/* * Copyright (C) 2009 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 android.backup; import android.content.Context; import android.os.ParcelFileDescriptor; import android.util.Log; import java.io.File; import java.io.FileDescriptor; /** @hide */ public class FileBackupHelper { private static final String TAG = "FileBackupHelper"; Context mContext; String mKeyPrefix; public FileBackupHelper(Context context) { mContext = context; } public FileBackupHelper(Context context, String keyPrefix) { mContext = context; mKeyPrefix = keyPrefix; } /** * Based on oldState, determine which of the files from the application's data directory * need to be backed up, write them to the data stream, and fill in newState with the * state as it exists now. */ public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState, String[] files) { // file names File base = mContext.getFilesDir(); final int N = files.length; String[] fullPaths = new String[N]; for (int i=0; ioriginal; * otherwise, return original. */ static String[] makeKeys(String keyPrefix, String[] original) { if (keyPrefix != null) { String[] keys; final int N = original.length; keys = new String[N]; for (int i=0; i