| /* |
| * Copyright (C) 2010 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.content.res; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| /** |
| * Class to scan Opaque Binary Blob (OBB) files. Use this to get information |
| * about an OBB file for use in a program via {@link ObbInfo}. |
| */ |
| public class ObbScanner { |
| // Don't allow others to instantiate this class |
| private ObbScanner() {} |
| |
| /** |
| * Scan a file for OBB information. |
| * |
| * @param filePath path to the OBB file to be scanned. |
| * @return ObbInfo object information corresponding to the file path |
| * @throws IllegalArgumentException if the OBB file couldn't be found |
| * @throws IOException if the OBB file couldn't be read |
| */ |
| public static ObbInfo getObbInfo(String filePath) throws IOException { |
| if (filePath == null) { |
| throw new IllegalArgumentException("file path cannot be null"); |
| } |
| |
| final File obbFile = new File(filePath); |
| if (!obbFile.exists()) { |
| throw new IllegalArgumentException("OBB file does not exist: " + filePath); |
| } |
| |
| /* |
| * XXX This will fail to find the real canonical path if bind mounts are |
| * used, but we don't use any bind mounts right now. |
| */ |
| final String canonicalFilePath = obbFile.getCanonicalPath(); |
| |
| ObbInfo obbInfo = new ObbInfo(); |
| obbInfo.filename = canonicalFilePath; |
| getObbInfo_native(canonicalFilePath, obbInfo); |
| |
| return obbInfo; |
| } |
| |
| private native static void getObbInfo_native(String filePath, ObbInfo obbInfo) |
| throws IOException; |
| } |