commit 327d3f573c933f7c84f55aa8d2b30ad6786320ed Author: sridharv Date: Sun Mar 27 19:53:45 2016 +0200 Initial commit with a working build. Some of the tests are failing. diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..99e1242 --- /dev/null +++ b/.gitignore @@ -0,0 +1,178 @@ +# 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/ + diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f1ebcfb --- /dev/null +++ b/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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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. diff --git a/LoadJNI.java b/LoadJNI.java new file mode 100644 index 0000000..52fc96d --- /dev/null +++ b/LoadJNI.java @@ -0,0 +1,39 @@ +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()); + } +} \ No newline at end of file diff --git a/MoreAsserts.java b/MoreAsserts.java new file mode 100644 index 0000000..50a8a6f --- /dev/null +++ b/MoreAsserts.java @@ -0,0 +1,85 @@ +package go; + +import go.LoadJNI; +import java.util.Arrays; +import java.lang.Math; +import java.lang.reflect.Method; + +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(msg, expected == 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(); + for (Method method : c.getDeclaredMethods()) { + if (!method.getName().startsWith("test")) { + continue; + } + + System.out.print(method.getName()); + try { + method.invoke(test); + System.out.println(" PASS"); + } catch (Exception ex) { + System.out.println(" FAIL"); + ex.printStackTrace(); + } + } + } +} + diff --git a/README.md b/README.md new file mode 100644 index 0000000..8d2583f --- /dev/null +++ b/README.md @@ -0,0 +1,4 @@ +## GoJava - gobind for java + +WIP: This doesn't work yet + diff --git a/gojava.go b/gojava.go new file mode 100644 index 0000000..e77813e --- /dev/null +++ b/gojava.go @@ -0,0 +1,258 @@ +package gojava + +import ( + "go/build" + "path/filepath" + "reflect" + + "fmt" + "go/importer" + "go/token" + "go/types" + "os" + "os/exec" + "strings" + + "io/ioutil" + + "archive/zip" + "runtime" + + "github.com/sridharv/gomobile-java/bind" +) + +func runCommandWithEnv(env []string, cmd string, args ...string) error { + c := exec.Command(cmd, args...) + c.Env = append(os.Environ(), env...) + out, err := c.CombinedOutput() + if err != nil { + return fmt.Errorf("%s %s %s: %v: %s", strings.Join(env, " "), cmd, strings.Join(args, " "), err, string(out)) + } + return nil +} + +func runCommand(cmd string, args ...string) error { + return runCommandWithEnv([]string{}, cmd, args...) +} + +func createJar(target string, pkgs ...string) error { + javaHome := os.Getenv("JAVA_HOME") + if javaHome == "" { + return fmt.Errorf("$JAVA_HOME not set") + } + tmpDir, err := ioutil.TempDir("", "gojava") + if err != nil { + return err + } + defer os.RemoveAll(tmpDir) + + // Load export data for the packages + if err := runCommand("go", append([]string{"install"}, pkgs...)...); err != nil { + return err + } + typePkgs := make([]*types.Package, len(pkgs)) + + for i, p := range pkgs { + var err error + if typePkgs[i], err = importer.Default().Import(p); 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") + classDir := filepath.Join(tmpDir, "classes/go") + for _, d := range []string{classDir, javaDir, mainDir} { + if err := os.MkdirAll(d, 0700); err != nil { + return err + } + } + javacArgs := []string{"-d", filepath.Join(tmpDir, "classes"), "-sourcepath", filepath.Join(tmpDir, "src")} + + fs := token.NewFileSet() + for _, p := range typePkgs { + 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 fmt.Errorf("failed to open: %s: %v", goFile, err) + } + conf := &bind.GeneratorConfig{Writer: f, Fset: fs, Pkg: p, AllPkg: typePkgs} + if err := bind.GenGo(conf); err != nil { + return fmt.Errorf("failed to bind %s:%v", p.Name(), err) + } + if err := f.Close(); err != nil { + return err + } + javaFile := strings.Title(p.Name()) + ".java" + if err := bindJava(javaDir, javaFile, conf, int(bind.Java)); err != nil { + return err + } + if err := bindJava(bindDir, "java_"+p.Name()+".c", conf, int(bind.JavaC)); err != nil { + return err + } + if err := bindJava(bindDir, p.Name()+".h", conf, int(bind.JavaH)); err != nil { + return err + } + javacArgs = append(javacArgs, filepath.Join(javaDir, javaFile)) + } + + 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") + if err := ioutil.WriteFile(flagFile, []byte(fmt.Sprintf(javaInclude, inc1, inc2)), 0600); err != nil { + return err + } + dylib := filepath.Join(classDir, "libgojava") + back, err := cdTo(mainDir) + if err != nil { + return err + } + defer back() + if err := runCommand("go", "build", "-o", dylib, "-buildmode=c-shared", "."); err != nil { + return err + } + if err := os.Chdir(javaDir); err != nil { + return err + } + javacArgs = append(javacArgs, filepath.Join(javaDir, "Seq.java"), filepath.Join(javaDir, "LoadJNI.java")) + if err := runCommand("javac", javacArgs...); err != nil { + return err + } + t, err := os.OpenFile(target, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0600) + if err != nil { + return err + } + w := zip.NewWriter(t) + jarDir := filepath.Join(tmpDir, "classes") + 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) + 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 + } + return nil +} + +func cdTo(target string) (func(), error) { + cur, err := os.Getwd() + if err != nil { + return nil, err + } + if err := os.Chdir(target); err != nil { + return nil, err + } + return func() { + if err := os.Chdir(cur); err != nil { + panic(err) + } + }, nil +} + +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() {} +` diff --git a/gojava_test.go b/gojava_test.go new file mode 100644 index 0000000..a71dc99 --- /dev/null +++ b/gojava_test.go @@ -0,0 +1,42 @@ +package gojava + +import ( + "testing" + + "io/ioutil" + "path/filepath" + "os/exec" + "os" +) + +func TestJavaBind(t *testing.T) { + tmpDir, err := ioutil.TempDir("", "gojavatest") + if err != nil { + t.Fatal(err) + } + jar := filepath.Join("/tmp", "gojavatest.jar") + if err := createJar(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"), "../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") + cmd.Stderr = os.Stderr + cmd.Stdout = os.Stdout + if err := cmd.Run(); err != nil { + t.Fatal(err) + } +}