| /******************************************************************************* |
| * Copyright (c) 2012 Sonatype Inc. and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Sonatype Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.tycho.extras.pack200; |
| |
| import java.io.BufferedInputStream; |
| import java.io.BufferedOutputStream; |
| import java.io.Closeable; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.List; |
| import java.util.jar.JarFile; |
| import java.util.jar.JarOutputStream; |
| import java.util.jar.Pack200; |
| import java.util.jar.Pack200.Packer; |
| import java.util.jar.Pack200.Unpacker; |
| import java.util.zip.GZIPInputStream; |
| import java.util.zip.GZIPOutputStream; |
| |
| import org.apache.maven.artifact.Artifact; |
| |
| public class Pack200Wrapper { |
| |
| public static final String COMMAND_PACK = "pack"; |
| |
| public static final String COMMAND_UNPACK = "unpack"; |
| |
| public void pack(List<Artifact> pluginArtifacts, File jar, File pack) throws IOException { |
| pack(jar, pack); |
| } |
| |
| private void pack(File jar, File pack) throws IOException, FileNotFoundException { |
| // 387541 apparently JarFile is required to preserve jar file signatures |
| JarFile is = new JarFile(jar); |
| try { |
| OutputStream os = new GZIPOutputStream(new BufferedOutputStream(new FileOutputStream(pack))); |
| try { |
| Packer packer = newPacker(); |
| packer.pack(is, os); |
| } finally { |
| close(os); |
| } |
| } finally { |
| try { |
| is.close(); |
| } catch (IOException e) { |
| // ignored |
| } |
| } |
| } |
| |
| private static void close(Closeable c) { |
| try { |
| c.close(); |
| } catch (IOException e) { |
| // ignored |
| } |
| } |
| |
| public void unpack(List<Artifact> pluginArtifacts, File packFile, File jarFile) throws IOException { |
| unpack(packFile, jarFile); |
| } |
| |
| protected void unpack(File packFile, File jarFile) throws IOException, FileNotFoundException { |
| InputStream is = new GZIPInputStream(new BufferedInputStream(new FileInputStream(packFile))); |
| try { |
| JarOutputStream os = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(jarFile))); |
| try { |
| Unpacker unpacker = Pack200.newUnpacker(); |
| unpacker.unpack(is, os); |
| } finally { |
| close(os); |
| } |
| } finally { |
| close(is); |
| } |
| } |
| |
| private Packer newPacker() { |
| Packer packer = Pack200.newPacker(); |
| // From Pack200.Packer javadoc: |
| // ... the segment limit may also need to be set to "-1", |
| // to prevent accidental variation of segment boundaries as class file sizes change slightly |
| packer.properties().put(Packer.SEGMENT_LIMIT, "-1"); |
| return packer; |
| } |
| |
| public static void main(String[] args) throws IOException { |
| if (args.length != 3) { |
| System.err.println("Syntax: " + Pack200Wrapper.class.getSimpleName() + " pack|unpack fileFrom fileTo"); |
| System.exit(-1); |
| } |
| |
| File fileFrom = new File(args[1]).getCanonicalFile(); |
| File fileTo = new File(args[2]).getCanonicalFile(); |
| |
| if (COMMAND_PACK.equals(args[0])) { |
| new Pack200Wrapper().pack(fileFrom, fileTo); |
| System.exit(0); |
| } else if (COMMAND_UNPACK.equals(args[0])) { |
| new Pack200Wrapper().unpack(fileFrom, fileTo); |
| System.exit(0); |
| } |
| |
| System.err.println("Unknown/unsupported command " + args[0]); |
| System.exit(-1); |
| } |
| |
| } |