64 lines
2.1 KiB
Java
64 lines
2.1 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.content.res;
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import java.io.File;
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import java.io.IOException;
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/**
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* Class to scan Opaque Binary Blob (OBB) files. Use this to get information
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* about an OBB file for use in a program via {@link ObbInfo}.
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*/
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public class ObbScanner {
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// Don't allow others to instantiate this class
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private ObbScanner() {}
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/**
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* Scan a file for OBB information.
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*
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* @param filePath path to the OBB file to be scanned.
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* @return ObbInfo object information corresponding to the file path
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* @throws IllegalArgumentException if the OBB file couldn't be found
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* @throws IOException if the OBB file couldn't be read
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*/
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public static ObbInfo getObbInfo(String filePath) throws IOException {
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if (filePath == null) {
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throw new IllegalArgumentException("file path cannot be null");
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}
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final File obbFile = new File(filePath);
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if (!obbFile.exists()) {
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throw new IllegalArgumentException("OBB file does not exist: " + filePath);
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}
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/*
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* XXX This will fail to find the real canonical path if bind mounts are
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* used, but we don't use any bind mounts right now.
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*/
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final String canonicalFilePath = obbFile.getCanonicalPath();
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ObbInfo obbInfo = new ObbInfo();
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obbInfo.filename = canonicalFilePath;
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getObbInfo_native(canonicalFilePath, obbInfo);
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return obbInfo;
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}
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private native static void getObbInfo_native(String filePath, ObbInfo obbInfo)
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throws IOException;
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}
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