Full Code of Venom1991/refind-btrfs for AI

Repository: Venom1991/refind-btrfs
Branch: master
Commit: 9c567b94ab8e
Files: 95
Total size: 525.9 KB

Directory structure:
gitextract_hh9l_b0o/

├── .gitignore
├── .pylintrc
├── .vscode/
│   ├── launch.json
│   └── settings.json
├── LICENSE.txt
├── MANIFEST.in
├── README.md
├── pyproject.toml
├── requirements.txt
├── setup.cfg
├── setup.py
├── src/
│   └── refind_btrfs/
│       ├── __init__.py
│       ├── __main__.py
│       ├── boot/
│       │   ├── __init__.py
│       │   ├── antlr4/
│       │   │   ├── RefindConfigLexer.g4
│       │   │   ├── RefindConfigLexer.interp
│       │   │   ├── RefindConfigLexer.py
│       │   │   ├── RefindConfigLexer.tokens
│       │   │   ├── RefindConfigParser.g4
│       │   │   ├── RefindConfigParser.interp
│       │   │   ├── RefindConfigParser.py
│       │   │   ├── RefindConfigParser.tokens
│       │   │   ├── RefindConfigParserVisitor.py
│       │   │   └── __init__.py
│       │   ├── boot_options.py
│       │   ├── boot_stanza.py
│       │   ├── file_refind_config_provider.py
│       │   ├── migrations/
│       │   │   ├── __init__.py
│       │   │   ├── icon_migration_strategies.py
│       │   │   ├── main_migration_strategies.py
│       │   │   ├── migration.py
│       │   │   └── state.py
│       │   ├── refind_config.py
│       │   ├── refind_listeners.py
│       │   ├── refind_visitors.py
│       │   └── sub_menu.py
│       ├── common/
│       │   ├── __init__.py
│       │   ├── abc/
│       │   │   ├── __init__.py
│       │   │   ├── base_config.py
│       │   │   ├── base_runner.py
│       │   │   ├── commands/
│       │   │   │   ├── __init__.py
│       │   │   │   ├── device_command.py
│       │   │   │   ├── icon_command.py
│       │   │   │   └── subvolume_command.py
│       │   │   ├── factories/
│       │   │   │   ├── __init__.py
│       │   │   │   ├── base_device_command_factory.py
│       │   │   │   ├── base_icon_command_factory.py
│       │   │   │   ├── base_logger_factory.py
│       │   │   │   └── base_subvolume_command_factory.py
│       │   │   └── providers/
│       │   │       ├── __init__.py
│       │   │       ├── base_package_config_provider.py
│       │   │       ├── base_persistence_provider.py
│       │   │       └── base_refind_config_provider.py
│       │   ├── boot_files_check_result.py
│       │   ├── checkable_observer.py
│       │   ├── configurable_mixin.py
│       │   ├── constants.py
│       │   ├── enums.py
│       │   ├── exceptions.py
│       │   └── package_config.py
│       ├── console/
│       │   ├── __init__.py
│       │   └── cli_runner.py
│       ├── data/
│       │   ├── refind-btrfs
│       │   ├── refind-btrfs.conf-sample
│       │   └── refind-btrfs.service
│       ├── device/
│       │   ├── __init__.py
│       │   ├── block_device.py
│       │   ├── filesystem.py
│       │   ├── mount_options.py
│       │   ├── partition.py
│       │   ├── partition_table.py
│       │   └── subvolume.py
│       ├── service/
│       │   ├── __init__.py
│       │   ├── snapshot_event_handler.py
│       │   ├── snapshot_observer.py
│       │   └── watchdog_runner.py
│       ├── state_management/
│       │   ├── __init__.py
│       │   ├── conditions.py
│       │   ├── model.py
│       │   └── refind_btrfs_machine.py
│       ├── system/
│       │   ├── __init__.py
│       │   ├── btrfsutil_command.py
│       │   ├── command_factories.py
│       │   ├── findmnt_command.py
│       │   ├── fstab_command.py
│       │   ├── lsblk_command.py
│       │   └── pillow_command.py
│       └── utility/
│           ├── __init__.py
│           ├── file_package_config_provider.py
│           ├── helpers.py
│           ├── injector_modules.py
│           ├── level_aware_formatter.py
│           ├── logger_factories.py
│           └── shelve_persistence_provider.py
└── tests/
    └── .keep

================================================
FILE CONTENTS
================================================

================================================
FILE: .gitignore
================================================
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
#  Usually these files are written by a python script from a template
#  before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
*.py,cover
.hypothesis/
.pytest_cache/
cover/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3
db.sqlite3-journal

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
.pybuilder/
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
#   For a library or package, you might want to ignore these files since the code is
#   intended to run in multiple environments; otherwise, check them in:
# .python-version

# pipenv
#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
#   However, in case of collaboration, if having platform-specific dependencies or dependencies
#   having no cross-platform support, pipenv may install dependencies that don't work, or not
#   install all needed dependencies.
#Pipfile.lock

# PEP 582; used by e.g. github.com/David-OConnor/pyflow
__pypackages__/

# Celery stuff
celerybeat-schedule
celerybeat.pid

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/

# pytype static type analyzer
.pytype/

# Cython debug symbols
cython_debug/

# VS Code #
.vscode/*
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/settings.json
*.code-workspace

# VS Code Patch #
# Ignore all local history of files
.history
.ionide


================================================
FILE: .pylintrc
================================================
[MASTER]

# A comma-separated list of package or module names from where C extensions may
# be loaded. Extensions are loading into the active Python interpreter and may
# run arbitrary code.
extension-pkg-whitelist=btrfsutil

# Specify a score threshold to be exceeded before program exits with error.
fail-under=10.0

# Add files or directories to the blacklist. They should be base names, not
# paths.
ignore=CVS

# Add files or directories matching the regex patterns to the blacklist. The
# regex matches against base names, not paths.
ignore-patterns=

# Python code to execute, usually for sys.path manipulation such as
# pygtk.require().
init-hook='import sys, os; sys.path.append(os.path.join(os.getcwd(), "src", "refind_btrfs"))'

# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
# number of processors available to use.
jobs=1

# Control the amount of potential inferred values when inferring a single
# object. This can help the performance when dealing with large functions or
# complex, nested conditions.
limit-inference-results=100

# List of plugins (as comma separated values of python module names) to load,
# usually to register additional checkers.
load-plugins=

# Pickle collected data for later comparisons.
persistent=yes

# When enabled, pylint would attempt to guess common misconfiguration and emit
# user-friendly hints instead of false-positive error messages.
suggestion-mode=yes

# Allow loading of arbitrary C extensions. Extensions are imported into the
# active Python interpreter and may run arbitrary code.
unsafe-load-any-extension=no


[MESSAGES CONTROL]

# Only show warnings with the listed confidence levels. Leave empty to show
# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED.
confidence=

# Disable the message, report, category or checker with the given id(s). You
# can either give multiple identifiers separated by comma (,) or put this
# option multiple times (only on the command line, not in the configuration
# file where it should appear only once). You can also use "--disable=all" to
# disable everything first and then reenable specific checks. For example, if
# you want to run only the similarities checker, you can use "--disable=all
# --enable=similarities". If you want to run only the classes checker, but have
# no Warning level messages displayed, use "--disable=all --enable=classes
# --disable=W".
disable=missing-module-docstring,
        missing-class-docstring,
        missing-function-docstring,
        unsubscriptable-object,
        inherit-non-class,
        too-few-public-methods,
        broad-except,
        print-statement,
        parameter-unpacking,
        unpacking-in-except,
        old-raise-syntax,
        backtick,
        long-suffix,
        old-ne-operator,
        old-octal-literal,
        import-star-module-level,
        non-ascii-bytes-literal,
        raw-checker-failed,
        bad-inline-option,
        locally-disabled,
        file-ignored,
        suppressed-message,
        useless-suppression,
        deprecated-pragma,
        use-symbolic-message-instead,
        apply-builtin,
        basestring-builtin,
        buffer-builtin,
        cmp-builtin,
        coerce-builtin,
        execfile-builtin,
        file-builtin,
        long-builtin,
        raw_input-builtin,
        reduce-builtin,
        standarderror-builtin,
        unicode-builtin,
        xrange-builtin,
        coerce-method,
        delslice-method,
        getslice-method,
        setslice-method,
        no-absolute-import,
        old-division,
        dict-iter-method,
        dict-view-method,
        next-method-called,
        metaclass-assignment,
        indexing-exception,
        raising-string,
        reload-builtin,
        oct-method,
        hex-method,
        nonzero-method,
        cmp-method,
        input-builtin,
        round-builtin,
        intern-builtin,
        unichr-builtin,
        map-builtin-not-iterating,
        zip-builtin-not-iterating,
        range-builtin-not-iterating,
        filter-builtin-not-iterating,
        using-cmp-argument,
        eq-without-hash,
        div-method,
        idiv-method,
        rdiv-method,
        exception-message-attribute,
        invalid-str-codec,
        sys-max-int,
        bad-python3-import,
        deprecated-string-function,
        deprecated-str-translate-call,
        deprecated-itertools-function,
        deprecated-types-field,
        next-method-defined,
        dict-items-not-iterating,
        dict-keys-not-iterating,
        dict-values-not-iterating,
        deprecated-operator-function,
        deprecated-urllib-function,
        xreadlines-attribute,
        deprecated-sys-function,
        exception-escape,
        comprehension-escape

# Enable the message, report, category or checker with the given id(s). You can
# either give multiple identifier separated by comma (,) or put this option
# multiple time (only on the command line, not in the configuration file where
# it should appear only once). See also the "--disable" option for examples.
enable=c-extension-no-member,
       unused-import,
       unused-wildcard-import


[REPORTS]

# Python expression which should return a score less than or equal to 10. You
# have access to the variables 'error', 'warning', 'refactor', and 'convention'
# which contain the number of messages in each category, as well as 'statement'
# which is the total number of statements analyzed. This score is used by the
# global evaluation report (RP0004).
evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)

# Template used to display messages. This is a python new-style format string
# used to format the message information. See doc for all details.
#msg-template=

# Set the output format. Available formats are text, parseable, colorized, json
# and msvs (visual studio). You can also give a reporter class, e.g.
# mypackage.mymodule.MyReporterClass.
output-format=text

# Tells whether to display a full report or only the messages.
reports=no

# Activate the evaluation score.
score=yes


[REFACTORING]

# Maximum number of nested blocks for function / method body
max-nested-blocks=5

# Complete name of functions that never returns. When checking for
# inconsistent-return-statements if a never returning function is called then
# it will be considered as an explicit return statement and no message will be
# printed.
never-returning-functions=sys.exit


[BASIC]

# Naming style matching correct argument names.
argument-naming-style=snake_case

# Regular expression matching correct argument names. Overrides argument-
# naming-style.
#argument-rgx=

# Naming style matching correct attribute names.
attr-naming-style=snake_case

# Regular expression matching correct attribute names. Overrides attr-naming-
# style.
#attr-rgx=

# Bad variable names which should always be refused, separated by a comma.
bad-names=foo,
          bar,
          baz,
          toto,
          tutu,
          tata

# Bad variable names regexes, separated by a comma. If names match any regex,
# they will always be refused
bad-names-rgxs=

# Naming style matching correct class attribute names.
class-attribute-naming-style=any

# Regular expression matching correct class attribute names. Overrides class-
# attribute-naming-style.
#class-attribute-rgx=

# Naming style matching correct class names.
class-naming-style=PascalCase

# Regular expression matching correct class names. Overrides class-naming-
# style.
#class-rgx=

# Naming style matching correct constant names.
const-naming-style=UPPER_CASE

# Regular expression matching correct constant names. Overrides const-naming-
# style.
#const-rgx=

# Minimum line length for functions/classes that require docstrings, shorter
# ones are exempt.
docstring-min-length=-1

# Naming style matching correct function names.
function-naming-style=snake_case

# Regular expression matching correct function names. Overrides function-
# naming-style.
#function-rgx=

# Good variable names which should always be accepted, separated by a comma.
good-names=e,
           i,
           j,
           k,
           ex,
           Run,
           _

# Good variable names regexes, separated by a comma. If names match any regex,
# they will always be accepted
good-names-rgxs=

# Include a hint for the correct naming format with invalid-name.
include-naming-hint=no

# Naming style matching correct inline iteration names.
inlinevar-naming-style=any

# Regular expression matching correct inline iteration names. Overrides
# inlinevar-naming-style.
#inlinevar-rgx=

# Naming style matching correct method names.
method-naming-style=snake_case

# Regular expression matching correct method names. Overrides method-naming-
# style.
#method-rgx=

# Naming style matching correct module names.
module-naming-style=snake_case

# Regular expression matching correct module names. Overrides module-naming-
# style.
#module-rgx=

# Colon-delimited sets of names that determine each other's naming style when
# the name regexes allow several styles.
name-group=

# Regular expression which should only match function or class names that do
# not require a docstring.
no-docstring-rgx=^_

# List of decorators that produce properties, such as abc.abstractproperty. Add
# to this list to register other decorators that produce valid properties.
# These decorators are taken in consideration only for invalid-name.
property-classes=abc.abstractproperty

# Naming style matching correct variable names.
variable-naming-style=snake_case

# Regular expression matching correct variable names. Overrides variable-
# naming-style.
#variable-rgx=


[FORMAT]

# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
expected-line-ending-format=

# Regexp for a line that is allowed to be longer than the limit.
ignore-long-lines=^\s*(# )?<?https?://\S+>?$

# Number of spaces of indent required inside a hanging or continued line.
indent-after-paren=4

# String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
# tab).
indent-string='    '

# Maximum number of characters on a single line.
max-line-length=100

# Maximum number of lines in a module.
max-module-lines=1000

# Allow the body of a class to be on the same line as the declaration if body
# contains single statement.
single-line-class-stmt=no

# Allow the body of an if to be on the same line as the test if there is no
# else.
single-line-if-stmt=no


[LOGGING]

# The type of string formatting that logging methods do. `old` means using %
# formatting, `new` is for `{}` formatting.
logging-format-style=old

# Logging modules to check that the string format arguments are in logging
# function parameter format.
logging-modules=logging


[MISCELLANEOUS]

# List of note tags to take in consideration, separated by a comma.
notes=FIXME,
      XXX,
      TODO

# Regular expression of note tags to take in consideration.
#notes-rgx=


[SIMILARITIES]

# Ignore comments when computing similarities.
ignore-comments=yes

# Ignore docstrings when computing similarities.
ignore-docstrings=yes

# Ignore imports when computing similarities.
ignore-imports=no

# Minimum lines number of a similarity.
min-similarity-lines=4


[SPELLING]

# Limits count of emitted suggestions for spelling mistakes.
max-spelling-suggestions=4

# Spelling dictionary name. Available dictionaries: none. To make it work,
# install the python-enchant package.
spelling-dict=

# List of comma separated words that should not be checked.
spelling-ignore-words=

# A path to a file that contains the private dictionary; one word per line.
spelling-private-dict-file=

# Tells whether to store unknown words to the private dictionary (see the
# --spelling-private-dict-file option) instead of raising a message.
spelling-store-unknown-words=no


[STRING]

# This flag controls whether inconsistent-quotes generates a warning when the
# character used as a quote delimiter is used inconsistently within a module.
check-quote-consistency=no

# This flag controls whether the implicit-str-concat should generate a warning
# on implicit string concatenation in sequences defined over several lines.
check-str-concat-over-line-jumps=no


[TYPECHECK]

# List of decorators that produce context managers, such as
# contextlib.contextmanager. Add to this list to register other decorators that
# produce valid context managers.
contextmanager-decorators=contextlib.contextmanager

# List of members which are set dynamically and missed by pylint inference
# system, and so shouldn't trigger E1101 when accessed. Python regular
# expressions are accepted.
generated-members=

# Tells whether missing members accessed in mixin class should be ignored. A
# mixin class is detected if its name ends with "mixin" (case insensitive).
ignore-mixin-members=yes

# Tells whether to warn about missing members when the owner of the attribute
# is inferred to be None.
ignore-none=yes

# This flag controls whether pylint should warn about no-member and similar
# checks whenever an opaque object is returned when inferring. The inference
# can return multiple potential results while evaluating a Python object, but
# some branches might not be evaluated, which results in partial inference. In
# that case, it might be useful to still emit no-member and other checks for
# the rest of the inferred objects.
ignore-on-opaque-inference=yes

# List of class names for which member attributes should not be checked (useful
# for classes with dynamically set attributes). This supports the use of
# qualified names.
ignored-classes=optparse.Values,thread._local,_thread._local

# List of module names for which member attributes should not be checked
# (useful for modules/projects where namespaces are manipulated during runtime
# and thus existing member attributes cannot be deduced by static analysis). It
# supports qualified module names, as well as Unix pattern matching.
ignored-modules=

# Show a hint with possible names when a member name was not found. The aspect
# of finding the hint is based on edit distance.
missing-member-hint=yes

# The minimum edit distance a name should have in order to be considered a
# similar match for a missing member name.
missing-member-hint-distance=1

# The total number of similar names that should be taken in consideration when
# showing a hint for a missing member.
missing-member-max-choices=1

# List of decorators that change the signature of a decorated function.
signature-mutators=


[VARIABLES]

# List of additional names supposed to be defined in builtins. Remember that
# you should avoid defining new builtins when possible.
additional-builtins=

# Tells whether unused global variables should be treated as a violation.
allow-global-unused-variables=yes

# List of strings which can identify a callback function by name. A callback
# name must start or end with one of those strings.
callbacks=cb_,
          _cb

# A regular expression matching the name of dummy variables (i.e. expected to
# not be used).
dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_

# Argument names that match this expression will be ignored. Default to name
# with leading underscore.
ignored-argument-names=_.*|^ignored_|^unused_

# Tells whether we should check for unused import in __init__ files.
init-import=no

# List of qualified module names which can have objects that can redefine
# builtins.
redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io


[CLASSES]

# List of method names used to declare (i.e. assign) instance attributes.
defining-attr-methods=__init__,
                      __new__,
                      setUp,
                      __post_init__

# List of member names, which should be excluded from the protected access
# warning.
exclude-protected=_asdict,
                  _fields,
                  _replace,
                  _source,
                  _make

# List of valid names for the first argument in a class method.
valid-classmethod-first-arg=cls

# List of valid names for the first argument in a metaclass class method.
valid-metaclass-classmethod-first-arg=cls


[DESIGN]

# Maximum number of arguments for function / method.
max-args=5

# Maximum number of attributes for a class (see R0902).
max-attributes=7

# Maximum number of boolean expressions in an if statement (see R0916).
max-bool-expr=5

# Maximum number of branch for function / method body.
max-branches=12

# Maximum number of locals for function / method body.
max-locals=15

# Maximum number of parents for a class (see R0901).
max-parents=7

# Maximum number of public methods for a class (see R0904).
max-public-methods=20

# Maximum number of return / yield for function / method body.
max-returns=6

# Maximum number of statements in function / method body.
max-statements=50

# Minimum number of public methods for a class (see R0903).
min-public-methods=2


[IMPORTS]

# List of modules that can be imported at any level, not just the top level
# one.
allow-any-import-level=

# Allow wildcard imports from modules that define __all__.
allow-wildcard-with-all=no

# Analyse import fallback blocks. This can be used to support both Python 2 and
# 3 compatible code, which means that the block might have code that exists
# only in one or another interpreter, leading to false positives when analysed.
analyse-fallback-blocks=no

# Deprecated modules which should not be used, separated by a comma.
deprecated-modules=optparse,tkinter.tix

# Create a graph of external dependencies in the given file (report RP0402 must
# not be disabled).
ext-import-graph=

# Create a graph of every (i.e. internal and external) dependencies in the
# given file (report RP0402 must not be disabled).
import-graph=

# Create a graph of internal dependencies in the given file (report RP0402 must
# not be disabled).
int-import-graph=

# Force import order to recognize a module as part of the standard
# compatibility libraries.
known-standard-library=

# Force import order to recognize a module as part of a third party library.
known-third-party=enchant

# Couples of modules and preferred modules, separated by a comma.
preferred-modules=


[EXCEPTIONS]

# Exceptions that will emit a warning when being caught. Defaults to
# "BaseException, Exception".
overgeneral-exceptions=BaseException,
                       Exception


================================================
FILE: .vscode/launch.json
================================================
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    "version": "0.2.0",
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            "name": "Python: Module",
            "type": "debugpy",
            "request": "launch",
            "console": "integratedTerminal",
            "module": "refind_btrfs",
            "cwd": "${workspaceFolder}/src",
            "envFile": "${workspaceFolder}/.env",
            "args": [
                "--run-mode",
                "one-time"
            ],
            "sudo": true,
            "justMyCode": false
        }
    ]
}

================================================
FILE: .vscode/settings.json
================================================
{
    "antlr4.generation": {
        "alternativeJar": "C:\\Users\\Luka\\Projects\\Python\\antlr-4.13.1-complete.jar",
        "language": "Python3",
        "listeners": false,
        "mode": "external",
        "visitors": true
    },
    "cSpell.words": [
        "antlr",
        "bootable",
        "Bootnum",
        "Btrfs",
        "btrfsutil",
        "bytecode",
        "ELILO",
        "EPERM",
        "errno",
        "findmnt",
        "fstype",
        "getpid",
        "getuid",
        "groupby",
        "ICNS",
        "IMODE",
        "INITRD",
        "inplace",
        "ismethod",
        "itertools",
        "journalctl",
        "levelno",
        "Lsblk",
        "menuentry",
        "mtab",
        "nargs",
        "nodeps",
        "nofsroot",
        "ostype",
        "otime",
        "partuuid",
        "pidfile",
        "pidname",
        "PTABLE",
        "pttype",
        "ptuuid",
        "pycache",
        "pylint",
        "pyproject",
        "PYTHONPATH",
        "refind",
        "rootflags",
        "setuptools",
        "SPDX",
        "submenuentry",
        "Subobject",
        "suboption",
        "subvol",
        "subvolid",
        "subvolume",
        "tomlkit",
        "vfat"
    ],
    "code-runner.clearPreviousOutput": true,
    "code-runner.runInTerminal": true,
    "python.analysis.completeFunctionParens": true,
    "python.analysis.diagnosticMode": "workspace",
    "python.analysis.extraPaths": [
        "src/refind_btrfs"
    ],
    "python.defaultInterpreterPath": "${workspaceFolder}/.venv/bin/python",
    "python.envFile": "${workspaceFolder}/.env",
    "python.formatting.provider": "black",
    "python.languageServer": "Pylance",
    "python.linting.enabled": true,
    "python.linting.mypyEnabled": true,
    "python.linting.mypyPath": "${workspaceFolder}/.venv/bin/mypy",
    "python.linting.pylintEnabled": true,
    "python.linting.pylintPath": "${workspaceFolder}/.venv/bin/pylint",
    "search.exclude": {
        "**/.venv": true
    },
    "terminal.integrated.env.linux": {
        "PYTHONPATH": "${env:PYTHONPATH}:${workspaceFolder}/src"
    }
}

================================================
FILE: LICENSE.txt
================================================
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The GNU General Public License is a free, copyleft license for
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                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
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Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
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    <program>  Copyright (C) <year>  <name of author>
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The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
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  You should also get your employer (if you work as a programmer) or school,
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For more information on this, and how to apply and follow the GNU GPL, see
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  The GNU General Public License does not permit incorporating your program
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================================================
FILE: MANIFEST.in
================================================
include pyproject.toml
include *.md
include LICENSE.txt

# Include ANTLR generated files
recursive-include src/refind_btrfs/boot/antlr4 *.py

# Include data files
recursive-include src/refind_btrfs/data *

# Exclude all bytecode
global-exclude *.py[cdo]


================================================
FILE: README.md
================================================
# refind-btrfs

### Table of Contents
  - [Description](#description)
  - [Prerequisites](#prerequisites)
  - [Installation](#installation)
  - [Configuration](#configuration)
  - [Example](#example)
  - [Implementation](#implementation)
  - [Further Efforts](#further-efforts)

## Description
This tool is used to automate a few tedious tasks required to boot into [Btrfs](https://en.wikipedia.org/wiki/Btrfs) snapshots from [rEFInd](https://en.wikipedia.org/wiki/REFInd). It is to rEFInd what [grub-btrfs](https://github.com/Antynea/grub-btrfs) is to [GRUB](https://en.wikipedia.org/wiki/GNU_GRUB).

What it does is the following:
* Gathers information about block devices present in the system
* Identifies the [ESP](https://en.wikipedia.org/wiki/EFI_system_partition) (either by GPT GUID or MBR ID)
* Gathers information about mounted filesystems (from [mtab](https://en.wikipedia.org/wiki/Mtab)) which are present on all of the found block devices
* Identifies the root mount point and gathers information about the subvolume which is mounted at said mount point
* Searches for snapshots of the identified subvolume in the configured directory (or directories)
* Searches for rEFInd's main config file on the ESP and parses it to extract [manual boot stanzas](https://www.rodsbooks.com/refind/configfile.html#stanzas) from it (included configs are also analyzed, if present)
* Selects the configured number of latest snapshots and uses them as such if they are writable and if any aren't, it either (depending on the configuration):
  * sets their read-only flag to false, thus making them writable
  * creates new writable snapshots from them in the configured location
* Aligns the root mount point in the [fstab](https://en.wikipedia.org/wiki/Fstab) file of each selected snapshot with the snapshot itself
* Deletes outdated previously created writable snapshots (if any exist)
* Generates new manual boot stanzas from identified ones where every relevant field is aligned with each selected snapshot
* Finally, it saves the generated manual boot stanzas in separate config files (outputs them to a subdirectory) and includes each file in the main config file so as not to needlessly clutter it

In case a separate /boot partition is detected only the fields relevant to / are modified ("subvol" and/or "subvolid") while the "loader" and "initrd" fields (the former may also be nested within the "options" field) remain unaffected.  
It goes without saying that the consequence of having this kind of a setup is being unable to mitigate a problematic kernel upgrade by simply booting into a snapshot.

This tool will also detect a situation where / is mounted as a snapshot (which means that you've already booted into one), issue a warning and simply exit whereas, for instance, [Snapper](http://snapper.io/) will happily continue creating its snapshots, regardless. This behavior is configurable and enabled by default.

## Prerequisites
The following conditions (some are probably superfluous at this point) must be satisfied in order for this tool to function correctly:
* mounted ESP (no automatic discovery and/or mounting is supported)
* Btrfs formatted filesystem with a subvolume mounted as /
* at least one snapshot of the root subvolume
* rEFInd installation present on the ESP
* at least one manual boot stanza (found in rEFInd's main config file or in any of the additional config files included within it) defined such that (see the [ArchWiki](https://wiki.archlinux.org/index.php/REFInd#Manual_boot_stanza) for an example) its own "options" field or any such field belonging to at least one of its sub-menus contains definitions of the following boot loader options:
  * the "root" option must be matched with the root partition (by PARTUUID or PARTLABEL), its filesystem (by UUID or LABEL) or with a block device (by name) which itself represents the root partition
  * the "rootflags" option must define a "subvol" suboption which is matched with the root subvolume's logical path and/or a "subvolid" suboption which is matched with the root subvolume's ID

## Installation
This tool is currently available only in the [AUR](https://aur.archlinux.org/packages/refind-btrfs/) which means that [Arch Linux](https://www.archlinux.org/) users (as well as users of derivative distributions, I imagine) can easily install it.

It comes with a script (refind-btrfs) which can be used to perform the described steps, on-demand (root privileges are required to run it). There is also a [systemd](https://en.wikipedia.org/wiki/Systemd) service aptly named **refind-btrfs.service** which runs the tool in a background mode of operation where the described steps are performed automatically once a change (snapshot creation or deletion) happens in the watched snapshot directories which are the same ones as those in which it searches for snapshots. If you are using Snapper along with its capability to take regular snapshots on boot this service should take these into account as well because it is set to start before Snapper's relevant service does so (the one named snapper-boot.service).  
Before running the script for the first time or enabling and starting the service make sure to at least check and perhaps modify the config file (/etc/refind-btrfs.conf) to suit your own needs.

If you wish to check the current status and log output of the running service you can do so by executing:
```
systemctl status refind-btrfs
journalctl -u refind-btrfs -b
```

Alternatively, there exists a [PyPI](https://pypi.org/project/refind-btrfs/) package but bear in mind that since [libbtrfsutil](https://github.com/kdave/btrfs-progs/tree/master/libbtrfsutil) isn't available on PyPI it needs to be already present in the system site packages (its Python bindings, to be precise) because it cannot be automatically pulled in as a dependency. Chances are that it is available for your distribution of choice (search for a package named "btrfs-progs") but you most probably already have it installed as I suppose you are using Btrfs, after all.  
Also, every file contained in [this](https://github.com/Venom1991/refind-btrfs/tree/master/src/refind_btrfs/data) directory should be copied to the following locations:
* refind-btrfs script to /usr/bin (or wherever it is you keep your system-wide executables)
* refind-btrfs.conf-sample as refind-btrfs.conf (without the "-sample" suffix) to /etc
* refind-btrfs.service to /usr/lib/systemd/system (if you are using systemd and wish to utilize the snapshot directory watching feature)

In case the custom generated boot stanza's icon feature (explained in the next section) is desired it can initially be enabled by installing this package with the following command:
```
pip install refind-btrfs[custom_icon]
```

You should also create an empty directory named "refind-btrfs" in /var/lib as the tool expects that it is present. Additionally, if you wish to be able to use the Btrfs logo embedding mode of custom icon generation you should also copy the "[icons](https://github.com/Venom1991/refind-btrfs/tree/master/src/refind_btrfs/data/icons)" directory into the previously created one.

## Configuration
The configuration file can be found at `/etc/refind-btrfs.conf`, and each option is thoroughly explained in the sample config [file](https://github.com/Venom1991/refind-btrfs/blob/master/src/refind_btrfs/data/refind-btrfs.conf-sample).  
In case you've opted to use the provided systemd service and wish to change the search directories (in this context, these are actually watched directories) in the config file while it is running you must restart it manually after doing so because the directory observer is started only once and an automatic restart is not performed.

The default configuration is meant to enable seamless integration with Snapper simply because I'm using it but the tool itself doesn't depend on it and ought to function with different setups. Also, by default the tool is configured for creating new writable snapshots intended for booting instead of in-place modification of the found snapshots' read-only flags as I believe this is the safer (or perhaps even saner) choice.  
[Timeshift](https://github.com/teejee2008/timeshift) users can try setting the [default](https://github.com/Venom1991/refind-btrfs/blob/d1e3c474ed88d7b1ad3948d75bf6f167da676c5d/src/refind_btrfs/data/refind-btrfs.conf-sample#L65) snapshot search directory to "/run/timeshift/backup/timeshift-btrfs/snapshots" and the corresponding maximum search depth to three.

If you're having trouble with the ESP being automatically located, the "esp_uuid" option could prove to be useful. If an actual UUID is provided (not the default, empty one), this value will be used to compare partition UUIDs (returned by lsblk) instead of comparing their types with hardcoded GPT UUID or MBR ID values.

Custom generated boot stanza icon support is also implemented, by default the source boot stanza's icon is reused. It is possible to provide one's own custom icon's path or to embed the Btrfs logo (comes in two variants and three sizes per each variant) into the source boot stanza's icon instead. This combined icon is then used as the generated boot stanza's icon.  
In order for these two additional modes of operation (not the default one) to work an optional dependency has to be installed - namely, the [Pillow](https://python-pillow.org) library which can be installed from the official Arch Linux [repository](https://archlinux.org/packages/community/x86_64/python-pillow/) or from [PyPI](https://pypi.org/project/Pillow/).

It is imperative that you don't just blindly try to boot into a given snapshot (simply because no errors were reported) before verifying the generated manual boot stanza, either by inspecting the file contents in which it was saved or by viewing the boot loader [options](https://www.rodsbooks.com/refind/using.html#boot_options) using rEFInd and also not before verifying the chosen snapshot's fstab file.

## Example
Given a setup such as this one:
* device /dev/nvme0n1 where:
  * the ESP is on /dev/nvme0n1p3 mounted at /efi
  * / is on /dev/nvme0n1p8
  * /boot is included in /dev/nvme0n1p8 (**not** a separate partition)
* the subvolume mounted as / is named @
* fstab file's root mount point:
```
UUID=95250e8a-5870-45df-a7b3-3b3ee8873c16 / btrfs rw,noatime,compress-force=zstd:2,ssd,space_cache=v2,commit=15,subvolid=256,subvol=/@ 0 0
```
* manual boot stanza defined in the refind.conf file (rEFInd's main config file, in this case):  
```
menuentry "Arch Linux - Stable" {
    icon /EFI/refind/icons/os_arch.png
    volume ARCH
    loader /@/boot/vmlinuz-linux
    initrd /@/boot/initramfs-linux.img
    options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@ initrd=@\boot\intel-ucode.img"
    submenuentry "Boot - fallback" {
        initrd /@/boot/initramfs-linux-fallback.img
    }
    submenuentry "Boot - terminal" {
        add_options "systemd.unit=multi-user.target"
    }
}
```
* five read-only snapshots located in the /.snapshots directory where this directory is itself mounted as a subvolume named @snapper-root (this last bit isn't particularly relevant):

    | Absolute Path          | Time of Creation    | Subvolume ID |
    | ---------------------- | ------------------- | ------------ |
    | /.snapshots/1/snapshot | 10-12-2020 01:00:00 | 498          |
    | /.snapshots/2/snapshot | 11-12-2020 02:00:00 | 499          |
    | /.snapshots/3/snapshot | 12-12-2020 03:00:00 | 500          |
    | /.snapshots/4/snapshot | 13-12-2020 04:00:00 | 501          |
    | /.snapshots/5/snapshot | 14-12-2020 05:00:00 | 502          |

* refind-btrfs.conf file changed such that the "selection_count" option is set to 3 instead of the default 5

When run, this tool should select the latest three snapshots (3, 4 and 5 from the list) and create new, writable ones from these in the directory configured by the "destination_dir" option where each snapshot is named by formatting the time of creation ("YYYY-mm-dd_HH-MM-SS") of the snapshot it was created from, adding a "rwsnap" prefix to it and also adding the original snapshot's subvolume ID as a suffix. In the rare case when different snapshots have identical timestamps their monotonic numerical IDs are there to ensure uniqueness.

Afterwards, the resultant snapshots' generated names should look like this:
* rwsnap_2020-12-12_03-00-00_ID500,
* rwsnap_2020-12-13_04-00-00_ID501 and
* rwsnap_2020-12-14_05-00-00_ID502

This naming scheme makes sense to me because when choosing a snapshot to boot from you most probably want to know when the original snapshot was created and not the one created from it because the time delay depends on when this tool was run and, if sufficiently large, can completely mislead you. If you've chosen to use the systemd service this delay shouldn't be significant (measuring a mere few seconds at worst, ideally).  

The most recent snapshot's fstab file should (after being modified) contain a root mount point which looks like this:  

```
UUID=95250e8a-5870-45df-a7b3-3b3ee8873c16 / btrfs rw,noatime,compress-force=zstd:2,ssd,space_cache=v2,commit=15,subvolid=503,subvol=/@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502 0 0
```
I'm assuming here that the next available subvolume ID was 503 (an increment of one) which implies that the writable snapshot was created immediately after the original snapshot was taken but that doesn't necessarily have to be the case and its specific value doesn't ultimately matter that much as long as it directly corresponds to the newly created snapshot which it absolutely should (otherwise, mounting it as / would fail due to the mismatch).

With this setup the newly created snapshot ended up being nested under the root subvolume but you can of course make your own adjustments as you see fit. This tool will only create the destination directory in case it doesn't exist. It won't do anything other than that.  
I've personally created another subvolume named @rw-snapshots directly under the default filesystem subvolume (ID 5) and mounted it at /root/.refind-btrfs. In my case the logical path of rwsnap_2020-12-14_05-00-00_ID502 would be /@rw-snapshots/rwsnap_2020-12-14_05-00-00_ID502.

A generated manual boot stanza's filename is formatted like "{volume}_{loader}.conf" and converted to all lowercase letters which would result in, for this example, a file named "arch_vmlinuz-linux.conf". This file is then saved in a subdirectory (relative to rEFInd's root directory) named "btrfs-snapshot-stanzas" and finally included in the main config file by appending an "include" directive which would, again for this example, look like this: "include btrfs-snapshot-stanzas/arch_vmlinuz-linux.conf". This last step is performed only once, during an initial run. Afterwards, it is detected as already being included in the main config file.

You are free to rearrange the appended include directives however you want, this tool does not care about where exactly they appear in the main config file. This is particularly useful in case you've defined multiple boot stanzas (each one pointing to a different kernel image, for example) and wish to alter the order of the boot menu entries.

The generated file's contents (representing the generated stanza) should look like this:
```
menuentry "Arch Linux - Stable (rwsnap_2020-12-14_05-00-00_ID502)" {
    icon /EFI/refind/icons/os_arch.png
    volume ARCH
    loader /@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502/boot/vmlinuz-linux
    initrd /@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502/boot/initramfs-linux.img
    options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502 initrd=@\root\.refind-btrfs\rwsnap_2020-12-14_05-00-00_ID502\boot\intel-ucode.img"
    submenuentry "Arch Linux - Stable (rwsnap_2020-12-13_04-00-00_ID501)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501 initrd=@\root\.refind-btrfs\rwsnap_2020-12-13_04-00-00_ID501\boot\intel-ucode.img"
    }
    submenuentry "Arch Linux - Stable (rwsnap_2020-12-12_03-00-00_ID500)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500 initrd=@\root\.refind-btrfs\rwsnap_2020-12-12_03-00-00_ID500\boot\intel-ucode.img"
    }
}
```
As you've probably noticed, this tool leverages rEFInd's overriding features, that is to say "submenuentry" sections are used to incorporate successive snapshots into the stanza itself by overriding the "loader", "initrd" and "options" fields of the main boot stanza which itself represents the latest snapshot.

If you've configured this tool to also take into account the original boot stanza's sub-menus the resultant generated boot stanza should look like this:
```
menuentry "Arch Linux - Stable (rwsnap_2020-12-14_05-00-00_ID502)" {
    icon /EFI/refind/icons/os_arch.png
    volume ARCH
    loader /@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502/boot/vmlinuz-linux
    initrd /@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502/boot/initramfs-linux.img
    options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502 initrd=@\root\.refind-btrfs\rwsnap_2020-12-14_05-00-00_ID502\boot\intel-ucode.img"
    submenuentry "Boot - fallback (rwsnap_2020-12-14_05-00-00_ID502)" {
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-14_05-00-00_ID502/boot/initramfs-linux-fallback.img
    }
    submenuentry "Boot - terminal (rwsnap_2020-12-14_05-00-00_ID502)" {
        add_options "systemd.unit=multi-user.target"
    }
    submenuentry "Arch Linux - Stable (rwsnap_2020-12-13_04-00-00_ID501)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501 initrd=@\root\.refind-btrfs\rwsnap_2020-12-13_04-00-00_ID501\boot\intel-ucode.img"
    }
    submenuentry "Boot - fallback (rwsnap_2020-12-13_04-00-00_ID501)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/initramfs-linux-fallback.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501 initrd=@\root\.refind-btrfs\rwsnap_2020-12-13_04-00-00_ID01\boot\intel-ucode.img"
    }
    submenuentry "Boot - terminal (rwsnap_2020-12-13_04-00-00_ID501)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-13_04-00-00_ID501 initrd=@\root\.refind-btrfs\rwsnap_2020-12-13_04-00-00_ID501\boot\intel-ucode.img systemd.unit=multi-user.target"
    }
    submenuentry "Arch Linux - Stable (rwsnap_2020-12-12_03-00-00_ID500)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500 initrd=@\root\.refind-btrfs\rwsnap_2020-12-12_03-00-00_ID500\boot\intel-ucode.img"
    }
    submenuentry "Boot - fallback (rwsnap_2020-12-12_03-00-00_ID500)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/initramfs-linux-fallback.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500 initrd=@\root\.refind-btrfs\rwsnap_2020-12-12_03-00-00_ID500\boot\intel-ucode.img"
    }
    submenuentry "Boot - terminal (rwsnap_2020-12-12_03-00-00_ID500)" {
        loader /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/vmlinuz-linux
        initrd /@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500/boot/initramfs-linux.img
        options "root=PARTUUID=048d6fcd-c88c-504d-bd51-dfc0a5bf762d rw add_efi_memmap rootflags=subvol=@/root/.refind-btrfs/rwsnap_2020-12-12_03-00-00_ID500 initrd=@\root\.refind-btrfs\rwsnap_2020-12-12_03-00-00_ID500\boot\intel-ucode.img systemd.unit=multi-user.target"
    }
}
```

A couple of notable details are the fact that the "add_options" field (if it exists) of any given sub-menu belonging to a successive snapshot is merged with the "options" field of the corresponding snapshot's sub-menu and also the fact that the latest snapshot's sub-menus implicitly inherit those main stanza's fields which they themselves do not override in the original boot stanza. Consequently, these sub-menus' definitions are intentionally similar to those of their counterparts found in the original boot stanza.

This is how an Arch Linux installation with three different kernels (XanMod, Stable and LTS) should appear in rEFInd (the default theme is shown) after this tool has successfully completed its job:

![rEFInd Screenshot Default](src/refind_btrfs/data/images/refind_screenshot_default.png)

Here, each manual boot stanza uses its own custom icon based on the default Arch Linux OS icon. The Btrfs logo is then also embedded into these icons (by setting [this](https://github.com/Venom1991/refind-btrfs/blob/4e0e629680fc581143c684e6e90958cbe26db8fc/src/refind_btrfs/data/refind-btrfs.conf-sample#L158) option to "embed_btrfs_logo") and the resultant icons are defined as part of their corresponding generated boot stanzas.

By using a darker theme (such as the [Nord](https://github.com/jaltuna/refind-theme-nord) theme - shown in the following screenshot) and by using the "inverted" Btrfs logo's variant (as opposed to the "original" one, shown in the previous screenshot), the same Arch Linux installation should appear in rEFInd looking like this:

![rEFInd Screenshot Nord](src/refind_btrfs/data/images/refind_screenshot_nord.png)

## Implementation
Most relevant dependencies:
* block device and ESP information is gathered using [lsblk](https://man7.org/linux/man-pages/man8/lsblk.8.html) (supports JSON output)
* mtab information is gathered using [findmnt](https://man7.org/linux/man-pages/man8/findmnt.8.html) (same remark applies regarding the output)
* all of the mentioned subvolume and snapshot operations are performed using [libbtrfsutil](https://github.com/kdave/btrfs-progs/tree/master/libbtrfsutil)
* [ANLTR4](https://github.com/antlr/antlr4) was used to generate the lexer and parser required for rEFInd config files' analyses
* [Watchdog](https://github.com/gorakhargosh/watchdog) is used for the snapshot directory watching feature and is utilized in a non-recursive fashion (watches all of the configured search directories as well as directories nested under these, up to configured maximum depth reduced by one)
* [python-systemd](https://github.com/systemd/python-systemd) is used for notifying systemd about the service's readiness (because its type is set to "notify") and also for logging to the journal

[Shelve](https://docs.python.org/3/library/shelve.html) is used to keep track of the currently processed snapshots and also to avoid analyzing the rEFInd config file each time as it is quite an expensive task. A new analysis is performed in case the current and actual times of modification differ ([st_mtime](https://docs.python.org/3/library/os.html#os.stat_result.st_mtime) is used for that purpose) which means that simply touching the file should also trigger a new analysis (file hashes aren't computed nor consequently compared). This fact also explains the need for a directory in /var/lib as the database file resides in it.

The directory watching mechanism is a bit unfortunate in a sense that it is way overkill for the task at hand. Even though Watchdog is a great, battle-tested library and many people use it, I feel that this solution isn't particularly well suited to this tool but it will simply have to suffice for now as I don't have a better idea (grub-btrfs also relies on a similar mechanism), at least not until the Btrfs authors develop [this](https://btrfs.wiki.kernel.org/index.php/Project_ideas#Send_notifications_about_important_events) useful feature or something akin to it.

## Further Efforts
Currently, this tool won't clean up after itself in case, for instance, creating writable snapshots succeeds but generating a manual boot stanza from them fails (for whatever reason). The correct thing to do would be to delete these snapshots altogether (thus undoing the changes made by the previous step or roll-backing as it is often called) meaning that the whole run is considered to be successful if and only if all of the steps it performed were successful.  
This behavior would then be comparable with the [atomicity](https://en.wikipedia.org/wiki/Atomicity_(database_systems)) principle to which most database systems adhere. The previously mentioned scenario is covered in a different way by issuing a relevant warning on the next attempt to run the tool (because the writable snapshots already exist at this point in time and they aren't expected to) but also continuing to perform successive steps. This isn't a general solution, of course, but more of a workaround for this one possible scenario.  
With that said, being somehow able to preview changes proposed by this tool would also be beneficial, especially after altering its configuration.

A more elaborate snapshot selection mechanism would be appreciated, comparable to what Snapper does, that is selecting a configurable number of daily, weekly, etc. snapshots to be included in the generated manual boot stanza.

Generated boot stanzas' names are initialized using a hardcoded format string which is not ideal. It would be more convenient to provide a way for users to define their own format string using a combination of predefined variables (time of the source snapshot's creation, its numerical ID, etc.) along with some entirely arbitrary parts.

But, before trying to implement any of these shiny features this project's source code should be properly documented and tests should be written for it because, presently, there aren't any. The latter is also a pretty considerable effort due to the sheer number of different test cases. Luckily, all of the external dependencies (OS commands, third-party library calls and similar) are abstracted away which means that no significant preparatory steps regarding the codebase to be tested are required beforehand.


================================================
FILE: pyproject.toml
================================================
[build-system]
requires = ["setuptools", "wheel"]
build-backend = "setuptools.build_meta"


================================================
FILE: setup.cfg
================================================
[metadata]
name = refind_btrfs
version = 0.6.5
description = Generate rEFInd manual boot stanzas from Btrfs snapshots
long_description = file: README.md
keywords = rEFInd, btrfs
url = https://github.com/Venom1991/refind-btrfs
author = Luka Žaja
author_email = luka.zaja@protonmail.com
maintainer = Luka Žaja
maintainer_email = luka.zaja@protonmail.com
license = GNU General Public License v3 or later (GPLv3+)
license_file = LICENSE.txt
platforms = Linux
classifiers = 
        Development Status :: 4 - Beta
        Intended Audience :: End Users/Desktop
        License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
        Natural Language :: English
        Operating System :: POSIX :: Linux
        Programming Language :: Python :: 3.11
        Topic :: System :: Boot

[options]
package_dir =
    =src
packages = find:
include_package_data = True
install_requires =
    antlr4-python3-runtime
    injector
    more-itertools
    pid
    semantic-version
    systemd-python
    tomlkit
    transitions
    typeguard
    watchdog
python_requires = >= 3.11

[options.extras_require]
custom_icon = Pillow

[options.entry_points]
console_scripts =
    refind-btrfs = refind_btrfs:main

[options.packages.find]
where = src

[bdist_wheel]
universal = False


================================================
FILE: setup.py
================================================
# region Licensing
# SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

""" refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""
# endregion

import setuptools

with open("README.md", "r", encoding="utf-8") as readme:
    long_description = readme.read()

setuptools.setup(
    name="refind-btrfs",
    version="0.6.5",
    author="Luka Žaja",
    author_email="luka.zaja@protonmail.com",
    description="Generate rEFInd manual boot stanzas from Btrfs snapshots",
    long_description=long_description,
    long_description_content_type="text/markdown",
    keywords="rEFInd, btrfs",
    url="https://github.com/Venom1991/refind-btrfs",
    classifiers=[
        "Development Status :: 4 - Beta",
        "Intended Audience :: End Users/Desktop",
        "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
        "Natural Language :: English",
        "Operating System :: POSIX :: Linux",
        "Programming Language :: Python :: 3.11",
        "Topic :: System :: Boot",
    ],
    package_dir={"": "src"},
    packages=setuptools.find_packages(where="src"),
    include_package_data=True,
    install_requires=[
        "antlr4-python3-runtime",
        "injector",
        "more-itertools",
        "pid",
        "semantic-version",
        "systemd-python",
        "tomlkit",
        "transitions",
        "typeguard",
        "watchdog",
    ],
    entry_points={
        "console_scripts": [
            "refind-btrfs=refind_btrfs:main",
        ],
    },
    extras_require={"custom_icon": ["Pillow"]},
    python_requires=">=3.11",
)


================================================
FILE: src/refind_btrfs/__init__.py
================================================
# region Licensing
# SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

""" refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""
# endregion

import os
from argparse import ArgumentParser
from typing import Optional

from injector import Injector

from refind_btrfs.common import constants
from refind_btrfs.common.abc import BaseRunner
from refind_btrfs.common.abc.factories import BaseLoggerFactory
from refind_btrfs.common.enums import RunMode
from refind_btrfs.common.exceptions import PackageConfigError
from refind_btrfs.utility.helpers import check_access_rights, checked_cast, none_throws
from refind_btrfs.utility.injector_modules import CLIModule, WatchdogModule


def initialize_injector() -> Optional[Injector]:
    one_time_mode = RunMode.ONE_TIME.value
    background_mode = RunMode.BACKGROUND.value
    parser = ArgumentParser(
        prog="refind-btrfs",
        usage="%(prog)s [options]",
        description="Generate rEFInd manual boot stanzas from Btrfs snapshots",
    )

    parser.add_argument(
        "-rm",
        "--run-mode",
        help="Mode of execution",
        choices=[one_time_mode, background_mode],
        type=str,
        nargs="?",
        const=one_time_mode,
        default=one_time_mode,
    )

    arguments = parser.parse_args()
    run_mode = checked_cast(str, none_throws(arguments.run_mode))

    if run_mode == one_time_mode:
        return Injector(CLIModule)
    elif run_mode == background_mode:
        return Injector(WatchdogModule)

    return None


def main() -> int:
    exit_code = os.EX_OK
    injector = none_throws(initialize_injector())
    logger_factory = injector.get(BaseLoggerFactory)
    logger = logger_factory.logger(__name__)

    try:
        check_access_rights()

        runner = injector.get(BaseRunner)
        exit_code = runner.run()
    except PackageConfigError as e:
        exit_code = constants.EX_NOT_OK
        logger.error(e.formatted_message)
    except PermissionError as e:
        exit_code = e.errno
        logger.error(e.strerror)
    except Exception:
        exit_code = constants.EX_NOT_OK
        logger.exception(constants.MESSAGE_UNEXPECTED_ERROR)

    return exit_code


================================================
FILE: src/refind_btrfs/__main__.py
================================================
# region Licensing
# SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

""" refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""
# endregion

import sys

from . import main

if __name__ == "__main__":
    sys.exit(main())


================================================
FILE: src/refind_btrfs/boot/__init__.py
================================================
# region Licensing
# SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

""" refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""
# endregion

from .boot_options import BootOptions
from .boot_stanza import BootStanza
from .refind_config import RefindConfig
from .sub_menu import SubMenu


================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigLexer.g4
================================================
/*
SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>

SPDX-License-Identifier: GPL-3.0-or-later

refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

lexer grammar RefindConfigLexer;

WHITESPACE : [ \t]+ -> skip ;
NEWLINE : '\r'?'\n' ->  skip ;
EMPTY : WHITESPACE? NEWLINE -> skip ;
COMMENT : '#' (~[\n])* NEWLINE? -> skip ;
IGNORED_OPTION
    : (
          'also_scan_dirs'
        | 'also_scan_tools'
        | 'banner'
        | 'banner_scale'
        | 'big_icon_size'
        | 'csr_values'
        | 'default_selection'
        | 'don\'t_scan_dirs'
        | 'don\'t_scan_files'
        | 'don\'t_scan_firmware'
        | 'don\'t_scan_tools'
        | 'don\'t_scan_volumes'
        | 'dont_scan_dirs'
        | 'dont_scan_files'
        | 'dont_scan_firmware'
        | 'dont_scan_tools'
        | 'dont_scan_volumes'
        | 'enable_and_lock_vmx'
        | 'enable_mouse'
        | 'enable_touch'
        | 'extra_kernel_version_strings'
        | 'fold_linux_kernels'
        | 'follow_symlinks'
        | 'font'
        | 'hideui'
        | 'icons_dir'
        | 'linux_prefixes'
        | 'log_level'
        | 'max_tags'
        | 'mouse_size'
        | 'mouse_speed'
        | 'resolution'
        | 'scan_all_linux_kernels'
        | 'scan_delay'
        | 'scan_driver_dirs'
        | 'scanfor'
        | 'screensaver'
        | 'selection_big'
        | 'selection_small'
        | 'showtools'
        | 'shutdown_after_timeout'
        | 'small_icon_size'
        | 'spoof_osx_version'
        | 'support_gzipped_loaders'
        | 'textmode'
        | 'textonly'
        | 'timeout'
        | 'uefi_deep_legacy_scan'
        | 'use_graphics_for'
        | 'use_nvram'
        | 'windows_recovery_files'
        | 'write_systemd_vars'
      ) (~[\n])* NEWLINE? -> skip ;

MENU_ENTRY : (MAIN_MENU_ENTRY | SUB_MENU_ENTRY) ;
fragment MAIN_MENU_ENTRY : 'menuentry' ;
fragment SUB_MENU_ENTRY : 'submenuentry' ;

VOLUME : 'volume' ;
LOADER : 'loader' ;
INITRD : 'initrd' ;
ICON : 'icon' ;
OS_TYPE : 'ostype' WHITESPACE -> pushMode(STRICT_PARAMETER_MODE) ;
GRAPHICS : 'graphics' WHITESPACE -> pushMode(STRICT_PARAMETER_MODE) ;
BOOT_OPTIONS : 'options' ;
ADD_BOOT_OPTIONS : 'add_options' ;
FIRMWARE_BOOTNUM : 'firmware_bootnum' ;
DISABLED : 'disabled' ;

INCLUDE : 'include' ;

OPEN_BRACE : '{' ;
CLOSE_BRACE : '}' ;

HEX_INTEGER : HEX_DIGIT+ ;
fragment HEX_DIGIT: [0-9a-fA-F] ;

STRING: (SINGLE_QUOTED_STRING | DOUBLE_QUOTED_STRING | UNQUOTED_STRING) ;
fragment SINGLE_QUOTED_STRING : '\'' (~[\n])+ '\'' ;
fragment DOUBLE_QUOTED_STRING : '"' (~[\n])+ '"' ;
fragment UNQUOTED_STRING : (~[ \t\n])+ ;

mode STRICT_PARAMETER_MODE;

OS_TYPE_PARAMETER : ('MacOS' | 'Linux' | 'ELILO' | 'Windows' | 'XOM') -> popMode ;
GRAPHICS_PARAMETER : ('on' | 'off') -> popMode ;


================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigLexer.interp
================================================
token literal names:
null
null
null
null
null
null
null
'volume'
'loader'
'initrd'
'icon'
null
null
'options'
'add_options'
'firmware_bootnum'
'disabled'
'include'
'{'
'}'
null
null
null
null

token symbolic names:
null
WHITESPACE
NEWLINE
EMPTY
COMMENT
IGNORED_OPTION
MENU_ENTRY
VOLUME
LOADER
INITRD
ICON
OS_TYPE
GRAPHICS
BOOT_OPTIONS
ADD_BOOT_OPTIONS
FIRMWARE_BOOTNUM
DISABLED
INCLUDE
OPEN_BRACE
CLOSE_BRACE
HEX_INTEGER
STRING
OS_TYPE_PARAMETER
GRAPHICS_PARAMETER

rule names:
WHITESPACE
NEWLINE
EMPTY
COMMENT
IGNORED_OPTION
MENU_ENTRY
MAIN_MENU_ENTRY
SUB_MENU_ENTRY
VOLUME
LOADER
INITRD
ICON
OS_TYPE
GRAPHICS
BOOT_OPTIONS
ADD_BOOT_OPTIONS
FIRMWARE_BOOTNUM
DISABLED
INCLUDE
OPEN_BRACE
CLOSE_BRACE
HEX_INTEGER
HEX_DIGIT
STRING
SINGLE_QUOTED_STRING
DOUBLE_QUOTED_STRING
UNQUOTED_STRING
OS_TYPE_PARAMETER
GRAPHICS_PARAMETER

channel names:
DEFAULT_TOKEN_CHANNEL
HIDDEN

mode names:
DEFAULT_MODE
STRICT_PARAMETER_MODE

atn:
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================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigLexer.py
================================================
# Generated from c:/Users/Luka/Projects/Python/refind-btrfs/src/refind_btrfs/boot/antlr4/RefindConfigLexer.g4 by ANTLR 4.13.1
from antlr4 import *
from io import StringIO
import sys
if sys.version_info[1] > 5:
    from typing import TextIO
else:
    from typing.io import TextIO


def serializedATN():
    return [
        4,0,23,1036,6,-1,6,-1,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,
        5,7,5,2,6,7,6,2,7,7,7,2,8,7,8,2,9,7,9,2,10,7,10,2,11,7,11,2,12,7,
        12,2,13,7,13,2,14,7,14,2,15,7,15,2,16,7,16,2,17,7,17,2,18,7,18,2,
        19,7,19,2,20,7,20,2,21,7,21,2,22,7,22,2,23,7,23,2,24,7,24,2,25,7,
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        2,1,3,1,3,5,3,84,8,3,10,3,12,3,87,9,3,1,3,3,3,90,8,3,1,3,1,3,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
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        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
        1,4,1,4,1,4,3,4,818,8,4,1,4,5,4,821,8,4,10,4,12,4,824,9,4,1,4,3,
        4,827,8,4,1,4,1,4,1,5,1,5,3,5,833,8,5,1,6,1,6,1,6,1,6,1,6,1,6,1,
        6,1,6,1,6,1,6,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,7,1,
        7,1,8,1,8,1,8,1,8,1,8,1,8,1,8,1,9,1,9,1,9,1,9,1,9,1,9,1,9,1,10,1,
        10,1,10,1,10,1,10,1,10,1,10,1,11,1,11,1,11,1,11,1,11,1,12,1,12,1,
        12,1,12,1,12,1,12,1,12,1,12,1,12,1,12,1,12,1,13,1,13,1,13,1,13,1,
        13,1,13,1,13,1,13,1,13,1,13,1,13,1,13,1,13,1,14,1,14,1,14,1,14,1,
        14,1,14,1,14,1,14,1,15,1,15,1,15,1,15,1,15,1,15,1,15,1,15,1,15,1,
        15,1,15,1,15,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,
        16,1,16,1,16,1,16,1,16,1,16,1,16,1,17,1,17,1,17,1,17,1,17,1,17,1,
        17,1,17,1,17,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,19,1,19,1,
        20,1,20,1,21,4,21,967,8,21,11,21,12,21,968,1,22,1,22,1,23,1,23,1,
        23,3,23,976,8,23,1,24,1,24,4,24,980,8,24,11,24,12,24,981,1,24,1,
        24,1,25,1,25,4,25,988,8,25,11,25,12,25,989,1,25,1,25,1,26,4,26,995,
        8,26,11,26,12,26,996,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,
        1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,1,27,
        1,27,1,27,1,27,3,27,1024,8,27,1,27,1,27,1,28,1,28,1,28,1,28,1,28,
        3,28,1033,8,28,1,28,1,28,0,0,29,2,1,4,2,6,3,8,4,10,5,12,6,14,0,16,
        0,18,7,20,8,22,9,24,10,26,11,28,12,30,13,32,14,34,15,36,16,38,17,
        40,18,42,19,44,20,46,0,48,21,50,0,52,0,54,0,56,22,58,23,2,0,1,4,
        2,0,9,9,32,32,1,0,10,10,3,0,48,57,65,70,97,102,2,0,9,10,32,32,1098,
        0,2,1,0,0,0,0,4,1,0,0,0,0,6,1,0,0,0,0,8,1,0,0,0,0,10,1,0,0,0,0,12,
        1,0,0,0,0,18,1,0,0,0,0,20,1,0,0,0,0,22,1,0,0,0,0,24,1,0,0,0,0,26,
        1,0,0,0,0,28,1,0,0,0,0,30,1,0,0,0,0,32,1,0,0,0,0,34,1,0,0,0,0,36,
        1,0,0,0,0,38,1,0,0,0,0,40,1,0,0,0,0,42,1,0,0,0,0,44,1,0,0,0,0,48,
        1,0,0,0,1,56,1,0,0,0,1,58,1,0,0,0,2,61,1,0,0,0,4,68,1,0,0,0,6,75,
        1,0,0,0,8,81,1,0,0,0,10,817,1,0,0,0,12,832,1,0,0,0,14,834,1,0,0,
        0,16,844,1,0,0,0,18,857,1,0,0,0,20,864,1,0,0,0,22,871,1,0,0,0,24,
        878,1,0,0,0,26,883,1,0,0,0,28,894,1,0,0,0,30,907,1,0,0,0,32,915,
        1,0,0,0,34,927,1,0,0,0,36,944,1,0,0,0,38,953,1,0,0,0,40,961,1,0,
        0,0,42,963,1,0,0,0,44,966,1,0,0,0,46,970,1,0,0,0,48,975,1,0,0,0,
        50,977,1,0,0,0,52,985,1,0,0,0,54,994,1,0,0,0,56,1023,1,0,0,0,58,
        1032,1,0,0,0,60,62,7,0,0,0,61,60,1,0,0,0,62,63,1,0,0,0,63,61,1,0,
        0,0,63,64,1,0,0,0,64,65,1,0,0,0,65,66,6,0,0,0,66,3,1,0,0,0,67,69,
        5,13,0,0,68,67,1,0,0,0,68,69,1,0,0,0,69,70,1,0,0,0,70,71,5,10,0,
        0,71,72,1,0,0,0,72,73,6,1,0,0,73,5,1,0,0,0,74,76,3,2,0,0,75,74,1,
        0,0,0,75,76,1,0,0,0,76,77,1,0,0,0,77,78,3,4,1,0,78,79,1,0,0,0,79,
        80,6,2,0,0,80,7,1,0,0,0,81,85,5,35,0,0,82,84,8,1,0,0,83,82,1,0,0,
        0,84,87,1,0,0,0,85,83,1,0,0,0,85,86,1,0,0,0,86,89,1,0,0,0,87,85,
        1,0,0,0,88,90,3,4,1,0,89,88,1,0,0,0,89,90,1,0,0,0,90,91,1,0,0,0,
        91,92,6,3,0,0,92,9,1,0,0,0,93,94,5,97,0,0,94,95,5,108,0,0,95,96,
        5,115,0,0,96,97,5,111,0,0,97,98,5,95,0,0,98,99,5,115,0,0,99,100,
        5,99,0,0,100,101,5,97,0,0,101,102,5,110,0,0,102,103,5,95,0,0,103,
        104,5,100,0,0,104,105,5,105,0,0,105,106,5,114,0,0,106,818,5,115,
        0,0,107,108,5,97,0,0,108,109,5,108,0,0,109,110,5,115,0,0,110,111,
        5,111,0,0,111,112,5,95,0,0,112,113,5,115,0,0,113,114,5,99,0,0,114,
        115,5,97,0,0,115,116,5,110,0,0,116,117,5,95,0,0,117,118,5,116,0,
        0,118,119,5,111,0,0,119,120,5,111,0,0,120,121,5,108,0,0,121,818,
        5,115,0,0,122,123,5,98,0,0,123,124,5,97,0,0,124,125,5,110,0,0,125,
        126,5,110,0,0,126,127,5,101,0,0,127,818,5,114,0,0,128,129,5,98,0,
        0,129,130,5,97,0,0,130,131,5,110,0,0,131,132,5,110,0,0,132,133,5,
        101,0,0,133,134,5,114,0,0,134,135,5,95,0,0,135,136,5,115,0,0,136,
        137,5,99,0,0,137,138,5,97,0,0,138,139,5,108,0,0,139,818,5,101,0,
        0,140,141,5,98,0,0,141,142,5,105,0,0,142,143,5,103,0,0,143,144,5,
        95,0,0,144,145,5,105,0,0,145,146,5,99,0,0,146,147,5,111,0,0,147,
        148,5,110,0,0,148,149,5,95,0,0,149,150,5,115,0,0,150,151,5,105,0,
        0,151,152,5,122,0,0,152,818,5,101,0,0,153,154,5,99,0,0,154,155,5,
        115,0,0,155,156,5,114,0,0,156,157,5,95,0,0,157,158,5,118,0,0,158,
        159,5,97,0,0,159,160,5,108,0,0,160,161,5,117,0,0,161,162,5,101,0,
        0,162,818,5,115,0,0,163,164,5,100,0,0,164,165,5,101,0,0,165,166,
        5,102,0,0,166,167,5,97,0,0,167,168,5,117,0,0,168,169,5,108,0,0,169,
        170,5,116,0,0,170,171,5,95,0,0,171,172,5,115,0,0,172,173,5,101,0,
        0,173,174,5,108,0,0,174,175,5,101,0,0,175,176,5,99,0,0,176,177,5,
        116,0,0,177,178,5,105,0,0,178,179,5,111,0,0,179,818,5,110,0,0,180,
        181,5,100,0,0,181,182,5,111,0,0,182,183,5,110,0,0,183,184,5,39,0,
        0,184,185,5,116,0,0,185,186,5,95,0,0,186,187,5,115,0,0,187,188,5,
        99,0,0,188,189,5,97,0,0,189,190,5,110,0,0,190,191,5,95,0,0,191,192,
        5,100,0,0,192,193,5,105,0,0,193,194,5,114,0,0,194,818,5,115,0,0,
        195,196,5,100,0,0,196,197,5,111,0,0,197,198,5,110,0,0,198,199,5,
        39,0,0,199,200,5,116,0,0,200,201,5,95,0,0,201,202,5,115,0,0,202,
        203,5,99,0,0,203,204,5,97,0,0,204,205,5,110,0,0,205,206,5,95,0,0,
        206,207,5,102,0,0,207,208,5,105,0,0,208,209,5,108,0,0,209,210,5,
        101,0,0,210,818,5,115,0,0,211,212,5,100,0,0,212,213,5,111,0,0,213,
        214,5,110,0,0,214,215,5,39,0,0,215,216,5,116,0,0,216,217,5,95,0,
        0,217,218,5,115,0,0,218,219,5,99,0,0,219,220,5,97,0,0,220,221,5,
        110,0,0,221,222,5,95,0,0,222,223,5,102,0,0,223,224,5,105,0,0,224,
        225,5,114,0,0,225,226,5,109,0,0,226,227,5,119,0,0,227,228,5,97,0,
        0,228,229,5,114,0,0,229,818,5,101,0,0,230,231,5,100,0,0,231,232,
        5,111,0,0,232,233,5,110,0,0,233,234,5,39,0,0,234,235,5,116,0,0,235,
        236,5,95,0,0,236,237,5,115,0,0,237,238,5,99,0,0,238,239,5,97,0,0,
        239,240,5,110,0,0,240,241,5,95,0,0,241,242,5,116,0,0,242,243,5,111,
        0,0,243,244,5,111,0,0,244,245,5,108,0,0,245,818,5,115,0,0,246,247,
        5,100,0,0,247,248,5,111,0,0,248,249,5,110,0,0,249,250,5,39,0,0,250,
        251,5,116,0,0,251,252,5,95,0,0,252,253,5,115,0,0,253,254,5,99,0,
        0,254,255,5,97,0,0,255,256,5,110,0,0,256,257,5,95,0,0,257,258,5,
        118,0,0,258,259,5,111,0,0,259,260,5,108,0,0,260,261,5,117,0,0,261,
        262,5,109,0,0,262,263,5,101,0,0,263,818,5,115,0,0,264,265,5,100,
        0,0,265,266,5,111,0,0,266,267,5,110,0,0,267,268,5,116,0,0,268,269,
        5,95,0,0,269,270,5,115,0,0,270,271,5,99,0,0,271,272,5,97,0,0,272,
        273,5,110,0,0,273,274,5,95,0,0,274,275,5,100,0,0,275,276,5,105,0,
        0,276,277,5,114,0,0,277,818,5,115,0,0,278,279,5,100,0,0,279,280,
        5,111,0,0,280,281,5,110,0,0,281,282,5,116,0,0,282,283,5,95,0,0,283,
        284,5,115,0,0,284,285,5,99,0,0,285,286,5,97,0,0,286,287,5,110,0,
        0,287,288,5,95,0,0,288,289,5,102,0,0,289,290,5,105,0,0,290,291,5,
        108,0,0,291,292,5,101,0,0,292,818,5,115,0,0,293,294,5,100,0,0,294,
        295,5,111,0,0,295,296,5,110,0,0,296,297,5,116,0,0,297,298,5,95,0,
        0,298,299,5,115,0,0,299,300,5,99,0,0,300,301,5,97,0,0,301,302,5,
        110,0,0,302,303,5,95,0,0,303,304,5,102,0,0,304,305,5,105,0,0,305,
        306,5,114,0,0,306,307,5,109,0,0,307,308,5,119,0,0,308,309,5,97,0,
        0,309,310,5,114,0,0,310,818,5,101,0,0,311,312,5,100,0,0,312,313,
        5,111,0,0,313,314,5,110,0,0,314,315,5,116,0,0,315,316,5,95,0,0,316,
        317,5,115,0,0,317,318,5,99,0,0,318,319,5,97,0,0,319,320,5,110,0,
        0,320,321,5,95,0,0,321,322,5,116,0,0,322,323,5,111,0,0,323,324,5,
        111,0,0,324,325,5,108,0,0,325,818,5,115,0,0,326,327,5,100,0,0,327,
        328,5,111,0,0,328,329,5,110,0,0,329,330,5,116,0,0,330,331,5,95,0,
        0,331,332,5,115,0,0,332,333,5,99,0,0,333,334,5,97,0,0,334,335,5,
        110,0,0,335,336,5,95,0,0,336,337,5,118,0,0,337,338,5,111,0,0,338,
        339,5,108,0,0,339,340,5,117,0,0,340,341,5,109,0,0,341,342,5,101,
        0,0,342,818,5,115,0,0,343,344,5,101,0,0,344,345,5,110,0,0,345,346,
        5,97,0,0,346,347,5,98,0,0,347,348,5,108,0,0,348,349,5,101,0,0,349,
        350,5,95,0,0,350,351,5,97,0,0,351,352,5,110,0,0,352,353,5,100,0,
        0,353,354,5,95,0,0,354,355,5,108,0,0,355,356,5,111,0,0,356,357,5,
        99,0,0,357,358,5,107,0,0,358,359,5,95,0,0,359,360,5,118,0,0,360,
        361,5,109,0,0,361,818,5,120,0,0,362,363,5,101,0,0,363,364,5,110,
        0,0,364,365,5,97,0,0,365,366,5,98,0,0,366,367,5,108,0,0,367,368,
        5,101,0,0,368,369,5,95,0,0,369,370,5,109,0,0,370,371,5,111,0,0,371,
        372,5,117,0,0,372,373,5,115,0,0,373,818,5,101,0,0,374,375,5,101,
        0,0,375,376,5,110,0,0,376,377,5,97,0,0,377,378,5,98,0,0,378,379,
        5,108,0,0,379,380,5,101,0,0,380,381,5,95,0,0,381,382,5,116,0,0,382,
        383,5,111,0,0,383,384,5,117,0,0,384,385,5,99,0,0,385,818,5,104,0,
        0,386,387,5,101,0,0,387,388,5,120,0,0,388,389,5,116,0,0,389,390,
        5,114,0,0,390,391,5,97,0,0,391,392,5,95,0,0,392,393,5,107,0,0,393,
        394,5,101,0,0,394,395,5,114,0,0,395,396,5,110,0,0,396,397,5,101,
        0,0,397,398,5,108,0,0,398,399,5,95,0,0,399,400,5,118,0,0,400,401,
        5,101,0,0,401,402,5,114,0,0,402,403,5,115,0,0,403,404,5,105,0,0,
        404,405,5,111,0,0,405,406,5,110,0,0,406,407,5,95,0,0,407,408,5,115,
        0,0,408,409,5,116,0,0,409,410,5,114,0,0,410,411,5,105,0,0,411,412,
        5,110,0,0,412,413,5,103,0,0,413,818,5,115,0,0,414,415,5,102,0,0,
        415,416,5,111,0,0,416,417,5,108,0,0,417,418,5,100,0,0,418,419,5,
        95,0,0,419,420,5,108,0,0,420,421,5,105,0,0,421,422,5,110,0,0,422,
        423,5,117,0,0,423,424,5,120,0,0,424,425,5,95,0,0,425,426,5,107,0,
        0,426,427,5,101,0,0,427,428,5,114,0,0,428,429,5,110,0,0,429,430,
        5,101,0,0,430,431,5,108,0,0,431,818,5,115,0,0,432,433,5,102,0,0,
        433,434,5,111,0,0,434,435,5,108,0,0,435,436,5,108,0,0,436,437,5,
        111,0,0,437,438,5,119,0,0,438,439,5,95,0,0,439,440,5,115,0,0,440,
        441,5,121,0,0,441,442,5,109,0,0,442,443,5,108,0,0,443,444,5,105,
        0,0,444,445,5,110,0,0,445,446,5,107,0,0,446,818,5,115,0,0,447,448,
        5,102,0,0,448,449,5,111,0,0,449,450,5,110,0,0,450,818,5,116,0,0,
        451,452,5,104,0,0,452,453,5,105,0,0,453,454,5,100,0,0,454,455,5,
        101,0,0,455,456,5,117,0,0,456,818,5,105,0,0,457,458,5,105,0,0,458,
        459,5,99,0,0,459,460,5,111,0,0,460,461,5,110,0,0,461,462,5,115,0,
        0,462,463,5,95,0,0,463,464,5,100,0,0,464,465,5,105,0,0,465,818,5,
        114,0,0,466,467,5,108,0,0,467,468,5,105,0,0,468,469,5,110,0,0,469,
        470,5,117,0,0,470,471,5,120,0,0,471,472,5,95,0,0,472,473,5,112,0,
        0,473,474,5,114,0,0,474,475,5,101,0,0,475,476,5,102,0,0,476,477,
        5,105,0,0,477,478,5,120,0,0,478,479,5,101,0,0,479,818,5,115,0,0,
        480,481,5,108,0,0,481,482,5,111,0,0,482,483,5,103,0,0,483,484,5,
        95,0,0,484,485,5,108,0,0,485,486,5,101,0,0,486,487,5,118,0,0,487,
        488,5,101,0,0,488,818,5,108,0,0,489,490,5,109,0,0,490,491,5,97,0,
        0,491,492,5,120,0,0,492,493,5,95,0,0,493,494,5,116,0,0,494,495,5,
        97,0,0,495,496,5,103,0,0,496,818,5,115,0,0,497,498,5,109,0,0,498,
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        95,0,0,513,514,5,115,0,0,514,515,5,112,0,0,515,516,5,101,0,0,516,
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        527,818,5,110,0,0,528,529,5,115,0,0,529,530,5,99,0,0,530,531,5,97,
        0,0,531,532,5,110,0,0,532,533,5,95,0,0,533,534,5,97,0,0,534,535,
        5,108,0,0,535,536,5,108,0,0,536,537,5,95,0,0,537,538,5,108,0,0,538,
        539,5,105,0,0,539,540,5,110,0,0,540,541,5,117,0,0,541,542,5,120,
        0,0,542,543,5,95,0,0,543,544,5,107,0,0,544,545,5,101,0,0,545,546,
        5,114,0,0,546,547,5,110,0,0,547,548,5,101,0,0,548,549,5,108,0,0,
        549,818,5,115,0,0,550,551,5,115,0,0,551,552,5,99,0,0,552,553,5,97,
        0,0,553,554,5,110,0,0,554,555,5,95,0,0,555,556,5,100,0,0,556,557,
        5,101,0,0,557,558,5,108,0,0,558,559,5,97,0,0,559,818,5,121,0,0,560,
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        0,564,565,5,95,0,0,565,566,5,100,0,0,566,567,5,114,0,0,567,568,5,
        105,0,0,568,569,5,118,0,0,569,570,5,101,0,0,570,571,5,114,0,0,571,
        572,5,95,0,0,572,573,5,100,0,0,573,574,5,105,0,0,574,575,5,114,0,
        0,575,818,5,115,0,0,576,577,5,115,0,0,577,578,5,99,0,0,578,579,5,
        97,0,0,579,580,5,110,0,0,580,581,5,102,0,0,581,582,5,111,0,0,582,
        818,5,114,0,0,583,584,5,115,0,0,584,585,5,99,0,0,585,586,5,114,0,
        0,586,587,5,101,0,0,587,588,5,101,0,0,588,589,5,110,0,0,589,590,
        5,115,0,0,590,591,5,97,0,0,591,592,5,118,0,0,592,593,5,101,0,0,593,
        818,5,114,0,0,594,595,5,115,0,0,595,596,5,101,0,0,596,597,5,108,
        0,0,597,598,5,101,0,0,598,599,5,99,0,0,599,600,5,116,0,0,600,601,
        5,105,0,0,601,602,5,111,0,0,602,603,5,110,0,0,603,604,5,95,0,0,604,
        605,5,98,0,0,605,606,5,105,0,0,606,818,5,103,0,0,607,608,5,115,0,
        0,608,609,5,101,0,0,609,610,5,108,0,0,610,611,5,101,0,0,611,612,
        5,99,0,0,612,613,5,116,0,0,613,614,5,105,0,0,614,615,5,111,0,0,615,
        616,5,110,0,0,616,617,5,95,0,0,617,618,5,115,0,0,618,619,5,109,0,
        0,619,620,5,97,0,0,620,621,5,108,0,0,621,818,5,108,0,0,622,623,5,
        115,0,0,623,624,5,104,0,0,624,625,5,111,0,0,625,626,5,119,0,0,626,
        627,5,116,0,0,627,628,5,111,0,0,628,629,5,111,0,0,629,630,5,108,
        0,0,630,818,5,115,0,0,631,632,5,115,0,0,632,633,5,104,0,0,633,634,
        5,117,0,0,634,635,5,116,0,0,635,636,5,100,0,0,636,637,5,111,0,0,
        637,638,5,119,0,0,638,639,5,110,0,0,639,640,5,95,0,0,640,641,5,97,
        0,0,641,642,5,102,0,0,642,643,5,116,0,0,643,644,5,101,0,0,644,645,
        5,114,0,0,645,646,5,95,0,0,646,647,5,116,0,0,647,648,5,105,0,0,648,
        649,5,109,0,0,649,650,5,101,0,0,650,651,5,111,0,0,651,652,5,117,
        0,0,652,818,5,116,0,0,653,654,5,115,0,0,654,655,5,109,0,0,655,656,
        5,97,0,0,656,657,5,108,0,0,657,658,5,108,0,0,658,659,5,95,0,0,659,
        660,5,105,0,0,660,661,5,99,0,0,661,662,5,111,0,0,662,663,5,110,0,
        0,663,664,5,95,0,0,664,665,5,115,0,0,665,666,5,105,0,0,666,667,5,
        122,0,0,667,818,5,101,0,0,668,669,5,115,0,0,669,670,5,112,0,0,670,
        671,5,111,0,0,671,672,5,111,0,0,672,673,5,102,0,0,673,674,5,95,0,
        0,674,675,5,111,0,0,675,676,5,115,0,0,676,677,5,120,0,0,677,678,
        5,95,0,0,678,679,5,118,0,0,679,680,5,101,0,0,680,681,5,114,0,0,681,
        682,5,115,0,0,682,683,5,105,0,0,683,684,5,111,0,0,684,818,5,110,
        0,0,685,686,5,115,0,0,686,687,5,117,0,0,687,688,5,112,0,0,688,689,
        5,112,0,0,689,690,5,111,0,0,690,691,5,114,0,0,691,692,5,116,0,0,
        692,693,5,95,0,0,693,694,5,103,0,0,694,695,5,122,0,0,695,696,5,105,
        0,0,696,697,5,112,0,0,697,698,5,112,0,0,698,699,5,101,0,0,699,700,
        5,100,0,0,700,701,5,95,0,0,701,702,5,108,0,0,702,703,5,111,0,0,703,
        704,5,97,0,0,704,705,5,100,0,0,705,706,5,101,0,0,706,707,5,114,0,
        0,707,818,5,115,0,0,708,709,5,116,0,0,709,710,5,101,0,0,710,711,
        5,120,0,0,711,712,5,116,0,0,712,713,5,109,0,0,713,714,5,111,0,0,
        714,715,5,100,0,0,715,818,5,101,0,0,716,717,5,116,0,0,717,718,5,
        101,0,0,718,719,5,120,0,0,719,720,5,116,0,0,720,721,5,111,0,0,721,
        722,5,110,0,0,722,723,5,108,0,0,723,818,5,121,0,0,724,725,5,116,
        0,0,725,726,5,105,0,0,726,727,5,109,0,0,727,728,5,101,0,0,728,729,
        5,111,0,0,729,730,5,117,0,0,730,818,5,116,0,0,731,732,5,117,0,0,
        732,733,5,101,0,0,733,734,5,102,0,0,734,735,5,105,0,0,735,736,5,
        95,0,0,736,737,5,100,0,0,737,738,5,101,0,0,738,739,5,101,0,0,739,
        740,5,112,0,0,740,741,5,95,0,0,741,742,5,108,0,0,742,743,5,101,0,
        0,743,744,5,103,0,0,744,745,5,97,0,0,745,746,5,99,0,0,746,747,5,
        121,0,0,747,748,5,95,0,0,748,749,5,115,0,0,749,750,5,99,0,0,750,
        751,5,97,0,0,751,818,5,110,0,0,752,753,5,117,0,0,753,754,5,115,0,
        0,754,755,5,101,0,0,755,756,5,95,0,0,756,757,5,103,0,0,757,758,5,
        114,0,0,758,759,5,97,0,0,759,760,5,112,0,0,760,761,5,104,0,0,761,
        762,5,105,0,0,762,763,5,99,0,0,763,764,5,115,0,0,764,765,5,95,0,
        0,765,766,5,102,0,0,766,767,5,111,0,0,767,818,5,114,0,0,768,769,
        5,117,0,0,769,770,5,115,0,0,770,771,5,101,0,0,771,772,5,95,0,0,772,
        773,5,110,0,0,773,774,5,118,0,0,774,775,5,114,0,0,775,776,5,97,0,
        0,776,818,5,109,0,0,777,778,5,119,0,0,778,779,5,105,0,0,779,780,
        5,110,0,0,780,781,5,100,0,0,781,782,5,111,0,0,782,783,5,119,0,0,
        783,784,5,115,0,0,784,785,5,95,0,0,785,786,5,114,0,0,786,787,5,101,
        0,0,787,788,5,99,0,0,788,789,5,111,0,0,789,790,5,118,0,0,790,791,
        5,101,0,0,791,792,5,114,0,0,792,793,5,121,0,0,793,794,5,95,0,0,794,
        795,5,102,0,0,795,796,5,105,0,0,796,797,5,108,0,0,797,798,5,101,
        0,0,798,818,5,115,0,0,799,800,5,119,0,0,800,801,5,114,0,0,801,802,
        5,105,0,0,802,803,5,116,0,0,803,804,5,101,0,0,804,805,5,95,0,0,805,
        806,5,115,0,0,806,807,5,121,0,0,807,808,5,115,0,0,808,809,5,116,
        0,0,809,810,5,101,0,0,810,811,5,109,0,0,811,812,5,100,0,0,812,813,
        5,95,0,0,813,814,5,118,0,0,814,815,5,97,0,0,815,816,5,114,0,0,816,
        818,5,115,0,0,817,93,1,0,0,0,817,107,1,0,0,0,817,122,1,0,0,0,817,
        128,1,0,0,0,817,140,1,0,0,0,817,153,1,0,0,0,817,163,1,0,0,0,817,
        180,1,0,0,0,817,195,1,0,0,0,817,211,1,0,0,0,817,230,1,0,0,0,817,
        246,1,0,0,0,817,264,1,0,0,0,817,278,1,0,0,0,817,293,1,0,0,0,817,
        311,1,0,0,0,817,326,1,0,0,0,817,343,1,0,0,0,817,362,1,0,0,0,817,
        374,1,0,0,0,817,386,1,0,0,0,817,414,1,0,0,0,817,432,1,0,0,0,817,
        447,1,0,0,0,817,451,1,0,0,0,817,457,1,0,0,0,817,466,1,0,0,0,817,
        480,1,0,0,0,817,489,1,0,0,0,817,497,1,0,0,0,817,507,1,0,0,0,817,
        518,1,0,0,0,817,528,1,0,0,0,817,550,1,0,0,0,817,560,1,0,0,0,817,
        576,1,0,0,0,817,583,1,0,0,0,817,594,1,0,0,0,817,607,1,0,0,0,817,
        622,1,0,0,0,817,631,1,0,0,0,817,653,1,0,0,0,817,668,1,0,0,0,817,
        685,1,0,0,0,817,708,1,0,0,0,817,716,1,0,0,0,817,724,1,0,0,0,817,
        731,1,0,0,0,817,752,1,0,0,0,817,768,1,0,0,0,817,777,1,0,0,0,817,
        799,1,0,0,0,818,822,1,0,0,0,819,821,8,1,0,0,820,819,1,0,0,0,821,
        824,1,0,0,0,822,820,1,0,0,0,822,823,1,0,0,0,823,826,1,0,0,0,824,
        822,1,0,0,0,825,827,3,4,1,0,826,825,1,0,0,0,826,827,1,0,0,0,827,
        828,1,0,0,0,828,829,6,4,0,0,829,11,1,0,0,0,830,833,3,14,6,0,831,
        833,3,16,7,0,832,830,1,0,0,0,832,831,1,0,0,0,833,13,1,0,0,0,834,
        835,5,109,0,0,835,836,5,101,0,0,836,837,5,110,0,0,837,838,5,117,
        0,0,838,839,5,101,0,0,839,840,5,110,0,0,840,841,5,116,0,0,841,842,
        5,114,0,0,842,843,5,121,0,0,843,15,1,0,0,0,844,845,5,115,0,0,845,
        846,5,117,0,0,846,847,5,98,0,0,847,848,5,109,0,0,848,849,5,101,0,
        0,849,850,5,110,0,0,850,851,5,117,0,0,851,852,5,101,0,0,852,853,
        5,110,0,0,853,854,5,116,0,0,854,855,5,114,0,0,855,856,5,121,0,0,
        856,17,1,0,0,0,857,858,5,118,0,0,858,859,5,111,0,0,859,860,5,108,
        0,0,860,861,5,117,0,0,861,862,5,109,0,0,862,863,5,101,0,0,863,19,
        1,0,0,0,864,865,5,108,0,0,865,866,5,111,0,0,866,867,5,97,0,0,867,
        868,5,100,0,0,868,869,5,101,0,0,869,870,5,114,0,0,870,21,1,0,0,0,
        871,872,5,105,0,0,872,873,5,110,0,0,873,874,5,105,0,0,874,875,5,
        116,0,0,875,876,5,114,0,0,876,877,5,100,0,0,877,23,1,0,0,0,878,879,
        5,105,0,0,879,880,5,99,0,0,880,881,5,111,0,0,881,882,5,110,0,0,882,
        25,1,0,0,0,883,884,5,111,0,0,884,885,5,115,0,0,885,886,5,116,0,0,
        886,887,5,121,0,0,887,888,5,112,0,0,888,889,5,101,0,0,889,890,1,
        0,0,0,890,891,3,2,0,0,891,892,1,0,0,0,892,893,6,12,1,0,893,27,1,
        0,0,0,894,895,5,103,0,0,895,896,5,114,0,0,896,897,5,97,0,0,897,898,
        5,112,0,0,898,899,5,104,0,0,899,900,5,105,0,0,900,901,5,99,0,0,901,
        902,5,115,0,0,902,903,1,0,0,0,903,904,3,2,0,0,904,905,1,0,0,0,905,
        906,6,13,1,0,906,29,1,0,0,0,907,908,5,111,0,0,908,909,5,112,0,0,
        909,910,5,116,0,0,910,911,5,105,0,0,911,912,5,111,0,0,912,913,5,
        110,0,0,913,914,5,115,0,0,914,31,1,0,0,0,915,916,5,97,0,0,916,917,
        5,100,0,0,917,918,5,100,0,0,918,919,5,95,0,0,919,920,5,111,0,0,920,
        921,5,112,0,0,921,922,5,116,0,0,922,923,5,105,0,0,923,924,5,111,
        0,0,924,925,5,110,0,0,925,926,5,115,0,0,926,33,1,0,0,0,927,928,5,
        102,0,0,928,929,5,105,0,0,929,930,5,114,0,0,930,931,5,109,0,0,931,
        932,5,119,0,0,932,933,5,97,0,0,933,934,5,114,0,0,934,935,5,101,0,
        0,935,936,5,95,0,0,936,937,5,98,0,0,937,938,5,111,0,0,938,939,5,
        111,0,0,939,940,5,116,0,0,940,941,5,110,0,0,941,942,5,117,0,0,942,
        943,5,109,0,0,943,35,1,0,0,0,944,945,5,100,0,0,945,946,5,105,0,0,
        946,947,5,115,0,0,947,948,5,97,0,0,948,949,5,98,0,0,949,950,5,108,
        0,0,950,951,5,101,0,0,951,952,5,100,0,0,952,37,1,0,0,0,953,954,5,
        105,0,0,954,955,5,110,0,0,955,956,5,99,0,0,956,957,5,108,0,0,957,
        958,5,117,0,0,958,959,5,100,0,0,959,960,5,101,0,0,960,39,1,0,0,0,
        961,962,5,123,0,0,962,41,1,0,0,0,963,964,5,125,0,0,964,43,1,0,0,
        0,965,967,3,46,22,0,966,965,1,0,0,0,967,968,1,0,0,0,968,966,1,0,
        0,0,968,969,1,0,0,0,969,45,1,0,0,0,970,971,7,2,0,0,971,47,1,0,0,
        0,972,976,3,50,24,0,973,976,3,52,25,0,974,976,3,54,26,0,975,972,
        1,0,0,0,975,973,1,0,0,0,975,974,1,0,0,0,976,49,1,0,0,0,977,979,5,
        39,0,0,978,980,8,1,0,0,979,978,1,0,0,0,980,981,1,0,0,0,981,979,1,
        0,0,0,981,982,1,0,0,0,982,983,1,0,0,0,983,984,5,39,0,0,984,51,1,
        0,0,0,985,987,5,34,0,0,986,988,8,1,0,0,987,986,1,0,0,0,988,989,1,
        0,0,0,989,987,1,0,0,0,989,990,1,0,0,0,990,991,1,0,0,0,991,992,5,
        34,0,0,992,53,1,0,0,0,993,995,8,3,0,0,994,993,1,0,0,0,995,996,1,
        0,0,0,996,994,1,0,0,0,996,997,1,0,0,0,997,55,1,0,0,0,998,999,5,77,
        0,0,999,1000,5,97,0,0,1000,1001,5,99,0,0,1001,1002,5,79,0,0,1002,
        1024,5,83,0,0,1003,1004,5,76,0,0,1004,1005,5,105,0,0,1005,1006,5,
        110,0,0,1006,1007,5,117,0,0,1007,1024,5,120,0,0,1008,1009,5,69,0,
        0,1009,1010,5,76,0,0,1010,1011,5,73,0,0,1011,1012,5,76,0,0,1012,
        1024,5,79,0,0,1013,1014,5,87,0,0,1014,1015,5,105,0,0,1015,1016,5,
        110,0,0,1016,1017,5,100,0,0,1017,1018,5,111,0,0,1018,1019,5,119,
        0,0,1019,1024,5,115,0,0,1020,1021,5,88,0,0,1021,1022,5,79,0,0,1022,
        1024,5,77,0,0,1023,998,1,0,0,0,1023,1003,1,0,0,0,1023,1008,1,0,0,
        0,1023,1013,1,0,0,0,1023,1020,1,0,0,0,1024,1025,1,0,0,0,1025,1026,
        6,27,2,0,1026,57,1,0,0,0,1027,1028,5,111,0,0,1028,1033,5,110,0,0,
        1029,1030,5,111,0,0,1030,1031,5,102,0,0,1031,1033,5,102,0,0,1032,
        1027,1,0,0,0,1032,1029,1,0,0,0,1033,1034,1,0,0,0,1034,1035,6,28,
        2,0,1035,59,1,0,0,0,18,0,1,63,68,75,85,89,817,822,826,832,968,975,
        981,989,996,1023,1032,3,6,0,0,5,1,0,4,0,0
    ]

class RefindConfigLexer(Lexer):

    atn = ATNDeserializer().deserialize(serializedATN())

    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]

    STRICT_PARAMETER_MODE = 1

    WHITESPACE = 1
    NEWLINE = 2
    EMPTY = 3
    COMMENT = 4
    IGNORED_OPTION = 5
    MENU_ENTRY = 6
    VOLUME = 7
    LOADER = 8
    INITRD = 9
    ICON = 10
    OS_TYPE = 11
    GRAPHICS = 12
    BOOT_OPTIONS = 13
    ADD_BOOT_OPTIONS = 14
    FIRMWARE_BOOTNUM = 15
    DISABLED = 16
    INCLUDE = 17
    OPEN_BRACE = 18
    CLOSE_BRACE = 19
    HEX_INTEGER = 20
    STRING = 21
    OS_TYPE_PARAMETER = 22
    GRAPHICS_PARAMETER = 23

    channelNames = [ u"DEFAULT_TOKEN_CHANNEL", u"HIDDEN" ]

    modeNames = [ "DEFAULT_MODE", "STRICT_PARAMETER_MODE" ]

    literalNames = [ "<INVALID>",
            "'volume'", "'loader'", "'initrd'", "'icon'", "'options'", "'add_options'", 
            "'firmware_bootnum'", "'disabled'", "'include'", "'{'", "'}'" ]

    symbolicNames = [ "<INVALID>",
            "WHITESPACE", "NEWLINE", "EMPTY", "COMMENT", "IGNORED_OPTION", 
            "MENU_ENTRY", "VOLUME", "LOADER", "INITRD", "ICON", "OS_TYPE", 
            "GRAPHICS", "BOOT_OPTIONS", "ADD_BOOT_OPTIONS", "FIRMWARE_BOOTNUM", 
            "DISABLED", "INCLUDE", "OPEN_BRACE", "CLOSE_BRACE", "HEX_INTEGER", 
            "STRING", "OS_TYPE_PARAMETER", "GRAPHICS_PARAMETER" ]

    ruleNames = [ "WHITESPACE", "NEWLINE", "EMPTY", "COMMENT", "IGNORED_OPTION", 
                  "MENU_ENTRY", "MAIN_MENU_ENTRY", "SUB_MENU_ENTRY", "VOLUME", 
                  "LOADER", "INITRD", "ICON", "OS_TYPE", "GRAPHICS", "BOOT_OPTIONS", 
                  "ADD_BOOT_OPTIONS", "FIRMWARE_BOOTNUM", "DISABLED", "INCLUDE", 
                  "OPEN_BRACE", "CLOSE_BRACE", "HEX_INTEGER", "HEX_DIGIT", 
                  "STRING", "SINGLE_QUOTED_STRING", "DOUBLE_QUOTED_STRING", 
                  "UNQUOTED_STRING", "OS_TYPE_PARAMETER", "GRAPHICS_PARAMETER" ]

    grammarFileName = "RefindConfigLexer.g4"

    def __init__(self, input=None, output:TextIO = sys.stdout):
        super().__init__(input, output)
        self.checkVersion("4.13.1")
        self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
        self._actions = None
        self._predicates = None




================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigLexer.tokens
================================================
WHITESPACE=1
NEWLINE=2
EMPTY=3
COMMENT=4
IGNORED_OPTION=5
MENU_ENTRY=6
VOLUME=7
LOADER=8
INITRD=9
ICON=10
OS_TYPE=11
GRAPHICS=12
BOOT_OPTIONS=13
ADD_BOOT_OPTIONS=14
FIRMWARE_BOOTNUM=15
DISABLED=16
INCLUDE=17
OPEN_BRACE=18
CLOSE_BRACE=19
HEX_INTEGER=20
STRING=21
OS_TYPE_PARAMETER=22
GRAPHICS_PARAMETER=23
'volume'=7
'loader'=8
'initrd'=9
'icon'=10
'options'=13
'add_options'=14
'firmware_bootnum'=15
'disabled'=16
'include'=17
'{'=18
'}'=19


================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigParser.g4
================================================
/*
SPDX-FileCopyrightText: 2020-2024 Luka Žaja <luka.zaja@protonmail.com>

SPDX-License-Identifier: GPL-3.0-or-later

refind-btrfs - Generate rEFInd manual boot stanzas from Btrfs snapshots
Copyright (C) 2020-2024 Luka Žaja

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

parser grammar RefindConfigParser;

options { tokenVocab=RefindConfigLexer; }

refind : config_option* EOF ;

config_option
    : boot_stanza
    | include
    ;

// "menuentry" section
boot_stanza : menu_entry OPEN_BRACE main_option+ CLOSE_BRACE ;

menu_entry : MENU_ENTRY STRING ;
main_option
    : volume
    | loader
    | main_initrd
    | icon
    | os_type
    | graphics
    | main_boot_options
    | firmware_bootnum
    | disabled
    | sub_menu
    ;

volume : VOLUME STRING ;
loader : LOADER STRING ;
main_initrd : INITRD STRING ;
icon : ICON STRING ;
os_type : OS_TYPE OS_TYPE_PARAMETER ;
graphics : GRAPHICS GRAPHICS_PARAMETER ;
main_boot_options : BOOT_OPTIONS STRING ;
firmware_bootnum: FIRMWARE_BOOTNUM HEX_INTEGER ;
disabled : DISABLED;

// "submenuentry" section
sub_menu : menu_entry OPEN_BRACE sub_option+ CLOSE_BRACE ;

sub_option
    : loader
    | sub_initrd
    | graphics
    | sub_boot_options
    | add_boot_options
    | disabled
    ;

sub_initrd : INITRD STRING? ;
sub_boot_options : BOOT_OPTIONS STRING? ;
add_boot_options : ADD_BOOT_OPTIONS STRING ;

// "include" section
include : INCLUDE STRING ;


================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigParser.interp
================================================
token literal names:
null
null
null
null
null
null
null
'volume'
'loader'
'initrd'
'icon'
null
null
'options'
'add_options'
'firmware_bootnum'
'disabled'
'include'
'{'
'}'
null
null
null
null

token symbolic names:
null
WHITESPACE
NEWLINE
EMPTY
COMMENT
IGNORED_OPTION
MENU_ENTRY
VOLUME
LOADER
INITRD
ICON
OS_TYPE
GRAPHICS
BOOT_OPTIONS
ADD_BOOT_OPTIONS
FIRMWARE_BOOTNUM
DISABLED
INCLUDE
OPEN_BRACE
CLOSE_BRACE
HEX_INTEGER
STRING
OS_TYPE_PARAMETER
GRAPHICS_PARAMETER

rule names:
refind
config_option
boot_stanza
menu_entry
main_option
volume
loader
main_initrd
icon
os_type
graphics
main_boot_options
firmware_bootnum
disabled
sub_menu
sub_option
sub_initrd
sub_boot_options
add_boot_options
include


atn:
[4, 1, 23, 134, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 1, 0, 5, 0, 42, 8, 0, 10, 0, 12, 0, 45, 9, 0, 1, 0, 1, 0, 1, 1, 1, 1, 3, 1, 51, 8, 1, 1, 2, 1, 2, 1, 2, 4, 2, 56, 8, 2, 11, 2, 12, 2, 57, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 3, 4, 75, 8, 4, 1, 5, 1, 5, 1, 5, 1, 6, 1, 6, 1, 6, 1, 7, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 9, 1, 10, 1, 10, 1, 10, 1, 11, 1, 11, 1, 11, 1, 12, 1, 12, 1, 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 4, 14, 106, 8, 14, 11, 14, 12, 14, 107, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 1, 15, 1, 15, 1, 15, 3, 15, 118, 8, 15, 1, 16, 1, 16, 3, 16, 122, 8, 16, 1, 17, 1, 17, 3, 17, 126, 8, 17, 1, 18, 1, 18, 1, 18, 1, 19, 1, 19, 1, 19, 1, 19, 0, 0, 20, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 0, 0, 133, 0, 43, 1, 0, 0, 0, 2, 50, 1, 0, 0, 0, 4, 52, 1, 0, 0, 0, 6, 61, 1, 0, 0, 0, 8, 74, 1, 0, 0, 0, 10, 76, 1, 0, 0, 0, 12, 79, 1, 0, 0, 0, 14, 82, 1, 0, 0, 0, 16, 85, 1, 0, 0, 0, 18, 88, 1, 0, 0, 0, 20, 91, 1, 0, 0, 0, 22, 94, 1, 0, 0, 0, 24, 97, 1, 0, 0, 0, 26, 100, 1, 0, 0, 0, 28, 102, 1, 0, 0, 0, 30, 117, 1, 0, 0, 0, 32, 119, 1, 0, 0, 0, 34, 123, 1, 0, 0, 0, 36, 127, 1, 0, 0, 0, 38, 130, 1, 0, 0, 0, 40, 42, 3, 2, 1, 0, 41, 40, 1, 0, 0, 0, 42, 45, 1, 0, 0, 0, 43, 41, 1, 0, 0, 0, 43, 44, 1, 0, 0, 0, 44, 46, 1, 0, 0, 0, 45, 43, 1, 0, 0, 0, 46, 47, 5, 0, 0, 1, 47, 1, 1, 0, 0, 0, 48, 51, 3, 4, 2, 0, 49, 51, 3, 38, 19, 0, 50, 48, 1, 0, 0, 0, 50, 49, 1, 0, 0, 0, 51, 3, 1, 0, 0, 0, 52, 53, 3, 6, 3, 0, 53, 55, 5, 18, 0, 0, 54, 56, 3, 8, 4, 0, 55, 54, 1, 0, 0, 0, 56, 57, 1, 0, 0, 0, 57, 55, 1, 0, 0, 0, 57, 58, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 60, 5, 19, 0, 0, 60, 5, 1, 0, 0, 0, 61, 62, 5, 6, 0, 0, 62, 63, 5, 21, 0, 0, 63, 7, 1, 0, 0, 0, 64, 75, 3, 10, 5, 0, 65, 75, 3, 12, 6, 0, 66, 75, 3, 14, 7, 0, 67, 75, 3, 16, 8, 0, 68, 75, 3, 18, 9, 0, 69, 75, 3, 20, 10, 0, 70, 75, 3, 22, 11, 0, 71, 75, 3, 24, 12, 0, 72, 75, 3, 26, 13, 0, 73, 75, 3, 28, 14, 0, 74, 64, 1, 0, 0, 0, 74, 65, 1, 0, 0, 0, 74, 66, 1, 0, 0, 0, 74, 67, 1, 0, 0, 0, 74, 68, 1, 0, 0, 0, 74, 69, 1, 0, 0, 0, 74, 70, 1, 0, 0, 0, 74, 71, 1, 0, 0, 0, 74, 72, 1, 0, 0, 0, 74, 73, 1, 0, 0, 0, 75, 9, 1, 0, 0, 0, 76, 77, 5, 7, 0, 0, 77, 78, 5, 21, 0, 0, 78, 11, 1, 0, 0, 0, 79, 80, 5, 8, 0, 0, 80, 81, 5, 21, 0, 0, 81, 13, 1, 0, 0, 0, 82, 83, 5, 9, 0, 0, 83, 84, 5, 21, 0, 0, 84, 15, 1, 0, 0, 0, 85, 86, 5, 10, 0, 0, 86, 87, 5, 21, 0, 0, 87, 17, 1, 0, 0, 0, 88, 89, 5, 11, 0, 0, 89, 90, 5, 22, 0, 0, 90, 19, 1, 0, 0, 0, 91, 92, 5, 12, 0, 0, 92, 93, 5, 23, 0, 0, 93, 21, 1, 0, 0, 0, 94, 95, 5, 13, 0, 0, 95, 96, 5, 21, 0, 0, 96, 23, 1, 0, 0, 0, 97, 98, 5, 15, 0, 0, 98, 99, 5, 20, 0, 0, 99, 25, 1, 0, 0, 0, 100, 101, 5, 16, 0, 0, 101, 27, 1, 0, 0, 0, 102, 103, 3, 6, 3, 0, 103, 105, 5, 18, 0, 0, 104, 106, 3, 30, 15, 0, 105, 104, 1, 0, 0, 0, 106, 107, 1, 0, 0, 0, 107, 105, 1, 0, 0, 0, 107, 108, 1, 0, 0, 0, 108, 109, 1, 0, 0, 0, 109, 110, 5, 19, 0, 0, 110, 29, 1, 0, 0, 0, 111, 118, 3, 12, 6, 0, 112, 118, 3, 32, 16, 0, 113, 118, 3, 20, 10, 0, 114, 118, 3, 34, 17, 0, 115, 118, 3, 36, 18, 0, 116, 118, 3, 26, 13, 0, 117, 111, 1, 0, 0, 0, 117, 112, 1, 0, 0, 0, 117, 113, 1, 0, 0, 0, 117, 114, 1, 0, 0, 0, 117, 115, 1, 0, 0, 0, 117, 116, 1, 0, 0, 0, 118, 31, 1, 0, 0, 0, 119, 121, 5, 9, 0, 0, 120, 122, 5, 21, 0, 0, 121, 120, 1, 0, 0, 0, 121, 122, 1, 0, 0, 0, 122, 33, 1, 0, 0, 0, 123, 125, 5, 13, 0, 0, 124, 126, 5, 21, 0, 0, 125, 124, 1, 0, 0, 0, 125, 126, 1, 0, 0, 0, 126, 35, 1, 0, 0, 0, 127, 128, 5, 14, 0, 0, 128, 129, 5, 21, 0, 0, 129, 37, 1, 0, 0, 0, 130, 131, 5, 17, 0, 0, 131, 132, 5, 21, 0, 0, 132, 39, 1, 0, 0, 0, 8, 43, 50, 57, 74, 107, 117, 121, 125]

================================================
FILE: src/refind_btrfs/boot/antlr4/RefindConfigParser.py
================================================
# Generated from c:/Users/Luka/Projects/Python/refind-btrfs/src/refind_btrfs/boot/antlr4/RefindConfigParser.g4 by ANTLR 4.13.1
# encoding: utf-8
from antlr4 import *
from io import StringIO
import sys
if sys.version_info[1] > 5:
	from typing import TextIO
else:
	from typing.io import TextIO

def serializedATN():
    return [
        4,1,23,134,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,2,6,7,
        6,2,7,7,7,2,8,7,8,2,9,7,9,2,10,7,10,2,11,7,11,2,12,7,12,2,13,7,13,
        2,14,7,14,2,15,7,15,2,16,7,16,2,17,7,17,2,18,7,18,2,19,7,19,1,0,
        5,0,42,8,0,10,0,12,0,45,9,0,1,0,1,0,1,1,1,1,3,1,51,8,1,1,2,1,2,1,
        2,4,2,56,8,2,11,2,12,2,57,1,2,1,2,1,3,1,3,1,3,1,4,1,4,1,4,1,4,1,
        4,1,4,1,4,1,4,1,4,1,4,3,4,75,8,4,1,5,1,5,1,5,1,6,1,6,1,6,1,7,1,7,
        1,7,1,8,1,8,1,8,1,9,1,9,1,9,1,10,1,10,1,10,1,11,1,11,1,11,1,12,1,
        12,1,12,1,13,1,13,1,14,1,14,1,14,4,14,106,8,14,11,14,12,14,107,1,
        14,1,14,1,15,1,15,1,15,1,15,1,15,1,15,3,15,118,8,15,1,16,1,16,3,
        16,122,8,16,1,17,1,17,3,17,126,8,17,1,18,1,18,1,18,1,19,1,19,1,19,
        1,19,0,0,20,0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,
        38,0,0,133,0,43,1,0,0,0,2,50,1,0,0,0,4,52,1,0,0,0,6,61,1,0,0,0,8,
        74,1,0,0,0,10,76,1,0,0,0,12,79,1,0,0,0,14,82,1,0,0,0,16,85,1,0,0,
        0,18,88,1,0,0,0,20,91,1,0,0,0,22,94,1,0,0,0,24,97,1,0,0,0,26,100,
        1,0,0,0,28,102,1,0,0,0,30,117,1,0,0,0,32,119,1,0,0,0,34,123,1,0,
        0,0,36,127,1,0,0,0,38,130,1,0,0,0,40,42,3,2,1,0,41,40,1,0,0,0,42,
        45,1,0,0,0,43,41,1,0,0,0,43,44,1,0,0,0,44,46,1,0,0,0,45,43,1,0,0,
        0,46,47,5,0,0,1,47,1,1,0,0,0,48,51,3,4,2,0,49,51,3,38,19,0,50,48,
        1,0,0,0,50,49,1,0,0,0,51,3,1,0,0,0,52,53,3,6,3,0,53,55,5,18,0,0,
        54,56,3,8,4,0,55,54,1,0,0,0,56,57,1,0,0,0,57,55,1,0,0,0,57,58,1,
        0,0,0,58,59,1,0,0,0,59,60,5,19,0,0,60,5,1,0,0,0,61,62,5,6,0,0,62,
        63,5,21,0,0,63,7,1,0,0,0,64,75,3,10,5,0,65,75,3,12,6,0,66,75,3,14,
        7,0,67,75,3,16,8,0,68,75,3,18,9,0,69,75,3,20,10,0,70,75,3,22,11,
        0,71,75,3,24,12,0,72,75,3,26,13,0,73,75,3,28,14,0,74,64,1,0,0,0,
        74,65,1,0,0,0,74,66,1,0,0,0,74,67,1,0,0,0,74,68,1,0,0,0,74,69,1,
        0,0,0,74,70,1,0,0,0,74,71,1,0,0,0,74,72,1,0,0,0,74,73,1,0,0,0,75,
        9,1,0,0,0,76,77,5,7,0,0,77,78,5,21,0,0,78,11,1,0,0,0,79,80,5,8,0,
        0,80,81,5,21,0,0,81,13,1,0,0,0,82,83,5,9,0,0,83,84,5,21,0,0,84,15,
        1,0,0,0,85,86,5,10,0,0,86,87,5,21,0,0,87,17,1,0,0,0,88,89,5,11,0,
        0,89,90,5,22,0,0,90,19,1,0,0,0,91,92,5,12,0,0,92,93,5,23,0,0,93,
        21,1,0,0,0,94,95,5,13,0,0,95,96,5,21,0,0,96,23,1,0,0,0,97,98,5,15,
        0,0,98,99,5,20,0,0,99,25,1,0,0,0,100,101,5,16,0,0,101,27,1,0,0,0,
        102,103,3,6,3,0,103,105,5,18,0,0,104,106,3,30,15,0,105,104,1,0,0,
        0,106,107,1,0,0,0,107,105,1,0,0,0,107,108,1,0,0,0,108,109,1,0,0,
        0,109,110,5,19,0,0,110,29,1,0,0,0,111,118,3,12,6,0,112,118,3,32,
        16,0,113,118,3,20,10,0,114,118,3,34,17,0,115,118,3,36,18,0,116,118,
        3,26,13,0,117,111,1,0,0,0,117,112,1,0,0,0,117,113,1,0,0,0,117,114,
        1,0,0,0,117,115,1,0,0,0,117,116,1,0,0,0,118,31,1,0,0,0,119,121,5,
        9,0,0,120,122,5,21,0,0,121,120,1,0,0,0,121,122,1,0,0,0,122,33,1,
        0,0,0,123,125,5,13,0,0,124,126,5,21,0,0,125,124,1,0,0,0,125,126,
        1,0,0,0,126,35,1,0,0,0,127,128,5,14,0,0,128,129,5,21,0,0,129,37,
        1,0,0,0,130,131,5,17,0,0,131,132,5,21,0,0,132,39,1,0,0,0,8,43,50,
        57,74,107,117,121,125
    ]

class RefindConfigParser ( Parser ):

    grammarFileName = "RefindConfigParser.g4"

    atn = ATNDeserializer().deserialize(serializedATN())

    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]

    sharedContextCache = PredictionContextCache()

    literalNames = [ "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                     "<INVALID>", "<INVALID>", "<INVALID>", "'volume'", 
                     "'loader'", "'initrd'", "'icon'", "<INVALID>", "<INVALID>", 
                     "'options'", "'add_options'", "'firmware_bootnum'", 
                     "'disabled'", "'include'", "'{'", "'}'" ]

    symbolicNames = [ "<INVALID>", "WHITESPACE", "NEWLINE", "EMPTY", "COMMENT", 
                      "IGNORED_OPTION", "MENU_ENTRY", "VOLUME", "LOADER", 
                      "INITRD", "ICON", "OS_TYPE", "GRAPHICS", "BOOT_OPTIONS", 
                      "ADD_BOOT_OPTIONS", "FIRMWARE_BOOTNUM", "DISABLED", 
                      "INCLUDE", "OPEN_BRACE", "CLOSE_BRACE", "HEX_INTEGER", 
                      "STRING", "OS_TYPE_PARAMETER", "GRAPHICS_PARAMETER" ]

    RULE_refind = 0
    RULE_config_option = 1
    RULE_boot_stanza = 2
    RULE_menu_entry = 3
    RULE_main_option = 4
    RULE_volume = 5
    RULE_loader = 6
    RULE_main_initrd = 7
    RULE_icon = 8
    RULE_os_type = 9
    RULE_graphics = 10
    RULE_main_boot_options = 11
    RULE_firmware_bootnum = 12
    RULE_disabled = 13
    RULE_sub_menu = 14
    RULE_sub_option = 15
    RULE_sub_initrd = 16
    RULE_sub_boot_options = 17
    RULE_add_boot_options = 18
    RULE_include = 19

    ruleNames =  [ "refind", "config_option", "boot_stanza", "menu_entry", 
                   "main_option", "volume", "loader", "main_initrd", "icon", 
                   "os_type", "graphics", "main_boot_options", "firmware_bootnum", 
                   "disabled", "sub_menu", "sub_option", "sub_initrd", "sub_boot_options", 
                   "add_boot_options", "include" ]

    EOF = Token.EOF
    WHITESPACE=1
    NEWLINE=2
    EMPTY=3
    COMMENT=4
    IGNORED_OPTION=5
    MENU_ENTRY=6
    VOLUME=7
    LOADER=8
    INITRD=9
    ICON=10
    OS_TYPE=11
    GRAPHICS=12
    BOOT_OPTIONS=13
    ADD_BOOT_OPTIONS=14
    FIRMWARE_BOOTNUM=15
    DISABLED=16
    INCLUDE=17
    OPEN_BRACE=18
    CLOSE_BRACE=19
    HEX_INTEGER=20
    STRING=21
    OS_TYPE_PARAMETER=22
    GRAPHICS_PARAMETER=23

    def __init__(self, input:TokenStream, output:TextIO = sys.stdout):
        super().__init__(input, output)
        self.checkVersion("4.13.1")
        self._interp = ParserATNSimulator(self, self.atn, self.decisionsToDFA, self.sharedContextCache)
        self._predicates = None




    class RefindContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def EOF(self):
            return self.getToken(RefindConfigParser.EOF, 0)

        def config_option(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(RefindConfigParser.Config_optionContext)
            else:
                return self.getTypedRuleContext(RefindConfigParser.Config_optionContext,i)


        def getRuleIndex(self):
            return RefindConfigParser.RULE_refind

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitRefind" ):
                return visitor.visitRefind(self)
            else:
                return visitor.visitChildren(self)




    def refind(self):

        localctx = RefindConfigParser.RefindContext(self, self._ctx, self.state)
        self.enterRule(localctx, 0, self.RULE_refind)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 43
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while _la==6 or _la==17:
                self.state = 40
                self.config_option()
                self.state = 45
                self._errHandler.sync(self)
                _la = self._input.LA(1)

            self.state = 46
            self.match(RefindConfigParser.EOF)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Config_optionContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def boot_stanza(self):
            return self.getTypedRuleContext(RefindConfigParser.Boot_stanzaContext,0)


        def include(self):
            return self.getTypedRuleContext(RefindConfigParser.IncludeContext,0)


        def getRuleIndex(self):
            return RefindConfigParser.RULE_config_option

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitConfig_option" ):
                return visitor.visitConfig_option(self)
            else:
                return visitor.visitChildren(self)




    def config_option(self):

        localctx = RefindConfigParser.Config_optionContext(self, self._ctx, self.state)
        self.enterRule(localctx, 2, self.RULE_config_option)
        try:
            self.state = 50
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [6]:
                self.enterOuterAlt(localctx, 1)
                self.state = 48
                self.boot_stanza()
                pass
            elif token in [17]:
                self.enterOuterAlt(localctx, 2)
                self.state = 49
                self.include()
                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Boot_stanzaContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def menu_entry(self):
            return self.getTypedRuleContext(RefindConfigParser.Menu_entryContext,0)


        def OPEN_BRACE(self):
            return self.getToken(RefindConfigParser.OPEN_BRACE, 0)

        def CLOSE_BRACE(self):
            return self.getToken(RefindConfigParser.CLOSE_BRACE, 0)

        def main_option(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(RefindConfigParser.Main_optionContext)
            else:
                return self.getTypedRuleContext(RefindConfigParser.Main_optionContext,i)


        def getRuleIndex(self):
            return RefindConfigParser.RULE_boot_stanza

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitBoot_stanza" ):
                return visitor.visitBoot_stanza(self)
            else:
                return visitor.visitChildren(self)




    def boot_stanza(self):

        localctx = RefindConfigParser.Boot_stanzaContext(self, self._ctx, self.state)
        self.enterRule(localctx, 4, self.RULE_boot_stanza)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 52
            self.menu_entry()
            self.state = 53
            self.match(RefindConfigParser.OPEN_BRACE)
            self.state = 55 
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while True:
                self.state = 54
                self.main_option()
                self.state = 57 
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if not ((((_la) & ~0x3f) == 0 and ((1 << _la) & 114624) != 0)):
                    break

            self.state = 59
            self.match(RefindConfigParser.CLOSE_BRACE)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Menu_entryContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def MENU_ENTRY(self):
            return self.getToken(RefindConfigParser.MENU_ENTRY, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_menu_entry

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitMenu_entry" ):
                return visitor.visitMenu_entry(self)
            else:
                return visitor.visitChildren(self)




    def menu_entry(self):

        localctx = RefindConfigParser.Menu_entryContext(self, self._ctx, self.state)
        self.enterRule(localctx, 6, self.RULE_menu_entry)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 61
            self.match(RefindConfigParser.MENU_ENTRY)
            self.state = 62
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Main_optionContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def volume(self):
            return self.getTypedRuleContext(RefindConfigParser.VolumeContext,0)


        def loader(self):
            return self.getTypedRuleContext(RefindConfigParser.LoaderContext,0)


        def main_initrd(self):
            return self.getTypedRuleContext(RefindConfigParser.Main_initrdContext,0)


        def icon(self):
            return self.getTypedRuleContext(RefindConfigParser.IconContext,0)


        def os_type(self):
            return self.getTypedRuleContext(RefindConfigParser.Os_typeContext,0)


        def graphics(self):
            return self.getTypedRuleContext(RefindConfigParser.GraphicsContext,0)


        def main_boot_options(self):
            return self.getTypedRuleContext(RefindConfigParser.Main_boot_optionsContext,0)


        def firmware_bootnum(self):
            return self.getTypedRuleContext(RefindConfigParser.Firmware_bootnumContext,0)


        def disabled(self):
            return self.getTypedRuleContext(RefindConfigParser.DisabledContext,0)


        def sub_menu(self):
            return self.getTypedRuleContext(RefindConfigParser.Sub_menuContext,0)


        def getRuleIndex(self):
            return RefindConfigParser.RULE_main_option

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitMain_option" ):
                return visitor.visitMain_option(self)
            else:
                return visitor.visitChildren(self)




    def main_option(self):

        localctx = RefindConfigParser.Main_optionContext(self, self._ctx, self.state)
        self.enterRule(localctx, 8, self.RULE_main_option)
        try:
            self.state = 74
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [7]:
                self.enterOuterAlt(localctx, 1)
                self.state = 64
                self.volume()
                pass
            elif token in [8]:
                self.enterOuterAlt(localctx, 2)
                self.state = 65
                self.loader()
                pass
            elif token in [9]:
                self.enterOuterAlt(localctx, 3)
                self.state = 66
                self.main_initrd()
                pass
            elif token in [10]:
                self.enterOuterAlt(localctx, 4)
                self.state = 67
                self.icon()
                pass
            elif token in [11]:
                self.enterOuterAlt(localctx, 5)
                self.state = 68
                self.os_type()
                pass
            elif token in [12]:
                self.enterOuterAlt(localctx, 6)
                self.state = 69
                self.graphics()
                pass
            elif token in [13]:
                self.enterOuterAlt(localctx, 7)
                self.state = 70
                self.main_boot_options()
                pass
            elif token in [15]:
                self.enterOuterAlt(localctx, 8)
                self.state = 71
                self.firmware_bootnum()
                pass
            elif token in [16]:
                self.enterOuterAlt(localctx, 9)
                self.state = 72
                self.disabled()
                pass
            elif token in [6]:
                self.enterOuterAlt(localctx, 10)
                self.state = 73
                self.sub_menu()
                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class VolumeContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def VOLUME(self):
            return self.getToken(RefindConfigParser.VOLUME, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_volume

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitVolume" ):
                return visitor.visitVolume(self)
            else:
                return visitor.visitChildren(self)




    def volume(self):

        localctx = RefindConfigParser.VolumeContext(self, self._ctx, self.state)
        self.enterRule(localctx, 10, self.RULE_volume)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 76
            self.match(RefindConfigParser.VOLUME)
            self.state = 77
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class LoaderContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def LOADER(self):
            return self.getToken(RefindConfigParser.LOADER, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_loader

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitLoader" ):
                return visitor.visitLoader(self)
            else:
                return visitor.visitChildren(self)




    def loader(self):

        localctx = RefindConfigParser.LoaderContext(self, self._ctx, self.state)
        self.enterRule(localctx, 12, self.RULE_loader)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 79
            self.match(RefindConfigParser.LOADER)
            self.state = 80
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Main_initrdContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def INITRD(self):
            return self.getToken(RefindConfigParser.INITRD, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_main_initrd

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitMain_initrd" ):
                return visitor.visitMain_initrd(self)
            else:
                return visitor.visitChildren(self)




    def main_initrd(self):

        localctx = RefindConfigParser.Main_initrdContext(self, self._ctx, self.state)
        self.enterRule(localctx, 14, self.RULE_main_initrd)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 82
            self.match(RefindConfigParser.INITRD)
            self.state = 83
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class IconContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def ICON(self):
            return self.getToken(RefindConfigParser.ICON, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_icon

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitIcon" ):
                return visitor.visitIcon(self)
            else:
                return visitor.visitChildren(self)




    def icon(self):

        localctx = RefindConfigParser.IconContext(self, self._ctx, self.state)
        self.enterRule(localctx, 16, self.RULE_icon)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 85
            self.match(RefindConfigParser.ICON)
            self.state = 86
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Os_typeContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def OS_TYPE(self):
            return self.getToken(RefindConfigParser.OS_TYPE, 0)

        def OS_TYPE_PARAMETER(self):
            return self.getToken(RefindConfigParser.OS_TYPE_PARAMETER, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_os_type

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitOs_type" ):
                return visitor.visitOs_type(self)
            else:
                return visitor.visitChildren(self)




    def os_type(self):

        localctx = RefindConfigParser.Os_typeContext(self, self._ctx, self.state)
        self.enterRule(localctx, 18, self.RULE_os_type)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 88
            self.match(RefindConfigParser.OS_TYPE)
            self.state = 89
            self.match(RefindConfigParser.OS_TYPE_PARAMETER)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class GraphicsContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def GRAPHICS(self):
            return self.getToken(RefindConfigParser.GRAPHICS, 0)

        def GRAPHICS_PARAMETER(self):
            return self.getToken(RefindConfigParser.GRAPHICS_PARAMETER, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_graphics

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitGraphics" ):
                return visitor.visitGraphics(self)
            else:
                return visitor.visitChildren(self)




    def graphics(self):

        localctx = RefindConfigParser.GraphicsContext(self, self._ctx, self.state)
        self.enterRule(localctx, 20, self.RULE_graphics)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 91
            self.match(RefindConfigParser.GRAPHICS)
            self.state = 92
            self.match(RefindConfigParser.GRAPHICS_PARAMETER)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Main_boot_optionsContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def BOOT_OPTIONS(self):
            return self.getToken(RefindConfigParser.BOOT_OPTIONS, 0)

        def STRING(self):
            return self.getToken(RefindConfigParser.STRING, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_main_boot_options

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitMain_boot_options" ):
                return visitor.visitMain_boot_options(self)
            else:
                return visitor.visitChildren(self)




    def main_boot_options(self):

        localctx = RefindConfigParser.Main_boot_optionsContext(self, self._ctx, self.state)
        self.enterRule(localctx, 22, self.RULE_main_boot_options)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 94
            self.match(RefindConfigParser.BOOT_OPTIONS)
            self.state = 95
            self.match(RefindConfigParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class Firmware_bootnumContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def FIRMWARE_BOOTNUM(self):
            return self.getToken(RefindConfigParser.FIRMWARE_BOOTNUM, 0)

        def HEX_INTEGER(self):
            return self.getToken(RefindConfigParser.HEX_INTEGER, 0)

        def getRuleIndex(self):
            return RefindConfigParser.RULE_firmware_bootnum

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitFirmware_bootnum" ):
                return visitor.visitFirmware_bootnum(self)
            else:
                return visitor.visitChildren(self)




    def firmware_bootnum(self):

        localctx = RefindConfigParser.Firmware_bootnumContext(self, self._ctx, self.state)
        self.enterRule(localctx, 24, self.RULE_firmware_bootnum)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 97
            self.match(RefindConfigParser.FIRMWARE_BOOTNUM)
            self.state = 98
            self.match(RefindConfigParser.HEX_INTEGER)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class DisabledContext(ParserRuleContext):
        __slots__ = 'parser'

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser