content: /*
   * Copyright (C) 2019 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.backup.utils;
  
  import static com.android.server.backup.BackupManagerService.TAG;
  
  import android.util.Slog;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.RandomAccessFile;
  
  /** Utility methods useful for working with backup related RandomAccessFiles. */
  public final class RandomAccessFileUtils {
      private static RandomAccessFile getRandomAccessFile(File file) throws FileNotFoundException {
          return new RandomAccessFile(file, "rwd");
      }
  
      /** Write a boolean to a File by wrapping it using a RandomAccessFile. */
      public static void writeBoolean(File file, boolean b) {
          try (RandomAccessFile af = getRandomAccessFile(file)) {
              af.writeBoolean(b);
          } catch (IOException e) {
              Slog.w(TAG, "Error writing file:" + file.getAbsolutePath(), e);
          }
      }
  
      /** Read a boolean from a File by wrapping it using a RandomAccessFile. */
      public static boolean readBoolean(File file, boolean def) {
          try (RandomAccessFile af = getRandomAccessFile(file)) {
              return af.readBoolean();
          } catch (IOException e) {
              Slog.w(TAG, "Error reading file:" + file.getAbsolutePath(), e);
          }
          return def;
      }
  }
  