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  package com.taobao.android.builder.tools.proguard;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import com.alibaba.fastjson.JSON;
  
  import com.android.build.gradle.internal.api.AppVariantContext;
  import com.android.build.gradle.internal.api.AwbTransform;
  import com.google.common.collect.Lists;
  import com.taobao.android.builder.AtlasBuildContext;
  import com.taobao.android.builder.dependency.model.AwbBundle;
  import com.taobao.android.builder.tasks.app.BuildAtlasEnvTask;
  import com.taobao.android.builder.tools.FileNameUtils;
  import com.taobao.android.builder.tools.ReflectUtils;
  import com.taobao.android.builder.tools.cache.FileCacheCenter;
  import com.taobao.android.builder.tools.cache.FileCacheException;
  import com.taobao.android.builder.tools.log.FileLogger;
  import com.taobao.android.builder.tools.proguard.domain.Input;
  import com.taobao.android.builder.tools.proguard.domain.Result;
  import com.taobao.android.builder.tools.proguard.dump.BundleProguardDumper;
  import com.taobao.android.builder.tools.proguard.dump.ClazzRefInfo;
  import com.taobao.android.builder.tools.zip.ZipUtils;
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.lang3.StringUtils;
  import org.jetbrains.annotations.NotNull;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import proguard.Configuration;
  import proguard.ConfigurationParser;
  import proguard.ParseException;
  import proguard.ProGuard;
  import proguard.classfile.ClassPool;
  
  import static com.taobao.android.builder.tools.proguard.AwbProguardConfiguration.INJARS_OPTION;
  import static com.taobao.android.builder.tools.proguard.AwbProguardConfiguration.OUTJARS_OPTION;
  import static proguard.AtlasProguardConstants.INOUT_CFG;
  
  /**
   * Created by wuzhong on 2017/5/13.
   */
  public class BundleProguarder {
  
      public static final String CACHE_TYPE = "proguard-bundles-0.12";
  
      private static Logger logger = LoggerFactory.getLogger(BundleProguarder.class);
      private static FileLogger fileLogger = FileLogger.getInstance("proguard");
  
      public static void execute(AppVariantContext appVariantContext, Input input) throws Exception {
          if (input.proguardOutputDir != null && input.proguardOutputDir.exists()) {
              FileUtils.cleanDirectory(input.proguardOutputDir);
          }
          if (!appVariantContext.getAtlasExtension().getTBuildConfig().isProguardCacheEnabled()) {
              doProguard(appVariantContext, input);
              return;
          }
  
          String md5 = input.getMd5();
  
          Result result = loadProguardFromCache(appVariantContext, input);
  
          String bundleName = input.getAwbBundles().get(0).getAwbBundle().getName();
  
          if (result.success) {
              fileLogger.log(bundleName + " hit cache " + result.cacheDir.getAbsolutePath());
              return;
          }
          fileLogger.log(bundleName + " miss cache " + result.cacheDir.getAbsolutePath());
  
          long startTime = System.currentTimeMillis();
          doProguard(appVariantContext, input);
          double during = (System.currentTimeMillis() - startTime) / 1000.0;
          fileLogger.log(bundleName + "proguard consume (s) " + during);
  
          //cache
          if (null != result.cacheDir) {
              try {
                  cacheProguard(appVariantContext, input, result);
              } catch (Throwable e) {
                  logger.error(e.getMessage(), e);
              }
          }
  
      }
  
      public static Result loadProguardFromCache(AppVariantContext appVariantContext, Input input) throws Exception {
  
          Result result = new Result();
  
          String md5 = input.getMd5();
  
          result.key = input.getAwbBundles().get(0).getAwbBundle().getName() + "_" + md5;
  
          logger.info("bundle proguard for " + result.key + " with md5 key " + md5);
  
          File cacheDir = FileCacheCenter.queryFile(CACHE_TYPE, result.key, true,
                                                    isRemoteCacheEnabled(appVariantContext));
          result.cacheDir = cacheDir;
          if (null == cacheDir || !cacheDir.exists()) {
              logger.warn("bundle proguard for " + result.key + " miss  cache " + cacheDir.getAbsolutePath());
              return result;
          }
          logger.warn("bundle proguard for " + result.key + " hit  cache ");
  
          File keepJson = new File(cacheDir, "keep.json");
          File proguardCfg = new File(cacheDir, "proguard.cfg");
          File usageCfg = new File(cacheDir, "usage.cfg");
  
          Map<String,File> md5Map = input.getMd5Files();
  
          if (input.getAwbBundles().get(0).getAwbBundle().isMainBundle()) {
              AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).getMainDexFiles().clear();
              AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).getInputDirs().clear();
  
              for (File file : cacheDir.listFiles()) {
                  if (file.getName().endsWith("jar") && ZipUtils.isZipFile(file)) {
  
                      String jarMd5 = file.getName().replace(".jar","");
                      File srcFile = md5Map.get(jarMd5);
  
                      if ( null != srcFile && srcFile.exists()){
                          String fileName = FileNameUtils.getUniqueJarName(srcFile);
                          FileUtils.copyFile(file,new File(input.proguardOutputDir,   fileName+".jar"));
                          AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).addMainDex(new BuildAtlasEnvTask.FileIdentity(fileName,new File(input.proguardOutputDir, fileName + ".jar"),false,false));
                      }else {
                          FileUtils.copyFileToDirectory(file, input.proguardOutputDir);
                          AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).addMainDex(new BuildAtlasEnvTask.FileIdentity(file.getName(),new File(input.proguardOutputDir, file.getName()),false,false));
  
                      }
  
                  }
              }
  
              File awbProguardDir = input.printConfiguration.getParentFile();
              //FileUtils.copyFileToDirectory(keepJson, awbProguardDir);
              if (proguardCfg.exists()) {
                  FileUtils.copyFileToDirectory(proguardCfg,
                                                awbProguardDir);
              }
              if (usageCfg.exists()) {
                  FileUtils.copyFileToDirectory(usageCfg,
                                                awbProguardDir);
              }
  
              result.success = true;
              return result;
          } else {
  
              if (!keepJson.exists()) {
                  logger.error("bundle proguard for " + result.key + " missing keep.json  ");
                  FileUtils.deleteDirectory(cacheDir);
                  return result;
              }
  
              Map<AwbTransform, List<File>> transformListMap = new HashMap<>();
              for (AwbTransform awbTransform : input.getAwbBundles()) {
  
                  File awbProguardDir = appVariantContext.getAwbProguardDir(awbTransform.getAwbBundle());
                  FileUtils.copyFileToDirectory(keepJson, awbProguardDir);
                  if (proguardCfg.exists()) {
                      FileUtils.copyFileToDirectory(proguardCfg,
                                                    awbProguardDir);
                  }
                  if (usageCfg.exists()) {
                      FileUtils.copyFileToDirectory(usageCfg,
                                                    awbProguardDir);
                  }
  
                  List<File> inputFiles = new ArrayList<>();
                  transformListMap.put(awbTransform, inputFiles);
  
                  List<File> files = new ArrayList<>();
                  files.addAll(awbTransform.getInputLibraries());
  
                  //configs.add();
                  if (null != awbTransform.getInputDirs() && awbTransform.getInputDirs().size() > 0) {
                      files.addAll(awbTransform.getInputDirs());
                  }
  
                  for (File oldFile : files) {
                      File file = new File(cacheDir, input.getFileMd5s().get(oldFile) + ".jar");
                      if (file.exists()) {
                          if (ZipUtils.isZipFile(file)) {
                              inputFiles.add(file);
                          }
                      } else {
                          logger.error("miss proguard jar for :" + file.getAbsolutePath());
                          FileUtils.deleteDirectory(cacheDir);
                          logger.error("delete cache Dir " + cacheDir.getAbsolutePath());
                          return result;
                      }
                  }
              }
  
              for (AwbTransform awbTransform : input.getAwbBundles()) {
                  awbTransform.setInputFiles(transformListMap.get(awbTransform));
                  awbTransform.getInputDirs().clear();
                  awbTransform.getInputLibraries().clear();
                  awbTransform.getAwbBundle().setKeepProguardFile(keepJson);
              }
  
              result.success = true;
              return result;
  
          }
  
      }
  
      private static boolean isRemoteCacheEnabled(AppVariantContext appVariantContext) {
          return appVariantContext.getAtlasExtension().getTBuildConfig().isProguardNetworkCacheEnabled();
      }
  
      public static void doProguard(AppVariantContext appVariantContext, Input input)
          throws Exception {
  
          Configuration configuration = parseConfiguration(appVariantContext, input);
          configuration.dump = input.dump;
          if (null == input.printConfiguration) {
              configuration.printConfiguration = new File(
                  appVariantContext.getAwbProguardDir(input.getAwbBundles().get(0).getAwbBundle()), "proguard.cfg");
          } else {
              configuration.printConfiguration = input.printConfiguration;
          }
  
          configuration.printSeeds = null;
          configuration.dump = null;
          configuration.obfuscate = false;
  //        configuration.optimizationPasses = 1;
  
          configuration.printUsage = input.printUsage;
          configuration.printMapping = input.printMapping;
  
          // Execute ProGuard with these options.
          ProGuard proGuard = new ProGuard(configuration);
  
          System.out.println(">>> start to do proguard");
  
          proGuard.execute();
          System.out.println("<<< end proguard");
  
          ClassPool classPool = (ClassPool)ReflectUtils.getField(proGuard, "programClassPool");
  
          Map<String, ClazzRefInfo> clazzRefInfoMap = BundleProguardDumper.dump(proGuard,
                                                                                input.getDefaultLibraryClasses());
  
  
          //Fileoutputs
          for (AwbTransform awbTransform : input.getAwbBundles()) {
              if (!awbTransform.getAwbBundle().isMainBundle()) {
                  AwbBundle awbBundle = awbTransform.getAwbBundle();
                  File fileOut = new File(appVariantContext.getAwbProguardDir(awbBundle), "keep.json");
                  fileOut.delete();
                  fileOut.getParentFile().mkdirs();
                  FileUtils.write(fileOut, JSON.toJSONString(clazzRefInfoMap));
                  awbBundle.setKeepProguardFile(fileOut);
              }
          }
  
      }
  
  
      @NotNull
      private static Configuration parseConfiguration(AppVariantContext appVariantContext, Input input)
          throws IOException, ParseException {
          Configuration configuration = new Configuration();
  
          List<File> proguardFiles = new ArrayList<>();
  
          proguardFiles.add(printInOut(appVariantContext, input));
  
          proguardFiles.addAll(input.getDefaultProguardFiles());
          proguardFiles.addAll(input.getParentKeeps());
          for (File file : proguardFiles) {
              ConfigurationParser parser = new ConfigurationParser(file, System.getProperties());
              try {
                  parser.parse(configuration);
              } finally {
                  parser.close();
              }
          }
  
          for (File file : input.getLibraryProguardFiles()) {
              KeepOnlyConfigurationParser parser = new KeepOnlyConfigurationParser(file, System.getProperties());
              try {
                  parser.parse(configuration);
              } finally {
                  parser.close();
              }
          }
          return configuration;
      }
  
      private static File printInOut(AppVariantContext appVariantContext, Input input)
          throws IOException {
  
          File proguardDir = input.proguardOutputDir;
          if (null == proguardDir) {
              proguardDir = appVariantContext.getAwbProguardDir(input.getAwbBundles().get(0).getAwbBundle());
          }
          proguardDir.mkdirs();
  
          File inoutConfigs = new File(proguardDir, INOUT_CFG);
          List<String> configs = new ArrayList<>();
  
  
  
  
          for (AwbTransform awbTransform : input.getAwbBundles()) {
  
              List<File> inputLibraries = Lists.newArrayList();
  
              for (File inputLibrary : awbTransform.getInputLibraries()) {
  
                  configs.add(INJARS_OPTION + " " + inputLibrary.getAbsolutePath());
  
                  String name = FileNameUtils.getUniqueJarName(inputLibrary);
                  File obsJar = new File(proguardDir, name + ".jar");
  
                  input.proguardJarMap.put(obsJar, input.getFileMd5s().get(inputLibrary));
  
                  inputLibraries.add(obsJar);
                  configs.add(OUTJARS_OPTION + " " + obsJar.getAbsolutePath());
  
                  if (inputLibrary.isDirectory() && AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).getInputDirs().contains(inputLibrary)){
                      input.maindexFolderTransform.put(inputLibrary,obsJar);
                  }else if (AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).inMainDex(inputLibrary)) {
                      input.maindexFileTransform.put(inputLibrary,obsJar);
  //                    AtlasBuildContext.atlasMainDexHelper.updateMainDexFile(inputLibrary, obsJar);
                  }else if (awbTransform.getAwbBundle().isMainBundle()){
                      AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).addMainDex(new BuildAtlasEnvTask.FileIdentity(obsJar.getName(),obsJar,false,false));
                  }
              }
  
              //configs.add();
              if (null != awbTransform.getInputDirs() && awbTransform.getInputDirs().size() > 0) {
  
                  for (File dir:awbTransform.getInputDirs()) {
                      if (!dir.exists()){
                          continue;
                      }
                      configs.add(INJARS_OPTION + " " + dir.getAbsolutePath());
  
                      String name = input.getFileMd5s().get(dir);
                      if (null == name) {
                          name = FileNameUtils.getUniqueFileName(dir.getName(), "proguard");
                      }
  
                      File obsJar = new File(proguardDir,
                              name + ".jar");
                      inputLibraries.add(obsJar);
                      configs.add(OUTJARS_OPTION + " " + obsJar.getAbsolutePath());
                      if (awbTransform.getAwbBundle().isMainBundle()) {
                          AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).getInputDirs().clear();
                          AtlasBuildContext.atlasMainDexHelperMap.get(appVariantContext.getVariantName()).addMainDex(new BuildAtlasEnvTask.FileIdentity(obsJar.getName(), obsJar, false, false));
                      }
                  }
  
              }
  
              awbTransform.setInputFiles(inputLibraries);
              awbTransform.getInputDirs().clear();
              awbTransform.getInputLibraries().clear();
          }
  
          for (File library : input.getLibraries()) {
              configs.add("-libraryjars " + library.getAbsolutePath());
          }
  
          FileUtils.writeLines(inoutConfigs, configs);
  
          return inoutConfigs;
      }
  
      private static void cacheProguard(AppVariantContext appVariantContext, Input input, Result result)
          throws FileCacheException, IOException {
  
          AwbBundle awbBundle = input.getAwbBundles().get(0).getAwbBundle();
          File tmpDir = new File(appVariantContext.getScope().getGlobalScope().getIntermediatesDir(),
                                 "progurad-cache/" + awbBundle.getName());
          tmpDir.mkdirs();
  
          for (AwbTransform awbTransform : input.getAwbBundles()) {
              for (File file : awbTransform.getInputFiles()) {
                  if (file.exists()) {
                      String md5 = input.proguardJarMap.get(file);
                      if (StringUtils.isNoneEmpty(md5)) {
                          FileUtils.copyFile(file, new File(tmpDir, md5 + ".jar"));
                      } else {
                          FileUtils.copyFileToDirectory(file, tmpDir);
                      }
                  } else {
                      new File(tmpDir, file.getName()).createNewFile();
                  }
              }
          }
  
          //Keep cache. Json
          File keepFile = awbBundle.getKeepProguardFile();
          if (null != keepFile && keepFile.exists()) {
              FileUtils.copyFileToDirectory(keepFile, tmpDir);
          }
  
          File proguardCfg = new File(null != input.proguardOutputDir ? input.proguardOutputDir
                                          : appVariantContext
                                              .getAwbProguardDir(awbBundle),
                                      "proguard.cfg");
          if (!proguardCfg.exists()){
              proguardCfg = input.printConfiguration;
          }
          if ( null != proguardCfg && proguardCfg.exists()) {
              FileUtils.copyFileToDirectory(proguardCfg, tmpDir);
          }
  
          File usageCfg = new File(null != input.proguardOutputDir ? input.proguardOutputDir
                                       : appVariantContext
                                           .getAwbProguardDir(awbBundle),
                                   "usage.cfg");
          if (!usageCfg.exists()){
              usageCfg = input.printUsage;
          }
          if ( null != usageCfg && usageCfg.exists()) {
              FileUtils.copyFileToDirectory(usageCfg, tmpDir);
          }
  
          FileCacheCenter.cacheFile(CACHE_TYPE, result.key, tmpDir,
                                    AtlasBuildContext.sBuilderAdapter.pushCacheToNetwork && isRemoteCacheEnabled(
                                        appVariantContext));
  
      }
  }
  