Full Code of sridharv/gojava for AI

Repository: sridharv/gojava
Branch: master
Commit: 891bb0316909
Files: 9
Total size: 31.6 KB

Directory structure:
gitextract_ls11c7n6/

├── .gitignore
├── .travis.yml
├── LICENSE
├── LoadJNI.java
├── MoreAsserts.java
├── README.md
├── gojava.go
├── gojava_test.go
└── testdata/
    └── SourceDirTest.java

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

================================================
FILE: .gitignore
================================================
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so

# Folders
_obj
_test

# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out

*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*

_testmain.go

*.exe
*.test
*.prof

*.swp

.idea
*.iml

node_modules
out
tutorials
.DS_Store

*.xcuserstate
project.xcworkspace/

.Trashes

*~.nib
DerivedData/
build/

/vendor/

*.pbxuser

# .mode1v3: http://lists.apple.com/archives/xcode-users/2007/Oct/msg00465.html

*.mode1v3

# .mode2v3: http://lists.apple.com/archives/xcode-users/2007/Oct/msg00465.html

*.mode2v3

# .perspectivev3: http://stackoverflow.com/questions/5223297/xcode-projects-what-is-a-perspectivev3-file

*.perspectivev3

#    NB: also, whitelist the default ones, some projects need to use these
!default.pbxuser
!default.mode1v3
!default.mode2v3
!default.perspectivev3


####
# Xcode 4 - semi-personal settings
#
# Apple Shared data that Apple put in the wrong folder
# c.f. http://stackoverflow.com/a/19260712/153422
#     FROM ANSWER: Apple says "don't ignore it"
#     FROM COMMENTS: Apple is wrong; Apple code is too buggy to trust; there are no known negative side-effects to ignoring Apple's unofficial advice and instead doing the thing that actively fixes bugs in Xcode
# Up to you, but ... current advice: ignore it.
*.xccheckout

#
#
# OPTION 1: ---------------------------------
#     throw away ALL personal settings (including custom schemes!
#     - unless they are "shared")
# As per build/ and DerivedData/, this ought to have a trailing slash
#
# NB: this is exclusive with OPTION 2 below
xcuserdata/

# OPTION 2: ---------------------------------
#     get rid of ALL personal settings, but KEEP SOME OF THEM
#     - NB: you must manually uncomment the bits you want to keep
#
# NB: this *requires* git v1.8.2 or above; you may need to upgrade to latest OS X,
#    or manually install git over the top of the OS X version
# NB: this is exclusive with OPTION 1 above
#
#xcuserdata/**/*

#     (requires option 2 above): Personal Schemes
#
#!xcuserdata/**/xcschemes/*

####
# XCode 4 workspaces - more detailed
#
# Workspaces are important! They are a core feature of Xcode - don't exclude them :)
#
# Workspace layout is quite spammy. For reference:
#
# /(root)/
#   /(project-name).xcodeproj/
#     project.pbxproj
#     /project.xcworkspace/
#       contents.xcworkspacedata
#       /xcuserdata/
#         /(your name)/xcuserdatad/
#           UserInterfaceState.xcuserstate
#     /xcshareddata/
#       /xcschemes/
#         (shared scheme name).xcscheme
#     /xcuserdata/
#       /(your name)/xcuserdatad/
#         (private scheme).xcscheme
#         xcschememanagement.plist
#
#

####
# Xcode 4 - Deprecated classes
#
# Allegedly, if you manually "deprecate" your classes, they get moved here.
#
# We're using source-control, so this is a "feature" that we do not want!

*.moved-aside

#
# COCOAPODS:
#
# c.f. http://guides.cocoapods.org/using/using-cocoapods.html#what-is-a-podfilelock
# c.f. http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control

!Podfile.lock

# Android
#
# Built application files
*.apk
*.ap_

# Files for the Dalvik VM
*.dex

# Java class files
*.class

# Generated files
bin/
gen/

# Gradle files
.gradle/
build/

# Local configuration file (sdk path, etc)
local.properties

# Proguard folder generated by Eclipse
proguard/

# Log Files
*.log

# Android Studio Navigation editor temp files
.navigation/

# Android Studio captures folder
captures/



================================================
FILE: .travis.yml
================================================
language: go

go:
  - 1.6


================================================
FILE: LICENSE
================================================
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions
      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright 2016 Sridhar Venkatakrishnan

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.


================================================
FILE: LoadJNI.java
================================================
package go;

import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.InputStream;
import java.io.File;
import java.io.IOException;

public class LoadJNI {
	static {
		try {
			loadLibrary();
		} catch (IOException ex) {
			throw new RuntimeException(ex);
		}
	}

	private static void loadLibrary() throws IOException {
		File temp = File.createTempFile("gojava", "gojava");
		temp.deleteOnExit();

		InputStream input = LoadJNI.class.getResourceAsStream("/go/libgojava");
		if (input == null) {
			throw new RuntimeException("Go JNI library not found in classpath");
		}
		OutputStream out = new FileOutputStream(temp);
		try {
			byte[] buffer = new byte[1024];
			int readBytes = 0;
			while ((readBytes = input.read(buffer)) != -1) {
				out.write(buffer, 0, readBytes);
			}
		} finally {
			out.close();
			input.close();
		}
		System.load(temp.getAbsolutePath());
	}
}

================================================
FILE: MoreAsserts.java
================================================
package go;

import go.LoadJNI;
import java.util.Arrays;
import java.lang.Math;
import java.lang.reflect.Method;
import java.util.regex.Pattern;

import go.SeqTest;

public class MoreAsserts {
    public static void assertTrue(String msg, boolean condition) {
        if (!condition) {
            throw new RuntimeException(msg);
        }
    }

    public static void assertTrue(boolean condition) {
        if (!condition) {
            throw new RuntimeException("assert failed");
        }
    }

    public static void assertEquals(int expected, int actual) {
        assertTrue(expected == actual);
    }

    public static void assertFalse(boolean condition) {
        assertTrue(!condition);
    }

    public static void assertFalse(String msg, boolean condition) {
        assertTrue(msg, !condition);
    }

    public static void assertEquals(String msg, int expected, int actual) {
        assertTrue(msg, expected == actual);
    }

    public static void assertEquals(String msg, long expected, long actual) {
        assertTrue(msg, expected == actual);
    }

    public static void assertEquals(String msg, String expected, String actual) {
        assertTrue(String.format("%s expected:%s != actual:%s", msg, expected, actual), expected.equals(actual));
    }

    public static void assertEquals(String msg, boolean expected, boolean actual) {
        assertTrue(msg, expected == actual);
    }
    public static void assertEquals(String msg, byte[] expected, byte[] actual) {
        assertTrue(msg, Arrays.equals(expected, actual));
    }

    public static void assertEquals(String msg, double expected, double actual, double epsilon) {
        assertTrue(msg, Math.abs(expected - actual) < epsilon);
    }

    public static void assertEquals(String msg, Object expected, Object actual) {
        assertTrue(msg, (expected == null && actual == null) || (expected.equals(actual)));
    }

    public static void fail(String msg) {
        throw new RuntimeException(msg);
    }

    public static void main(String[] args) {
        SeqTest test = new SeqTest();
        Class c = test.getClass();
        boolean failed = false;
        for (Method method : c.getDeclaredMethods()) {
            if (!method.getName().startsWith("test") || !Pattern.matches(args[0], method.getName())) {
                continue;
            }

            System.out.print(method.getName());
            try {
                method.invoke(test);
                System.out.println(" PASS");
            } catch (Exception ex) {
                System.out.println(" FAIL");
                ex.printStackTrace();
                failed = true;
            }
        }
        // NOTE: We need to call System.exit to force all go threads to exit.
        System.exit(failed ? 1 : 0);
    }
}



================================================
FILE: README.md
================================================
## GoJava - Java bindings to Go packages [![Build Status](https://travis-ci.org/sridharv/gojava.svg?branch=master)](https://travis-ci.org/sridharv/gojava)

GoJava uses a [forked version of gomobile](https://github.com/sridharv/gomobile-java) to generate Java bindings to Go packages.
The same set of types are supported. Details on how the binding works can be found [here](https://godoc.org/golang.org/x/mobile/cmd/gobind).

### Usage

```
	gojava [-v] [-o <jar>] [-s <dir>] build [<pkg1>, [<pkg2>...]]

	This generates a jar containing Java bindings to the specified Go packages.

	-o string
	    Path to write the generated jar file. (default "libgojava.jar")
	-s string
	    Additional path to scan for Java source code. These files will be compiled and
	    included in the final jar.
	-v  Verbose output.
```

You can include the generated jar in your build using the build tool of your choice.
The jar contains a native library (built for the build platform) which is loaded automatically.
Cross platform builds are not currently supported.

NOTE: This has only been tested on an OSX developer machine and Linux (on Travis) and not in production.


================================================
FILE: gojava.go
================================================
/*
Command gojava is a tool for creating Java bindings to Go packages.

Usage

	gojava [-v] [-o <jar>] [-s <dir>] build [<pkg1>, [<pkg2>...]]

	This generates a jar containing Java bindings to the specified Go packages.

	-o string
	    Path to write the generated jar file. (default "libgojava.jar")
	-s string
	    Additional path to scan for Java source code. These files will be compiled and
	    included in the final jar.
	-v  Verbose output.
*/
package main

import (
	"go/build"
	"path/filepath"
	"reflect"

	"fmt"
	"go/importer"
	"go/token"
	"go/types"
	"os"
	"os/exec"
	"strings"

	"io/ioutil"

	"archive/zip"
	"runtime"

	"flag"

	"github.com/sridharv/gomobile-java/bind"
)

func runCommand(cmd string, args ...string) error {
	if out, err := exec.Command(cmd, args...).CombinedOutput(); err != nil {
		return fmt.Errorf("%s %s: %v: %s", cmd, strings.Join(args, " "), err, string(out))
	}
	return nil
}

var javaHome = os.Getenv("JAVA_HOME")
var cwd string
var verbose = false

func verbosef(format string, a ...interface{}) {
	if !verbose {
		return
	}
	fmt.Printf(format, a...)
}

func initBuild() (string, func(), error) {
	if javaHome == "" {
		return "", nil, fmt.Errorf("$JAVA_HOME not set")
	}
	var err error
	if cwd, err = os.Getwd(); err != nil {
		return "", nil, err
	}
	tmpDir, err := ioutil.TempDir("", "gojava")
	if err != nil {
		return "", nil, err
	}
	return tmpDir, func() {
		if err := os.RemoveAll(tmpDir); err != nil {
			fmt.Fprintln(os.Stderr, "failed to remove temp dir:", tmpDir, err)
		}
		if err := os.Chdir(cwd); err != nil {
			fmt.Fprintln(os.Stderr, "failed to change to dir:", cwd, err)
		}
	}, nil
}

func loadExportData(pkgs []string) ([]*types.Package, error) {
	// Load export data for the packages
	if err := runCommand("go", append([]string{"install"}, pkgs...)...); err != nil {
		return nil, err
	}
	typePkgs := make([]*types.Package, len(pkgs))

	for i, p := range pkgs {
		buildPkg, err := build.Import(p, cwd, build.AllowBinary)
		if err != nil {
			return nil, err
		}
		if typePkgs[i], err = importer.Default().Import(buildPkg.ImportPath); err != nil {
			return nil, err
		}
	}
	return typePkgs, nil
}

func createDirs(dirs ...string) error {
	for _, d := range dirs {
		if err := os.MkdirAll(d, 0700); err != nil {
			return err
		}
	}
	return nil
}

func bindPackages(bindDir, javaDir string, pkgs []*types.Package) ([]string, error) {
	fs, javaFiles := token.NewFileSet(), make([]string, 0)
	for _, p := range pkgs {
		goFile := filepath.Join(bindDir, "go_"+p.Name()+"main.go")
		f, err := os.OpenFile(goFile, os.O_CREATE|os.O_RDWR, 0600)
		if err != nil {
			return nil, fmt.Errorf("failed to open: %s: %v", goFile, err)
		}
		conf := &bind.GeneratorConfig{Writer: f, Fset: fs, Pkg: p, AllPkg: pkgs}
		if err := bind.GenGo(conf); err != nil {
			return nil, fmt.Errorf("failed to bind %s:%v", p.Name(), err)
		}
		if err := f.Close(); err != nil {
			return nil, err
		}
		javaFile := strings.Title(p.Name()) + ".java"
		if err := bindJava(javaDir, javaFile, conf, int(bind.Java)); err != nil {
			return nil, err
		}
		if err := bindJava(bindDir, "java_"+p.Name()+".c", conf, int(bind.JavaC)); err != nil {
			return nil, err
		}
		if err := bindJava(bindDir, p.Name()+".h", conf, int(bind.JavaH)); err != nil {
			return nil, err
		}
		javaFiles = append(javaFiles, filepath.Join(javaDir, javaFile))
	}
	return javaFiles, nil
}

func addExtraFiles(javaDir, sourceDir string) ([]string, error) {
	if sourceDir == "" {
		return nil, nil
	}
	var extraFiles []string
	err := filepath.Walk(sourceDir, func(path string, info os.FileInfo, walkErr error) error {
		if walkErr != nil {
			return walkErr
		}
		if info.IsDir() {
			return nil
		}
		fileName, err := filepath.Rel(sourceDir, path)
		if err != nil {
			return err
		}
		if strings.HasSuffix(fileName, ".java") {
			p := filepath.Join(javaDir, fileName)
			extraFiles = append(extraFiles, p)
			return copyFile(p, path)
		}
		return nil
	})
	if err != nil {
		return nil, err
	}
	if len(extraFiles) == 0 {
		verbosef("warning: argument -s was passed on command line, but no .java files were found in '%s'\n", sourceDir)
	}
	return extraFiles, nil
}

func createSupportFiles(bindDir, javaDir, mainFile string) error {
	bindPkg, err := build.Import(reflect.TypeOf(bind.ErrorList{}).PkgPath(), "", build.FindOnly)
	if err != nil {
		return err
	}
	bindJavaPkgDir := filepath.Join(bindPkg.Dir, "java")
	toCopy := []filePair{
		{filepath.Join(bindDir, "seq.go"), filepath.Join(bindPkg.Dir, "seq.go.support")},
		{filepath.Join(bindDir, "seq_java.go"), filepath.Join(bindJavaPkgDir, "seq_android.go.support")},
		{filepath.Join(bindDir, "seq.c"), filepath.Join(bindJavaPkgDir, "seq_android.c.support")},
		{filepath.Join(bindDir, "seq.h"), filepath.Join(bindJavaPkgDir, "seq.h")},
		{filepath.Join(javaDir, "Seq.java"), filepath.Join(bindJavaPkgDir, "Seq.java")},
		{filepath.Join(javaDir, "LoadJNI.java"), filepath.Join(bindPkg.Dir, "..", "..", "gojava", "LoadJNI.java")},
	}
	if err := copyFiles(toCopy); err != nil {
		return err
	}
	if err := ioutil.WriteFile(mainFile, []byte(fmt.Sprintf(javaMain, bindPkg.ImportPath)), 0600); err != nil {
		return err
	}
	inc1, inc2 := filepath.Join(javaHome, "include"), filepath.Join(javaHome, "include", runtime.GOOS)
	flagFile := filepath.Join(bindDir, "gojavacimport.go")

	return ioutil.WriteFile(flagFile, []byte(fmt.Sprintf(javaInclude, inc1, inc2)), 0600)
}

func buildGo(classDir, mainDir string) error {
	dylib := filepath.Join(classDir, "libgojava")
	if err := os.Chdir(mainDir); err != nil {
		return err
	}
	return runCommand("go", "build", "-o", dylib, "-buildmode=c-shared", ".")
}

func buildJava(jarDir, javaDir string, javaFiles []string) error {
	if err := os.Chdir(javaDir); err != nil {
		return err
	}
	javaFiles = append(javaFiles, filepath.Join(javaDir, "Seq.java"), filepath.Join(javaDir, "LoadJNI.java"))
	return runCommand("javac", append([]string{
		"-d", jarDir,
		"-sourcepath", filepath.Join(javaDir, ".."),
	}, javaFiles...)...)
}

func createJar(target, jarDir string) error {
	if err := os.Chdir(cwd); err != nil {
		return err
	}

	dirName := filepath.Dir(target)
	if _, err := os.Stat(dirName); err != nil && err == os.ErrNotExist {
		if err = os.MkdirAll(dirName, 0644); err != nil {
			return fmt.Errorf("failed to create: %v: %+v", dirName, err)
		}
	}

	t, err := ioutil.TempFile(dirName, "."+filepath.Base(target)+".tmp")
	if err != nil {
		return fmt.Errorf("failed to create temporary file: %+v", err)
	}
	tempFileName := t.Name()
	var successful bool
	defer func() {
		if successful {
			return
		}
		if err := os.Remove(tempFileName); err != nil {
			fmt.Fprintf(os.Stderr, "WARNING: failed to delete temporary file %s: %+v", tempFileName, err)
		}
	}()
	w := zip.NewWriter(t)
	verbosef("Building %s\n", tempFileName)
	if err := filepath.Walk(jarDir, func(path string, info os.FileInfo, walkErr error) error {
		if walkErr != nil {
			return walkErr
		}
		if info.IsDir() {
			return nil
		}
		fileName, err := filepath.Rel(jarDir, path)
		verbosef("Adding %s\n", fileName)
		if err != nil {
			return err
		}
		f, err := w.Create(fileName)
		if err != nil {
			return err
		}
		d, err := ioutil.ReadFile(path)
		if err != nil {
			return err
		}
		if _, err := f.Write(d); err != nil {
			return err
		}
		return nil
	}); err != nil {
		return err
	}
	if err := w.Close(); err != nil {
		return err
	}
	if err := t.Close(); err != nil {
		return err
	}
	if err := os.Rename(tempFileName, target); err != nil {
		return fmt.Errorf("failed to atomically rename: %v", err)
	}
	successful = true
	fmt.Printf("Finished building %s\n", target)
	return nil
}

func bindToJar(target string, sourceDir string, pkgs ...string) error {
	tmpDir, cleanup, err := initBuild()
	if err != nil {
		return err
	}
	defer cleanup()

	typePkgs, err := loadExportData(pkgs)
	if err != nil {
		return err
	}

	bindDir := filepath.Join(tmpDir, "gojava_bind")
	mainDir := filepath.Join(bindDir, "main")
	mainFile := filepath.Join(mainDir, "main.go")
	javaDir := filepath.Join(tmpDir, "src/go")
	jarDir := filepath.Join(tmpDir, "classes")
	classDir := filepath.Join(tmpDir, "classes/go")

	if err = createDirs(classDir, javaDir, mainDir); err != nil {
		return err
	}

	javaFiles, err := bindPackages(bindDir, javaDir, typePkgs)
	if err != nil {
		return err
	}
	extraFiles, err := addExtraFiles(javaDir, sourceDir)
	if err != nil {
		return err
	}
	javaFiles = append(javaFiles, extraFiles...)
	if err := createSupportFiles(bindDir, javaDir, mainFile); err != nil {
		return err
	}

	if err := buildGo(classDir, mainDir); err != nil {
		return err
	}
	if err := buildJava(jarDir, javaDir, javaFiles); err != nil {
		return err
	}
	return createJar(target, jarDir)
}

func copyFile(dst, src string) error {
	d, err := ioutil.ReadFile(src)
	if err != nil {
		return err
	}
	return ioutil.WriteFile(dst, d, 0600)
}

type filePair struct {
	dst string
	src string
}

func copyFiles(files []filePair) error {
	for _, p := range files {
		if err := copyFile(p.dst, p.src); err != nil {
			return err
		}
	}
	return nil
}

func bindJava(dir, file string, conf *bind.GeneratorConfig, ft int) error {
	path := filepath.Join(dir, file)
	w, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0600)
	if err != nil {
		return fmt.Errorf("failed to generate %s: %v", path, err)
	}
	conf.Writer = w
	defer func() { conf.Writer = nil }()

	switch ft {
	case int(bind.Java):
		err = bind.GenJava(conf, "", bind.Java)
	case int(bind.JavaH):
		err = bind.GenJava(conf, "", bind.JavaH)
	case int(bind.JavaC):
		err = bind.GenJava(conf, "", bind.JavaC)
	default:
		err = fmt.Errorf("unsupported bind type: %d", ft)
	}
	if err != nil {
		return err
	}
	return w.Close()
}

const javaInclude = `package gojava_bind

// #cgo CFLAGS: -Wall -I%s -I%s
import "C"

`
const javaMain = `package main

import (
	_ %q
	_ ".."
)

func main() {}
`

const usage = `gojava is a tool for creating Java bindings to Go

Usage:

	gojava [-v] [-o <jar>] [-s <dir>] build [<pkg1>, [<pkg2>...]]

This generates a jar containing Java bindings to the specified Go packages.
`

func main() {
	o := flag.String("o", "libgojava.jar", "Path to the generated jar file.")
	s := flag.String("s", "", "Additional path to scan for Java source code.")
	flag.BoolVar(&verbose, "v", false, "Verbose output.")
	flag.Usage = func() {
		fmt.Fprintln(os.Stderr, usage)
		flag.PrintDefaults()
	}
	flag.Parse()
	if flag.NArg() < 2 || flag.Args()[0] != "build" {
		flag.Usage()
		os.Exit(1)
	}
	if err := bindToJar(*o, *s, flag.Args()[1:]...); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}


================================================
FILE: gojava_test.go
================================================
package main

import (
	"testing"

	"flag"
	"go/build"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"

	"github.com/surullabs/lint"
)

var javaTest = flag.String("javatest", ".*", "Run only java tests matching the regular expression")

func init() {
	verbose = testing.Verbose()
}

func TestLint(t *testing.T) {
	if err := lint.Default.Check("."); err != nil {
		t.Fatal(err)
	}
}

func TestJavaBind(t *testing.T) {
	tmpDir, err := ioutil.TempDir("", "gojavatest")
	if err != nil {
		t.Fatal(err)
	}
	jar := filepath.Join(tmpDir, "gojavatest.jar")
	if err := bindToJar(jar,
		"",
		"github.com/sridharv/gomobile-java/bind/testpkg",
		"github.com/sridharv/gomobile-java/bind/testpkg/secondpkg",
		"github.com/sridharv/gomobile-java/bind/testpkg/simplepkg",
	); err != nil {
		t.Fatal(err)
	}

	toCopy := []filePair{
		{filepath.Join(tmpDir, "MoreAsserts.java"), "MoreAsserts.java"},
		{filepath.Join(tmpDir, "SeqTest.java"), filepath.Join(build.Default.GOPATH, "src/github.com/sridharv/gomobile-java/bind/java/SeqTest.java")},
	}
	if err := copyFiles(toCopy); err != nil {
		t.Fatal(err)
	}
	if err := runCommand("javac", "-cp", jar, "-d", tmpDir, toCopy[0].dst, toCopy[1].dst); err != nil {
		t.Fatal(err)
	}
	cmd := exec.Command("java", "-cp", jar+":"+tmpDir, "go.MoreAsserts", *javaTest)
	cmd.Stderr = os.Stderr
	cmd.Stdout = os.Stdout
	if err := cmd.Run(); err != nil {
		t.Fatal(err)
	}
}

func TestSourceDir(t *testing.T) {
	tmpDir, err := ioutil.TempDir("", "gojavatest")
	if err != nil {
		t.Fatal(err)
	}
	jar := filepath.Join(tmpDir, "gojavatest.jar")
	if err := bindToJar(jar,
		"testdata",
		"github.com/sridharv/gomobile-java/bind/testpkg",
	); err != nil {
		t.Fatal(err)
	}
	cmd := exec.Command("java", "-cp", jar, "go.SourceDirTest")
	cmd.Stderr = os.Stderr
	cmd.Stdout = os.Stdout
	if err := cmd.Run(); err != nil {
		t.Fatal(err)
	}
}


================================================
FILE: testdata/SourceDirTest.java
================================================
package go;

public class SourceDirTest {
    public static void main(String[] args) {
        System.out.println("testSourceDirInclusion PASS");
    }
}