Index: mojo/shell/android/apk/src/org/chromium/mojo/shell/FileHelper.java |
diff --git a/mojo/shell/android/apk/src/org/chromium/mojo/shell/FileHelper.java b/mojo/shell/android/apk/src/org/chromium/mojo/shell/FileHelper.java |
deleted file mode 100644 |
index c455251559f35f3d5cece6872935792b9878cedb..0000000000000000000000000000000000000000 |
--- a/mojo/shell/android/apk/src/org/chromium/mojo/shell/FileHelper.java |
+++ /dev/null |
@@ -1,179 +0,0 @@ |
-// Copyright 2014 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.mojo.shell; |
- |
-import android.content.Context; |
-import android.content.pm.PackageInfo; |
-import android.content.pm.PackageManager; |
-import android.util.Log; |
- |
-import java.io.BufferedInputStream; |
-import java.io.BufferedOutputStream; |
-import java.io.File; |
-import java.io.FileInputStream; |
-import java.io.FileNotFoundException; |
-import java.io.FileOutputStream; |
-import java.io.FilenameFilter; |
-import java.io.IOException; |
-import java.io.InputStream; |
-import java.io.OutputStream; |
-import java.util.zip.ZipEntry; |
-import java.util.zip.ZipInputStream; |
- |
-/** |
- * Helper methods for file extraction from APK assets and zip archives. |
- */ |
-class FileHelper { |
- public static final String TAG = "MojoFileHelper"; |
- |
- // Size of the buffer used in streaming file operations. |
- private static final int BUFFER_SIZE = 1024 * 1024; |
- // Prefix used when naming temporary files. |
- private static final String TEMP_FILE_PREFIX = "temp-"; |
- // Prefix used when naming timestamp files. |
- private static final String TIMESTAMP_PREFIX = "asset_timestamp-"; |
- |
- /** |
- * Looks for a timestamp file on disk that indicates the version of the APK that the resource |
- * assets were extracted from. Returns null if a timestamp was found and it indicates that the |
- * resources match the current APK. Otherwise returns a String that represents the filename of a |
- * timestamp to create. |
- */ |
- private static String checkAssetTimestamp(Context context, File outputDir) { |
- PackageManager pm = context.getPackageManager(); |
- PackageInfo pi = null; |
- |
- try { |
- pi = pm.getPackageInfo(context.getPackageName(), 0); |
- } catch (PackageManager.NameNotFoundException e) { |
- return TIMESTAMP_PREFIX; |
- } |
- |
- if (pi == null) { |
- return TIMESTAMP_PREFIX; |
- } |
- |
- String expectedTimestamp = TIMESTAMP_PREFIX + pi.versionCode + "-" + pi.lastUpdateTime; |
- |
- String[] timestamps = outputDir.list(new FilenameFilter() { |
- @Override |
- public boolean accept(File dir, String name) { |
- return name.startsWith(TIMESTAMP_PREFIX); |
- } |
- }); |
- |
- if (timestamps.length != 1) { |
- // If there's no timestamp, nuke to be safe as we can't tell the age of the files. |
- // If there's multiple timestamps, something's gone wrong so nuke. |
- return expectedTimestamp; |
- } |
- |
- if (!expectedTimestamp.equals(timestamps[0])) { |
- return expectedTimestamp; |
- } |
- |
- // Timestamp file is already up-to date. |
- return null; |
- } |
- |
- public static File extractFromAssets(Context context, String assetName, File outputDirectory, |
- boolean useTempFile) throws IOException, FileNotFoundException { |
- String timestampToCreate = null; |
- if (!useTempFile) { |
- timestampToCreate = checkAssetTimestamp(context, outputDirectory); |
- if (timestampToCreate != null) { |
- for (File child : outputDirectory.listFiles()) { |
- deleteRecursively(child); |
- } |
- } |
- } |
- |
- File outputFile; |
- if (useTempFile) { |
- // Make the original filename part of the temp file name. |
- // TODO(ppi): do we need to sanitize the suffix? |
- String suffix = "-" + assetName; |
- outputFile = File.createTempFile(TEMP_FILE_PREFIX, suffix, outputDirectory); |
- } else { |
- outputFile = new File(outputDirectory, assetName); |
- if (outputFile.exists()) { |
- return outputFile; |
- } |
- } |
- |
- BufferedInputStream inputStream = new BufferedInputStream( |
- context.getAssets().open(assetName)); |
- try { |
- writeStreamToFile(inputStream, outputFile); |
- } finally { |
- inputStream.close(); |
- } |
- |
- if (timestampToCreate != null) { |
- try { |
- new File(outputDirectory, timestampToCreate).createNewFile(); |
- } catch (IOException e) { |
- // In the worst case we don't write a timestamp, so we'll re-extract the asset next |
- // time. |
- Log.w(TAG, "Failed to write asset timestamp!"); |
- } |
- } |
- |
- return outputFile; |
- } |
- |
- /** |
- * Extracts the file of the given extension from the archive. Throws FileNotFoundException if no |
- * matching file is found. |
- */ |
- static File extractFromArchive(File archive, String suffixToMatch, |
- File outputDirectory) throws IOException, FileNotFoundException { |
- ZipInputStream zip = new ZipInputStream(new BufferedInputStream(new FileInputStream( |
- archive))); |
- ZipEntry entry; |
- while ((entry = zip.getNextEntry()) != null) { |
- if (entry.getName().endsWith(suffixToMatch)) { |
- // Make the original filename part of the temp file name. |
- // TODO(ppi): do we need to sanitize the suffix? |
- String suffix = "-" + new File(entry.getName()).getName(); |
- File extractedFile = File.createTempFile(TEMP_FILE_PREFIX, suffix, |
- outputDirectory); |
- writeStreamToFile(zip, extractedFile); |
- zip.close(); |
- return extractedFile; |
- } |
- } |
- zip.close(); |
- throw new FileNotFoundException(); |
- } |
- |
- /** |
- * Deletes a file or directory. Directory will be deleted even if not empty. |
- */ |
- static void deleteRecursively(File file) { |
- if (file.isDirectory()) { |
- for (File child : file.listFiles()) { |
- deleteRecursively(child); |
- } |
- } |
- if (!file.delete()) { |
- Log.w(TAG, "Unable to delete file: " + file.getAbsolutePath()); |
- } |
- } |
- |
- private static void writeStreamToFile(InputStream inputStream, File outputFile) |
- throws IOException { |
- byte[] buffer = new byte[BUFFER_SIZE]; |
- OutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile)); |
- try { |
- int read; |
- while ((read = inputStream.read(buffer, 0, BUFFER_SIZE)) > 0) { |
- outputStream.write(buffer, 0, read); |
- } |
- } finally { |
- outputStream.close(); |
- } |
- } |
-} |