2dbacb, 0x1b2dbacb,\n 0x2b2dbacb, 0x3b2dbacb, 0x0b6dbacb, 0x1b6dbacb, 0x2b6dbacb, 0x3b6dbacb,\n 0x0badbacb, 0x1badbacb, 0x2badbacb, 0x3badbacb, 0x0bedbacb, 0x1bedbacb,\n 0x2bedbacb, 0x3bedbacb, 0x0b2ebacb, 0x1b2ebacb, 0x2b2ebacb, 0x3b2ebacb,\n 0x0b6ebacb, 0x1b6ebacb, 0x2b6ebacb, 0x3b6ebacb, 0x0baebacb, 0x1baebacb,\n 0x2baebacb, 0x3baebacb, 0x0beebacb, 0x1beebacb, 0x2beebacb, 0x3beebacb,\n 0x0b2fbacb, 0x1b2fbacb, 0x2b2fbacb, 0x3b2fbacb, 0x0b6fbacb, 0x1b6fbacb,\n 0x2b6fbacb, 0x3b6fbacb, 0x0bafbacb, 0x1bafbacb, 0x2bafbacb, 0x3bafbacb,\n 0x0befbacb, 0x1befbacb, 0x2befbacb, 0x3befbacb, 0x0b2cbecb, 0x1b2cbecb,\n 0x2b2cbecb, 0x3b2cbecb, 0x0b6cbecb, 0x1b6cbecb, 0x2b6cbecb, 0x3b6cbecb,\n 0x0bacbecb, 0x1bacbecb, 0x2bacbecb, 0x3bacbecb, 0x0becbecb, 0x1becbecb,\n 0x2becbecb, 0x3becbecb, 0x0b2dbecb, 0x1b2dbecb, 0x2b2dbecb, 0x3b2dbecb,\n 0x0b6dbecb, 0x1b6dbecb, 0x2b6dbecb, 0x3b6dbecb, 0x0badbecb, 0x1badbecb,\n 0x2badbecb, 0x3badbecb, 0x0bedbecb, 0x1bedbecb, 0x2bedbecb, 0x3bedbecb,\n 0x0b2ebecb, 0x1b2ebecb, 0x2b2ebecb, 0x3b2ebecb, 0x0b6ebecb, 0x1b6ebecb,\n 0x2b6ebecb, 0x3b6ebecb, 0x0baebecb, 0x1baebecb, 0x2baebecb, 0x3baebecb,\n 0x0beebecb, 0x1beebecb, 0x2beebecb, 0x3beebecb, 0x0b2fbecb, 0x1b2fbecb,\n 0x2b2fbecb, 0x3b2fbecb, 0x0b6fbecb, 0x1b6fbecb, 0x2b6fbecb, 0x3b6fbecb,\n 0x0bafbecb, 0x1bafbecb, 0x2bafbecb, 0x3bafbecb, 0x0befbecb, 0x1befbecb,\n 0x2befbecb, 0x3befbecb, 0x0b2cb2db, 0x1b2cb2db, 0x2b2cb2db, 0x3b2cb2db,\n 0x0b6cb2db, 0x1b6cb2db, 0x2b6cb2db, 0x3b6cb2db, 0x0bacb2db, 0x1bacb2db,\n 0x2bacb2db, 0x3bacb2db, 0x0becb2db, 0x1becb2db, 0x2becb2db, 0x3becb2db,\n 0x0b2db2db, 0x1b2db2db, 0x2b2db2db, 0x3b2db2db, 0x0b6db2db, 0x1b6db2db,\n 0x2b6db2db, 0x3b6db2db, 0x0badb2db, 0x1badb2db, 0x2badb2db, 0x3badb2db,\n 0x0bedb2db, 0x1bedb2db, 0x2bedb2db, 0x3bedb2db, 0x0b2eb2db, 0x1b2eb2db,\n 0x2b2eb2db, 0x3b2eb2db, 0x0b6eb2db, 0x1b6eb2db, 0x2b6eb2db, 0x3b6eb2db,\n 0x0baeb2db, 0x1baeb2db, 0x2baeb2db, 0x3baeb2db, 0x0beeb2db, 0x1beeb2db,\n 0x2beeb2db, 0x3beeb2db, 0x0b2fb2db, 0x1b2fb2db, 0x2b2fb2db, 0x3b2fb2db,\n 0x0b6fb2db, 0x1b6fb2db, 0x2b6fb2db, 0x3b6fb2db, 0x0bafb2db, 0x1bafb2db,\n 0x2bafb2db, 0x3bafb2db, 0x0befb2db, 0x1befb2db, 0x2befb2db, 0x3befb2db,\n 0x0b2cb6db, 0x1b2cb6db, 0x2b2cb6db, 0x3b2cb6db, 0x0b6cb6db, 0x1b6cb6db,\n 0x2b6cb6db, 0x3b6cb6db, 0x0bacb6db, 0x1bacb6db, 0x2bacb6db, 0x3bacb6db,\n 0x0becb6db, 0x1becb6db, 0x2becb6db, 0x3becb6db, 0x0b2db6db, 0x1b2db6db,\n 0x2b2db6db, 0x3b2db6db, 0x0b6db6db, 0x1b6db6db, 0x2b6db6db, 0x3b6db6db,\n 0x0badb6db, 0x1badb6db, 0x2badb6db, 0x3badb6db, 0x0bedb6db, 0x1bedb6db,\n 0x2bedb6db, 0x3bedb6db, 0x0b2eb6db, 0x1b2eb6db, 0x2b2eb6db, 0x3b2eb6db,\n 0x0b6eb6db, 0x1b6eb6db, 0x2b6eb6db, 0x3b6eb6db, 0x0baeb6db, 0x1baeb6db,\n 0x2baeb6db, 0x3baeb6db,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint32_t kNonZeroRepsDepth[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 6, 6, 6, 6, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,\n 12, 12, 12, 12, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,\n 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,\n 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,\n 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,\n 18, 18, 18, 18, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\n 24, 24, 24, 24, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,\n};\n\nstatic const BROTLI_MODEL(\"small\")\nuint16_t kStaticCommandCodeBits[BROTLI_NUM_COMMAND_SYMBOLS] = {\n 0, 256, 128, 384, 64, 320, 192, 448,\n 32, 288, 160, 416, 96, 352, 224, 480,\n 16, 272, 144, 400, 80, 336, 208, 464,\n 48, 304, 176, 432, 112, 368, 240, 496,\n 8, 264, 136, 392, 72, 328, 200, 456,\n 40, 296, 168, 424, 104, 360, 232, 488,\n 24, 280, 152, 408, 88, 344, 216, 472,\n 56, 312, 184, 440, 120, 376, 248, 504,\n 4, 260, 132, 388, 68, 324, 196, 452,\n 36, 292, 164, 420, 100, 356, 228, 484,\n 20, 276, 148, 404, 84, 340, 212, 468,\n 52, 308, 180, 436, 116, 372, 244, 500,\n 12, 268, 140, 396, 76, 332, 204, 460,\n 44, 300, 172, 428, 108, 364, 236, 492,\n 28, 284, 156, 412, 92, 348, 220, 476,\n 60, 316, 188, 444, 124, 380, 252, 508,\n 2, 258, 130, 386, 66, 322, 194, 450,\n 34, 290, 162, 418, 98, 354, 226, 482,\n 18, 274, 146, 402, 82, 338, 210, 466,\n 50, 306, 178, 434, 114, 370, 242, 498,\n 10, 266, 138, 394, 74, 330, 202, 458,\n 42, 298, 170, 426, 106, 362, 234, 490,\n 26, 282, 154, 410, 90, 346, 218, 474,\n 58, 314, 186, 442, 122, 378, 250, 506,\n 6, 262, 134, 390, 70, 326, 198, 454,\n 38, 294, 166, 422, 102, 358, 230, 486,\n 22, 278, 150, 406, 86, 342, 214, 470,\n 54, 310, 182, 438, 118, 374, 246, 502,\n 14, 270, 142, 398, 78, 334, 206, 462,\n 46, 302, 174, 430, 110, 366, 238, 494,\n 30, 286, 158, 414, 94, 350, 222, 478,\n 62, 318, 190, 446, 126, 382, 254, 510,\n 1, 257, 129, 385, 65, 321, 193, 449,\n 33, 289, 161, 417, 97, 353, 225, 481,\n 17, 273, 145, 401, 81, 337, 209, 465,\n 49, 305, 177, 433, 113, 369, 241, 497,\n 9, 265, 137, 393, 73, 329, 201, 457,\n 41, 297, 169, 425, 105, 361, 233, 489,\n 25, 281, 153, 409, 89, 345, 217, 473,\n 57, 313, 185, 441, 121, 377, 249, 505,\n 5, 261, 133, 389, 69, 325, 197, 453,\n 37, 293, 165, 421, 101, 357, 229, 485,\n 21, 277, 149, 405, 85, 341, 213, 469,\n 53, 309, 181, 437, 117, 373, 245, 501,\n 13, 269, 141, 397, 77, 333, 205, 461,\n 45, 301, 173, 429, 109, 365, 237, 493,\n 29, 285, 157, 413, 93, 349, 221, 477,\n 61, 317, 189, 445, 125, 381, 253, 509,\n 3, 259, 131, 387, 67, 323, 195, 451,\n 35, 291, 163, 419, 99, 355, 227, 483,\n 19, 275, 147, 403, 83, 339, 211, 467,\n 51, 307, 179, 435, 115, 371, 243, 499,\n 11, 267, 139, 395, 75, 331, 203, 459,\n 43, 299, 171, 427, 107, 363, 235, 491,\n 27, 283, 155, 411, 91, 347, 219, 475,\n 59, 315, 187, 443, 123, 379, 251, 507,\n 7, 1031, 519, 1543, 263, 1287, 775, 1799,\n 135, 1159, 647, 1671, 391, 1415, 903, 1927,\n 71, 1095, 583, 1607, 327, 1351, 839, 1863,\n 199, 1223, 711, 1735, 455, 1479, 967, 1991,\n 39, 1063, 551, 1575, 295, 1319, 807, 1831,\n 167, 1191, 679, 1703, 423, 1447, 935, 1959,\n 103, 1127, 615, 1639, 359, 1383, 871, 1895,\n 231, 1255, 743, 1767, 487, 1511, 999, 2023,\n 23, 1047, 535, 1559, 279, 1303, 791, 1815,\n 151, 1175, 663, 1687, 407, 1431, 919, 1943,\n 87, 1111, 599, 1623, 343, 1367, 855, 1879,\n 215, 1239, 727, 1751, 471, 1495, 983, 2007,\n 55, 1079, 567, 1591, 311, 1335, 823, 1847,\n 183, 1207, 695, 1719, 439, 1463, 951, 1975,\n 119, 1143, 631, 1655, 375, 1399, 887, 1911,\n 247, 1271, 759, 1783, 503, 1527, 1015, 2039,\n 15, 1039, 527, 1551, 271, 1295, 783, 1807,\n 143, 1167, 655, 1679, 399, 1423, 911, 1935,\n 79, 1103, 591, 1615, 335, 1359, 847, 1871,\n 207, 1231, 719, 1743, 463, 1487, 975, 1999,\n 47, 1071, 559, 1583, 303, 1327, 815, 1839,\n 175, 1199, 687, 1711, 431, 1455, 943, 1967,\n 111, 1135, 623, 1647, 367, 1391, 879, 1903,\n 239, 1263, 751, 1775, 495, 1519, 1007, 2031,\n 31, 1055, 543, 1567, 287, 1311, 799, 1823,\n 159, 1183, 671, 1695, 415, 1439, 927, 1951,\n 95, 1119, 607, 1631, 351, 1375, 863, 1887,\n 223, 1247, 735, 1759, 479, 1503, 991, 2015,\n 63, 1087, 575, 1599, 319, 1343, 831, 1855,\n 191, 1215, 703, 1727, 447, 1471, 959, 1983,\n 127, 1151, 639, 1663, 383, 1407, 895, 1919,\n 255, 1279, 767, 1791, 511, 1535, 1023, 2047,\n};\n\nstatic BROTLI_INLINE void StoreStaticCommandHuffmanTree(\n size_t* storage_ix, uint8_t* storage) {\n BrotliWriteBits(\n 56, BROTLI_MAKE_UINT64_T(0x926244U, 0x16307003U), storage_ix, storage);\n BrotliWriteBits(3, 0x00000000U, storage_ix, storage);\n}\n\nstatic const BROTLI_MODEL(\"small\") uint16_t kStaticDistanceCodeBits[64] = {\n 0, 32, 16, 48, 8, 40, 24, 56, 4, 36, 20, 52, 12, 44, 28, 60,\n 2, 34, 18, 50, 10, 42, 26, 58, 6, 38, 22, 54, 14, 46, 30, 62,\n 1, 33, 17, 49, 9, 41, 25, 57, 5, 37, 21, 53, 13, 45, 29, 61,\n 3, 35, 19, 51, 11, 43, 27, 59, 7, 39, 23, 55, 15, 47, 31, 63,\n};\n\nstatic BROTLI_INLINE void StoreStaticDistanceHuffmanTree(\n size_t* storage_ix, uint8_t* storage) {\n BrotliWriteBits(28, 0x0369DC03u, storage_ix, storage);\n}\n/* GENERATED CODE END */\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_ENTROPY_ENCODE_STATIC_H_ */\n" }, { "path": "c/enc/fast_log.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"fast_log.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* \", \".join([\"%.16ff\" % x for x in [0.0]+[log2(x) for x in range(1, 256)]]) */\nconst BROTLI_MODEL(\"small\") double kBrotliLog2Table[BROTLI_LOG2_TABLE_SIZE] = {\n 0.0000000000000000f, 0.0000000000000000f, 1.0000000000000000f,\n 1.5849625007211563f, 2.0000000000000000f, 2.3219280948873622f,\n 2.5849625007211561f, 2.8073549220576042f, 3.0000000000000000f,\n 3.1699250014423126f, 3.3219280948873626f, 3.4594316186372978f,\n 3.5849625007211565f, 3.7004397181410922f, 3.8073549220576037f,\n 3.9068905956085187f, 4.0000000000000000f, 4.0874628412503400f,\n 4.1699250014423122f, 4.2479275134435852f, 4.3219280948873626f,\n 4.3923174227787607f, 4.4594316186372973f, 4.5235619560570131f,\n 4.5849625007211570f, 4.6438561897747244f, 4.7004397181410926f,\n 4.7548875021634691f, 4.8073549220576037f, 4.8579809951275728f,\n 4.9068905956085187f, 4.9541963103868758f, 5.0000000000000000f,\n 5.0443941193584534f, 5.0874628412503400f, 5.1292830169449664f,\n 5.1699250014423122f, 5.2094533656289501f, 5.2479275134435852f,\n 5.2854022188622487f, 5.3219280948873626f, 5.3575520046180838f,\n 5.3923174227787607f, 5.4262647547020979f, 5.4594316186372973f,\n 5.4918530963296748f, 5.5235619560570131f, 5.5545888516776376f,\n 5.5849625007211570f, 5.6147098441152083f, 5.6438561897747244f,\n 5.6724253419714961f, 5.7004397181410926f, 5.7279204545631996f,\n 5.7548875021634691f, 5.7813597135246599f, 5.8073549220576046f,\n 5.8328900141647422f, 5.8579809951275719f, 5.8826430493618416f,\n 5.9068905956085187f, 5.9307373375628867f, 5.9541963103868758f,\n 5.9772799234999168f, 6.0000000000000000f, 6.0223678130284544f,\n 6.0443941193584534f, 6.0660891904577721f, 6.0874628412503400f,\n 6.1085244567781700f, 6.1292830169449672f, 6.1497471195046822f,\n 6.1699250014423122f, 6.1898245588800176f, 6.2094533656289510f,\n 6.2288186904958804f, 6.2479275134435861f, 6.2667865406949019f,\n 6.2854022188622487f, 6.3037807481771031f, 6.3219280948873617f,\n 6.3398500028846252f, 6.3575520046180847f, 6.3750394313469254f,\n 6.3923174227787598f, 6.4093909361377026f, 6.4262647547020979f,\n 6.4429434958487288f, 6.4594316186372982f, 6.4757334309663976f,\n 6.4918530963296748f, 6.5077946401986964f, 6.5235619560570131f,\n 6.5391588111080319f, 6.5545888516776376f, 6.5698556083309478f,\n 6.5849625007211561f, 6.5999128421871278f, 6.6147098441152092f,\n 6.6293566200796095f, 6.6438561897747253f, 6.6582114827517955f,\n 6.6724253419714952f, 6.6865005271832185f, 6.7004397181410917f,\n 6.7142455176661224f, 6.7279204545631988f, 6.7414669864011465f,\n 6.7548875021634691f, 6.7681843247769260f, 6.7813597135246599f,\n 6.7944158663501062f, 6.8073549220576037f, 6.8201789624151887f,\n 6.8328900141647422f, 6.8454900509443757f, 6.8579809951275719f,\n 6.8703647195834048f, 6.8826430493618416f, 6.8948177633079437f,\n 6.9068905956085187f, 6.9188632372745955f, 6.9307373375628867f,\n 6.9425145053392399f, 6.9541963103868758f, 6.9657842846620879f,\n 6.9772799234999168f, 6.9886846867721664f, 7.0000000000000000f,\n 7.0112272554232540f, 7.0223678130284544f, 7.0334230015374501f,\n 7.0443941193584534f, 7.0552824355011898f, 7.0660891904577721f,\n 7.0768155970508317f, 7.0874628412503400f, 7.0980320829605272f,\n 7.1085244567781700f, 7.1189410727235076f, 7.1292830169449664f,\n 7.1395513523987937f, 7.1497471195046822f, 7.1598713367783891f,\n 7.1699250014423130f, 7.1799090900149345f, 7.1898245588800176f,\n 7.1996723448363644f, 7.2094533656289492f, 7.2191685204621621f,\n 7.2288186904958804f, 7.2384047393250794f, 7.2479275134435861f,\n 7.2573878426926521f, 7.2667865406949019f, 7.2761244052742384f,\n 7.2854022188622487f, 7.2946207488916270f, 7.3037807481771031f,\n 7.3128829552843557f, 7.3219280948873617f, 7.3309168781146177f,\n 7.3398500028846243f, 7.3487281542310781f, 7.3575520046180847f,\n 7.3663222142458151f, 7.3750394313469254f, 7.3837042924740528f,\n 7.3923174227787607f, 7.4008794362821844f, 7.4093909361377026f,\n 7.4178525148858991f, 7.4262647547020979f, 7.4346282276367255f,\n 7.4429434958487288f, 7.4512111118323299f, 7.4594316186372973f,\n 7.4676055500829976f, 7.4757334309663976f, 7.4838157772642564f,\n 7.4918530963296748f, 7.4998458870832057f, 7.5077946401986964f,\n 7.5156998382840436f, 7.5235619560570131f, 7.5313814605163119f,\n 7.5391588111080319f, 7.5468944598876373f, 7.5545888516776376f,\n 7.5622424242210728f, 7.5698556083309478f, 7.5774288280357487f,\n 7.5849625007211561f, 7.5924570372680806f, 7.5999128421871278f,\n 7.6073303137496113f, 7.6147098441152075f, 7.6220518194563764f,\n 7.6293566200796095f, 7.6366246205436488f, 7.6438561897747244f,\n 7.6510516911789290f, 7.6582114827517955f, 7.6653359171851765f,\n 7.6724253419714952f, 7.6794800995054464f, 7.6865005271832185f,\n 7.6934869574993252f, 7.7004397181410926f, 7.7073591320808825f,\n 7.7142455176661224f, 7.7210991887071856f, 7.7279204545631996f,\n 7.7347096202258392f, 7.7414669864011465f, 7.7481928495894596f,\n 7.7548875021634691f, 7.7615512324444795f, 7.7681843247769260f,\n 7.7747870596011737f, 7.7813597135246608f, 7.7879025593914317f,\n 7.7944158663501062f, 7.8008998999203047f, 7.8073549220576037f,\n 7.8137811912170374f, 7.8201789624151887f, 7.8265484872909159f,\n 7.8328900141647422f, 7.8392037880969445f, 7.8454900509443757f,\n 7.8517490414160571f, 7.8579809951275719f, 7.8641861446542798f,\n 7.8703647195834048f, 7.8765169465650002f, 7.8826430493618425f,\n 7.8887432488982601f, 7.8948177633079446f, 7.9008668079807496f,\n 7.9068905956085187f, 7.9128893362299619f, 7.9188632372745955f,\n 7.9248125036057813f, 7.9307373375628867f, 7.9366379390025719f,\n 7.9425145053392399f, 7.9483672315846778f, 7.9541963103868758f,\n 7.9600019320680806f, 7.9657842846620870f, 7.9715435539507720f,\n 7.9772799234999168f, 7.9829935746943104f, 7.9886846867721664f,\n 7.9943534368588578f\n};\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/fast_log.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Utilities for fast computation of logarithms. */\n\n#ifndef BROTLI_ENC_FAST_LOG_H_\n#define BROTLI_ENC_FAST_LOG_H_\n\n#include \n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic BROTLI_INLINE uint32_t Log2FloorNonZero(size_t n) {\n#if defined(BROTLI_BSR32)\n return BROTLI_BSR32((uint32_t)n);\n#else\n uint32_t result = 0;\n while (n >>= 1) result++;\n return result;\n#endif\n}\n\n#define BROTLI_LOG2_TABLE_SIZE 256\n\n/* A lookup table for small values of log2(int) to be used in entropy\n computation. */\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\")\ndouble kBrotliLog2Table[BROTLI_LOG2_TABLE_SIZE];\n\n/* Visual Studio 2012 and Android API levels < 18 do not have the log2()\n * function defined, so we use log() and a multiplication instead. */\n#if !defined(BROTLI_HAVE_LOG2)\n#if ((defined(_MSC_VER) && _MSC_VER <= 1700) || \\\n (defined(__ANDROID_API__) && __ANDROID_API__ < 18))\n#define BROTLI_HAVE_LOG2 0\n#else\n#define BROTLI_HAVE_LOG2 1\n#endif\n#endif\n\n#define LOG_2_INV 1.4426950408889634\n\n/* Faster logarithm for small integers, with the property of log2(0) == 0. */\nstatic BROTLI_INLINE double FastLog2(size_t v) {\n if (v < BROTLI_LOG2_TABLE_SIZE) {\n return kBrotliLog2Table[v];\n }\n#if !(BROTLI_HAVE_LOG2)\n return log((double)v) * LOG_2_INV;\n#else\n return log2((double)v);\n#endif\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_FAST_LOG_H_ */\n" }, { "path": "c/enc/find_match_length.h", "content": "/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Function to find maximal matching prefixes of strings. */\n\n#ifndef BROTLI_ENC_FIND_MATCH_LENGTH_H_\n#define BROTLI_ENC_FIND_MATCH_LENGTH_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Separate implementation for little-endian 64-bit targets, for speed. */\n#if defined(BROTLI_TZCNT64) && BROTLI_64_BITS && BROTLI_LITTLE_ENDIAN\nstatic BROTLI_INLINE size_t FindMatchLengthWithLimit(const uint8_t* s1,\n const uint8_t* s2,\n size_t limit) {\n const uint8_t *s1_orig = s1;\n for (; limit >= 8; limit -= 8) {\n uint64_t x = BROTLI_UNALIGNED_LOAD64LE(s2) ^\n BROTLI_UNALIGNED_LOAD64LE(s1);\n s2 += 8;\n if (x != 0) {\n size_t matching_bits = (size_t)BROTLI_TZCNT64(x);\n return (size_t)(s1 - s1_orig) + (matching_bits >> 3);\n }\n s1 += 8;\n }\n while (limit && *s1 == *s2) {\n limit--;\n ++s2;\n ++s1;\n }\n return (size_t)(s1 - s1_orig);\n}\n#else\nstatic BROTLI_INLINE size_t FindMatchLengthWithLimit(const uint8_t* s1,\n const uint8_t* s2,\n size_t limit) {\n size_t matched = 0;\n const uint8_t* s2_limit = s2 + limit;\n const uint8_t* s2_ptr = s2;\n /* Find out how long the match is. We loop over the data 32 bits at a\n time until we find a 32-bit block that doesn't match; then we find\n the first non-matching bit and use that to calculate the total\n length of the match. */\n while (s2_ptr <= s2_limit - 4 &&\n BrotliUnalignedRead32(s2_ptr) ==\n BrotliUnalignedRead32(s1 + matched)) {\n s2_ptr += 4;\n matched += 4;\n }\n while ((s2_ptr < s2_limit) && (s1[matched] == *s2_ptr)) {\n ++s2_ptr;\n ++matched;\n }\n return matched;\n}\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_FIND_MATCH_LENGTH_H_ */\n" }, { "path": "c/enc/hash.h", "content": "/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data. */\n\n#ifndef BROTLI_ENC_HASH_H_\n#define BROTLI_ENC_HASH_H_\n\n#include \"../common/constants.h\"\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \"compound_dictionary.h\"\n#include \"encoder_dict.h\"\n#include \"fast_log.h\"\n#include \"find_match_length.h\"\n#include \"hash_base.h\"\n#include \"matching_tag_mask.h\"\n#include \"memory.h\"\n#include \"params.h\"\n#include \"quality.h\"\n#include \"static_dict.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct {\n /**\n * Dynamically allocated areas; regular hasher uses one or two allocations;\n * \"composite\" hasher uses up to 4 allocations.\n */\n void* extra[4];\n\n /**\n * False before the first invocation of HasherSetup (where \"extra\" memory)\n * is allocated.\n */\n BROTLI_BOOL is_setup_;\n\n size_t dict_num_lookups;\n size_t dict_num_matches;\n\n BrotliHasherParams params;\n\n /**\n * False if hasher needs to be \"prepared\" before use (before the first\n * invocation of HasherSetup or after HasherReset). \"preparation\" is hasher\n * data initialization (using input ringbuffer).\n */\n BROTLI_BOOL is_prepared_;\n} HasherCommon;\n\n#define score_t size_t\n\nstatic const uint32_t kCutoffTransformsCount = 10;\n/* 0, 12, 27, 23, 42, 63, 56, 48, 59, 64 */\n/* 0+0, 4+8, 8+19, 12+11, 16+26, 20+43, 24+32, 28+20, 32+27, 36+28 */\nstatic const uint64_t kCutoffTransforms =\n BROTLI_MAKE_UINT64_T(0x071B520A, 0xDA2D3200);\n\ntypedef struct HasherSearchResult {\n size_t len;\n size_t distance;\n score_t score;\n int len_code_delta; /* == len_code - len */\n} HasherSearchResult;\n\nstatic BROTLI_INLINE void PrepareDistanceCache(\n int* BROTLI_RESTRICT distance_cache, const int num_distances) {\n if (num_distances > 4) {\n int last_distance = distance_cache[0];\n distance_cache[4] = last_distance - 1;\n distance_cache[5] = last_distance + 1;\n distance_cache[6] = last_distance - 2;\n distance_cache[7] = last_distance + 2;\n distance_cache[8] = last_distance - 3;\n distance_cache[9] = last_distance + 3;\n if (num_distances > 10) {\n int next_last_distance = distance_cache[1];\n distance_cache[10] = next_last_distance - 1;\n distance_cache[11] = next_last_distance + 1;\n distance_cache[12] = next_last_distance - 2;\n distance_cache[13] = next_last_distance + 2;\n distance_cache[14] = next_last_distance - 3;\n distance_cache[15] = next_last_distance + 3;\n }\n }\n}\n\n#define BROTLI_LITERAL_BYTE_SCORE 135\n#define BROTLI_DISTANCE_BIT_PENALTY 30\n/* Score must be positive after applying maximal penalty. */\n#define BROTLI_SCORE_BASE (BROTLI_DISTANCE_BIT_PENALTY * 8 * sizeof(size_t))\n\n/* Usually, we always choose the longest backward reference. This function\n allows for the exception of that rule.\n\n If we choose a backward reference that is further away, it will\n usually be coded with more bits. We approximate this by assuming\n log2(distance). If the distance can be expressed in terms of the\n last four distances, we use some heuristic constants to estimate\n the bits cost. For the first up to four literals we use the bit\n cost of the literals from the literal cost model, after that we\n use the average bit cost of the cost model.\n\n This function is used to sometimes discard a longer backward reference\n when it is not much longer and the bit cost for encoding it is more\n than the saved literals.\n\n backward_reference_offset MUST be positive. */\nstatic BROTLI_INLINE score_t BackwardReferenceScore(\n size_t copy_length, size_t backward_reference_offset) {\n return BROTLI_SCORE_BASE + BROTLI_LITERAL_BYTE_SCORE * (score_t)copy_length -\n BROTLI_DISTANCE_BIT_PENALTY * Log2FloorNonZero(backward_reference_offset);\n}\n\nstatic BROTLI_INLINE score_t BackwardReferenceScoreUsingLastDistance(\n size_t copy_length) {\n return BROTLI_LITERAL_BYTE_SCORE * (score_t)copy_length +\n BROTLI_SCORE_BASE + 15;\n}\n\nstatic BROTLI_INLINE score_t BackwardReferencePenaltyUsingLastDistance(\n size_t distance_short_code) {\n return (score_t)39 + ((0x1CA10 >> (distance_short_code & 0xE)) & 0xE);\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL TestStaticDictionaryItem(\n const BrotliEncoderDictionary* dictionary, size_t len, size_t word_idx,\n const uint8_t* data, size_t max_length, size_t max_backward,\n size_t max_distance, HasherSearchResult* out) {\n size_t offset;\n size_t matchlen;\n size_t backward;\n score_t score;\n offset = dictionary->words->offsets_by_length[len] + len * word_idx;\n if (len > max_length) {\n return BROTLI_FALSE;\n }\n\n matchlen =\n FindMatchLengthWithLimit(data, &dictionary->words->data[offset], len);\n if (matchlen + dictionary->cutoffTransformsCount <= len || matchlen == 0) {\n return BROTLI_FALSE;\n }\n {\n size_t cut = len - matchlen;\n size_t transform_id = (cut << 2) +\n (size_t)((dictionary->cutoffTransforms >> (cut * 6)) & 0x3F);\n backward = max_backward + 1 + word_idx +\n (transform_id << dictionary->words->size_bits_by_length[len]);\n }\n if (backward > max_distance) {\n return BROTLI_FALSE;\n }\n score = BackwardReferenceScore(matchlen, backward);\n if (score < out->score) {\n return BROTLI_FALSE;\n }\n out->len = matchlen;\n out->len_code_delta = (int)len - (int)matchlen;\n out->distance = backward;\n out->score = score;\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_INLINE void SearchInStaticDictionary(\n const BrotliEncoderDictionary* dictionary,\n HasherCommon* common, const uint8_t* data, size_t max_length,\n size_t max_backward, size_t max_distance,\n HasherSearchResult* out, BROTLI_BOOL shallow) {\n size_t key;\n size_t i;\n if (common->dict_num_matches < (common->dict_num_lookups >> 7)) {\n return;\n }\n key = Hash14(data) << 1;\n for (i = 0; i < (shallow ? 1u : 2u); ++i, ++key) {\n common->dict_num_lookups++;\n if (dictionary->hash_table_lengths[key] != 0) {\n BROTLI_BOOL item_matches = TestStaticDictionaryItem(\n dictionary, dictionary->hash_table_lengths[key],\n dictionary->hash_table_words[key], data,\n max_length, max_backward, max_distance, out);\n if (item_matches) {\n common->dict_num_matches++;\n }\n }\n }\n}\n\ntypedef struct BackwardMatch {\n uint32_t distance;\n uint32_t length_and_code;\n} BackwardMatch;\n\nstatic BROTLI_INLINE void InitBackwardMatch(BackwardMatch* self,\n size_t dist, size_t len) {\n self->distance = (uint32_t)dist;\n self->length_and_code = (uint32_t)(len << 5);\n}\n\nstatic BROTLI_INLINE void InitDictionaryBackwardMatch(BackwardMatch* self,\n size_t dist, size_t len, size_t len_code) {\n self->distance = (uint32_t)dist;\n self->length_and_code =\n (uint32_t)((len << 5) | (len == len_code ? 0 : len_code));\n}\n\nstatic BROTLI_INLINE size_t BackwardMatchLength(const BackwardMatch* self) {\n return self->length_and_code >> 5;\n}\n\nstatic BROTLI_INLINE size_t BackwardMatchLengthCode(const BackwardMatch* self) {\n size_t code = self->length_and_code & 31;\n return code ? code : BackwardMatchLength(self);\n}\n\n#define EXPAND_CAT(a, b) CAT(a, b)\n#define CAT(a, b) a ## b\n#define FN(X) EXPAND_CAT(X, HASHER())\n\n#define HASHER() H10\n#define BUCKET_BITS 17\n#define MAX_TREE_SEARCH_DEPTH 64\n#define MAX_TREE_COMP_LENGTH 128\n#include \"hash_to_binary_tree_inc.h\" /* NOLINT(build/include) */\n#undef MAX_TREE_SEARCH_DEPTH\n#undef MAX_TREE_COMP_LENGTH\n#undef BUCKET_BITS\n#undef HASHER\n/* MAX_NUM_MATCHES == 64 + MAX_TREE_SEARCH_DEPTH */\n#define MAX_NUM_MATCHES_H10 128\n\n/* For BUCKET_SWEEP_BITS == 0, enabling the dictionary lookup makes compression\n a little faster (0.5% - 1%) and it compresses 0.15% better on small text\n and HTML inputs. */\n\n#define HASHER() H2\n#define BUCKET_BITS 16\n#define BUCKET_SWEEP_BITS 0\n#define HASH_LEN 5\n#define USE_DICTIONARY 1\n#include \"hash_longest_match_quickly_inc.h\" /* NOLINT(build/include) */\n#undef BUCKET_SWEEP_BITS\n#undef USE_DICTIONARY\n#undef HASHER\n\n#define HASHER() H3\n#define BUCKET_SWEEP_BITS 1\n#define USE_DICTIONARY 0\n#include \"hash_longest_match_quickly_inc.h\" /* NOLINT(build/include) */\n#undef USE_DICTIONARY\n#undef BUCKET_SWEEP_BITS\n#undef BUCKET_BITS\n#undef HASHER\n\n#define HASHER() H4\n#define BUCKET_BITS 17\n#define BUCKET_SWEEP_BITS 2\n#define USE_DICTIONARY 1\n#include \"hash_longest_match_quickly_inc.h\" /* NOLINT(build/include) */\n#undef USE_DICTIONARY\n#undef HASH_LEN\n#undef BUCKET_SWEEP_BITS\n#undef BUCKET_BITS\n#undef HASHER\n\n#define HASHER() H5\n#include \"hash_longest_match_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n\n#define HASHER() H6\n#include \"hash_longest_match64_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n#define HASHER() H58\n#include \"hash_longest_match_simd_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n\n#define HASHER() H68\n#include \"hash_longest_match64_simd_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n#endif\n\n#define BUCKET_BITS 15\n\n#define NUM_LAST_DISTANCES_TO_CHECK 4\n#define NUM_BANKS 1\n#define BANK_BITS 16\n#define HASHER() H40\n#include \"hash_forgetful_chain_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n#undef NUM_LAST_DISTANCES_TO_CHECK\n\n#define NUM_LAST_DISTANCES_TO_CHECK 10\n#define HASHER() H41\n#include \"hash_forgetful_chain_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n#undef NUM_LAST_DISTANCES_TO_CHECK\n#undef NUM_BANKS\n#undef BANK_BITS\n\n#define NUM_LAST_DISTANCES_TO_CHECK 16\n#define NUM_BANKS 512\n#define BANK_BITS 9\n#define HASHER() H42\n#include \"hash_forgetful_chain_inc.h\" /* NOLINT(build/include) */\n#undef HASHER\n#undef NUM_LAST_DISTANCES_TO_CHECK\n#undef NUM_BANKS\n#undef BANK_BITS\n\n#undef BUCKET_BITS\n\n#define HASHER() H54\n#define BUCKET_BITS 20\n#define BUCKET_SWEEP_BITS 2\n#define HASH_LEN 7\n#define USE_DICTIONARY 0\n#include \"hash_longest_match_quickly_inc.h\" /* NOLINT(build/include) */\n#undef USE_DICTIONARY\n#undef HASH_LEN\n#undef BUCKET_SWEEP_BITS\n#undef BUCKET_BITS\n#undef HASHER\n\n/* fast large window hashers */\n\n#define HASHER() HROLLING_FAST\n#define CHUNKLEN 32\n#define JUMP 4\n#define NUMBUCKETS 16777216\n#define MASK ((NUMBUCKETS * 64) - 1)\n#include \"hash_rolling_inc.h\" /* NOLINT(build/include) */\n#undef JUMP\n#undef HASHER\n\n\n#define HASHER() HROLLING\n#define JUMP 1\n#include \"hash_rolling_inc.h\" /* NOLINT(build/include) */\n#undef MASK\n#undef NUMBUCKETS\n#undef JUMP\n#undef CHUNKLEN\n#undef HASHER\n\n#define HASHER() H35\n#define HASHER_A H3\n#define HASHER_B HROLLING_FAST\n#include \"hash_composite_inc.h\" /* NOLINT(build/include) */\n#undef HASHER_A\n#undef HASHER_B\n#undef HASHER\n\n#define HASHER() H55\n#define HASHER_A H54\n#define HASHER_B HROLLING_FAST\n#include \"hash_composite_inc.h\" /* NOLINT(build/include) */\n#undef HASHER_A\n#undef HASHER_B\n#undef HASHER\n\n#define HASHER() H65\n#define HASHER_A H6\n#define HASHER_B HROLLING\n#include \"hash_composite_inc.h\" /* NOLINT(build/include) */\n#undef HASHER_A\n#undef HASHER_B\n#undef HASHER\n\n#undef FN\n#undef CAT\n#undef EXPAND_CAT\n\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n#define FOR_SIMPLE_HASHERS(H) \\\n H(2) H(3) H(4) H(5) H(6) H(40) H(41) H(42) H(54) H(58) H(68)\n#else\n#define FOR_SIMPLE_HASHERS(H) \\\n H(2) H(3) H(4) H(5) H(6) H(40) H(41) H(42) H(54)\n#endif\n#define FOR_COMPOSITE_HASHERS(H) H(35) H(55) H(65)\n#define FOR_GENERIC_HASHERS(H) FOR_SIMPLE_HASHERS(H) FOR_COMPOSITE_HASHERS(H)\n#define FOR_ALL_HASHERS(H) FOR_GENERIC_HASHERS(H) H(10)\n\ntypedef struct {\n HasherCommon common;\n\n union {\n#define MEMBER_(N) \\\n H ## N _H ## N;\n FOR_ALL_HASHERS(MEMBER_)\n#undef MEMBER_\n } privat;\n} Hasher;\n\n/* MUST be invoked before any other method. */\nstatic BROTLI_INLINE void HasherInit(Hasher* hasher) {\n hasher->common.is_setup_ = BROTLI_FALSE;\n hasher->common.extra[0] = NULL;\n hasher->common.extra[1] = NULL;\n hasher->common.extra[2] = NULL;\n hasher->common.extra[3] = NULL;\n}\n\nstatic BROTLI_INLINE void DestroyHasher(MemoryManager* m, Hasher* hasher) {\n if (hasher->common.extra[0] != NULL) BROTLI_FREE(m, hasher->common.extra[0]);\n if (hasher->common.extra[1] != NULL) BROTLI_FREE(m, hasher->common.extra[1]);\n if (hasher->common.extra[2] != NULL) BROTLI_FREE(m, hasher->common.extra[2]);\n if (hasher->common.extra[3] != NULL) BROTLI_FREE(m, hasher->common.extra[3]);\n}\n\nstatic BROTLI_INLINE void HasherReset(Hasher* hasher) {\n hasher->common.is_prepared_ = BROTLI_FALSE;\n}\n\nstatic BROTLI_INLINE void HasherSize(const BrotliEncoderParams* params,\n BROTLI_BOOL one_shot, const size_t input_size, size_t* alloc_size) {\n switch (params->hasher.type) {\n#define SIZE_(N) \\\n case N: \\\n HashMemAllocInBytesH ## N(params, one_shot, input_size, alloc_size); \\\n break;\n FOR_ALL_HASHERS(SIZE_)\n#undef SIZE_\n default:\n break;\n }\n}\n\nstatic BROTLI_INLINE void HasherSetup(MemoryManager* m, Hasher* hasher,\n BrotliEncoderParams* params, const uint8_t* data, size_t position,\n size_t input_size, BROTLI_BOOL is_last) {\n BROTLI_BOOL one_shot = (position == 0 && is_last);\n if (!hasher->common.is_setup_) {\n size_t alloc_size[4] = {0};\n size_t i;\n ChooseHasher(params, ¶ms->hasher);\n hasher->common.params = params->hasher;\n hasher->common.dict_num_lookups = 0;\n hasher->common.dict_num_matches = 0;\n HasherSize(params, one_shot, input_size, alloc_size);\n for (i = 0; i < 4; ++i) {\n if (alloc_size[i] == 0) continue;\n hasher->common.extra[i] = BROTLI_ALLOC(m, uint8_t, alloc_size[i]);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(hasher->common.extra[i])) return;\n }\n switch (hasher->common.params.type) {\n#define INITIALIZE_(N) \\\n case N: \\\n InitializeH ## N(&hasher->common, \\\n &hasher->privat._H ## N, params); \\\n break;\n FOR_ALL_HASHERS(INITIALIZE_);\n#undef INITIALIZE_\n default:\n break;\n }\n HasherReset(hasher);\n hasher->common.is_setup_ = BROTLI_TRUE;\n }\n\n if (!hasher->common.is_prepared_) {\n switch (hasher->common.params.type) {\n#define PREPARE_(N) \\\n case N: \\\n PrepareH ## N( \\\n &hasher->privat._H ## N, \\\n one_shot, input_size, data); \\\n break;\n FOR_ALL_HASHERS(PREPARE_)\n#undef PREPARE_\n default: break;\n }\n hasher->common.is_prepared_ = BROTLI_TRUE;\n }\n}\n\nstatic BROTLI_INLINE void InitOrStitchToPreviousBlock(\n MemoryManager* m, Hasher* hasher, const uint8_t* data, size_t mask,\n BrotliEncoderParams* params, size_t position, size_t input_size,\n BROTLI_BOOL is_last) {\n HasherSetup(m, hasher, params, data, position, input_size, is_last);\n if (BROTLI_IS_OOM(m)) return;\n switch (hasher->common.params.type) {\n#define INIT_(N) \\\n case N: \\\n StitchToPreviousBlockH ## N( \\\n &hasher->privat._H ## N, \\\n input_size, position, data, mask); \\\n break;\n FOR_ALL_HASHERS(INIT_)\n#undef INIT_\n default: break;\n }\n}\n\n/* NB: when seamless dictionary-ring-buffer copies are implemented, don't forget\n to add proper guards for non-zero-BROTLI_PARAM_STREAM_OFFSET. */\nstatic BROTLI_INLINE void FindCompoundDictionaryMatch(\n const PreparedDictionary* self, const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const int* BROTLI_RESTRICT distance_cache,\n const size_t cur_ix, const size_t max_length, const size_t distance_offset,\n const size_t max_distance, HasherSearchResult* BROTLI_RESTRICT out) {\n const uint32_t source_size = self->source_size;\n const size_t boundary = distance_offset - source_size;\n const uint32_t hash_bits = self->hash_bits;\n const uint32_t bucket_bits = self->bucket_bits;\n const uint32_t slot_bits = self->slot_bits;\n\n const uint32_t hash_shift = 64u - bucket_bits;\n const uint32_t slot_mask = (~((uint32_t)0U)) >> (32 - slot_bits);\n const uint64_t hash_mask = (~((uint64_t)0U)) >> (64 - hash_bits);\n\n const uint32_t* slot_offsets = (uint32_t*)(&self[1]);\n const uint16_t* heads = (uint16_t*)(&slot_offsets[(size_t)1u << slot_bits]);\n const uint32_t* items = (uint32_t*)(&heads[(size_t)1u << bucket_bits]);\n const uint8_t* source = NULL;\n\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n const uint64_t h =\n (BROTLI_UNALIGNED_LOAD64LE(&data[cur_ix_masked]) & hash_mask) *\n kPreparedDictionaryHashMul64Long;\n const uint32_t key = (uint32_t)(h >> hash_shift);\n const uint32_t slot = key & slot_mask;\n const uint32_t head = heads[key];\n const uint32_t* BROTLI_RESTRICT chain = &items[slot_offsets[slot] + head];\n uint32_t item = (head == 0xFFFF) ? 1 : 0;\n\n const void* tail = (void*)&items[self->num_items];\n if (self->magic == kPreparedDictionaryMagic) {\n source = (const uint8_t*)tail;\n } else {\n /* kLeanPreparedDictionaryMagic */\n source = (const uint8_t*)BROTLI_UNALIGNED_LOAD_PTR((const uint8_t**)tail);\n }\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n for (i = 0; i < 4; ++i) {\n const size_t distance = (size_t)distance_cache[i];\n size_t offset;\n size_t limit;\n size_t len;\n if (distance <= boundary || distance > distance_offset) continue;\n offset = distance_offset - distance;\n limit = source_size - offset;\n limit = limit > max_length ? max_length : limit;\n len = FindMatchLengthWithLimit(&source[offset], &data[cur_ix_masked],\n limit);\n if (len >= 2) {\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n if (len > best_len) best_len = len;\n out->len = len;\n out->len_code_delta = 0;\n out->distance = distance;\n out->score = best_score;\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n while (item == 0) {\n size_t offset;\n size_t distance;\n size_t limit;\n item = *chain;\n chain++;\n offset = item & 0x7FFFFFFF;\n item &= 0x80000000;\n distance = distance_offset - offset;\n limit = source_size - offset;\n limit = (limit > max_length) ? max_length : limit;\n if (distance > max_distance) continue;\n if (cur_ix_masked + best_len > ring_buffer_mask || best_len >= limit ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&source[offset + best_len - 3])) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&source[offset],\n &data[cur_ix_masked],\n limit);\n if (len >= 4) {\n score_t score = BackwardReferenceScore(len, distance);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->len_code_delta = 0;\n out->distance = distance;\n out->score = best_score;\n }\n }\n }\n }\n}\n\n/* NB: when seamless dictionary-ring-buffer copies are implemented, don't forget\n to add proper guards for non-zero-BROTLI_PARAM_STREAM_OFFSET. */\nstatic BROTLI_INLINE size_t FindAllCompoundDictionaryMatches(\n const PreparedDictionary* self, const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const size_t cur_ix, const size_t min_length,\n const size_t max_length, const size_t distance_offset,\n const size_t max_distance, BackwardMatch* matches, size_t match_limit) {\n const uint32_t source_size = self->source_size;\n const uint32_t hash_bits = self->hash_bits;\n const uint32_t bucket_bits = self->bucket_bits;\n const uint32_t slot_bits = self->slot_bits;\n\n const uint32_t hash_shift = 64u - bucket_bits;\n const uint32_t slot_mask = (~((uint32_t)0U)) >> (32 - slot_bits);\n const uint64_t hash_mask = (~((uint64_t)0U)) >> (64 - hash_bits);\n\n const uint32_t* slot_offsets = (uint32_t*)(&self[1]);\n const uint16_t* heads = (uint16_t*)(&slot_offsets[(size_t)1u << slot_bits]);\n const uint32_t* items = (uint32_t*)(&heads[(size_t)1u << bucket_bits]);\n const uint8_t* source = NULL;\n\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n size_t best_len = min_length;\n const uint64_t h =\n (BROTLI_UNALIGNED_LOAD64LE(&data[cur_ix_masked]) & hash_mask) *\n kPreparedDictionaryHashMul64Long;\n const uint32_t key = (uint32_t)(h >> hash_shift);\n const uint32_t slot = key & slot_mask;\n const uint32_t head = heads[key];\n const uint32_t* BROTLI_RESTRICT chain = &items[slot_offsets[slot] + head];\n uint32_t item = (head == 0xFFFF) ? 1 : 0;\n size_t found = 0;\n\n const void* tail = (void*)&items[self->num_items];\n if (self->magic == kPreparedDictionaryMagic) {\n source = (const uint8_t*)tail;\n } else {\n /* kLeanPreparedDictionaryMagic */\n source = (const uint8_t*)BROTLI_UNALIGNED_LOAD_PTR((const uint8_t**)tail);\n }\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n while (item == 0) {\n size_t offset;\n size_t distance;\n size_t limit;\n size_t len;\n item = *chain;\n chain++;\n offset = item & 0x7FFFFFFF;\n item &= 0x80000000;\n distance = distance_offset - offset;\n limit = source_size - offset;\n limit = (limit > max_length) ? max_length : limit;\n if (distance > max_distance) continue;\n if (cur_ix_masked + best_len > ring_buffer_mask ||\n best_len >= limit ||\n data[cur_ix_masked + best_len] != source[offset + best_len]) {\n continue;\n }\n len = FindMatchLengthWithLimit(\n &source[offset], &data[cur_ix_masked], limit);\n if (len > best_len) {\n best_len = len;\n InitBackwardMatch(matches++, distance, len);\n found++;\n if (found == match_limit) break;\n }\n }\n return found;\n}\n\nstatic BROTLI_INLINE void LookupCompoundDictionaryMatch(\n const CompoundDictionary* addon, const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const int* BROTLI_RESTRICT distance_cache,\n const size_t cur_ix, const size_t max_length,\n const size_t max_ring_buffer_distance, const size_t max_distance,\n HasherSearchResult* sr) {\n size_t base_offset = max_ring_buffer_distance + 1 + addon->total_size - 1;\n size_t d;\n for (d = 0; d < addon->num_chunks; ++d) {\n /* Only one prepared dictionary type is currently supported. */\n FindCompoundDictionaryMatch(\n (const PreparedDictionary*)addon->chunks[d], data, ring_buffer_mask,\n distance_cache, cur_ix, max_length,\n base_offset - addon->chunk_offsets[d], max_distance, sr);\n }\n}\n\nstatic BROTLI_INLINE size_t LookupAllCompoundDictionaryMatches(\n const CompoundDictionary* addon, const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const size_t cur_ix, size_t min_length,\n const size_t max_length, const size_t max_ring_buffer_distance,\n const size_t max_distance, BackwardMatch* matches,\n size_t match_limit) {\n size_t base_offset = max_ring_buffer_distance + 1 + addon->total_size - 1;\n size_t d;\n size_t total_found = 0;\n for (d = 0; d < addon->num_chunks; ++d) {\n /* Only one prepared dictionary type is currently supported. */\n total_found += FindAllCompoundDictionaryMatches(\n (const PreparedDictionary*)addon->chunks[d], data, ring_buffer_mask,\n cur_ix, min_length, max_length, base_offset - addon->chunk_offsets[d],\n max_distance, matches + total_found, match_limit - total_found);\n if (total_found == match_limit) break;\n if (total_found > 0) {\n min_length = BackwardMatchLength(&matches[total_found - 1]);\n }\n }\n return total_found;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_HASH_H_ */\n" }, { "path": "c/enc/hash_base.h", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Basic common hash functions / constants. */\n\n#ifndef THIRD_PARTY_BROTLI_ENC_HASH_BASE_H_\n#define THIRD_PARTY_BROTLI_ENC_HASH_BASE_H_\n\n#include \"../common/platform.h\"\n\n/* kHashMul32 multiplier has these properties:\n * The multiplier must be odd. Otherwise we may lose the highest bit.\n * No long streaks of ones or zeros.\n * There is no effort to ensure that it is a prime, the oddity is enough\n for this use.\n * The number has been tuned heuristically against compression benchmarks. */\nstatic const uint32_t kHashMul32 = 0x1E35A7BD;\nstatic const uint64_t kHashMul64 =\n BROTLI_MAKE_UINT64_T(0x1FE35A7Bu, 0xD3579BD3u);\n\nstatic BROTLI_INLINE uint32_t Hash14(const uint8_t* data) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return h >> (32 - 14);\n}\n\nstatic BROTLI_INLINE uint32_t Hash15(const uint8_t* data) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return h >> (32 - 15);\n}\n\n#endif // THIRD_PARTY_BROTLI_ENC_HASH_BASE_H_\n" }, { "path": "c/enc/hash_composite_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2018 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, HASHER_A, HASHER_B */\n\n/* Composite hasher: This hasher allows to combine two other hashers, HASHER_A\n and HASHER_B. */\n\n#define HashComposite HASHER()\n\n#define FN_A(X) EXPAND_CAT(X, HASHER_A)\n#define FN_B(X) EXPAND_CAT(X, HASHER_B)\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) {\n size_t a = FN_A(HashTypeLength)();\n size_t b = FN_B(HashTypeLength)();\n return a > b ? a : b;\n}\n\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) {\n size_t a = FN_A(StoreLookahead)();\n size_t b = FN_B(StoreLookahead)();\n return a > b ? a : b;\n}\n\ntypedef struct HashComposite {\n HASHER_A ha;\n HASHER_B hb;\n HasherCommon ha_common;\n HasherCommon hb_common;\n\n /* Shortcuts. */\n HasherCommon* common;\n\n BROTLI_BOOL fresh;\n const BrotliEncoderParams* params;\n} HashComposite;\n\nstatic void FN(Initialize)(HasherCommon* common,\n HashComposite* BROTLI_RESTRICT self, const BrotliEncoderParams* params) {\n self->common = common;\n\n self->ha_common = *self->common;\n self->hb_common = *self->common;\n self->fresh = BROTLI_TRUE;\n self->params = params;\n /* TODO(lode): Initialize of the hashers is deferred to Prepare (and params\n remembered here) because we don't get the one_shot and input_size params\n here that are needed to know the memory size of them. Instead provide\n those params to all hashers FN(Initialize) */\n}\n\nstatic void FN(Prepare)(\n HashComposite* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n if (self->fresh) {\n self->fresh = BROTLI_FALSE;\n self->ha_common.extra[0] = self->common->extra[0];\n self->ha_common.extra[1] = self->common->extra[1];\n self->ha_common.extra[2] = NULL;\n self->ha_common.extra[3] = NULL;\n self->hb_common.extra[0] = self->common->extra[2];\n self->hb_common.extra[1] = self->common->extra[3];\n self->hb_common.extra[2] = NULL;\n self->hb_common.extra[3] = NULL;\n\n FN_A(Initialize)(&self->ha_common, &self->ha, self->params);\n FN_B(Initialize)(&self->hb_common, &self->hb, self->params);\n }\n FN_A(Prepare)(&self->ha, one_shot, input_size, data);\n FN_B(Prepare)(&self->hb, one_shot, input_size, data);\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t alloc_size_a[4] = {0};\n size_t alloc_size_b[4] = {0};\n FN_A(HashMemAllocInBytes)(params, one_shot, input_size, alloc_size_a);\n FN_B(HashMemAllocInBytes)(params, one_shot, input_size, alloc_size_b);\n /* Should never happen. */\n if (alloc_size_a[2] != 0 || alloc_size_a[3] != 0) exit(EXIT_FAILURE);\n if (alloc_size_b[2] != 0 || alloc_size_b[3] != 0) exit(EXIT_FAILURE);\n alloc_size[0] = alloc_size_a[0];\n alloc_size[1] = alloc_size_a[1];\n alloc_size[2] = alloc_size_b[0];\n alloc_size[3] = alloc_size_b[1];\n}\n\nstatic BROTLI_INLINE void FN(Store)(HashComposite* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask, const size_t ix) {\n FN_A(Store)(&self->ha, data, mask, ix);\n FN_B(Store)(&self->hb, data, mask, ix);\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(\n HashComposite* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix_start,\n const size_t ix_end) {\n FN_A(StoreRange)(&self->ha, data, mask, ix_start, ix_end);\n FN_B(StoreRange)(&self->hb, data, mask, ix_start, ix_end);\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashComposite* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ring_buffer_mask) {\n FN_A(StitchToPreviousBlock)(&self->ha, num_bytes, position,\n ringbuffer, ring_buffer_mask);\n FN_B(StitchToPreviousBlock)(&self->hb, num_bytes, position,\n ringbuffer, ring_buffer_mask);\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashComposite* BROTLI_RESTRICT self, int* BROTLI_RESTRICT distance_cache) {\n FN_A(PrepareDistanceCache)(&self->ha, distance_cache);\n FN_B(PrepareDistanceCache)(&self->hb, distance_cache);\n}\n\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashComposite* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n FN_A(FindLongestMatch)(&self->ha, dictionary, data, ring_buffer_mask,\n distance_cache, cur_ix, max_length, max_backward, dictionary_distance,\n max_distance, out);\n FN_B(FindLongestMatch)(&self->hb, dictionary, data, ring_buffer_mask,\n distance_cache, cur_ix, max_length, max_backward, dictionary_distance,\n max_distance, out);\n}\n\n#undef HashComposite\n" }, { "path": "c/enc/hash_forgetful_chain_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, BUCKET_BITS, NUM_BANKS, BANK_BITS,\n NUM_LAST_DISTANCES_TO_CHECK */\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n\n Hashes are stored in chains which are bucketed to groups. Group of chains\n share a storage \"bank\". When more than \"bank size\" chain nodes are added,\n oldest nodes are replaced; this way several chains may share a tail. */\n\n#define HashForgetfulChain HASHER()\n\n#define BANK_SIZE (1 << BANK_BITS)\n\n/* Number of hash buckets. */\n#define BUCKET_SIZE (1 << BUCKET_BITS)\n\n#define CAPPED_CHAINS 0\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 4; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 4; }\n\n/* HashBytes is the function that chooses the bucket to place the address in.*/\nstatic BROTLI_INLINE size_t FN(HashBytes)(const uint8_t* BROTLI_RESTRICT data) {\n const uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return h >> (32 - BUCKET_BITS);\n}\n\ntypedef struct FN(Slot) {\n uint16_t delta;\n uint16_t next;\n} FN(Slot);\n\ntypedef struct FN(Bank) {\n FN(Slot) slots[BANK_SIZE];\n} FN(Bank);\n\ntypedef struct HashForgetfulChain {\n uint16_t free_slot_idx[NUM_BANKS]; /* Up to 1KiB. Move to dynamic? */\n size_t max_hops;\n\n /* Shortcuts. */\n void* extra[2];\n HasherCommon* common;\n\n /* --- Dynamic size members --- */\n\n /* uint32_t addr[BUCKET_SIZE]; */\n\n /* uint16_t head[BUCKET_SIZE]; */\n\n /* Truncated hash used for quick rejection of \"distance cache\" candidates. */\n /* uint8_t tiny_hash[65536];*/\n\n /* FN(Bank) banks[NUM_BANKS]; */\n} HashForgetfulChain;\n\nstatic uint32_t* FN(Addr)(void* extra) {\n return (uint32_t*)extra;\n}\n\nstatic uint16_t* FN(Head)(void* extra) {\n return (uint16_t*)(&FN(Addr)(extra)[BUCKET_SIZE]);\n}\n\nstatic uint8_t* FN(TinyHash)(void* extra) {\n return (uint8_t*)(&FN(Head)(extra)[BUCKET_SIZE]);\n}\n\nstatic FN(Bank)* FN(Banks)(void* extra) {\n return (FN(Bank)*)(extra);\n}\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashForgetfulChain* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common = common;\n self->extra[0] = common->extra[0];\n self->extra[1] = common->extra[1];\n\n self->max_hops = (params->quality > 6 ? 7u : 8u) << (params->quality - 4);\n}\n\nstatic void FN(Prepare)(\n HashForgetfulChain* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint32_t* BROTLI_RESTRICT addr = FN(Addr)(self->extra[0]);\n uint16_t* BROTLI_RESTRICT head = FN(Head)(self->extra[0]);\n uint8_t* BROTLI_RESTRICT tiny_hash = FN(TinyHash)(self->extra[0]);\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = BUCKET_SIZE >> 6;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n size_t bucket = FN(HashBytes)(&data[i]);\n /* See InitEmpty comment. */\n addr[bucket] = 0xCCCCCCCC;\n head[bucket] = 0xCCCC;\n }\n } else {\n /* Fill |addr| array with 0xCCCCCCCC value. Because of wrapping, position\n processed by hasher never reaches 3GB + 64M; this makes all new chains\n to be terminated after the first node. */\n memset(addr, 0xCC, sizeof(uint32_t) * BUCKET_SIZE);\n memset(head, 0, sizeof(uint16_t) * BUCKET_SIZE);\n }\n memset(tiny_hash, 0, sizeof(uint8_t) * 65536);\n memset(self->free_slot_idx, 0, sizeof(self->free_slot_idx));\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n BROTLI_UNUSED(params);\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint32_t) * BUCKET_SIZE +\n sizeof(uint16_t) * BUCKET_SIZE + sizeof(uint8_t) * 65536;\n alloc_size[1] = sizeof(FN(Bank)) * NUM_BANKS;\n}\n\n/* Look at 4 bytes at &data[ix & mask]. Compute a hash from these, and prepend\n node to corresponding chain; also update tiny_hash for current position. */\nstatic BROTLI_INLINE void FN(Store)(HashForgetfulChain* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask, const size_t ix) {\n uint32_t* BROTLI_RESTRICT addr = FN(Addr)(self->extra[0]);\n uint16_t* BROTLI_RESTRICT head = FN(Head)(self->extra[0]);\n uint8_t* BROTLI_RESTRICT tiny_hash = FN(TinyHash)(self->extra[0]);\n FN(Bank)* BROTLI_RESTRICT banks = FN(Banks)(self->extra[1]);\n const size_t key = FN(HashBytes)(&data[ix & mask]);\n const size_t bank = key & (NUM_BANKS - 1);\n const size_t idx = self->free_slot_idx[bank]++ & (BANK_SIZE - 1);\n size_t delta = ix - addr[key];\n tiny_hash[(uint16_t)ix] = (uint8_t)key;\n if (delta > 0xFFFF) delta = CAPPED_CHAINS ? 0 : 0xFFFF;\n banks[bank].slots[idx].delta = (uint16_t)delta;\n banks[bank].slots[idx].next = head[key];\n addr[key] = (uint32_t)ix;\n head[key] = (uint16_t)idx;\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(\n HashForgetfulChain* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashForgetfulChain* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ring_buffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ring_buffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ring_buffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ring_buffer_mask, position - 1);\n }\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashForgetfulChain* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n BROTLI_UNUSED(self);\n PrepareDistanceCache(distance_cache, NUM_LAST_DISTANCES_TO_CHECK);\n}\n\n/* Find a longest backward match of &data[cur_ix] up to the length of\n max_length and stores the position cur_ix in the hash table.\n\n REQUIRES: FN(PrepareDistanceCache) must be invoked for current distance cache\n values; if this method is invoked repeatedly with the same distance\n cache values, it is enough to invoke FN(PrepareDistanceCache) once.\n\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashForgetfulChain* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache,\n const size_t cur_ix, const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint32_t* BROTLI_RESTRICT addr = FN(Addr)(self->extra[0]);\n uint16_t* BROTLI_RESTRICT head = FN(Head)(self->extra[0]);\n uint8_t* BROTLI_RESTRICT tiny_hashes = FN(TinyHash)(self->extra[0]);\n FN(Bank)* BROTLI_RESTRICT banks = FN(Banks)(self->extra[1]);\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* Don't accept a short copy from far away. */\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n const size_t key = FN(HashBytes)(&data[cur_ix_masked]);\n const uint8_t tiny_hash = (uint8_t)(key);\n out->len = 0;\n out->len_code_delta = 0;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n /* Try last distance first. */\n for (i = 0; i < NUM_LAST_DISTANCES_TO_CHECK; ++i) {\n const size_t backward = (size_t)distance_cache[i];\n size_t prev_ix = (cur_ix - backward);\n /* For distance code 0 we want to consider 2-byte matches. */\n if (i > 0 && tiny_hashes[(uint16_t)prev_ix] != tiny_hash) continue;\n if (prev_ix >= cur_ix || backward > max_backward) {\n continue;\n }\n prev_ix &= ring_buffer_mask;\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 2) {\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n {\n const size_t bank = key & (NUM_BANKS - 1);\n size_t backward = 0;\n size_t hops = self->max_hops;\n size_t delta = cur_ix - addr[key];\n size_t slot = head[key];\n while (hops--) {\n size_t prev_ix;\n size_t last = slot;\n backward += delta;\n if (backward > max_backward || (CAPPED_CHAINS && !delta)) break;\n prev_ix = (cur_ix - backward) & ring_buffer_mask;\n slot = banks[bank].slots[last].next;\n delta = banks[bank].slots[last].delta;\n if (cur_ix_masked + best_len > ring_buffer_mask ||\n prev_ix + best_len > ring_buffer_mask ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4) {\n /* Comparing for >= 3 does not change the semantics, but just saves\n for a few unnecessary binary logarithms in backward reference\n score, since we are not interested in such short matches. */\n score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n FN(Store)(self, data, ring_buffer_mask, cur_ix);\n }\n if (out->score == min_score) {\n SearchInStaticDictionary(dictionary,\n self->common, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_FALSE);\n }\n}\n\n#undef BANK_SIZE\n#undef BUCKET_SIZE\n#undef CAPPED_CHAINS\n\n#undef HashForgetfulChain\n" }, { "path": "c/enc/hash_longest_match64_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n\n This is a hash map of fixed size (bucket_size_) to a ring buffer of\n fixed size (block_size_). The ring buffer contains the last block_size_\n index positions of the given hash key in the compressed data. */\n\n#define HashLongestMatch HASHER()\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 8; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 8; }\n\n/* HashBytes is the function that chooses the bucket to place the address in. */\nstatic BROTLI_INLINE size_t FN(HashBytes)(const uint8_t* BROTLI_RESTRICT data,\n uint64_t hash_mul) {\n const uint64_t h = BROTLI_UNALIGNED_LOAD64LE(data) * hash_mul;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return (size_t)(h >> (64 - 15));\n}\n\ntypedef struct HashLongestMatch {\n /* Number of hash buckets. */\n size_t bucket_size_;\n /* Only block_size_ newest backward references are kept,\n and the older are forgotten. */\n size_t block_size_;\n /* Hash multiplier tuned to match length. */\n uint64_t hash_mul_;\n /* Mask for accessing entries in a block (in a ring-buffer manner). */\n uint32_t block_mask_;\n\n int block_bits_;\n int num_last_distances_to_check_;\n\n /* Shortcuts. */\n HasherCommon* common_;\n\n /* --- Dynamic size members --- */\n\n /* Number of entries in a particular bucket. */\n uint16_t* num_; /* uint16_t[bucket_size]; */\n\n /* Buckets containing block_size_ of backward references. */\n uint32_t* buckets_; /* uint32_t[bucket_size * block_size]; */\n} HashLongestMatch;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common_ = common;\n\n BROTLI_UNUSED(params);\n self->hash_mul_ = kHashMul64 << (64 - 5 * 8);\n BROTLI_DCHECK(common->params.bucket_bits == 15);\n self->bucket_size_ = (size_t)1 << common->params.bucket_bits;\n self->block_bits_ = common->params.block_bits;\n self->block_size_ = (size_t)1 << common->params.block_bits;\n self->block_mask_ = (uint32_t)(self->block_size_ - 1);\n self->num_last_distances_to_check_ =\n common->params.num_last_distances_to_check;\n self->num_ = (uint16_t*)common->extra[0];\n self->buckets_ = (uint32_t*)common->extra[1];\n}\n\nstatic void FN(Prepare)(\n HashLongestMatch* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = self->bucket_size_ >> 6;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n const size_t key = FN(HashBytes)(&data[i], self->hash_mul_);\n num[key] = 0;\n }\n } else {\n memset(num, 0, self->bucket_size_ * sizeof(num[0]));\n }\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t bucket_size = (size_t)1 << params->hasher.bucket_bits;\n size_t block_size = (size_t)1 << params->hasher.block_bits;\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint16_t) * bucket_size;\n alloc_size[1] = sizeof(uint32_t) * bucket_size * block_size;\n}\n\n/* Look at 4 bytes at &data[ix & mask].\n Compute a hash from these, and store the value of ix at that position. */\nstatic BROTLI_INLINE void FN(Store)(\n HashLongestMatch* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t key = FN(HashBytes)(&data[ix & mask], self->hash_mul_);\n const size_t minor_ix = num[key] & self->block_mask_;\n const size_t offset = minor_ix + (key << self->block_bits_);\n ++num[key];\n buckets[offset] = (uint32_t)ix;\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(HashLongestMatch* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashLongestMatch* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 1);\n }\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashLongestMatch* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n PrepareDistanceCache(distance_cache, self->num_last_distances_to_check_);\n}\n\n/* Find a longest backward match of &data[cur_ix] up to the length of\n max_length and stores the position cur_ix in the hash table.\n\n REQUIRES: FN(PrepareDistanceCache) must be invoked for current distance cache\n values; if this method is invoked repeatedly with the same distance\n cache values, it is enough to invoke FN(PrepareDistanceCache) once.\n\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* Don't accept a short copy from far away. */\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n /* Precalculate the hash key and prefetch the bucket. */\n const size_t key = FN(HashBytes)(&data[cur_ix_masked], self->hash_mul_);\n uint32_t* BROTLI_RESTRICT bucket = &buckets[key << self->block_bits_];\n PREFETCH_L1(bucket);\n if (self->block_bits_ > 4) PREFETCH_L1(bucket + 16);\n out->len = 0;\n out->len_code_delta = 0;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n /* Try last distance first. */\n for (i = 0; i < (size_t)self->num_last_distances_to_check_; ++i) {\n const size_t backward = (size_t)distance_cache[i];\n size_t prev_ix = (size_t)(cur_ix - backward);\n if (prev_ix >= cur_ix) {\n continue;\n }\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n continue;\n }\n prev_ix &= ring_buffer_mask;\n\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n data[cur_ix_masked + best_len] != data[prev_ix + best_len]) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 3 || (len == 2 && i < 2)) {\n /* Comparing for >= 2 does not change the semantics, but just saves for\n a few unnecessary binary logarithms in backward reference score,\n since we are not interested in such short matches. */\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n {\n const size_t down =\n (num[key] > self->block_size_) ?\n (num[key] - self->block_size_) : 0u;\n const uint32_t first4 = BrotliUnalignedRead32(data + cur_ix_masked);\n const size_t max_length_m4 = max_length - 4;\n i = num[key];\n for (; i > down;) {\n size_t prev_ix = bucket[--i & self->block_mask_];\n uint32_t current4;\n const size_t backward = cur_ix - prev_ix;\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n break;\n }\n prev_ix &= ring_buffer_mask;\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) {\n continue;\n }\n current4 = BrotliUnalignedRead32(data + prev_ix);\n if (first4 != current4) continue;\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix + 4],\n &data[cur_ix_masked + 4],\n max_length_m4) + 4;\n const score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n bucket[num[key] & self->block_mask_] = (uint32_t)cur_ix;\n ++num[key];\n }\n if (min_score == out->score) {\n SearchInStaticDictionary(dictionary,\n self->common_, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_FALSE);\n }\n}\n\n#undef HashLongestMatch\n" }, { "path": "c/enc/hash_longest_match64_simd_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n\n This is a hash map of fixed size (bucket_size_) to a ring buffer of\n fixed size (block_size_). The ring buffer contains the last block_size_\n index positions of the given hash key in the compressed data. */\n\n#define HashLongestMatch HASHER()\n\n#define TAG_HASH_BITS 8\n#define TAG_HASH_MASK ((1 << TAG_HASH_BITS) - 1)\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 8; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 8; }\n\n/* HashBytes is the function that chooses the bucket to place the address in. */\nstatic BROTLI_INLINE size_t FN(HashBytes)(const uint8_t* BROTLI_RESTRICT data,\n uint64_t hash_mul) {\n const uint64_t h = BROTLI_UNALIGNED_LOAD64LE(data) * hash_mul;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return (size_t)(h >> (64 - 15 - TAG_HASH_BITS));\n}\n\ntypedef struct HashLongestMatch {\n /* Number of hash buckets. */\n size_t bucket_size_;\n /* Only block_size_ newest backward references are kept,\n and the older are forgotten. */\n size_t block_size_;\n /* Hash multiplier tuned to match length. */\n uint64_t hash_mul_;\n /* Mask for accessing entries in a block (in a ring-buffer manner). */\n uint32_t block_mask_;\n\n int block_bits_;\n int num_last_distances_to_check_;\n\n /* Shortcuts. */\n HasherCommon* common_;\n\n /* --- Dynamic size members --- */\n\n /* Number of entries in a particular bucket. */\n uint16_t* num_; /* uint16_t[bucket_size]; */\n\n uint8_t* tags_;\n\n /* Buckets containing block_size_ of backward references. */\n uint32_t* buckets_; /* uint32_t[bucket_size * block_size]; */\n} HashLongestMatch;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common_ = common;\n\n BROTLI_UNUSED(params);\n self->hash_mul_ = kHashMul64 << (64 - 5 * 8);\n BROTLI_DCHECK(common->params.bucket_bits == 15);\n self->bucket_size_ = (size_t)1 << common->params.bucket_bits;\n self->block_bits_ = common->params.block_bits;\n self->block_size_ = (size_t)1 << common->params.block_bits;\n self->block_mask_ = (uint32_t)(self->block_size_ - 1);\n self->num_last_distances_to_check_ =\n common->params.num_last_distances_to_check;\n self->num_ = (uint16_t*)common->extra[0];\n self->tags_ = (uint8_t*)common->extra[1];\n self->buckets_ = (uint32_t*)common->extra[2];\n}\n\nstatic void FN(Prepare)(\n HashLongestMatch* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = self->bucket_size_ >> 6;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n const size_t hash = FN(HashBytes)(&data[i], self->hash_mul_);\n const size_t key = hash >> TAG_HASH_BITS;\n num[key] = 65535;\n }\n } else {\n /* Set all the bytes of num to 255, which makes each uint16_t 65535. */\n memset(num, 255, self->bucket_size_ * sizeof(num[0]));\n }\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t bucket_size = (size_t)1 << params->hasher.bucket_bits;\n size_t block_size = (size_t)1 << params->hasher.block_bits;\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint16_t) * bucket_size;\n alloc_size[1] = sizeof(uint8_t) * bucket_size * block_size;\n alloc_size[2] = sizeof(uint32_t) * bucket_size * block_size;\n}\n\n/* Look at 4 bytes at &data[ix & mask].\n Compute a hash from these, and store the value of ix at that position. */\nstatic BROTLI_INLINE void FN(Store)(\n HashLongestMatch* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint8_t* BROTLI_RESTRICT tags = self->tags_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t hash = FN(HashBytes)(&data[ix & mask], self->hash_mul_);\n const size_t key = hash >> TAG_HASH_BITS;\n const uint8_t tag = hash & TAG_HASH_MASK;\n const size_t minor_ix = num[key] & self->block_mask_;\n const size_t offset = minor_ix + (key << self->block_bits_);\n --num[key];\n buckets[offset] = (uint32_t)ix;\n tags[offset] = tag;\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(HashLongestMatch* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashLongestMatch* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 1);\n }\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashLongestMatch* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n PrepareDistanceCache(distance_cache, self->num_last_distances_to_check_);\n}\n\n/* Find a longest backward match of &data[cur_ix] up to the length of\n max_length and stores the position cur_ix in the hash table.\n\n REQUIRES: FN(PrepareDistanceCache) must be invoked for current distance cache\n values; if this method is invoked repeatedly with the same distance\n cache values, it is enough to invoke FN(PrepareDistanceCache) once.\n\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n uint8_t* BROTLI_RESTRICT tags = self->tags_;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* Don't accept a short copy from far away. */\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n /* Precalculate the hash key and prefetch the bucket. */\n const size_t hash = FN(HashBytes)(&data[cur_ix_masked], self->hash_mul_);\n const size_t key = hash >> TAG_HASH_BITS;\n uint32_t* BROTLI_RESTRICT bucket = &buckets[key << self->block_bits_];\n uint8_t* BROTLI_RESTRICT tag_bucket = &tags[key << self->block_bits_];\n PREFETCH_L1(bucket);\n PREFETCH_L1(tag_bucket);\n if (self->block_bits_ > 4) PREFETCH_L1(bucket + 16);\n out->len = 0;\n out->len_code_delta = 0;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n /* Try last distance first. */\n for (i = 0; i < (size_t)self->num_last_distances_to_check_; ++i) {\n const size_t backward = (size_t)distance_cache[i];\n size_t prev_ix = (size_t)(cur_ix - backward);\n if (prev_ix >= cur_ix) {\n continue;\n }\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n continue;\n }\n prev_ix &= ring_buffer_mask;\n\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n data[cur_ix_masked + best_len] != data[prev_ix + best_len]) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 3 || (len == 2 && i < 2)) {\n /* Comparing for >= 2 does not change the semantics, but just saves for\n a few unnecessary binary logarithms in backward reference score,\n since we are not interested in such short matches. */\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n {\n const uint8_t tag = hash & TAG_HASH_MASK;\n const uint32_t first4 = BrotliUnalignedRead32(data + cur_ix_masked);\n const size_t max_length_m4 = max_length - 4;\n const size_t head = (num[key] + 1) & self->block_mask_;\n uint64_t matches =\n GetMatchingTagMask(self->block_size_ / 16, tag, tag_bucket, head);\n /* Mask off any matches from uninitialized tags. */\n uint16_t n = 65535 - num[key];\n uint64_t block_has_unused_slots = self->block_size_ > n;\n uint64_t mask = (block_has_unused_slots << (n & (64 - 1))) - 1;\n matches &= mask;\n for (; matches > 0; matches &= (matches - 1)) {\n const size_t rb_index =\n (head + (size_t)BROTLI_TZCNT64(matches)) & self->block_mask_;\n size_t prev_ix = bucket[rb_index];\n uint32_t current4;\n const size_t backward = cur_ix - prev_ix;\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n break;\n }\n prev_ix &= ring_buffer_mask;\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) {\n continue;\n }\n current4 = BrotliUnalignedRead32(data + prev_ix);\n if (first4 != current4) continue;\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix + 4],\n &data[cur_ix_masked + 4],\n max_length_m4) + 4;\n const score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n bucket[num[key] & self->block_mask_] = (uint32_t)cur_ix;\n tag_bucket[num[key] & self->block_mask_] = tag;\n --num[key];\n }\n if (min_score == out->score) {\n SearchInStaticDictionary(dictionary,\n self->common_, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_FALSE);\n }\n}\n\n#undef HashLongestMatch\n" }, { "path": "c/enc/hash_longest_match_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n\n This is a hash map of fixed size (bucket_size_) to a ring buffer of\n fixed size (block_size_). The ring buffer contains the last block_size_\n index positions of the given hash key in the compressed data. */\n\n#define HashLongestMatch HASHER()\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 4; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 4; }\n\n/* HashBytes is the function that chooses the bucket to place the address in. */\nstatic uint32_t FN(HashBytes)(\n const uint8_t* BROTLI_RESTRICT data, const int shift) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return (uint32_t)(h >> shift);\n}\n\ntypedef struct HashLongestMatch {\n /* Number of hash buckets. */\n size_t bucket_size_;\n /* Only block_size_ newest backward references are kept,\n and the older are forgotten. */\n size_t block_size_;\n /* Left-shift for computing hash bucket index from hash value. */\n int hash_shift_;\n /* Mask for accessing entries in a block (in a ring-buffer manner). */\n uint32_t block_mask_;\n\n int block_bits_;\n int num_last_distances_to_check_;\n\n /* Shortcuts. */\n HasherCommon* common_;\n\n /* --- Dynamic size members --- */\n\n /* Number of entries in a particular bucket. */\n uint16_t* num_; /* uint16_t[bucket_size]; */\n\n /* Buckets containing block_size_ of backward references. */\n uint32_t* buckets_; /* uint32_t[bucket_size * block_size]; */\n} HashLongestMatch;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common_ = common;\n\n BROTLI_UNUSED(params);\n self->hash_shift_ = 32 - common->params.bucket_bits;\n self->bucket_size_ = (size_t)1 << common->params.bucket_bits;\n self->block_size_ = (size_t)1 << common->params.block_bits;\n self->block_mask_ = (uint32_t)(self->block_size_ - 1);\n self->num_ = (uint16_t*)common->extra[0];\n self->buckets_ = (uint32_t*)common->extra[1];\n self->block_bits_ = common->params.block_bits;\n self->num_last_distances_to_check_ =\n common->params.num_last_distances_to_check;\n}\n\nstatic void FN(Prepare)(\n HashLongestMatch* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = self->bucket_size_ >> 6;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n const uint32_t key = FN(HashBytes)(&data[i], self->hash_shift_);\n num[key] = 0;\n }\n } else {\n memset(num, 0, self->bucket_size_ * sizeof(num[0]));\n }\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t bucket_size = (size_t)1 << params->hasher.bucket_bits;\n size_t block_size = (size_t)1 << params->hasher.block_bits;\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint16_t) * bucket_size;\n alloc_size[1] = sizeof(uint32_t) * bucket_size * block_size;\n}\n\n/* Look at 4 bytes at &data[ix & mask].\n Compute a hash from these, and store the value of ix at that position. */\nstatic BROTLI_INLINE void FN(Store)(\n HashLongestMatch* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const uint32_t key = FN(HashBytes)(&data[ix & mask], self->hash_shift_);\n const size_t minor_ix = num[key] & self->block_mask_;\n const size_t offset = minor_ix + (key << self->block_bits_);\n ++num[key];\n buckets[offset] = (uint32_t)ix;\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(HashLongestMatch* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashLongestMatch* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 1);\n }\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashLongestMatch* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n PrepareDistanceCache(distance_cache, self->num_last_distances_to_check_);\n}\n\n/* Find a longest backward match of &data[cur_ix] up to the length of\n max_length and stores the position cur_ix in the hash table.\n\n REQUIRES: FN(PrepareDistanceCache) must be invoked for current distance cache\n values; if this method is invoked repeatedly with the same distance\n cache values, it is enough to invoke FN(PrepareDistanceCache) once.\n\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* Don't accept a short copy from far away. */\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n /* Precalculate the hash key and prefetch the bucket. */\n const uint32_t key =\n FN(HashBytes)(&data[cur_ix_masked], self->hash_shift_);\n uint32_t* BROTLI_RESTRICT bucket = &buckets[key << self->block_bits_];\n PREFETCH_L1(bucket);\n if (self->block_bits_ > 4) PREFETCH_L1(bucket + 16);\n out->len = 0;\n out->len_code_delta = 0;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n /* Try last distance first. */\n for (i = 0; i < (size_t)self->num_last_distances_to_check_; ++i) {\n const size_t backward = (size_t)distance_cache[i];\n size_t prev_ix = (size_t)(cur_ix - backward);\n if (prev_ix >= cur_ix) {\n continue;\n }\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n continue;\n }\n prev_ix &= ring_buffer_mask;\n\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n data[cur_ix_masked + best_len] != data[prev_ix + best_len]) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 3 || (len == 2 && i < 2)) {\n /* Comparing for >= 2 does not change the semantics, but just saves for\n a few unnecessary binary logarithms in backward reference score,\n since we are not interested in such short matches. */\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n {\n const size_t down =\n (num[key] > self->block_size_) ? (num[key] - self->block_size_) : 0u;\n for (i = num[key]; i > down;) {\n size_t prev_ix = bucket[--i & self->block_mask_];\n const size_t backward = cur_ix - prev_ix;\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n break;\n }\n prev_ix &= ring_buffer_mask;\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4) {\n /* Comparing for >= 3 does not change the semantics, but just saves\n for a few unnecessary binary logarithms in backward reference\n score, since we are not interested in such short matches. */\n score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n bucket[num[key] & self->block_mask_] = (uint32_t)cur_ix;\n ++num[key];\n }\n if (min_score == out->score) {\n SearchInStaticDictionary(dictionary,\n self->common_, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_FALSE);\n }\n}\n\n#undef HashLongestMatch\n" }, { "path": "c/enc/hash_longest_match_quickly_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, BUCKET_BITS, BUCKET_SWEEP_BITS, HASH_LEN,\n USE_DICTIONARY\n */\n\n#define HashLongestMatchQuickly HASHER()\n\n#define BUCKET_SIZE (1 << BUCKET_BITS)\n#define BUCKET_MASK (BUCKET_SIZE - 1)\n#define BUCKET_SWEEP (1 << BUCKET_SWEEP_BITS)\n#define BUCKET_SWEEP_MASK ((BUCKET_SWEEP - 1) << 3)\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 8; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 8; }\n\n/* HashBytes is the function that chooses the bucket to place\n the address in. The HashLongestMatch and HashLongestMatchQuickly\n classes have separate, different implementations of hashing. */\nstatic uint32_t FN(HashBytes)(const uint8_t* data) {\n const uint64_t h = ((BROTLI_UNALIGNED_LOAD64LE(data) << (64 - 8 * HASH_LEN)) *\n kHashMul64);\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return (uint32_t)(h >> (64 - BUCKET_BITS));\n}\n\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n\n This is a hash map of fixed size (BUCKET_SIZE). */\ntypedef struct HashLongestMatchQuickly {\n /* Shortcuts. */\n HasherCommon* common;\n\n /* --- Dynamic size members --- */\n\n uint32_t* buckets_; /* uint32_t[BUCKET_SIZE]; */\n} HashLongestMatchQuickly;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashLongestMatchQuickly* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common = common;\n\n BROTLI_UNUSED(params);\n self->buckets_ = (uint32_t*)common->extra[0];\n}\n\nstatic void FN(Prepare)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = BUCKET_SIZE >> 5;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n const uint32_t key = FN(HashBytes)(&data[i]);\n if (BUCKET_SWEEP == 1) {\n buckets[key] = 0;\n } else {\n uint32_t j;\n for (j = 0; j < BUCKET_SWEEP; ++j) {\n buckets[(key + (j << 3)) & BUCKET_MASK] = 0;\n }\n }\n }\n } else {\n /* It is not strictly necessary to fill this buffer here, but\n not filling will make the results of the compression stochastic\n (but correct). This is because random data would cause the\n system to find accidentally good backward references here and there. */\n memset(buckets, 0, sizeof(uint32_t) * BUCKET_SIZE);\n }\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n BROTLI_UNUSED(params);\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint32_t) * BUCKET_SIZE;\n}\n\n/* Look at 5 bytes at &data[ix & mask].\n Compute a hash from these, and store the value somewhere within\n [ix .. ix+3]. */\nstatic BROTLI_INLINE void FN(Store)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask, const size_t ix) {\n const uint32_t key = FN(HashBytes)(&data[ix & mask]);\n if (BUCKET_SWEEP == 1) {\n self->buckets_[key] = (uint32_t)ix;\n } else {\n /* Wiggle the value with the bucket sweep range. */\n const uint32_t off = ix & BUCKET_SWEEP_MASK;\n self->buckets_[(key + off) & BUCKET_MASK] = (uint32_t)ix;\n }\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position,\n const uint8_t* ringbuffer, size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 1);\n }\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n BROTLI_UNUSED(self);\n BROTLI_UNUSED(distance_cache);\n}\n\n/* Find a longest backward match of &data[cur_ix & ring_buffer_mask]\n up to the length of max_length and stores the position cur_ix in the\n hash table.\n\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashLongestMatchQuickly* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const int* BROTLI_RESTRICT distance_cache,\n const size_t cur_ix, const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t best_len_in = out->len;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* TODO: compare 4 bytes at once (and set the minimum best len to 4) */\n int compare_char = data[cur_ix_masked + best_len_in];\n size_t key = FN(HashBytes)(&data[cur_ix_masked]);\n size_t key_out;\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = best_len_in;\n size_t cached_backward = (size_t)distance_cache[0];\n size_t prev_ix = cur_ix - cached_backward;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n out->len_code_delta = 0;\n if (prev_ix < cur_ix && cached_backward <= max_backward) {\n prev_ix &= (uint32_t)ring_buffer_mask;\n if (compare_char == data[prev_ix + best_len]) {\n const size_t len = FindMatchLengthWithLimit(\n &data[prev_ix], &data[cur_ix_masked], max_length);\n if (len >= 4) {\n const score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n out->len = len;\n out->distance = cached_backward;\n out->score = score;\n if (BUCKET_SWEEP == 1) {\n buckets[key] = (uint32_t)cur_ix;\n return;\n } else {\n best_len = len;\n best_score = score;\n compare_char = data[cur_ix_masked + len];\n }\n }\n }\n }\n }\n if (BUCKET_SWEEP == 1) {\n size_t backward;\n size_t len;\n /* Only one to look for, don't bother to prepare for a loop. */\n prev_ix = buckets[key];\n buckets[key] = (uint32_t)cur_ix;\n backward = cur_ix - prev_ix;\n prev_ix &= (uint32_t)ring_buffer_mask;\n if (compare_char != data[prev_ix + best_len_in]) {\n return;\n }\n if (BROTLI_PREDICT_FALSE(backward == 0 || backward > max_backward)) {\n return;\n }\n len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4) {\n const score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n out->len = len;\n out->distance = backward;\n out->score = score;\n return;\n }\n }\n } else {\n size_t keys[BUCKET_SWEEP];\n size_t i;\n for (i = 0; i < BUCKET_SWEEP; ++i) {\n keys[i] = (key + (i << 3)) & BUCKET_MASK;\n }\n key_out = keys[(cur_ix & BUCKET_SWEEP_MASK) >> 3];\n for (i = 0; i < BUCKET_SWEEP; ++i) {\n size_t len;\n size_t backward;\n prev_ix = buckets[keys[i]];\n backward = cur_ix - prev_ix;\n prev_ix &= (uint32_t)ring_buffer_mask;\n if (compare_char != data[prev_ix + best_len]) {\n continue;\n }\n if (BROTLI_PREDICT_FALSE(backward == 0 || backward > max_backward)) {\n continue;\n }\n len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4) {\n const score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_len = len;\n out->len = len;\n compare_char = data[cur_ix_masked + len];\n best_score = score;\n out->score = score;\n out->distance = backward;\n }\n }\n }\n }\n if (USE_DICTIONARY && min_score == out->score) {\n SearchInStaticDictionary(dictionary,\n self->common, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_TRUE);\n }\n if (BUCKET_SWEEP != 1) {\n buckets[key_out] = (uint32_t)cur_ix;\n }\n}\n\n#undef BUCKET_SWEEP_MASK\n#undef BUCKET_SWEEP\n#undef BUCKET_MASK\n#undef BUCKET_SIZE\n\n#undef HashLongestMatchQuickly\n" }, { "path": "c/enc/hash_longest_match_simd_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2010 Google Inc. All Rights Reserved.\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n/* template parameters: FN */\n/* A (forgetful) hash table to the data seen by the compressor, to\n help create backward references to previous data.\n This is a hash map of fixed size (bucket_size_) to a ring buffer of\n fixed size (block_size_). The ring buffer contains the last block_size_\n index positions of the given hash key in the compressed data. */\n#define HashLongestMatch HASHER()\n#define TAG_HASH_BITS 8\n#define TAG_HASH_MASK ((1 << TAG_HASH_BITS) - 1)\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 4; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 4; }\n/* HashBytes is the function that chooses the bucket to place the address in. */\nstatic uint32_t FN(HashBytes)(\n const uint8_t* BROTLI_RESTRICT data, const int shift) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return (uint32_t)(h >> shift);\n}\ntypedef struct HashLongestMatch {\n /* Number of hash buckets. */\n size_t bucket_size_;\n /* Only block_size_ newest backward references are kept,\n and the older are forgotten. */\n size_t block_size_;\n /* Left-shift for computing hash bucket index from hash value. */\n int hash_shift_;\n /* Mask for accessing entries in a block (in a ring-buffer manner). */\n uint32_t block_mask_;\n int block_bits_;\n int num_last_distances_to_check_;\n /* Shortcuts. */\n HasherCommon* common_;\n /* --- Dynamic size members --- */\n /* Number of entries in a particular bucket. */\n uint16_t* num_; /* uint16_t[bucket_size]; */\n uint8_t* tags_;\n /* Buckets containing block_size_ of backward references. */\n uint32_t* buckets_; /* uint32_t[bucket_size * block_size]; */\n} HashLongestMatch;\nstatic void FN(Initialize)(\n HasherCommon* common, HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->common_ = common;\n BROTLI_UNUSED(params);\n self->hash_shift_ = 32 - common->params.bucket_bits - TAG_HASH_BITS;\n self->bucket_size_ = (size_t)1 << common->params.bucket_bits;\n self->block_size_ = (size_t)1 << common->params.block_bits;\n self->block_mask_ = (uint32_t)(self->block_size_ - 1);\n self->num_ = (uint16_t*)common->extra[0];\n self->tags_ = (uint8_t*)common->extra[1];\n self->buckets_ = (uint32_t*)common->extra[2];\n self->block_bits_ = common->params.block_bits;\n self->num_last_distances_to_check_ =\n common->params.num_last_distances_to_check;\n}\nstatic void FN(Prepare)(\n HashLongestMatch* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n /* Partial preparation is 100 times slower (per socket). */\n size_t partial_prepare_threshold = self->bucket_size_ >> 6;\n if (one_shot && input_size <= partial_prepare_threshold) {\n size_t i;\n for (i = 0; i < input_size; ++i) {\n const uint32_t hash = FN(HashBytes)(&data[i], self->hash_shift_);\n const uint32_t key = hash >> TAG_HASH_BITS;\n num[key] = 65535;\n }\n } else {\n /* Set all the bytes of num to 255, which makes each uint16_t 65535. */\n memset(num, 255, self->bucket_size_ * sizeof(num[0]));\n }\n}\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t bucket_size = (size_t)1 << params->hasher.bucket_bits;\n size_t block_size = (size_t)1 << params->hasher.block_bits;\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = sizeof(uint16_t) * bucket_size;\n alloc_size[1] = sizeof(uint8_t) * bucket_size * block_size;\n alloc_size[2] = sizeof(uint32_t) * bucket_size * block_size;\n}\n/* Look at 4 bytes at &data[ix & mask].\n Compute a hash from these, and store the value of ix at that position. */\nstatic BROTLI_INLINE void FN(Store)(\n HashLongestMatch* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint8_t* BROTLI_RESTRICT tags = self->tags_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n const size_t hash = FN(HashBytes)(&data[ix & mask], self->hash_shift_);\n const size_t key = hash >> TAG_HASH_BITS;\n const uint8_t tag = hash & TAG_HASH_MASK;\n const size_t minor_ix = num[key] & self->block_mask_;\n const size_t offset = minor_ix + (key << self->block_bits_);\n --num[key];\n buckets[offset] = (uint32_t)ix;\n tags[offset] = tag;\n}\nstatic BROTLI_INLINE void FN(StoreRange)(HashLongestMatch* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i;\n for (i = ix_start; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashLongestMatch* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 && position >= 3) {\n /* Prepare the hashes for three last bytes of the last write.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 3);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 2);\n FN(Store)(self, ringbuffer, ringbuffer_mask, position - 1);\n }\n}\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashLongestMatch* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n PrepareDistanceCache(distance_cache, self->num_last_distances_to_check_);\n}\n\n/* Find a longest backward match of &data[cur_ix] up to the length of\n max_length and stores the position cur_ix in the hash table.\n REQUIRES: FN(PrepareDistanceCache) must be invoked for current distance cache\n values; if this method is invoked repeatedly with the same distance\n cache values, it is enough to invoke FN(PrepareDistanceCache) once.\n Does not look for matches longer than max_length.\n Does not look for matches further away than max_backward.\n Writes the best match into |out|.\n |out|->score is updated only if a better match is found. */\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashLongestMatch* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n uint16_t* BROTLI_RESTRICT num = self->num_;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n uint8_t* BROTLI_RESTRICT tags = self->tags_;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n /* Don't accept a short copy from far away. */\n score_t min_score = out->score;\n score_t best_score = out->score;\n size_t best_len = out->len;\n size_t i;\n /* Precalculate the hash key and prefetch the bucket. */\n const uint32_t hash =\n FN(HashBytes)(&data[cur_ix_masked], self->hash_shift_);\n const uint32_t key = hash >> TAG_HASH_BITS;\n uint32_t* BROTLI_RESTRICT bucket = &buckets[key << self->block_bits_];\n uint8_t* BROTLI_RESTRICT tag_bucket = &tags[key << self->block_bits_];\n PREFETCH_L1(bucket);\n PREFETCH_L1(tag_bucket);\n if (self->block_bits_ > 4) PREFETCH_L1(bucket + 16);\n out->len = 0;\n out->len_code_delta = 0;\n\n BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask + 1);\n\n /* Try last distance first. */\n for (i = 0; i < (size_t)self->num_last_distances_to_check_; ++i) {\n const size_t backward = (size_t)distance_cache[i];\n size_t prev_ix = (size_t)(cur_ix - backward);\n if (prev_ix >= cur_ix) {\n continue;\n }\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n continue;\n }\n prev_ix &= ring_buffer_mask;\n\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n data[cur_ix_masked + best_len] != data[prev_ix + best_len]) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 3 || (len == 2 && i < 2)) {\n /* Comparing for >= 2 does not change the semantics, but just saves for\n a few unnecessary binary logarithms in backward reference score,\n since we are not interested in such short matches. */\n score_t score = BackwardReferenceScoreUsingLastDistance(len);\n if (best_score < score) {\n if (i != 0) score -= BackwardReferencePenaltyUsingLastDistance(i);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n }\n /* we require matches of len >4, so increase best_len to 3, so we can compare\n * 4 bytes all the time. */\n if (best_len < 3) {\n best_len = 3;\n }\n {\n const uint8_t tag = hash & TAG_HASH_MASK;\n const size_t head = (num[key] + 1) & self->block_mask_;\n uint64_t matches =\n GetMatchingTagMask(self->block_size_ / 16, tag, tag_bucket, head);\n /* Mask off any matches from uninitialized tags. */\n uint16_t n = 65535 - num[key];\n uint64_t block_has_unused_slots = self->block_size_ > n;\n uint64_t mask = (block_has_unused_slots << (n & (64 - 1))) - 1;\n matches &= mask;\n for (; matches > 0; matches &= (matches - 1)) {\n const size_t rb_index =\n (head + (size_t)BROTLI_TZCNT64(matches)) & self->block_mask_;\n size_t prev_ix = bucket[rb_index];\n const size_t backward = cur_ix - prev_ix;\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n break;\n }\n prev_ix &= ring_buffer_mask;\n if (cur_ix_masked + best_len > ring_buffer_mask) {\n break;\n }\n if (prev_ix + best_len > ring_buffer_mask ||\n /* compare 4 bytes ending at best_len + 1 */\n BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) !=\n BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) {\n continue;\n }\n {\n const size_t len = FindMatchLengthWithLimit(&data[prev_ix],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4) {\n /* Comparing for >= 3 does not change the semantics, but just saves\n for a few unnecessary binary logarithms in backward reference\n score, since we are not interested in such short matches. */\n score_t score = BackwardReferenceScore(len, backward);\n if (best_score < score) {\n best_score = score;\n best_len = len;\n out->len = best_len;\n out->distance = backward;\n out->score = best_score;\n }\n }\n }\n }\n bucket[num[key] & self->block_mask_] = (uint32_t)cur_ix;\n tag_bucket[num[key] & self->block_mask_] = tag;\n --num[key];\n }\n if (min_score == out->score) {\n SearchInStaticDictionary(dictionary,\n self->common_, &data[cur_ix_masked], max_length, dictionary_distance,\n max_distance, out, BROTLI_FALSE);\n }\n}\n#undef HashLongestMatch\n" }, { "path": "c/enc/hash_rolling_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2018 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, JUMP, NUMBUCKETS, MASK, CHUNKLEN */\n/* NUMBUCKETS / (MASK + 1) = probability of storing and using hash code. */\n/* JUMP = skip bytes for speedup */\n\n/* Rolling hash for long distance long string matches. Stores one position\n per bucket, bucket key is computed over a long region. */\n\n#define HashRolling HASHER()\n\nstatic const uint32_t FN(kRollingHashMul32) = 69069;\nstatic const uint32_t FN(kInvalidPos) = 0xffffffff;\n\n/* This hasher uses a longer forward length, but returning a higher value here\n will hurt compression by the main hasher when combined with a composite\n hasher. The hasher tests for forward itself instead. */\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 4; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) { return 4; }\n\n/* Computes a code from a single byte. A lookup table of 256 values could be\n used, but simply adding 1 works about as good. */\nstatic uint32_t FN(HashByte)(uint8_t byte) {\n return (uint32_t)byte + 1u;\n}\n\nstatic uint32_t FN(HashRollingFunctionInitial)(uint32_t state, uint8_t add,\n uint32_t factor) {\n return (uint32_t)(factor * state + FN(HashByte)(add));\n}\n\nstatic uint32_t FN(HashRollingFunction)(uint32_t state, uint8_t add,\n uint8_t rem, uint32_t factor,\n uint32_t factor_remove) {\n return (uint32_t)(factor * state +\n FN(HashByte)(add) - factor_remove * FN(HashByte)(rem));\n}\n\ntypedef struct HashRolling {\n uint32_t state;\n uint32_t* table;\n size_t next_ix;\n\n uint32_t chunk_len;\n uint32_t factor;\n uint32_t factor_remove;\n} HashRolling;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashRolling* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n size_t i;\n self->state = 0;\n self->next_ix = 0;\n\n self->factor = FN(kRollingHashMul32);\n\n /* Compute the factor of the oldest byte to remove: factor**steps modulo\n 0xffffffff (the multiplications rely on 32-bit overflow) */\n self->factor_remove = 1;\n for (i = 0; i < CHUNKLEN; i += JUMP) {\n self->factor_remove *= self->factor;\n }\n\n self->table = (uint32_t*)common->extra[0];\n for (i = 0; i < NUMBUCKETS; i++) {\n self->table[i] = FN(kInvalidPos);\n }\n\n BROTLI_UNUSED(params);\n}\n\nstatic void FN(Prepare)(HashRolling* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n size_t i;\n /* Too small size, cannot use this hasher. */\n if (input_size < CHUNKLEN) return;\n self->state = 0;\n for (i = 0; i < CHUNKLEN; i += JUMP) {\n self->state = FN(HashRollingFunctionInitial)(\n self->state, data[i], self->factor);\n }\n BROTLI_UNUSED(one_shot);\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n BROTLI_UNUSED(params);\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n alloc_size[0] = NUMBUCKETS * sizeof(uint32_t);\n}\n\nstatic BROTLI_INLINE void FN(Store)(HashRolling* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask, const size_t ix) {\n BROTLI_UNUSED(self);\n BROTLI_UNUSED(data);\n BROTLI_UNUSED(mask);\n BROTLI_UNUSED(ix);\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(HashRolling* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n BROTLI_UNUSED(self);\n BROTLI_UNUSED(data);\n BROTLI_UNUSED(mask);\n BROTLI_UNUSED(ix_start);\n BROTLI_UNUSED(ix_end);\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashRolling* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ring_buffer_mask) {\n /* In this case we must re-initialize the hasher from scratch from the\n current position. */\n size_t position_masked;\n size_t available = num_bytes;\n if ((position & (JUMP - 1)) != 0) {\n size_t diff = JUMP - (position & (JUMP - 1));\n available = (diff > available) ? 0 : (available - diff);\n position += diff;\n }\n position_masked = position & ring_buffer_mask;\n /* wrapping around ringbuffer not handled. */\n if (available > ring_buffer_mask - position_masked) {\n available = ring_buffer_mask - position_masked;\n }\n\n FN(Prepare)(self, BROTLI_FALSE, available,\n ringbuffer + (position & ring_buffer_mask));\n self->next_ix = position;\n BROTLI_UNUSED(num_bytes);\n}\n\nstatic BROTLI_INLINE void FN(PrepareDistanceCache)(\n HashRolling* BROTLI_RESTRICT self,\n int* BROTLI_RESTRICT distance_cache) {\n BROTLI_UNUSED(self);\n BROTLI_UNUSED(distance_cache);\n}\n\nstatic BROTLI_INLINE void FN(FindLongestMatch)(\n HashRolling* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data, const size_t ring_buffer_mask,\n const int* BROTLI_RESTRICT distance_cache, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const size_t max_distance,\n HasherSearchResult* BROTLI_RESTRICT out) {\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n size_t pos;\n\n if ((cur_ix & (JUMP - 1)) != 0) return;\n\n /* Not enough lookahead */\n if (max_length < CHUNKLEN) return;\n\n for (pos = self->next_ix; pos <= cur_ix; pos += JUMP) {\n uint32_t code = self->state & MASK;\n\n uint8_t rem = data[pos & ring_buffer_mask];\n uint8_t add = data[(pos + CHUNKLEN) & ring_buffer_mask];\n size_t found_ix = FN(kInvalidPos);\n\n self->state = FN(HashRollingFunction)(\n self->state, add, rem, self->factor, self->factor_remove);\n\n if (code < NUMBUCKETS) {\n found_ix = self->table[code];\n self->table[code] = (uint32_t)pos;\n if (pos == cur_ix && found_ix != FN(kInvalidPos)) {\n /* The cast to 32-bit makes backward distances up to 4GB work even\n if cur_ix is above 4GB, despite using 32-bit values in the table. */\n size_t backward = (uint32_t)(cur_ix - found_ix);\n if (backward <= max_backward) {\n const size_t found_ix_masked = found_ix & ring_buffer_mask;\n const size_t len = FindMatchLengthWithLimit(&data[found_ix_masked],\n &data[cur_ix_masked],\n max_length);\n if (len >= 4 && len > out->len) {\n score_t score = BackwardReferenceScore(len, backward);\n if (score > out->score) {\n out->len = len;\n out->distance = backward;\n out->score = score;\n out->len_code_delta = 0;\n }\n }\n }\n }\n }\n }\n\n self->next_ix = cur_ix + JUMP;\n\n /* NOTE: this hasher does not search in the dictionary. It is used as\n backup-hasher, the main hasher already searches in it. */\n BROTLI_UNUSED(dictionary);\n BROTLI_UNUSED(distance_cache);\n BROTLI_UNUSED(dictionary_distance);\n BROTLI_UNUSED(max_distance);\n}\n\n#undef HashRolling\n" }, { "path": "c/enc/hash_to_binary_tree_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN, BUCKET_BITS, MAX_TREE_COMP_LENGTH,\n MAX_TREE_SEARCH_DEPTH */\n\n/* A (forgetful) hash table where each hash bucket contains a binary tree of\n sequences whose first 4 bytes share the same hash code.\n Each sequence is MAX_TREE_COMP_LENGTH long and is identified by its starting\n position in the input data. The binary tree is sorted by the lexicographic\n order of the sequences, and it is also a max-heap with respect to the\n starting positions. */\n\n#define HashToBinaryTree HASHER()\n\n#define BUCKET_SIZE (1 << BUCKET_BITS)\n\nstatic BROTLI_INLINE size_t FN(HashTypeLength)(void) { return 4; }\nstatic BROTLI_INLINE size_t FN(StoreLookahead)(void) {\n return MAX_TREE_COMP_LENGTH;\n}\n\nstatic uint32_t FN(HashBytes)(const uint8_t* BROTLI_RESTRICT data) {\n uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kHashMul32;\n /* The higher bits contain more mixture from the multiplication,\n so we take our results from there. */\n return h >> (32 - BUCKET_BITS);\n}\n\ntypedef struct HashToBinaryTree {\n /* The window size minus 1 */\n size_t window_mask_;\n\n /* Hash table that maps the 4-byte hashes of the sequence to the last\n position where this hash was found, which is the root of the binary\n tree of sequences that share this hash bucket. */\n uint32_t* buckets_; /* uint32_t[BUCKET_SIZE]; */\n\n /* A position used to mark a non-existent sequence, i.e. a tree is empty if\n its root is at invalid_pos_ and a node is a leaf if both its children\n are at invalid_pos_. */\n uint32_t invalid_pos_;\n\n /* --- Dynamic size members --- */\n\n /* The union of the binary trees of each hash bucket. The root of the tree\n corresponding to a hash is a sequence starting at buckets_[hash] and\n the left and right children of a sequence starting at pos are\n forest_[2 * pos] and forest_[2 * pos + 1]. */\n uint32_t* forest_; /* uint32_t[2 * num_nodes] */\n} HashToBinaryTree;\n\nstatic void FN(Initialize)(\n HasherCommon* common, HashToBinaryTree* BROTLI_RESTRICT self,\n const BrotliEncoderParams* params) {\n self->buckets_ = (uint32_t*)common->extra[0];\n self->forest_ = (uint32_t*)common->extra[1];\n\n self->window_mask_ = (1u << params->lgwin) - 1u;\n self->invalid_pos_ = (uint32_t)(0 - self->window_mask_);\n}\n\nstatic void FN(Prepare)\n (HashToBinaryTree* BROTLI_RESTRICT self, BROTLI_BOOL one_shot,\n size_t input_size, const uint8_t* BROTLI_RESTRICT data) {\n uint32_t invalid_pos = self->invalid_pos_;\n uint32_t i;\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n BROTLI_UNUSED(data);\n BROTLI_UNUSED(one_shot);\n BROTLI_UNUSED(input_size);\n for (i = 0; i < BUCKET_SIZE; i++) {\n buckets[i] = invalid_pos;\n }\n}\n\nstatic BROTLI_INLINE void FN(HashMemAllocInBytes)(\n const BrotliEncoderParams* params, BROTLI_BOOL one_shot,\n size_t input_size, size_t* alloc_size) {\n size_t num_nodes = (size_t)1 << params->lgwin;\n if (one_shot && input_size < num_nodes) {\n num_nodes = input_size;\n }\n alloc_size[0] = sizeof(uint32_t) * BUCKET_SIZE;\n alloc_size[1] = 2 * sizeof(uint32_t) * num_nodes;\n}\n\nstatic BROTLI_INLINE size_t FN(LeftChildIndex)(\n HashToBinaryTree* BROTLI_RESTRICT self,\n const size_t pos) {\n return 2 * (pos & self->window_mask_);\n}\n\nstatic BROTLI_INLINE size_t FN(RightChildIndex)(\n HashToBinaryTree* BROTLI_RESTRICT self,\n const size_t pos) {\n return 2 * (pos & self->window_mask_) + 1;\n}\n\n/* Stores the hash of the next 4 bytes and in a single tree-traversal, the\n hash bucket's binary tree is searched for matches and is re-rooted at the\n current position.\n\n If less than MAX_TREE_COMP_LENGTH data is available, the hash bucket of the\n current position is searched for matches, but the state of the hash table\n is not changed, since we can not know the final sorting order of the\n current (incomplete) sequence.\n\n This function must be called with increasing cur_ix positions. */\nstatic BROTLI_INLINE BackwardMatch* FN(StoreAndFindMatches)(\n HashToBinaryTree* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,\n const size_t cur_ix, const size_t ring_buffer_mask, const size_t max_length,\n const size_t max_backward, size_t* const BROTLI_RESTRICT best_len,\n BackwardMatch* BROTLI_RESTRICT matches) {\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n const size_t max_comp_len =\n BROTLI_MIN(size_t, max_length, MAX_TREE_COMP_LENGTH);\n const BROTLI_BOOL should_reroot_tree =\n TO_BROTLI_BOOL(max_length >= MAX_TREE_COMP_LENGTH);\n const uint32_t key = FN(HashBytes)(&data[cur_ix_masked]);\n uint32_t* BROTLI_RESTRICT buckets = self->buckets_;\n uint32_t* BROTLI_RESTRICT forest = self->forest_;\n size_t prev_ix = buckets[key];\n /* The forest index of the rightmost node of the left subtree of the new\n root, updated as we traverse and re-root the tree of the hash bucket. */\n size_t node_left = FN(LeftChildIndex)(self, cur_ix);\n /* The forest index of the leftmost node of the right subtree of the new\n root, updated as we traverse and re-root the tree of the hash bucket. */\n size_t node_right = FN(RightChildIndex)(self, cur_ix);\n /* The match length of the rightmost node of the left subtree of the new\n root, updated as we traverse and re-root the tree of the hash bucket. */\n size_t best_len_left = 0;\n /* The match length of the leftmost node of the right subtree of the new\n root, updated as we traverse and re-root the tree of the hash bucket. */\n size_t best_len_right = 0;\n size_t depth_remaining;\n if (should_reroot_tree) {\n buckets[key] = (uint32_t)cur_ix;\n }\n for (depth_remaining = MAX_TREE_SEARCH_DEPTH; ; --depth_remaining) {\n const size_t backward = cur_ix - prev_ix;\n const size_t prev_ix_masked = prev_ix & ring_buffer_mask;\n if (backward == 0 || backward > max_backward || depth_remaining == 0) {\n if (should_reroot_tree) {\n forest[node_left] = self->invalid_pos_;\n forest[node_right] = self->invalid_pos_;\n }\n break;\n }\n {\n const size_t cur_len = BROTLI_MIN(size_t, best_len_left, best_len_right);\n size_t len;\n BROTLI_DCHECK(cur_len <= MAX_TREE_COMP_LENGTH);\n len = cur_len +\n FindMatchLengthWithLimit(&data[cur_ix_masked + cur_len],\n &data[prev_ix_masked + cur_len],\n max_length - cur_len);\n BROTLI_DCHECK(\n 0 == memcmp(&data[cur_ix_masked], &data[prev_ix_masked], len));\n if (matches && len > *best_len) {\n *best_len = len;\n InitBackwardMatch(matches++, backward, len);\n }\n if (len >= max_comp_len) {\n if (should_reroot_tree) {\n forest[node_left] = forest[FN(LeftChildIndex)(self, prev_ix)];\n forest[node_right] = forest[FN(RightChildIndex)(self, prev_ix)];\n }\n break;\n }\n if (data[cur_ix_masked + len] > data[prev_ix_masked + len]) {\n best_len_left = len;\n if (should_reroot_tree) {\n forest[node_left] = (uint32_t)prev_ix;\n }\n node_left = FN(RightChildIndex)(self, prev_ix);\n prev_ix = forest[node_left];\n } else {\n best_len_right = len;\n if (should_reroot_tree) {\n forest[node_right] = (uint32_t)prev_ix;\n }\n node_right = FN(LeftChildIndex)(self, prev_ix);\n prev_ix = forest[node_right];\n }\n }\n }\n return matches;\n}\n\n/* Finds all backward matches of &data[cur_ix & ring_buffer_mask] up to the\n length of max_length and stores the position cur_ix in the hash table.\n\n Sets *num_matches to the number of matches found, and stores the found\n matches in matches[0] to matches[*num_matches - 1]. The matches will be\n sorted by strictly increasing length and (non-strictly) increasing\n distance. */\nstatic BROTLI_INLINE size_t FN(FindAllMatches)(\n HashToBinaryTree* BROTLI_RESTRICT self,\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* BROTLI_RESTRICT data,\n const size_t ring_buffer_mask, const size_t cur_ix,\n const size_t max_length, const size_t max_backward,\n const size_t dictionary_distance, const BrotliEncoderParams* params,\n BackwardMatch* matches) {\n BackwardMatch* const orig_matches = matches;\n const size_t cur_ix_masked = cur_ix & ring_buffer_mask;\n size_t best_len = 1;\n const size_t short_match_max_backward =\n params->quality != HQ_ZOPFLIFICATION_QUALITY ? 16 : 64;\n size_t stop = cur_ix - short_match_max_backward;\n uint32_t dict_matches[BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1];\n size_t i;\n if (cur_ix < short_match_max_backward) { stop = 0; }\n for (i = cur_ix - 1; i > stop && best_len <= 2; --i) {\n size_t prev_ix = i;\n const size_t backward = cur_ix - prev_ix;\n if (BROTLI_PREDICT_FALSE(backward > max_backward)) {\n break;\n }\n prev_ix &= ring_buffer_mask;\n if (data[cur_ix_masked] != data[prev_ix] ||\n data[cur_ix_masked + 1] != data[prev_ix + 1]) {\n continue;\n }\n {\n const size_t len =\n FindMatchLengthWithLimit(&data[prev_ix], &data[cur_ix_masked],\n max_length);\n if (len > best_len) {\n best_len = len;\n InitBackwardMatch(matches++, backward, len);\n }\n }\n }\n if (best_len < max_length) {\n matches = FN(StoreAndFindMatches)(self, data, cur_ix,\n ring_buffer_mask, max_length, max_backward, &best_len, matches);\n }\n for (i = 0; i <= BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN; ++i) {\n dict_matches[i] = kInvalidMatch;\n }\n {\n size_t minlen = BROTLI_MAX(size_t, 4, best_len + 1);\n if (BrotliFindAllStaticDictionaryMatches(dictionary,\n &data[cur_ix_masked], minlen, max_length, &dict_matches[0])) {\n size_t maxlen = BROTLI_MIN(\n size_t, BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN, max_length);\n size_t l;\n for (l = minlen; l <= maxlen; ++l) {\n uint32_t dict_id = dict_matches[l];\n if (dict_id < kInvalidMatch) {\n size_t distance = dictionary_distance + (dict_id >> 5) + 1;\n if (distance <= params->dist.max_distance) {\n InitDictionaryBackwardMatch(matches++, distance, l, dict_id & 31);\n }\n }\n }\n }\n }\n return (size_t)(matches - orig_matches);\n}\n\n/* Stores the hash of the next 4 bytes and re-roots the binary tree at the\n current sequence, without returning any matches.\n REQUIRES: ix + MAX_TREE_COMP_LENGTH <= end-of-current-block */\nstatic BROTLI_INLINE void FN(Store)(HashToBinaryTree* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data,\n const size_t mask, const size_t ix) {\n /* Maximum distance is window size - 16, see section 9.1. of the spec. */\n const size_t max_backward = self->window_mask_ - BROTLI_WINDOW_GAP + 1;\n FN(StoreAndFindMatches)(self, data, ix, mask, MAX_TREE_COMP_LENGTH,\n max_backward, NULL, NULL);\n}\n\nstatic BROTLI_INLINE void FN(StoreRange)(HashToBinaryTree* BROTLI_RESTRICT self,\n const uint8_t* BROTLI_RESTRICT data, const size_t mask,\n const size_t ix_start, const size_t ix_end) {\n size_t i = ix_start;\n size_t j = ix_start;\n if (ix_start + 63 <= ix_end) {\n i = ix_end - 63;\n }\n if (ix_start + 512 <= i) {\n for (; j < i; j += 8) {\n FN(Store)(self, data, mask, j);\n }\n }\n for (; i < ix_end; ++i) {\n FN(Store)(self, data, mask, i);\n }\n}\n\nstatic BROTLI_INLINE void FN(StitchToPreviousBlock)(\n HashToBinaryTree* BROTLI_RESTRICT self,\n size_t num_bytes, size_t position, const uint8_t* ringbuffer,\n size_t ringbuffer_mask) {\n if (num_bytes >= FN(HashTypeLength)() - 1 &&\n position >= MAX_TREE_COMP_LENGTH) {\n /* Store the last `MAX_TREE_COMP_LENGTH - 1` positions in the hasher.\n These could not be calculated before, since they require knowledge\n of both the previous and the current block. */\n const size_t i_start = position - MAX_TREE_COMP_LENGTH + 1;\n const size_t i_end = BROTLI_MIN(size_t, position, i_start + num_bytes);\n size_t i;\n for (i = i_start; i < i_end; ++i) {\n /* Maximum distance is window size - 16, see section 9.1. of the spec.\n Furthermore, we have to make sure that we don't look further back\n from the start of the next block than the window size, otherwise we\n could access already overwritten areas of the ring-buffer. */\n const size_t max_backward =\n self->window_mask_ - BROTLI_MAX(size_t,\n BROTLI_WINDOW_GAP - 1,\n position - i);\n /* We know that i + MAX_TREE_COMP_LENGTH <= position + num_bytes, i.e. the\n end of the current block and that we have at least\n MAX_TREE_COMP_LENGTH tail in the ring-buffer. */\n FN(StoreAndFindMatches)(self, ringbuffer, i, ringbuffer_mask,\n MAX_TREE_COMP_LENGTH, max_backward, NULL, NULL);\n }\n }\n}\n\n#undef BUCKET_SIZE\n\n#undef HashToBinaryTree\n" }, { "path": "c/enc/histogram.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Build per-context histograms of literals, commands and distance codes. */\n\n#include \"histogram.h\"\n\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"block_splitter.h\"\n#include \"command.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct BlockSplitIterator {\n const BlockSplit* split_; /* Not owned. */\n size_t idx_;\n size_t type_;\n size_t length_;\n} BlockSplitIterator;\n\nstatic void InitBlockSplitIterator(BlockSplitIterator* self,\n const BlockSplit* split) {\n self->split_ = split;\n self->idx_ = 0;\n self->type_ = 0;\n self->length_ = split->lengths ? split->lengths[0] : 0;\n}\n\nstatic void BlockSplitIteratorNext(BlockSplitIterator* self) {\n if (self->length_ == 0) {\n ++self->idx_;\n self->type_ = self->split_->types[self->idx_];\n self->length_ = self->split_->lengths[self->idx_];\n }\n --self->length_;\n}\n\nvoid BrotliBuildHistogramsWithContext(\n const Command* cmds, const size_t num_commands,\n const BlockSplit* literal_split, const BlockSplit* insert_and_copy_split,\n const BlockSplit* dist_split, const uint8_t* ringbuffer, size_t start_pos,\n size_t mask, uint8_t prev_byte, uint8_t prev_byte2,\n const ContextType* context_modes, HistogramLiteral* literal_histograms,\n HistogramCommand* insert_and_copy_histograms,\n HistogramDistance* copy_dist_histograms) {\n size_t pos = start_pos;\n BlockSplitIterator literal_it;\n BlockSplitIterator insert_and_copy_it;\n BlockSplitIterator dist_it;\n size_t i;\n\n InitBlockSplitIterator(&literal_it, literal_split);\n InitBlockSplitIterator(&insert_and_copy_it, insert_and_copy_split);\n InitBlockSplitIterator(&dist_it, dist_split);\n for (i = 0; i < num_commands; ++i) {\n const Command* cmd = &cmds[i];\n size_t j;\n BlockSplitIteratorNext(&insert_and_copy_it);\n HistogramAddCommand(&insert_and_copy_histograms[insert_and_copy_it.type_],\n cmd->cmd_prefix_);\n /* TODO(eustas): unwrap iterator blocks. */\n for (j = cmd->insert_len_; j != 0; --j) {\n size_t context;\n BlockSplitIteratorNext(&literal_it);\n context = literal_it.type_;\n if (context_modes) {\n ContextLut lut = BROTLI_CONTEXT_LUT(context_modes[context]);\n context = (context << BROTLI_LITERAL_CONTEXT_BITS) +\n BROTLI_CONTEXT(prev_byte, prev_byte2, lut);\n }\n HistogramAddLiteral(&literal_histograms[context],\n ringbuffer[pos & mask]);\n prev_byte2 = prev_byte;\n prev_byte = ringbuffer[pos & mask];\n ++pos;\n }\n pos += CommandCopyLen(cmd);\n if (CommandCopyLen(cmd)) {\n prev_byte2 = ringbuffer[(pos - 2) & mask];\n prev_byte = ringbuffer[(pos - 1) & mask];\n if (cmd->cmd_prefix_ >= 128) {\n size_t context;\n BlockSplitIteratorNext(&dist_it);\n context = (dist_it.type_ << BROTLI_DISTANCE_CONTEXT_BITS) +\n CommandDistanceContext(cmd);\n HistogramAddDistance(©_dist_histograms[context],\n cmd->dist_prefix_ & 0x3FF);\n }\n }\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/histogram.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Models the histograms of literals, commands and distance codes. */\n\n#ifndef BROTLI_ENC_HISTOGRAM_H_\n#define BROTLI_ENC_HISTOGRAM_H_\n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"block_splitter.h\"\n#include \"command.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* The distance symbols effectively used by \"Large Window Brotli\" (32-bit). */\n#define BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS 544\n\n#define FN(X) X ## Literal\n#define DATA_SIZE BROTLI_NUM_LITERAL_SYMBOLS\n#define DataType uint8_t\n#include \"histogram_inc.h\" /* NOLINT(build/include) */\n#undef DataType\n#undef DATA_SIZE\n#undef FN\n\n#define FN(X) X ## Command\n#define DataType uint16_t\n#define DATA_SIZE BROTLI_NUM_COMMAND_SYMBOLS\n#include \"histogram_inc.h\" /* NOLINT(build/include) */\n#undef DATA_SIZE\n#undef FN\n\n#define FN(X) X ## Distance\n#define DATA_SIZE BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS\n#include \"histogram_inc.h\" /* NOLINT(build/include) */\n#undef DataType\n#undef DATA_SIZE\n#undef FN\n\nBROTLI_INTERNAL void BrotliBuildHistogramsWithContext(\n const Command* cmds, const size_t num_commands,\n const BlockSplit* literal_split, const BlockSplit* insert_and_copy_split,\n const BlockSplit* dist_split, const uint8_t* ringbuffer, size_t pos,\n size_t mask, uint8_t prev_byte, uint8_t prev_byte2,\n const ContextType* context_modes, HistogramLiteral* literal_histograms,\n HistogramCommand* insert_and_copy_histograms,\n HistogramDistance* copy_dist_histograms);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_HISTOGRAM_H_ */\n" }, { "path": "c/enc/histogram_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: Histogram, DATA_SIZE, DataType */\n\n/* A simple container for histograms of data in blocks. */\n\ntypedef struct FN(Histogram) {\n uint32_t data_[DATA_SIZE];\n size_t total_count_;\n double bit_cost_;\n} FN(Histogram);\n\nstatic BROTLI_INLINE void FN(HistogramClear)(FN(Histogram)* self) {\n memset(self->data_, 0, sizeof(self->data_));\n self->total_count_ = 0;\n self->bit_cost_ = HUGE_VAL;\n}\n\nstatic BROTLI_INLINE void FN(ClearHistograms)(\n FN(Histogram)* array, size_t length) {\n size_t i;\n for (i = 0; i < length; ++i) FN(HistogramClear)(array + i);\n}\n\nstatic BROTLI_INLINE void FN(HistogramAdd)(FN(Histogram)* self, size_t val) {\n ++self->data_[val];\n ++self->total_count_;\n}\n\nstatic BROTLI_INLINE void FN(HistogramAddVector)(FN(Histogram)* self,\n const DataType* p, size_t n) {\n self->total_count_ += n;\n n += 1;\n while (--n) ++self->data_[*p++];\n}\n\nstatic BROTLI_INLINE void FN(HistogramAddHistogram)(FN(Histogram)* self,\n const FN(Histogram)* v) {\n size_t i;\n self->total_count_ += v->total_count_;\n for (i = 0; i < DATA_SIZE; ++i) {\n self->data_[i] += v->data_[i];\n }\n}\n\nstatic BROTLI_INLINE size_t FN(HistogramDataSize)(void) { return DATA_SIZE; }\n" }, { "path": "c/enc/literal_cost.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Literal cost model to allow backward reference replacement to be efficient.\n*/\n\n#include \"literal_cost.h\"\n\n#include \"../common/platform.h\"\n#include \"fast_log.h\"\n#include \"utf8_util.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic size_t UTF8Position(size_t last, size_t c, size_t clamp) {\n if (c < 128) {\n return 0; /* Next one is the 'Byte 1' again. */\n } else if (c >= 192) { /* Next one is the 'Byte 2' of utf-8 encoding. */\n return BROTLI_MIN(size_t, 1, clamp);\n } else {\n /* Let's decide over the last byte if this ends the sequence. */\n if (last < 0xE0) {\n return 0; /* Completed two or three byte coding. */\n } else { /* Next one is the 'Byte 3' of utf-8 encoding. */\n return BROTLI_MIN(size_t, 2, clamp);\n }\n }\n}\n\nstatic size_t DecideMultiByteStatsLevel(size_t pos, size_t len, size_t mask,\n const uint8_t* data) {\n size_t counts[3] = { 0 };\n size_t max_utf8 = 1; /* should be 2, but 1 compresses better. */\n size_t last_c = 0;\n size_t i;\n for (i = 0; i < len; ++i) {\n size_t c = data[(pos + i) & mask];\n ++counts[UTF8Position(last_c, c, 2)];\n last_c = c;\n }\n if (counts[2] < 500) {\n max_utf8 = 1;\n }\n if (counts[1] + counts[2] < 25) {\n max_utf8 = 0;\n }\n return max_utf8;\n}\n\nstatic void EstimateBitCostsForLiteralsUTF8(size_t pos, size_t len, size_t mask,\n const uint8_t* data,\n size_t* histogram, float* cost) {\n /* max_utf8 is 0 (normal ASCII single byte modeling),\n 1 (for 2-byte UTF-8 modeling), or 2 (for 3-byte UTF-8 modeling). */\n const size_t max_utf8 = DecideMultiByteStatsLevel(pos, len, mask, data);\n size_t window_half = 495;\n size_t in_window = BROTLI_MIN(size_t, window_half, len);\n size_t in_window_utf8[3] = { 0 };\n size_t i;\n memset(histogram, 0, 3 * 256 * sizeof(histogram[0]));\n\n { /* Bootstrap histograms. */\n size_t last_c = 0;\n size_t utf8_pos = 0;\n for (i = 0; i < in_window; ++i) {\n size_t c = data[(pos + i) & mask];\n ++histogram[256 * utf8_pos + c];\n ++in_window_utf8[utf8_pos];\n utf8_pos = UTF8Position(last_c, c, max_utf8);\n last_c = c;\n }\n }\n\n /* Compute bit costs with sliding window. */\n for (i = 0; i < len; ++i) {\n if (i >= window_half) {\n /* Remove a byte in the past. */\n size_t c =\n i < window_half + 1 ? 0 : data[(pos + i - window_half - 1) & mask];\n size_t last_c =\n i < window_half + 2 ? 0 : data[(pos + i - window_half - 2) & mask];\n size_t utf8_pos2 = UTF8Position(last_c, c, max_utf8);\n --histogram[256 * utf8_pos2 + data[(pos + i - window_half) & mask]];\n --in_window_utf8[utf8_pos2];\n }\n if (i + window_half < len) {\n /* Add a byte in the future. */\n size_t c = data[(pos + i + window_half - 1) & mask];\n size_t last_c = data[(pos + i + window_half - 2) & mask];\n size_t utf8_pos2 = UTF8Position(last_c, c, max_utf8);\n ++histogram[256 * utf8_pos2 + data[(pos + i + window_half) & mask]];\n ++in_window_utf8[utf8_pos2];\n }\n {\n size_t c = i < 1 ? 0 : data[(pos + i - 1) & mask];\n size_t last_c = i < 2 ? 0 : data[(pos + i - 2) & mask];\n size_t utf8_pos = UTF8Position(last_c, c, max_utf8);\n size_t masked_pos = (pos + i) & mask;\n size_t histo = histogram[256 * utf8_pos + data[masked_pos]];\n static const size_t prologue_length = 2000;\n static const double multiplier = 0.35 / 2000;\n double lit_cost;\n if (histo == 0) {\n histo = 1;\n }\n lit_cost = FastLog2(in_window_utf8[utf8_pos]) - FastLog2(histo);\n lit_cost += 0.02905;\n if (lit_cost < 1.0) {\n lit_cost *= 0.5;\n lit_cost += 0.5;\n }\n /* Make the first bytes more expensive -- seems to help, not sure why.\n Perhaps because the entropy source is changing its properties\n rapidly in the beginning of the file, perhaps because the beginning\n of the data is a statistical \"anomaly\". */\n if (i < prologue_length) {\n lit_cost += 0.35 + multiplier * (double)i;\n }\n cost[i] = (float)lit_cost;\n }\n }\n}\n\nvoid BrotliEstimateBitCostsForLiterals(size_t pos, size_t len, size_t mask,\n const uint8_t* data,\n size_t* histogram, float* cost) {\n if (BrotliIsMostlyUTF8(data, pos, mask, len, kMinUTF8Ratio)) {\n EstimateBitCostsForLiteralsUTF8(pos, len, mask, data, histogram, cost);\n return;\n } else {\n size_t window_half = 2000;\n size_t in_window = BROTLI_MIN(size_t, window_half, len);\n size_t i;\n memset(histogram, 0, 256 * sizeof(histogram[0]));\n\n /* Bootstrap histogram. */\n for (i = 0; i < in_window; ++i) {\n ++histogram[data[(pos + i) & mask]];\n }\n\n /* Compute bit costs with sliding window. */\n for (i = 0; i < len; ++i) {\n size_t histo;\n if (i >= window_half) {\n /* Remove a byte in the past. */\n --histogram[data[(pos + i - window_half) & mask]];\n --in_window;\n }\n if (i + window_half < len) {\n /* Add a byte in the future. */\n ++histogram[data[(pos + i + window_half) & mask]];\n ++in_window;\n }\n histo = histogram[data[(pos + i) & mask]];\n if (histo == 0) {\n histo = 1;\n }\n {\n double lit_cost = FastLog2(in_window) - FastLog2(histo);\n lit_cost += 0.029;\n if (lit_cost < 1.0) {\n lit_cost *= 0.5;\n lit_cost += 0.5;\n }\n cost[i] = (float)lit_cost;\n }\n }\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/literal_cost.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Literal cost model to allow backward reference replacement to be efficient.\n*/\n\n#ifndef BROTLI_ENC_LITERAL_COST_H_\n#define BROTLI_ENC_LITERAL_COST_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Estimates how many bits the literals in the interval [pos, pos + len) in the\n ring-buffer (data, mask) will take entropy coded and writes these estimates\n to the cost[0..len) array. */\nBROTLI_INTERNAL void BrotliEstimateBitCostsForLiterals(\n size_t pos, size_t len, size_t mask, const uint8_t* data, size_t* histogram,\n float* cost);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_LITERAL_COST_H_ */\n" }, { "path": "c/enc/matching_tag_mask.h", "content": "#ifndef THIRD_PARTY_BROTLI_ENC_MATCHING_TAG_MASK_H_\n#define THIRD_PARTY_BROTLI_ENC_MATCHING_TAG_MASK_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__SSE2__) || defined(_M_AMD64) || \\\n (defined(_M_IX86) && defined(_M_IX86_FP) && (_M_IX86_FP >= 2))\n#define SUPPORTS_SSE_2\n#endif\n\n#if defined(SUPPORTS_SSE_2)\n#include \n#endif\n\n\nstatic BROTLI_INLINE uint64_t GetMatchingTagMask(\n size_t chunk_count, const uint8_t tag,\n const uint8_t* BROTLI_RESTRICT tag_bucket, const size_t head) {\n uint64_t matches = 0;\n#if defined(SUPPORTS_SSE_2)\n const __m128i comparison_mask = _mm_set1_epi8((char)tag);\n size_t i;\n for (i = 0; i < chunk_count && i < 4; i++) {\n const __m128i chunk =\n _mm_loadu_si128((const __m128i*)(const void*)(tag_bucket + 16 * i));\n const __m128i equal_mask = _mm_cmpeq_epi8(chunk, comparison_mask);\n matches |= (uint64_t)_mm_movemask_epi8(equal_mask) << 16 * i;\n }\n#else\n const int chunk_size = sizeof(size_t);\n const size_t shift_amount = ((chunk_size * 8) - chunk_size);\n const size_t xFF = ~((size_t)0);\n const size_t x01 = xFF / 0xFF;\n const size_t x80 = x01 << 7;\n const size_t splat_char = tag * x01;\n int i = ((int)chunk_count * 16) - chunk_size;\n BROTLI_DCHECK((sizeof(size_t) == 4) || (sizeof(size_t) == 8));\n#if BROTLI_LITTLE_ENDIAN\n const size_t extractMagic = (xFF / 0x7F) >> chunk_size;\n do {\n size_t chunk = BrotliUnalignedReadSizeT(&tag_bucket[i]);\n chunk ^= splat_char;\n chunk = (((chunk | x80) - x01) | chunk) & x80;\n matches <<= chunk_size;\n matches |= (chunk * extractMagic) >> shift_amount;\n i -= chunk_size;\n } while (i >= 0);\n#else\n const size_t msb = xFF ^ (xFF >> 1);\n const size_t extractMagic = (msb / 0x1FF) | msb;\n do {\n size_t chunk = BrotliUnalignedReadSizeT(&tag_bucket[i]);\n chunk ^= splat_char;\n chunk = (((chunk | x80) - x01) | chunk) & x80;\n matches <<= chunk_size;\n matches |= ((chunk >> 7) * extractMagic) >> shift_amount;\n i -= chunk_size;\n } while (i >= 0);\n#endif\n matches = ~matches;\n#endif\n if (chunk_count == 1) return BrotliRotateRight16((uint16_t)matches, head);\n if (chunk_count == 2) return BrotliRotateRight32((uint32_t)matches, head);\n return BrotliRotateRight64(matches, head);\n}\n\n#undef SUPPORTS_SSE_2\n\n#endif // THIRD_PARTY_BROTLI_ENC_MATCHING_TAG_MASK_H_\n" }, { "path": "c/enc/memory.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Algorithms for distributing the literals and commands of a metablock between\n block types and contexts. */\n\n#include \"memory.h\"\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define MAX_NEW_ALLOCATED (BROTLI_ENCODER_MEMORY_MANAGER_SLOTS >> 2)\n#define MAX_NEW_FREED (BROTLI_ENCODER_MEMORY_MANAGER_SLOTS >> 2)\n#define MAX_PERM_ALLOCATED (BROTLI_ENCODER_MEMORY_MANAGER_SLOTS >> 1)\n\n#define PERM_ALLOCATED_OFFSET 0\n#define NEW_ALLOCATED_OFFSET MAX_PERM_ALLOCATED\n#define NEW_FREED_OFFSET (MAX_PERM_ALLOCATED + MAX_NEW_ALLOCATED)\n\nvoid BrotliInitMemoryManager(\n MemoryManager* m, brotli_alloc_func alloc_func, brotli_free_func free_func,\n void* opaque) {\n if (!alloc_func) {\n m->alloc_func = BrotliDefaultAllocFunc;\n m->free_func = BrotliDefaultFreeFunc;\n m->opaque = 0;\n } else {\n m->alloc_func = alloc_func;\n m->free_func = free_func;\n m->opaque = opaque;\n }\n#if !defined(BROTLI_ENCODER_EXIT_ON_OOM)\n m->is_oom = BROTLI_FALSE;\n m->perm_allocated = 0;\n m->new_allocated = 0;\n m->new_freed = 0;\n#endif /* BROTLI_ENCODER_EXIT_ON_OOM */\n}\n\n#if defined(BROTLI_ENCODER_EXIT_ON_OOM)\n\nvoid* BrotliAllocate(MemoryManager* m, size_t n) {\n void* result = m->alloc_func(m->opaque, n);\n if (!result) exit(EXIT_FAILURE);\n return result;\n}\n\nvoid BrotliFree(MemoryManager* m, void* p) {\n m->free_func(m->opaque, p);\n}\n\nvoid BrotliWipeOutMemoryManager(MemoryManager* m) {\n BROTLI_UNUSED(m);\n}\n\n#else /* BROTLI_ENCODER_EXIT_ON_OOM */\n\nstatic void SortPointers(void** items, const size_t n) {\n /* Shell sort. */\n /* TODO(eustas): fine-tune for \"many slots\" case */\n static const size_t gaps[] = {23, 10, 4, 1};\n int g = 0;\n for (; g < 4; ++g) {\n size_t gap = gaps[g];\n size_t i;\n for (i = gap; i < n; ++i) {\n size_t j = i;\n void* tmp = items[i];\n for (; j >= gap && tmp < items[j - gap]; j -= gap) {\n items[j] = items[j - gap];\n }\n items[j] = tmp;\n }\n }\n}\n\nstatic size_t Annihilate(void** a, size_t a_len, void** b, size_t b_len) {\n size_t a_read_index = 0;\n size_t b_read_index = 0;\n size_t a_write_index = 0;\n size_t b_write_index = 0;\n size_t annihilated = 0;\n while (a_read_index < a_len && b_read_index < b_len) {\n if (a[a_read_index] == b[b_read_index]) {\n a_read_index++;\n b_read_index++;\n annihilated++;\n } else if (a[a_read_index] < b[b_read_index]) {\n a[a_write_index++] = a[a_read_index++];\n } else {\n b[b_write_index++] = b[b_read_index++];\n }\n }\n while (a_read_index < a_len) a[a_write_index++] = a[a_read_index++];\n while (b_read_index < b_len) b[b_write_index++] = b[b_read_index++];\n return annihilated;\n}\n\nstatic void CollectGarbagePointers(MemoryManager* m) {\n size_t annihilated;\n SortPointers(m->pointers + NEW_ALLOCATED_OFFSET, m->new_allocated);\n SortPointers(m->pointers + NEW_FREED_OFFSET, m->new_freed);\n annihilated = Annihilate(\n m->pointers + NEW_ALLOCATED_OFFSET, m->new_allocated,\n m->pointers + NEW_FREED_OFFSET, m->new_freed);\n m->new_allocated -= annihilated;\n m->new_freed -= annihilated;\n\n if (m->new_freed != 0) {\n annihilated = Annihilate(\n m->pointers + PERM_ALLOCATED_OFFSET, m->perm_allocated,\n m->pointers + NEW_FREED_OFFSET, m->new_freed);\n m->perm_allocated -= annihilated;\n m->new_freed -= annihilated;\n BROTLI_DCHECK(m->new_freed == 0);\n }\n\n if (m->new_allocated != 0) {\n BROTLI_DCHECK(m->perm_allocated + m->new_allocated <= MAX_PERM_ALLOCATED);\n memcpy(m->pointers + PERM_ALLOCATED_OFFSET + m->perm_allocated,\n m->pointers + NEW_ALLOCATED_OFFSET,\n sizeof(void*) * m->new_allocated);\n m->perm_allocated += m->new_allocated;\n m->new_allocated = 0;\n SortPointers(m->pointers + PERM_ALLOCATED_OFFSET, m->perm_allocated);\n }\n}\n\nvoid* BrotliAllocate(MemoryManager* m, size_t n) {\n void* result = m->alloc_func(m->opaque, n);\n if (!result) {\n m->is_oom = BROTLI_TRUE;\n return NULL;\n }\n if (m->new_allocated == MAX_NEW_ALLOCATED) CollectGarbagePointers(m);\n m->pointers[NEW_ALLOCATED_OFFSET + (m->new_allocated++)] = result;\n return result;\n}\n\nvoid BrotliFree(MemoryManager* m, void* p) {\n if (!p) return;\n m->free_func(m->opaque, p);\n if (m->new_freed == MAX_NEW_FREED) CollectGarbagePointers(m);\n m->pointers[NEW_FREED_OFFSET + (m->new_freed++)] = p;\n}\n\nvoid BrotliWipeOutMemoryManager(MemoryManager* m) {\n size_t i;\n CollectGarbagePointers(m);\n /* Now all unfreed pointers are in perm-allocated list. */\n for (i = 0; i < m->perm_allocated; ++i) {\n m->free_func(m->opaque, m->pointers[PERM_ALLOCATED_OFFSET + i]);\n }\n m->perm_allocated = 0;\n}\n\n#endif /* BROTLI_ENCODER_EXIT_ON_OOM */\n\nvoid* BrotliBootstrapAlloc(size_t size,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) {\n if (!alloc_func && !free_func) {\n return malloc(size);\n } else if (alloc_func && free_func) {\n return alloc_func(opaque, size);\n }\n return NULL;\n}\n\nvoid BrotliBootstrapFree(void* address, MemoryManager* m) {\n if (!address) {\n /* Should not happen! */\n return;\n } else {\n /* Copy values, as those would be freed. */\n brotli_free_func free_func = m->free_func;\n void* opaque = m->opaque;\n free_func(opaque, address);\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/memory.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Macros for memory management. */\n\n#ifndef BROTLI_ENC_MEMORY_H_\n#define BROTLI_ENC_MEMORY_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if !defined(BROTLI_ENCODER_CLEANUP_ON_OOM) && \\\n !defined(BROTLI_ENCODER_EXIT_ON_OOM)\n#define BROTLI_ENCODER_EXIT_ON_OOM\n#endif\n\n#if !defined(BROTLI_ENCODER_EXIT_ON_OOM)\n#if defined(BROTLI_EXPERIMENTAL)\n#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS (48*1024)\n#else /* BROTLI_EXPERIMENTAL */\n#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS 256\n#endif /* BROTLI_EXPERIMENTAL */\n#else /* BROTLI_ENCODER_EXIT_ON_OOM */\n#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS 0\n#endif /* BROTLI_ENCODER_EXIT_ON_OOM */\n\ntypedef struct MemoryManager {\n brotli_alloc_func alloc_func;\n brotli_free_func free_func;\n void* opaque;\n#if !defined(BROTLI_ENCODER_EXIT_ON_OOM)\n BROTLI_BOOL is_oom;\n size_t perm_allocated;\n size_t new_allocated;\n size_t new_freed;\n void* pointers[BROTLI_ENCODER_MEMORY_MANAGER_SLOTS];\n#endif /* BROTLI_ENCODER_EXIT_ON_OOM */\n} MemoryManager;\n\nBROTLI_INTERNAL void BrotliInitMemoryManager(\n MemoryManager* m, brotli_alloc_func alloc_func, brotli_free_func free_func,\n void* opaque);\n\nBROTLI_INTERNAL void* BrotliAllocate(MemoryManager* m, size_t n);\n#define BROTLI_ALLOC(M, T, N) \\\n ((N) > 0 ? ((T*)BrotliAllocate((M), (N) * sizeof(T))) : NULL)\n\nBROTLI_INTERNAL void BrotliFree(MemoryManager* m, void* p);\n#define BROTLI_FREE(M, P) { \\\n BrotliFree((M), (P)); \\\n P = NULL; \\\n}\n\n#if defined(BROTLI_ENCODER_EXIT_ON_OOM)\n#define BROTLI_IS_OOM(M) (!!0)\n#else /* BROTLI_ENCODER_EXIT_ON_OOM */\n#define BROTLI_IS_OOM(M) (!!(M)->is_oom)\n#endif /* BROTLI_ENCODER_EXIT_ON_OOM */\n\n/*\nBROTLI_IS_NULL is a fake check, BROTLI_IS_OOM does the heavy lifting.\nThe only purpose of it is to explain static analyzers the state of things.\nNB: use ONLY together with BROTLI_IS_OOM\n AND ONLY for allocations in the current scope.\n */\n#if defined(__clang_analyzer__) && !defined(BROTLI_ENCODER_EXIT_ON_OOM)\n#define BROTLI_IS_NULL(A) ((A) == nullptr)\n#else /* defined(__clang_analyzer__) */\n#define BROTLI_IS_NULL(A) (!!0)\n#endif /* defined(__clang_analyzer__) */\n\nBROTLI_INTERNAL void BrotliWipeOutMemoryManager(MemoryManager* m);\n\n/*\nDynamically grows array capacity to at least the requested size\nM: MemoryManager\nT: data type\nA: array\nC: capacity\nR: requested size\n*/\n#define BROTLI_ENSURE_CAPACITY(M, T, A, C, R) { \\\n if (C < (R)) { \\\n size_t _new_size = (C == 0) ? (R) : C; \\\n T* new_array; \\\n while (_new_size < (R)) _new_size *= 2; \\\n new_array = BROTLI_ALLOC((M), T, _new_size); \\\n if (!BROTLI_IS_OOM(M) && !BROTLI_IS_NULL(new_array) && C != 0) \\\n memcpy(new_array, A, C * sizeof(T)); \\\n BROTLI_FREE((M), A); \\\n A = new_array; \\\n C = _new_size; \\\n } \\\n}\n\n/*\nAppends value and dynamically grows array capacity when needed\nM: MemoryManager\nT: data type\nA: array\nC: array capacity\nS: array size\nV: value to append\n*/\n#define BROTLI_ENSURE_CAPACITY_APPEND(M, T, A, C, S, V) { \\\n (S)++; \\\n BROTLI_ENSURE_CAPACITY(M, T, A, C, S); \\\n A[(S) - 1] = (V); \\\n}\n\n/* \"Bootstrap\" allocations are not tracked by memory manager; should be used\n only to allocate MemoryManager itself (or structure containing it). */\nBROTLI_INTERNAL void* BrotliBootstrapAlloc(size_t size,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\nBROTLI_INTERNAL void BrotliBootstrapFree(void* address, MemoryManager* m);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_MEMORY_H_ */\n" }, { "path": "c/enc/metablock.c", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Algorithms for distributing the literals and commands of a metablock between\n block types and contexts. */\n\n#include \"metablock.h\"\n\n#include \"../common/constants.h\"\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"bit_cost.h\"\n#include \"block_splitter.h\"\n#include \"cluster.h\"\n#include \"command.h\"\n#include \"entropy_encode.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n#include \"params.h\"\n#include \"prefix.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nvoid BrotliInitDistanceParams(BrotliDistanceParams* dist_params,\n uint32_t npostfix, uint32_t ndirect, BROTLI_BOOL large_window) {\n uint32_t alphabet_size_max;\n uint32_t alphabet_size_limit;\n uint32_t max_distance;\n\n dist_params->distance_postfix_bits = npostfix;\n dist_params->num_direct_distance_codes = ndirect;\n\n alphabet_size_max = BROTLI_DISTANCE_ALPHABET_SIZE(\n npostfix, ndirect, BROTLI_MAX_DISTANCE_BITS);\n alphabet_size_limit = alphabet_size_max;\n max_distance = ndirect + (1U << (BROTLI_MAX_DISTANCE_BITS + npostfix + 2)) -\n (1U << (npostfix + 2));\n\n if (large_window) {\n BrotliDistanceCodeLimit limit = BrotliCalculateDistanceCodeLimit(\n BROTLI_MAX_ALLOWED_DISTANCE, npostfix, ndirect);\n alphabet_size_max = BROTLI_DISTANCE_ALPHABET_SIZE(\n npostfix, ndirect, BROTLI_LARGE_MAX_DISTANCE_BITS);\n alphabet_size_limit = limit.max_alphabet_size;\n max_distance = limit.max_distance;\n }\n\n dist_params->alphabet_size_max = alphabet_size_max;\n dist_params->alphabet_size_limit = alphabet_size_limit;\n dist_params->max_distance = max_distance;\n}\n\nstatic void RecomputeDistancePrefixes(Command* cmds,\n size_t num_commands,\n const BrotliDistanceParams* orig_params,\n const BrotliDistanceParams* new_params) {\n size_t i;\n\n if (orig_params->distance_postfix_bits == new_params->distance_postfix_bits &&\n orig_params->num_direct_distance_codes ==\n new_params->num_direct_distance_codes) {\n return;\n }\n\n for (i = 0; i < num_commands; ++i) {\n Command* cmd = &cmds[i];\n if (CommandCopyLen(cmd) && cmd->cmd_prefix_ >= 128) {\n PrefixEncodeCopyDistance(CommandRestoreDistanceCode(cmd, orig_params),\n new_params->num_direct_distance_codes,\n new_params->distance_postfix_bits,\n &cmd->dist_prefix_,\n &cmd->dist_extra_);\n }\n }\n}\n\nstatic BROTLI_BOOL ComputeDistanceCost(const Command* cmds,\n size_t num_commands,\n const BrotliDistanceParams* orig_params,\n const BrotliDistanceParams* new_params,\n double* cost,\n HistogramDistance* tmp) {\n size_t i;\n BROTLI_BOOL equal_params = BROTLI_FALSE;\n uint16_t dist_prefix;\n uint32_t dist_extra;\n double extra_bits = 0.0;\n HistogramClearDistance(tmp);\n\n if (orig_params->distance_postfix_bits == new_params->distance_postfix_bits &&\n orig_params->num_direct_distance_codes ==\n new_params->num_direct_distance_codes) {\n equal_params = BROTLI_TRUE;\n }\n\n for (i = 0; i < num_commands; i++) {\n const Command* cmd = &cmds[i];\n if (CommandCopyLen(cmd) && cmd->cmd_prefix_ >= 128) {\n if (equal_params) {\n dist_prefix = cmd->dist_prefix_;\n } else {\n uint32_t distance = CommandRestoreDistanceCode(cmd, orig_params);\n if (distance > new_params->max_distance) {\n return BROTLI_FALSE;\n }\n PrefixEncodeCopyDistance(distance,\n new_params->num_direct_distance_codes,\n new_params->distance_postfix_bits,\n &dist_prefix,\n &dist_extra);\n }\n HistogramAddDistance(tmp, dist_prefix & 0x3FF);\n extra_bits += dist_prefix >> 10;\n }\n }\n\n *cost = BrotliPopulationCostDistance(tmp) + extra_bits;\n return BROTLI_TRUE;\n}\n\nvoid BrotliBuildMetaBlock(MemoryManager* m,\n const uint8_t* ringbuffer,\n const size_t pos,\n const size_t mask,\n BrotliEncoderParams* params,\n uint8_t prev_byte,\n uint8_t prev_byte2,\n Command* cmds,\n size_t num_commands,\n ContextType literal_context_mode,\n MetaBlockSplit* mb) {\n /* Histogram ids need to fit in one byte. */\n static const size_t kMaxNumberOfHistograms = 256;\n HistogramDistance* distance_histograms;\n HistogramLiteral* literal_histograms;\n ContextType* literal_context_modes = NULL;\n size_t literal_histograms_size;\n size_t distance_histograms_size;\n size_t i;\n size_t literal_context_multiplier = 1;\n uint32_t npostfix;\n uint32_t ndirect_msb = 0;\n BROTLI_BOOL check_orig = BROTLI_TRUE;\n double best_dist_cost = 1e99;\n BrotliDistanceParams orig_params = params->dist;\n BrotliDistanceParams new_params = params->dist;\n HistogramDistance* tmp = BROTLI_ALLOC(m, HistogramDistance, 1);\n\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(tmp)) return;\n\n for (npostfix = 0; npostfix <= BROTLI_MAX_NPOSTFIX; npostfix++) {\n for (; ndirect_msb < 16; ndirect_msb++) {\n uint32_t ndirect = ndirect_msb << npostfix;\n BROTLI_BOOL skip;\n double dist_cost;\n BrotliInitDistanceParams(&new_params, npostfix, ndirect,\n params->large_window);\n if (npostfix == orig_params.distance_postfix_bits &&\n ndirect == orig_params.num_direct_distance_codes) {\n check_orig = BROTLI_FALSE;\n }\n skip = !ComputeDistanceCost(\n cmds, num_commands, &orig_params, &new_params, &dist_cost, tmp);\n if (skip || (dist_cost > best_dist_cost)) {\n break;\n }\n best_dist_cost = dist_cost;\n params->dist = new_params;\n }\n if (ndirect_msb > 0) ndirect_msb--;\n ndirect_msb /= 2;\n }\n if (check_orig) {\n double dist_cost;\n ComputeDistanceCost(cmds, num_commands, &orig_params, &orig_params,\n &dist_cost, tmp);\n if (dist_cost < best_dist_cost) {\n /* NB: currently unused; uncomment when more param tuning is added. */\n /* best_dist_cost = dist_cost; */\n params->dist = orig_params;\n }\n }\n BROTLI_FREE(m, tmp);\n RecomputeDistancePrefixes(cmds, num_commands, &orig_params, ¶ms->dist);\n\n BrotliSplitBlock(m, cmds, num_commands,\n ringbuffer, pos, mask, params,\n &mb->literal_split,\n &mb->command_split,\n &mb->distance_split);\n if (BROTLI_IS_OOM(m)) return;\n\n if (!params->disable_literal_context_modeling) {\n literal_context_multiplier = 1 << BROTLI_LITERAL_CONTEXT_BITS;\n literal_context_modes =\n BROTLI_ALLOC(m, ContextType, mb->literal_split.num_types);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(literal_context_modes)) return;\n for (i = 0; i < mb->literal_split.num_types; ++i) {\n literal_context_modes[i] = literal_context_mode;\n }\n }\n\n literal_histograms_size =\n mb->literal_split.num_types * literal_context_multiplier;\n literal_histograms =\n BROTLI_ALLOC(m, HistogramLiteral, literal_histograms_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(literal_histograms)) return;\n ClearHistogramsLiteral(literal_histograms, literal_histograms_size);\n\n distance_histograms_size =\n mb->distance_split.num_types << BROTLI_DISTANCE_CONTEXT_BITS;\n distance_histograms =\n BROTLI_ALLOC(m, HistogramDistance, distance_histograms_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(distance_histograms)) return;\n ClearHistogramsDistance(distance_histograms, distance_histograms_size);\n\n BROTLI_DCHECK(mb->command_histograms == 0);\n mb->command_histograms_size = mb->command_split.num_types;\n mb->command_histograms =\n BROTLI_ALLOC(m, HistogramCommand, mb->command_histograms_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->command_histograms)) return;\n ClearHistogramsCommand(mb->command_histograms, mb->command_histograms_size);\n\n BrotliBuildHistogramsWithContext(cmds, num_commands,\n &mb->literal_split, &mb->command_split, &mb->distance_split,\n ringbuffer, pos, mask, prev_byte, prev_byte2, literal_context_modes,\n literal_histograms, mb->command_histograms, distance_histograms);\n BROTLI_FREE(m, literal_context_modes);\n\n BROTLI_DCHECK(mb->literal_context_map == 0);\n mb->literal_context_map_size =\n mb->literal_split.num_types << BROTLI_LITERAL_CONTEXT_BITS;\n mb->literal_context_map =\n BROTLI_ALLOC(m, uint32_t, mb->literal_context_map_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->literal_context_map)) return;\n\n BROTLI_DCHECK(mb->literal_histograms == 0);\n mb->literal_histograms_size = mb->literal_context_map_size;\n mb->literal_histograms =\n BROTLI_ALLOC(m, HistogramLiteral, mb->literal_histograms_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->literal_histograms)) return;\n\n BrotliClusterHistogramsLiteral(m, literal_histograms, literal_histograms_size,\n kMaxNumberOfHistograms, mb->literal_histograms,\n &mb->literal_histograms_size, mb->literal_context_map);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, literal_histograms);\n\n if (params->disable_literal_context_modeling) {\n /* Distribute assignment to all contexts. */\n for (i = mb->literal_split.num_types; i != 0;) {\n size_t j = 0;\n i--;\n for (; j < (1 << BROTLI_LITERAL_CONTEXT_BITS); j++) {\n mb->literal_context_map[(i << BROTLI_LITERAL_CONTEXT_BITS) + j] =\n mb->literal_context_map[i];\n }\n }\n }\n\n BROTLI_DCHECK(mb->distance_context_map == 0);\n mb->distance_context_map_size =\n mb->distance_split.num_types << BROTLI_DISTANCE_CONTEXT_BITS;\n mb->distance_context_map =\n BROTLI_ALLOC(m, uint32_t, mb->distance_context_map_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->distance_context_map)) return;\n\n BROTLI_DCHECK(mb->distance_histograms == 0);\n mb->distance_histograms_size = mb->distance_context_map_size;\n mb->distance_histograms =\n BROTLI_ALLOC(m, HistogramDistance, mb->distance_histograms_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->distance_histograms)) return;\n\n BrotliClusterHistogramsDistance(m, distance_histograms,\n mb->distance_context_map_size,\n kMaxNumberOfHistograms,\n mb->distance_histograms,\n &mb->distance_histograms_size,\n mb->distance_context_map);\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_FREE(m, distance_histograms);\n}\n\n#define FN(X) X ## Literal\n#include \"metablock_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Command\n#include \"metablock_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n#define FN(X) X ## Distance\n#include \"metablock_inc.h\" /* NOLINT(build/include) */\n#undef FN\n\n/* Greedy block splitter for one block category (literal, command or distance).\n Gathers histograms for all context buckets. */\ntypedef struct ContextBlockSplitter {\n /* Alphabet size of particular block category. */\n size_t alphabet_size_;\n size_t num_contexts_;\n size_t max_block_types_;\n /* We collect at least this many symbols for each block. */\n size_t min_block_size_;\n /* We merge histograms A and B if\n entropy(A+B) < entropy(A) + entropy(B) + split_threshold_,\n where A is the current histogram and B is the histogram of the last or the\n second last block type. */\n double split_threshold_;\n\n size_t num_blocks_;\n BlockSplit* split_; /* not owned */\n HistogramLiteral* histograms_; /* not owned */\n size_t* histograms_size_; /* not owned */\n\n /* The number of symbols that we want to collect before deciding on whether\n or not to merge the block with a previous one or emit a new block. */\n size_t target_block_size_;\n /* The number of symbols in the current histogram. */\n size_t block_size_;\n /* Offset of the current histogram. */\n size_t curr_histogram_ix_;\n /* Offset of the histograms of the previous two block types. */\n size_t last_histogram_ix_[2];\n /* Entropy of the previous two block types. */\n double last_entropy_[2 * BROTLI_MAX_STATIC_CONTEXTS];\n /* The number of times we merged the current block with the last one. */\n size_t merge_last_count_;\n} ContextBlockSplitter;\n\nstatic void InitContextBlockSplitter(\n MemoryManager* m, ContextBlockSplitter* self, size_t alphabet_size,\n size_t num_contexts, size_t min_block_size, double split_threshold,\n size_t num_symbols, BlockSplit* split, HistogramLiteral** histograms,\n size_t* histograms_size) {\n size_t max_num_blocks = num_symbols / min_block_size + 1;\n size_t max_num_types;\n BROTLI_DCHECK(num_contexts <= BROTLI_MAX_STATIC_CONTEXTS);\n\n self->alphabet_size_ = alphabet_size;\n self->num_contexts_ = num_contexts;\n self->max_block_types_ = BROTLI_MAX_NUMBER_OF_BLOCK_TYPES / num_contexts;\n self->min_block_size_ = min_block_size;\n self->split_threshold_ = split_threshold;\n self->num_blocks_ = 0;\n self->split_ = split;\n self->histograms_size_ = histograms_size;\n self->target_block_size_ = min_block_size;\n self->block_size_ = 0;\n self->curr_histogram_ix_ = 0;\n self->merge_last_count_ = 0;\n\n /* We have to allocate one more histogram than the maximum number of block\n types for the current histogram when the meta-block is too big. */\n max_num_types =\n BROTLI_MIN(size_t, max_num_blocks, self->max_block_types_ + 1);\n BROTLI_ENSURE_CAPACITY(m, uint8_t,\n split->types, split->types_alloc_size, max_num_blocks);\n BROTLI_ENSURE_CAPACITY(m, uint32_t,\n split->lengths, split->lengths_alloc_size, max_num_blocks);\n if (BROTLI_IS_OOM(m)) return;\n split->num_blocks = max_num_blocks;\n if (BROTLI_IS_OOM(m)) return;\n BROTLI_DCHECK(*histograms == 0);\n *histograms_size = max_num_types * num_contexts;\n *histograms = BROTLI_ALLOC(m, HistogramLiteral, *histograms_size);\n self->histograms_ = *histograms;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(*histograms)) return;\n /* Clear only current histogram. */\n ClearHistogramsLiteral(&self->histograms_[0], num_contexts);\n self->last_histogram_ix_[0] = self->last_histogram_ix_[1] = 0;\n}\n\n/* Does either of three things:\n (1) emits the current block with a new block type;\n (2) emits the current block with the type of the second last block;\n (3) merges the current block with the last block. */\nstatic void ContextBlockSplitterFinishBlock(\n ContextBlockSplitter* self, MemoryManager* m, BROTLI_BOOL is_final) {\n BlockSplit* split = self->split_;\n const size_t num_contexts = self->num_contexts_;\n double* last_entropy = self->last_entropy_;\n HistogramLiteral* histograms = self->histograms_;\n\n if (self->block_size_ < self->min_block_size_) {\n self->block_size_ = self->min_block_size_;\n }\n if (self->num_blocks_ == 0) {\n size_t i;\n /* Create first block. */\n split->lengths[0] = (uint32_t)self->block_size_;\n split->types[0] = 0;\n\n for (i = 0; i < num_contexts; ++i) {\n last_entropy[i] =\n BrotliBitsEntropy(histograms[i].data_, self->alphabet_size_);\n last_entropy[num_contexts + i] = last_entropy[i];\n }\n ++self->num_blocks_;\n ++split->num_types;\n self->curr_histogram_ix_ += num_contexts;\n if (self->curr_histogram_ix_ < *self->histograms_size_) {\n ClearHistogramsLiteral(\n &self->histograms_[self->curr_histogram_ix_], self->num_contexts_);\n }\n self->block_size_ = 0;\n } else if (self->block_size_ > 0) {\n /* Try merging the set of histograms for the current block type with the\n respective set of histograms for the last and second last block types.\n Decide over the split based on the total reduction of entropy across\n all contexts. */\n double entropy[BROTLI_MAX_STATIC_CONTEXTS];\n HistogramLiteral* combined_histo =\n BROTLI_ALLOC(m, HistogramLiteral, 2 * num_contexts);\n double combined_entropy[2 * BROTLI_MAX_STATIC_CONTEXTS];\n double diff[2] = { 0.0 };\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(combined_histo)) return;\n for (i = 0; i < num_contexts; ++i) {\n size_t curr_histo_ix = self->curr_histogram_ix_ + i;\n size_t j;\n entropy[i] = BrotliBitsEntropy(histograms[curr_histo_ix].data_,\n self->alphabet_size_);\n for (j = 0; j < 2; ++j) {\n size_t jx = j * num_contexts + i;\n size_t last_histogram_ix = self->last_histogram_ix_[j] + i;\n combined_histo[jx] = histograms[curr_histo_ix];\n HistogramAddHistogramLiteral(&combined_histo[jx],\n &histograms[last_histogram_ix]);\n combined_entropy[jx] = BrotliBitsEntropy(\n &combined_histo[jx].data_[0], self->alphabet_size_);\n diff[j] += combined_entropy[jx] - entropy[i] - last_entropy[jx];\n }\n }\n\n if (split->num_types < self->max_block_types_ &&\n diff[0] > self->split_threshold_ &&\n diff[1] > self->split_threshold_) {\n /* Create new block. */\n split->lengths[self->num_blocks_] = (uint32_t)self->block_size_;\n split->types[self->num_blocks_] = (uint8_t)split->num_types;\n self->last_histogram_ix_[1] = self->last_histogram_ix_[0];\n self->last_histogram_ix_[0] = split->num_types * num_contexts;\n for (i = 0; i < num_contexts; ++i) {\n last_entropy[num_contexts + i] = last_entropy[i];\n last_entropy[i] = entropy[i];\n }\n ++self->num_blocks_;\n ++split->num_types;\n self->curr_histogram_ix_ += num_contexts;\n if (self->curr_histogram_ix_ < *self->histograms_size_) {\n ClearHistogramsLiteral(\n &self->histograms_[self->curr_histogram_ix_], self->num_contexts_);\n }\n self->block_size_ = 0;\n self->merge_last_count_ = 0;\n self->target_block_size_ = self->min_block_size_;\n } else if (diff[1] < diff[0] - 20.0) {\n /* Combine this block with second last block. */\n split->lengths[self->num_blocks_] = (uint32_t)self->block_size_;\n split->types[self->num_blocks_] = split->types[self->num_blocks_ - 2];\n BROTLI_SWAP(size_t, self->last_histogram_ix_, 0, 1);\n for (i = 0; i < num_contexts; ++i) {\n histograms[self->last_histogram_ix_[0] + i] =\n combined_histo[num_contexts + i];\n last_entropy[num_contexts + i] = last_entropy[i];\n last_entropy[i] = combined_entropy[num_contexts + i];\n HistogramClearLiteral(&histograms[self->curr_histogram_ix_ + i]);\n }\n ++self->num_blocks_;\n self->block_size_ = 0;\n self->merge_last_count_ = 0;\n self->target_block_size_ = self->min_block_size_;\n } else {\n /* Combine this block with last block. */\n split->lengths[self->num_blocks_ - 1] += (uint32_t)self->block_size_;\n for (i = 0; i < num_contexts; ++i) {\n histograms[self->last_histogram_ix_[0] + i] = combined_histo[i];\n last_entropy[i] = combined_entropy[i];\n if (split->num_types == 1) {\n last_entropy[num_contexts + i] = last_entropy[i];\n }\n HistogramClearLiteral(&histograms[self->curr_histogram_ix_ + i]);\n }\n self->block_size_ = 0;\n if (++self->merge_last_count_ > 1) {\n self->target_block_size_ += self->min_block_size_;\n }\n }\n BROTLI_FREE(m, combined_histo);\n }\n if (is_final) {\n *self->histograms_size_ = split->num_types * num_contexts;\n split->num_blocks = self->num_blocks_;\n }\n}\n\n/* Adds the next symbol to the current block type and context. When the\n current block reaches the target size, decides on merging the block. */\nstatic void ContextBlockSplitterAddSymbol(\n ContextBlockSplitter* self, MemoryManager* m,\n size_t symbol, size_t context) {\n HistogramAddLiteral(&self->histograms_[self->curr_histogram_ix_ + context],\n symbol);\n ++self->block_size_;\n if (self->block_size_ == self->target_block_size_) {\n ContextBlockSplitterFinishBlock(self, m, /* is_final = */ BROTLI_FALSE);\n if (BROTLI_IS_OOM(m)) return;\n }\n}\n\nstatic void MapStaticContexts(MemoryManager* m,\n size_t num_contexts,\n const uint32_t* static_context_map,\n MetaBlockSplit* mb) {\n size_t i;\n BROTLI_DCHECK(mb->literal_context_map == 0);\n mb->literal_context_map_size =\n mb->literal_split.num_types << BROTLI_LITERAL_CONTEXT_BITS;\n mb->literal_context_map =\n BROTLI_ALLOC(m, uint32_t, mb->literal_context_map_size);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(mb->literal_context_map)) return;\n\n for (i = 0; i < mb->literal_split.num_types; ++i) {\n uint32_t offset = (uint32_t)(i * num_contexts);\n size_t j;\n for (j = 0; j < (1u << BROTLI_LITERAL_CONTEXT_BITS); ++j) {\n mb->literal_context_map[(i << BROTLI_LITERAL_CONTEXT_BITS) + j] =\n offset + static_context_map[j];\n }\n }\n}\n\ntypedef struct GreedyMetablockArena {\n union {\n BlockSplitterLiteral plain;\n ContextBlockSplitter ctx;\n } lit_blocks;\n BlockSplitterCommand cmd_blocks;\n BlockSplitterDistance dist_blocks;\n} GreedyMetablockArena;\n\nstatic BROTLI_INLINE void BrotliBuildMetaBlockGreedyInternal(\n MemoryManager* m, GreedyMetablockArena* arena, const uint8_t* ringbuffer,\n size_t pos, size_t mask, uint8_t prev_byte, uint8_t prev_byte2,\n ContextLut literal_context_lut, const size_t num_contexts,\n const uint32_t* static_context_map, const Command* commands,\n size_t n_commands, MetaBlockSplit* mb) {\n size_t num_literals = 0;\n size_t i;\n for (i = 0; i < n_commands; ++i) {\n num_literals += commands[i].insert_len_;\n }\n\n if (num_contexts == 1) {\n InitBlockSplitterLiteral(m, &arena->lit_blocks.plain, 256, 512, 400.0,\n num_literals, &mb->literal_split, &mb->literal_histograms,\n &mb->literal_histograms_size);\n } else {\n InitContextBlockSplitter(m, &arena->lit_blocks.ctx, 256, num_contexts, 512,\n 400.0, num_literals, &mb->literal_split, &mb->literal_histograms,\n &mb->literal_histograms_size);\n }\n if (BROTLI_IS_OOM(m)) return;\n InitBlockSplitterCommand(m, &arena->cmd_blocks, BROTLI_NUM_COMMAND_SYMBOLS,\n 1024, 500.0, n_commands, &mb->command_split, &mb->command_histograms,\n &mb->command_histograms_size);\n if (BROTLI_IS_OOM(m)) return;\n InitBlockSplitterDistance(m, &arena->dist_blocks, 64, 512, 100.0, n_commands,\n &mb->distance_split, &mb->distance_histograms,\n &mb->distance_histograms_size);\n if (BROTLI_IS_OOM(m)) return;\n\n for (i = 0; i < n_commands; ++i) {\n const Command cmd = commands[i];\n size_t j;\n BlockSplitterAddSymbolCommand(&arena->cmd_blocks, cmd.cmd_prefix_);\n for (j = cmd.insert_len_; j != 0; --j) {\n uint8_t literal = ringbuffer[pos & mask];\n if (num_contexts == 1) {\n BlockSplitterAddSymbolLiteral(&arena->lit_blocks.plain, literal);\n } else {\n size_t context =\n BROTLI_CONTEXT(prev_byte, prev_byte2, literal_context_lut);\n ContextBlockSplitterAddSymbol(&arena->lit_blocks.ctx, m, literal,\n static_context_map[context]);\n if (BROTLI_IS_OOM(m)) return;\n }\n prev_byte2 = prev_byte;\n prev_byte = literal;\n ++pos;\n }\n pos += CommandCopyLen(&cmd);\n if (CommandCopyLen(&cmd)) {\n prev_byte2 = ringbuffer[(pos - 2) & mask];\n prev_byte = ringbuffer[(pos - 1) & mask];\n if (cmd.cmd_prefix_ >= 128) {\n BlockSplitterAddSymbolDistance(\n &arena->dist_blocks, cmd.dist_prefix_ & 0x3FF);\n }\n }\n }\n\n if (num_contexts == 1) {\n BlockSplitterFinishBlockLiteral(\n &arena->lit_blocks.plain, /* is_final = */ BROTLI_TRUE);\n } else {\n ContextBlockSplitterFinishBlock(\n &arena->lit_blocks.ctx, m, /* is_final = */ BROTLI_TRUE);\n if (BROTLI_IS_OOM(m)) return;\n }\n BlockSplitterFinishBlockCommand(\n &arena->cmd_blocks, /* is_final = */ BROTLI_TRUE);\n BlockSplitterFinishBlockDistance(\n &arena->dist_blocks, /* is_final = */ BROTLI_TRUE);\n\n if (num_contexts > 1) {\n MapStaticContexts(m, num_contexts, static_context_map, mb);\n }\n}\n\nvoid BrotliBuildMetaBlockGreedy(MemoryManager* m,\n const uint8_t* ringbuffer,\n size_t pos,\n size_t mask,\n uint8_t prev_byte,\n uint8_t prev_byte2,\n ContextLut literal_context_lut,\n size_t num_contexts,\n const uint32_t* static_context_map,\n const Command* commands,\n size_t n_commands,\n MetaBlockSplit* mb) {\n GreedyMetablockArena* arena = BROTLI_ALLOC(m, GreedyMetablockArena, 1);\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(arena)) return;\n if (num_contexts == 1) {\n BrotliBuildMetaBlockGreedyInternal(m, arena, ringbuffer, pos, mask,\n prev_byte, prev_byte2, literal_context_lut, 1, NULL, commands,\n n_commands, mb);\n } else {\n BrotliBuildMetaBlockGreedyInternal(m, arena, ringbuffer, pos, mask,\n prev_byte, prev_byte2, literal_context_lut, num_contexts,\n static_context_map, commands, n_commands, mb);\n }\n BROTLI_FREE(m, arena);\n}\n\nvoid BrotliOptimizeHistograms(uint32_t num_distance_codes,\n MetaBlockSplit* mb) {\n uint8_t good_for_rle[BROTLI_NUM_COMMAND_SYMBOLS];\n size_t i;\n for (i = 0; i < mb->literal_histograms_size; ++i) {\n BrotliOptimizeHuffmanCountsForRle(256, mb->literal_histograms[i].data_,\n good_for_rle);\n }\n for (i = 0; i < mb->command_histograms_size; ++i) {\n BrotliOptimizeHuffmanCountsForRle(BROTLI_NUM_COMMAND_SYMBOLS,\n mb->command_histograms[i].data_,\n good_for_rle);\n }\n for (i = 0; i < mb->distance_histograms_size; ++i) {\n BrotliOptimizeHuffmanCountsForRle(num_distance_codes,\n mb->distance_histograms[i].data_,\n good_for_rle);\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/metablock.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Algorithms for distributing the literals and commands of a metablock between\n block types and contexts. */\n\n#ifndef BROTLI_ENC_METABLOCK_H_\n#define BROTLI_ENC_METABLOCK_H_\n\n#include \"../common/context.h\"\n#include \"../common/platform.h\"\n#include \"block_splitter.h\"\n#include \"command.h\"\n#include \"histogram.h\"\n#include \"memory.h\"\n#include \"params.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_MAX_STATIC_CONTEXTS 13\n\ntypedef struct MetaBlockSplit {\n BlockSplit literal_split;\n BlockSplit command_split;\n BlockSplit distance_split;\n uint32_t* literal_context_map;\n size_t literal_context_map_size;\n uint32_t* distance_context_map;\n size_t distance_context_map_size;\n HistogramLiteral* literal_histograms;\n size_t literal_histograms_size;\n HistogramCommand* command_histograms;\n size_t command_histograms_size;\n HistogramDistance* distance_histograms;\n size_t distance_histograms_size;\n} MetaBlockSplit;\n\nstatic BROTLI_INLINE void InitMetaBlockSplit(MetaBlockSplit* mb) {\n BrotliInitBlockSplit(&mb->literal_split);\n BrotliInitBlockSplit(&mb->command_split);\n BrotliInitBlockSplit(&mb->distance_split);\n mb->literal_context_map = 0;\n mb->literal_context_map_size = 0;\n mb->distance_context_map = 0;\n mb->distance_context_map_size = 0;\n mb->literal_histograms = 0;\n mb->literal_histograms_size = 0;\n mb->command_histograms = 0;\n mb->command_histograms_size = 0;\n mb->distance_histograms = 0;\n mb->distance_histograms_size = 0;\n}\n\nstatic BROTLI_INLINE void DestroyMetaBlockSplit(\n MemoryManager* m, MetaBlockSplit* mb) {\n BrotliDestroyBlockSplit(m, &mb->literal_split);\n BrotliDestroyBlockSplit(m, &mb->command_split);\n BrotliDestroyBlockSplit(m, &mb->distance_split);\n BROTLI_FREE(m, mb->literal_context_map);\n BROTLI_FREE(m, mb->distance_context_map);\n BROTLI_FREE(m, mb->literal_histograms);\n BROTLI_FREE(m, mb->command_histograms);\n BROTLI_FREE(m, mb->distance_histograms);\n}\n\n/* Uses the slow shortest-path block splitter and does context clustering.\n The distance parameters are dynamically selected based on the commands\n which get recomputed under the new distance parameters. The new distance\n parameters are stored into *params. */\nBROTLI_INTERNAL void BrotliBuildMetaBlock(MemoryManager* m,\n const uint8_t* ringbuffer,\n const size_t pos,\n const size_t mask,\n BrotliEncoderParams* params,\n uint8_t prev_byte,\n uint8_t prev_byte2,\n Command* cmds,\n size_t num_commands,\n ContextType literal_context_mode,\n MetaBlockSplit* mb);\n\n/* Uses a fast greedy block splitter that tries to merge current block with the\n last or the second last block and uses a static context clustering which\n is the same for all block types. */\nBROTLI_INTERNAL void BrotliBuildMetaBlockGreedy(\n MemoryManager* m, const uint8_t* ringbuffer, size_t pos, size_t mask,\n uint8_t prev_byte, uint8_t prev_byte2, ContextLut literal_context_lut,\n size_t num_contexts, const uint32_t* static_context_map,\n const Command* commands, size_t n_commands, MetaBlockSplit* mb);\n\nBROTLI_INTERNAL void BrotliOptimizeHistograms(uint32_t num_distance_codes,\n MetaBlockSplit* mb);\n\nBROTLI_INTERNAL void BrotliInitDistanceParams(BrotliDistanceParams* params,\n uint32_t npostfix, uint32_t ndirect, BROTLI_BOOL large_window);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_METABLOCK_H_ */\n" }, { "path": "c/enc/metablock_inc.h", "content": "/* NOLINT(build/header_guard) */\n/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* template parameters: FN */\n\n#define HistogramType FN(Histogram)\n\n/* Greedy block splitter for one block category (literal, command or distance).\n*/\ntypedef struct FN(BlockSplitter) {\n /* Alphabet size of particular block category. */\n size_t alphabet_size_;\n /* We collect at least this many symbols for each block. */\n size_t min_block_size_;\n /* We merge histograms A and B if\n entropy(A+B) < entropy(A) + entropy(B) + split_threshold_,\n where A is the current histogram and B is the histogram of the last or the\n second last block type. */\n double split_threshold_;\n\n size_t num_blocks_;\n BlockSplit* split_; /* not owned */\n HistogramType* histograms_; /* not owned */\n size_t* histograms_size_; /* not owned */\n\n /* Temporary storage for BlockSplitterFinishBlock. */\n HistogramType combined_histo[2];\n\n /* The number of symbols that we want to collect before deciding on whether\n or not to merge the block with a previous one or emit a new block. */\n size_t target_block_size_;\n /* The number of symbols in the current histogram. */\n size_t block_size_;\n /* Offset of the current histogram. */\n size_t curr_histogram_ix_;\n /* Offset of the histograms of the previous two block types. */\n size_t last_histogram_ix_[2];\n /* Entropy of the previous two block types. */\n double last_entropy_[2];\n /* The number of times we merged the current block with the last one. */\n size_t merge_last_count_;\n} FN(BlockSplitter);\n\nstatic void FN(InitBlockSplitter)(\n MemoryManager* m, FN(BlockSplitter)* self, size_t alphabet_size,\n size_t min_block_size, double split_threshold, size_t num_symbols,\n BlockSplit* split, HistogramType** histograms, size_t* histograms_size) {\n size_t max_num_blocks = num_symbols / min_block_size + 1;\n /* We have to allocate one more histogram than the maximum number of block\n types for the current histogram when the meta-block is too big. */\n size_t max_num_types =\n BROTLI_MIN(size_t, max_num_blocks, BROTLI_MAX_NUMBER_OF_BLOCK_TYPES + 1);\n self->alphabet_size_ = alphabet_size;\n self->min_block_size_ = min_block_size;\n self->split_threshold_ = split_threshold;\n self->num_blocks_ = 0;\n self->split_ = split;\n self->histograms_size_ = histograms_size;\n self->target_block_size_ = min_block_size;\n self->block_size_ = 0;\n self->curr_histogram_ix_ = 0;\n self->merge_last_count_ = 0;\n BROTLI_ENSURE_CAPACITY(m, uint8_t,\n split->types, split->types_alloc_size, max_num_blocks);\n BROTLI_ENSURE_CAPACITY(m, uint32_t,\n split->lengths, split->lengths_alloc_size, max_num_blocks);\n if (BROTLI_IS_OOM(m)) return;\n self->split_->num_blocks = max_num_blocks;\n BROTLI_DCHECK(*histograms == 0);\n *histograms_size = max_num_types;\n *histograms = BROTLI_ALLOC(m, HistogramType, *histograms_size);\n self->histograms_ = *histograms;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(*histograms)) return;\n /* Clear only current histogram. */\n FN(HistogramClear)(&self->histograms_[0]);\n self->last_histogram_ix_[0] = self->last_histogram_ix_[1] = 0;\n}\n\n/* Does either of three things:\n (1) emits the current block with a new block type;\n (2) emits the current block with the type of the second last block;\n (3) merges the current block with the last block. */\nstatic void FN(BlockSplitterFinishBlock)(\n FN(BlockSplitter)* self, BROTLI_BOOL is_final) {\n BlockSplit* split = self->split_;\n double* last_entropy = self->last_entropy_;\n HistogramType* histograms = self->histograms_;\n self->block_size_ =\n BROTLI_MAX(size_t, self->block_size_, self->min_block_size_);\n if (self->num_blocks_ == 0) {\n /* Create first block. */\n split->lengths[0] = (uint32_t)self->block_size_;\n split->types[0] = 0;\n last_entropy[0] =\n BrotliBitsEntropy(histograms[0].data_, self->alphabet_size_);\n last_entropy[1] = last_entropy[0];\n ++self->num_blocks_;\n ++split->num_types;\n ++self->curr_histogram_ix_;\n if (self->curr_histogram_ix_ < *self->histograms_size_)\n FN(HistogramClear)(&histograms[self->curr_histogram_ix_]);\n self->block_size_ = 0;\n } else if (self->block_size_ > 0) {\n double entropy = BrotliBitsEntropy(\n histograms[self->curr_histogram_ix_].data_, self->alphabet_size_);\n double combined_entropy[2];\n double diff[2];\n size_t j;\n for (j = 0; j < 2; ++j) {\n size_t last_histogram_ix = self->last_histogram_ix_[j];\n self->combined_histo[j] = histograms[self->curr_histogram_ix_];\n FN(HistogramAddHistogram)(&self->combined_histo[j],\n &histograms[last_histogram_ix]);\n combined_entropy[j] = BrotliBitsEntropy(\n &self->combined_histo[j].data_[0], self->alphabet_size_);\n diff[j] = combined_entropy[j] - entropy - last_entropy[j];\n }\n\n if (split->num_types < BROTLI_MAX_NUMBER_OF_BLOCK_TYPES &&\n diff[0] > self->split_threshold_ &&\n diff[1] > self->split_threshold_) {\n /* Create new block. */\n split->lengths[self->num_blocks_] = (uint32_t)self->block_size_;\n split->types[self->num_blocks_] = (uint8_t)split->num_types;\n self->last_histogram_ix_[1] = self->last_histogram_ix_[0];\n self->last_histogram_ix_[0] = (uint8_t)split->num_types;\n last_entropy[1] = last_entropy[0];\n last_entropy[0] = entropy;\n ++self->num_blocks_;\n ++split->num_types;\n ++self->curr_histogram_ix_;\n if (self->curr_histogram_ix_ < *self->histograms_size_)\n FN(HistogramClear)(&histograms[self->curr_histogram_ix_]);\n self->block_size_ = 0;\n self->merge_last_count_ = 0;\n self->target_block_size_ = self->min_block_size_;\n } else if (diff[1] < diff[0] - 20.0) {\n /* Combine this block with second last block. */\n split->lengths[self->num_blocks_] = (uint32_t)self->block_size_;\n split->types[self->num_blocks_] = split->types[self->num_blocks_ - 2];\n BROTLI_SWAP(size_t, self->last_histogram_ix_, 0, 1);\n histograms[self->last_histogram_ix_[0]] = self->combined_histo[1];\n last_entropy[1] = last_entropy[0];\n last_entropy[0] = combined_entropy[1];\n ++self->num_blocks_;\n self->block_size_ = 0;\n FN(HistogramClear)(&histograms[self->curr_histogram_ix_]);\n self->merge_last_count_ = 0;\n self->target_block_size_ = self->min_block_size_;\n } else {\n /* Combine this block with last block. */\n split->lengths[self->num_blocks_ - 1] += (uint32_t)self->block_size_;\n histograms[self->last_histogram_ix_[0]] = self->combined_histo[0];\n last_entropy[0] = combined_entropy[0];\n if (split->num_types == 1) {\n last_entropy[1] = last_entropy[0];\n }\n self->block_size_ = 0;\n FN(HistogramClear)(&histograms[self->curr_histogram_ix_]);\n if (++self->merge_last_count_ > 1) {\n self->target_block_size_ += self->min_block_size_;\n }\n }\n }\n if (is_final) {\n *self->histograms_size_ = split->num_types;\n split->num_blocks = self->num_blocks_;\n }\n}\n\n/* Adds the next symbol to the current histogram. When the current histogram\n reaches the target size, decides on merging the block. */\nstatic void FN(BlockSplitterAddSymbol)(FN(BlockSplitter)* self, size_t symbol) {\n FN(HistogramAdd)(&self->histograms_[self->curr_histogram_ix_], symbol);\n ++self->block_size_;\n if (self->block_size_ == self->target_block_size_) {\n FN(BlockSplitterFinishBlock)(self, /* is_final = */ BROTLI_FALSE);\n }\n}\n\n#undef HistogramType\n" }, { "path": "c/enc/params.h", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Parameters for the Brotli encoder with chosen quality levels. */\n\n#ifndef BROTLI_ENC_PARAMS_H_\n#define BROTLI_ENC_PARAMS_H_\n\n#include \n#include \"encoder_dict.h\"\n\ntypedef struct BrotliHasherParams {\n int type;\n int bucket_bits;\n int block_bits;\n int num_last_distances_to_check;\n} BrotliHasherParams;\n\ntypedef struct BrotliDistanceParams {\n uint32_t distance_postfix_bits;\n uint32_t num_direct_distance_codes;\n uint32_t alphabet_size_max;\n uint32_t alphabet_size_limit;\n size_t max_distance;\n} BrotliDistanceParams;\n\n/* Encoding parameters */\ntypedef struct BrotliEncoderParams {\n BrotliEncoderMode mode;\n int quality;\n int lgwin;\n int lgblock;\n size_t stream_offset;\n size_t size_hint;\n BROTLI_BOOL disable_literal_context_modeling;\n BROTLI_BOOL large_window;\n BrotliHasherParams hasher;\n BrotliDistanceParams dist;\n /* TODO(eustas): rename to BrotliShared... */\n SharedEncoderDictionary dictionary;\n} BrotliEncoderParams;\n\n#endif /* BROTLI_ENC_PARAMS_H_ */\n" }, { "path": "c/enc/prefix.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Functions for encoding of integers into prefix codes the amount of extra\n bits, and the actual values of the extra bits. */\n\n#ifndef BROTLI_ENC_PREFIX_H_\n#define BROTLI_ENC_PREFIX_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"fast_log.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* Here distance_code is an intermediate code, i.e. one of the special codes or\n the actual distance increased by BROTLI_NUM_DISTANCE_SHORT_CODES - 1. */\nstatic BROTLI_INLINE void PrefixEncodeCopyDistance(size_t distance_code,\n size_t num_direct_codes,\n size_t postfix_bits,\n uint16_t* code,\n uint32_t* extra_bits) {\n if (distance_code < BROTLI_NUM_DISTANCE_SHORT_CODES + num_direct_codes) {\n *code = (uint16_t)distance_code;\n *extra_bits = 0;\n return;\n } else {\n size_t dist = ((size_t)1 << (postfix_bits + 2u)) +\n (distance_code - BROTLI_NUM_DISTANCE_SHORT_CODES - num_direct_codes);\n size_t bucket = Log2FloorNonZero(dist) - 1;\n size_t postfix_mask = (1u << postfix_bits) - 1;\n size_t postfix = dist & postfix_mask;\n size_t prefix = (dist >> bucket) & 1;\n size_t offset = (2 + prefix) << bucket;\n size_t nbits = bucket - postfix_bits;\n *code = (uint16_t)((nbits << 10) |\n (BROTLI_NUM_DISTANCE_SHORT_CODES + num_direct_codes +\n ((2 * (nbits - 1) + prefix) << postfix_bits) + postfix));\n *extra_bits = (uint32_t)((dist - offset) >> postfix_bits);\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_PREFIX_H_ */\n" }, { "path": "c/enc/quality.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Constants and formulas that affect speed-ratio trade-offs and thus define\n quality levels. */\n\n#ifndef BROTLI_ENC_QUALITY_H_\n#define BROTLI_ENC_QUALITY_H_\n\n#include \"../common/platform.h\"\n#include \n#include \"params.h\"\n\n#define FAST_ONE_PASS_COMPRESSION_QUALITY 0\n#define FAST_TWO_PASS_COMPRESSION_QUALITY 1\n#define ZOPFLIFICATION_QUALITY 10\n#define HQ_ZOPFLIFICATION_QUALITY 11\n\n#define MAX_QUALITY_FOR_STATIC_ENTROPY_CODES 2\n#define MIN_QUALITY_FOR_BLOCK_SPLIT 4\n#define MIN_QUALITY_FOR_NONZERO_DISTANCE_PARAMS 4\n#define MIN_QUALITY_FOR_OPTIMIZE_HISTOGRAMS 4\n#define MIN_QUALITY_FOR_EXTENSIVE_REFERENCE_SEARCH 5\n#define MIN_QUALITY_FOR_CONTEXT_MODELING 5\n#define MIN_QUALITY_FOR_HQ_CONTEXT_MODELING 7\n#define MIN_QUALITY_FOR_HQ_BLOCK_SPLITTING 10\n\n/* For quality below MIN_QUALITY_FOR_BLOCK_SPLIT there is no block splitting,\n so we buffer at most this much literals and commands. */\n#define MAX_NUM_DELAYED_SYMBOLS 0x2FFF\n\n/* Returns hash-table size for quality levels 0 and 1. */\nstatic BROTLI_INLINE size_t MaxHashTableSize(int quality) {\n return quality == FAST_ONE_PASS_COMPRESSION_QUALITY ? 1 << 15 : 1 << 17;\n}\n\n/* The maximum length for which the zopflification uses distinct distances. */\n#define MAX_ZOPFLI_LEN_QUALITY_10 150\n#define MAX_ZOPFLI_LEN_QUALITY_11 325\n\n/* Do not thoroughly search when a long copy is found. */\n#define BROTLI_LONG_COPY_QUICK_STEP 16384\n\nstatic BROTLI_INLINE size_t MaxZopfliLen(const BrotliEncoderParams* params) {\n return params->quality <= 10 ?\n MAX_ZOPFLI_LEN_QUALITY_10 :\n MAX_ZOPFLI_LEN_QUALITY_11;\n}\n\n/* Number of best candidates to evaluate to expand Zopfli chain. */\nstatic BROTLI_INLINE size_t MaxZopfliCandidates(\n const BrotliEncoderParams* params) {\n return params->quality <= 10 ? 1 : 5;\n}\n\nstatic BROTLI_INLINE void SanitizeParams(BrotliEncoderParams* params) {\n params->quality = BROTLI_MIN(int, BROTLI_MAX_QUALITY,\n BROTLI_MAX(int, BROTLI_MIN_QUALITY, params->quality));\n if (params->quality <= MAX_QUALITY_FOR_STATIC_ENTROPY_CODES) {\n params->large_window = BROTLI_FALSE;\n }\n if (params->lgwin < BROTLI_MIN_WINDOW_BITS) {\n params->lgwin = BROTLI_MIN_WINDOW_BITS;\n } else {\n int max_lgwin = params->large_window ? BROTLI_LARGE_MAX_WINDOW_BITS :\n BROTLI_MAX_WINDOW_BITS;\n if (params->lgwin > max_lgwin) params->lgwin = max_lgwin;\n }\n}\n\n/* Returns optimized lg_block value. */\nstatic BROTLI_INLINE int ComputeLgBlock(const BrotliEncoderParams* params) {\n int lgblock = params->lgblock;\n if (params->quality == FAST_ONE_PASS_COMPRESSION_QUALITY ||\n params->quality == FAST_TWO_PASS_COMPRESSION_QUALITY) {\n lgblock = params->lgwin;\n } else if (params->quality < MIN_QUALITY_FOR_BLOCK_SPLIT) {\n lgblock = 14;\n } else if (lgblock == 0) {\n lgblock = 16;\n if (params->quality >= 9 && params->lgwin > lgblock) {\n lgblock = BROTLI_MIN(int, 18, params->lgwin);\n }\n } else {\n lgblock = BROTLI_MIN(int, BROTLI_MAX_INPUT_BLOCK_BITS,\n BROTLI_MAX(int, BROTLI_MIN_INPUT_BLOCK_BITS, lgblock));\n }\n return lgblock;\n}\n\n/* Returns log2 of the size of main ring buffer area.\n Allocate at least lgwin + 1 bits for the ring buffer so that the newly\n added block fits there completely and we still get lgwin bits and at least\n read_block_size_bits + 1 bits because the copy tail length needs to be\n smaller than ring-buffer size. */\nstatic BROTLI_INLINE int ComputeRbBits(const BrotliEncoderParams* params) {\n return 1 + BROTLI_MAX(int, params->lgwin, params->lgblock);\n}\n\nstatic BROTLI_INLINE size_t MaxMetablockSize(\n const BrotliEncoderParams* params) {\n int bits =\n BROTLI_MIN(int, ComputeRbBits(params), BROTLI_MAX_INPUT_BLOCK_BITS);\n return (size_t)1 << bits;\n}\n\n/* When searching for backward references and have not seen matches for a long\n time, we can skip some match lookups. Unsuccessful match lookups are very\n expensive and this kind of a heuristic speeds up compression quite a lot.\n At first 8 byte strides are taken and every second byte is put to hasher.\n After 4x more literals stride by 16 bytes, every put 4-th byte to hasher.\n Applied only to qualities 2 to 9. */\nstatic BROTLI_INLINE size_t LiteralSpreeLengthForSparseSearch(\n const BrotliEncoderParams* params) {\n return params->quality < 9 ? 64 : 512;\n}\n\n/* Quality to hasher mapping:\n\n - q02: h02 (longest_match_quickly), b16, l5\n\n - q03: h03 (longest_match_quickly), b17, l5\n\n - q04: h04 (longest_match_quickly), b17, l5\n - q04: h54 (longest_match_quickly), b20, l7 | for large files\n\n - q05: h58 (longest_match_simd ), b14, l4\n - q05: h68 (longest_match64_simd ), b15, l5 | for large files\n - q05: h40 (forgetful_chain ), b15, l4 | for small window\n\n - q06: h58 (longest_match_simd ), b14, l4\n - q06: h68 (longest_match64_simd ), b15, l5 | for large files\n - q06: h40 (forgetful_chain ), b15, l4 | for small window\n\n - q07: h58 (longest_match_simd ), b15, l4\n - q07: h68 (longest_match64_simd ), b15, l5 | for large files\n - q07: h41 (forgetful_chain ), b15, l4 | for small window\n\n - q08: h05 (longest_match ), b15, l4\n - q08: h06 (longest_match64 ), b15, l5 | for large files\n - q08: h41 (forgetful_chain ), b15, l4 | for small window\n\n - q09: h05 (longest_match ), b15, l4\n - q09: h06 (longest_match64 ), b15, l5 | for large files\n - q09: h42 (forgetful_chain ), b15, l4 | for small window\n\n - q10: t10 (to_binary_tree ), b17, l128\n\n - q11: t10 (to_binary_tree ), b17, l128\n\n Where \"q\" is quality, \"h\" is hasher type, \"b\" is bucket bits,\n \"l\" is source len. */\nstatic BROTLI_INLINE void ChooseHasher(const BrotliEncoderParams* params,\n BrotliHasherParams* hparams) {\n if (params->quality > 9) {\n hparams->type = 10;\n } else if (params->quality == 4 && params->size_hint >= (1 << 20)) {\n hparams->type = 54;\n } else if (params->quality < 5) {\n hparams->type = params->quality;\n } else if (params->lgwin <= 16) {\n hparams->type = params->quality < 7 ? 40 : params->quality < 9 ? 41 : 42;\n } else if (params->size_hint >= (1 << 20) && params->lgwin >= 19) {\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n hparams->type = params->quality <= BROTLI_MAX_SIMD_QUALITY ? 68 : 6;\n#else\n hparams->type = 6;\n#endif\n hparams->block_bits = params->quality - 1;\n hparams->bucket_bits = 15;\n hparams->num_last_distances_to_check =\n params->quality < 7 ? 4 : params->quality < 9 ? 10 : 16;\n } else {\n /* TODO(eustas): often previous setting (H6) is faster and denser; consider\n adding an option to use it. */\n#if defined(BROTLI_MAX_SIMD_QUALITY)\n hparams->type = params->quality <= BROTLI_MAX_SIMD_QUALITY ? 58 : 5;\n#else\n hparams->type = 5;\n#endif\n hparams->block_bits = params->quality - 1;\n hparams->bucket_bits = params->quality < 7 ? 14 : 15;\n hparams->num_last_distances_to_check =\n params->quality < 7 ? 4 : params->quality < 9 ? 10 : 16;\n }\n\n if (params->lgwin > 24) {\n /* Different hashers for large window brotli: not for qualities <= 2,\n these are too fast for large window. Not for qualities >= 10: their\n hasher already works well with large window. So the changes are:\n H3 --> H35: for quality 3.\n H54 --> H55: for quality 4 with size hint > 1MB\n H6/H68 --> H65: for qualities 5, 6, 7, 8, 9. */\n if (hparams->type == 3) {\n hparams->type = 35;\n }\n if (hparams->type == 54) {\n hparams->type = 55;\n }\n if (hparams->type == 6 || hparams->type == 68) {\n hparams->type = 65;\n }\n }\n}\n\n#endif /* BROTLI_ENC_QUALITY_H_ */\n" }, { "path": "c/enc/ringbuffer.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Sliding window over the input data. */\n\n#ifndef BROTLI_ENC_RINGBUFFER_H_\n#define BROTLI_ENC_RINGBUFFER_H_\n\n#include \"../common/platform.h\"\n#include \"memory.h\"\n#include \"params.h\"\n#include \"quality.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* A RingBuffer(window_bits, tail_bits) contains `1 << window_bits' bytes of\n data in a circular manner: writing a byte writes it to:\n `position() % (1 << window_bits)'.\n For convenience, the RingBuffer array contains another copy of the\n first `1 << tail_bits' bytes:\n buffer_[i] == buffer_[i + (1 << window_bits)], if i < (1 << tail_bits),\n and another copy of the last two bytes:\n buffer_[-1] == buffer_[(1 << window_bits) - 1] and\n buffer_[-2] == buffer_[(1 << window_bits) - 2]. */\ntypedef struct RingBuffer {\n /* Size of the ring-buffer is (1 << window_bits) + tail_size_. */\n const uint32_t size_;\n const uint32_t mask_;\n const uint32_t tail_size_;\n const uint32_t total_size_;\n\n uint32_t cur_size_;\n /* Position to write in the ring buffer. */\n uint32_t pos_;\n /* The actual ring buffer containing the copy of the last two bytes, the data,\n and the copy of the beginning as a tail. */\n uint8_t* data_;\n /* The start of the ring-buffer. */\n uint8_t* buffer_;\n} RingBuffer;\n\nstatic BROTLI_INLINE void RingBufferInit(RingBuffer* rb) {\n rb->cur_size_ = 0;\n rb->pos_ = 0;\n rb->data_ = 0;\n rb->buffer_ = 0;\n}\n\nstatic BROTLI_INLINE void RingBufferSetup(\n const BrotliEncoderParams* params, RingBuffer* rb) {\n int window_bits = ComputeRbBits(params);\n int tail_bits = params->lgblock;\n *(uint32_t*)&rb->size_ = 1u << window_bits;\n *(uint32_t*)&rb->mask_ = (1u << window_bits) - 1;\n *(uint32_t*)&rb->tail_size_ = 1u << tail_bits;\n *(uint32_t*)&rb->total_size_ = rb->size_ + rb->tail_size_;\n}\n\nstatic BROTLI_INLINE void RingBufferFree(MemoryManager* m, RingBuffer* rb) {\n BROTLI_FREE(m, rb->data_);\n}\n\n/* Allocates or re-allocates data_ to the given length + plus some slack\n region before and after. Fills the slack regions with zeros. */\nstatic BROTLI_INLINE void RingBufferInitBuffer(\n MemoryManager* m, const uint32_t buflen, RingBuffer* rb) {\n static const size_t kSlackForEightByteHashingEverywhere = 7;\n uint8_t* new_data = BROTLI_ALLOC(\n m, uint8_t, 2 + buflen + kSlackForEightByteHashingEverywhere);\n size_t i;\n if (BROTLI_IS_OOM(m) || BROTLI_IS_NULL(new_data)) return;\n if (rb->data_) {\n memcpy(new_data, rb->data_,\n 2 + rb->cur_size_ + kSlackForEightByteHashingEverywhere);\n BROTLI_FREE(m, rb->data_);\n }\n rb->data_ = new_data;\n rb->cur_size_ = buflen;\n rb->buffer_ = rb->data_ + 2;\n rb->buffer_[-2] = rb->buffer_[-1] = 0;\n for (i = 0; i < kSlackForEightByteHashingEverywhere; ++i) {\n rb->buffer_[rb->cur_size_ + i] = 0;\n }\n}\n\nstatic BROTLI_INLINE void RingBufferWriteTail(\n const uint8_t* bytes, size_t n, RingBuffer* rb) {\n const size_t masked_pos = rb->pos_ & rb->mask_;\n if (BROTLI_PREDICT_FALSE(masked_pos < rb->tail_size_)) {\n /* Just fill the tail buffer with the beginning data. */\n const size_t p = rb->size_ + masked_pos;\n memcpy(&rb->buffer_[p], bytes,\n BROTLI_MIN(size_t, n, rb->tail_size_ - masked_pos));\n }\n}\n\n/* Push bytes into the ring buffer. */\nstatic BROTLI_INLINE void RingBufferWrite(\n MemoryManager* m, const uint8_t* bytes, size_t n, RingBuffer* rb) {\n if (rb->pos_ == 0 && n < rb->tail_size_) {\n /* Special case for the first write: to process the first block, we don't\n need to allocate the whole ring-buffer and we don't need the tail\n either. However, we do this memory usage optimization only if the\n first write is less than the tail size, which is also the input block\n size, otherwise it is likely that other blocks will follow and we\n will need to reallocate to the full size anyway. */\n rb->pos_ = (uint32_t)n;\n RingBufferInitBuffer(m, rb->pos_, rb);\n if (BROTLI_IS_OOM(m)) return;\n memcpy(rb->buffer_, bytes, n);\n return;\n }\n if (rb->cur_size_ < rb->total_size_) {\n /* Lazily allocate the full buffer. */\n RingBufferInitBuffer(m, rb->total_size_, rb);\n if (BROTLI_IS_OOM(m)) return;\n /* Initialize the last two bytes to zero, so that we don't have to worry\n later when we copy the last two bytes to the first two positions. */\n rb->buffer_[rb->size_ - 2] = 0;\n rb->buffer_[rb->size_ - 1] = 0;\n /* Initialize tail; might be touched by \"best_len++\" optimization when\n ring buffer is \"full\". */\n rb->buffer_[rb->size_] = 241;\n }\n {\n const size_t masked_pos = rb->pos_ & rb->mask_;\n /* The length of the writes is limited so that we do not need to worry\n about a write */\n RingBufferWriteTail(bytes, n, rb);\n if (BROTLI_PREDICT_TRUE(masked_pos + n <= rb->size_)) {\n /* A single write fits. */\n memcpy(&rb->buffer_[masked_pos], bytes, n);\n } else {\n /* Split into two writes.\n Copy into the end of the buffer, including the tail buffer. */\n memcpy(&rb->buffer_[masked_pos], bytes,\n BROTLI_MIN(size_t, n, rb->total_size_ - masked_pos));\n /* Copy into the beginning of the buffer */\n memcpy(&rb->buffer_[0], bytes + (rb->size_ - masked_pos),\n n - (rb->size_ - masked_pos));\n }\n }\n {\n BROTLI_BOOL not_first_lap = (rb->pos_ & (1u << 31)) != 0;\n uint32_t rb_pos_mask = (1u << 31) - 1;\n rb->buffer_[-2] = rb->buffer_[rb->size_ - 2];\n rb->buffer_[-1] = rb->buffer_[rb->size_ - 1];\n rb->pos_ = (rb->pos_ & rb_pos_mask) + (uint32_t)(n & rb_pos_mask);\n if (not_first_lap) {\n /* Wrap, but preserve not-a-first-lap feature. */\n rb->pos_ |= 1u << 31;\n }\n }\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_RINGBUFFER_H_ */\n" }, { "path": "c/enc/state.h", "content": "/* Copyright 2022 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Encoder state. */\n\n#ifndef BROTLI_ENC_STATE_H_\n#define BROTLI_ENC_STATE_H_\n\n#include \"../common/constants.h\"\n#include \"../common/platform.h\"\n#include \"command.h\"\n#include \"compress_fragment.h\"\n#include \"compress_fragment_two_pass.h\"\n#include \"hash.h\"\n#include \"memory.h\"\n#include \"params.h\"\n#include \"ringbuffer.h\"\n\ntypedef enum BrotliEncoderStreamState {\n /* Default state. */\n BROTLI_STREAM_PROCESSING = 0,\n /* Intermediate state; after next block is emitted, byte-padding should be\n performed before getting back to default state. */\n BROTLI_STREAM_FLUSH_REQUESTED = 1,\n /* Last metablock was produced; no more input is acceptable. */\n BROTLI_STREAM_FINISHED = 2,\n /* Flushing compressed block and writing meta-data block header. */\n BROTLI_STREAM_METADATA_HEAD = 3,\n /* Writing metadata block body. */\n BROTLI_STREAM_METADATA_BODY = 4\n} BrotliEncoderStreamState;\n\ntypedef enum BrotliEncoderFlintState {\n BROTLI_FLINT_NEEDS_2_BYTES = 2,\n BROTLI_FLINT_NEEDS_1_BYTE = 1,\n BROTLI_FLINT_WAITING_FOR_PROCESSING = 0,\n BROTLI_FLINT_WAITING_FOR_FLUSHING = -1,\n BROTLI_FLINT_DONE = -2\n} BrotliEncoderFlintState;\n\ntypedef struct BrotliEncoderStateStruct {\n BrotliEncoderParams params;\n\n MemoryManager memory_manager_;\n\n uint64_t input_pos_;\n RingBuffer ringbuffer_;\n size_t cmd_alloc_size_;\n Command* commands_;\n size_t num_commands_;\n size_t num_literals_;\n size_t last_insert_len_;\n uint64_t last_flush_pos_;\n uint64_t last_processed_pos_;\n int dist_cache_[BROTLI_NUM_DISTANCE_SHORT_CODES];\n int saved_dist_cache_[4];\n uint16_t last_bytes_;\n uint8_t last_bytes_bits_;\n /* \"Flint\" is a tiny uncompressed block emitted before the continuation\n block to unwire literal context from previous data. Despite being int8_t,\n field is actually BrotliEncoderFlintState enum. */\n int8_t flint_;\n uint8_t prev_byte_;\n uint8_t prev_byte2_;\n size_t storage_size_;\n uint8_t* storage_;\n\n Hasher hasher_;\n\n /* Hash table for FAST_ONE_PASS_COMPRESSION_QUALITY mode. */\n int small_table_[1 << 10]; /* 4KiB */\n int* large_table_; /* Allocated only when needed */\n size_t large_table_size_;\n\n BrotliOnePassArena* one_pass_arena_;\n BrotliTwoPassArena* two_pass_arena_;\n\n /* Command and literal buffers for FAST_TWO_PASS_COMPRESSION_QUALITY. */\n uint32_t* command_buf_;\n uint8_t* literal_buf_;\n\n uint64_t total_in_;\n uint8_t* next_out_;\n size_t available_out_;\n uint64_t total_out_;\n /* Temporary buffer for padding flush bits or metadata block header / body. */\n union {\n uint64_t u64[2];\n uint8_t u8[16];\n } tiny_buf_;\n uint32_t remaining_metadata_bytes_;\n BrotliEncoderStreamState stream_state_;\n\n BROTLI_BOOL is_last_block_emitted_;\n BROTLI_BOOL is_initialized_;\n} BrotliEncoderStateStruct;\n\ntypedef struct BrotliEncoderStateStruct BrotliEncoderStateInternal;\n#define BrotliEncoderState BrotliEncoderStateInternal\n\n#endif // BROTLI_ENC_STATE_H_\n" }, { "path": "c/enc/static_dict.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"static_dict.h\"\n\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \"../common/transform.h\"\n#include \"encoder_dict.h\"\n#include \"find_match_length.h\"\n#include \"hash_base.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic BROTLI_INLINE void AddMatch(size_t distance, size_t len, size_t len_code,\n uint32_t* matches) {\n uint32_t match = (uint32_t)((distance << 5) + len_code);\n matches[len] = BROTLI_MIN(uint32_t, matches[len], match);\n}\n\nstatic BROTLI_INLINE size_t DictMatchLength(const BrotliDictionary* dictionary,\n const uint8_t* data,\n size_t id,\n size_t len,\n size_t maxlen) {\n const size_t offset = dictionary->offsets_by_length[len] + len * id;\n return FindMatchLengthWithLimit(&dictionary->data[offset], data,\n BROTLI_MIN(size_t, len, maxlen));\n}\n\nstatic BROTLI_INLINE BROTLI_BOOL IsMatch(const BrotliDictionary* dictionary,\n DictWord w, const uint8_t* data, size_t max_length) {\n if (w.len > max_length) {\n return BROTLI_FALSE;\n } else {\n const size_t offset = dictionary->offsets_by_length[w.len] +\n (size_t)w.len * (size_t)w.idx;\n const uint8_t* dict = &dictionary->data[offset];\n if (w.transform == 0) {\n /* Match against base dictionary word. */\n return\n TO_BROTLI_BOOL(FindMatchLengthWithLimit(dict, data, w.len) == w.len);\n } else if (w.transform == 10) {\n /* Match against uppercase first transform.\n Note that there are only ASCII uppercase words in the lookup table. */\n return TO_BROTLI_BOOL(dict[0] >= 'a' && dict[0] <= 'z' &&\n (dict[0] ^ 32) == data[0] &&\n FindMatchLengthWithLimit(&dict[1], &data[1], w.len - 1u) ==\n w.len - 1u);\n } else {\n /* Match against uppercase all transform.\n Note that there are only ASCII uppercase words in the lookup table. */\n size_t i;\n for (i = 0; i < w.len; ++i) {\n if (dict[i] >= 'a' && dict[i] <= 'z') {\n if ((dict[i] ^ 32) != data[i]) return BROTLI_FALSE;\n } else {\n if (dict[i] != data[i]) return BROTLI_FALSE;\n }\n }\n return BROTLI_TRUE;\n }\n }\n}\n\n/* Finds matches for a single static dictionary */\nstatic BROTLI_BOOL BrotliFindAllStaticDictionaryMatchesFor(\n const BrotliEncoderDictionary* dictionary, const uint8_t* data,\n size_t min_length, size_t max_length, uint32_t* matches) {\n BROTLI_BOOL has_found_match = BROTLI_FALSE;\n#if defined(BROTLI_EXPERIMENTAL)\n if (dictionary->has_words_heavy) {\n const BrotliTrieNode* node = &dictionary->trie.root;\n size_t l = 0;\n while (node && l < max_length) {\n uint8_t c;\n if (l >= min_length && node->len_) {\n AddMatch(node->idx_, l, node->len_, matches);\n has_found_match = BROTLI_TRUE;\n }\n c = data[l++];\n node = BrotliTrieSub(&dictionary->trie, node, c);\n }\n return has_found_match;\n }\n#endif /* BROTLI_EXPERIMENTAL */\n {\n size_t offset = dictionary->buckets[Hash15(data)];\n BROTLI_BOOL end = !offset;\n while (!end) {\n DictWord w = dictionary->dict_words[offset++];\n const size_t l = w.len & 0x1F;\n const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];\n const size_t id = w.idx;\n end = !!(w.len & 0x80);\n w.len = (uint8_t)l;\n if (w.transform == 0) {\n const size_t matchlen =\n DictMatchLength(dictionary->words, data, id, l, max_length);\n const uint8_t* s;\n size_t minlen;\n size_t maxlen;\n size_t len;\n /* Transform \"\" + BROTLI_TRANSFORM_IDENTITY + \"\" */\n if (matchlen == l) {\n AddMatch(id, l, l, matches);\n has_found_match = BROTLI_TRUE;\n }\n /* Transforms \"\" + BROTLI_TRANSFORM_OMIT_LAST_1 + \"\" and\n \"\" + BROTLI_TRANSFORM_OMIT_LAST_1 + \"ing \" */\n if (matchlen >= l - 1) {\n AddMatch(id + 12 * n, l - 1, l, matches);\n if (l + 2 < max_length &&\n data[l - 1] == 'i' && data[l] == 'n' && data[l + 1] == 'g' &&\n data[l + 2] == ' ') {\n AddMatch(id + 49 * n, l + 3, l, matches);\n }\n has_found_match = BROTLI_TRUE;\n }\n /* Transform \"\" + BROTLI_TRANSFORM_OMIT_LAST_# + \"\" (# = 2 .. 9) */\n minlen = min_length;\n if (l > 9) minlen = BROTLI_MAX(size_t, minlen, l - 9);\n maxlen = BROTLI_MIN(size_t, matchlen, l - 2);\n for (len = minlen; len <= maxlen; ++len) {\n size_t cut = l - len;\n size_t transform_id = (cut << 2) +\n (size_t)((dictionary->cutoffTransforms >> (cut * 6)) & 0x3F);\n AddMatch(id + transform_id * n, len, l, matches);\n has_found_match = BROTLI_TRUE;\n }\n if (matchlen < l || l + 6 >= max_length) {\n continue;\n }\n s = &data[l];\n /* Transforms \"\" + BROTLI_TRANSFORM_IDENTITY + */\n if (s[0] == ' ') {\n AddMatch(id + n, l + 1, l, matches);\n if (s[1] == 'a') {\n if (s[2] == ' ') {\n AddMatch(id + 28 * n, l + 3, l, matches);\n } else if (s[2] == 's') {\n if (s[3] == ' ') AddMatch(id + 46 * n, l + 4, l, matches);\n } else if (s[2] == 't') {\n if (s[3] == ' ') AddMatch(id + 60 * n, l + 4, l, matches);\n } else if (s[2] == 'n') {\n if (s[3] == 'd' && s[4] == ' ') {\n AddMatch(id + 10 * n, l + 5, l, matches);\n }\n }\n } else if (s[1] == 'b') {\n if (s[2] == 'y' && s[3] == ' ') {\n AddMatch(id + 38 * n, l + 4, l, matches);\n }\n } else if (s[1] == 'i') {\n if (s[2] == 'n') {\n if (s[3] == ' ') AddMatch(id + 16 * n, l + 4, l, matches);\n } else if (s[2] == 's') {\n if (s[3] == ' ') AddMatch(id + 47 * n, l + 4, l, matches);\n }\n } else if (s[1] == 'f') {\n if (s[2] == 'o') {\n if (s[3] == 'r' && s[4] == ' ') {\n AddMatch(id + 25 * n, l + 5, l, matches);\n }\n } else if (s[2] == 'r') {\n if (s[3] == 'o' && s[4] == 'm' && s[5] == ' ') {\n AddMatch(id + 37 * n, l + 6, l, matches);\n }\n }\n } else if (s[1] == 'o') {\n if (s[2] == 'f') {\n if (s[3] == ' ') AddMatch(id + 8 * n, l + 4, l, matches);\n } else if (s[2] == 'n') {\n if (s[3] == ' ') AddMatch(id + 45 * n, l + 4, l, matches);\n }\n } else if (s[1] == 'n') {\n if (s[2] == 'o' && s[3] == 't' && s[4] == ' ') {\n AddMatch(id + 80 * n, l + 5, l, matches);\n }\n } else if (s[1] == 't') {\n if (s[2] == 'h') {\n if (s[3] == 'e') {\n if (s[4] == ' ') AddMatch(id + 5 * n, l + 5, l, matches);\n } else if (s[3] == 'a') {\n if (s[4] == 't' && s[5] == ' ') {\n AddMatch(id + 29 * n, l + 6, l, matches);\n }\n }\n } else if (s[2] == 'o') {\n if (s[3] == ' ') AddMatch(id + 17 * n, l + 4, l, matches);\n }\n } else if (s[1] == 'w') {\n if (s[2] == 'i' && s[3] == 't' && s[4] == 'h' && s[5] == ' ') {\n AddMatch(id + 35 * n, l + 6, l, matches);\n }\n }\n } else if (s[0] == '\"') {\n AddMatch(id + 19 * n, l + 1, l, matches);\n if (s[1] == '>') {\n AddMatch(id + 21 * n, l + 2, l, matches);\n }\n } else if (s[0] == '.') {\n AddMatch(id + 20 * n, l + 1, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + 31 * n, l + 2, l, matches);\n if (s[2] == 'T' && s[3] == 'h') {\n if (s[4] == 'e') {\n if (s[5] == ' ') AddMatch(id + 43 * n, l + 6, l, matches);\n } else if (s[4] == 'i') {\n if (s[5] == 's' && s[6] == ' ') {\n AddMatch(id + 75 * n, l + 7, l, matches);\n }\n }\n }\n }\n } else if (s[0] == ',') {\n AddMatch(id + 76 * n, l + 1, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + 14 * n, l + 2, l, matches);\n }\n } else if (s[0] == '\\n') {\n AddMatch(id + 22 * n, l + 1, l, matches);\n if (s[1] == '\\t') {\n AddMatch(id + 50 * n, l + 2, l, matches);\n }\n } else if (s[0] == ']') {\n AddMatch(id + 24 * n, l + 1, l, matches);\n } else if (s[0] == '\\'') {\n AddMatch(id + 36 * n, l + 1, l, matches);\n } else if (s[0] == ':') {\n AddMatch(id + 51 * n, l + 1, l, matches);\n } else if (s[0] == '(') {\n AddMatch(id + 57 * n, l + 1, l, matches);\n } else if (s[0] == '=') {\n if (s[1] == '\"') {\n AddMatch(id + 70 * n, l + 2, l, matches);\n } else if (s[1] == '\\'') {\n AddMatch(id + 86 * n, l + 2, l, matches);\n }\n } else if (s[0] == 'a') {\n if (s[1] == 'l' && s[2] == ' ') {\n AddMatch(id + 84 * n, l + 3, l, matches);\n }\n } else if (s[0] == 'e') {\n if (s[1] == 'd') {\n if (s[2] == ' ') AddMatch(id + 53 * n, l + 3, l, matches);\n } else if (s[1] == 'r') {\n if (s[2] == ' ') AddMatch(id + 82 * n, l + 3, l, matches);\n } else if (s[1] == 's') {\n if (s[2] == 't' && s[3] == ' ') {\n AddMatch(id + 95 * n, l + 4, l, matches);\n }\n }\n } else if (s[0] == 'f') {\n if (s[1] == 'u' && s[2] == 'l' && s[3] == ' ') {\n AddMatch(id + 90 * n, l + 4, l, matches);\n }\n } else if (s[0] == 'i') {\n if (s[1] == 'v') {\n if (s[2] == 'e' && s[3] == ' ') {\n AddMatch(id + 92 * n, l + 4, l, matches);\n }\n } else if (s[1] == 'z') {\n if (s[2] == 'e' && s[3] == ' ') {\n AddMatch(id + 100 * n, l + 4, l, matches);\n }\n }\n } else if (s[0] == 'l') {\n if (s[1] == 'e') {\n if (s[2] == 's' && s[3] == 's' && s[4] == ' ') {\n AddMatch(id + 93 * n, l + 5, l, matches);\n }\n } else if (s[1] == 'y') {\n if (s[2] == ' ') AddMatch(id + 61 * n, l + 3, l, matches);\n }\n } else if (s[0] == 'o') {\n if (s[1] == 'u' && s[2] == 's' && s[3] == ' ') {\n AddMatch(id + 106 * n, l + 4, l, matches);\n }\n }\n } else {\n /* Set is_all_caps=0 for BROTLI_TRANSFORM_UPPERCASE_FIRST and\n is_all_caps=1 otherwise (BROTLI_TRANSFORM_UPPERCASE_ALL)\n transform. */\n const BROTLI_BOOL is_all_caps =\n TO_BROTLI_BOOL(w.transform != BROTLI_TRANSFORM_UPPERCASE_FIRST);\n const uint8_t* s;\n if (!IsMatch(dictionary->words, w, data, max_length)) {\n continue;\n }\n /* Transform \"\" + kUppercase{First,All} + \"\" */\n AddMatch(id + (is_all_caps ? 44 : 9) * n, l, l, matches);\n has_found_match = BROTLI_TRUE;\n if (l + 1 >= max_length) {\n continue;\n }\n /* Transforms \"\" + kUppercase{First,All} + */\n s = &data[l];\n if (s[0] == ' ') {\n AddMatch(id + (is_all_caps ? 68 : 4) * n, l + 1, l, matches);\n } else if (s[0] == '\"') {\n AddMatch(id + (is_all_caps ? 87 : 66) * n, l + 1, l, matches);\n if (s[1] == '>') {\n AddMatch(id + (is_all_caps ? 97 : 69) * n, l + 2, l, matches);\n }\n } else if (s[0] == '.') {\n AddMatch(id + (is_all_caps ? 101 : 79) * n, l + 1, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + (is_all_caps ? 114 : 88) * n, l + 2, l, matches);\n }\n } else if (s[0] == ',') {\n AddMatch(id + (is_all_caps ? 112 : 99) * n, l + 1, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + (is_all_caps ? 107 : 58) * n, l + 2, l, matches);\n }\n } else if (s[0] == '\\'') {\n AddMatch(id + (is_all_caps ? 94 : 74) * n, l + 1, l, matches);\n } else if (s[0] == '(') {\n AddMatch(id + (is_all_caps ? 113 : 78) * n, l + 1, l, matches);\n } else if (s[0] == '=') {\n if (s[1] == '\"') {\n AddMatch(id + (is_all_caps ? 105 : 104) * n, l + 2, l, matches);\n } else if (s[1] == '\\'') {\n AddMatch(id + (is_all_caps ? 116 : 108) * n, l + 2, l, matches);\n }\n }\n }\n }\n }\n /* Transforms with prefixes \" \" and \".\" */\n if (max_length >= 5 && (data[0] == ' ' || data[0] == '.')) {\n BROTLI_BOOL is_space = TO_BROTLI_BOOL(data[0] == ' ');\n size_t offset = dictionary->buckets[Hash15(&data[1])];\n BROTLI_BOOL end = !offset;\n while (!end) {\n DictWord w = dictionary->dict_words[offset++];\n const size_t l = w.len & 0x1F;\n const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];\n const size_t id = w.idx;\n end = !!(w.len & 0x80);\n w.len = (uint8_t)l;\n if (w.transform == 0) {\n const uint8_t* s;\n if (!IsMatch(dictionary->words, w, &data[1], max_length - 1)) {\n continue;\n }\n /* Transforms \" \" + BROTLI_TRANSFORM_IDENTITY + \"\" and\n \".\" + BROTLI_TRANSFORM_IDENTITY + \"\" */\n AddMatch(id + (is_space ? 6 : 32) * n, l + 1, l, matches);\n has_found_match = BROTLI_TRUE;\n if (l + 2 >= max_length) {\n continue;\n }\n /* Transforms \" \" + BROTLI_TRANSFORM_IDENTITY + and\n \".\" + BROTLI_TRANSFORM_IDENTITY + \n */\n s = &data[l + 1];\n if (s[0] == ' ') {\n AddMatch(id + (is_space ? 2 : 77) * n, l + 2, l, matches);\n } else if (s[0] == '(') {\n AddMatch(id + (is_space ? 89 : 67) * n, l + 2, l, matches);\n } else if (is_space) {\n if (s[0] == ',') {\n AddMatch(id + 103 * n, l + 2, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + 33 * n, l + 3, l, matches);\n }\n } else if (s[0] == '.') {\n AddMatch(id + 71 * n, l + 2, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + 52 * n, l + 3, l, matches);\n }\n } else if (s[0] == '=') {\n if (s[1] == '\"') {\n AddMatch(id + 81 * n, l + 3, l, matches);\n } else if (s[1] == '\\'') {\n AddMatch(id + 98 * n, l + 3, l, matches);\n }\n }\n }\n } else if (is_space) {\n /* Set is_all_caps=0 for BROTLI_TRANSFORM_UPPERCASE_FIRST and\n is_all_caps=1 otherwise (BROTLI_TRANSFORM_UPPERCASE_ALL)\n transform. */\n const BROTLI_BOOL is_all_caps =\n TO_BROTLI_BOOL(w.transform != BROTLI_TRANSFORM_UPPERCASE_FIRST);\n const uint8_t* s;\n if (!IsMatch(dictionary->words, w, &data[1], max_length - 1)) {\n continue;\n }\n /* Transforms \" \" + kUppercase{First,All} + \"\" */\n AddMatch(id + (is_all_caps ? 85 : 30) * n, l + 1, l, matches);\n has_found_match = BROTLI_TRUE;\n if (l + 2 >= max_length) {\n continue;\n }\n /* Transforms \" \" + kUppercase{First,All} + */\n s = &data[l + 1];\n if (s[0] == ' ') {\n AddMatch(id + (is_all_caps ? 83 : 15) * n, l + 2, l, matches);\n } else if (s[0] == ',') {\n if (!is_all_caps) {\n AddMatch(id + 109 * n, l + 2, l, matches);\n }\n if (s[1] == ' ') {\n AddMatch(id + (is_all_caps ? 111 : 65) * n, l + 3, l, matches);\n }\n } else if (s[0] == '.') {\n AddMatch(id + (is_all_caps ? 115 : 96) * n, l + 2, l, matches);\n if (s[1] == ' ') {\n AddMatch(id + (is_all_caps ? 117 : 91) * n, l + 3, l, matches);\n }\n } else if (s[0] == '=') {\n if (s[1] == '\"') {\n AddMatch(id + (is_all_caps ? 110 : 118) * n, l + 3, l, matches);\n } else if (s[1] == '\\'') {\n AddMatch(id + (is_all_caps ? 119 : 120) * n, l + 3, l, matches);\n }\n }\n }\n }\n }\n if (max_length >= 6) {\n /* Transforms with prefixes \"e \", \"s \", \", \" and \"\\xC2\\xA0\" */\n if ((data[1] == ' ' &&\n (data[0] == 'e' || data[0] == 's' || data[0] == ',')) ||\n (data[0] == 0xC2 && data[1] == 0xA0)) {\n size_t offset = dictionary->buckets[Hash15(&data[2])];\n BROTLI_BOOL end = !offset;\n while (!end) {\n DictWord w = dictionary->dict_words[offset++];\n const size_t l = w.len & 0x1F;\n const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];\n const size_t id = w.idx;\n end = !!(w.len & 0x80);\n w.len = (uint8_t)l;\n if (w.transform == 0 &&\n IsMatch(dictionary->words, w, &data[2], max_length - 2)) {\n if (data[0] == 0xC2) {\n AddMatch(id + 102 * n, l + 2, l, matches);\n has_found_match = BROTLI_TRUE;\n } else if (l + 2 < max_length && data[l + 2] == ' ') {\n size_t t = data[0] == 'e' ? 18 : (data[0] == 's' ? 7 : 13);\n AddMatch(id + t * n, l + 3, l, matches);\n has_found_match = BROTLI_TRUE;\n }\n }\n }\n }\n }\n if (max_length >= 9) {\n /* Transforms with prefixes \" the \" and \".com/\" */\n if ((data[0] == ' ' && data[1] == 't' && data[2] == 'h' &&\n data[3] == 'e' && data[4] == ' ') ||\n (data[0] == '.' && data[1] == 'c' && data[2] == 'o' &&\n data[3] == 'm' && data[4] == '/')) {\n size_t offset = dictionary->buckets[Hash15(&data[5])];\n BROTLI_BOOL end = !offset;\n while (!end) {\n DictWord w = dictionary->dict_words[offset++];\n const size_t l = w.len & 0x1F;\n const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];\n const size_t id = w.idx;\n end = !!(w.len & 0x80);\n w.len = (uint8_t)l;\n if (w.transform == 0 &&\n IsMatch(dictionary->words, w, &data[5], max_length - 5)) {\n AddMatch(id + (data[0] == ' ' ? 41 : 72) * n, l + 5, l, matches);\n has_found_match = BROTLI_TRUE;\n if (l + 5 < max_length) {\n const uint8_t* s = &data[l + 5];\n if (data[0] == ' ') {\n if (l + 8 < max_length &&\n s[0] == ' ' && s[1] == 'o' && s[2] == 'f' && s[3] == ' ') {\n AddMatch(id + 62 * n, l + 9, l, matches);\n if (l + 12 < max_length &&\n s[4] == 't' && s[5] == 'h' && s[6] == 'e' && s[7] == ' ') {\n AddMatch(id + 73 * n, l + 13, l, matches);\n }\n }\n }\n }\n }\n }\n }\n }\n return has_found_match;\n}\n\n/* Finds matches for one or more dictionaries, if multiple are present\n in the contextual dictionary */\nBROTLI_BOOL BrotliFindAllStaticDictionaryMatches(\n const BrotliEncoderDictionary* dictionary, const uint8_t* data,\n size_t min_length, size_t max_length, uint32_t* matches) {\n BROTLI_BOOL has_found_match =\n BrotliFindAllStaticDictionaryMatchesFor(\n dictionary, data, min_length, max_length, matches);\n\n if (!!dictionary->parent && dictionary->parent->num_dictionaries > 1) {\n uint32_t matches2[BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1];\n int l;\n const BrotliEncoderDictionary* dictionary2 = dictionary->parent->dict[0];\n if (dictionary2 == dictionary) {\n dictionary2 = dictionary->parent->dict[1];\n }\n\n for (l = 0; l < BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1; l++) {\n matches2[l] = kInvalidMatch;\n }\n\n has_found_match |= BrotliFindAllStaticDictionaryMatchesFor(\n dictionary2, data, min_length, max_length, matches2);\n\n for (l = 0; l < BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1; l++) {\n if (matches2[l] != kInvalidMatch) {\n uint32_t dist = (uint32_t)(matches2[l] >> 5);\n uint32_t len_code = matches2[l] & 31;\n uint32_t skipdist = (uint32_t)((uint32_t)(1 << dictionary->words->\n size_bits_by_length[len_code]) & ~1u) *\n (uint32_t)dictionary->num_transforms;\n /* TODO(lode): check for dist overflow */\n dist += skipdist;\n AddMatch(dist, (size_t)l, len_code, matches);\n }\n }\n }\n return has_found_match;\n}\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/static_dict.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Class to model the static dictionary. */\n\n#ifndef BROTLI_ENC_STATIC_DICT_H_\n#define BROTLI_ENC_STATIC_DICT_H_\n\n#include \"../common/platform.h\"\n\n#include \"encoder_dict.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN 37\nstatic const uint32_t kInvalidMatch = 0xFFFFFFF;\n\n/* Matches data against static dictionary words, and for each length l,\n for which a match is found, updates matches[l] to be the minimum possible\n (distance << 5) + len_code.\n Returns 1 if matches have been found, otherwise 0.\n Prerequisites:\n matches array is at least BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1 long\n all elements are initialized to kInvalidMatch */\nBROTLI_INTERNAL BROTLI_BOOL BrotliFindAllStaticDictionaryMatches(\n const BrotliEncoderDictionary* dictionary,\n const uint8_t* data, size_t min_length, size_t max_length,\n uint32_t* matches);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_STATIC_DICT_H_ */\n" }, { "path": "c/enc/static_dict_lut.c", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Lookup table for static dictionary and transforms. */\n\n#include \"static_dict_lut.h\"\n\n#include \"../common/platform.h\" /* IWYU pragma: keep */\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/dictionary.h\"\n#include \"../common/transform.h\"\n#include \"hash_base.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n\n/* TODO(eustas): deal with largest bucket(s). Not it contains 163 items. */\nstatic BROTLI_BOOL BROTLI_COLD DoBrotliEncoderInitStaticDictionaryLut(\n const BrotliDictionary* dict, uint16_t* buckets, DictWord* words,\n void* arena) {\n DictWord* slots = (DictWord*)arena;\n uint16_t* heads = (uint16_t*)(slots + BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS);\n uint16_t* counts = heads + BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS;\n uint16_t* prev = counts + BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS;\n size_t next_slot = 0;\n uint8_t transformed_word[24];\n uint8_t transformed_other_word[24];\n size_t l;\n size_t pos;\n size_t i;\n\n memset(counts, 0, BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS * sizeof(uint16_t));\n memset(heads, 0, BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS * sizeof(uint16_t));\n memset(prev, 0, BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS * sizeof(uint16_t));\n\n for (l = 4; l <= 24; ++l) {\n size_t n = 1u << dict->size_bits_by_length[l];\n const uint8_t* dict_words = dict->data + dict->offsets_by_length[l];\n for (i = 0; i < n; ++i) {\n const uint8_t* dict_word = dict_words + l * i;\n uint32_t key = Hash15(dict_word);\n slots[next_slot].len = (uint8_t)l;\n slots[next_slot].transform = BROTLI_TRANSFORM_IDENTITY;\n slots[next_slot].idx = (uint16_t)i;\n prev[next_slot] = heads[key];\n heads[key] = (uint16_t)next_slot;\n counts[key]++;\n ++next_slot;\n }\n for (i = 0; i < n; ++i) {\n uint32_t key;\n uint32_t prefix;\n BROTLI_BOOL found;\n size_t curr;\n const uint8_t* dict_word = dict_words + l * i;\n if (dict_word[0] < 'a' || dict_word[0] > 'z') continue;\n memcpy(transformed_word, dict_word, l);\n transformed_word[0] = transformed_word[0] - 32;\n key = Hash15(transformed_word);\n prefix = BROTLI_UNALIGNED_LOAD32LE(transformed_word) & ~0x20202020u;\n found = BROTLI_FALSE;\n curr = heads[key];\n while (curr != 0) {\n const uint8_t* other_word;\n uint32_t other_prefix;\n if (slots[curr].len != l) break;\n other_word = dict_words + l * slots[curr].idx;\n other_prefix = BROTLI_UNALIGNED_LOAD32LE(other_word) & ~0x20202020u;\n if (prefix == other_prefix) {\n if (memcmp(transformed_word, other_word, l) == 0) {\n found = BROTLI_TRUE;\n break;\n }\n }\n curr = prev[curr];\n }\n if (found) continue;\n slots[next_slot].len = (uint8_t)l;\n slots[next_slot].transform = BROTLI_TRANSFORM_UPPERCASE_FIRST;\n slots[next_slot].idx = (uint16_t)i;\n prev[next_slot] = heads[key];\n heads[key] = (uint16_t)next_slot;\n counts[key]++;\n ++next_slot;\n }\n for (i = 0; i < n; ++i) {\n const uint8_t* dict_word = dict_words + l * i;\n BROTLI_BOOL is_ascii = BROTLI_TRUE;\n BROTLI_BOOL has_lower = BROTLI_FALSE;\n size_t k;\n uint32_t prefix;\n uint32_t key;\n size_t curr;\n BROTLI_BOOL found;\n for (k = 0; k < l; ++k) {\n if (dict_word[k] >= 128) is_ascii = BROTLI_FALSE;\n if (k > 0 && dict_word[k] >= 'a' && dict_word[k] <= 'z')\n has_lower = BROTLI_TRUE;\n }\n if (!is_ascii || !has_lower) continue;\n memcpy(transformed_word, dict_word, l);\n prefix = BROTLI_UNALIGNED_LOAD32LE(transformed_word) & ~0x20202020u;\n for (k = 0; k < l; ++k) {\n if (transformed_word[k] >= 'a' && transformed_word[k] <= 'z') {\n transformed_word[k] = transformed_word[k] - 32;\n }\n }\n key = Hash15(transformed_word);\n found = BROTLI_FALSE;\n curr = heads[key];\n while (curr != 0) {\n const uint8_t* other_word;\n uint32_t other_prefix;\n if (slots[curr].len != l) break;\n other_word = dict_words + l * slots[curr].idx;\n other_prefix = BROTLI_UNALIGNED_LOAD32LE(other_word) & ~0x20202020u;\n if (prefix == other_prefix) {\n if (slots[curr].transform == BROTLI_TRANSFORM_IDENTITY) {\n if (memcmp(transformed_word, other_word, l) == 0) {\n found = BROTLI_TRUE;\n break;\n }\n } else if (slots[curr].transform ==\n BROTLI_TRANSFORM_UPPERCASE_FIRST) {\n if ((transformed_word[0] == (other_word[0] - 32)) &&\n memcmp(transformed_word + 1, other_word + 1, l - 1) == 0) {\n found = BROTLI_TRUE;\n break;\n }\n } else {\n for (k = 0; k < l; ++k) {\n if (other_word[k] >= 'a' && other_word[k] <= 'z') {\n transformed_other_word[k] = other_word[k] - 32;\n } else {\n transformed_other_word[k] = other_word[k];\n }\n }\n if (memcmp(transformed_word, transformed_other_word, l) == 0) {\n found = BROTLI_TRUE;\n break;\n }\n }\n }\n curr = prev[curr];\n }\n if (found) {\n continue;\n }\n slots[next_slot].len = (uint8_t)l;\n slots[next_slot].transform = BROTLI_TRANSFORM_UPPERCASE_ALL;\n slots[next_slot].idx = (uint16_t)i;\n prev[next_slot] = heads[key];\n heads[key] = (uint16_t)next_slot;\n counts[key]++;\n ++next_slot;\n }\n }\n\n if (next_slot != 31704) return BROTLI_FALSE;\n pos = 0;\n /* Unused; makes offsets start from 1. */\n words[pos].len = 0;\n words[pos].transform = 0;\n words[pos].idx = 0;\n pos++;\n for (i = 0; i < BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS; ++i) {\n size_t num_words = counts[i];\n size_t curr;\n if (num_words == 0) {\n buckets[i] = 0;\n continue;\n }\n buckets[i] = (uint16_t)pos;\n curr = heads[i];\n pos += num_words;\n for (size_t k = 0; k < num_words; ++k) {\n words[pos - 1 - k] = slots[curr];\n curr = prev[curr];\n }\n words[pos - 1].len |= 0x80;\n }\n return BROTLI_TRUE;\n}\n\nBROTLI_BOOL BrotliEncoderInitStaticDictionaryLut(\n const BrotliDictionary* dict, uint16_t* buckets, DictWord* words) {\n size_t arena_size =\n BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS *\n (sizeof(uint16_t) + sizeof(DictWord)) +\n BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS * 2 * sizeof(uint16_t);\n void* arena = malloc(arena_size);\n BROTLI_BOOL ok;\n if (arena == NULL) {\n return BROTLI_FALSE;\n }\n ok = DoBrotliEncoderInitStaticDictionaryLut(dict, buckets, words, arena);\n free(arena);\n return ok;\n}\n\nBROTLI_MODEL(\"small\")\nuint16_t kStaticDictionaryBuckets[BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS];\nBROTLI_MODEL(\"small\")\nDictWord kStaticDictionaryWords[BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS];\n\n#else /* BROTLI_STATIC_INIT */\n\n/* Embed kStaticDictionaryBuckets and kStaticDictionaryWords. */\n#include \"static_dict_lut_inc.h\"\n\n#endif /* BROTLI_STATIC_INIT */\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/static_dict_lut.h", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Lookup table for static dictionary and transforms. */\n\n#ifndef BROTLI_ENC_STATIC_DICT_LUT_H_\n#define BROTLI_ENC_STATIC_DICT_LUT_H_\n\n#include \"../common/dictionary.h\"\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\ntypedef struct DictWord {\n /* Highest bit is used to indicate end of bucket. */\n uint8_t len;\n uint8_t transform;\n uint16_t idx;\n} DictWord;\n\n/* Buckets are Hash15 results. */\n#define BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS 32768\n#define BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS 31705\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\nBROTLI_INTERNAL BROTLI_BOOL BrotliEncoderInitStaticDictionaryLut(\n const BrotliDictionary* dictionary, uint16_t* buckets, DictWord* words);\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\") uint16_t\n kStaticDictionaryBuckets[BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS];\nBROTLI_INTERNAL extern BROTLI_MODEL(\"small\") DictWord\n kStaticDictionaryWords[BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS];\n#else\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\") uint16_t\n kStaticDictionaryBuckets[BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS];\nBROTLI_INTERNAL extern const BROTLI_MODEL(\"small\") DictWord\n kStaticDictionaryWords[BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS];\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_STATIC_DICT_LUT_H_ */\n" }, { "path": "c/enc/static_dict_lut_inc.h", "content": "const BROTLI_MODEL(\"small\")\nuint16_t kStaticDictionaryBuckets[BROTLI_ENC_STATIC_DICT_LUT_NUM_BUCKETS] = {\n1,0,0,0,0,0,0,0,0,3,6,0,0,0,0,0,20,0,0,0,21,0,22,0,0,0,0,0,0,0,0,23,0,0,25,0,29,\n0,53,0,0,0,0,0,0,55,0,0,0,0,0,0,61,76,0,0,0,94,0,0,0,0,0,0,96,0,97,0,98,0,0,0,0,\n0,0,0,99,101,106,108,0,0,0,0,0,110,0,111,112,0,113,118,124,0,0,0,0,0,125,128,0,0\n,0,0,129,0,0,131,0,0,0,0,0,0,132,0,0,135,0,0,0,137,0,0,0,0,0,138,139,0,0,0,0,0,0\n,0,142,143,144,0,0,0,0,0,145,0,0,0,146,149,151,152,0,0,153,0,0,0,0,0,0,0,0,0,0,0\n,0,0,0,0,154,0,0,0,0,0,0,155,0,0,0,0,160,182,0,0,0,0,0,0,183,0,0,0,188,189,0,0,\n192,0,0,0,0,0,0,194,0,0,0,0,0,0,0,0,197,202,209,0,0,210,0,224,0,0,0,225,0,0,0,0,\n0,0,0,0,0,0,231,0,0,0,232,0,240,0,0,242,0,0,0,0,0,0,0,0,0,0,0,244,0,0,0,246,0,0,\n249,251,253,0,0,0,0,0,258,0,0,261,263,0,0,0,267,0,0,268,0,269,0,0,0,0,0,0,0,0,0,\n271,0,0,0,0,0,0,272,0,273,0,277,0,278,286,0,0,0,0,287,0,289,290,291,0,0,0,295,0,\n0,296,297,0,0,0,0,0,0,0,0,0,0,298,0,0,0,299,0,0,305,0,324,0,0,0,0,0,327,0,328,\n329,0,0,0,0,336,0,0,340,0,341,342,343,0,0,346,0,348,0,0,0,0,0,0,349,351,0,0,355,\n0,363,0,364,0,368,369,0,370,0,0,0,0,0,0,0,372,0,0,0,0,0,0,0,0,0,0,0,373,0,375,0,\n0,0,0,376,377,0,0,394,395,396,0,0,398,0,0,0,0,400,0,0,408,0,0,0,0,420,0,0,0,0,0,\n0,421,0,0,422,423,0,0,429,435,436,442,0,0,443,0,444,445,453,456,0,457,0,0,0,0,0,\n458,0,0,0,459,0,0,0,460,0,462,463,465,0,0,0,0,0,0,466,469,0,0,0,0,0,0,470,0,0,0,\n474,0,476,0,0,0,0,483,0,485,0,0,0,486,0,0,488,491,492,0,0,497,499,500,0,501,0,0,\n0,505,0,0,506,0,0,0,507,0,0,0,509,0,0,0,0,511,512,519,0,0,0,0,0,0,529,530,0,0,0,\n534,0,0,0,0,543,0,0,0,0,0,0,0,0,0,553,0,0,0,0,557,560,0,0,0,0,0,0,561,0,564,0,0,\n0,0,0,0,565,566,0,575,0,619,0,620,0,0,623,624,0,0,0,625,0,0,626,627,0,0,628,0,0,\n0,0,630,0,631,0,0,0,0,0,0,0,0,0,641,0,0,0,0,643,656,668,0,0,0,673,0,0,0,674,0,0,\n0,0,0,0,0,0,682,0,687,0,690,0,693,699,700,0,0,0,0,0,0,704,705,0,0,0,0,707,710,0,\n711,0,0,0,0,726,0,0,729,0,0,0,730,731,0,0,0,0,0,752,0,0,0,762,0,763,0,0,767,0,0,\n0,770,774,0,0,775,0,0,0,0,0,0,0,0,0,0,776,0,0,0,777,783,0,0,0,785,788,0,0,0,0,\n790,0,0,0,793,0,0,0,0,794,0,0,804,819,821,0,827,0,0,0,834,0,0,835,0,0,0,841,0,\n844,0,850,851,859,0,860,0,0,0,0,0,0,0,874,0,876,0,877,890,0,0,0,0,0,0,0,0,893,\n894,898,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,899,0,0,0,900,904,906,0,0,0,907,0,908,909,\n0,910,0,0,0,0,911,0,0,0,0,0,916,0,0,0,922,925,0,930,0,934,0,0,0,0,0,943,0,0,944,\n0,953,954,0,0,0,0,0,0,955,0,962,963,0,0,976,0,0,977,978,979,980,0,981,0,0,0,0,\n984,0,0,985,0,0,987,989,991,0,0,0,0,0,0,0,0,0,992,0,0,0,993,0,0,0,0,0,0,996,0,0,\n0,1000,0,0,0,0,0,1002,0,0,0,0,1005,1007,0,0,0,1009,0,0,0,1010,0,0,0,0,0,0,1011,0\n,1012,0,0,0,0,1014,1016,0,0,0,1020,0,1021,0,0,0,0,1022,0,0,0,1024,0,0,0,0,0,0,\n1025,0,0,1026,1027,0,0,0,0,0,1031,0,1033,0,0,0,0,1034,0,0,0,1037,1040,0,0,0,1042\n,1043,0,0,1053,0,1054,0,0,1057,0,0,0,1058,0,0,1060,0,0,0,0,0,0,0,1061,0,0,1062,0\n,0,0,0,1063,0,0,0,0,1064,0,0,0,0,0,1065,0,0,0,0,1066,1067,0,0,0,1069,1070,1072,0\n,0,0,0,0,0,1073,0,1075,0,0,0,0,0,0,1080,1084,0,0,0,0,1088,0,0,0,0,0,0,1094,0,\n1095,0,1107,0,0,0,1112,1114,0,1119,0,1122,0,0,1126,0,1129,0,1130,0,0,0,0,0,1132,\n0,0,0,0,0,0,1144,0,0,1145,1146,0,1148,1149,0,0,1150,1151,0,0,0,0,1152,0,1153,0,0\n,0,0,0,1154,0,1163,0,0,0,1164,0,0,0,0,0,1165,0,1167,0,1170,0,0,0,0,0,1171,1172,0\n,0,0,0,0,0,0,0,1173,1175,1177,0,1186,0,0,0,0,0,0,0,0,0,0,1195,0,0,1221,0,0,1224,\n0,0,1227,0,0,0,0,0,1228,1229,0,0,1230,0,0,0,0,0,0,0,0,0,1231,0,0,0,1233,0,0,1243\n,1244,1246,1248,0,0,0,0,1254,1255,1258,1259,0,0,0,1260,0,0,1261,0,0,0,1262,1264,\n0,0,1265,0,0,0,0,0,0,0,0,0,0,0,0,1266,0,1267,0,0,0,0,1273,1274,1276,1289,0,0,\n1291,1292,1293,0,0,1294,1295,1296,0,0,0,0,1302,0,1304,0,0,0,0,0,0,0,0,0,1311,\n1312,0,1314,0,1316,1320,1321,0,0,0,0,0,0,0,1322,1323,1324,0,1335,0,1336,0,0,0,0,\n1341,1342,0,1346,0,1357,0,0,0,1358,1360,0,0,0,0,0,0,1361,0,0,0,1362,1365,0,1366,\n0,0,0,0,0,0,0,1379,0,0,0,0,0,0,0,0,0,0,0,0,1386,0,1388,0,0,0,0,0,0,0,0,0,0,0,0,0\n,0,1395,0,0,0,0,1403,0,1405,0,0,1407,0,0,0,0,0,1408,1409,0,1410,0,0,0,1412,1413,\n1416,0,0,1429,1451,0,0,1454,0,0,0,0,0,0,0,1455,0,0,0,0,0,0,0,1456,0,0,0,0,1459,\n1460,1461,1475,0,0,0,0,0,0,1477,0,1480,0,1481,0,0,1486,0,0,1495,0,0,0,1496,0,0,\n1498,1499,1501,1520,1521,0,0,0,1526,0,0,0,0,1528,1529,0,1533,1536,0,0,0,1537,\n1538,1549,0,1550,1558,1559,1572,0,1573,0,0,0,0,0,0,0,0,0,1575,0,0,0,0,0,1579,0,\n1599,0,1603,0,1604,0,1605,0,0,0,0,0,1608,1610,0,0,0,0,1611,0,1615,0,1616,1618,0,\n1619,0,0,1622,0,0,0,0,1634,0,0,0,1635,0,0,0,1641,0,0,0,0,0,0,0,0,0,1643,0,0,0,\n1650,0,0,1652,0,0,0,0,0,1653,0,0,0,1654,0,0,0,0,1655,0,1662,0,0,1663,1664,0,0,\n1668,0,0,1669,1670,0,1672,1673,0,0,0,0,0,1674,0,0,0,1675,1676,1680,0,1682,0,0,\n1687,0,0,0,0,0,1704,0,0,1705,0,0,1721,0,0,0,0,1734,1735,0,0,0,0,1737,0,0,0,0,\n1739,0,0,1740,0,0,0,0,0,0,0,0,0,0,1741,1743,0,0,0,0,1745,0,0,0,1749,0,0,0,1751,0\n,0,0,0,0,0,1760,0,0,0,0,1765,0,0,0,0,0,1784,0,1785,1787,0,0,0,0,1788,1789,0,0,0,\n0,1790,1791,1793,0,1798,1799,0,0,0,0,1801,0,1803,1805,0,0,0,1806,1811,0,1812,\n1814,0,1821,0,0,0,0,0,1822,1833,0,0,0,0,0,0,1848,0,0,0,0,0,0,1857,0,0,0,1859,0,0\n,0,0,1861,0,0,0,0,0,0,0,1866,0,1921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0,29109,0,0,0,29115,0,0,29120,0,0,29138,29140,0,0,0,0,0,0,0,0,0,\n29152,0,29160,29174,0,29176,0,0,29180,0,29181,0,0,0,0,0,0,0,0,29228,0,0,29229,0,\n0,29230,0,0,0,0,0,0,0,0,0,0,29234,0,0,0,29241,0,29245,0,29248,0,29250,29256,\n29280,0,29282,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29285,0,0,29286,29291,29292,0,0,0,0,\n29294,0,29295,0,0,0,0,0,29296,29297,29298,29300,0,29302,0,0,29304,29307,0,29312,\n0,0,0,29322,0,0,29323,0,0,29324,29326,29328,0,29335,0,0,0,0,0,0,0,29338,29339,0,\n0,0,0,0,29341,29343,0,0,0,0,29344,0,0,0,0,0,29345,0,0,0,0,29346,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,29347,29348,29349,0,0,29354,0,0,29355,0,0,0,0,0,0,0,0,29357,0,0,\n0,0,29364,0,29365,0,0,0,0,0,0,0,29366,0,0,29368,0,0,0,0,0,0,0,0,29378,0,29381,0,\n0,0,0,0,0,0,0,29386,0,0,0,0,0,0,29389,0,0,0,29390,0,0,29391,29397,0,29398,29412,\n29414,29418,29419,0,0,0,0,0,0,0,29420,0,0,0,0,0,0,0,29423,0,0,0,29435,0,0,0,\n29437,0,0,29439,0,29441,0,0,0,0,29443,0,29446,29450,29452,0,0,0,0,0,29456,0,0,0,\n0,0,29461,0,0,0,29464,0,0,0,0,0,0,0,0,29468,0,29473,0,0,0,29486,0,0,0,29490,0,0,\n0,29491,29492,0,0,29497,0,0,0,29498,0,29499,0,29502,29505,0,29509,0,0,0,29510,0,\n0,0,29512,0,0,0,29516,0,0,0,0,0,0,0,0,29518,0,29519,0,0,0,0,0,29520,29521,29529,\n0,0,0,0,0,0,0,0,29530,0,0,29531,29538,0,29540,0,0,0,29542,0,29543,29544,29547,0,\n0,29548,0,0,0,29549,0,0,0,29550,0,0,29552,0,0,0,0,29558,29561,0,29562,29564,0,0,\n29565,0,0,29566,0,0,0,0,0,0,0,0,0,0,29578,29584,29586,29591,0,0,0,0,29593,29594,\n0,0,29597,0,0,29613,0,29614,0,29615,0,0,0,0,29616,29617,0,0,29625,0,0,0,29632,0,\n0,0,0,0,0,0,29633,0,0,0,0,0,29634,29635,29637,0,29638,0,29641,29643,0,0,0,0,0,0,\n29644,0,29645,0,29649,0,0,0,29650,0,29653,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29656,\n29659,0,0,29660,0,0,0,29661,0,0,0,0,0,29664,0,0,0,29671,29673,0,0,0,0,0,0,0,\n29675,0,29677,29679,0,0,29684,0,0,0,0,0,29685,0,0,0,29687,0,0,0,29688,0,29689,\n29690,29700,0,29701,0,0,0,29702,0,29706,0,0,0,0,0,0,0,29720,0,29721,0,29727,0,\n29733,29734,0,29750,29761,0,29763,0,0,0,0,0,29764,0,0,29765,0,0,0,29771,0,0,0,0,\n0,0,0,0,0,0,0,0,29772,0,0,0,29773,29774,29775,0,0,0,0,0,0,0,0,0,0,0,29822,0,0,0,\n29824,0,29825,0,0,0,0,0,29827,0,0,0,0,0,0,0,0,29829,0,29832,29834,0,0,29835,0,0,\n29837,29838,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29843,0,0,0,0,29844,29845,0,0,0,\n0,0,0,0,0,0,29849,0,0,29869,29872,29890,29905,0,0,0,0,0,29907,29921,0,29922,0,0,\n29923,29926,29944,29946,0,0,0,0,0,0,0,29947,29948,0,0,0,29951,0,0,0,0,0,29953,0,\n0,29956,0,29957,0,0,29962,0,0,0,0,29971,0,0,0,29972,0,0,0,0,0,29978,0,29979,\n29992,30007,30008,30010,0,0,0,30013,0,0,0,0,30014,30016,0,0,0,0,0,0,0,0,0,0,0,\n30017,0,0,0,0,0,30023,30031,0,0,30033,0,0,0,0,0,0,0,0,0,0,30034,0,30038,0,30039,\n0,30040,0,0,0,0,0,0,30067,30068,0,0,0,30069,0,30072,0,0,0,30073,0,0,0,0,30075,0,\n0,0,0,0,0,30079,0,0,30080,0,0,0,0,0,30082,0,0,0,0,0,0,0,0,0,0,0,30084,30090,0,0,\n30091,0,0,0,0,30098,30118,0,30119,0,30121,30130,0,0,0,0,0,0,0,0,0,0,0,0,0,30131,\n30132,30133,0,0,0,0,0,0,30135,0,0,0,0,0,0,0,0,0,0,0,30136,0,0,30137,30138,0,0,0,\n30139,30146,0,0,0,0,0,30147,0,0,30148,30151,0,0,0,30168,0,30172,30173,0,0,0,0,0,\n0,0,0,30180,30181,0,30192,0,0,0,0,0,0,0,30194,30196,0,0,30199,0,0,30202,0,0,0,0,\n30203,0,0,0,0,0,0,0,0,0,0,30213,0,0,0,30216,0,0,30217,0,0,0,30218,0,0,0,0,30219,\n0,30220,0,30222,30227,0,0,0,0,0,30231,0,0,30233,30235,0,0,0,0,30238,0,30240,\n30243,30245,0,30250,30252,0,0,0,30269,0,0,30271,30272,0,0,0,30278,30280,0,0,\n30282,0,30284,0,30294,0,0,0,0,30295,30296,0,0,0,0,0,30298,30299,30302,30304,\n30306,0,0,0,0,0,0,30316,30317,0,0,0,30318,0,0,0,30319,0,30320,30322,30326,0,0,0,\n0,0,30327,0,30332,30348,30349,0,0,30356,0,0,0,0,0,0,0,0,30357,0,30358,0,30359,\n30360,0,0,30365,30366,30378,0,0,0,0,30379,0,0,30381,0,30385,0,30388,30397,0,0,0,\n30401,0,0,0,0,30403,0,0,0,0,0,30404,0,0,30405,0,30406,30408,0,30409,0,30410,0,0,\n0,30417,0,0,30418,30419,0,30420,0,30424,0,0,0,30427,30430,30432,0,0,0,0,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,0,30433,0,0,0,0,0,0,0,30436,0,30437,30438,0,30441,30442,0,0,\n0,30445,0,0,0,0,30452,30456,30457,0,0,0,30458,0,30464,0,0,0,0,0,0,30467,0,30469,\n0,0,0,0,0,30477,0,0,30484,0,0,0,0,0,30485,0,0,0,0,0,30486,30487,30497,30498,0,0,\n0,0,0,0,0,0,0,0,30505,0,30508,0,0,0,30509,30510,0,30514,30516,0,0,0,0,0,0,0,0,0,\n0,0,30523,0,30524,0,30525,0,0,0,0,30537,0,0,30538,0,0,0,0,0,30553,0,0,30555,\n30556,30558,30559,30560,0,0,30561,0,30562,0,0,0,0,0,0,0,0,30563,30570,30571,0,\n30586,30587,0,0,30590,0,0,30594,0,0,0,0,30611,30612,30623,30634,0,0,30636,30640,\n30655,30656,0,30657,0,0,30658,30669,0,30670,0,30676,30678,0,0,0,0,0,0,0,30679,0,\n0,0,0,0,0,0,0,0,0,0,30695,0,0,30698,0,0,0,0,30700,0,0,0,0,30701,0,30702,30703,0,\n0,0,0,30707,0,0,0,30709,0,0,30710,30719,30729,0,0,0,0,0,0,0,0,0,30731,0,0,30733,\n0,0,0,30734,0,0,0,0,0,30736,30737,0,0,0,30740,0,0,0,30743,0,30746,0,30747,30748,\n0,0,30751,30752,30753,0,0,0,30754,0,0,30760,0,0,0,0,0,0,0,30763,0,30764,0,0,\n30766,0,30769,30770,30771,30774,30777,0,0,30779,30780,30781,0,0,0,0,30790,0,0,0,\n30792,0,0,0,0,30810,0,0,0,0,0,0,0,30812,30819,0,0,30823,30824,0,30825,0,30827,0,\n0,0,0,0,0,30828,0,0,30830,0,0,0,30834,0,30835,0,30837,30838,0,30845,0,0,0,0,0,\n30846,30847,0,0,30849,0,30851,0,0,0,0,0,30852,30858,0,0,30859,0,30865,0,0,30866,\n0,0,30868,0,0,30869,0,0,0,30881,30883,0,0,0,0,0,30889,0,30891,0,0,0,0,30894,0,\n30895,0,30897,0,30898,0,0,0,30904,30906,0,30909,0,0,0,0,0,0,30910,0,0,0,30915,\n30933,30942,0,0,0,0,30943,0,0,30945,0,0,0,0,0,0,30946,0,0,30947,0,0,30955,30956,\n0,0,30960,0,0,30961,30962,30966,0,0,30969,30974,0,0,0,30976,0,0,30977,0,30978,\n30982,0,0,0,0,0,0,0,30994,30995,30998,0,31000,0,0,31001,0,0,31003,31005,0,0,\n31006,31011,0,0,31014,0,31016,0,0,0,0,31018,0,0,31020,31023,31024,31025,0,0,0,0,\n0,0,0,0,0,0,0,0,0,0,31027,31028,31029,0,0,0,0,0,0,31032,0,0,0,0,0,0,0,0,0,0,0,\n31036,31037,31038,0,0,0,31041,31043,31045,0,31047,0,0,0,31048,0,31049,0,0,0,\n31053,31054,31055,0,0,31063,0,0,0,0,0,31066,0,31068,31071,0,0,0,31072,31073,0,0,\n0,0,31075,0,0,31076,0,0,0,31077,31079,0,31080,0,0,0,0,0,0,0,0,0,0,31087,0,31142,\n0,31144,0,0,31145,31146,31147,0,0,0,0,0,0,0,0,0,0,0,0,0,0,31149,0,31151,31152,0,\n0,0,0,0,0,0,31162,31171,31174,31175,0,0,0,31176,0,0,0,0,0,0,0,31179,0,0,0,31186,\n0,0,0,31192,31195,0,0,31196,0,0,0,0,0,0,0,0,31198,0,0,0,0,0,31199,0,0,0,31205,0,\n0,0,0,31211,31215,0,0,0,0,31231,0,31232,0,0,0,0,0,0,0,0,0,0,31233,31236,31253,0,\n31254,0,0,0,0,0,0,31255,0,0,31257,0,0,0,0,0,0,0,0,0,31258,31259,0,0,31260,0,\n31261,0,0,0,0,0,31262,31263,0,0,31264,0,31266,0,31267,0,0,0,0,0,31281,0,31282,0,\n31284,0,0,31285,31287,31288,0,0,31290,0,0,0,31292,31295,0,31299,0,31300,0,0,0,0,\n0,31302,0,0,0,0,31303,0,0,0,0,0,0,31304,0,0,0,0,0,31305,31308,31309,31315,0,\n31317,0,0,0,0,0,31323,0,31324,0,0,0,0,0,31325,31327,0,0,31331,0,0,0,0,0,31333,0,\n0,0,0,0,31336,0,0,31337,0,0,0,0,0,0,31338,0,0,0,0,0,0,0,0,0,0,0,0,31339,0,0,0,0,\n0,0,0,31342,0,0,0,0,31345,0,0,0,0,0,0,0,0,31347,0,0,0,0,0,0,31348,0,0,31350,\n31351,0,31352,0,0,31354,0,0,0,0,31355,0,0,31356,0,0,0,0,0,0,0,0,0,0,31363,0,\n31372,0,0,31373,0,0,0,0,0,0,0,0,0,31376,0,31388,0,31389,0,31392,0,31401,0,31405,\n31407,31408,0,31409,0,0,0,0,0,0,31413,31415,0,0,0,31416,31418,0,0,0,0,0,0,31422,\n31423,0,0,31424,0,31425,31432,0,0,0,0,0,0,0,0,0,31433,0,0,0,0,0,0,0,0,31434,0,0,\n0,0,0,0,31435,0,0,0,0,31438,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,31442,0,31444,0,\n31448,0,0,31451,0,0,0,0,31452,0,31461,31465,0,0,31466,0,0,31467,0,0,31468,0,0,0,\n31469,31473,0,31476,0,0,0,0,31489,31490,0,0,0,0,0,0,0,31492,31493,31494,0,0,0,0,\n31501,31504,31505,0,0,0,0,0,0,0,0,0,31509,0,0,0,0,31510,0,0,31511,0,0,31513,0,0,\n0,0,0,0,0,0,0,31514,0,31522,31536,31539,31540,0,31541,0,0,0,0,0,0,31546,31553,\n31559,0,0,0,31560,31561,31562,0,0,31564,31567,0,31569,0,0,0,31570,0,0,0,0,31571,\n0,0,0,0,0,0,31572,31574,31580,31581,0,0,31582,31584,31585,31586,31595,0,31596,0,\n0,0,0,31597,0,31599,0,31600,31601,0,0,31603,31604,0,0,31608,31610,0,0,0,31611,0,\n31615,0,0,0,0,31616,0,0,0,0,0,0,31617,0,0,0,0,0,31618,0,0,0,0,0,0,31621,0,0,0,0,\n0,0,0,0,0,31622,31625,0,0,0,0,31627,0,31641,0,0,31642,0,0,31643,0,0,0,0,0,0,0,0,\n0,31644,0,31646,0,0,0,0,31648,0,0,0,31652,0,0,0,31657,0,0,31676,0,0,0,0,0,0,0,\n31689,31691,31692,0,31694,0,0,0,31696,0,31702,0,31703,0};\n\nconst BROTLI_MODEL(\"small\")\nDictWord kStaticDictionaryWords[BROTLI_ENC_STATIC_DICT_LUT_NUM_ITEMS] = 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92},{11,10,79},{12,10,499},{13,10,199},{141,10,451}\n,{4,0,407},{5,11,792},{133,11,900},{132,0,560},{135,0,183},{7,10,558},{8,10,353}\n,{141,0,490},{4,0,475},{5,10,785},{6,0,731},{11,0,35},{13,0,71},{13,0,177},{142,\n0,422},{8,10,81},{9,10,189},{9,10,201},{11,10,478},{11,10,712},{141,10,338},{4,0\n,418},{4,0,819},{133,10,353},{151,10,26},{4,11,901},{133,11,776},{132,0,575},{7,\n0,818},{16,0,92},{17,0,14},{17,0,45},{18,0,75},{148,0,18},{6,0,222},{7,0,636},{7\n,0,1620},{8,0,409},{9,0,693},{139,0,77},{6,10,25},{7,10,855},{7,10,1258},{144,10\n,32},{6,0,1880},{6,0,1887},{6,0,1918},{6,0,1924},{9,0,967},{9,0,995},{9,0,1015},\n{12,0,826},{12,0,849},{12,0,857},{12,0,860},{12,0,886},{12,0,932},{18,0,228},{18\n,0,231},{146,0,240},{134,0,633},{134,0,1308},{4,11,37},{5,11,334},{135,11,1253},\n{4,10,4},{7,10,1118},{7,10,1320},{7,10,1706},{8,10,277},{9,10,622},{10,0,86},{11\n,10,724},{12,10,350},{12,10,397},{13,10,28},{13,10,159},{15,10,89},{18,10,5},{19\n,10,9},{20,10,34},{150,10,47},{132,11,508},{137,11,448},{12,11,107},{146,11,31},\n{132,0,817},{134,0,663},{133,0,882},{134,0,914},{132,11,540},{132,11,533},{136,\n11,608},{8,0,885},{138,0,865},{132,0,426},{6,0,58},{7,0,745},{7,0,1969},{8,0,399\n},{8,0,675},{9,0,479},{9,0,731},{10,0,330},{10,0,593},{10,0,817},{11,0,32},{11,0\n,133},{11,0,221},{145,0,68},{134,10,255},{7,0,102},{137,0,538},{137,10,216},{7,\n11,253},{136,11,549},{135,11,912},{9,10,183},{139,10,286},{11,10,956},{151,10,3}\n,{8,11,527},{18,11,60},{147,11,24},{4,10,536},{7,10,1141},{10,10,723},{139,10,\n371},{133,11,920},{7,0,876},{135,10,285},{135,10,560},{132,10,690},{142,11,126},\n{11,10,33},{12,10,571},{149,10,1},{133,0,566},{4,11,483},{9,0,139},{10,0,399},{\n11,0,469},{12,0,634},{141,0,223},{6,0,48},{135,0,63},{7,10,1862},{12,10,491},{12\n,10,520},{13,10,383},{14,10,244},{146,0,12},{135,11,1665},{132,11,448},{9,11,495\n},{146,11,104},{6,0,114},{7,0,1224},{7,0,1556},{136,0,3},{4,10,190},{133,10,554}\n,{5,10,1001},{8,0,576},{137,0,267},{133,10,446},{133,0,933},{139,11,1009},{8,11,\n653},{13,11,93},{147,11,14},{6,0,692},{6,0,821},{134,0,1077},{5,11,172},{135,11,\n801},{138,0,752},{4,0,375},{134,0,638},{134,0,1011},{140,11,540},{5,11,260},{137\n,0,96},{139,11,587},{135,10,1231},{4,10,304},{12,0,30},{13,0,148},{14,0,87},{14,\n0,182},{16,0,42},{148,0,70},{6,0,1398},{7,0,56},{7,0,1989},{8,0,337},{8,0,738},{\n9,0,600},{12,0,37},{13,0,447},{142,0,92},{138,0,666},{5,0,394},{7,0,487},{136,0,\n246},{6,10,53},{6,10,199},{7,10,1408},{8,10,32},{8,10,93},{9,0,437},{10,10,397},\n{10,10,629},{11,10,593},{11,10,763},{13,10,326},{145,10,35},{134,10,105},{9,0,\n320},{10,0,506},{138,10,794},{7,11,57},{8,11,167},{8,11,375},{9,11,82},{9,11,561\n},{10,11,620},{10,11,770},{11,10,704},{141,10,396},{5,10,114},{5,10,255},{6,0,\n1003},{141,10,285},{7,0,866},{135,0,1163},{133,11,531},{132,0,328},{7,10,2035},{\n8,10,19},{9,10,89},{138,10,831},{8,11,194},{136,11,756},{136,0,1000},{5,11,453},\n{134,11,441},{4,0,101},{5,0,833},{7,0,1171},{136,0,744},{133,0,726},{136,10,746}\n,{138,0,176},{6,0,9},{6,0,397},{7,0,53},{7,0,1742},{10,0,632},{11,0,828},{140,0,\n146},{135,11,22},{145,11,64},{132,0,839},{11,0,417},{12,0,223},{140,0,265},{4,11\n,102},{7,11,815},{7,11,1699},{139,11,964},{5,10,955},{136,10,814},{6,0,1931},{6,\n0,2007},{18,0,246},{146,0,247},{8,0,198},{11,0,29},{140,0,534},{135,0,1771},{6,0\n,846},{7,11,1010},{11,11,733},{11,11,759},{12,11,563},{13,11,34},{14,11,101},{18\n,11,45},{146,11,129},{4,0,186},{5,0,157},{8,0,168},{138,0,6},{132,11,899},{133,\n10,56},{148,10,100},{133,0,875},{5,0,773},{5,0,991},{6,0,1635},{134,0,1788},{6,0\n,1274},{9,0,477},{141,0,78},{4,0,639},{6,11,52},{7,0,111},{8,0,581},{9,11,104},{\n9,11,559},{10,10,4},{10,10,13},{11,10,638},{12,0,177},{12,11,308},{19,11,87},{\n148,10,57},{132,11,604},{4,11,301},{133,10,738},{133,10,758},{134,0,1747},{7,11,\n1440},{11,11,854},{11,11,872},{11,11,921},{12,11,551},{13,11,472},{142,11,367},{\n7,0,1364},{7,0,1907},{141,0,158},{134,0,873},{4,0,404},{4,0,659},{7,0,552},{135,\n0,675},{135,10,1112},{139,10,328},{7,11,508},{137,10,133},{133,0,391},{5,10,110}\n,{6,10,169},{6,10,1702},{7,10,400},{8,10,538},{9,10,184},{9,10,524},{140,10,218}\n,{6,11,310},{7,11,1849},{8,11,72},{8,11,272},{8,11,431},{9,11,12},{9,11,351},{10\n,11,563},{10,11,630},{10,11,810},{11,11,367},{11,11,599},{11,11,686},{140,11,672\n},{5,0,540},{6,0,1697},{136,0,668},{132,0,883},{134,0,78},{6,10,133},{9,10,353},\n{11,10,993},{12,0,628},{146,0,79},{6,11,181},{7,11,537},{8,11,64},{9,11,127},{10\n,11,496},{12,11,510},{141,11,384},{6,10,93},{7,10,1422},{7,10,1851},{8,10,673},{\n9,10,529},{140,10,43},{137,10,371},{134,0,1460},{134,0,962},{4,11,244},{135,11,\n233},{9,10,25},{10,10,467},{138,10,559},{4,10,335},{135,10,942},{133,0,460},{135\n,11,334},{134,11,1650},{4,0,199},{139,0,34},{5,10,601},{8,10,39},{10,10,773},{11\n,10,84},{12,10,205},{142,10,1},{133,10,870},{134,0,388},{14,0,474},{148,0,120},{\n133,11,369},{139,0,271},{4,0,511},{4,10,181},{9,0,333},{9,0,379},{10,0,602},{11,\n0,441},{11,0,723},{11,0,976},{140,0,357},{134,0,608},{134,10,1652},{9,11,338},{\n150,0,49},{140,0,988},{134,0,617},{5,0,938},{136,0,707},{132,10,97},{5,10,147},{\n6,10,286},{7,10,1362},{141,10,176},{6,0,756},{134,0,1149},{133,11,896},{6,10,375\n},{7,10,169},{7,10,254},{136,10,780},{134,0,1583},{135,10,1447},{139,0,285},{7,\n11,1117},{8,11,393},{136,11,539},{135,0,344},{6,0,469},{7,0,1709},{138,0,515},{5\n,10,629},{135,10,1549},{5,11,4},{5,11,810},{6,11,13},{6,11,538},{6,11,1690},{6,\n11,1726},{7,11,499},{7,11,1819},{8,11,148},{8,11,696},{8,11,791},{12,11,125},{13\n,11,54},{143,11,9},{135,11,1268},{137,0,404},{132,0,500},{5,0,68},{134,0,383},{\n11,0,216},{139,0,340},{4,11,925},{5,11,803},{8,11,698},{138,11,828},{4,0,337},{6\n,0,353},{7,0,1934},{8,0,488},{137,0,429},{7,0,236},{7,0,1795},{8,0,259},{9,0,135\n},{9,0,177},{9,0,860},{10,0,825},{11,0,115},{11,0,370},{11,0,405},{11,0,604},{12\n,0,10},{12,0,667},{12,0,669},{13,0,76},{14,0,310},{15,0,76},{15,0,147},{148,0,23\n},{4,0,15},{4,0,490},{5,0,22},{6,0,244},{7,0,40},{7,0,200},{7,0,906},{7,0,1199},\n{9,0,616},{10,0,716},{11,0,635},{11,0,801},{140,0,458},{4,10,420},{140,0,756},{\n134,0,1504},{5,11,383},{134,0,757},{6,0,1266},{135,0,1735},{5,0,598},{7,0,791},{\n7,10,1570},{8,0,108},{9,0,123},{140,10,542},{142,11,410},{9,11,660},{138,11,347}\n};\n" }, { "path": "c/enc/static_init.c", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n#include \"static_init.h\"\n\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\n#include \"../common/dictionary.h\"\n#include \"dictionary_hash.h\"\n#include \"static_dict_lut.h\"\n#endif\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_NONE)\nstatic BROTLI_BOOL DoBrotliEncoderStaticInit(void) {\n const BrotliDictionary* dict = BrotliGetDictionary();\n BROTLI_BOOL ok = BrotliEncoderInitStaticDictionaryLut(\n dict, kStaticDictionaryBuckets, kStaticDictionaryWords);\n if (!ok) return BROTLI_FALSE;\n ok = BrotliEncoderInitDictionaryHash(dict, kStaticDictionaryHashWords,\n kStaticDictionaryHashLengths);\n if (!ok) return BROTLI_FALSE;\n return BROTLI_TRUE;\n}\n#endif /* BROTLI_STATIC_INIT_NONE */\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_EARLY)\nstatic BROTLI_BOOL kEarlyInitOk;\nstatic __attribute__((constructor)) void BrotliEncoderStaticInitEarly(void) {\n kEarlyInitOk = DoBrotliEncoderStaticInit();\n}\n#elif (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_LAZY)\nstatic BROTLI_BOOL kLazyInitOk;\nvoid BrotliEncoderLazyStaticInitInner(void) {\n kLazyInitOk = DoBrotliEncoderStaticInit();\n}\n#endif /* BROTLI_STATIC_INIT_EARLY */\n\nBROTLI_BOOL BrotliEncoderEnsureStaticInit(void) {\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_NONE)\n return BROTLI_TRUE;\n#elif (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_EARLY)\n return kEarlyInitOk;\n#else\n return kLazyInitOk;\n#endif\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/static_init.h", "content": "/* Copyright 2025 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Central point for static initialization. */\n\n#ifndef THIRD_PARTY_BROTLI_ENC_STATIC_INIT_H_\n#define THIRD_PARTY_BROTLI_ENC_STATIC_INIT_H_\n\n#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#if (BROTLI_STATIC_INIT == BROTLI_STATIC_INIT_LAZY)\nBROTLI_INTERNAL void BrotliEncoderLazyStaticInitInner(void);\nBROTLI_INTERNAL void BrotliEncoderLazyStaticInit(void);\n#endif /* BROTLI_STATIC_INIT */\n\nBROTLI_INTERNAL BROTLI_BOOL BrotliEncoderEnsureStaticInit(void);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif // THIRD_PARTY_BROTLI_ENC_STATIC_INIT_H_\n" }, { "path": "c/enc/static_init_lazy.cc", "content": "#include \"../common/platform.h\"\n#include \"../common/static_init.h\"\n#include \"static_init.h\"\n\n#if (BROTLI_STATIC_INIT != BROTLI_STATIC_INIT_LAZY)\n#error \"BROTLI_STATIC_INIT should be BROTLI_STATIC_INIT_LAZY\"\n#else\nvoid BrotliEncoderLazyStaticInit(void) {\n /* From https://en.cppreference.com/w/cpp/language/storage_duration.html:\n ### Static block variables ###\n Block variables with static or thread (since C++11) storage duration are\n initialized the first time control passes through their declaration...\n On all further calls, the declaration is skipped...\n If multiple threads attempt to initialize the same static local variable\n concurrently, the initialization occurs exactly once...\n Usual implementations of this feature use variants of the double-checked\n locking pattern, which reduces runtime overhead for already-initialized\n local statics to a single non-atomic boolean comparison.\n */\n static bool ok = [](){\n BrotliEncoderLazyStaticInitInner();\n return true;\n }();\n if (!ok) BROTLI_CRASH();\n}\n#endif /* BROTLI_STATIC_INIT_LAZY */\n" }, { "path": "c/enc/utf8_util.c", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Heuristics for deciding about the UTF8-ness of strings. */\n\n#include \"utf8_util.h\"\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic size_t BrotliParseAsUTF8(\n int* symbol, const uint8_t* input, size_t size) {\n /* ASCII */\n if ((input[0] & 0x80) == 0) {\n *symbol = input[0];\n if (*symbol > 0) {\n return 1;\n }\n }\n /* 2-byte UTF8 */\n if (size > 1u &&\n (input[0] & 0xE0) == 0xC0 &&\n (input[1] & 0xC0) == 0x80) {\n *symbol = (((input[0] & 0x1F) << 6) |\n (input[1] & 0x3F));\n if (*symbol > 0x7F) {\n return 2;\n }\n }\n /* 3-byte UFT8 */\n if (size > 2u &&\n (input[0] & 0xF0) == 0xE0 &&\n (input[1] & 0xC0) == 0x80 &&\n (input[2] & 0xC0) == 0x80) {\n *symbol = (((input[0] & 0x0F) << 12) |\n ((input[1] & 0x3F) << 6) |\n (input[2] & 0x3F));\n if (*symbol > 0x7FF) {\n return 3;\n }\n }\n /* 4-byte UFT8 */\n if (size > 3u &&\n (input[0] & 0xF8) == 0xF0 &&\n (input[1] & 0xC0) == 0x80 &&\n (input[2] & 0xC0) == 0x80 &&\n (input[3] & 0xC0) == 0x80) {\n *symbol = (((input[0] & 0x07) << 18) |\n ((input[1] & 0x3F) << 12) |\n ((input[2] & 0x3F) << 6) |\n (input[3] & 0x3F));\n if (*symbol > 0xFFFF && *symbol <= 0x10FFFF) {\n return 4;\n }\n }\n /* Not UTF8, emit a special symbol above the UTF8-code space */\n *symbol = 0x110000 | input[0];\n return 1;\n}\n\n/* Returns 1 if at least min_fraction of the data is UTF8-encoded.*/\nBROTLI_BOOL BrotliIsMostlyUTF8(\n const uint8_t* data, const size_t pos, const size_t mask,\n const size_t length, const double min_fraction) {\n size_t size_utf8 = 0;\n size_t i = 0;\n while (i < length) {\n int symbol;\n size_t bytes_read =\n BrotliParseAsUTF8(&symbol, &data[(pos + i) & mask], length - i);\n i += bytes_read;\n if (symbol < 0x110000) size_utf8 += bytes_read;\n }\n return TO_BROTLI_BOOL((double)size_utf8 > min_fraction * (double)length);\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n" }, { "path": "c/enc/utf8_util.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Heuristics for deciding about the UTF8-ness of strings. */\n\n#ifndef BROTLI_ENC_UTF8_UTIL_H_\n#define BROTLI_ENC_UTF8_UTIL_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\nstatic const double kMinUTF8Ratio = 0.75;\n\n/* Returns 1 if at least min_fraction of the bytes between pos and\n pos + length in the (data, mask) ring-buffer is UTF8-encoded, otherwise\n returns 0. */\nBROTLI_INTERNAL BROTLI_BOOL BrotliIsMostlyUTF8(\n const uint8_t* data, const size_t pos, const size_t mask,\n const size_t length, const double min_fraction);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_UTF8_UTIL_H_ */\n" }, { "path": "c/enc/write_bits.h", "content": "/* Copyright 2010 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Write bits into a byte array. */\n\n#ifndef BROTLI_ENC_WRITE_BITS_H_\n#define BROTLI_ENC_WRITE_BITS_H_\n\n#include \"../common/platform.h\"\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/* This function writes bits into bytes in increasing addresses, and within\n a byte least-significant-bit first.\n\n The function can write up to 56 bits in one go with WriteBits\n Example: let's assume that 3 bits (Rs below) have been written already:\n\n BYTE-0 BYTE+1 BYTE+2\n\n 0000 0RRR 0000 0000 0000 0000\n\n Now, we could write 5 or less bits in MSB by just shifting by 3\n and OR'ing to BYTE-0.\n\n For n bits, we take the last 5 bits, OR that with high bits in BYTE-0,\n and locate the rest in BYTE+1, BYTE+2, etc. */\nstatic BROTLI_INLINE void BrotliWriteBits(size_t n_bits,\n uint64_t bits,\n size_t* BROTLI_RESTRICT pos,\n uint8_t* BROTLI_RESTRICT array) {\n BROTLI_LOG((\"WriteBits %2d 0x%08x%08x %10d\\n\", (int)n_bits,\n (uint32_t)(bits >> 32), (uint32_t)(bits & 0xFFFFFFFF),\n (int)*pos));\n BROTLI_DCHECK((bits >> n_bits) == 0);\n BROTLI_DCHECK(n_bits <= 56);\n#if defined(BROTLI_LITTLE_ENDIAN)\n /* This branch of the code can write up to 56 bits at a time,\n 7 bits are lost by being perhaps already in *p and at least\n 1 bit is needed to initialize the bit-stream ahead (i.e. if 7\n bits are in *p and we write 57 bits, then the next write will\n access a byte that was never initialized). */\n {\n uint8_t* p = &array[*pos >> 3];\n uint64_t v = (uint64_t)(*p); /* Zero-extend 8 to 64 bits. */\n v |= bits << (*pos & 7);\n BROTLI_UNALIGNED_STORE64LE(p, v); /* Set some bits. */\n *pos += n_bits;\n }\n#else\n /* implicit & 0xFF is assumed for uint8_t arithmetics */\n {\n uint8_t* array_pos = &array[*pos >> 3];\n const size_t bits_reserved_in_first_byte = (*pos & 7);\n size_t bits_left_to_write;\n bits <<= bits_reserved_in_first_byte;\n *array_pos++ |= (uint8_t)bits;\n for (bits_left_to_write = n_bits + bits_reserved_in_first_byte;\n bits_left_to_write >= 9;\n bits_left_to_write -= 8) {\n bits >>= 8;\n *array_pos++ = (uint8_t)bits;\n }\n *array_pos = 0;\n *pos += n_bits;\n }\n#endif\n}\n\nstatic BROTLI_INLINE void BrotliWriteBitsPrepareStorage(\n size_t pos, uint8_t* array) {\n BROTLI_LOG((\"WriteBitsPrepareStorage %10d\\n\", (int)pos));\n BROTLI_DCHECK((pos & 7) == 0);\n array[pos >> 3] = 0;\n}\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_WRITE_BITS_H_ */\n" }, { "path": "c/fuzz/.bazelrc", "content": "# Force the use of Clang for C++ builds.\nbuild --action_env=CC=clang\nbuild --action_env=CXX=clang++\n\n# Define the --config=asan-libfuzzer configuration.\nbuild:asan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine=@rules_fuzzing//fuzzing/engines:libfuzzer\nbuild:asan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_instrumentation=libfuzzer\nbuild:asan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_sanitizer=asan\n\n# Define the --config=msan-libfuzzer configuration.\nbuild:msan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine=@rules_fuzzing//fuzzing/engines:libfuzzer\nbuild:msan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_instrumentation=libfuzzer\nbuild:msan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_sanitizer=msan\n\n# Define the --config=ubsan-libfuzzer configuration.\nbuild:ubsan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine=@rules_fuzzing//fuzzing/engines:libfuzzer\nbuild:ubsan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_instrumentation=libfuzzer\nbuild:ubsan-libfuzzer --@rules_fuzzing//fuzzing:cc_engine_sanitizer=ubsan\n" }, { "path": "c/fuzz/BUILD.bazel", "content": "load(\"@rules_fuzzing//fuzzing:cc_defs.bzl\", \"cc_fuzz_test\")\n\npackage(default_visibility = [\"//visibility:public\"])\n\nlicenses([\"notice\"]) # MIT\n\n# To start fuzzing run: bazel run --config=asan-libfuzzer //:fuzz_config_run\ncc_fuzz_test(\n name = \"decode_fuzzer\",\n srcs = [\"decode_fuzzer.c\"],\n deps = [\"@org_brotli//:brotlidec\"],\n)\n" }, { "path": "c/fuzz/MODULE.bazel", "content": "# Copyright 2025 The Brotli Authors. All rights reserved.\n#\n# Distributed under MIT license.\n# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n\n\"\"\"Brotli reference implementation\"\"\"\n\nmodule(\n name = \"brotli_fuzz\",\n version = \"1.2.0\",\n repo_name = \"org_brotli_fuzz\",\n)\n\nbazel_dep(name = \"rules_fuzzing\", version = \"0.6.0\")\n\nbazel_dep(name = \"brotli\", version = \"1.2.0\", repo_name = \"org_brotli\")\nlocal_path_override(\n module_name = \"brotli\",\n path = \"../..\",\n)\n" }, { "path": "c/fuzz/decode_fuzzer.c", "content": "// Copyright 2015 The Chromium Authors. All rights reserved.\n// Use of this source code is governed by a BSD-style license that can be\n// found in the LICENSE file.\n\n#include \n#include \n#include \n\n#include \n\n// Entry point for LibFuzzer.\nint LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {\n size_t addend = 0;\n if (size > 0)\n addend = data[size - 1] & 7;\n const uint8_t* next_in = data;\n\n const int kBufferSize = 1024;\n uint8_t* buffer = (uint8_t*) malloc(kBufferSize);\n if (!buffer) {\n // OOM is out-of-scope here.\n return 0;\n }\n /* The biggest \"magic number\" in brotli is 16MiB - 16, so no need to check\n the cases with much longer output. */\n const size_t total_out_limit = (addend == 0) ? (1 << 26) : (1 << 24);\n size_t total_out = 0;\n\n BrotliDecoderState* state = BrotliDecoderCreateInstance(0, 0, 0);\n if (!state) {\n // OOM is out-of-scope here.\n free(buffer);\n return 0;\n }\n\n if (addend == 0)\n addend = size;\n /* Test both fast (addend == size) and slow (addend <= 7) decoding paths. */\n for (size_t i = 0; i < size;) {\n size_t next_i = i + addend;\n if (next_i > size)\n next_i = size;\n size_t avail_in = next_i - i;\n i = next_i;\n BrotliDecoderResult result = BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT;\n while (result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) {\n size_t avail_out = kBufferSize;\n uint8_t* next_out = buffer;\n result = BrotliDecoderDecompressStream(\n state, &avail_in, &next_in, &avail_out, &next_out, &total_out);\n if (total_out > total_out_limit)\n break;\n }\n if (total_out > total_out_limit)\n break;\n if (result != BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT)\n break;\n }\n\n BrotliDecoderDestroyInstance(state);\n free(buffer);\n return 0;\n}\n" }, { "path": "c/fuzz/run_decode_fuzzer.c", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Simple runner for decode_fuzzer.cc */\n\n#include \n#include \n#include \n#include \n\nvoid LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);\n\nint main(int argc, char* *argv) {\n if (argc != 2) {\n fprintf(stderr, \"Exactly one argument is expected.\\n\");\n exit(EXIT_FAILURE);\n }\n\n FILE* f = fopen(argv[1], \"r\");\n if (!f) {\n fprintf(stderr, \"Failed to open input file.\");\n exit(EXIT_FAILURE);\n }\n\n size_t max_len = 1 << 20;\n unsigned char* tmp = (unsigned char*)malloc(max_len);\n size_t len = fread(tmp, 1, max_len, f);\n if (ferror(f)) {\n fclose(f);\n fprintf(stderr, \"Failed read input file.\");\n exit(EXIT_FAILURE);\n }\n /* Make data after the end \"inaccessible\". */\n unsigned char* data = (unsigned char*)malloc(len);\n memcpy(data, tmp, len);\n free(tmp);\n\n LLVMFuzzerTestOneInput(data, len);\n free(data);\n exit(EXIT_SUCCESS);\n}\n" }, { "path": "c/fuzz/test_fuzzer.sh", "content": "#!/usr/bin/env bash\nset -e\n\nexport CC=${CC:-cc}\n\nBROTLI=\"$( cd \"$( dirname \"${BASH_SOURCE[0]}\" )/../..\" && pwd )\"\nSRC=$BROTLI/c\n\ncd $BROTLI\n\nrm -rf bin\nmkdir bin\ncd bin\n\ncmake $BROTLI -DCMAKE_C_COMPILER=\"$CC\" \\\n -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=OFF -DENABLE_SANITIZER=address\nmake -j$(nproc) brotlidec\n\n${CC} -o run_decode_fuzzer -std=c99 -fsanitize=address -I$SRC/include \\\n $SRC/fuzz/decode_fuzzer.c $SRC/fuzz/run_decode_fuzzer.c \\\n ./libbrotlidec.a ./libbrotlicommon.a\n\nmkdir decode_corpora\nunzip $BROTLI/java/org/brotli/integration/fuzz_data.zip -d decode_corpora\n\nfor f in `ls decode_corpora`\ndo\n echo \"Testing $f\"\n ./run_decode_fuzzer decode_corpora/$f\ndone\n\ncd $BROTLI\nrm -rf bin\n" }, { "path": "c/include/brotli/decode.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/**\n * @file\n * API for Brotli decompression.\n */\n\n#ifndef BROTLI_DEC_DECODE_H_\n#define BROTLI_DEC_DECODE_H_\n\n#include \n#include \n#include /* IWYU pragma: export */\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/**\n * Opaque structure that holds decoder state.\n *\n * Allocated and initialized with ::BrotliDecoderCreateInstance.\n * Cleaned up and deallocated with ::BrotliDecoderDestroyInstance.\n */\ntypedef struct BrotliDecoderStateStruct BrotliDecoderState;\n\n/**\n * Result type for ::BrotliDecoderDecompress and\n * ::BrotliDecoderDecompressStream functions.\n */\ntypedef enum {\n /** Decoding error, e.g. corrupted input or memory allocation problem. */\n BROTLI_DECODER_RESULT_ERROR = 0,\n /** Decoding successfully completed. */\n BROTLI_DECODER_RESULT_SUCCESS = 1,\n /** Partially done; should be called again with more input. */\n BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT = 2,\n /** Partially done; should be called again with more output. */\n BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT = 3\n} BrotliDecoderResult;\n\n/**\n * Template that evaluates items of ::BrotliDecoderErrorCode.\n *\n * Example: @code {.cpp}\n * // Log Brotli error code.\n * switch (brotliDecoderErrorCode) {\n * #define CASE_(PREFIX, NAME, CODE) \\\n * case BROTLI_DECODER ## PREFIX ## NAME: \\\n * LOG(INFO) << \"error code:\" << #NAME; \\\n * break;\n * #define NEWLINE_\n * BROTLI_DECODER_ERROR_CODES_LIST(CASE_, NEWLINE_)\n * #undef CASE_\n * #undef NEWLINE_\n * default: LOG(FATAL) << \"unknown brotli error code\";\n * }\n * @endcode\n */\n#define BROTLI_DECODER_ERROR_CODES_LIST(BROTLI_ERROR_CODE, SEPARATOR) \\\n BROTLI_ERROR_CODE(_, NO_ERROR, 0) SEPARATOR \\\n /* Same as BrotliDecoderResult values */ \\\n BROTLI_ERROR_CODE(_, SUCCESS, 1) SEPARATOR \\\n BROTLI_ERROR_CODE(_, NEEDS_MORE_INPUT, 2) SEPARATOR \\\n BROTLI_ERROR_CODE(_, NEEDS_MORE_OUTPUT, 3) SEPARATOR \\\n \\\n /* Errors caused by invalid input */ \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, EXUBERANT_NIBBLE, -1) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, RESERVED, -2) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, EXUBERANT_META_NIBBLE, -3) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, SIMPLE_HUFFMAN_ALPHABET, -4) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, SIMPLE_HUFFMAN_SAME, -5) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, CL_SPACE, -6) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, HUFFMAN_SPACE, -7) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, CONTEXT_MAP_REPEAT, -8) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, BLOCK_LENGTH_1, -9) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, BLOCK_LENGTH_2, -10) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, TRANSFORM, -11) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, DICTIONARY, -12) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, WINDOW_BITS, -13) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, PADDING_1, -14) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, PADDING_2, -15) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, DISTANCE, -16) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_FORMAT_, BLOCK_SWITCH, -17) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_, COMPOUND_DICTIONARY, -18) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_, DICTIONARY_NOT_SET, -19) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_, INVALID_ARGUMENTS, -20) SEPARATOR \\\n \\\n /* Memory allocation problems */ \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, CONTEXT_MODES, -21) SEPARATOR \\\n /* Literal, insert and distance trees together */ \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, TREE_GROUPS, -22) SEPARATOR \\\n /* -23..-24 codes are reserved for distinct tree groups */ \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, CONTEXT_MAP, -25) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, RING_BUFFER_1, -26) SEPARATOR \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, RING_BUFFER_2, -27) SEPARATOR \\\n /* -28..-29 codes are reserved for dynamic ring-buffer allocation */ \\\n BROTLI_ERROR_CODE(_ERROR_ALLOC_, BLOCK_TYPE_TREES, -30) SEPARATOR \\\n \\\n /* \"Impossible\" states */ \\\n BROTLI_ERROR_CODE(_ERROR_, UNREACHABLE, -31)\n\n/**\n * Error code for detailed logging / production debugging.\n *\n * See ::BrotliDecoderGetErrorCode and ::BROTLI_LAST_ERROR_CODE.\n */\ntypedef enum {\n#define BROTLI_COMMA_ ,\n#define BROTLI_ERROR_CODE_ENUM_ITEM_(PREFIX, NAME, CODE) \\\n BROTLI_DECODER ## PREFIX ## NAME = CODE\n BROTLI_DECODER_ERROR_CODES_LIST(BROTLI_ERROR_CODE_ENUM_ITEM_, BROTLI_COMMA_)\n} BrotliDecoderErrorCode;\n#undef BROTLI_ERROR_CODE_ENUM_ITEM_\n#undef BROTLI_COMMA_\n\n/**\n * The value of the last error code, negative integer.\n *\n * All other error code values are in the range from ::BROTLI_LAST_ERROR_CODE\n * to @c -1. There are also 4 other possible non-error codes @c 0 .. @c 3 in\n * ::BrotliDecoderErrorCode enumeration.\n */\n#define BROTLI_LAST_ERROR_CODE BROTLI_DECODER_ERROR_UNREACHABLE\n\n/** Options to be used with ::BrotliDecoderSetParameter. */\ntypedef enum BrotliDecoderParameter {\n /**\n * Disable \"canny\" ring buffer allocation strategy.\n *\n * Ring buffer is allocated according to window size, despite the real size of\n * the content.\n */\n BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION = 0,\n /**\n * Flag that determines if \"Large Window Brotli\" is used.\n */\n BROTLI_DECODER_PARAM_LARGE_WINDOW = 1\n} BrotliDecoderParameter;\n\n/**\n * Sets the specified parameter to the given decoder instance.\n *\n * @param state decoder instance\n * @param param parameter to set\n * @param value new parameter value\n * @returns ::BROTLI_FALSE if parameter is unrecognized, or value is invalid\n * @returns ::BROTLI_TRUE if value is accepted\n */\nBROTLI_DEC_API BROTLI_BOOL BrotliDecoderSetParameter(\n BrotliDecoderState* state, BrotliDecoderParameter param, uint32_t value);\n\n/**\n * Adds LZ77 prefix dictionary, adds or replaces built-in static dictionary and\n * transforms.\n *\n * Attached dictionary ownership is not transferred.\n * Data provided to this method should be kept accessible until\n * decoding is finished and decoder instance is destroyed.\n *\n * @note Dictionaries can NOT be attached after actual decoding is started.\n *\n * @param state decoder instance\n * @param type dictionary data format\n * @param data_size length of memory region pointed by @p data\n * @param data dictionary data in format corresponding to @p type\n * @returns ::BROTLI_FALSE if dictionary is corrupted,\n * or dictionary count limit is reached\n * @returns ::BROTLI_TRUE if dictionary is accepted / attached\n */\nBROTLI_DEC_API BROTLI_BOOL BrotliDecoderAttachDictionary(\n BrotliDecoderState* state, BrotliSharedDictionaryType type,\n size_t data_size, const uint8_t data[BROTLI_ARRAY_PARAM(data_size)]);\n\n/**\n * Creates an instance of ::BrotliDecoderState and initializes it.\n *\n * The instance can be used once for decoding and should then be destroyed with\n * ::BrotliDecoderDestroyInstance, it cannot be reused for a new decoding\n * session.\n *\n * @p alloc_func and @p free_func @b MUST be both zero or both non-zero. In the\n * case they are both zero, default memory allocators are used. @p opaque is\n * passed to @p alloc_func and @p free_func when they are called. @p free_func\n * has to return without doing anything when asked to free a NULL pointer.\n *\n * @param alloc_func custom memory allocation function\n * @param free_func custom memory free function\n * @param opaque custom memory manager handle\n * @returns @c 0 if instance can not be allocated or initialized\n * @returns pointer to initialized ::BrotliDecoderState otherwise\n */\nBROTLI_DEC_API BrotliDecoderState* BrotliDecoderCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\n\n/**\n * Deinitializes and frees ::BrotliDecoderState instance.\n *\n * @param state decoder instance to be cleaned up and deallocated\n */\nBROTLI_DEC_API void BrotliDecoderDestroyInstance(BrotliDecoderState* state);\n\n/**\n * Performs one-shot memory-to-memory decompression.\n *\n * Decompresses the data in @p encoded_buffer into @p decoded_buffer, and sets\n * @p *decoded_size to the decompressed length.\n *\n * @param encoded_size size of @p encoded_buffer\n * @param encoded_buffer compressed data buffer with at least @p encoded_size\n * addressable bytes\n * @param[in, out] decoded_size @b in: size of @p decoded_buffer; \\n\n * @b out: length of decompressed data written to\n * @p decoded_buffer\n * @param decoded_buffer decompressed data destination buffer\n * @returns ::BROTLI_DECODER_RESULT_ERROR if input is corrupted, memory\n * allocation failed, or @p decoded_buffer is not large enough;\n * @returns ::BROTLI_DECODER_RESULT_SUCCESS otherwise\n */\nBROTLI_DEC_API BrotliDecoderResult BrotliDecoderDecompress(\n size_t encoded_size,\n const uint8_t encoded_buffer[BROTLI_ARRAY_PARAM(encoded_size)],\n size_t* decoded_size,\n uint8_t decoded_buffer[BROTLI_ARRAY_PARAM(*decoded_size)]);\n\n/**\n * Decompresses the input stream to the output stream.\n *\n * The values @p *available_in and @p *available_out must specify the number of\n * bytes addressable at @p *next_in and @p *next_out respectively.\n * When @p *available_out is @c 0, @p next_out is allowed to be @c NULL.\n *\n * After each call, @p *available_in will be decremented by the amount of input\n * bytes consumed, and the @p *next_in pointer will be incremented by that\n * amount. Similarly, @p *available_out will be decremented by the amount of\n * output bytes written, and the @p *next_out pointer will be incremented by\n * that amount.\n *\n * @p total_out, if it is not a null-pointer, will be set to the number\n * of bytes decompressed since the last @p state initialization.\n *\n * @note Input is never overconsumed, so @p next_in and @p available_in could be\n * passed to the next consumer after decoding is complete.\n *\n * @param state decoder instance\n * @param[in, out] available_in @b in: amount of available input; \\n\n * @b out: amount of unused input\n * @param[in, out] next_in pointer to the next compressed byte\n * @param[in, out] available_out @b in: length of output buffer; \\n\n * @b out: remaining size of output buffer\n * @param[in, out] next_out output buffer cursor;\n * can be @c NULL if @p available_out is @c 0\n * @param[out] total_out number of bytes decompressed so far; can be @c NULL\n * @returns ::BROTLI_DECODER_RESULT_ERROR if input is corrupted, memory\n * allocation failed, arguments were invalid, etc.;\n * use ::BrotliDecoderGetErrorCode to get detailed error code\n * @returns ::BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT decoding is blocked until\n * more input data is provided\n * @returns ::BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT decoding is blocked until\n * more output space is provided\n * @returns ::BROTLI_DECODER_RESULT_SUCCESS decoding is finished, no more\n * input might be consumed and no more output will be produced\n */\nBROTLI_DEC_API BrotliDecoderResult BrotliDecoderDecompressStream(\n BrotliDecoderState* state, size_t* available_in, const uint8_t** next_in,\n size_t* available_out, uint8_t** next_out, size_t* total_out);\n\n/**\n * Checks if decoder has more output.\n *\n * @param state decoder instance\n * @returns ::BROTLI_TRUE, if decoder has some unconsumed output\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_DEC_API BROTLI_BOOL BrotliDecoderHasMoreOutput(\n const BrotliDecoderState* state);\n\n/**\n * Acquires pointer to internal output buffer.\n *\n * This method is used to make language bindings easier and more efficient:\n * -# push data to ::BrotliDecoderDecompressStream,\n * until ::BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT is reported\n * -# use ::BrotliDecoderTakeOutput to peek bytes and copy to language-specific\n * entity\n *\n * Also this could be useful if there is an output stream that is able to\n * consume all the provided data (e.g. when data is saved to file system).\n *\n * @attention After every call to ::BrotliDecoderTakeOutput @p *size bytes of\n * output are considered consumed for all consecutive calls to the\n * instance methods; returned pointer becomes invalidated as well.\n *\n * @note Decoder output is not guaranteed to be contiguous. This means that\n * after the size-unrestricted call to ::BrotliDecoderTakeOutput,\n * immediate next call to ::BrotliDecoderTakeOutput may return more data.\n *\n * @param state decoder instance\n * @param[in, out] size @b in: number of bytes caller is ready to take, @c 0 if\n * any amount could be handled; \\n\n * @b out: amount of data pointed by returned pointer and\n * considered consumed; \\n\n * out value is never greater than in value, unless it is @c 0\n * @returns pointer to output data\n */\nBROTLI_DEC_API const uint8_t* BrotliDecoderTakeOutput(\n BrotliDecoderState* state, size_t* size);\n\n/**\n * Checks if instance has already consumed input.\n *\n * Instance that returns ::BROTLI_FALSE is considered \"fresh\" and could be\n * reused.\n *\n * @param state decoder instance\n * @returns ::BROTLI_TRUE if decoder has already used some input bytes\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_DEC_API BROTLI_BOOL BrotliDecoderIsUsed(const BrotliDecoderState* state);\n\n/**\n * Checks if decoder instance reached the final state.\n *\n * @param state decoder instance\n * @returns ::BROTLI_TRUE if decoder is in a state where it reached the end of\n * the input and produced all of the output\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_DEC_API BROTLI_BOOL BrotliDecoderIsFinished(\n const BrotliDecoderState* state);\n\n/**\n * Acquires a detailed error code.\n *\n * Should be used only after ::BrotliDecoderDecompressStream returns\n * ::BROTLI_DECODER_RESULT_ERROR.\n *\n * See also ::BrotliDecoderErrorString\n *\n * @param state decoder instance\n * @returns last saved error code\n */\nBROTLI_DEC_API BrotliDecoderErrorCode BrotliDecoderGetErrorCode(\n const BrotliDecoderState* state);\n\n/**\n * Converts error code to a c-string.\n */\nBROTLI_DEC_API const char* BrotliDecoderErrorString(BrotliDecoderErrorCode c);\n\n/**\n * Gets a decoder library version.\n *\n * Look at BROTLI_MAKE_HEX_VERSION for more information.\n */\nBROTLI_DEC_API uint32_t BrotliDecoderVersion(void);\n\n/**\n * Callback to fire on metadata block start.\n *\n * After this callback is fired, if @p size is not @c 0, it is followed by\n * ::brotli_decoder_metadata_chunk_func as more metadata block contents become\n * accessible.\n *\n * @param opaque callback handle\n * @param size size of metadata block\n */\ntypedef void (*brotli_decoder_metadata_start_func)(void* opaque, size_t size);\n\n/**\n * Callback to fire on metadata block chunk becomes available.\n *\n * This function can be invoked multiple times per metadata block; block should\n * be considered finished when sum of @p size matches the announced metadata\n * block size. Chunks contents pointed by @p data are transient and shouln not\n * be accessed after leaving the callback.\n *\n * @param opaque callback handle\n * @param data pointer to metadata contents\n * @param size size of metadata block chunk, at least @c 1\n */\ntypedef void (*brotli_decoder_metadata_chunk_func)(void* opaque,\n const uint8_t* data,\n size_t size);\n\n/**\n * Sets callback for receiving metadata blocks.\n *\n * @param state decoder instance\n * @param start_func callback on metadata block start\n * @param chunk_func callback on metadata block chunk\n * @param opaque callback handle\n */\nBROTLI_DEC_API void BrotliDecoderSetMetadataCallbacks(\n BrotliDecoderState* state,\n brotli_decoder_metadata_start_func start_func,\n brotli_decoder_metadata_chunk_func chunk_func, void* opaque);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_DEC_DECODE_H_ */\n" }, { "path": "c/include/brotli/encode.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/**\n * @file\n * API for Brotli compression.\n */\n\n#ifndef BROTLI_ENC_ENCODE_H_\n#define BROTLI_ENC_ENCODE_H_\n\n#include \n#include \n#include /* IWYU pragma: export */\n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n/** Minimal value for ::BROTLI_PARAM_LGWIN parameter. */\n#define BROTLI_MIN_WINDOW_BITS 10\n/**\n * Maximal value for ::BROTLI_PARAM_LGWIN parameter.\n *\n * @note equal to @c BROTLI_MAX_DISTANCE_BITS constant.\n */\n#define BROTLI_MAX_WINDOW_BITS 24\n/**\n * Maximal value for ::BROTLI_PARAM_LGWIN parameter\n * in \"Large Window Brotli\" (32-bit).\n */\n#define BROTLI_LARGE_MAX_WINDOW_BITS 30\n/** Minimal value for ::BROTLI_PARAM_LGBLOCK parameter. */\n#define BROTLI_MIN_INPUT_BLOCK_BITS 16\n/** Maximal value for ::BROTLI_PARAM_LGBLOCK parameter. */\n#define BROTLI_MAX_INPUT_BLOCK_BITS 24\n/** Minimal value for ::BROTLI_PARAM_QUALITY parameter. */\n#define BROTLI_MIN_QUALITY 0\n/** Maximal value for ::BROTLI_PARAM_QUALITY parameter. */\n#define BROTLI_MAX_QUALITY 11\n\n/** Options for ::BROTLI_PARAM_MODE parameter. */\ntypedef enum BrotliEncoderMode {\n /**\n * Default compression mode.\n *\n * In this mode compressor does not know anything in advance about the\n * properties of the input.\n */\n BROTLI_MODE_GENERIC = 0,\n /** Compression mode for UTF-8 formatted text input. */\n BROTLI_MODE_TEXT = 1,\n /** Compression mode used in WOFF 2.0. */\n BROTLI_MODE_FONT = 2\n} BrotliEncoderMode;\n\n/** Default value for ::BROTLI_PARAM_QUALITY parameter. */\n#define BROTLI_DEFAULT_QUALITY 11\n/** Default value for ::BROTLI_PARAM_LGWIN parameter. */\n#define BROTLI_DEFAULT_WINDOW 22\n/** Default value for ::BROTLI_PARAM_MODE parameter. */\n#define BROTLI_DEFAULT_MODE BROTLI_MODE_GENERIC\n\n/** Operations that can be performed by streaming encoder. */\ntypedef enum BrotliEncoderOperation {\n /**\n * Process input.\n *\n * Encoder may postpone producing output, until it has processed enough input.\n */\n BROTLI_OPERATION_PROCESS = 0,\n /**\n * Produce output for all processed input.\n *\n * Actual flush is performed when input stream is depleted and there is enough\n * space in output stream. This means that client should repeat\n * ::BROTLI_OPERATION_FLUSH operation until @p available_in becomes @c 0, and\n * ::BrotliEncoderHasMoreOutput returns ::BROTLI_FALSE. If output is acquired\n * via ::BrotliEncoderTakeOutput, then operation should be repeated after\n * output buffer is drained.\n *\n * @warning Until flush is complete, client @b SHOULD @b NOT swap,\n * reduce or extend input stream.\n *\n * When flush is complete, output data will be sufficient for decoder to\n * reproduce all the given input.\n */\n BROTLI_OPERATION_FLUSH = 1,\n /**\n * Finalize the stream.\n *\n * Actual finalization is performed when input stream is depleted and there is\n * enough space in output stream. This means that client should repeat\n * ::BROTLI_OPERATION_FINISH operation until @p available_in becomes @c 0, and\n * ::BrotliEncoderHasMoreOutput returns ::BROTLI_FALSE. If output is acquired\n * via ::BrotliEncoderTakeOutput, then operation should be repeated after\n * output buffer is drained.\n *\n * @warning Until finalization is complete, client @b SHOULD @b NOT swap,\n * reduce or extend input stream.\n *\n * Helper function ::BrotliEncoderIsFinished checks if stream is finalized and\n * output fully dumped.\n *\n * Adding more input data to finalized stream is impossible.\n */\n BROTLI_OPERATION_FINISH = 2,\n /**\n * Emit metadata block to stream.\n *\n * Metadata is opaque to Brotli: neither encoder, nor decoder processes this\n * data or relies on it. It may be used to pass some extra information from\n * encoder client to decoder client without interfering with main data stream.\n *\n * @note Encoder may emit empty metadata blocks internally, to pad encoded\n * stream to byte boundary.\n *\n * @warning Until emitting metadata is complete client @b SHOULD @b NOT swap,\n * reduce or extend input stream.\n *\n * @warning The whole content of input buffer is considered to be the content\n * of metadata block. Do @b NOT @e append metadata to input stream,\n * before it is depleted with other operations.\n *\n * Stream is soft-flushed before metadata block is emitted. Metadata block\n * @b MUST be no longer than than 16MiB.\n */\n BROTLI_OPERATION_EMIT_METADATA = 3\n} BrotliEncoderOperation;\n\n/** Options to be used with ::BrotliEncoderSetParameter. */\ntypedef enum BrotliEncoderParameter {\n /**\n * Tune encoder for specific input.\n *\n * ::BrotliEncoderMode enumerates all available values.\n */\n BROTLI_PARAM_MODE = 0,\n /**\n * The main compression speed-density lever.\n *\n * The higher the quality, the slower the compression. Range is\n * from ::BROTLI_MIN_QUALITY to ::BROTLI_MAX_QUALITY.\n */\n BROTLI_PARAM_QUALITY = 1,\n /**\n * Recommended sliding LZ77 window size.\n *\n * Encoder may reduce this value, e.g. if input is much smaller than\n * window size.\n *\n * Window size is `(1 << value) - 16`.\n *\n * Range is from ::BROTLI_MIN_WINDOW_BITS to ::BROTLI_MAX_WINDOW_BITS.\n */\n BROTLI_PARAM_LGWIN = 2,\n /**\n * Recommended input block size.\n *\n * Encoder may reduce this value, e.g. if input is much smaller than input\n * block size.\n *\n * Range is from ::BROTLI_MIN_INPUT_BLOCK_BITS to\n * ::BROTLI_MAX_INPUT_BLOCK_BITS.\n *\n * @note Bigger input block size allows better compression, but consumes more\n * memory. \\n The rough formula of memory used for temporary input\n * storage is `3 << lgBlock`.\n */\n BROTLI_PARAM_LGBLOCK = 3,\n /**\n * Flag that affects usage of \"literal context modeling\" format feature.\n *\n * This flag is a \"decoding-speed vs compression ratio\" trade-off.\n */\n BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING = 4,\n /**\n * Estimated total input size for all ::BrotliEncoderCompressStream calls.\n *\n * The default value is 0, which means that the total input size is unknown.\n */\n BROTLI_PARAM_SIZE_HINT = 5,\n /**\n * Flag that determines if \"Large Window Brotli\" is used.\n */\n BROTLI_PARAM_LARGE_WINDOW = 6,\n /**\n * Recommended number of postfix bits (NPOSTFIX).\n *\n * Encoder may change this value.\n *\n * Range is from 0 to ::BROTLI_MAX_NPOSTFIX.\n */\n BROTLI_PARAM_NPOSTFIX = 7,\n /**\n * Recommended number of direct distance codes (NDIRECT).\n *\n * Encoder may change this value.\n *\n * Range is from 0 to (15 << NPOSTFIX) in steps of (1 << NPOSTFIX).\n */\n BROTLI_PARAM_NDIRECT = 8,\n /**\n * Number of bytes of input stream already processed by a different instance.\n *\n * @note It is important to configure all the encoder instances with same\n * parameters (except this one) in order to allow all the encoded parts\n * obey the same restrictions implied by header.\n *\n * If offset is not 0, then stream header is omitted.\n * In any case output start is byte aligned, so for proper streams stitching\n * \"predecessor\" stream must be flushed.\n *\n * Range is not artificially limited, but all the values greater or equal to\n * maximal window size have the same effect. Values greater than 2**30 are not\n * allowed.\n */\n BROTLI_PARAM_STREAM_OFFSET = 9\n} BrotliEncoderParameter;\n\n/**\n * Opaque structure that holds encoder state.\n *\n * Allocated and initialized with ::BrotliEncoderCreateInstance.\n * Cleaned up and deallocated with ::BrotliEncoderDestroyInstance.\n */\ntypedef struct BrotliEncoderStateStruct BrotliEncoderState;\n\n/**\n * Sets the specified parameter to the given encoder instance.\n *\n * @param state encoder instance\n * @param param parameter to set\n * @param value new parameter value\n * @returns ::BROTLI_FALSE if parameter is unrecognized, or value is invalid\n * @returns ::BROTLI_FALSE if value of parameter can not be changed at current\n * encoder state (e.g. when encoding is started, window size might be\n * already encoded and therefore it is impossible to change it)\n * @returns ::BROTLI_TRUE if value is accepted\n * @warning invalid values might be accepted in case they would not break\n * encoding process.\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderSetParameter(\n BrotliEncoderState* state, BrotliEncoderParameter param, uint32_t value);\n\n/**\n * Creates an instance of ::BrotliEncoderState and initializes it.\n *\n * @p alloc_func and @p free_func @b MUST be both zero or both non-zero. In the\n * case they are both zero, default memory allocators are used. @p opaque is\n * passed to @p alloc_func and @p free_func when they are called. @p free_func\n * has to return without doing anything when asked to free a NULL pointer.\n *\n * @param alloc_func custom memory allocation function\n * @param free_func custom memory free function\n * @param opaque custom memory manager handle\n * @returns @c 0 if instance can not be allocated or initialized\n * @returns pointer to initialized ::BrotliEncoderState otherwise\n */\nBROTLI_ENC_API BrotliEncoderState* BrotliEncoderCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\n\n/**\n * Deinitializes and frees ::BrotliEncoderState instance.\n *\n * @param state decoder instance to be cleaned up and deallocated\n */\nBROTLI_ENC_API void BrotliEncoderDestroyInstance(BrotliEncoderState* state);\n\n/* Opaque type for pointer to different possible internal structures containing\n dictionary prepared for the encoder */\ntypedef struct BrotliEncoderPreparedDictionaryStruct\n BrotliEncoderPreparedDictionary;\n\n/**\n * Prepares a shared dictionary from the given file format for the encoder.\n *\n * @p alloc_func and @p free_func @b MUST be both zero or both non-zero. In the\n * case they are both zero, default memory allocators are used. @p opaque is\n * passed to @p alloc_func and @p free_func when they are called. @p free_func\n * has to return without doing anything when asked to free a NULL pointer.\n *\n * @warning Created instance is \"lean\"; it does not contain copy of @p data,\n * rather it contains only pointer to it; therefore,\n * @p data @b MUST outlive the created instance.\n *\n * @param type type of dictionary stored in data\n * @param data_size size of @p data buffer\n * @param data pointer to the dictionary data\n * @param quality the maximum Brotli quality to prepare the dictionary for,\n * use BROTLI_MAX_QUALITY by default\n * @param alloc_func custom memory allocation function\n * @param free_func custom memory free function\n * @param opaque custom memory manager handle\n */\nBROTLI_ENC_API BrotliEncoderPreparedDictionary*\nBrotliEncoderPrepareDictionary(BrotliSharedDictionaryType type,\n size_t data_size, const uint8_t data[BROTLI_ARRAY_PARAM(data_size)],\n int quality,\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\n\nBROTLI_ENC_API void BrotliEncoderDestroyPreparedDictionary(\n BrotliEncoderPreparedDictionary* dictionary);\n\n/**\n * Attaches a prepared dictionary of any type to the encoder. Can be used\n * multiple times to attach multiple dictionaries. The dictionary type was\n * determined by BrotliEncoderPrepareDictionary. Multiple raw prefix\n * dictionaries and/or max 1 serialized dictionary with custom words can be\n * attached.\n *\n * @returns ::BROTLI_FALSE in case of error\n * @returns ::BROTLI_TRUE otherwise\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderAttachPreparedDictionary(\n BrotliEncoderState* state,\n const BrotliEncoderPreparedDictionary* dictionary);\n\n/**\n * Calculates the output size bound for the given @p input_size.\n *\n * @warning Result is only valid if quality is at least @c 2 and, in\n * case ::BrotliEncoderCompressStream was used, no flushes\n * (::BROTLI_OPERATION_FLUSH) were performed.\n *\n * @param input_size size of projected input\n * @returns @c 0 if result does not fit @c size_t\n */\nBROTLI_ENC_API size_t BrotliEncoderMaxCompressedSize(size_t input_size);\n\n/**\n * Performs one-shot memory-to-memory compression.\n *\n * Compresses the data in @p input_buffer into @p encoded_buffer, and sets\n * @p *encoded_size to the compressed length.\n *\n * @note If ::BrotliEncoderMaxCompressedSize(@p input_size) returns non-zero\n * value, then output is guaranteed to be no longer than that.\n *\n * @note If @p lgwin is greater than ::BROTLI_MAX_WINDOW_BITS then resulting\n * stream might be incompatible with RFC 7932; to decode such streams,\n * decoder should be configured with\n * ::BROTLI_DECODER_PARAM_LARGE_WINDOW = @c 1\n *\n * @param quality quality parameter value, e.g. ::BROTLI_DEFAULT_QUALITY\n * @param lgwin lgwin parameter value, e.g. ::BROTLI_DEFAULT_WINDOW\n * @param mode mode parameter value, e.g. ::BROTLI_DEFAULT_MODE\n * @param input_size size of @p input_buffer\n * @param input_buffer input data buffer with at least @p input_size\n * addressable bytes\n * @param[in, out] encoded_size @b in: size of @p encoded_buffer; \\n\n * @b out: length of compressed data written to\n * @p encoded_buffer, or @c 0 if compression fails\n * @param encoded_buffer compressed data destination buffer\n * @returns ::BROTLI_FALSE in case of compression error\n * @returns ::BROTLI_FALSE if output buffer is too small\n * @returns ::BROTLI_TRUE otherwise\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderCompress(\n int quality, int lgwin, BrotliEncoderMode mode, size_t input_size,\n const uint8_t input_buffer[BROTLI_ARRAY_PARAM(input_size)],\n size_t* encoded_size,\n uint8_t encoded_buffer[BROTLI_ARRAY_PARAM(*encoded_size)]);\n\n/**\n * Compresses input stream to output stream.\n *\n * The values @p *available_in and @p *available_out must specify the number of\n * bytes addressable at @p *next_in and @p *next_out respectively.\n * When @p *available_out is @c 0, @p next_out is allowed to be @c NULL.\n *\n * After each call, @p *available_in will be decremented by the amount of input\n * bytes consumed, and the @p *next_in pointer will be incremented by that\n * amount. Similarly, @p *available_out will be decremented by the amount of\n * output bytes written, and the @p *next_out pointer will be incremented by\n * that amount.\n *\n * @p total_out, if it is not a null-pointer, will be set to the number\n * of bytes compressed since the last @p state initialization.\n *\n *\n *\n * Internally workflow consists of 3 tasks:\n * -# (optionally) copy input data to internal buffer\n * -# actually compress data and (optionally) store it to internal buffer\n * -# (optionally) copy compressed bytes from internal buffer to output stream\n *\n * Whenever all 3 tasks can't move forward anymore, or error occurs, this\n * method returns the control flow to caller.\n *\n * @p op is used to perform flush, finish the stream, or inject metadata block.\n * See ::BrotliEncoderOperation for more information.\n *\n * Flushing the stream means forcing encoding of all input passed to encoder and\n * completing the current output block, so it could be fully decoded by stream\n * decoder. To perform flush set @p op to ::BROTLI_OPERATION_FLUSH.\n * Under some circumstances (e.g. lack of output stream capacity) this operation\n * would require several calls to ::BrotliEncoderCompressStream. The method must\n * be called again until both input stream is depleted and encoder has no more\n * output (see ::BrotliEncoderHasMoreOutput) after the method is called.\n *\n * Finishing the stream means encoding of all input passed to encoder and\n * adding specific \"final\" marks, so stream decoder could determine that stream\n * is complete. To perform finish set @p op to ::BROTLI_OPERATION_FINISH.\n * Under some circumstances (e.g. lack of output stream capacity) this operation\n * would require several calls to ::BrotliEncoderCompressStream. The method must\n * be called again until both input stream is depleted and encoder has no more\n * output (see ::BrotliEncoderHasMoreOutput) after the method is called.\n *\n * @warning When flushing and finishing, @p op should not change until operation\n * is complete; input stream should not be swapped, reduced or\n * extended as well.\n *\n * @param state encoder instance\n * @param op requested operation\n * @param[in, out] available_in @b in: amount of available input; \\n\n * @b out: amount of unused input\n * @param[in, out] next_in pointer to the next input byte\n * @param[in, out] available_out @b in: length of output buffer; \\n\n * @b out: remaining size of output buffer\n * @param[in, out] next_out compressed output buffer cursor;\n * can be @c NULL if @p available_out is @c 0\n * @param[out] total_out number of bytes produced so far; can be @c NULL\n * @returns ::BROTLI_FALSE if there was an error\n * @returns ::BROTLI_TRUE otherwise\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderCompressStream(\n BrotliEncoderState* state, BrotliEncoderOperation op, size_t* available_in,\n const uint8_t** next_in, size_t* available_out, uint8_t** next_out,\n size_t* total_out);\n\n/**\n * Checks if encoder instance reached the final state.\n *\n * @param state encoder instance\n * @returns ::BROTLI_TRUE if encoder is in a state where it reached the end of\n * the input and produced all of the output\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderIsFinished(BrotliEncoderState* state);\n\n/**\n * Checks if encoder has more output.\n *\n * @param state encoder instance\n * @returns ::BROTLI_TRUE, if encoder has some unconsumed output\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_ENC_API BROTLI_BOOL BrotliEncoderHasMoreOutput(\n BrotliEncoderState* state);\n\n/**\n * Acquires pointer to internal output buffer.\n *\n * This method is used to make language bindings easier and more efficient:\n * -# push data to ::BrotliEncoderCompressStream,\n * until ::BrotliEncoderHasMoreOutput returns BROTLI_TRUE\n * -# use ::BrotliEncoderTakeOutput to peek bytes and copy to language-specific\n * entity\n *\n * Also this could be useful if there is an output stream that is able to\n * consume all the provided data (e.g. when data is saved to file system).\n *\n * @attention After every call to ::BrotliEncoderTakeOutput @p *size bytes of\n * output are considered consumed for all consecutive calls to the\n * instance methods; returned pointer becomes invalidated as well.\n *\n * @note Encoder output is not guaranteed to be contiguous. This means that\n * after the size-unrestricted call to ::BrotliEncoderTakeOutput,\n * immediate next call to ::BrotliEncoderTakeOutput may return more data.\n *\n * @param state encoder instance\n * @param[in, out] size @b in: number of bytes caller is ready to take, @c 0 if\n * any amount could be handled; \\n\n * @b out: amount of data pointed by returned pointer and\n * considered consumed; \\n\n * out value is never greater than in value, unless it is @c 0\n * @returns pointer to output data\n */\nBROTLI_ENC_API const uint8_t* BrotliEncoderTakeOutput(\n BrotliEncoderState* state, size_t* size);\n\n/* Returns the estimated peak memory usage (in bytes) of the BrotliCompress()\n function, not counting the memory needed for the input and output. */\nBROTLI_ENC_EXTRA_API size_t BrotliEncoderEstimatePeakMemoryUsage(\n int quality, int lgwin, size_t input_size);\n/* Returns 0 if dictionary is not valid; otherwise returns allocation size. */\nBROTLI_ENC_EXTRA_API size_t BrotliEncoderGetPreparedDictionarySize(\n const BrotliEncoderPreparedDictionary* dictionary);\n\n/**\n * Gets an encoder library version.\n *\n * Look at BROTLI_MAKE_HEX_VERSION for more information.\n */\nBROTLI_ENC_API uint32_t BrotliEncoderVersion(void);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_ENC_ENCODE_H_ */\n" }, { "path": "c/include/brotli/port.h", "content": "/* Copyright 2016 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Macros for compiler / platform specific API declarations. */\n\n#ifndef BROTLI_COMMON_PORT_H_\n#define BROTLI_COMMON_PORT_H_\n\n/* The following macros were borrowed from https://github.com/nemequ/hedley\n * with permission of original author - Evan Nemerson */\n\n/* >>> >>> >>> hedley macros */\n\n#define BROTLI_MAKE_VERSION(major, minor, revision) \\\n (((major) * 1000000) + ((minor) * 1000) + (revision))\n\n#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)\n#define BROTLI_GNUC_VERSION \\\n BROTLI_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)\n#elif defined(__GNUC__)\n#define BROTLI_GNUC_VERSION BROTLI_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, 0)\n#endif\n\n#if defined(BROTLI_GNUC_VERSION)\n#define BROTLI_GNUC_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_GNUC_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_GNUC_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000)\n#define BROTLI_MSVC_VERSION \\\n BROTLI_MAKE_VERSION((_MSC_FULL_VER / 10000000), \\\n (_MSC_FULL_VER % 10000000) / 100000, \\\n (_MSC_FULL_VER % 100000) / 100)\n#elif defined(_MSC_FULL_VER)\n#define BROTLI_MSVC_VERSION \\\n BROTLI_MAKE_VERSION((_MSC_FULL_VER / 1000000), \\\n (_MSC_FULL_VER % 1000000) / 10000, \\\n (_MSC_FULL_VER % 10000) / 10)\n#elif defined(_MSC_VER)\n#define BROTLI_MSVC_VERSION \\\n BROTLI_MAKE_VERSION(_MSC_VER / 100, _MSC_VER % 100, 0)\n#endif\n\n#if !defined(_MSC_VER)\n#define BROTLI_MSVC_VERSION_CHECK(major, minor, patch) (0)\n#elif defined(_MSC_VER) && (_MSC_VER >= 1400)\n#define BROTLI_MSVC_VERSION_CHECK(major, minor, patch) \\\n (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))\n#elif defined(_MSC_VER) && (_MSC_VER >= 1200)\n#define BROTLI_MSVC_VERSION_CHECK(major, minor, patch) \\\n (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))\n#else\n#define BROTLI_MSVC_VERSION_CHECK(major, minor, patch) \\\n (_MSC_VER >= ((major * 100) + (minor)))\n#endif\n\n#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE)\n#define BROTLI_INTEL_VERSION \\\n BROTLI_MAKE_VERSION(__INTEL_COMPILER / 100, \\\n __INTEL_COMPILER % 100, \\\n __INTEL_COMPILER_UPDATE)\n#elif defined(__INTEL_COMPILER)\n#define BROTLI_INTEL_VERSION \\\n BROTLI_MAKE_VERSION(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)\n#endif\n\n#if defined(BROTLI_INTEL_VERSION)\n#define BROTLI_INTEL_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_INTEL_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_INTEL_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__PGI) && \\\n defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)\n#define BROTLI_PGI_VERSION \\\n BROTLI_MAKE_VERSION(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)\n#endif\n\n#if defined(BROTLI_PGI_VERSION)\n#define BROTLI_PGI_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_PGI_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_PGI_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)\n#define BROTLI_SUNPRO_VERSION \\\n BROTLI_MAKE_VERSION( \\\n (((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), \\\n (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), \\\n (__SUNPRO_C & 0xf) * 10)\n#elif defined(__SUNPRO_C)\n#define BROTLI_SUNPRO_VERSION \\\n BROTLI_MAKE_VERSION((__SUNPRO_C >> 8) & 0xf, \\\n (__SUNPRO_C >> 4) & 0xf, \\\n (__SUNPRO_C) & 0xf)\n#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)\n#define BROTLI_SUNPRO_VERSION \\\n BROTLI_MAKE_VERSION( \\\n (((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), \\\n (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), \\\n (__SUNPRO_CC & 0xf) * 10)\n#elif defined(__SUNPRO_CC)\n#define BROTLI_SUNPRO_VERSION \\\n BROTLI_MAKE_VERSION((__SUNPRO_CC >> 8) & 0xf, \\\n (__SUNPRO_CC >> 4) & 0xf, \\\n (__SUNPRO_CC) & 0xf)\n#endif\n\n#if defined(BROTLI_SUNPRO_VERSION)\n#define BROTLI_SUNPRO_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_SUNPRO_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_SUNPRO_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)\n#define BROTLI_ARM_VERSION \\\n BROTLI_MAKE_VERSION((__ARMCOMPILER_VERSION / 1000000), \\\n (__ARMCOMPILER_VERSION % 1000000) / 10000, \\\n (__ARMCOMPILER_VERSION % 10000) / 100)\n#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)\n#define BROTLI_ARM_VERSION \\\n BROTLI_MAKE_VERSION((__ARMCC_VERSION / 1000000), \\\n (__ARMCC_VERSION % 1000000) / 10000, \\\n (__ARMCC_VERSION % 10000) / 100)\n#endif\n\n#if defined(BROTLI_ARM_VERSION)\n#define BROTLI_ARM_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_ARM_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_ARM_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__ibmxl__)\n#define BROTLI_IBM_VERSION \\\n BROTLI_MAKE_VERSION(__ibmxl_version__, \\\n __ibmxl_release__, \\\n __ibmxl_modification__)\n#elif defined(__xlC__) && defined(__xlC_ver__)\n#define BROTLI_IBM_VERSION \\\n BROTLI_MAKE_VERSION(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)\n#elif defined(__xlC__)\n#define BROTLI_IBM_VERSION BROTLI_MAKE_VERSION(__xlC__ >> 8, __xlC__ & 0xff, 0)\n#endif\n\n#if defined(BROTLI_IBM_VERSION)\n#define BROTLI_IBM_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_IBM_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_IBM_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__TI_COMPILER_VERSION__)\n#define BROTLI_TI_VERSION \\\n BROTLI_MAKE_VERSION((__TI_COMPILER_VERSION__ / 1000000), \\\n (__TI_COMPILER_VERSION__ % 1000000) / 1000, \\\n (__TI_COMPILER_VERSION__ % 1000))\n#endif\n\n#if defined(BROTLI_TI_VERSION)\n#define BROTLI_TI_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_TI_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_TI_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__IAR_SYSTEMS_ICC__)\n#if __VER__ > 1000\n#define BROTLI_IAR_VERSION \\\n BROTLI_MAKE_VERSION((__VER__ / 1000000), \\\n (__VER__ / 1000) % 1000, \\\n (__VER__ % 1000))\n#else\n#define BROTLI_IAR_VERSION BROTLI_MAKE_VERSION(VER / 100, __VER__ % 100, 0)\n#endif\n#endif\n\n#if defined(BROTLI_IAR_VERSION)\n#define BROTLI_IAR_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_IAR_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_IAR_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__TINYC__)\n#define BROTLI_TINYC_VERSION \\\n BROTLI_MAKE_VERSION(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)\n#endif\n\n#if defined(BROTLI_TINYC_VERSION)\n#define BROTLI_TINYC_VERSION_CHECK(major, minor, patch) \\\n (BROTLI_TINYC_VERSION >= BROTLI_MAKE_VERSION(major, minor, patch))\n#else\n#define BROTLI_TINYC_VERSION_CHECK(major, minor, patch) (0)\n#endif\n\n#if defined(__has_attribute)\n#define BROTLI_GNUC_HAS_ATTRIBUTE(attribute, major, minor, patch) \\\n __has_attribute(attribute)\n#else\n#define BROTLI_GNUC_HAS_ATTRIBUTE(attribute, major, minor, patch) \\\n BROTLI_GNUC_VERSION_CHECK(major, minor, patch)\n#endif\n\n#if defined(__has_builtin)\n#define BROTLI_GNUC_HAS_BUILTIN(builtin, major, minor, patch) \\\n __has_builtin(builtin)\n#else\n#define BROTLI_GNUC_HAS_BUILTIN(builtin, major, minor, patch) \\\n BROTLI_GNUC_VERSION_CHECK(major, minor, patch)\n#endif\n\n#if defined(__has_feature)\n#define BROTLI_HAS_FEATURE(feature) __has_feature(feature)\n#else\n#define BROTLI_HAS_FEATURE(feature) (0)\n#endif\n\n#if defined(_WIN32) || defined(__CYGWIN__)\n#define BROTLI_PUBLIC\n#elif BROTLI_GNUC_VERSION_CHECK(3, 3, 0) || \\\n BROTLI_TI_VERSION_CHECK(8, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(13, 1, 0) || \\\n BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \\\n (BROTLI_TI_VERSION_CHECK(7, 3, 0) && \\\n defined(__TI_GNU_ATTRIBUTE_SUPPORT__) && defined(__TI_EABI__))\n#define BROTLI_PUBLIC __attribute__ ((visibility (\"default\")))\n#else\n#define BROTLI_PUBLIC\n#endif\n\n#if defined(_WIN32) || defined(__CYGWIN__)\n#define BROTLI_INTERNAL\n#elif BROTLI_GNUC_VERSION_CHECK(3, 3, 0) || \\\n BROTLI_TI_VERSION_CHECK(8, 0, 0) || \\\n BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \\\n BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \\\n BROTLI_IBM_VERSION_CHECK(13, 1, 0) || \\\n BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \\\n (BROTLI_TI_VERSION_CHECK(7, 3, 0) && \\\n defined(__TI_GNU_ATTRIBUTE_SUPPORT__) && defined(__TI_EABI__))\n#define BROTLI_INTERNAL __attribute__ ((visibility (\"hidden\")))\n#else\n#define BROTLI_INTERNAL\n#endif\n\n#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \\\n !defined(__STDC_NO_VLA__) && !defined(__cplusplus) && \\\n !defined(__PGI) && !defined(__PGIC__) && !defined(__TINYC__) && \\\n !defined(__clang__)\n#define BROTLI_ARRAY_PARAM(name) (name)\n#else\n#define BROTLI_ARRAY_PARAM(name)\n#endif\n\n/* <<< <<< <<< end of hedley macros. */\n\n#if defined(BROTLI_SHARED_COMPILATION)\n#if defined(_WIN32)\n#if defined(BROTLICOMMON_SHARED_COMPILATION)\n#define BROTLI_COMMON_API __declspec(dllexport)\n#else /* !BROTLICOMMON_SHARED_COMPILATION */\n#define BROTLI_COMMON_API __declspec(dllimport)\n#endif /* BROTLICOMMON_SHARED_COMPILATION */\n#if defined(BROTLIDEC_SHARED_COMPILATION)\n#define BROTLI_DEC_API __declspec(dllexport)\n#else /* !BROTLIDEC_SHARED_COMPILATION */\n#define BROTLI_DEC_API __declspec(dllimport)\n#endif /* BROTLIDEC_SHARED_COMPILATION */\n#if defined(BROTLIENC_SHARED_COMPILATION)\n#define BROTLI_ENC_API __declspec(dllexport)\n#else /* !BROTLIENC_SHARED_COMPILATION */\n#define BROTLI_ENC_API __declspec(dllimport)\n#endif /* BROTLIENC_SHARED_COMPILATION */\n#else /* !_WIN32 */\n#define BROTLI_COMMON_API BROTLI_PUBLIC\n#define BROTLI_DEC_API BROTLI_PUBLIC\n#define BROTLI_ENC_API BROTLI_PUBLIC\n#endif /* _WIN32 */\n#else /* BROTLI_SHARED_COMPILATION */\n#define BROTLI_COMMON_API\n#define BROTLI_DEC_API\n#define BROTLI_ENC_API\n#endif\n\n#if defined(BROTLI_BUILD_ENC_EXTRA_API)\n#define BROTLI_ENC_EXTRA_API BROTLI_ENC_API\n#else\n#define BROTLI_ENC_EXTRA_API BROTLI_INTERNAL\n#endif\n\n#endif /* BROTLI_COMMON_PORT_H_ */\n" }, { "path": "c/include/brotli/shared_dictionary.h", "content": "/* Copyright 2017 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* (Opaque) Shared Dictionary definition and utilities. */\n\n#ifndef BROTLI_COMMON_SHARED_DICTIONARY_H_\n#define BROTLI_COMMON_SHARED_DICTIONARY_H_\n\n#include \n#include \n\n#if defined(__cplusplus) || defined(c_plusplus)\nextern \"C\" {\n#endif\n\n#define SHARED_BROTLI_MIN_DICTIONARY_WORD_LENGTH 4\n#define SHARED_BROTLI_MAX_DICTIONARY_WORD_LENGTH 31\n#define SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS 64\n#define SHARED_BROTLI_MAX_COMPOUND_DICTS 15\n\n/**\n * Opaque structure that holds shared dictionary data.\n *\n * Allocated and initialized with ::BrotliSharedDictionaryCreateInstance.\n * Cleaned up and deallocated with ::BrotliSharedDictionaryDestroyInstance.\n */\ntypedef struct BrotliSharedDictionaryStruct BrotliSharedDictionary;\n\n/**\n * Input data type for ::BrotliSharedDictionaryAttach.\n */\ntypedef enum BrotliSharedDictionaryType {\n /** Raw LZ77 prefix dictionary. */\n BROTLI_SHARED_DICTIONARY_RAW = 0,\n /** Serialized shared dictionary.\n *\n * DO NOT USE: methods accepting this value will fail.\n */\n BROTLI_SHARED_DICTIONARY_SERIALIZED = 1\n} BrotliSharedDictionaryType;\n\n/**\n * Creates an instance of ::BrotliSharedDictionary.\n *\n * Fresh instance has default word dictionary and transforms\n * and no LZ77 prefix dictionary.\n *\n * @p alloc_func and @p free_func @b MUST be both zero or both non-zero. In the\n * case they are both zero, default memory allocators are used. @p opaque is\n * passed to @p alloc_func and @p free_func when they are called. @p free_func\n * has to return without doing anything when asked to free a NULL pointer.\n *\n * @param alloc_func custom memory allocation function\n * @param free_func custom memory free function\n * @param opaque custom memory manager handle\n * @returns @c 0 if instance can not be allocated or initialized\n * @returns pointer to initialized ::BrotliSharedDictionary otherwise\n */\nBROTLI_COMMON_API BrotliSharedDictionary* BrotliSharedDictionaryCreateInstance(\n brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque);\n\n/**\n * Deinitializes and frees ::BrotliSharedDictionary instance.\n *\n * @param dict shared dictionary instance to be cleaned up and deallocated\n */\nBROTLI_COMMON_API void BrotliSharedDictionaryDestroyInstance(\n BrotliSharedDictionary* dict);\n\n/**\n * Attaches dictionary to a given instance of ::BrotliSharedDictionary.\n *\n * Dictionary to be attached is represented in a serialized format as a region\n * of memory.\n *\n * Provided data it partially referenced by a resulting (compound) dictionary,\n * and should be kept untouched, while at least one compound dictionary uses it.\n * This way memory overhead is kept minimal by the cost of additional resource\n * management.\n *\n * @param dict dictionary to extend\n * @param type type of dictionary to attach\n * @param data_size size of @p data\n * @param data serialized dictionary of type @p type, with at least @p data_size\n * addressable bytes\n * @returns ::BROTLI_TRUE if provided dictionary is successfully attached\n * @returns ::BROTLI_FALSE otherwise\n */\nBROTLI_COMMON_API BROTLI_BOOL BrotliSharedDictionaryAttach(\n BrotliSharedDictionary* dict, BrotliSharedDictionaryType type,\n size_t data_size, const uint8_t data[BROTLI_ARRAY_PARAM(data_size)]);\n\n#if defined(__cplusplus) || defined(c_plusplus)\n} /* extern \"C\" */\n#endif\n\n#endif /* BROTLI_COMMON_SHARED_DICTIONARY_H_ */\n" }, { "path": "c/include/brotli/types.h", "content": "/* Copyright 2013 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/**\n * @file\n * Common types used in decoder and encoder API.\n */\n\n#ifndef BROTLI_COMMON_TYPES_H_\n#define BROTLI_COMMON_TYPES_H_\n\n#include /* IWYU pragma: export */\n\n#if defined(_MSC_VER) && (_MSC_VER < 1600)\ntypedef __int8 int8_t;\ntypedef unsigned __int8 uint8_t;\ntypedef __int16 int16_t;\ntypedef unsigned __int16 uint16_t;\ntypedef __int32 int32_t;\ntypedef unsigned __int32 uint32_t;\ntypedef unsigned __int64 uint64_t;\ntypedef __int64 int64_t;\n#else\n#include /* IWYU pragma: export */\n#endif /* defined(_MSC_VER) && (_MSC_VER < 1600) */\n\n/**\n * A portable @c bool replacement.\n *\n * ::BROTLI_BOOL is a \"documentation\" type: actually it is @c int, but in API it\n * denotes a type, whose only values are ::BROTLI_TRUE and ::BROTLI_FALSE.\n *\n * ::BROTLI_BOOL values passed to Brotli should either be ::BROTLI_TRUE or\n * ::BROTLI_FALSE, or be a result of ::TO_BROTLI_BOOL macros.\n *\n * ::BROTLI_BOOL values returned by Brotli should not be tested for equality\n * with @c true, @c false, ::BROTLI_TRUE, ::BROTLI_FALSE, but rather should be\n * evaluated, for example: @code{.cpp}\n * if (SomeBrotliFunction(encoder, BROTLI_TRUE) &&\n * !OtherBrotliFunction(decoder, BROTLI_FALSE)) {\n * bool x = !!YetAnotherBrotliFunction(encoder, TO_BROLTI_BOOL(2 * 2 == 4));\n * DoSomething(x);\n * }\n * @endcode\n */\n#define BROTLI_BOOL int\n/** Portable @c true replacement. */\n#define BROTLI_TRUE 1\n/** Portable @c false replacement. */\n#define BROTLI_FALSE 0\n/** @c bool to ::BROTLI_BOOL conversion macros. */\n#define TO_BROTLI_BOOL(X) (!!(X) ? BROTLI_TRUE : BROTLI_FALSE)\n\n#define BROTLI_MAKE_UINT64_T(high, low) ((((uint64_t)(high)) << 32) | low)\n\n#define BROTLI_UINT32_MAX (~((uint32_t)0))\n#define BROTLI_SIZE_MAX (~((size_t)0))\n\n/**\n * Allocating function pointer type.\n *\n * @param opaque custom memory manager handle provided by client\n * @param size requested memory region size; can not be @c 0\n * @returns @c 0 in the case of failure\n * @returns a valid pointer to a memory region of at least @p size bytes\n * long otherwise\n */\ntypedef void* (*brotli_alloc_func)(void* opaque, size_t size);\n\n/**\n * Deallocating function pointer type.\n *\n * This function @b SHOULD do nothing if @p address is @c 0.\n *\n * @param opaque custom memory manager handle provided by client\n * @param address memory region pointer returned by ::brotli_alloc_func, or @c 0\n */\ntypedef void (*brotli_free_func)(void* opaque, void* address);\n\n#endif /* BROTLI_COMMON_TYPES_H_ */\n" }, { "path": "c/tools/brotli.c", "content": "/* Copyright 2014 Google Inc. All Rights Reserved.\n\n Distributed under MIT license.\n See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\n*/\n\n/* Command line interface for Brotli library. */\n\n/* Mute strerror/strcpy warnings. */\n#include \n#if !defined(_CRT_SECURE_NO_WARNINGS)\n#define _CRT_SECURE_NO_WARNINGS\n#endif\n\n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n\n#include \n#include \"../common/constants.h\"\n#include \"../common/version.h\"\n#include \n#include \n\n#if defined(_WIN32)\n#include \n#include \n#include \n\n#define MAKE_BINARY(FILENO) (_setmode((FILENO), _O_BINARY), (FILENO))\n\n#if !defined(__MINGW32__)\n#define STDIN_FILENO _fileno(stdin)\n#define STDOUT_FILENO _fileno(stdout)\n#define S_IRUSR S_IREAD\n#define S_IWUSR S_IWRITE\n#endif\n\n#define fdopen _fdopen\n#define isatty _isatty\n#define unlink _unlink\n#define utimbuf _utimbuf\n#define utime _utime\n\n#define fopen ms_fopen\n#define open ms_open\n\n#define chmod(F, P) (0)\n#define chown(F, O, G) (0)\n\n#if defined(_MSC_VER) && (_MSC_VER >= 1400)\n#define fseek _fseeki64\n#define ftell _ftelli64\n#endif\n\nstatic FILE* ms_fopen(const char* filename, const char* mode) {\n FILE* result = 0;\n fopen_s(&result, filename, mode);\n return result;\n}\n\nstatic int ms_open(const char* filename, int oflag, int pmode) {\n int result = -1;\n _sopen_s(&result, filename, oflag | O_BINARY, _SH_DENYNO, pmode);\n return result;\n}\n#else /* !defined(_WIN32) */\n#include \n#include \n#define MAKE_BINARY(FILENO) (FILENO)\n#endif /* defined(_WIN32) */\n\n#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200809L)\n#define HAVE_UTIMENSAT 1\n#elif defined(_ATFILE_SOURCE)\n#define HAVE_UTIMENSAT 1\n#else\n#define HAVE_UTIMENSAT 0\n#endif\n\n#if HAVE_UTIMENSAT\n#if defined(__APPLE__)\n#define ATIME_NSEC(S) ((S)->st_atimespec.tv_nsec)\n#define MTIME_NSEC(S) ((S)->st_mtimespec.tv_nsec)\n#else /* defined(__APPLE__) */\n#define ATIME_NSEC(S) ((S)->st_atim.tv_nsec)\n#define MTIME_NSEC(S) ((S)->st_mtim.tv_nsec)\n#endif\n#endif /* HAVE_UTIMENSAT */\n\ntypedef enum {\n COMMAND_COMPRESS,\n COMMAND_DECOMPRESS,\n COMMAND_HELP,\n COMMAND_INVALID,\n COMMAND_TEST_INTEGRITY,\n COMMAND_NOOP,\n COMMAND_VERSION\n} Command;\n\ntypedef enum {\n COMMENT_INIT,\n COMMENT_READ,\n COMMENT_OK,\n COMMENT_BAD,\n} CommentState;\n\n#define DEFAULT_LGWIN 24\n#define DEFAULT_SUFFIX \".br\"\n#define MAX_OPTIONS 24\n#define MAX_COMMENT_LEN 80\n\ntypedef struct {\n /* Parameters */\n int quality;\n int lgwin;\n int verbosity;\n BROTLI_BOOL force_overwrite;\n BROTLI_BOOL junk_source;\n BROTLI_BOOL reject_uncompressible;\n BROTLI_BOOL copy_stat;\n BROTLI_BOOL write_to_stdout;\n BROTLI_BOOL test_integrity;\n BROTLI_BOOL decompress;\n BROTLI_BOOL large_window;\n BROTLI_BOOL allow_concatenated;\n const char* output_path;\n const char* dictionary_path;\n const char* suffix;\n uint8_t comment[MAX_COMMENT_LEN];\n size_t comment_len;\n size_t comment_pos;\n CommentState comment_state;\n int not_input_indices[MAX_OPTIONS];\n size_t longest_path_len;\n size_t input_count;\n\n /* Inner state */\n int argc;\n char** argv;\n uint8_t* dictionary;\n size_t dictionary_size;\n BrotliEncoderPreparedDictionary* prepared_dictionary;\n BrotliDecoderState* decoder;\n char* modified_path; /* Storage for path with appended / cut suffix */\n int iterator;\n int ignore;\n BROTLI_BOOL iterator_error;\n uint8_t* buffer;\n uint8_t* input;\n uint8_t* output;\n const char* current_input_path;\n const char* current_output_path;\n int64_t input_file_length; /* -1, if impossible to calculate */\n FILE* fin;\n FILE* fout;\n\n /* I/O buffers */\n size_t available_in;\n const uint8_t* next_in;\n size_t available_out;\n uint8_t* next_out;\n\n /* Reporting */\n /* size_t would be large enough,\n until 4GiB+ files are compressed / decompressed on 32-bit CPUs. */\n size_t total_in;\n size_t total_out;\n clock_t start_time;\n clock_t end_time;\n} Context;\n\n/* Parse base 64 encoded string to buffer. Not performance-centric.\n |out_len| as input is buffer size; |out_len| as output is decoded length.\n Returns BROTLI_FALSE if either input is not (relaxed) base 64 conformant,\n or output does not fit buffer. */\nstatic BROTLI_BOOL ParseBase64(const char* str, uint8_t* out, size_t* out_len) {\n size_t in_len = strlen(str);\n size_t max_out_len = *out_len;\n size_t i;\n size_t bit_count = 0;\n uint32_t bits = 0;\n size_t padding_count = 0;\n size_t octet_count = 0;\n for (i = 0; i < in_len; ++i) {\n char c = str[i];\n int sextet = 0;\n if (c == 9 || c == 10 || c == 13 || c == ' ') {\n continue;\n }\n if (c == '=') {\n padding_count++;\n continue;\n }\n if (padding_count) return BROTLI_FALSE;\n if (c == '+' || c == '-') {\n sextet = 62;\n } else if (c == '/' || c == '_') {\n sextet = 63;\n } else if (c >= 'A' && c <= 'Z') {\n sextet = c - 'A';\n } else if (c >= 'a' && c <= 'z') {\n sextet = c - 'a' + 26;\n } else if (c >= '0' && c <= '9') {\n sextet = c - '0' + 52;\n } else {\n return BROTLI_FALSE;\n }\n bits = (bits << 6) | (uint32_t)sextet;\n bit_count += 6;\n if (bit_count >= 8) {\n if (octet_count == max_out_len) return BROTLI_FALSE;\n bit_count -= 8;\n out[octet_count++] = (bits >> bit_count) & 0xFF;\n }\n }\n if (padding_count > 2) return BROTLI_FALSE;\n *out_len = octet_count;\n return BROTLI_TRUE;\n}\n\n/* Parse up to 5 decimal digits. */\nstatic BROTLI_BOOL ParseInt(const char* s, int low, int high, int* result) {\n int value = 0;\n int i;\n for (i = 0; i < 5; ++i) {\n char c = s[i];\n if (c == 0) break;\n if (s[i] < '0' || s[i] > '9') return BROTLI_FALSE;\n value = (10 * value) + (c - '0');\n }\n if (i == 0) return BROTLI_FALSE;\n if (i > 1 && s[0] == '0') return BROTLI_FALSE;\n if (s[i] != 0) return BROTLI_FALSE;\n if (value < low || value > high) return BROTLI_FALSE;\n *result = value;\n return BROTLI_TRUE;\n}\n\n/* Returns \"base file name\" or its tail, if it contains '/' or '\\'. */\nstatic const char* FileName(const char* path) {\n const char* separator_position = strrchr(path, '/');\n if (separator_position) path = separator_position + 1;\n separator_position = strrchr(path, '\\\\');\n if (separator_position) path = separator_position + 1;\n return path;\n}\n\n/* Detect if the program name is a special alias that infers a command type. */\nstatic BROTLI_BOOL CheckAlias(const char* name, const char* alias) {\n /* TODO: cast name to lower case? */\n size_t alias_len = strlen(alias);\n name = FileName(name);\n /* Partial comparison. On Windows there could be \".exe\" suffix. */\n if (strncmp(name, alias, alias_len) == 0) {\n char terminator = name[alias_len];\n if (terminator == 0 || terminator == '.') return BROTLI_TRUE;\n }\n return BROTLI_FALSE;\n}\n\nstatic Command ParseParams(Context* params) {\n int argc = params->argc;\n char** argv = params->argv;\n int i;\n int next_option_index = 0;\n size_t input_count = 0;\n size_t longest_path_len = 1;\n BROTLI_BOOL command_set = BROTLI_FALSE;\n BROTLI_BOOL quality_set = BROTLI_FALSE;\n BROTLI_BOOL output_set = BROTLI_FALSE;\n BROTLI_BOOL keep_set = BROTLI_FALSE;\n BROTLI_BOOL squash_set = BROTLI_FALSE;\n BROTLI_BOOL lgwin_set = BROTLI_FALSE;\n BROTLI_BOOL suffix_set = BROTLI_FALSE;\n BROTLI_BOOL after_dash_dash = BROTLI_FALSE;\n BROTLI_BOOL comment_set = BROTLI_FALSE;\n BROTLI_BOOL concatenated_set = BROTLI_FALSE;\n Command command = COMMAND_COMPRESS;\n\n if (CheckAlias(argv[0], \"brcat\")) {\n command_set = BROTLI_TRUE;\n command = COMMAND_DECOMPRESS;\n concatenated_set = BROTLI_TRUE;\n params->allow_concatenated = BROTLI_TRUE;\n output_set = BROTLI_TRUE;\n params->write_to_stdout = BROTLI_TRUE;\n } else if (CheckAlias(argv[0], \"unbrotli\")) {\n command_set = BROTLI_TRUE;\n command = COMMAND_DECOMPRESS;\n }\n\n for (i = 1; i < argc; ++i) {\n const char* arg = argv[i];\n /* C99 5.1.2.2.1: \"members argv[0] through argv[argc-1] inclusive shall\n contain pointers to strings\"; NULL and 0-length are not forbidden. */\n size_t arg_len = arg ? strlen(arg) : 0;\n\n if (arg_len == 0) {\n params->not_input_indices[next_option_index++] = i;\n continue;\n }\n\n /* Too many options. The expected longest option list is:\n \"-q 0 -w 10 -o f -D d -S b -d -f -k -n -v -K --\", i.e. 17 items in total.\n This check is an additional guard that is never triggered, but provides\n a guard for future changes. */\n if (next_option_index > (MAX_OPTIONS - 2)) {\n fprintf(stderr, \"too many options passed\\n\");\n return COMMAND_INVALID;\n }\n\n /* Input file entry. */\n if (after_dash_dash || arg[0] != '-' || arg_len == 1) {\n input_count++;\n if (longest_path_len < arg_len) longest_path_len = arg_len;\n continue;\n }\n\n /* Not a file entry. */\n params->not_input_indices[next_option_index++] = i;\n\n /* '--' entry stop parsing arguments. */\n if (arg_len == 2 && arg[1] == '-') {\n after_dash_dash = BROTLI_TRUE;\n continue;\n }\n\n /* Simple / coalesced options. */\n if (arg[1] != '-') {\n size_t j;\n for (j = 1; j < arg_len; ++j) {\n char c = arg[j];\n if (c >= '0' && c <= '9') {\n if (quality_set) {\n fprintf(stderr, \"quality already set\\n\");\n return COMMAND_INVALID;\n }\n quality_set = BROTLI_TRUE;\n params->quality = c - '0';\n continue;\n } else if (c == 'c') {\n if (output_set) {\n fprintf(stderr, \"write to standard output already set\\n\");\n return COMMAND_INVALID;\n }\n output_set = BROTLI_TRUE;\n params->write_to_stdout = BROTLI_TRUE;\n continue;\n } else if (c == 'd') {\n if (command_set) {\n fprintf(stderr, \"command already set when parsing -d\\n\");\n return COMMAND_INVALID;\n }\n command_set = BROTLI_TRUE;\n command = COMMAND_DECOMPRESS;\n continue;\n } else if (c == 'f') {\n if (params->force_overwrite) {\n fprintf(stderr, \"force output overwrite already set\\n\");\n return COMMAND_INVALID;\n }\n params->force_overwrite = BROTLI_TRUE;\n continue;\n } else if (c == 'h') {\n /* Don't parse further. */\n return COMMAND_HELP;\n } else if (c == 'j' || c == 'k') {\n if (keep_set) {\n fprintf(stderr, \"argument --rm / -j or --keep / -k already set\\n\");\n return COMMAND_INVALID;\n }\n keep_set = BROTLI_TRUE;\n params->junk_source = TO_BROTLI_BOOL(c == 'j');\n continue;\n } else if (c == 'n') {\n if (!params->copy_stat) {\n fprintf(stderr, \"argument --no-copy-stat / -n already set\\n\");\n return COMMAND_INVALID;\n }\n params->copy_stat = BROTLI_FALSE;\n continue;\n } else if (c == 's') {\n if (squash_set) {\n fprintf(stderr, \"argument --squash / -s already set\\n\");\n return COMMAND_INVALID;\n }\n squash_set = BROTLI_TRUE;\n params->reject_uncompressible = BROTLI_TRUE;\n continue;\n } else if (c == 't') {\n if (command_set) {\n fprintf(stderr, \"command already set when parsing -t\\n\");\n return COMMAND_INVALID;\n }\n command_set = BROTLI_TRUE;\n command = COMMAND_TEST_INTEGRITY;\n continue;\n } else if (c == 'v') {\n if (params->verbosity > 0) {\n fprintf(stderr, \"argument --verbose / -v already set\\n\");\n return COMMAND_INVALID;\n }\n params->verbosity = 1;\n continue;\n } else if (c == 'K') {\n if (concatenated_set) {\n fprintf(stderr, \"argument -K / --concatenated already set\\n\");\n return COMMAND_INVALID;\n }\n concatenated_set = BROTLI_TRUE;\n params->allow_concatenated = BROTLI_TRUE;\n continue;\n } else if (c == 'V') {\n /* Don't parse further. */\n return COMMAND_VERSION;\n } else if (c == 'Z') {\n if (quality_set) {\n fprintf(stderr, \"quality already set\\n\");\n return COMMAND_INVALID;\n }\n quality_set = BROTLI_TRUE;\n params->quality = 11;\n continue;\n }\n /* o/q/w/C/D/S with parameter is expected */\n if (c != 'o' && c != 'q' && c != 'w' && c != 'C' && c != 'D' &&\n c != 'S') {\n fprintf(stderr, \"invalid argument -%c\\n\", c);\n return COMMAND_INVALID;\n }\n if (j + 1 != arg_len) {\n fprintf(stderr, \"expected parameter for argument -%c\\n\", c);\n return COMMAND_INVALID;\n }\n i++;\n if (i == argc || !argv[i] || argv[i][0] == 0) {\n fprintf(stderr, \"expected parameter for argument -%c\\n\", c);\n return COMMAND_INVALID;\n }\n params->not_input_indices[next_option_index++] = i;\n if (c == 'o') {\n if (output_set) {\n fprintf(stderr, \"write to standard output already set (-o)\\n\");\n return COMMAND_INVALID;\n }\n params->output_path = argv[i];\n } else if (c == 'q') {\n if (quality_set) {\n fprintf(stderr, \"quality already set\\n\");\n return COMMAND_INVALID;\n }\n quality_set = ParseInt(argv[i], BROTLI_MIN_QUALITY,\n BROTLI_MAX_QUALITY, ¶ms->quality);\n if (!quality_set) {\n fprintf(stderr, \"error parsing quality value [%s]\\n\", argv[i]);\n return COMMAND_INVALID;\n }\n } else if (c == 'w') {\n if (lgwin_set) {\n fprintf(stderr, \"lgwin parameter already set\\n\");\n return COMMAND_INVALID;\n }\n lgwin_set = ParseInt(argv[i], 0,\n BROTLI_MAX_WINDOW_BITS, ¶ms->lgwin);\n if (!lgwin_set) {\n fprintf(stderr, \"error parsing lgwin value [%s]\\n\", argv[i]);\n return COMMAND_INVALID;\n }\n if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {\n fprintf(stderr,\n \"lgwin parameter (%d) smaller than the minimum (%d)\\n\",\n params->lgwin, BROTLI_MIN_WINDOW_BITS);\n return COMMAND_INVALID;\n }\n } else if (c == 'C') {\n if (comment_set) {\n fprintf(stderr, \"comment already set\\n\");\n return COMMAND_INVALID;\n }\n params->comment_len = MAX_COMMENT_LEN;\n if (!ParseBase64(argv[i], params->comment, ¶ms->comment_len)) {\n fprintf(stderr, \"invalid base64-encoded comment\\n\");\n return COMMAND_INVALID;\n }\n comment_set = BROTLI_TRUE;\n } else if (c == 'D') {\n if (params->dictionary_path) {\n fprintf(stderr, \"dictionary path already set\\n\");\n return COMMAND_INVALID;\n }\n params->dictionary_path = argv[i];\n } else if (c == 'S') {\n if (suffix_set) {\n fprintf(stderr, \"suffix already set\\n\");\n return COMMAND_INVALID;\n }\n suffix_set = BROTLI_TRUE;\n params->suffix = argv[i];\n }\n }\n } else { /* Double-dash. */\n arg = &arg[2];\n if (strcmp(\"best\", arg) == 0) {\n if (quality_set) {\n fprintf(stderr, \"quality already set\\n\");\n return COMMAND_INVALID;\n }\n quality_set = BROTLI_TRUE;\n params->quality = 11;\n } else if (strcmp(\"concatenated\", arg) == 0) {\n if (concatenated_set) {\n fprintf(stderr, \"argument -K / --concatenated already set\\n\");\n return COMMAND_INVALID;\n }\n concatenated_set = BROTLI_TRUE;\n params->allow_concatenated = BROTLI_TRUE;\n continue;\n } else if (strcmp(\"decompress\", arg) == 0) {\n if (command_set) {\n fprintf(stderr, \"command already set when parsing --decompress\\n\");\n return COMMAND_INVALID;\n }\n command_set = BROTLI_TRUE;\n command = COMMAND_DECOMPRESS;\n } else if (strcmp(\"force\", arg) == 0) {\n if (params->force_overwrite) {\n fprintf(stderr, \"force output overwrite already set\\n\");\n return COMMAND_INVALID;\n }\n params->force_overwrite = BROTLI_TRUE;\n } else if (strcmp(\"help\", arg) == 0) {\n /* Don't parse further. */\n return COMMAND_HELP;\n } else if (strcmp(\"keep\", arg) == 0) {\n if (keep_set) {\n fprintf(stderr, \"argument --rm / -j or --keep / -k already set\\n\");\n return COMMAND_INVALID;\n }\n keep_set = BROTLI_TRUE;\n params->junk_source = BROTLI_FALSE;\n } else if (strcmp(\"no-copy-stat\", arg) == 0) {\n if (!params->copy_stat) {\n fprintf(stderr, \"argument --no-copy-stat / -n already set\\n\");\n return COMMAND_INVALID;\n }\n params->copy_stat = BROTLI_FALSE;\n } else if (strcmp(\"rm\", arg) == 0) {\n if (keep_set) {\n fprintf(stderr, \"argument --rm / -j or --keep / -k already set\\n\");\n return COMMAND_INVALID;\n }\n keep_set = BROTLI_TRUE;\n params->junk_source = BROTLI_TRUE;\n } else if (strcmp(\"squash\", arg) == 0) {\n if (squash_set) {\n fprintf(stderr, \"argument --squash / -s already set\\n\");\n return COMMAND_INVALID;\n }\n squash_set = BROTLI_TRUE;\n params->reject_uncompressible = BROTLI_TRUE;\n continue;\n } else if (strcmp(\"stdout\", arg) == 0) {\n if (output_set) {\n fprintf(stderr, \"write to standard output already set\\n\");\n return COMMAND_INVALID;\n }\n output_set = BROTLI_TRUE;\n params->write_to_stdout = BROTLI_TRUE;\n } else if (strcmp(\"test\", arg) == 0) {\n if (command_set) {\n fprintf(stderr, \"command already set when parsing --test\\n\");\n return COMMAND_INVALID;\n }\n command_set = BROTLI_TRUE;\n command = COMMAND_TEST_INTEGRITY;\n } else if (strcmp(\"verbose\", arg) == 0) {\n if (params->verbosity > 0) {\n fprintf(stderr, \"argument --verbose / -v already set\\n\");\n return COMMAND_INVALID;\n }\n params->verbosity = 1;\n } else if (strcmp(\"version\", arg) == 0) {\n /* Don't parse further. */\n return COMMAND_VERSION;\n } else {\n /* key=value */\n const char* value = strchr(arg, '=');\n size_t key_len;\n if (!value || value[1] == 0) {\n fprintf(stderr, \"must pass the parameter as --%s=value\\n\", arg);\n return COMMAND_INVALID;\n }\n key_len = (size_t)(value - arg);\n value++;\n if (strncmp(\"comment\", arg, key_len) == 0) {\n if (comment_set) {\n fprintf(stderr, \"comment already set\\n\");\n return COMMAND_INVALID;\n }\n params->comment_len = MAX_COMMENT_LEN;\n if (!ParseBase64(value, params->comment, ¶ms->comment_len)) {\n fprintf(stderr, \"invalid base64-encoded comment\\n\");\n return COMMAND_INVALID;\n }\n comment_set = BROTLI_TRUE;\n } else if (strncmp(\"dictionary\", arg, key_len) == 0) {\n if (params->dictionary_path) {\n fprintf(stderr, \"dictionary path already set\\n\");\n return COMMAND_INVALID;\n }\n params->dictionary_path = value;\n } else if (strncmp(\"lgwin\", arg, key_len) == 0) {\n if (lgwin_set) {\n fprintf(stderr, \"lgwin parameter already set\\n\");\n return COMMAND_INVALID;\n }\n lgwin_set = ParseInt(value, 0,\n BROTLI_MAX_WINDOW_BITS, ¶ms->lgwin);\n if (!lgwin_set) {\n fprintf(stderr, \"error parsing lgwin value [%s]\\n\", value);\n return COMMAND_INVALID;\n }\n if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {\n fprintf(stderr,\n \"lgwin parameter (%d) smaller than the minimum (%d)\\n\",\n params->lgwin, BROTLI_MIN_WINDOW_BITS);\n return COMMAND_INVALID;\n }\n } else if (strncmp(\"large_window\", arg, key_len) == 0) {\n /* This option is intentionally not mentioned in help. */\n if (lgwin_set) {\n fprintf(stderr, \"lgwin parameter already set\\n\");\n return COMMAND_INVALID;\n }\n lgwin_set = ParseInt(value, 0,\n BROTLI_LARGE_MAX_WINDOW_BITS, ¶ms->lgwin);\n if (!lgwin_set) {\n fprintf(stderr, \"error parsing lgwin value [%s]\\n\", value);\n return COMMAND_INVALID;\n }\n if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {\n fprintf(stderr,\n \"lgwin parameter (%d) smaller than the minimum (%d)\\n\",\n params->lgwin, BROTLI_MIN_WINDOW_BITS);\n return COMMAND_INVALID;\n }\n } else if (strncmp(\"output\", arg, key_len) == 0) {\n if (output_set) {\n fprintf(stderr,\n \"write to standard output already set (--output)\\n\");\n return COMMAND_INVALID;\n }\n params->output_path = value;\n } else if (strncmp(\"quality\", arg, key_len) == 0) {\n if (quality_set) {\n fprintf(stderr, \"quality already set\\n\");\n return COMMAND_INVALID;\n }\n quality_set = ParseInt(value, BROTLI_MIN_QUALITY,\n BROTLI_MAX_QUALITY, ¶ms->quality);\n if (!quality_set) {\n fprintf(stderr, \"error parsing quality value [%s]\\n\", value);\n return COMMAND_INVALID;\n }\n } else if (strncmp(\"suffix\", arg, key_len) == 0) {\n if (suffix_set) {\n fprintf(stderr, \"suffix already set\\n\");\n return COMMAND_INVALID;\n }\n suffix_set = BROTLI_TRUE;\n params->suffix = value;\n } else {\n fprintf(stderr, \"invalid parameter: [%s]\\n\", arg);\n return COMMAND_INVALID;\n }\n }\n }\n }\n\n params->input_count = input_count;\n params->longest_path_len = longest_path_len;\n params->decompress = (command == COMMAND_DECOMPRESS);\n params->test_integrity = (command == COMMAND_TEST_INTEGRITY);\n\n if (input_count > 1 && output_set) return COMMAND_INVALID;\n if (params->test_integrity) {\n if (params->output_path) return COMMAND_INVALID;\n if (params->write_to_stdout) return COMMAND_INVALID;\n }\n if (params->reject_uncompressible && params->write_to_stdout) {\n return COMMAND_INVALID;\n }\n if (strchr(params->suffix, '/') || strchr(params->suffix, '\\\\')) {\n return COMMAND_INVALID;\n }\n if (!params->decompress && params->allow_concatenated) {\n return COMMAND_INVALID;\n }\n if (params->allow_concatenated && params->comment_len) {\n return COMMAND_INVALID;\n }\n\n return command;\n}\n\nstatic void PrintVersion(void) {\n int major = BROTLI_VERSION_MAJOR;\n int minor = BROTLI_VERSION_MINOR;\n int patch = BROTLI_VERSION_PATCH;\n fprintf(stdout, \"brotli %d.%d.%d\\n\", major, minor, patch);\n}\n\nstatic void PrintHelp(const char* name, BROTLI_BOOL error) {\n FILE* media = error ? stderr : stdout;\n /* String is cut to pieces with length less than 509, to conform C90 spec. */\n fprintf(media,\n\"Usage: %s [OPTION]... [FILE]...\\n\",\n name);\n fprintf(media,\n\"Options:\\n\"\n\" -# compression level (0-9)\\n\"\n\" -c, --stdout write on standard output\\n\"\n\" -d, --decompress decompress\\n\"\n\" -f, --force force output file overwrite\\n\"\n\" -h, --help display this help and exit\\n\");\n fprintf(media,\n\" -j, --rm remove source file(s)\\n\"\n\" -s, --squash remove destination file if larger than source\\n\"\n\" -k, --keep keep source file(s) (default)\\n\"\n\" -n, --no-copy-stat do not copy source file(s) attributes\\n\"\n\" -o FILE, --output=FILE output file (only if 1 input file)\\n\");\n fprintf(media,\n\" -q NUM, --quality=NUM compression level (%d-%d)\\n\",\n BROTLI_MIN_QUALITY, BROTLI_MAX_QUALITY);\n fprintf(media,\n\" -t, --test test compressed file integrity\\n\"\n\" -v, --verbose verbose mode\\n\");\n fprintf(media,\n\" -w NUM, --lgwin=NUM set LZ77 window size (0, %d-%d)\\n\"\n\" window size = 2**NUM - 16\\n\"\n\" 0 lets compressor choose the optimal value\\n\",\n BROTLI_MIN_WINDOW_BITS, BROTLI_MAX_WINDOW_BITS);\n fprintf(media,\n\" --large_window=NUM use incompatible large-window brotli\\n\"\n\" bitstream with window size (0, %d-%d)\\n\"\n\" WARNING: this format is not compatible\\n\"\n\" with brotli RFC 7932 and may not be\\n\"\n\" decodable with regular brotli decoders\\n\",\n BROTLI_MIN_WINDOW_BITS, BROTLI_LARGE_MAX_WINDOW_BITS);\n fprintf(media,\n\" -C B64, --comment=B64 set comment; argument is base64-decoded first;\\n\"\n\" (maximal decoded length: %d)\\n\"\n\" when decoding: check stream comment;\\n\"\n\" when encoding: embed comment (fingerprint)\\n\",\n MAX_COMMENT_LEN);\n fprintf(media,\n\" -D FILE, --dictionary=FILE use FILE as raw (LZ77) dictionary\\n\"\n\" -K, --concatenated allows concatenated brotli streams as input\\n\");\n fprintf(media,\n\" -S SUF, --suffix=SUF output file suffix (default:'%s')\\n\",\n DEFAULT_SUFFIX);\n fprintf(media,\n\" -V, --version display version and exit\\n\"\n\" -Z, --best use best compression level (11) (default)\\n\"\n\"Simple options could be coalesced, i.e. '-9kf' is equivalent to '-9 -k -f'.\\n\"\n\"With no FILE, or when FILE is -, read standard input.\\n\"\n\"All arguments after '--' are treated as files.\\n\");\n}\n\nstatic const char* PrintablePath(const char* path) {\n return path ? path : \"con\";\n}\n\nstatic BROTLI_BOOL OpenInputFile(const char* input_path, FILE** f) {\n *f = NULL;\n if (!input_path) {\n *f = fdopen(MAKE_BINARY(STDIN_FILENO), \"rb\");\n return BROTLI_TRUE;\n }\n *f = fopen(input_path, \"rb\");\n if (!*f) {\n fprintf(stderr, \"failed to open input file [%s]: %s\\n\",\n PrintablePath(input_path), strerror(errno));\n return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL OpenOutputFile(const char* output_path, FILE** f,\n BROTLI_BOOL force) {\n int fd;\n *f = NULL;\n if (!output_path) {\n *f = fdopen(MAKE_BINARY(STDOUT_FILENO), \"wb\");\n return BROTLI_TRUE;\n }\n fd = open(output_path, O_CREAT | (force ? 0 : O_EXCL) | O_WRONLY | O_TRUNC,\n S_IRUSR | S_IWUSR);\n if (fd < 0) {\n fprintf(stderr, \"failed to open output file [%s]: %s\\n\",\n PrintablePath(output_path), strerror(errno));\n return BROTLI_FALSE;\n }\n *f = fdopen(fd, \"wb\");\n if (!*f) {\n fprintf(stderr, \"failed to open output file [%s]: %s\\n\",\n PrintablePath(output_path), strerror(errno));\n return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nstatic int64_t FileSize(const char* path) {\n FILE* f = fopen(path, \"rb\");\n int64_t retval;\n if (f == NULL) {\n return -1;\n }\n if (fseek(f, 0L, SEEK_END) != 0) {\n fclose(f);\n return -1;\n }\n retval = ftell(f);\n if (fclose(f) != 0) {\n return -1;\n }\n return retval;\n}\n\nstatic int CopyTimeStat(const struct stat* statbuf, const char* output_path) {\n#if HAVE_UTIMENSAT\n struct timespec times[2];\n times[0].tv_sec = statbuf->st_atime;\n times[0].tv_nsec = ATIME_NSEC(statbuf);\n times[1].tv_sec = statbuf->st_mtime;\n times[1].tv_nsec = MTIME_NSEC(statbuf);\n return utimensat(AT_FDCWD, output_path, times, AT_SYMLINK_NOFOLLOW);\n#else\n struct utimbuf times;\n times.actime = statbuf->st_atime;\n times.modtime = statbuf->st_mtime;\n return utime(output_path, ×);\n#endif\n}\n\n/* Copy file times and permissions.\n TODO(eustas): this is a \"best effort\" implementation; honest cross-platform\n fully featured implementation is way too hacky; add more hacks by request. */\nstatic void CopyStat(const char* input_path, const char* output_path) {\n struct stat statbuf;\n int res;\n if (input_path == 0 || output_path == 0) {\n return;\n }\n if (stat(input_path, &statbuf) != 0) {\n return;\n }\n res = CopyTimeStat(&statbuf, output_path);\n res = chmod(output_path, statbuf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));\n if (res != 0) {\n fprintf(stderr, \"setting access bits failed for [%s]: %s\\n\",\n PrintablePath(output_path), strerror(errno));\n }\n res = chown(output_path, (uid_t)-1, statbuf.st_gid);\n if (res != 0) {\n fprintf(stderr, \"setting group failed for [%s]: %s\\n\",\n PrintablePath(output_path), strerror(errno));\n }\n res = chown(output_path, statbuf.st_uid, (gid_t)-1);\n if (res != 0) {\n fprintf(stderr, \"setting user failed for [%s]: %s\\n\",\n PrintablePath(output_path), strerror(errno));\n }\n}\n\n/* Result ownership is passed to caller.\n |*dictionary_size| is set to resulting buffer size. */\nstatic BROTLI_BOOL ReadDictionary(Context* context, Command command) {\n static const int kMaxDictionarySize =\n BROTLI_MAX_DISTANCE - BROTLI_MAX_BACKWARD_LIMIT(24);\n FILE* f;\n int64_t file_size_64;\n uint8_t* buffer;\n size_t bytes_read;\n\n if (context->dictionary_path == NULL) return BROTLI_TRUE;\n f = fopen(context->dictionary_path, \"rb\");\n if (f == NULL) {\n fprintf(stderr, \"failed to open dictionary file [%s]: %s\\n\",\n PrintablePath(context->dictionary_path), strerror(errno));\n return BROTLI_FALSE;\n }\n\n file_size_64 = FileSize(context->dictionary_path);\n if (file_size_64 == -1) {\n fprintf(stderr, \"could not get size of dictionary file [%s]\",\n PrintablePath(context->dictionary_path));\n fclose(f);\n return BROTLI_FALSE;\n }\n\n if (file_size_64 > kMaxDictionarySize) {\n fprintf(stderr, \"dictionary [%s] is larger than maximum allowed: %d\\n\",\n PrintablePath(context->dictionary_path), kMaxDictionarySize);\n fclose(f);\n return BROTLI_FALSE;\n }\n context->dictionary_size = (size_t)file_size_64;\n\n buffer = (uint8_t*)malloc(context->dictionary_size);\n if (!buffer) {\n fprintf(stderr, \"could not read dictionary: out of memory\\n\");\n fclose(f);\n return BROTLI_FALSE;\n }\n bytes_read = fread(buffer, sizeof(uint8_t), context->dictionary_size, f);\n if (bytes_read != context->dictionary_size) {\n free(buffer);\n fprintf(stderr, \"failed to read dictionary [%s]: %s\\n\",\n PrintablePath(context->dictionary_path), strerror(errno));\n fclose(f);\n return BROTLI_FALSE;\n }\n fclose(f);\n context->dictionary = buffer;\n if (command == COMMAND_COMPRESS) {\n context->prepared_dictionary = BrotliEncoderPrepareDictionary(\n BROTLI_SHARED_DICTIONARY_RAW, context->dictionary_size,\n context->dictionary, BROTLI_MAX_QUALITY, NULL, NULL, NULL);\n if (context->prepared_dictionary == NULL) {\n fprintf(stderr, \"failed to prepare dictionary [%s]\\n\",\n PrintablePath(context->dictionary_path));\n return BROTLI_FALSE;\n }\n }\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL NextFile(Context* context) {\n const char* arg;\n size_t arg_len;\n\n /* Iterator points to last used arg; increment to search for the next one. */\n context->iterator++;\n\n context->input_file_length = -1;\n\n /* No input path; read from console. */\n if (context->input_count == 0) {\n if (context->iterator > 1) return BROTLI_FALSE;\n context->current_input_path = NULL;\n /* Either write to the specified path, or to console. */\n context->current_output_path = context->output_path;\n return BROTLI_TRUE;\n }\n\n /* Skip option arguments. */\n while (context->iterator == context->not_input_indices[context->ignore]) {\n context->iterator++;\n context->ignore++;\n }\n\n /* All args are scanned already. */\n if (context->iterator >= context->argc) return BROTLI_FALSE;\n\n /* Iterator now points to the input file name. */\n arg = context->argv[context->iterator];\n arg_len = strlen(arg);\n /* Read from console. */\n if (arg_len == 1 && arg[0] == '-') {\n context->current_input_path = NULL;\n context->current_output_path = context->output_path;\n return BROTLI_TRUE;\n }\n\n context->current_input_path = arg;\n context->input_file_length = FileSize(arg);\n context->current_output_path = context->output_path;\n\n if (context->output_path) return BROTLI_TRUE;\n if (context->write_to_stdout) return BROTLI_TRUE;\n\n strcpy(context->modified_path, arg);\n context->current_output_path = context->modified_path;\n /* If output is not specified, input path suffix should match. */\n if (context->decompress) {\n size_t suffix_len = strlen(context->suffix);\n char* name = (char*)FileName(context->modified_path);\n char* name_suffix;\n size_t name_len = strlen(name);\n if (name_len < suffix_len + 1) {\n fprintf(stderr, \"empty output file name for [%s] input file\\n\",\n PrintablePath(arg));\n context->iterator_error = BROTLI_TRUE;\n return BROTLI_FALSE;\n }\n name_suffix = name + name_len - suffix_len;\n if (strcmp(context->suffix, name_suffix) != 0) {\n fprintf(stderr, \"input file [%s] suffix mismatch\\n\",\n PrintablePath(arg));\n context->iterator_error = BROTLI_TRUE;\n return BROTLI_FALSE;\n }\n name_suffix[0] = 0;\n return BROTLI_TRUE;\n } else {\n strcpy(context->modified_path + arg_len, context->suffix);\n return BROTLI_TRUE;\n }\n}\n\nstatic BROTLI_BOOL OpenFiles(Context* context) {\n BROTLI_BOOL is_ok = OpenInputFile(context->current_input_path, &context->fin);\n if (!context->test_integrity && is_ok) {\n is_ok = OpenOutputFile(\n context->current_output_path, &context->fout, context->force_overwrite);\n }\n return is_ok;\n}\n\nstatic BROTLI_BOOL CloseFiles(Context* context, BROTLI_BOOL rm_input,\n BROTLI_BOOL rm_output) {\n BROTLI_BOOL is_ok = BROTLI_TRUE;\n if (!context->test_integrity && context->fout) {\n if (fclose(context->fout) != 0) {\n if (is_ok) {\n fprintf(stderr, \"fclose failed [%s]: %s\\n\",\n PrintablePath(context->current_output_path), strerror(errno));\n }\n is_ok = BROTLI_FALSE;\n }\n if (rm_output && context->current_output_path) {\n unlink(context->current_output_path);\n }\n\n /* TOCTOU violation, but otherwise it is impossible to set file times. */\n if (!rm_output && is_ok && context->copy_stat) {\n CopyStat(context->current_input_path, context->current_output_path);\n }\n }\n\n if (context->fin) {\n if (fclose(context->fin) != 0) {\n if (is_ok) {\n fprintf(stderr, \"fclose failed [%s]: %s\\n\",\n PrintablePath(context->current_input_path), strerror(errno));\n }\n is_ok = BROTLI_FALSE;\n }\n }\n if (rm_input && context->current_input_path) {\n unlink(context->current_input_path);\n }\n\n context->fin = NULL;\n context->fout = NULL;\n\n return is_ok;\n}\n\nstatic const size_t kFileBufferSize = 1 << 19;\n\nstatic void InitializeBuffers(Context* context) {\n context->available_in = 0;\n context->next_in = NULL;\n context->available_out = kFileBufferSize;\n context->next_out = context->output;\n context->total_in = 0;\n context->total_out = 0;\n if (context->verbosity > 0) {\n context->start_time = clock();\n }\n}\n\n/* This method might give the false-negative result.\n However, after an empty / incomplete read it should tell the truth. */\nstatic BROTLI_BOOL HasMoreInput(Context* context) {\n return feof(context->fin) ? BROTLI_FALSE : BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL ProvideInput(Context* context) {\n context->available_in =\n fread(context->input, 1, kFileBufferSize, context->fin);\n context->total_in += context->available_in;\n context->next_in = context->input;\n if (ferror(context->fin)) {\n fprintf(stderr, \"failed to read input [%s]: %s\\n\",\n PrintablePath(context->current_input_path), strerror(errno));\n return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\n/* Internal: should be used only in Provide-/Flush-Output. */\nstatic BROTLI_BOOL WriteOutput(Context* context) {\n size_t out_size = (size_t)(context->next_out - context->output);\n context->total_out += out_size;\n if (out_size == 0) return BROTLI_TRUE;\n if (context->test_integrity) return BROTLI_TRUE;\n\n fwrite(context->output, 1, out_size, context->fout);\n if (ferror(context->fout)) {\n fprintf(stderr, \"failed to write output [%s]: %s\\n\",\n PrintablePath(context->current_output_path), strerror(errno));\n return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL ProvideOutput(Context* context) {\n if (!WriteOutput(context)) return BROTLI_FALSE;\n context->available_out = kFileBufferSize;\n context->next_out = context->output;\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL FlushOutput(Context* context) {\n if (!WriteOutput(context)) return BROTLI_FALSE;\n context->available_out = 0;\n context->next_out = context->output;\n return BROTLI_TRUE;\n}\n\nstatic void PrintBytes(size_t value) {\n if (value < 1024) {\n fprintf(stderr, \"%d B\", (int)value);\n } else if (value < 1048576) {\n fprintf(stderr, \"%0.3f KiB\", (double)value / 1024.0);\n } else if (value < 1073741824) {\n fprintf(stderr, \"%0.3f MiB\", (double)value / 1048576.0);\n } else {\n fprintf(stderr, \"%0.3f GiB\", (double)value / 1073741824.0);\n }\n}\n\nstatic void PrintFileProcessingProgress(Context* context) {\n fprintf(stderr, \"[%s]: \", PrintablePath(context->current_input_path));\n PrintBytes(context->total_in);\n fprintf(stderr, \" -> \");\n PrintBytes(context->total_out);\n fprintf(stderr, \" in %1.2f sec\", (double)(context->end_time - context->start_time) / CLOCKS_PER_SEC);\n}\n\nstatic const char* PrettyDecoderErrorString(BrotliDecoderErrorCode code) {\n /* \"_ERROR_domain_\" is in only added in newer versions. If CLI is linked\n against older shared library, return error string as is; result might be\n a bit confusing, e.g. \"RESERVED\" instead of \"FORMAT_RESERVED\" */\n const char* prefix = \"_ERROR_\";\n size_t prefix_len = strlen(prefix);\n const char* error_str = BrotliDecoderErrorString(code);\n size_t error_len = strlen(error_str);\n if (error_len > prefix_len) {\n if (strncmp(error_str, prefix, prefix_len) == 0) {\n error_str += prefix_len;\n }\n }\n return error_str;\n}\n\nstatic void OnMetadataStart(void* opaque, size_t size) {\n Context* context = (Context*) opaque;\n if (context->comment_state == COMMENT_INIT) {\n if (context->comment_len != size) {\n context->comment_state = COMMENT_BAD;\n return;\n }\n context->comment_pos = 0;\n context->comment_state = COMMENT_READ;\n }\n}\n\nstatic void OnMetadataChunk(void* opaque, const uint8_t* data, size_t size) {\n Context* context = (Context*) opaque;\n if (context->comment_state == COMMENT_READ) {\n size_t i;\n for (i = 0; i < size; ++i) {\n if (context->comment_pos >= context->comment_len) {\n context->comment_state = COMMENT_BAD;\n return;\n }\n if (context->comment[context->comment_pos++] != data[i]) {\n context->comment_state = COMMENT_BAD;\n return;\n }\n }\n if (context->comment_pos == context->comment_len) {\n context->comment_state = COMMENT_OK;\n }\n }\n}\n\nstatic BROTLI_BOOL InitDecoder(Context* context) {\n context->decoder = BrotliDecoderCreateInstance(NULL, NULL, NULL);\n if (!context->decoder) {\n fprintf(stderr, \"out of memory\\n\");\n return BROTLI_FALSE;\n }\n /* This allows decoding \"large-window\" streams. Though it creates\n fragmentation (new builds decode streams that old builds don't),\n it is better from used experience perspective. */\n BrotliDecoderSetParameter(\n context->decoder, BROTLI_DECODER_PARAM_LARGE_WINDOW, 1u);\n if (context->dictionary) {\n BrotliDecoderAttachDictionary(context->decoder,\n BROTLI_SHARED_DICTIONARY_RAW, context->dictionary_size,\n context->dictionary);\n }\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL DecompressFile(Context* context) {\n BrotliDecoderState* s = context->decoder;\n BrotliDecoderResult result = BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT;\n if (context->comment_len) {\n context->comment_state = COMMENT_INIT;\n BrotliDecoderSetMetadataCallbacks(s, &OnMetadataStart, &OnMetadataChunk,\n (void*)context);\n } else {\n context->comment_state = COMMENT_OK;\n }\n\n InitializeBuffers(context);\n for (;;) {\n /* Early check */\n if (context->comment_state == COMMENT_BAD) {\n fprintf(stderr, \"corrupt input [%s]\\n\",\n PrintablePath(context->current_input_path));\n if (context->verbosity > 0) {\n fprintf(stderr, \"reason: comment mismatch\\n\");\n }\n return BROTLI_FALSE;\n }\n if (result == BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT) {\n if (!HasMoreInput(context)) {\n fprintf(stderr, \"corrupt input [%s]\\n\",\n PrintablePath(context->current_input_path));\n if (context->verbosity > 0) {\n fprintf(stderr, \"reason: truncated input\\n\");\n }\n return BROTLI_FALSE;\n }\n if (!ProvideInput(context)) return BROTLI_FALSE;\n } else if (result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) {\n if (!ProvideOutput(context)) return BROTLI_FALSE;\n } else if (result == BROTLI_DECODER_RESULT_SUCCESS) {\n if (!FlushOutput(context)) return BROTLI_FALSE;\n BROTLI_BOOL has_more_input = (context->available_in != 0);\n int extra_char = EOF;\n if (!has_more_input) {\n extra_char = fgetc(context->fin);\n if (extra_char != EOF) {\n has_more_input = BROTLI_TRUE;\n context->input[0] = (uint8_t)extra_char;\n context->next_in = context->input;\n context->available_in = 1;\n }\n }\n if (has_more_input) {\n if (context->allow_concatenated) {\n if (context->verbosity > 0) {\n fprintf(stderr, \"extra input\\n\");\n }\n if (!ProvideOutput(context)) return BROTLI_FALSE;\n BrotliDecoderDestroyInstance(context->decoder);\n context->decoder = NULL;\n if (!InitDecoder(context)) return BROTLI_FALSE;\n s = context->decoder;\n } else {\n fprintf(stderr, \"corrupt input [%s]\\n\",\n PrintablePath(context->current_input_path));\n if (context->verbosity > 0) {\n fprintf(stderr, \"reason: extra input\\n\");\n }\n return BROTLI_FALSE;\n }\n } else {\n if (context->verbosity > 0) {\n context->end_time = clock();\n fprintf(stderr, \"Decompressed \");\n PrintFileProcessingProgress(context);\n fprintf(stderr, \"\\n\");\n }\n /* Final check */\n if (context->comment_state != COMMENT_OK) {\n fprintf(stderr, \"corrupt input [%s]\\n\",\n PrintablePath(context->current_input_path));\n if (context->verbosity > 0) {\n fprintf(stderr, \"reason: comment mismatch\\n\");\n }\n }\n return BROTLI_TRUE;\n }\n } else { /* result == BROTLI_DECODER_RESULT_ERROR */\n fprintf(stderr, \"corrupt input [%s]\\n\",\n PrintablePath(context->current_input_path));\n if (context->verbosity > 0) {\n BrotliDecoderErrorCode error = BrotliDecoderGetErrorCode(s);\n const char* error_str = PrettyDecoderErrorString(error);\n fprintf(stderr, \"reason: %s (%d)\\n\", error_str, error);\n }\n return BROTLI_FALSE;\n }\n\n result = BrotliDecoderDecompressStream(s, &context->available_in,\n &context->next_in, &context->available_out, &context->next_out, 0);\n }\n}\n\nstatic BROTLI_BOOL DecompressFiles(Context* context) {\n while (NextFile(context)) {\n BROTLI_BOOL is_ok = BROTLI_TRUE;\n BROTLI_BOOL rm_input = BROTLI_FALSE;\n BROTLI_BOOL rm_output = BROTLI_TRUE;\n if (!InitDecoder(context)) return BROTLI_FALSE;\n is_ok = OpenFiles(context);\n if (is_ok && !context->current_input_path &&\n !context->force_overwrite && isatty(STDIN_FILENO)) {\n fprintf(stderr, \"Use -h help. Use -f to force input from a terminal.\\n\");\n is_ok = BROTLI_FALSE;\n }\n if (is_ok) is_ok = DecompressFile(context);\n if (context->decoder) BrotliDecoderDestroyInstance(context->decoder);\n context->decoder = NULL;\n rm_output = !is_ok;\n rm_input = !rm_output && context->junk_source;\n if (!CloseFiles(context, rm_input, rm_output)) is_ok = BROTLI_FALSE;\n if (!is_ok) return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nstatic BROTLI_BOOL CompressFile(Context* context, BrotliEncoderState* s) {\n BROTLI_BOOL is_eof = BROTLI_FALSE;\n BROTLI_BOOL prologue = !!context->comment_len;\n InitializeBuffers(context);\n for (;;) {\n if (context->available_in == 0 && !is_eof) {\n if (!ProvideInput(context)) return BROTLI_FALSE;\n is_eof = !HasMoreInput(context);\n }\n\n if (prologue) {\n prologue = BROTLI_FALSE;\n const uint8_t* next_meta = context->comment;\n size_t available_meta = context->comment_len;\n if (!BrotliEncoderCompressStream(s,\n BROTLI_OPERATION_EMIT_METADATA,\n &available_meta, &next_meta,\n &context->available_out, &context->next_out, NULL)) {\n /* Should detect OOM? */\n fprintf(stderr, \"failed to emit metadata [%s]\\n\",\n PrintablePath(context->current_input_path));\n return BROTLI_FALSE;\n }\n if (available_meta != 0) {\n fprintf(stderr, \"failed to emit metadata [%s]\\n\",\n PrintablePath(context->current_input_path));\n return BROTLI_FALSE;\n }\n } else {\n if (!BrotliEncoderCompressStream(s,\n is_eof ? BROTLI_OPERATION_FINISH : BROTLI_OPERATION_PROCESS,\n &context->available_in, &context->next_in,\n &context->available_out, &context->next_out, NULL)) {\n /* Should detect OOM? */\n fprintf(stderr, \"failed to compress data [%s]\\n\",\n PrintablePath(context->current_input_path));\n return BROTLI_FALSE;\n }\n }\n\n if (context->available_out == 0) {\n if (!ProvideOutput(context)) return BROTLI_FALSE;\n }\n\n if (BrotliEncoderIsFinished(s)) {\n if (!FlushOutput(context)) return BROTLI_FALSE;\n if (context->verbosity > 0) {\n context->end_time = clock();\n fprintf(stderr, \"Compressed \");\n PrintFileProcessingProgress(context);\n fprintf(stderr, \"\\n\");\n }\n return BROTLI_TRUE;\n }\n }\n}\n\nstatic BROTLI_BOOL CompressFiles(Context* context) {\n while (NextFile(context)) {\n BROTLI_BOOL is_ok = BROTLI_TRUE;\n BROTLI_BOOL rm_input = BROTLI_FALSE;\n BROTLI_BOOL rm_output = BROTLI_TRUE;\n BrotliEncoderState* s = BrotliEncoderCreateInstance(NULL, NULL, NULL);\n if (!s) {\n fprintf(stderr, \"out of memory\\n\");\n return BROTLI_FALSE;\n }\n BrotliEncoderSetParameter(s,\n BROTLI_PARAM_QUALITY, (uint32_t)context->quality);\n if (context->lgwin > 0) {\n /* Specified by user. */\n /* Do not enable \"large-window\" extension, if not required. */\n if (context->lgwin > BROTLI_MAX_WINDOW_BITS) {\n BrotliEncoderSetParameter(s, BROTLI_PARAM_LARGE_WINDOW, 1u);\n }\n BrotliEncoderSetParameter(s,\n BROTLI_PARAM_LGWIN, (uint32_t)context->lgwin);\n } else {\n /* 0, or not specified by user; could be chosen by compressor. */\n uint32_t lgwin = DEFAULT_LGWIN;\n /* Use file size to limit lgwin. */\n if (context->input_file_length >= 0) {\n lgwin = BROTLI_MIN_WINDOW_BITS;\n while (BROTLI_MAX_BACKWARD_LIMIT(lgwin) <\n (uint64_t)context->input_file_length) {\n lgwin++;\n if (lgwin == BROTLI_MAX_WINDOW_BITS) break;\n }\n }\n BrotliEncoderSetParameter(s, BROTLI_PARAM_LGWIN, lgwin);\n }\n if (context->input_file_length > 0) {\n uint32_t size_hint = context->input_file_length < (1 << 30) ?\n (uint32_t)context->input_file_length : (1u << 30);\n BrotliEncoderSetParameter(s, BROTLI_PARAM_SIZE_HINT, size_hint);\n }\n if (context->dictionary) {\n BrotliEncoderAttachPreparedDictionary(s, context->prepared_dictionary);\n }\n is_ok = OpenFiles(context);\n if (is_ok && !context->current_output_path &&\n !context->force_overwrite && isatty(STDOUT_FILENO)) {\n fprintf(stderr, \"Use -h help. Use -f to force output to a terminal.\\n\");\n is_ok = BROTLI_FALSE;\n }\n if (is_ok) is_ok = CompressFile(context, s);\n BrotliEncoderDestroyInstance(s);\n rm_output = !is_ok;\n if (is_ok && context->reject_uncompressible) {\n if (context->total_out >= context->total_in) {\n rm_output = BROTLI_TRUE;\n if (context->verbosity > 0) {\n fprintf(stderr, \"Output is larger than input\\n\");\n }\n }\n }\n rm_input = !rm_output && context->junk_source;\n if (!CloseFiles(context, rm_input, rm_output)) is_ok = BROTLI_FALSE;\n if (!is_ok) return BROTLI_FALSE;\n }\n return BROTLI_TRUE;\n}\n\nint main(int argc, char** argv) {\n Command command;\n Context context;\n BROTLI_BOOL is_ok = BROTLI_TRUE;\n int i;\n\n context.quality = 11;\n context.lgwin = -1;\n context.verbosity = 0;\n context.comment_len = 0;\n context.force_overwrite = BROTLI_FALSE;\n context.junk_source = BROTLI_FALSE;\n context.reject_uncompressible = BROTLI_FALSE;\n context.copy_stat = BROTLI_TRUE;\n context.test_integrity = BROTLI_FALSE;\n context.write_to_stdout = BROTLI_FALSE;\n context.decompress = BROTLI_FALSE;\n context.large_window = BROTLI_FALSE;\n context.allow_concatenated = BROTLI_FALSE;\n context.output_path = NULL;\n context.dictionary_path = NULL;\n context.suffix = DEFAULT_SUFFIX;\n for (i = 0; i < MAX_OPTIONS; ++i) context.not_input_indices[i] = 0;\n context.longest_path_len = 1;\n context.input_count = 0;\n\n context.argc = argc;\n context.argv = argv;\n context.dictionary = NULL;\n context.dictionary_size = 0;\n context.decoder = NULL;\n context.prepared_dictionary = NULL;\n context.modified_path = NULL;\n context.iterator = 0;\n context.ignore = 0;\n context.iterator_error = BROTLI_FALSE;\n context.buffer = NULL;\n context.current_input_path = NULL;\n context.current_output_path = NULL;\n context.fin = NULL;\n context.fout = NULL;\n\n command = ParseParams(&context);\n\n if (command == COMMAND_COMPRESS || command == COMMAND_DECOMPRESS ||\n command == COMMAND_TEST_INTEGRITY) {\n if (!ReadDictionary(&context, command)) is_ok = BROTLI_FALSE;\n if (is_ok) {\n size_t modified_path_len =\n context.longest_path_len + strlen(context.suffix) + 1;\n context.modified_path = (char*)malloc(modified_path_len);\n context.buffer = (uint8_t*)malloc(kFileBufferSize * 2);\n if (!context.modified_path || !context.buffer) {\n fprintf(stderr, \"out of memory\\n\");\n is_ok = BROTLI_FALSE;\n } else {\n context.input = context.buffer;\n context.output = context.buffer + kFileBufferSize;\n }\n }\n }\n\n if (!is_ok) command = COMMAND_NOOP;\n\n switch (command) {\n case COMMAND_NOOP:\n break;\n\n case COMMAND_VERSION:\n PrintVersion();\n break;\n\n case COMMAND_COMPRESS:\n is_ok = CompressFiles(&context);\n break;\n\n case COMMAND_DECOMPRESS:\n case COMMAND_TEST_INTEGRITY:\n is_ok = DecompressFiles(&context);\n break;\n\n case COMMAND_HELP:\n case COMMAND_INVALID:\n default:\n is_ok = (command == COMMAND_HELP);\n PrintHelp(FileName(argv[0]), is_ok);\n break;\n }\n\n if (context.iterator_error) is_ok = BROTLI_FALSE;\n\n BrotliEncoderDestroyPreparedDictionary(context.prepared_dictionary);\n free(context.dictionary);\n free(context.modified_path);\n free(context.buffer);\n\n if (!is_ok) exit(1);\n return 0;\n}\n" }, { "path": "c/tools/brotli.md", "content": "# NAME\n\nbrotli(1) -- brotli, brcat, unbrotli - compress or decompress files\n\n# SYNOPSIS\n\n`brotli` [*OPTION|FILE*]...\n\n`brcat` is equivalent to `brotli --decompress --concatenated --stdout`\n\n`unbrotli` is equivalent to `brotli --decompress`\n\n# DESCRIPTION\n\n`brotli` is a generic-purpose lossless compression algorithm that compresses\ndata using a combination of a modern variant of the **LZ77** algorithm, Huffman\ncoding and 2-nd order context modeling, with a compression ratio comparable to\nthe best currently available general-purpose compression methods. It is similar\nin speed with deflate but offers more dense compression.\n\n`brotli` command line syntax similar to `gzip (1)` and `zstd (1)`.\nUnlike `gzip (1)`, source files are preserved by default. It is possible to\nremove them after processing by using the `--rm` _option_.\n\nArguments that look like \"`--name`\" or \"`--name=value`\" are _options_. Every\n_option_ has a short form \"`-x`\" or \"`-x value`\". Multiple short form _options_\ncould be coalesced:\n\n* \"`--decompress --stdout --suffix=.b`\" works the same as\n* \"`-d -s -S .b`\" and\n* \"`-dsS .b`\"\n\n`brotli` has 3 operation modes:\n\n* default mode is compression;\n* `--decompress` option activates decompression mode;\n* `--test` option switches to integrity test mode; this option is equivalent to\n \"`--decompress --stdout`\" except that the decompressed data is discarded\n instead of being written to standard output.\n\nEvery non-option argument is a _file_ entry. If no _files_ are given or _file_\nis \"`-`\", `brotli` reads from standard input. All arguments after \"`--`\" are\n_file_ entries.\n\nUnless `--stdout` or `--output` is specified, _files_ are written to a new file\nwhose name is derived from the source _file_ name:\n\n* when compressing, a suffix is appended to the source filename to\n get the target filename\n* when decompressing, a suffix is removed from the source filename to\n get the target filename\n\nDefault suffix is `.br`, but it could be specified with `--suffix` option.\n\nConflicting or duplicate _options_ are not allowed.\n\n# OPTIONS\n\n* `-#`:\n compression level (0-9); bigger values cause denser, but slower compression\n* `-c`, `--stdout`:\n write on standard output\n* `-d`, `--decompress`:\n decompress mode\n* `-f`, `--force`:\n force output file overwrite\n* `-h`, `--help`:\n display this help and exit\n* `-j`, `--rm`:\n remove source file(s); `gzip (1)`-like behaviour\n* `-k`, `--keep`:\n keep source file(s); `zstd (1)`-like behaviour\n* `-n`, `--no-copy-stat`:\n do not copy source file(s) attributes\n* `-o FILE`, `--output=FILE`\n output file; valid only if there is a single input entry\n* `-q NUM`, `--quality=NUM`:\n compression level (0-11); bigger values cause denser, but slower compression\n* `-t`, `--test`:\n test file integrity mode\n* `-v`, `--verbose`:\n increase output verbosity\n* `-w NUM`, `--lgwin=NUM`:\n set LZ77 window size (0, 10-24) (default: 24); window size is\n `(pow(2, NUM) - 16)`; 0 lets compressor decide over the optimal value;\n bigger windows size improve density; decoder might require up to window size\n memory to operate\n* `-C B64`, `--comment=B64`:\n set comment; argument is base64-decoded first;\n when decoding: check stream comment;\n when encoding: embed comment (fingerprint)\n* `-D FILE`, `--dictionary=FILE`:\n use FILE as raw (LZ77) dictionary; same dictionary MUST be used both for\n compression and decompression\n* `-K`, `--concatenated`:\n when decoding, allow concatenated brotli streams as input\n* `-S SUF`, `--suffix=SUF`:\n output file suffix (default: `.br`)\n* `-V`, `--version`:\n display version and exit\n* `-Z`, `--best`:\n use best compression level (default); same as \"`-q 11`\"\n\n# SEE ALSO\n\n`brotli` file format is defined in\n[RFC 7932](https://www.ietf.org/rfc/rfc7932.txt).\n\n`brotli` is open-sourced under the\n[MIT License](https://opensource.org/licenses/MIT).\n\nMailing list: https://groups.google.com/forum/#!forum/brotli\n\n# BUGS\n\nReport bugs at: https://github.com/google/brotli/issues\n" }, { "path": "csharp/brotlidec.Tests.csproj", "content": "\n\n \n net9.0\n false\n \n\n \n \n \n \n\n \n \n \n \n \n \n\n\n" }, { "path": "csharp/brotlidec.csproj", "content": "\n\n \n net9.0\n false\n \n\n \n \n \n \n\n\n" }, { "path": "csharp/injected_code.txt", "content": "// <{[INJECTED CODE]}>\n\t\tpublic override bool CanRead {\n\t\t\tget {return true;}\n\t\t}\n\n\t\tpublic override bool CanSeek {\n\t\t\tget {return false;}\n\t\t}\n\t\tpublic override long Length {\n\t\t\tget {throw new System.NotSupportedException();}\n\t\t}\n\t\tpublic override long Position {\n\t\t\tget {throw new System.NotSupportedException();}\n\t\t\tset {throw new System.NotSupportedException();}\n\t\t}\n\t\tpublic override long Seek(long offset, System.IO.SeekOrigin origin) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\t\tpublic override void SetLength(long value){\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\n\t\tpublic override bool CanWrite{get{return false;}}\n\t\tpublic override System.IAsyncResult BeginWrite(byte[] buffer, int offset,\n\t\t\t\tint count, System.AsyncCallback callback, object state) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\t\tpublic override void Write(byte[] buffer, int offset, int count) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\n\t\tpublic override void Flush() {}\n" }, { "path": "csharp/org/brotli/dec/BitReader.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// Bit reading helpers.\r\n\tinternal sealed class BitReader\r\n\t{\r\n\t\t/// \r\n\t\t/// Input byte buffer, consist of a ring-buffer and a \"slack\" region where bytes from the start of\r\n\t\t/// the ring-buffer are copied.\r\n\t\t/// \r\n\t\tprivate const int Capacity = 1024;\r\n\r\n\t\tprivate const int Slack = 16;\r\n\r\n\t\tprivate const int IntBufferSize = Capacity + Slack;\r\n\r\n\t\tprivate const int ByteReadSize = Capacity << 2;\r\n\r\n\t\tprivate const int ByteBufferSize = IntBufferSize << 2;\r\n\r\n\t\tprivate readonly byte[] byteBuffer = new byte[ByteBufferSize];\r\n\r\n\t\tprivate readonly int[] intBuffer = new int[IntBufferSize];\r\n\r\n\t\tprivate readonly Org.Brotli.Dec.IntReader intReader = new Org.Brotli.Dec.IntReader();\r\n\r\n\t\tprivate System.IO.Stream input;\r\n\r\n\t\t/// Input stream is finished.\r\n\t\tprivate bool endOfStreamReached;\r\n\r\n\t\t/// Pre-fetched bits.\r\n\t\tinternal long accumulator;\r\n\r\n\t\t/// Current bit-reading position in accumulator.\r\n\t\tinternal int bitOffset;\r\n\r\n\t\t/// Offset of next item in intBuffer.\r\n\t\tprivate int intOffset;\r\n\r\n\t\tprivate int tailBytes = 0;\r\n\r\n\t\t/* Number of bytes in unfinished \"int\" item. */\r\n\t\t/// Fills up the input buffer.\r\n\t\t/// \r\n\t\t/// Fills up the input buffer.\r\n\t\t///

No-op if there are at least 36 bytes present after current position.\r\n\t\t///

After encountering the end of the input stream, 64 additional zero bytes are copied to the\r\n\t\t/// buffer.\r\n\t\t/// \r\n\t\tinternal static void ReadMoreInput(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\t// TODO: Split to check and read; move read outside of decoding loop.\r\n\t\t\tif (br.intOffset <= Capacity - 9)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tif (br.endOfStreamReached)\r\n\t\t\t{\r\n\t\t\t\tif (IntAvailable(br) >= -2)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn;\r\n\t\t\t\t}\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"No more input\");\r\n\t\t\t}\r\n\t\t\tint readOffset = br.intOffset << 2;\r\n\t\t\tint bytesRead = ByteReadSize - readOffset;\r\n\t\t\tSystem.Array.Copy(br.byteBuffer, readOffset, br.byteBuffer, 0, bytesRead);\r\n\t\t\tbr.intOffset = 0;\r\n\t\t\ttry\r\n\t\t\t{\r\n\t\t\t\twhile (bytesRead < ByteReadSize)\r\n\t\t\t\t{\r\n\t\t\t\t\tint len = br.input.Read(br.byteBuffer, bytesRead, ByteReadSize - bytesRead);\r\n\t\t\t\t\t// EOF is -1 in Java, but 0 in C#.\r\n\t\t\t\t\tif (len <= 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tbr.endOfStreamReached = true;\r\n\t\t\t\t\t\tbr.tailBytes = bytesRead;\r\n\t\t\t\t\t\tbytesRead += 3;\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\t\t\t\t\tbytesRead += len;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tcatch (System.IO.IOException e)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Failed to read input\", e);\r\n\t\t\t}\r\n\t\t\tOrg.Brotli.Dec.IntReader.Convert(br.intReader, bytesRead >> 2);\r\n\t\t}\r\n\r\n\t\tinternal static void CheckHealth(Org.Brotli.Dec.BitReader br, bool endOfStream)\r\n\t\t{\r\n\t\t\tif (!br.endOfStreamReached)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tint byteOffset = (br.intOffset << 2) + ((br.bitOffset + 7) >> 3) - 8;\r\n\t\t\tif (byteOffset > br.tailBytes)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Read after end\");\r\n\t\t\t}\r\n\t\t\tif (endOfStream && (byteOffset != br.tailBytes))\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Unused bytes after end\");\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t///

Advances the Read buffer by 5 bytes to make room for reading next 24 bits.\r\n\t\tinternal static void FillBitWindow(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tif (br.bitOffset >= 32)\r\n\t\t\t{\r\n\t\t\t\tbr.accumulator = ((long)br.intBuffer[br.intOffset++] << 32) | ((long)(((ulong)br.accumulator) >> 32));\r\n\t\t\t\tbr.bitOffset -= 32;\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t/// Reads the specified number of bits from Read Buffer.\r\n\t\tinternal static int ReadBits(Org.Brotli.Dec.BitReader br, int n)\r\n\t\t{\r\n\t\t\tFillBitWindow(br);\r\n\t\t\tint val = (int)((long)(((ulong)br.accumulator) >> br.bitOffset)) & ((1 << n) - 1);\r\n\t\t\tbr.bitOffset += n;\r\n\t\t\treturn val;\r\n\t\t}\r\n\r\n\t\t/// Initialize bit reader.\r\n\t\t/// \r\n\t\t/// Initialize bit reader.\r\n\t\t///

Initialisation turns bit reader to a ready state. Also a number of bytes is prefetched to\r\n\t\t/// accumulator. Because of that this method may block until enough data could be read from input.\r\n\t\t/// \r\n\t\t/// BitReader POJO\r\n\t\t/// data source\r\n\t\tinternal static void Init(Org.Brotli.Dec.BitReader br, System.IO.Stream input)\r\n\t\t{\r\n\t\t\tif (br.input != null)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.InvalidOperationException(\"Bit reader already has associated input stream\");\r\n\t\t\t}\r\n\t\t\tOrg.Brotli.Dec.IntReader.Init(br.intReader, br.byteBuffer, br.intBuffer);\r\n\t\t\tbr.input = input;\r\n\t\t\tbr.accumulator = 0;\r\n\t\t\tbr.bitOffset = 64;\r\n\t\t\tbr.intOffset = Capacity;\r\n\t\t\tbr.endOfStreamReached = false;\r\n\t\t\tPrepare(br);\r\n\t\t}\r\n\r\n\t\tprivate static void Prepare(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tReadMoreInput(br);\r\n\t\t\tCheckHealth(br, false);\r\n\t\t\tFillBitWindow(br);\r\n\t\t\tFillBitWindow(br);\r\n\t\t}\r\n\r\n\t\tinternal static void Reload(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tif (br.bitOffset == 64)\r\n\t\t\t{\r\n\t\t\t\tPrepare(br);\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\tinternal static void Close(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tSystem.IO.Stream @is = br.input;\r\n\t\t\tbr.input = null;\r\n\t\t\tif (@is != null)\r\n\t\t\t{\r\n\t\t\t\t@is.Close();\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\tinternal static void JumpToByteBoundary(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tint padding = (64 - br.bitOffset) & 7;\r\n\t\t\tif (padding != 0)\r\n\t\t\t{\r\n\t\t\t\tint paddingBits = Org.Brotli.Dec.BitReader.ReadBits(br, padding);\r\n\t\t\t\tif (paddingBits != 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Corrupted padding bits\");\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\tinternal static int IntAvailable(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tint limit = Capacity;\r\n\t\t\tif (br.endOfStreamReached)\r\n\t\t\t{\r\n\t\t\t\tlimit = (br.tailBytes + 3) >> 2;\r\n\t\t\t}\r\n\t\t\treturn limit - br.intOffset;\r\n\t\t}\r\n\r\n\t\tinternal static void CopyBytes(Org.Brotli.Dec.BitReader br, byte[] data, int offset, int length)\r\n\t\t{\r\n\t\t\tif ((br.bitOffset & 7) != 0)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Unaligned copyBytes\");\r\n\t\t\t}\r\n\t\t\t// Drain accumulator.\r\n\t\t\twhile ((br.bitOffset != 64) && (length != 0))\r\n\t\t\t{\r\n\t\t\t\tdata[offset++] = unchecked((byte)((long)(((ulong)br.accumulator) >> br.bitOffset)));\r\n\t\t\t\tbr.bitOffset += 8;\r\n\t\t\t\tlength--;\r\n\t\t\t}\r\n\t\t\tif (length == 0)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\t// Get data from shadow buffer with \"sizeof(int)\" granularity.\r\n\t\t\tint copyInts = System.Math.Min(IntAvailable(br), length >> 2);\r\n\t\t\tif (copyInts > 0)\r\n\t\t\t{\r\n\t\t\t\tint readOffset = br.intOffset << 2;\r\n\t\t\t\tSystem.Array.Copy(br.byteBuffer, readOffset, data, offset, copyInts << 2);\r\n\t\t\t\toffset += copyInts << 2;\r\n\t\t\t\tlength -= copyInts << 2;\r\n\t\t\t\tbr.intOffset += copyInts;\r\n\t\t\t}\r\n\t\t\tif (length == 0)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\t// Read tail bytes.\r\n\t\t\tif (IntAvailable(br) > 0)\r\n\t\t\t{\r\n\t\t\t\t// length = 1..3\r\n\t\t\t\tFillBitWindow(br);\r\n\t\t\t\twhile (length != 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tdata[offset++] = unchecked((byte)((long)(((ulong)br.accumulator) >> br.bitOffset)));\r\n\t\t\t\t\tbr.bitOffset += 8;\r\n\t\t\t\t\tlength--;\r\n\t\t\t\t}\r\n\t\t\t\tCheckHealth(br, false);\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\t// Now it is possible to copy bytes directly.\r\n\t\t\ttry\r\n\t\t\t{\r\n\t\t\t\twhile (length > 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tint len = br.input.Read(data, offset, length);\r\n\t\t\t\t\tif (len == -1)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Unexpected end of input\");\r\n\t\t\t\t\t}\r\n\t\t\t\t\toffset += len;\r\n\t\t\t\t\tlength -= len;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tcatch (System.IO.IOException e)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Failed to read input\", e);\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/BitReaderTest.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t///

\r\n\t/// Tests for\r\n\t/// \r\n\t/// .\r\n\t/// \r\n\tpublic class BitReaderTest\r\n\t{\r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestReadAfterEos()\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader reader = new Org.Brotli.Dec.BitReader();\r\n\t\t\tOrg.Brotli.Dec.BitReader.Init(reader, new System.IO.MemoryStream(new byte[1]));\r\n\t\t\tOrg.Brotli.Dec.BitReader.ReadBits(reader, 9);\r\n\t\t\ttry\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.CheckHealth(reader, false);\r\n\t\t\t}\r\n\t\t\tcatch (Org.Brotli.Dec.BrotliRuntimeException)\r\n\t\t\t{\r\n\t\t\t\t// This exception is expected.\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tNUnit.Framework.Assert.Fail(\"BrotliRuntimeException should have been thrown by BitReader.checkHealth\");\r\n\t\t}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/BrotliInputStream.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// \r\n\t/// \r\n\t/// decorator that decompresses brotli data.\r\n\t///

Not thread-safe.\r\n\t///

\r\n\tpublic class BrotliInputStream : System.IO.Stream\r\n\t{\r\n\t\tpublic const int DefaultInternalBufferSize = 16384;\r\n\r\n\t\t/// Internal buffer used for efficient byte-by-byte reading.\r\n\t\tprivate byte[] buffer;\r\n\r\n\t\t/// Number of decoded but still unused bytes in internal buffer.\r\n\t\tprivate int remainingBufferBytes;\r\n\r\n\t\t/// Next unused byte offset.\r\n\t\tprivate int bufferOffset;\r\n\r\n\t\t/// Decoder state.\r\n\t\tprivate readonly Org.Brotli.Dec.State state = new Org.Brotli.Dec.State();\r\n\r\n\t\t/// \r\n\t\t/// Creates a\r\n\t\t/// \r\n\t\t/// wrapper that decompresses brotli data.\r\n\t\t///

For byte-by-byte reading (\r\n\t\t/// \r\n\t\t/// ) internal buffer with\r\n\t\t/// \r\n\t\t/// size is allocated and used.\r\n\t\t///

Will block the thread until first kilobyte of data of source is available.\r\n\t\t///

\r\n\t\t/// underlying data source\r\n\t\t/// in case of corrupted data or source stream problems\r\n\t\tpublic BrotliInputStream(System.IO.Stream source)\r\n\t\t\t: this(source, DefaultInternalBufferSize, null)\r\n\t\t{\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t/// Creates a\r\n\t\t/// \r\n\t\t/// wrapper that decompresses brotli data.\r\n\t\t///

For byte-by-byte reading (\r\n\t\t/// \r\n\t\t/// ) internal buffer of specified size is\r\n\t\t/// allocated and used.\r\n\t\t///

Will block the thread until first kilobyte of data of source is available.\r\n\t\t///

\r\n\t\t/// compressed data source\r\n\t\t/// \r\n\t\t/// size of internal buffer used in case of\r\n\t\t/// byte-by-byte reading\r\n\t\t/// \r\n\t\t/// in case of corrupted data or source stream problems\r\n\t\tpublic BrotliInputStream(System.IO.Stream source, int byteReadBufferSize)\r\n\t\t\t: this(source, byteReadBufferSize, null)\r\n\t\t{\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t/// Creates a\r\n\t\t/// \r\n\t\t/// wrapper that decompresses brotli data.\r\n\t\t///

For byte-by-byte reading (\r\n\t\t/// \r\n\t\t/// ) internal buffer of specified size is\r\n\t\t/// allocated and used.\r\n\t\t///

Will block the thread until first kilobyte of data of source is available.\r\n\t\t///

\r\n\t\t/// compressed data source\r\n\t\t/// \r\n\t\t/// size of internal buffer used in case of\r\n\t\t/// byte-by-byte reading\r\n\t\t/// \r\n\t\t/// \r\n\t\t/// custom dictionary data;\r\n\t\t/// \r\n\t\t/// if not used\r\n\t\t/// \r\n\t\t/// in case of corrupted data or source stream problems\r\n\t\tpublic BrotliInputStream(System.IO.Stream source, int byteReadBufferSize, byte[] customDictionary)\r\n\t\t{\r\n\t\t\tif (byteReadBufferSize <= 0)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.ArgumentException(\"Bad buffer size:\" + byteReadBufferSize);\r\n\t\t\t}\r\n\t\t\telse if (source == null)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.ArgumentException(\"source is null\");\r\n\t\t\t}\r\n\t\t\tthis.buffer = new byte[byteReadBufferSize];\r\n\t\t\tthis.remainingBufferBytes = 0;\r\n\t\t\tthis.bufferOffset = 0;\r\n\t\t\ttry\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.State.SetInput(state, source);\r\n\t\t\t}\r\n\t\t\tcatch (Org.Brotli.Dec.BrotliRuntimeException ex)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.IO.IOException(\"Brotli decoder initialization failed\", ex);\r\n\t\t\t}\r\n\t\t\tif (customDictionary != null)\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.Decode.SetCustomDictionary(state, customDictionary);\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t/// \r\n\t\tpublic override void Close()\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.State.Close(state);\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t/// \r\n\t\tpublic override int ReadByte()\r\n\t\t{\r\n\t\t\tif (bufferOffset >= remainingBufferBytes)\r\n\t\t\t{\r\n\t\t\t\tremainingBufferBytes = Read(buffer, 0, buffer.Length);\r\n\t\t\t\tbufferOffset = 0;\r\n\t\t\t\tif (remainingBufferBytes == -1)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn -1;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\treturn buffer[bufferOffset++] & unchecked((int)(0xFF));\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t/// \r\n\t\tpublic override int Read(byte[] destBuffer, int destOffset, int destLen)\r\n\t\t{\r\n\t\t\tif (destOffset < 0)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.ArgumentException(\"Bad offset: \" + destOffset);\r\n\t\t\t}\r\n\t\t\telse if (destLen < 0)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.ArgumentException(\"Bad length: \" + destLen);\r\n\t\t\t}\r\n\t\t\telse if (destOffset + destLen > destBuffer.Length)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.ArgumentException(\"Buffer overflow: \" + (destOffset + destLen) + \" > \" + destBuffer.Length);\r\n\t\t\t}\r\n\t\t\telse if (destLen == 0)\r\n\t\t\t{\r\n\t\t\t\treturn 0;\r\n\t\t\t}\r\n\t\t\tint copyLen = System.Math.Max(remainingBufferBytes - bufferOffset, 0);\r\n\t\t\tif (copyLen != 0)\r\n\t\t\t{\r\n\t\t\t\tcopyLen = System.Math.Min(copyLen, destLen);\r\n\t\t\t\tSystem.Array.Copy(buffer, bufferOffset, destBuffer, destOffset, copyLen);\r\n\t\t\t\tbufferOffset += copyLen;\r\n\t\t\t\tdestOffset += copyLen;\r\n\t\t\t\tdestLen -= copyLen;\r\n\t\t\t\tif (destLen == 0)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn copyLen;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\ttry\r\n\t\t\t{\r\n\t\t\t\tstate.output = destBuffer;\r\n\t\t\t\tstate.outputOffset = destOffset;\r\n\t\t\t\tstate.outputLength = destLen;\r\n\t\t\t\tstate.outputUsed = 0;\r\n\t\t\t\tOrg.Brotli.Dec.Decode.Decompress(state);\r\n\t\t\t\tif (state.outputUsed == 0)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn -1;\r\n\t\t\t\t}\r\n\t\t\t\treturn state.outputUsed + copyLen;\r\n\t\t\t}\r\n\t\t\tcatch (Org.Brotli.Dec.BrotliRuntimeException ex)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.IO.IOException(\"Brotli stream decoding failed\", ex);\r\n\t\t\t}\r\n\t\t}\r\n\t\t// <{[INJECTED CODE]}>\n\t\tpublic override bool CanRead {\n\t\t\tget {return true;}\n\t\t}\n\n\t\tpublic override bool CanSeek {\n\t\t\tget {return false;}\n\t\t}\n\t\tpublic override long Length {\n\t\t\tget {throw new System.NotSupportedException();}\n\t\t}\n\t\tpublic override long Position {\n\t\t\tget {throw new System.NotSupportedException();}\n\t\t\tset {throw new System.NotSupportedException();}\n\t\t}\n\t\tpublic override long Seek(long offset, System.IO.SeekOrigin origin) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\t\tpublic override void SetLength(long value){\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\n\t\tpublic override bool CanWrite{get{return false;}}\n\t\tpublic override System.IAsyncResult BeginWrite(byte[] buffer, int offset,\n\t\t\t\tint count, System.AsyncCallback callback, object state) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\t\tpublic override void Write(byte[] buffer, int offset, int count) {\n\t\t\tthrow new System.NotSupportedException();\n\t\t}\n\n\t\tpublic override void Flush() {}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/BrotliRuntimeException.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// Unchecked exception used internally.\r\n\t[System.Serializable]\r\n\tinternal class BrotliRuntimeException : System.Exception\r\n\t{\r\n\t\tinternal BrotliRuntimeException(string message)\r\n\t\t\t: base(message)\r\n\t\t{\r\n\t\t}\r\n\r\n\t\tinternal BrotliRuntimeException(string message, System.Exception cause)\r\n\t\t\t: base(message, cause)\r\n\t\t{\r\n\t\t}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/Context.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// Common context lookup table for all context modes.\r\n\tinternal sealed class Context\r\n\t{\r\n\t\tinternal static readonly int[] Lookup = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 12, 16, 12, 12, 20, 12, 16, 24, 28, 12, 12, 32, 12, 36, 12, 44, 44, 44, 44, 44, 44, 44, 44\r\n\t\t\t, 44, 44, 32, 32, 24, 40, 28, 12, 12, 48, 52, 52, 52, 48, 52, 52, 52, 48, 52, 52, 52, 52, 52, 48, 52, 52, 52, 52, 52, 48, 52, 52, 52, 52, 52, 24, 12, 28, 12, 12, 12, 56, 60, 60, 60, 56, 60, 60, 60, 56, 60, 60, 60, 60, 60, 56, 60, 60, 60, 60\r\n\t\t\t, 60, 56, 60, 60, 60, 60, 60, 24, 12, 28, 12, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, \r\n\t\t\t2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \r\n\t\t\t0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, \r\n\t\t\t1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \r\n\t\t\t0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, \r\n\t\t\t0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \r\n\t\t\t3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, \r\n\t\t\t4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, \r\n\t\t\t6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 0, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, \r\n\t\t\t16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, \r\n\t\t\t24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, \r\n\t\t\t32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, \r\n\t\t\t40, 40, 40, 40, 40, 40, 40, 40, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 56, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38\r\n\t\t\t, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, \r\n\t\t\t37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35\r\n\t\t\t, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, \r\n\t\t\t34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, \r\n\t\t\t10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, \r\n\t\t\t25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31, 32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 35, 35, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 39, 39, 39, 39, \r\n\t\t\t40, 40, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 43, 43, 43, 43, 44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47, 48, 48, 48, 48, 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51, 52, 52, 52, 52, 53, 53, 53, 53, 54, 54, 54, 54, \r\n\t\t\t55, 55, 55, 55, 56, 56, 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59, 60, 60, 60, 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63, 63, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \r\n\t\t\t0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \r\n\t\t\t0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \r\n\t\t\t0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };\r\n\r\n\t\tinternal static readonly int[] LookupOffsets = new int[] { 1024, 1536, 1280, 1536, 0, 256, 768, 512 };\r\n\t\t// CONTEXT_UTF8, last byte.\r\n\t\t// ASCII range.\r\n\t\t// UTF8 continuation byte range.\r\n\t\t// UTF8 lead byte range.\r\n\t\t// CONTEXT_UTF8 second last byte.\r\n\t\t// ASCII range.\r\n\t\t// UTF8 continuation byte range.\r\n\t\t// UTF8 lead byte range.\r\n\t\t// CONTEXT_SIGNED, second last byte.\r\n\t\t// CONTEXT_SIGNED, last byte, same as the above values shifted by 3 bits.\r\n\t\t// CONTEXT_LSB6, last byte.\r\n\t\t// CONTEXT_MSB6, last byte.\r\n\t\t// CONTEXT_{M,L}SB6, second last byte,\r\n\t\t// CONTEXT_LSB6\r\n\t\t// CONTEXT_MSB6\r\n\t\t// CONTEXT_UTF8\r\n\t\t// CONTEXT_SIGNED\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/Decode.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// API for Brotli decompression.\r\n\tinternal sealed class Decode\r\n\t{\r\n\t\tprivate const int DefaultCodeLength = 8;\r\n\r\n\t\tprivate const int CodeLengthRepeatCode = 16;\r\n\r\n\t\tprivate const int NumLiteralCodes = 256;\r\n\r\n\t\tprivate const int NumInsertAndCopyCodes = 704;\r\n\r\n\t\tprivate const int NumBlockLengthCodes = 26;\r\n\r\n\t\tprivate const int LiteralContextBits = 6;\r\n\r\n\t\tprivate const int DistanceContextBits = 2;\r\n\r\n\t\tprivate const int HuffmanTableBits = 8;\r\n\r\n\t\tprivate const int HuffmanTableMask = unchecked((int)(0xFF));\r\n\r\n\t\tprivate const int CodeLengthCodes = 18;\r\n\r\n\t\tprivate static readonly int[] CodeLengthCodeOrder = new int[] { 1, 2, 3, 4, 0, 5, 17, 6, 16, 7, 8, 9, 10, 11, 12, 13, 14, 15 };\r\n\r\n\t\tprivate const int NumDistanceShortCodes = 16;\r\n\r\n\t\tprivate static readonly int[] DistanceShortCodeIndexOffset = new int[] { 3, 2, 1, 0, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2 };\r\n\r\n\t\tprivate static readonly int[] DistanceShortCodeValueOffset = new int[] { 0, 0, 0, 0, -1, 1, -2, 2, -3, 3, -1, 1, -2, 2, -3, 3 };\r\n\r\n\t\t/// Static Huffman code for the code length code lengths.\r\n\t\tprivate static readonly int[] FixedTable = new int[] { unchecked((int)(0x020000)), unchecked((int)(0x020004)), unchecked((int)(0x020003)), unchecked((int)(0x030002)), unchecked((int)(0x020000)), unchecked((int)(0x020004)), unchecked((int)(0x020003\r\n\t\t\t)), unchecked((int)(0x040001)), unchecked((int)(0x020000)), unchecked((int)(0x020004)), unchecked((int)(0x020003)), unchecked((int)(0x030002)), unchecked((int)(0x020000)), unchecked((int)(0x020004)), unchecked((int)(0x020003)), unchecked((int\r\n\t\t\t)(0x040005)) };\r\n\r\n\t\t/// Decodes a number in the range [0..255], by reading 1 - 11 bits.\r\n\t\tprivate static int DecodeVarLenUnsignedByte(Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tif (Org.Brotli.Dec.BitReader.ReadBits(br, 1) != 0)\r\n\t\t\t{\r\n\t\t\t\tint n = Org.Brotli.Dec.BitReader.ReadBits(br, 3);\r\n\t\t\t\tif (n == 0)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn 1;\r\n\t\t\t\t}\r\n\t\t\t\telse\r\n\t\t\t\t{\r\n\t\t\t\t\treturn Org.Brotli.Dec.BitReader.ReadBits(br, n) + (1 << n);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\treturn 0;\r\n\t\t}\r\n\r\n\t\tprivate static void DecodeMetaBlockLength(Org.Brotli.Dec.BitReader br, Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tstate.inputEnd = Org.Brotli.Dec.BitReader.ReadBits(br, 1) == 1;\r\n\t\t\tstate.metaBlockLength = 0;\r\n\t\t\tstate.isUncompressed = false;\r\n\t\t\tstate.isMetadata = false;\r\n\t\t\tif (state.inputEnd && Org.Brotli.Dec.BitReader.ReadBits(br, 1) != 0)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tint sizeNibbles = Org.Brotli.Dec.BitReader.ReadBits(br, 2) + 4;\r\n\t\t\tif (sizeNibbles == 7)\r\n\t\t\t{\r\n\t\t\t\tstate.isMetadata = true;\r\n\t\t\t\tif (Org.Brotli.Dec.BitReader.ReadBits(br, 1) != 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Corrupted reserved bit\");\r\n\t\t\t\t}\r\n\t\t\t\tint sizeBytes = Org.Brotli.Dec.BitReader.ReadBits(br, 2);\r\n\t\t\t\tif (sizeBytes == 0)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn;\r\n\t\t\t\t}\r\n\t\t\t\tfor (int i = 0; i < sizeBytes; i++)\r\n\t\t\t\t{\r\n\t\t\t\t\tint bits = Org.Brotli.Dec.BitReader.ReadBits(br, 8);\r\n\t\t\t\t\tif (bits == 0 && i + 1 == sizeBytes && sizeBytes > 1)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Exuberant nibble\");\r\n\t\t\t\t\t}\r\n\t\t\t\t\tstate.metaBlockLength |= bits << (i * 8);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\tfor (int i = 0; i < sizeNibbles; i++)\r\n\t\t\t\t{\r\n\t\t\t\t\tint bits = Org.Brotli.Dec.BitReader.ReadBits(br, 4);\r\n\t\t\t\t\tif (bits == 0 && i + 1 == sizeNibbles && sizeNibbles > 4)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Exuberant nibble\");\r\n\t\t\t\t\t}\r\n\t\t\t\t\tstate.metaBlockLength |= bits << (i * 4);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tstate.metaBlockLength++;\r\n\t\t\tif (!state.inputEnd)\r\n\t\t\t{\r\n\t\t\t\tstate.isUncompressed = Org.Brotli.Dec.BitReader.ReadBits(br, 1) == 1;\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t/// Decodes the next Huffman code from bit-stream.\r\n\t\tprivate static int ReadSymbol(int[] table, int offset, Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tint val = (int)((long)(((ulong)br.accumulator) >> br.bitOffset));\r\n\t\t\toffset += val & HuffmanTableMask;\r\n\t\t\tint bits = table[offset] >> 16;\r\n\t\t\tint sym = table[offset] & unchecked((int)(0xFFFF));\r\n\t\t\tif (bits <= HuffmanTableBits)\r\n\t\t\t{\r\n\t\t\t\tbr.bitOffset += bits;\r\n\t\t\t\treturn sym;\r\n\t\t\t}\r\n\t\t\toffset += sym;\r\n\t\t\tint mask = (1 << bits) - 1;\r\n\t\t\toffset += (int)(((uint)(val & mask)) >> HuffmanTableBits);\r\n\t\t\tbr.bitOffset += ((table[offset] >> 16) + HuffmanTableBits);\r\n\t\t\treturn table[offset] & unchecked((int)(0xFFFF));\r\n\t\t}\r\n\r\n\t\tprivate static int ReadBlockLength(int[] table, int offset, Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\tint code = ReadSymbol(table, offset, br);\r\n\t\t\tint n = Org.Brotli.Dec.Prefix.BlockLengthNBits[code];\r\n\t\t\treturn Org.Brotli.Dec.Prefix.BlockLengthOffset[code] + Org.Brotli.Dec.BitReader.ReadBits(br, n);\r\n\t\t}\r\n\r\n\t\tprivate static int TranslateShortCodes(int code, int[] ringBuffer, int index)\r\n\t\t{\r\n\t\t\tif (code < NumDistanceShortCodes)\r\n\t\t\t{\r\n\t\t\t\tindex += DistanceShortCodeIndexOffset[code];\r\n\t\t\t\tindex &= 3;\r\n\t\t\t\treturn ringBuffer[index] + DistanceShortCodeValueOffset[code];\r\n\t\t\t}\r\n\t\t\treturn code - NumDistanceShortCodes + 1;\r\n\t\t}\r\n\r\n\t\tprivate static void MoveToFront(int[] v, int index)\r\n\t\t{\r\n\t\t\tint value = v[index];\r\n\t\t\tfor (; index > 0; index--)\r\n\t\t\t{\r\n\t\t\t\tv[index] = v[index - 1];\r\n\t\t\t}\r\n\t\t\tv[0] = value;\r\n\t\t}\r\n\r\n\t\tprivate static void InverseMoveToFrontTransform(byte[] v, int vLen)\r\n\t\t{\r\n\t\t\tint[] mtf = new int[256];\r\n\t\t\tfor (int i = 0; i < 256; i++)\r\n\t\t\t{\r\n\t\t\t\tmtf[i] = i;\r\n\t\t\t}\r\n\t\t\tfor (int i = 0; i < vLen; i++)\r\n\t\t\t{\r\n\t\t\t\tint index = v[i] & unchecked((int)(0xFF));\r\n\t\t\t\tv[i] = unchecked((byte)mtf[index]);\r\n\t\t\t\tif (index != 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tMoveToFront(mtf, index);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\tprivate static void ReadHuffmanCodeLengths(int[] codeLengthCodeLengths, int numSymbols, int[] codeLengths, Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tint symbol = 0;\r\n\t\t\tint prevCodeLen = DefaultCodeLength;\r\n\t\t\tint repeat = 0;\r\n\t\t\tint repeatCodeLen = 0;\r\n\t\t\tint space = 32768;\r\n\t\t\tint[] table = new int[32];\r\n\t\t\tOrg.Brotli.Dec.Huffman.BuildHuffmanTable(table, 0, 5, codeLengthCodeLengths, CodeLengthCodes);\r\n\t\t\twhile (symbol < numSymbols && space > 0)\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\tint p = (int)(((long)(((ulong)br.accumulator) >> br.bitOffset))) & 31;\r\n\t\t\t\tbr.bitOffset += table[p] >> 16;\r\n\t\t\t\tint codeLen = table[p] & unchecked((int)(0xFFFF));\r\n\t\t\t\tif (codeLen < CodeLengthRepeatCode)\r\n\t\t\t\t{\r\n\t\t\t\t\trepeat = 0;\r\n\t\t\t\t\tcodeLengths[symbol++] = codeLen;\r\n\t\t\t\t\tif (codeLen != 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tprevCodeLen = codeLen;\r\n\t\t\t\t\t\tspace -= 32768 >> codeLen;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\telse\r\n\t\t\t\t{\r\n\t\t\t\t\tint extraBits = codeLen - 14;\r\n\t\t\t\t\tint newLen = 0;\r\n\t\t\t\t\tif (codeLen == CodeLengthRepeatCode)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tnewLen = prevCodeLen;\r\n\t\t\t\t\t}\r\n\t\t\t\t\tif (repeatCodeLen != newLen)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\trepeat = 0;\r\n\t\t\t\t\t\trepeatCodeLen = newLen;\r\n\t\t\t\t\t}\r\n\t\t\t\t\tint oldRepeat = repeat;\r\n\t\t\t\t\tif (repeat > 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\trepeat -= 2;\r\n\t\t\t\t\t\trepeat <<= extraBits;\r\n\t\t\t\t\t}\r\n\t\t\t\t\trepeat += Org.Brotli.Dec.BitReader.ReadBits(br, extraBits) + 3;\r\n\t\t\t\t\tint repeatDelta = repeat - oldRepeat;\r\n\t\t\t\t\tif (symbol + repeatDelta > numSymbols)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"symbol + repeatDelta > numSymbols\");\r\n\t\t\t\t\t}\r\n\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\tfor (int i = 0; i < repeatDelta; i++)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tcodeLengths[symbol++] = repeatCodeLen;\r\n\t\t\t\t\t}\r\n\t\t\t\t\tif (repeatCodeLen != 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tspace -= repeatDelta << (15 - repeatCodeLen);\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tif (space != 0)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Unused space\");\r\n\t\t\t}\r\n\t\t\t// COV_NF_LINE\r\n\t\t\t// TODO: Pass max_symbol to Huffman table builder instead?\r\n\t\t\tOrg.Brotli.Dec.Utils.FillWithZeroes(codeLengths, symbol, numSymbols - symbol);\r\n\t\t}\r\n\r\n\t\t// TODO: Use specialized versions for smaller tables.\r\n\t\tinternal static void ReadHuffmanCode(int alphabetSize, int[] table, int offset, Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tbool ok = true;\r\n\t\t\tint simpleCodeOrSkip;\r\n\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t// TODO: Avoid allocation.\r\n\t\t\tint[] codeLengths = new int[alphabetSize];\r\n\t\t\tsimpleCodeOrSkip = Org.Brotli.Dec.BitReader.ReadBits(br, 2);\r\n\t\t\tif (simpleCodeOrSkip == 1)\r\n\t\t\t{\r\n\t\t\t\t// Read symbols, codes & code lengths directly.\r\n\t\t\t\tint maxBitsCounter = alphabetSize - 1;\r\n\t\t\t\tint maxBits = 0;\r\n\t\t\t\tint[] symbols = new int[4];\r\n\t\t\t\tint numSymbols = Org.Brotli.Dec.BitReader.ReadBits(br, 2) + 1;\r\n\t\t\t\twhile (maxBitsCounter != 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tmaxBitsCounter >>= 1;\r\n\t\t\t\t\tmaxBits++;\r\n\t\t\t\t}\r\n\t\t\t\t// TODO: uncomment when codeLengths is reused.\r\n\t\t\t\t// Utils.fillWithZeroes(codeLengths, 0, alphabetSize);\r\n\t\t\t\tfor (int i = 0; i < numSymbols; i++)\r\n\t\t\t\t{\r\n\t\t\t\t\tsymbols[i] = Org.Brotli.Dec.BitReader.ReadBits(br, maxBits) % alphabetSize;\r\n\t\t\t\t\tcodeLengths[symbols[i]] = 2;\r\n\t\t\t\t}\r\n\t\t\t\tcodeLengths[symbols[0]] = 1;\r\n\t\t\t\tswitch (numSymbols)\r\n\t\t\t\t{\r\n\t\t\t\t\tcase 1:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase 2:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tok = symbols[0] != symbols[1];\r\n\t\t\t\t\t\tcodeLengths[symbols[1]] = 1;\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase 3:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tok = symbols[0] != symbols[1] && symbols[0] != symbols[2] && symbols[1] != symbols[2];\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase 4:\r\n\t\t\t\t\tdefault:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tok = symbols[0] != symbols[1] && symbols[0] != symbols[2] && symbols[0] != symbols[3] && symbols[1] != symbols[2] && symbols[1] != symbols[3] && symbols[2] != symbols[3];\r\n\t\t\t\t\t\tif (Org.Brotli.Dec.BitReader.ReadBits(br, 1) == 1)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tcodeLengths[symbols[2]] = 3;\r\n\t\t\t\t\t\t\tcodeLengths[symbols[3]] = 3;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tcodeLengths[symbols[0]] = 2;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\t// Decode Huffman-coded code lengths.\r\n\t\t\t\tint[] codeLengthCodeLengths = new int[CodeLengthCodes];\r\n\t\t\t\tint space = 32;\r\n\t\t\t\tint numCodes = 0;\r\n\t\t\t\tfor (int i = simpleCodeOrSkip; i < CodeLengthCodes && space > 0; i++)\r\n\t\t\t\t{\r\n\t\t\t\t\tint codeLenIdx = CodeLengthCodeOrder[i];\r\n\t\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\t\tint p = (int)((long)(((ulong)br.accumulator) >> br.bitOffset)) & 15;\r\n\t\t\t\t\t// TODO: Demultiplex FIXED_TABLE.\r\n\t\t\t\t\tbr.bitOffset += FixedTable[p] >> 16;\r\n\t\t\t\t\tint v = FixedTable[p] & unchecked((int)(0xFFFF));\r\n\t\t\t\t\tcodeLengthCodeLengths[codeLenIdx] = v;\r\n\t\t\t\t\tif (v != 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tspace -= (32 >> v);\r\n\t\t\t\t\t\tnumCodes++;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\tok = (numCodes == 1 || space == 0);\r\n\t\t\t\tReadHuffmanCodeLengths(codeLengthCodeLengths, alphabetSize, codeLengths, br);\r\n\t\t\t}\r\n\t\t\tif (!ok)\r\n\t\t\t{\r\n\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Can't readHuffmanCode\");\r\n\t\t\t}\r\n\t\t\t// COV_NF_LINE\r\n\t\t\tOrg.Brotli.Dec.Huffman.BuildHuffmanTable(table, offset, HuffmanTableBits, codeLengths, alphabetSize);\r\n\t\t}\r\n\r\n\t\tprivate static int DecodeContextMap(int contextMapSize, byte[] contextMap, Org.Brotli.Dec.BitReader br)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\tint numTrees = DecodeVarLenUnsignedByte(br) + 1;\r\n\t\t\tif (numTrees == 1)\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.Utils.FillWithZeroes(contextMap, 0, contextMapSize);\r\n\t\t\t\treturn numTrees;\r\n\t\t\t}\r\n\t\t\tbool useRleForZeros = Org.Brotli.Dec.BitReader.ReadBits(br, 1) == 1;\r\n\t\t\tint maxRunLengthPrefix = 0;\r\n\t\t\tif (useRleForZeros)\r\n\t\t\t{\r\n\t\t\t\tmaxRunLengthPrefix = Org.Brotli.Dec.BitReader.ReadBits(br, 4) + 1;\r\n\t\t\t}\r\n\t\t\tint[] table = new int[Org.Brotli.Dec.Huffman.HuffmanMaxTableSize];\r\n\t\t\tReadHuffmanCode(numTrees + maxRunLengthPrefix, table, 0, br);\r\n\t\t\tfor (int i = 0; i < contextMapSize; )\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\tint code = ReadSymbol(table, 0, br);\r\n\t\t\t\tif (code == 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tcontextMap[i] = 0;\r\n\t\t\t\t\ti++;\r\n\t\t\t\t}\r\n\t\t\t\telse if (code <= maxRunLengthPrefix)\r\n\t\t\t\t{\r\n\t\t\t\t\tint reps = (1 << code) + Org.Brotli.Dec.BitReader.ReadBits(br, code);\r\n\t\t\t\t\twhile (reps != 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tif (i >= contextMapSize)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Corrupted context map\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\t\tcontextMap[i] = 0;\r\n\t\t\t\t\t\ti++;\r\n\t\t\t\t\t\treps--;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\telse\r\n\t\t\t\t{\r\n\t\t\t\t\tcontextMap[i] = unchecked((byte)(code - maxRunLengthPrefix));\r\n\t\t\t\t\ti++;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tif (Org.Brotli.Dec.BitReader.ReadBits(br, 1) == 1)\r\n\t\t\t{\r\n\t\t\t\tInverseMoveToFrontTransform(contextMap, contextMapSize);\r\n\t\t\t}\r\n\t\t\treturn numTrees;\r\n\t\t}\r\n\r\n\t\tprivate static void DecodeBlockTypeAndLength(Org.Brotli.Dec.State state, int treeType)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader br = state.br;\r\n\t\t\tint[] ringBuffers = state.blockTypeRb;\r\n\t\t\tint offset = treeType * 2;\r\n\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\tint blockType = ReadSymbol(state.blockTypeTrees, treeType * Org.Brotli.Dec.Huffman.HuffmanMaxTableSize, br);\r\n\t\t\tstate.blockLength[treeType] = ReadBlockLength(state.blockLenTrees, treeType * Org.Brotli.Dec.Huffman.HuffmanMaxTableSize, br);\r\n\t\t\tif (blockType == 1)\r\n\t\t\t{\r\n\t\t\t\tblockType = ringBuffers[offset + 1] + 1;\r\n\t\t\t}\r\n\t\t\telse if (blockType == 0)\r\n\t\t\t{\r\n\t\t\t\tblockType = ringBuffers[offset];\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\tblockType -= 2;\r\n\t\t\t}\r\n\t\t\tif (blockType >= state.numBlockTypes[treeType])\r\n\t\t\t{\r\n\t\t\t\tblockType -= state.numBlockTypes[treeType];\r\n\t\t\t}\r\n\t\t\tringBuffers[offset] = ringBuffers[offset + 1];\r\n\t\t\tringBuffers[offset + 1] = blockType;\r\n\t\t}\r\n\r\n\t\tprivate static void DecodeLiteralBlockSwitch(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tDecodeBlockTypeAndLength(state, 0);\r\n\t\t\tint literalBlockType = state.blockTypeRb[1];\r\n\t\t\tstate.contextMapSlice = literalBlockType << LiteralContextBits;\r\n\t\t\tstate.literalTreeIndex = state.contextMap[state.contextMapSlice] & unchecked((int)(0xFF));\r\n\t\t\tstate.literalTree = state.hGroup0.trees[state.literalTreeIndex];\r\n\t\t\tint contextMode = state.contextModes[literalBlockType];\r\n\t\t\tstate.contextLookupOffset1 = Org.Brotli.Dec.Context.LookupOffsets[contextMode];\r\n\t\t\tstate.contextLookupOffset2 = Org.Brotli.Dec.Context.LookupOffsets[contextMode + 1];\r\n\t\t}\r\n\r\n\t\tprivate static void DecodeCommandBlockSwitch(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tDecodeBlockTypeAndLength(state, 1);\r\n\t\t\tstate.treeCommandOffset = state.hGroup1.trees[state.blockTypeRb[3]];\r\n\t\t}\r\n\r\n\t\tprivate static void DecodeDistanceBlockSwitch(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tDecodeBlockTypeAndLength(state, 2);\r\n\t\t\tstate.distContextMapSlice = state.blockTypeRb[5] << DistanceContextBits;\r\n\t\t}\r\n\r\n\t\tprivate static void MaybeReallocateRingBuffer(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tint newSize = state.maxRingBufferSize;\r\n\t\t\tif ((long)newSize > state.expectedTotalSize)\r\n\t\t\t{\r\n\t\t\t\t/* TODO: Handle 2GB+ cases more gracefully. */\r\n\t\t\t\tint minimalNewSize = (int)state.expectedTotalSize + state.customDictionary.Length;\r\n\t\t\t\twhile ((newSize >> 1) > minimalNewSize)\r\n\t\t\t\t{\r\n\t\t\t\t\tnewSize >>= 1;\r\n\t\t\t\t}\r\n\t\t\t\tif (!state.inputEnd && newSize < 16384 && state.maxRingBufferSize >= 16384)\r\n\t\t\t\t{\r\n\t\t\t\t\tnewSize = 16384;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tif (newSize <= state.ringBufferSize)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tint ringBufferSizeWithSlack = newSize + Org.Brotli.Dec.Dictionary.MaxTransformedWordLength;\r\n\t\t\tbyte[] newBuffer = new byte[ringBufferSizeWithSlack];\r\n\t\t\tif (state.ringBuffer != null)\r\n\t\t\t{\r\n\t\t\t\tSystem.Array.Copy(state.ringBuffer, 0, newBuffer, 0, state.ringBufferSize);\r\n\t\t\t}\r\n\t\t\telse if (state.customDictionary.Length != 0)\r\n\t\t\t{\r\n\t\t\t\t/* Prepend custom dictionary, if any. */\r\n\t\t\t\tint length = state.customDictionary.Length;\r\n\t\t\t\tint offset = 0;\r\n\t\t\t\tif (length > state.maxBackwardDistance)\r\n\t\t\t\t{\r\n\t\t\t\t\toffset = length - state.maxBackwardDistance;\r\n\t\t\t\t\tlength = state.maxBackwardDistance;\r\n\t\t\t\t}\r\n\t\t\t\tSystem.Array.Copy(state.customDictionary, offset, newBuffer, 0, length);\r\n\t\t\t\tstate.pos = length;\r\n\t\t\t\tstate.bytesToIgnore = length;\r\n\t\t\t}\r\n\t\t\tstate.ringBuffer = newBuffer;\r\n\t\t\tstate.ringBufferSize = newSize;\r\n\t\t}\r\n\r\n\t\t/// Reads next metablock header.\r\n\t\t/// decoding state\r\n\t\tprivate static void ReadMetablockInfo(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader br = state.br;\r\n\t\t\tif (state.inputEnd)\r\n\t\t\t{\r\n\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.Finished;\r\n\t\t\t\tstate.bytesToWrite = state.pos;\r\n\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\t// TODO: Reset? Do we need this?\r\n\t\t\tstate.hGroup0.codes = null;\r\n\t\t\tstate.hGroup0.trees = null;\r\n\t\t\tstate.hGroup1.codes = null;\r\n\t\t\tstate.hGroup1.trees = null;\r\n\t\t\tstate.hGroup2.codes = null;\r\n\t\t\tstate.hGroup2.trees = null;\r\n\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\tDecodeMetaBlockLength(br, state);\r\n\t\t\tif (state.metaBlockLength == 0 && !state.isMetadata)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tif (state.isUncompressed || state.isMetadata)\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.JumpToByteBoundary(br);\r\n\t\t\t\tstate.runningState = state.isMetadata ? Org.Brotli.Dec.RunningState.ReadMetadata : Org.Brotli.Dec.RunningState.CopyUncompressed;\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.CompressedBlockStart;\r\n\t\t\t}\r\n\t\t\tif (state.isMetadata)\r\n\t\t\t{\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tstate.expectedTotalSize += state.metaBlockLength;\r\n\t\t\tif (state.ringBufferSize < state.maxRingBufferSize)\r\n\t\t\t{\r\n\t\t\t\tMaybeReallocateRingBuffer(state);\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\tprivate static void ReadMetablockHuffmanCodesAndContextMaps(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader br = state.br;\r\n\t\t\tfor (int i = 0; i < 3; i++)\r\n\t\t\t{\r\n\t\t\t\tstate.numBlockTypes[i] = DecodeVarLenUnsignedByte(br) + 1;\r\n\t\t\t\tstate.blockLength[i] = 1 << 28;\r\n\t\t\t\tif (state.numBlockTypes[i] > 1)\r\n\t\t\t\t{\r\n\t\t\t\t\tReadHuffmanCode(state.numBlockTypes[i] + 2, state.blockTypeTrees, i * Org.Brotli.Dec.Huffman.HuffmanMaxTableSize, br);\r\n\t\t\t\t\tReadHuffmanCode(NumBlockLengthCodes, state.blockLenTrees, i * Org.Brotli.Dec.Huffman.HuffmanMaxTableSize, br);\r\n\t\t\t\t\tstate.blockLength[i] = ReadBlockLength(state.blockLenTrees, i * Org.Brotli.Dec.Huffman.HuffmanMaxTableSize, br);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\tstate.distancePostfixBits = Org.Brotli.Dec.BitReader.ReadBits(br, 2);\r\n\t\t\tstate.numDirectDistanceCodes = NumDistanceShortCodes + (Org.Brotli.Dec.BitReader.ReadBits(br, 4) << state.distancePostfixBits);\r\n\t\t\tstate.distancePostfixMask = (1 << state.distancePostfixBits) - 1;\r\n\t\t\tint numDistanceCodes = state.numDirectDistanceCodes + (48 << state.distancePostfixBits);\r\n\t\t\t// TODO: Reuse?\r\n\t\t\tstate.contextModes = new byte[state.numBlockTypes[0]];\r\n\t\t\tfor (int i = 0; i < state.numBlockTypes[0]; )\r\n\t\t\t{\r\n\t\t\t\t/* Ensure that less than 256 bits read between readMoreInput. */\r\n\t\t\t\tint limit = System.Math.Min(i + 96, state.numBlockTypes[0]);\r\n\t\t\t\tfor (; i < limit; ++i)\r\n\t\t\t\t{\r\n\t\t\t\t\tstate.contextModes[i] = unchecked((byte)(Org.Brotli.Dec.BitReader.ReadBits(br, 2) << 1));\r\n\t\t\t\t}\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t}\r\n\t\t\t// TODO: Reuse?\r\n\t\t\tstate.contextMap = new byte[state.numBlockTypes[0] << LiteralContextBits];\r\n\t\t\tint numLiteralTrees = DecodeContextMap(state.numBlockTypes[0] << LiteralContextBits, state.contextMap, br);\r\n\t\t\tstate.trivialLiteralContext = true;\r\n\t\t\tfor (int j = 0; j < state.numBlockTypes[0] << LiteralContextBits; j++)\r\n\t\t\t{\r\n\t\t\t\tif (state.contextMap[j] != j >> LiteralContextBits)\r\n\t\t\t\t{\r\n\t\t\t\t\tstate.trivialLiteralContext = false;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t// TODO: Reuse?\r\n\t\t\tstate.distContextMap = new byte[state.numBlockTypes[2] << DistanceContextBits];\r\n\t\t\tint numDistTrees = DecodeContextMap(state.numBlockTypes[2] << DistanceContextBits, state.distContextMap, br);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Init(state.hGroup0, NumLiteralCodes, numLiteralTrees);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Init(state.hGroup1, NumInsertAndCopyCodes, state.numBlockTypes[1]);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Init(state.hGroup2, numDistanceCodes, numDistTrees);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Decode(state.hGroup0, br);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Decode(state.hGroup1, br);\r\n\t\t\tOrg.Brotli.Dec.HuffmanTreeGroup.Decode(state.hGroup2, br);\r\n\t\t\tstate.contextMapSlice = 0;\r\n\t\t\tstate.distContextMapSlice = 0;\r\n\t\t\tstate.contextLookupOffset1 = Org.Brotli.Dec.Context.LookupOffsets[state.contextModes[0]];\r\n\t\t\tstate.contextLookupOffset2 = Org.Brotli.Dec.Context.LookupOffsets[state.contextModes[0] + 1];\r\n\t\t\tstate.literalTreeIndex = 0;\r\n\t\t\tstate.literalTree = state.hGroup0.trees[0];\r\n\t\t\tstate.treeCommandOffset = state.hGroup1.trees[0];\r\n\t\t\t// TODO: == 0?\r\n\t\t\tstate.blockTypeRb[0] = state.blockTypeRb[2] = state.blockTypeRb[4] = 1;\r\n\t\t\tstate.blockTypeRb[1] = state.blockTypeRb[3] = state.blockTypeRb[5] = 0;\r\n\t\t}\r\n\r\n\t\tprivate static void CopyUncompressedData(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tOrg.Brotli.Dec.BitReader br = state.br;\r\n\t\t\tbyte[] ringBuffer = state.ringBuffer;\r\n\t\t\t// Could happen if block ends at ring buffer end.\r\n\t\t\tif (state.metaBlockLength <= 0)\r\n\t\t\t{\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.Reload(br);\r\n\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.BlockStart;\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tint chunkLength = System.Math.Min(state.ringBufferSize - state.pos, state.metaBlockLength);\r\n\t\t\tOrg.Brotli.Dec.BitReader.CopyBytes(br, ringBuffer, state.pos, chunkLength);\r\n\t\t\tstate.metaBlockLength -= chunkLength;\r\n\t\t\tstate.pos += chunkLength;\r\n\t\t\tif (state.pos == state.ringBufferSize)\r\n\t\t\t{\r\n\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.CopyUncompressed;\r\n\t\t\t\tstate.bytesToWrite = state.ringBufferSize;\r\n\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tOrg.Brotli.Dec.BitReader.Reload(br);\r\n\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.BlockStart;\r\n\t\t}\r\n\r\n\t\tprivate static bool WriteRingBuffer(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\t/* Ignore custom dictionary bytes. */\r\n\t\t\tif (state.bytesToIgnore != 0)\r\n\t\t\t{\r\n\t\t\t\tstate.bytesWritten += state.bytesToIgnore;\r\n\t\t\t\tstate.bytesToIgnore = 0;\r\n\t\t\t}\r\n\t\t\tint toWrite = System.Math.Min(state.outputLength - state.outputUsed, state.bytesToWrite - state.bytesWritten);\r\n\t\t\tif (toWrite != 0)\r\n\t\t\t{\r\n\t\t\t\tSystem.Array.Copy(state.ringBuffer, state.bytesWritten, state.output, state.outputOffset + state.outputUsed, toWrite);\r\n\t\t\t\tstate.outputUsed += toWrite;\r\n\t\t\t\tstate.bytesWritten += toWrite;\r\n\t\t\t}\r\n\t\t\treturn state.outputUsed < state.outputLength;\r\n\t\t}\r\n\r\n\t\tinternal static void SetCustomDictionary(Org.Brotli.Dec.State state, byte[] data)\r\n\t\t{\r\n\t\t\tstate.customDictionary = (data == null) ? new byte[0] : data;\r\n\t\t}\r\n\r\n\t\t/// Actual decompress implementation.\r\n\t\tinternal static void Decompress(Org.Brotli.Dec.State state)\r\n\t\t{\r\n\t\t\tif (state.runningState == Org.Brotli.Dec.RunningState.Uninitialized)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.InvalidOperationException(\"Can't decompress until initialized\");\r\n\t\t\t}\r\n\t\t\tif (state.runningState == Org.Brotli.Dec.RunningState.Closed)\r\n\t\t\t{\r\n\t\t\t\tthrow new System.InvalidOperationException(\"Can't decompress after close\");\r\n\t\t\t}\r\n\t\t\tOrg.Brotli.Dec.BitReader br = state.br;\r\n\t\t\tint ringBufferMask = state.ringBufferSize - 1;\r\n\t\t\tbyte[] ringBuffer = state.ringBuffer;\r\n\t\t\twhile (state.runningState != Org.Brotli.Dec.RunningState.Finished)\r\n\t\t\t{\r\n\t\t\t\tswitch (state.runningState)\r\n\t\t\t\t{\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.BlockStart:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\t// TODO: extract cases to methods for the better readability.\r\n\t\t\t\t\t\tif (state.metaBlockLength < 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Invalid metablock length\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tReadMetablockInfo(state);\r\n\t\t\t\t\t\t/* Ring-buffer would be reallocated here. */\r\n\t\t\t\t\t\tringBufferMask = state.ringBufferSize - 1;\r\n\t\t\t\t\t\tringBuffer = state.ringBuffer;\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.CompressedBlockStart:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tReadMetablockHuffmanCodesAndContextMaps(state);\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t\tgoto case Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.MainLoop:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\t// Fall through\r\n\t\t\t\t\t\tif (state.metaBlockLength <= 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.BlockStart;\r\n\t\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\t\t\tif (state.blockLength[1] == 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tDecodeCommandBlockSwitch(state);\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tstate.blockLength[1]--;\r\n\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\t\t\tint cmdCode = ReadSymbol(state.hGroup1.codes, state.treeCommandOffset, br);\r\n\t\t\t\t\t\tint rangeIdx = (int)(((uint)cmdCode) >> 6);\r\n\t\t\t\t\t\tstate.distanceCode = 0;\r\n\t\t\t\t\t\tif (rangeIdx >= 2)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\trangeIdx -= 2;\r\n\t\t\t\t\t\t\tstate.distanceCode = -1;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tint insertCode = Org.Brotli.Dec.Prefix.InsertRangeLut[rangeIdx] + (((int)(((uint)cmdCode) >> 3)) & 7);\r\n\t\t\t\t\t\tint copyCode = Org.Brotli.Dec.Prefix.CopyRangeLut[rangeIdx] + (cmdCode & 7);\r\n\t\t\t\t\t\tstate.insertLength = Org.Brotli.Dec.Prefix.InsertLengthOffset[insertCode] + Org.Brotli.Dec.BitReader.ReadBits(br, Org.Brotli.Dec.Prefix.InsertLengthNBits[insertCode]);\r\n\t\t\t\t\t\tstate.copyLength = Org.Brotli.Dec.Prefix.CopyLengthOffset[copyCode] + Org.Brotli.Dec.BitReader.ReadBits(br, Org.Brotli.Dec.Prefix.CopyLengthNBits[copyCode]);\r\n\t\t\t\t\t\tstate.j = 0;\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.InsertLoop;\r\n\t\t\t\t\t\tgoto case Org.Brotli.Dec.RunningState.InsertLoop;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.InsertLoop:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\t// Fall through\r\n\t\t\t\t\t\tif (state.trivialLiteralContext)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\twhile (state.j < state.insertLength)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\t\t\t\t\tif (state.blockLength[0] == 0)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tDecodeLiteralBlockSwitch(state);\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t\tstate.blockLength[0]--;\r\n\t\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\t\t\t\t\tringBuffer[state.pos] = unchecked((byte)ReadSymbol(state.hGroup0.codes, state.literalTree, br));\r\n\t\t\t\t\t\t\t\tstate.j++;\r\n\t\t\t\t\t\t\t\tif (state.pos++ == ringBufferMask)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.InsertLoop;\r\n\t\t\t\t\t\t\t\t\tstate.bytesToWrite = state.ringBufferSize;\r\n\t\t\t\t\t\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tint prevByte1 = ringBuffer[(state.pos - 1) & ringBufferMask] & unchecked((int)(0xFF));\r\n\t\t\t\t\t\t\tint prevByte2 = ringBuffer[(state.pos - 2) & ringBufferMask] & unchecked((int)(0xFF));\r\n\t\t\t\t\t\t\twhile (state.j < state.insertLength)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\t\t\t\t\tif (state.blockLength[0] == 0)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tDecodeLiteralBlockSwitch(state);\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t\tint literalTreeIndex = state.contextMap[state.contextMapSlice + (Org.Brotli.Dec.Context.Lookup[state.contextLookupOffset1 + prevByte1] | Org.Brotli.Dec.Context.Lookup[state.contextLookupOffset2 + prevByte2])] & unchecked((int)(0xFF));\r\n\t\t\t\t\t\t\t\tstate.blockLength[0]--;\r\n\t\t\t\t\t\t\t\tprevByte2 = prevByte1;\r\n\t\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\t\t\t\t\tprevByte1 = ReadSymbol(state.hGroup0.codes, state.hGroup0.trees[literalTreeIndex], br);\r\n\t\t\t\t\t\t\t\tringBuffer[state.pos] = unchecked((byte)prevByte1);\r\n\t\t\t\t\t\t\t\tstate.j++;\r\n\t\t\t\t\t\t\t\tif (state.pos++ == ringBufferMask)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.InsertLoop;\r\n\t\t\t\t\t\t\t\t\tstate.bytesToWrite = state.ringBufferSize;\r\n\t\t\t\t\t\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.runningState != Org.Brotli.Dec.RunningState.InsertLoop)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tstate.metaBlockLength -= state.insertLength;\r\n\t\t\t\t\t\tif (state.metaBlockLength <= 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.distanceCode < 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\t\t\t\tif (state.blockLength[2] == 0)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tDecodeDistanceBlockSwitch(state);\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\tstate.blockLength[2]--;\r\n\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.FillBitWindow(br);\r\n\t\t\t\t\t\t\tstate.distanceCode = ReadSymbol(state.hGroup2.codes, state.hGroup2.trees[state.distContextMap[state.distContextMapSlice + (state.copyLength > 4 ? 3 : state.copyLength - 2)] & unchecked((int)(0xFF))], br);\r\n\t\t\t\t\t\t\tif (state.distanceCode >= state.numDirectDistanceCodes)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tstate.distanceCode -= state.numDirectDistanceCodes;\r\n\t\t\t\t\t\t\t\tint postfix = state.distanceCode & state.distancePostfixMask;\r\n\t\t\t\t\t\t\t\tstate.distanceCode = (int)(((uint)state.distanceCode) >> state.distancePostfixBits);\r\n\t\t\t\t\t\t\t\tint n = ((int)(((uint)state.distanceCode) >> 1)) + 1;\r\n\t\t\t\t\t\t\t\tint offset = ((2 + (state.distanceCode & 1)) << n) - 4;\r\n\t\t\t\t\t\t\t\tstate.distanceCode = state.numDirectDistanceCodes + postfix + ((offset + Org.Brotli.Dec.BitReader.ReadBits(br, n)) << state.distancePostfixBits);\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t// Convert the distance code to the actual distance by possibly looking up past distances\r\n\t\t\t\t\t\t// from the ringBuffer.\r\n\t\t\t\t\t\tstate.distance = TranslateShortCodes(state.distanceCode, state.distRb, state.distRbIdx);\r\n\t\t\t\t\t\tif (state.distance < 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Negative distance\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\t\tif (state.maxDistance != state.maxBackwardDistance && state.pos < state.maxBackwardDistance)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.maxDistance = state.pos;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.maxDistance = state.maxBackwardDistance;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tstate.copyDst = state.pos;\r\n\t\t\t\t\t\tif (state.distance > state.maxDistance)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Transform;\r\n\t\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.distanceCode > 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.distRb[state.distRbIdx & 3] = state.distance;\r\n\t\t\t\t\t\t\tstate.distRbIdx++;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.copyLength > state.metaBlockLength)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Invalid backward reference\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\t\tstate.j = 0;\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.CopyLoop;\r\n\t\t\t\t\t\tgoto case Org.Brotli.Dec.RunningState.CopyLoop;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.CopyLoop:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\t// fall through\r\n\t\t\t\t\t\tint src = (state.pos - state.distance) & ringBufferMask;\r\n\t\t\t\t\t\tint dst = state.pos;\r\n\t\t\t\t\t\tint copyLength = state.copyLength - state.j;\r\n\t\t\t\t\t\tif ((src + copyLength < ringBufferMask) && (dst + copyLength < ringBufferMask))\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tfor (int k = 0; k < copyLength; ++k)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tringBuffer[dst++] = ringBuffer[src++];\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\tstate.j += copyLength;\r\n\t\t\t\t\t\t\tstate.metaBlockLength -= copyLength;\r\n\t\t\t\t\t\t\tstate.pos += copyLength;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tfor (; state.j < state.copyLength; )\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tringBuffer[state.pos] = ringBuffer[(state.pos - state.distance) & ringBufferMask];\r\n\t\t\t\t\t\t\t\tstate.metaBlockLength--;\r\n\t\t\t\t\t\t\t\tstate.j++;\r\n\t\t\t\t\t\t\t\tif (state.pos++ == ringBufferMask)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.CopyLoop;\r\n\t\t\t\t\t\t\t\t\tstate.bytesToWrite = state.ringBufferSize;\r\n\t\t\t\t\t\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.runningState == Org.Brotli.Dec.RunningState.CopyLoop)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.Transform:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tif (state.copyLength >= Org.Brotli.Dec.Dictionary.MinWordLength && state.copyLength <= Org.Brotli.Dec.Dictionary.MaxWordLength)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tint offset = Org.Brotli.Dec.Dictionary.OffsetsByLength[state.copyLength];\r\n\t\t\t\t\t\t\tint wordId = state.distance - state.maxDistance - 1;\r\n\t\t\t\t\t\t\tint shift = Org.Brotli.Dec.Dictionary.SizeBitsByLength[state.copyLength];\r\n\t\t\t\t\t\t\tint mask = (1 << shift) - 1;\r\n\t\t\t\t\t\t\tint wordIdx = wordId & mask;\r\n\t\t\t\t\t\t\tint transformIdx = (int)(((uint)wordId) >> shift);\r\n\t\t\t\t\t\t\toffset += wordIdx * state.copyLength;\r\n\t\t\t\t\t\t\tif (transformIdx < Org.Brotli.Dec.Transform.Transforms.Length)\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tint len = Org.Brotli.Dec.Transform.TransformDictionaryWord(ringBuffer, state.copyDst, Org.Brotli.Dec.Dictionary.GetData(), offset, state.copyLength, Org.Brotli.Dec.Transform.Transforms[transformIdx]);\r\n\t\t\t\t\t\t\t\tstate.copyDst += len;\r\n\t\t\t\t\t\t\t\tstate.pos += len;\r\n\t\t\t\t\t\t\t\tstate.metaBlockLength -= len;\r\n\t\t\t\t\t\t\t\tif (state.copyDst >= state.ringBufferSize)\r\n\t\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\t\tstate.nextRunningState = Org.Brotli.Dec.RunningState.CopyWrapBuffer;\r\n\t\t\t\t\t\t\t\t\tstate.bytesToWrite = state.ringBufferSize;\r\n\t\t\t\t\t\t\t\t\tstate.bytesWritten = 0;\r\n\t\t\t\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.Write;\r\n\t\t\t\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\telse\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Invalid backward reference\");\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Invalid backward reference\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t// COV_NF_LINE\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.CopyWrapBuffer:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tSystem.Array.Copy(ringBuffer, state.ringBufferSize, ringBuffer, 0, state.copyDst - state.ringBufferSize);\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.MainLoop;\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.ReadMetadata:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\twhile (state.metaBlockLength > 0)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadMoreInput(br);\r\n\t\t\t\t\t\t\t// Optimize\r\n\t\t\t\t\t\t\tOrg.Brotli.Dec.BitReader.ReadBits(br, 8);\r\n\t\t\t\t\t\t\tstate.metaBlockLength--;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tstate.runningState = Org.Brotli.Dec.RunningState.BlockStart;\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.CopyUncompressed:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tCopyUncompressedData(state);\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tcase Org.Brotli.Dec.RunningState.Write:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tif (!WriteRingBuffer(state))\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t// Output buffer is full.\r\n\t\t\t\t\t\t\treturn;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tif (state.pos >= state.maxBackwardDistance)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\tstate.maxDistance = state.maxBackwardDistance;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\tstate.pos &= ringBufferMask;\r\n\t\t\t\t\t\tstate.runningState = state.nextRunningState;\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\r\n\t\t\t\t\tdefault:\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Unexpected state \" + state.runningState);\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tif (state.runningState == Org.Brotli.Dec.RunningState.Finished)\r\n\t\t\t{\r\n\t\t\t\tif (state.metaBlockLength < 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tthrow new Org.Brotli.Dec.BrotliRuntimeException(\"Invalid metablock length\");\r\n\t\t\t\t}\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.JumpToByteBoundary(br);\r\n\t\t\t\tOrg.Brotli.Dec.BitReader.CheckHealth(state.br, true);\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/DecodeTest.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// \r\n\t/// Tests for\r\n\t/// \r\n\t/// .\r\n\t/// \r\n\tpublic class DecodeTest\r\n\t{\r\n\t\t/// \r\n\t\tprivate byte[] Decompress(byte[] data, bool byByte)\r\n\t\t{\r\n\t\t\tbyte[] buffer = new byte[65536];\r\n\t\t\tSystem.IO.MemoryStream input = new System.IO.MemoryStream(data);\r\n\t\t\tSystem.IO.MemoryStream output = new System.IO.MemoryStream();\r\n\t\t\tOrg.Brotli.Dec.BrotliInputStream brotliInput = new Org.Brotli.Dec.BrotliInputStream(input);\r\n\t\t\tif (byByte)\r\n\t\t\t{\r\n\t\t\t\tbyte[] oneByte = new byte[1];\r\n\t\t\t\twhile (true)\r\n\t\t\t\t{\r\n\t\t\t\t\tint next = brotliInput.ReadByte();\r\n\t\t\t\t\tif (next == -1)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\t\t\t\t\toneByte[0] = unchecked((byte)next);\r\n\t\t\t\t\toutput.Write(oneByte, 0, 1);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\twhile (true)\r\n\t\t\t\t{\r\n\t\t\t\t\tint len = brotliInput.Read(buffer, 0, buffer.Length);\r\n\t\t\t\t\tif (len <= 0)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tbreak;\r\n\t\t\t\t\t}\r\n\t\t\t\t\toutput.Write(buffer, 0, len);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\tbrotliInput.Close();\r\n\t\t\treturn output.ToArray();\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\tprivate byte[] DecompressWithDictionary(byte[] data, byte[] dictionary)\r\n\t\t{\r\n\t\t\tbyte[] buffer = new byte[65536];\r\n\t\t\tSystem.IO.MemoryStream input = new System.IO.MemoryStream(data);\r\n\t\t\tSystem.IO.MemoryStream output = new System.IO.MemoryStream();\r\n\t\t\tOrg.Brotli.Dec.BrotliInputStream brotliInput = new Org.Brotli.Dec.BrotliInputStream(input, Org.Brotli.Dec.BrotliInputStream.DefaultInternalBufferSize, dictionary);\r\n\t\t\twhile (true)\r\n\t\t\t{\r\n\t\t\t\tint len = brotliInput.Read(buffer, 0, buffer.Length);\r\n\t\t\t\tif (len <= 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\t\t\t\toutput.Write(buffer, 0, len);\r\n\t\t\t}\r\n\t\t\tbrotliInput.Close();\r\n\t\t\treturn output.ToArray();\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\tprivate void CheckDecodeResourceWithDictionary(string expected, string compressed, string dictionary)\r\n\t\t{\r\n\t\t\tbyte[] expectedBytes = Org.Brotli.Dec.Transform.ReadUniBytes(expected);\r\n\t\t\tbyte[] compressedBytes = Org.Brotli.Dec.Transform.ReadUniBytes(compressed);\r\n\t\t\tbyte[] dictionaryBytes = Org.Brotli.Dec.Transform.ReadUniBytes(dictionary);\r\n\t\t\tbyte[] actual = DecompressWithDictionary(compressedBytes, dictionaryBytes);\r\n\t\t\tNUnit.Framework.Assert.AreEqual(expectedBytes, actual);\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\tprivate void CheckDecodeResource(string expected, string compressed)\r\n\t\t{\r\n\t\t\tbyte[] expectedBytes = Org.Brotli.Dec.Transform.ReadUniBytes(expected);\r\n\t\t\tbyte[] compressedBytes = Org.Brotli.Dec.Transform.ReadUniBytes(compressed);\r\n\t\t\tbyte[] actual = Decompress(compressedBytes, false);\r\n\t\t\tNUnit.Framework.Assert.AreEqual(expectedBytes, actual);\r\n\t\t\tbyte[] actualByByte = Decompress(compressedBytes, true);\r\n\t\t\tNUnit.Framework.Assert.AreEqual(expectedBytes, actualByByte);\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestEmpty()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(string.Empty, \"\\u0006\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestX()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"X\", \"\\u000B\\u0000\\u0080X\\u0003\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestX10Y10()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"XXXXXXXXXXYYYYYYYYYY\", \"\\u001B\\u0013\\u0000\\u0000\\u00A4\\u00B0\\u00B2\\u00EA\\u0081G\\u0002\\u008A\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestX64()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\", \"\\u001B\\u003F\\u0000\\u0000$\\u00B0\\u00E2\\u0099\\u0080\\u0012\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestUkkonooa()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"ukko nooa, ukko nooa oli kunnon mies, kun han meni saunaan, \" + \"pisti laukun naulaan, ukko nooa, ukko nooa oli kunnon mies.\", \"\\u001Bv\\u0000\\u0000\\u0014J\\u00AC\\u009Bz\\u00BD\\u00E1\\u0097\\u009D\\u007F\\u008E\\u00C2\\u0082\" + \"6\\u000E\\u009C\\u00E0\\u0090\\u0003\\u00F7\\u008B\\u009E8\\u00E6\\u00B6\\u0000\\u00AB\\u00C3\\u00CA\"\r\n\t\t\t\t + \"\\u00A0\\u00C2\\u00DAf6\\u00DC\\u00CD\\u0080\\u008D.!\\u00D7n\\u00E3\\u00EAL\\u00B8\\u00F0\\u00D2\" + \"\\u00B8\\u00C7\\u00C2pM:\\u00F0i~\\u00A1\\u00B8Es\\u00AB\\u00C4W\\u001E\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestMonkey()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"znxcvnmz,xvnm.,zxcnv.,xcn.z,vn.zvn.zxcvn.,zxcn.vn.v,znm.,vnzx.,vnzxc.vn.z,vnz.,nv.z,nvmz\" + \"xc,nvzxcvcnm.,vczxvnzxcnvmxc.zmcnvzm.,nvmc,nzxmc,vn.mnnmzxc,vnxcnmv,znvzxcnmv,.xcnvm,zxc\" + \"nzxv.zx,qweryweurqioweupropqwutioweupqrioweutiopweuriopweuriopqwurioputiopqwuriowuqeriou\"\r\n\t\t\t\t + \"pqweropuweropqwurweuqriopuropqwuriopuqwriopuqweopruioqweurqweuriouqweopruioupqiytioqtyio\" + \"wtyqptypryoqweutioioqtweqruowqeytiowquiourowetyoqwupiotweuqiorweuqroipituqwiorqwtioweuri\" + \"ouytuioerytuioweryuitoweytuiweyuityeruirtyuqriqweuropqweiruioqweurioqwuerioqwyuituierwot\"\r\n\t\t\t\t + \"ueryuiotweyrtuiwertyioweryrueioqptyioruyiopqwtjkasdfhlafhlasdhfjklashjkfhasjklfhklasjdfh\" + \"klasdhfjkalsdhfklasdhjkflahsjdkfhklasfhjkasdfhasfjkasdhfklsdhalghhaf;hdklasfhjklashjklfa\" + \"sdhfasdjklfhsdjklafsd;hkldadfjjklasdhfjasddfjklfhakjklasdjfkl;asdjfasfljasdfhjklasdfhjka\"\r\n\t\t\t\t + \"ghjkashf;djfklasdjfkljasdklfjklasdjfkljasdfkljaklfj\", \"\\u001BJ\\u0003\\u0000\\u008C\\u0094n\\u00DE\\u00B4\\u00D7\\u0096\\u00B1x\\u0086\\u00F2-\\u00E1\\u001A\" + \"\\u00BC\\u000B\\u001C\\u00BA\\u00A9\\u00C7\\u00F7\\u00CCn\\u00B2B4QD\\u008BN\\u0013\\b\\u00A0\\u00CDn\"\r\n\t\t\t\t + \"\\u00E8,\\u00A5S\\u00A1\\u009C],\\u001D#\\u001A\\u00D2V\\u00BE\\u00DB\\u00EB&\\u00BA\\u0003e|\\u0096j\" + \"\\u00A2v\\u00EC\\u00EF\\u0087G3\\u00D6\\'\\u000Ec\\u0095\\u00E2\\u001D\\u008D,\\u00C5\\u00D1(\\u009F`\" + \"\\u0094o\\u0002\\u008B\\u00DD\\u00AAd\\u0094,\\u001E;e|\\u0007EZ\\u00B2\\u00E2\\u00FCI\\u0081,\\u009F\"\r\n\t\t\t\t + \"@\\u00AE\\u00EFh\\u0081\\u00AC\\u0016z\\u000F\\u00F5;m\\u001C\\u00B9\\u001E-_\\u00D5\\u00C8\\u00AF^\" + \"\\u0085\\u00AA\\u0005\\u00BESu\\u00C2\\u00B0\\\"\\u008A\\u0015\\u00C6\\u00A3\\u00B1\\u00E6B\\u0014\" + \"\\u00F4\\u0084TS\\u0019_\\u00BE\\u00C3\\u00F2\\u001D\\u00D1\\u00B7\\u00E5\\u00DD\\u00B6\\u00D9#\\u00C6\"\r\n\t\t\t\t + \"\\u00F6\\u009F\\u009E\\u00F6Me0\\u00FB\\u00C0qE\\u0004\\u00AD\\u0003\\u00B5\\u00BE\\u00C9\\u00CB\" + \"\\u00FD\\u00E2PZFt\\u0004\\r\\u00FF \\u0004w\\u00B2m\\'\\u00BFG\\u00A9\\u009D\\u001B\\u0096,b\\u0090#\" + \"\\u008B\\u00E0\\u00F8\\u001D\\u00CF\\u00AF\\u001D=\\u00EE\\u008A\\u00C8u#f\\u00DD\\u00DE\\u00D6m\"\r\n\t\t\t\t + \"\\u00E3*\\u0082\\u008Ax\\u008A\\u00DB\\u00E6 L\\u00B7\\\\c\\u00BA0\\u00E3?\\u00B6\\u00EE\\u008C\\\"\" + \"\\u00A2*\\u00B0\\\"\\n\\u0099\\u00FF=bQ\\u00EE\\b\\u00F6=J\\u00E4\\u00CC\\u00EF\\\"\\u0087\\u0011\\u00E2\" + \"\\u0083(\\u00E4\\u00F5\\u008F5\\u0019c[\\u00E1Z\\u0092s\\u00DD\\u00A1P\\u009D8\\\\\\u00EB\\u00B5\\u0003\"\r\n\t\t\t\t + \"jd\\u0090\\u0094\\u00C8\\u008D\\u00FB/\\u008A\\u0086\\\"\\u00CC\\u001D\\u0087\\u00E0H\\n\\u0096w\\u00909\" + \"\\u00C6##H\\u00FB\\u0011GV\\u00CA \\u00E3B\\u0081\\u00F7w2\\u00C1\\u00A5\\\\@!e\\u0017@)\\u0017\\u0017\" + \"lV2\\u00988\\u0006\\u00DC\\u0099M3)\\u00BB\\u0002\\u00DFL&\\u0093l\\u0017\\u0082\\u0086 \\u00D7\"\r\n\t\t\t\t + \"\\u0003y}\\u009A\\u0000\\u00D7\\u0087\\u0000\\u00E7\\u000Bf\\u00E3Lfqg\\b2\\u00F9\\b>\\u00813\\u00CD\" + \"\\u0017r1\\u00F0\\u00B8\\u0094RK\\u00901\\u008Eh\\u00C1\\u00EF\\u0090\\u00C9\\u00E5\\u00F2a\\tr%\" + \"\\u00AD\\u00EC\\u00C5b\\u00C0\\u000B\\u0012\\u0005\\u00F7\\u0091u\\r\\u00EEa..\\u0019\\t\\u00C2\\u0003\"\r\n\t\t\t\t);\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestFox()\r\n\t\t{\r\n\t\t\tCheckDecodeResource(\"The quick brown fox jumps over the lazy dog\", \"\\u001B*\\u0000\\u0000\\u0004\\u0004\\u00BAF:\\u0085\\u0003\\u00E9\\u00FA\\f\\u0091\\u0002H\\u0011,\" + \"\\u00F3\\u008A:\\u00A3V\\u007F\\u001A\\u00AE\\u00BF\\u00A4\\u00AB\\u008EM\\u00BF\\u00ED\\u00E2\\u0004K\"\r\n\t\t\t\t + \"\\u0091\\u00FF\\u0087\\u00E9\\u001E\");\r\n\t\t}\r\n\r\n\t\t/// \r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestFoxFox()\r\n\t\t{\r\n\t\t\tCheckDecodeResourceWithDictionary(\"The quick brown fox jumps over the lazy dog\", \"\\u001B*\\u0000\\u0000 \\u0000\\u00C2\\u0098\\u00B0\\u00CA\\u0001\", \"The quick brown fox jumps over the lazy dog\");\r\n\t\t}\r\n\r\n\t\t[NUnit.Framework.Test]\r\n\t\tpublic virtual void TestUtils()\r\n\t\t{\r\n\t\t\tnew Org.Brotli.Dec.Context();\r\n\t\t\tnew Org.Brotli.Dec.Decode();\r\n\t\t\tnew Org.Brotli.Dec.Dictionary();\r\n\t\t\tnew Org.Brotli.Dec.Huffman();\r\n\t\t\tnew Org.Brotli.Dec.Prefix();\r\n\t\t}\r\n\t}\r\n}\r\n" }, { "path": "csharp/org/brotli/dec/Dictionary.cs", "content": "/* Copyright 2015 Google Inc. All Rights Reserved.\r\n\r\nDistributed under MIT license.\r\nSee file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r\n*/\r\nnamespace Org.Brotli.Dec\r\n{\r\n\t/// Collection of static dictionary words.\r\n\t/// \r\n\t/// Collection of static dictionary words.\r\n\t///

Dictionary content is loaded from binary resource when\r\n\t/// \r\n\t/// is executed for the\r\n\t/// first time. Consequently, it saves memory and CPU in case dictionary is not required.\r\n\t///

One possible drawback is that multiple threads that need dictionary data may be blocked (only\r\n\t/// once in each classworld). To avoid this, it is enough to call\r\n\t/// \r\n\t/// proactively.\r\n\t/// \r\n\tinternal sealed class Dictionary\r\n\t{\r\n\t\t///

\"Initialization-on-demand holder idiom\" implementation.\r\n\t\t/// \r\n\t\t/// \"Initialization-on-demand holder idiom\" implementation.\r\n\t\t///

This static class definition is not initialized until the JVM determines that it must be\r\n\t\t/// executed (when the static method\r\n\t\t/// \r\n\t\t/// is invoked).\r\n\t\t/// \r\n\t\tprivate class DataHolder0\r\n\t\t{\r\n\t\t\tinternal static string GetData()\r\n\t\t\t{\r\n\t\t\t\treturn \"timedownlifeleftbackcodedatashowonlysitecityopenjustlikefreeworktextyearoverbodyloveformbookplaylivelinehelphomesidemorewordlongthemviewfindpagedaysfullheadtermeachareafromtruemarkableuponhighdatelandnewsevennextcasebothpostusedmadehandherewhatnameLinkblogsizebaseheldmakemainuser') +holdendswithNewsreadweresigntakehavegameseencallpathwellplusmenufilmpartjointhislistgoodneedwayswestjobsmindalsologorichuseslastteamarmyfoodkingwilleastwardbestfirePageknowaway.pngmovethanloadgiveselfnotemuchfeedmanyrockicononcelookhidediedHomerulehostajaxinfoclublawslesshalfsomesuchzone100%onescareTimeracebluefourweekfacehopegavehardlostwhenparkkeptpassshiproomHTMLplanTypedonesavekeepflaglinksoldfivetookratetownjumpthusdarkcardfilefearstaykillthatfallautoever.comtalkshopvotedeepmoderestturnbornbandfellroseurl(skinrolecomeactsagesmeetgold.jpgitemvaryfeltthensenddropViewcopy1.0\\\"stopelseliestourpack.gifpastcss?graymean>rideshotlatesaidroadvar feeljohnrickportfast'UA-deadpoorbilltypeU.S.woodmust2px;Inforankwidewantwalllead[0];paulwavesure$('#waitmassarmsgoesgainlangpaid!-- lockunitrootwalkfirmwifexml\\\"songtest20pxkindrowstoolfontmailsafestarmapscorerainflowbabyspansays4px;6px;artsfootrealwikiheatsteptriporg/lakeweaktoldFormcastfansbankveryrunsjulytask1px;goalgrewslowedgeid=\\\"sets5px;.js?40pxif (soonseatnonetubezerosentreedfactintogiftharm18pxcamehillboldzoomvoideasyringfillpeakinitcost3px;jacktagsbitsrolleditknewnearironfreddiskwentsoilputs/js/holyT22:ISBNT20:adamsees

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