Index: webapk/shell_apk/src/org/chromium/webapk/shell_apk/DexLoader.java |
diff --git a/webapk/shell_apk/src/org/chromium/webapk/shell_apk/DexLoader.java b/webapk/shell_apk/src/org/chromium/webapk/shell_apk/DexLoader.java |
deleted file mode 100644 |
index bbad6365b184c83b6c222ef490939f01cf61184d..0000000000000000000000000000000000000000 |
--- a/webapk/shell_apk/src/org/chromium/webapk/shell_apk/DexLoader.java |
+++ /dev/null |
@@ -1,147 +0,0 @@ |
-// Copyright 2016 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-package org.chromium.webapk.shell_apk; |
- |
-import android.content.Context; |
-import android.util.Log; |
- |
-import dalvik.system.BaseDexClassLoader; |
- |
-import java.io.File; |
-import java.io.FileOutputStream; |
-import java.io.InputStream; |
- |
-/** |
- * Creates ClassLoader for .dex file in a remote Context's APK. |
- */ |
-public class DexLoader { |
- private static final int BUFFER_SIZE = 16 * 1024; |
- private static final String TAG = "cr.DexLoader"; |
- |
- /** |
- * Creates ClassLoader for .dex file in {@link remoteContext}'s APK. |
- * @param remoteContext The context with the APK with the .dex file. |
- * @param dexName The name of the .dex file in the APK. |
- * @param canaryClassName Name of class in the .dex file. Used for testing the ClassLoader |
- * before returning it. |
- * @param remoteDexFile Location of already extracted .dex file from APK. |
- * @param localDexDir Writable directory for caching data to speed up future calls to |
- * {@link #load()}. |
- * @return The ClassLoader. Returns null on an error. |
- */ |
- public static ClassLoader load(Context remoteContext, String dexName, String canaryClassName, |
- File remoteDexFile, File localDexDir) { |
- File localDexFile = new File(localDexDir, dexName); |
- |
- // If {@link localDexFile} exists, technique #2 was previously used to create the |
- // ClassLoader. Skip right to the technique which worked last time. |
- if (remoteDexFile != null && remoteDexFile.exists() && !localDexFile.exists()) { |
- // Technique #1: At startup, Chrome code extracts the .dex file from its assets and |
- // guesses where DexClassLoader searches for the odex by default and puts the odex |
- // there. Try using the odex from Chrome's data directory. |
- ClassLoader loader = tryCreatingClassLoader(canaryClassName, remoteDexFile, null); |
- if (loader != null) { |
- return loader; |
- } |
- } |
- |
- // Technique #2: Extract the .dex file from the remote context's APK. Create a |
- // ClassLoader from the extracted file. |
- if (!localDexFile.exists() || localDexFile.length() == 0) { |
- localDexDir.mkdirs(); |
- |
- InputStream inputStream; |
- try { |
- inputStream = remoteContext.getAssets().open(dexName); |
- } catch (Exception e) { |
- Log.w(TAG, "Could not extract dex from assets"); |
- e.printStackTrace(); |
- return null; |
- } |
- copyFromInputStream(inputStream, localDexFile); |
- } |
- |
- File localOptimizedDir = new File(localDexDir, "optimized"); |
- localOptimizedDir.mkdirs(); |
- |
- return tryCreatingClassLoader(canaryClassName, localDexFile, localOptimizedDir); |
- } |
- |
- /** |
- * Deletes any files cached by {@link #load()}. |
- * @param localDexDir Cache directory passed to {@link #load()}. |
- */ |
- public static void deleteCachedDexes(File localDexDir) { |
- deleteChildren(localDexDir); |
- } |
- |
- /** |
- * Deletes all of a directory's children including subdirectories. |
- * @param parentDir Directory whose children should be deleted. |
- */ |
- private static void deleteChildren(File parentDir) { |
- if (!parentDir.isDirectory()) { |
- return; |
- } |
- |
- File[] files = parentDir.listFiles(); |
- if (files != null) { |
- for (File file : files) { |
- deleteChildren(file); |
- if (!file.delete()) { |
- Log.e(TAG, "Could not delete " + file.getPath()); |
- } |
- } |
- } |
- } |
- |
- /** |
- * Copies an InputStream to a file. |
- * @param inputStream |
- * @param outFile The destination file. |
- */ |
- private static void copyFromInputStream(InputStream inputStream, File outFile) { |
- try (FileOutputStream outputStream = new FileOutputStream(outFile)) { |
- byte[] buffer = new byte[BUFFER_SIZE]; |
- int count = 0; |
- while ((count = inputStream.read(buffer, 0, BUFFER_SIZE)) != -1) { |
- outputStream.write(buffer, 0, count); |
- } |
- } catch (Exception e) { |
- } finally { |
- try { |
- inputStream.close(); |
- } catch (Exception e) { |
- } |
- } |
- } |
- |
- /** |
- * Tries to create ClassLoader with the given .dex file and optimized dex directory. |
- * @param canaryClassName Name of class in the .dex file. Used for testing the ClassLoader |
- * before returning it. |
- * @param dexFile .dex file to create ClassLoader for. |
- * @param optimizedDir Directory for storing the optimized dex file. If null, an OS-defined |
- * path based on {@link dexFile} is used. |
- * @return The ClassLoader. Returns null on an error. |
- */ |
- private static ClassLoader tryCreatingClassLoader( |
- String canaryClassName, File dexFile, File optimizedDir) { |
- try { |
- ClassLoader loader = new BaseDexClassLoader( |
- dexFile.getPath(), optimizedDir, null, ClassLoader.getSystemClassLoader()); |
- // Loading {@link canaryClassName} will throw an exception if the .dex file cannot be |
- // loaded. |
- loader.loadClass(canaryClassName); |
- return loader; |
- } catch (Exception e) { |
- String optimizedDirPath = (optimizedDir == null) ? null : optimizedDir.getPath(); |
- Log.w(TAG, "Could not load dex from " + dexFile.getPath() + " with optimized directory " |
- + optimizedDirPath); |
- e.printStackTrace(); |
- return null; |
- } |
- } |
-} |