| /* |
| * Copyright (C) 2016 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.pm.split; |
| |
| import static android.content.pm.PackageManager.INSTALL_FAILED_INVALID_APK; |
| import static android.content.pm.PackageManager.INSTALL_PARSE_FAILED_NOT_APK; |
| |
| import android.content.pm.PackageParser; |
| import android.content.pm.PackageParser.PackageParserException; |
| import android.content.pm.PackageParser.ParseFlags; |
| import android.content.res.ApkAssets; |
| import android.content.res.AssetManager; |
| import android.os.Build; |
| |
| import com.android.internal.util.ArrayUtils; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.IOException; |
| |
| /** |
| * Loads the base and split APKs into a single AssetManager. |
| * @hide |
| */ |
| public class DefaultSplitAssetLoader implements SplitAssetLoader { |
| private final String mBaseCodePath; |
| private final String[] mSplitCodePaths; |
| private final @ParseFlags int mFlags; |
| private AssetManager mCachedAssetManager; |
| |
| public DefaultSplitAssetLoader(PackageParser.PackageLite pkg, @ParseFlags int flags) { |
| mBaseCodePath = pkg.baseCodePath; |
| mSplitCodePaths = pkg.splitCodePaths; |
| mFlags = flags; |
| } |
| |
| private static ApkAssets loadApkAssets(String path, @ParseFlags int flags) |
| throws PackageParserException { |
| if ((flags & PackageParser.PARSE_MUST_BE_APK) != 0 && !PackageParser.isApkPath(path)) { |
| throw new PackageParserException(INSTALL_PARSE_FAILED_NOT_APK, |
| "Invalid package file: " + path); |
| } |
| |
| try { |
| return ApkAssets.loadFromPath(path); |
| } catch (IOException e) { |
| throw new PackageParserException(INSTALL_FAILED_INVALID_APK, |
| "Failed to load APK at path " + path, e); |
| } |
| } |
| |
| @Override |
| public AssetManager getBaseAssetManager() throws PackageParserException { |
| if (mCachedAssetManager != null) { |
| return mCachedAssetManager; |
| } |
| |
| ApkAssets[] apkAssets = new ApkAssets[(mSplitCodePaths != null |
| ? mSplitCodePaths.length : 0) + 1]; |
| |
| // Load the base. |
| int splitIdx = 0; |
| apkAssets[splitIdx++] = loadApkAssets(mBaseCodePath, mFlags); |
| |
| // Load any splits. |
| if (!ArrayUtils.isEmpty(mSplitCodePaths)) { |
| for (String apkPath : mSplitCodePaths) { |
| apkAssets[splitIdx++] = loadApkAssets(apkPath, mFlags); |
| } |
| } |
| |
| AssetManager assets = new AssetManager(); |
| assets.setConfiguration(0, 0, null, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| Build.VERSION.RESOURCES_SDK_INT); |
| assets.setApkAssets(apkAssets, false /*invalidateCaches*/); |
| |
| mCachedAssetManager = assets; |
| return mCachedAssetManager; |
| } |
| |
| @Override |
| public AssetManager getSplitAssetManager(int splitIdx) throws PackageParserException { |
| return getBaseAssetManager(); |
| } |
| |
| @Override |
| public void close() throws Exception { |
| IoUtils.closeQuietly(mCachedAssetManager); |
| } |
| } |