Java tutorial
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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 Alibaba Group * * 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. * * */ package com.taobao.android.builder.tools.multidex.mutli; import com.android.build.gradle.internal.api.AppVariantContext; import com.android.builder.packaging.JarMerger; import com.taobao.android.builder.extension.MultiDexConfig; import com.taobao.android.builder.tools.FileNameUtils; import com.taobao.android.builder.tools.JarUtils; import com.taobao.android.builder.tools.multidex.dex.DexMerger; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.*; import java.util.*; import java.util.jar.JarEntry; import java.util.jar.JarFile; import java.util.jar.JarOutputStream; import java.util.zip.ZipEntry; /** * Created by wuzhong on 2017/6/16. */ public class JarRefactor { private static Logger logger = LoggerFactory.getLogger(JarRefactor.class); private AppVariantContext appVariantContext; private MultiDexConfig multiDexConfig; private boolean splitJar = false; public static final int MAX_CLASSES = 3000; public JarRefactor(AppVariantContext appVariantContext, MultiDexConfig multiDexConfig) { this.appVariantContext = appVariantContext; this.multiDexConfig = multiDexConfig; } public Collection<File> repackageJarList(Collection<File> files, File mainDexListFile, boolean release) throws IOException { List<String> mainDexList = new MainDexLister(appVariantContext, multiDexConfig).getMainDexList(files, mainDexListFile); if (release) { return generateFirstDexJar(mainDexList, files); } else { return null; } } private Collection<File> generateFirstDexJar(List<String> mainDexList, Collection<File> files) throws IOException { List<File> jarList = new ArrayList<>(); List<File> folderList = new ArrayList<>(); for (File file : files) { if (file.isDirectory()) { folderList.add(file); } else { jarList.add(file); } } File dir = new File(appVariantContext.getScope().getGlobalScope().getIntermediatesDir(), "fastmultidex/" + appVariantContext.getVariantName()); FileUtils.deleteDirectory(dir); dir.mkdirs(); if (!folderList.isEmpty()) { File mergedJar = new File(dir, "jarmerging/combined.jar"); mergedJar.getParentFile().mkdirs(); mergedJar.delete(); mergedJar.createNewFile(); JarMerger jarMerger = new JarMerger(mergedJar.toPath()); for (File folder : folderList) { jarMerger.addDirectory(folder.toPath()); } jarMerger.close(); if (mergedJar.length() > 0) { jarList.add(mergedJar); } } List<File> result = new ArrayList<>(); File maindexJar = new File(dir, DexMerger.FASTMAINDEX_JAR + ".jar"); JarOutputStream mainJarOuputStream = new JarOutputStream( new BufferedOutputStream(new FileOutputStream(maindexJar))); //First order Collections.sort(jarList, new NameComparator()); for (File jar : jarList) { File outJar = new File(dir, FileNameUtils.getUniqueJarName(jar) + ".jar"); result.add(outJar); JarFile jarFile = new JarFile(jar); JarOutputStream jos = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(outJar))); Enumeration<JarEntry> jarFileEntries = jarFile.entries(); List<String> pathList = new ArrayList<>(); while (jarFileEntries.hasMoreElements()) { JarEntry ze = jarFileEntries.nextElement(); String pathName = ze.getName(); if (mainDexList.contains(pathName)) { copyStream(jarFile.getInputStream(ze), mainJarOuputStream, ze, pathName); pathList.add(pathName); } } if (!pathList.isEmpty()) { jarFileEntries = jarFile.entries(); while (jarFileEntries.hasMoreElements()) { JarEntry ze = jarFileEntries.nextElement(); String pathName = ze.getName(); if (!pathList.contains(pathName)) { copyStream(jarFile.getInputStream(ze), jos, ze, pathName); } } } jarFile.close(); IOUtils.closeQuietly(jos); if (pathList.isEmpty()) { FileUtils.copyFile(jar, outJar); } if (!appVariantContext.getAtlasExtension().getTBuildConfig().isFastProguard() && files.size() == 1) { JarUtils.splitMainJar(result, outJar, 1, MAX_CLASSES); } } IOUtils.closeQuietly(mainJarOuputStream); Collections.sort(result, new NameComparator()); result.add(0, maindexJar); return result; } private void copyStream(InputStream inputStream, JarOutputStream jos, JarEntry ze, String pathName) { try { ZipEntry newEntry = new ZipEntry(pathName); // Make sure there is date and time set. if (ze.getTime() != -1) { newEntry.setTime(ze.getTime()); newEntry.setCrc(ze.getCrc()); // If found set it into output file. } jos.putNextEntry(newEntry); IOUtils.copy(inputStream, jos); IOUtils.closeQuietly(inputStream); } catch (Exception e) { //throw new GradleException("copy stream exception", e); //e.printStackTrace(); logger.error("copy stream exception >>> " + pathName + " >>>" + e.getMessage()); } } }