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.android.server.pm;
  
  import android.util.Slog;
  
  import com.android.internal.util.ArrayUtils;
  
  import java.io.BufferedOutputStream;
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.nio.ByteBuffer;
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  import java.util.Comparator;
  import java.util.function.Consumer;
  
  public class ShortcutDumpFiles {
      private static final String TAG = ShortcutService.TAG;
      private static final boolean DEBUG = ShortcutService.DEBUG;
      private final ShortcutService mService;
  
      public ShortcutDumpFiles(ShortcutService service) {
          mService = service;
      }
  
      public boolean save(String filename, Consumer<PrintWriter> dumper) {
          try {
              final File directory = mService.getDumpPath();
              directory.mkdirs();
              if (!directory.exists()) {
                  Slog.e(TAG, "Failed to create directory: " + directory);
                  return false;
              }
  
              final File path = new File(directory, filename);
  
              if (DEBUG) {
                  Slog.d(TAG, "Dumping to " + path);
              }
  
              try (PrintWriter pw = new PrintWriter(new BufferedOutputStream(
                      new FileOutputStream(path)))) {
                  dumper.accept(pw);
              }
              return true;
          } catch (RuntimeException|IOException e) {
              Slog.w(TAG, "Failed to create dump file: " + filename, e);
              return false;
          }
      }
  
      public boolean save(String filename, byte[] utf8bytes) {
          return save(filename, pw -> pw.println(StandardCharsets.UTF_8.decode(
                  ByteBuffer.wrap(utf8bytes)).toString()));
      }
  
      public void dumpAll(PrintWriter pw) {
          try {
              final File directory = mService.getDumpPath();
              final File[] files = directory.listFiles(f -> f.isFile());
              if (!directory.exists() || ArrayUtils.isEmpty(files)) {
                  pw.print("  No dump files found.");
                  return;
              }
              Arrays.sort(files, Comparator.comparing(f -> f.getName()));
  
              for (File path : files) {
                  pw.print("*** Dumping: ");
                  pw.println(path.getName());
  
                  pw.print("mtime: ");
                  pw.println(ShortcutService.formatTime(path.lastModified()));
  
                  try (BufferedReader reader = new BufferedReader(new InputStreamReader(
                          new FileInputStream(path)))) {
                      String line = null;
                      while ((line = reader.readLine()) != null) {
                          pw.println(line);
                      }
                  }
              }
          } catch (RuntimeException|IOException e) {
              Slog.w(TAG, "Failed to print dump files", e);
          }
      }
  }
  