| // Copyright 2016 The Bazel Authors. All rights reserved. |
| // |
| // 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.google.devtools.build.android; |
| |
| import com.google.common.base.Stopwatch; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.io.ByteStreams; |
| import com.google.devtools.build.android.AndroidResourceProcessor.AaptConfigOptions; |
| import com.google.devtools.build.android.AndroidResourceProcessor.FlagAaptOptions; |
| import com.google.devtools.build.android.Converters.ExistingPathConverter; |
| import com.google.devtools.build.android.Converters.PathConverter; |
| import com.google.devtools.build.android.Converters.PathListConverter; |
| import com.google.devtools.common.options.Option; |
| import com.google.devtools.common.options.OptionsBase; |
| import com.google.devtools.common.options.OptionsParser; |
| |
| import com.android.builder.core.VariantConfiguration; |
| import com.android.ide.common.xml.AndroidManifestParser; |
| import com.android.ide.common.xml.ManifestData; |
| import com.android.io.StreamException; |
| import com.android.utils.StdLogger; |
| |
| import org.xml.sax.SAXException; |
| |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipInputStream; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| |
| /** |
| * An action to perform resource shrinking using the Gradle resource shrinker. |
| * |
| * <pre> |
| * Example Usage: |
| * java/com/google/build/android/ResourceShrinkerAction |
| * --aapt path to sdk/aapt |
| * --annotationJar path to sdk/annotationJar |
| * --androidJar path to sdk/androidJar |
| * --shrunkJar path to proguard dead code removal jar |
| * --resources path to processed resources zip |
| * --rTxt path to processed resources R.txt |
| * --primaryManifest path to processed resources AndroidManifest.xml |
| * --dependencyManifests paths to dependency library manifests |
| * --shrunkResourceApk path to write shrunk ap_ |
| * --shrunkResources path to write shrunk resources zip |
| * </pre> |
| */ |
| public class ResourceShrinkerAction { |
| private static final StdLogger stdLogger = new StdLogger(StdLogger.Level.WARNING); |
| private static final Logger logger = Logger.getLogger(ResourceShrinkerAction.class.getName()); |
| |
| /** Flag specifications for this action. */ |
| public static final class Options extends OptionsBase { |
| @Option(name = "shrunkJar", |
| defaultValue = "null", |
| category = "input", |
| converter = ExistingPathConverter.class, |
| help = "Path to the shrunk jar from a Proguard run with shrinking enabled.") |
| public Path shrunkJar; |
| |
| @Option(name = "resources", |
| defaultValue = "null", |
| category = "input", |
| converter = ExistingPathConverter.class, |
| help = "Path to the resources zip to be shrunk.") |
| public Path resourcesZip; |
| |
| @Option(name = "rTxt", |
| defaultValue = "null", |
| category = "input", |
| converter = ExistingPathConverter.class, |
| help = "Path to the R.txt of the complete resource tree.") |
| public Path rTxt; |
| |
| @Option(name = "primaryManifest", |
| defaultValue = "null", |
| category = "input", |
| converter = ExistingPathConverter.class, |
| help = "Path to the primary manifest for the resources to be shrunk.") |
| public Path primaryManifest; |
| |
| @Option(name = "dependencyManifests", |
| defaultValue = "", |
| category = "input", |
| converter = PathListConverter.class, |
| help = "A list of paths to the manifests of the dependencies.") |
| public List<Path> dependencyManifests; |
| |
| @Option(name = "shrunkResourceApk", |
| defaultValue = "null", |
| category = "output", |
| converter = PathConverter.class, |
| help = "Path to where the shrunk resource.ap_ should be written.") |
| public Path shrunkApk; |
| |
| @Option(name = "shrunkResources", |
| defaultValue = "null", |
| category = "output", |
| converter = PathConverter.class, |
| help = "Path to where the shrunk resource.ap_ should be written.") |
| public Path shrunkResources; |
| } |
| |
| private static AaptConfigOptions aaptConfigOptions; |
| private static Options options; |
| |
| private static String getManifestPackage(Path manifest) |
| throws SAXException, IOException, StreamException, ParserConfigurationException { |
| ManifestData manifestData = AndroidManifestParser.parse(Files.newInputStream(manifest)); |
| return manifestData.getPackage(); |
| } |
| |
| private static List<String> getManifestPackages(Path primaryManifest, List<Path> otherManifests) |
| throws SAXException, IOException, StreamException, ParserConfigurationException { |
| ImmutableList.Builder<String> manifestPackages = ImmutableList.builder(); |
| manifestPackages.add(getManifestPackage(primaryManifest)); |
| for (Path manifest : otherManifests) { |
| manifestPackages.add(getManifestPackage(manifest)); |
| } |
| return manifestPackages.build(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| final Stopwatch timer = Stopwatch.createStarted(); |
| // Parse arguments. |
| OptionsParser optionsParser = OptionsParser.newOptionsParser( |
| Options.class, AaptConfigOptions.class); |
| optionsParser.parseAndExitUponError(args); |
| aaptConfigOptions = optionsParser.getOptions(AaptConfigOptions.class); |
| options = optionsParser.getOptions(Options.class); |
| |
| AndroidResourceProcessor resourceProcessor = new AndroidResourceProcessor(stdLogger); |
| try { |
| // Setup temporary working directories. |
| Path working = Files.createTempDirectory("resource_shrinker_tmp"); |
| working.toFile().deleteOnExit(); |
| |
| final Path resourceFiles = working.resolve("resource_files"); |
| |
| final Path shrunkResources = working.resolve("shrunk_resources"); |
| |
| // Gather package list from manifests. |
| List<String> resourcePackages = getManifestPackages( |
| options.primaryManifest, options.dependencyManifests); |
| |
| // Expand resource files zip into working directory. |
| try (ZipInputStream zin = new ZipInputStream( |
| new FileInputStream(options.resourcesZip.toFile()))) { |
| ZipEntry entry; |
| while ((entry = zin.getNextEntry()) != null) { |
| if (!entry.isDirectory()) { |
| Path output = resourceFiles.resolve(entry.getName()); |
| Files.createDirectories(output.getParent()); |
| try (FileOutputStream fos = new FileOutputStream(output.toFile())) { |
| ByteStreams.copy(zin, fos); |
| } |
| } |
| } |
| } |
| |
| // Shrink resources. |
| ResourceShrinker resourceShrinker = new ResourceShrinker( |
| resourcePackages, |
| options.rTxt, |
| options.shrunkJar, |
| options.primaryManifest, |
| resourceFiles.resolve("res")); |
| |
| resourceShrinker.shrink(shrunkResources); |
| logger.fine(String.format("Shrinking resources finished at %sms", |
| timer.elapsed(TimeUnit.MILLISECONDS))); |
| |
| // Build ap_ with shrunk resources. |
| resourceProcessor.processResources( |
| aaptConfigOptions.aapt, |
| aaptConfigOptions.androidJar, |
| aaptConfigOptions.buildToolsVersion, |
| VariantConfiguration.Type.DEFAULT, |
| aaptConfigOptions.debug, |
| null /* packageForR */, |
| new FlagAaptOptions(aaptConfigOptions), |
| aaptConfigOptions.resourceConfigs, |
| new MergedAndroidData( |
| shrunkResources, resourceFiles.resolve("assets"), options.primaryManifest), |
| ImmutableList.<DependencyAndroidData>of() /* libraries */, |
| null /* sourceOutputDir */, |
| options.shrunkApk, |
| null /* proguardOutput */, |
| null /* publicResourcesOut */); |
| if (options.shrunkResources != null) { |
| resourceProcessor.createResourcesZip(shrunkResources, resourceFiles.resolve("assets"), |
| options.shrunkResources); |
| } |
| logger.fine(String.format("Packing resources finished at %sms", |
| timer.elapsed(TimeUnit.MILLISECONDS))); |
| } catch (Exception e) { |
| logger.log(Level.SEVERE, "Error shrinking resources", e); |
| throw e; |
| } finally { |
| resourceProcessor.shutdown(); |
| } |
| } |
| } |