1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.backup; 18 19 import android.content.Context; 20 import android.os.ParcelFileDescriptor; 21 import android.util.Log; 22 23 import java.io.File; 24 import java.io.FileDescriptor; 25 26 /** 27 * Like FileBackupHelper, but takes absolute paths for the files instead of 28 * subpaths of getFilesDir() 29 * 30 * @hide 31 */ 32 public class AbsoluteFileBackupHelper extends FileBackupHelperBase implements BackupHelper { 33 private static final String TAG = "AbsoluteFileBackupHelper"; 34 private static final boolean DEBUG = false; 35 36 Context mContext; 37 String[] mFiles; 38 AbsoluteFileBackupHelper(Context context, String... files)39 public AbsoluteFileBackupHelper(Context context, String... files) { 40 super(context); 41 42 mContext = context; 43 mFiles = files; 44 } 45 46 /** 47 * Based on oldState, determine which of the files from the application's data directory 48 * need to be backed up, write them to the data stream, and fill in newState with the 49 * state as it exists now. 50 */ performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState)51 public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, 52 ParcelFileDescriptor newState) { 53 // use the file paths as the keys, too 54 performBackup_checked(oldState, data, newState, mFiles, mFiles); 55 } 56 restoreEntity(BackupDataInputStream data)57 public void restoreEntity(BackupDataInputStream data) { 58 if (DEBUG) Log.d(TAG, "got entity '" + data.getKey() + "' size=" + data.size()); 59 String key = data.getKey(); 60 if (isKeyInList(key, mFiles)) { 61 File f = new File(key); 62 writeFile(f, data); 63 } 64 } 65 } 66 67