| // 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.Preconditions; |
| import com.google.common.base.Stopwatch; |
| import com.google.common.collect.ArrayListMultimap; |
| import com.google.common.collect.Multimap; |
| import com.google.devtools.build.android.Converters.DependencySymbolFileProviderListConverter; |
| import com.google.devtools.build.android.Converters.PathConverter; |
| 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.builder.dependency.SymbolFileProvider; |
| import com.android.builder.internal.SymbolLoader; |
| import com.android.utils.StdLogger; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| import java.util.logging.Logger; |
| |
| |
| /** |
| * Provides an entry point for the compiling resource classes using a custom compiler (simply parse |
| * R.txt and make a jar, which is simpler than parsing R.java and running errorprone, etc.). |
| * |
| * For now, we assume this is only worthwhile for android_binary and not libraries. |
| * |
| * <pre> |
| * Example Usage: |
| * java/com/google/build/android/RClassGeneratorAction\ |
| * --primaryRTxt path/to/R.txt\ |
| * --primaryManifest path/to/AndroidManifest.xml\ |
| * --libraries p/t/1/AndroidManifest.txt:p/t/1/R.txt,\ |
| * p/t/2/AndroidManifest.txt:p/t/2/R.txt\ |
| * --classJarOutput path/to/write/archive_resources.jar |
| * </pre> |
| */ |
| public class RClassGeneratorAction { |
| |
| private static final StdLogger STD_LOGGER = |
| new StdLogger(StdLogger.Level.WARNING); |
| |
| private static final Logger LOGGER = Logger.getLogger(RClassGeneratorAction.class.getName()); |
| |
| /** |
| * Flag specifications for this action. |
| */ |
| public static final class Options extends OptionsBase { |
| |
| @Option(name = "primaryRTxt", |
| defaultValue = "null", |
| converter = PathConverter.class, |
| category = "input", |
| help = "The path to the binary's R.txt file") |
| public Path primaryRTxt; |
| |
| @Option(name = "primaryManifest", |
| defaultValue = "null", |
| converter = PathConverter.class, |
| category = "input", |
| help = "The path to the binary's AndroidManifest.xml file. This helps provide the package.") |
| public Path primaryManifest; |
| |
| @Option(name = "packageForR", |
| defaultValue = "null", |
| category = "config", |
| help = "Custom java package to generate the R class files.") |
| public String packageForR; |
| |
| @Option(name = "libraries", |
| defaultValue = "", |
| converter = DependencySymbolFileProviderListConverter.class, |
| category = "input", |
| help = "R.txt and manifests for the libraries in this binary's deps. We will write " |
| + "class files for the libraries as well. Expected format: lib1/R.txt[:lib2/R.txt]") |
| public List<DependencySymbolFileProvider> libraries; |
| |
| @Option(name = "classJarOutput", |
| defaultValue = "null", |
| converter = PathConverter.class, |
| category = "output", |
| help = "Path for the generated jar of R.class files.") |
| public Path classJarOutput; |
| |
| } |
| |
| public static void main(String[] args) throws Exception { |
| final Stopwatch timer = Stopwatch.createStarted(); |
| OptionsParser optionsParser = OptionsParser.newOptionsParser(Options.class); |
| if (args.length == 1 && args[0].startsWith("@")) { |
| args = Files.readAllLines(Paths.get(args[0].substring(1)), StandardCharsets.UTF_8) |
| .toArray(new String[0]); |
| } |
| |
| optionsParser.parseAndExitUponError(args); |
| Options options = optionsParser.getOptions(Options.class); |
| Preconditions.checkNotNull(options.classJarOutput); |
| final AndroidResourceProcessor resourceProcessor = new AndroidResourceProcessor(STD_LOGGER); |
| try (ScopedTemporaryDirectory scopedTmp = |
| new ScopedTemporaryDirectory("android_res_compile_tmp")) { |
| Path tmp = scopedTmp.getPath(); |
| Path classOutPath = tmp.resolve("compiled_classes"); |
| |
| LOGGER.fine(String.format("Setup finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS))); |
| List<SymbolFileProvider> libraries = new ArrayList<>(); |
| for (DependencySymbolFileProvider library : options.libraries) { |
| libraries.add(library); |
| } |
| // Note that we need to write the R class for the main binary (so proceed even if there |
| // are no libraries). |
| if (options.primaryRTxt != null) { |
| String appPackageName = options.packageForR; |
| if (appPackageName == null) { |
| appPackageName = VariantConfiguration |
| .getManifestPackage(options.primaryManifest.toFile()); |
| } |
| Multimap<String, SymbolLoader> libSymbolMap = ArrayListMultimap.create(); |
| SymbolLoader fullSymbolValues = resourceProcessor.loadResourceSymbolTable( |
| libraries, appPackageName, options.primaryRTxt, libSymbolMap); |
| LOGGER.fine( |
| String.format("Load symbols finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS))); |
| // For now, assuming not used for libraries and setting final access for fields. |
| if (fullSymbolValues != null) { |
| resourceProcessor.writePackageRClasses(libSymbolMap, fullSymbolValues, appPackageName, |
| classOutPath, true /* finalFields */); |
| LOGGER.fine( |
| String.format("Finished R.class at %sms", timer.elapsed(TimeUnit.MILLISECONDS))); |
| } |
| } else { |
| Files.createDirectories(classOutPath); |
| } |
| // We write .class files to temp, then jar them up after (we create a dummy jar, even if |
| // there are no class files). |
| resourceProcessor.createClassJar(classOutPath, options.classJarOutput); |
| LOGGER.fine( |
| String.format("createClassJar finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS))); |
| } finally { |
| resourceProcessor.shutdown(); |
| } |
| LOGGER.fine(String.format("Compile action done in %sms", timer.elapsed(TimeUnit.MILLISECONDS))); |
| } |
| } |