content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * 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.android.apps.common.testing.broker;
  
  import static com.google.common.base.Preconditions.checkArgument;
  import static com.google.common.base.Preconditions.checkNotNull;
  import static java.util.Arrays.asList;
  
  import com.google.android.apps.common.testing.broker.DeviceBrokerAnnotations.AaptPath;
  import com.google.common.collect.Lists;
  import com.google.inject.Provider;
  import java.io.File;
  import java.util.Arrays;
  import java.util.List;
  import java.util.logging.Logger;
  import javax.inject.Inject;
  
  /** Provides functionality available through the aapt tool. */
  class AaptUtil {
  
    private static final int MAX_TRIES = 3;
    private static final Logger logger = Logger.getLogger(AaptUtil.class.getName());
  
    private final Provider<SubprocessCommunicator.Builder> communicatorBuilderProvider;
    private final Provider<AaptDumpPackageLineProcessor> aaptDumpProcessorProvider;
    private final String aaptPath;
  
    @Inject
    AaptUtil(Provider<SubprocessCommunicator.Builder> communicatorBuilderProvider,
        Provider<AaptDumpPackageLineProcessor> aaptDumpProcessorProvider, @AaptPath String aaptPath) {
      this.communicatorBuilderProvider = checkNotNull(communicatorBuilderProvider);
      this.aaptDumpProcessorProvider = checkNotNull(aaptDumpProcessorProvider);
      this.aaptPath = checkNotNull(aaptPath);
      checkArgument(new File(aaptPath).exists(), "aapt not present at: %s", aaptPath);
    }
  
    /**
     * Returns the package name of the provided apk.
     */
    public String getPackageNameFromApk(String apkPath) {
      checkNotNull(apkPath);
      checkArgument(new File(apkPath).exists(), "Apk ain't there: %s", apkPath);
      AaptDumpPackageLineProcessor stdoutProcessor = aaptDumpProcessorProvider.get();
  
      String packageName = null;
      for (int i = 0; i < MAX_TRIES; i++) {
        SubprocessCommunicator.Builder subComBuilder =
            communicatorBuilderProvider.get().withStdoutProcessor(stdoutProcessor);
        makeUncheckedAaptCall(subComBuilder, "dump", "badging", apkPath);
        packageName = stdoutProcessor.getResult();
        if (null != packageName) {
          return packageName;
        }
      }
  
      throw new RuntimeException("aapt output did not contain the package name.");
    }
  
    private void makeUncheckedAaptCall(SubprocessCommunicator.Builder subComBuilder, String... args) {
      List<String> aaptArgs = Lists.newArrayList(aaptPath);
      aaptArgs.addAll(asList(args));
      int exitCode = subComBuilder.withArguments(aaptArgs).build().communicate();
      if (exitCode != 0) {
        logger.warning(String.format("Aapt call failed. Exit code: %s. Args: %s", exitCode,
            Arrays.toString(args)));
      }
    }
  }
  