| /* |
| * Copyright (C) 2012 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 com.android.inputmethod.latin.makelabel; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URL; |
| import java.net.URLDecoder; |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarFile; |
| |
| public class JarUtils { |
| private static final String MANIFEST = "META-INF/MANIFEST.MF"; |
| |
| private JarUtils() { |
| // This utility class is not publicly instantiable. |
| } |
| |
| public static JarFile getJarFile(final ClassLoader loader) { |
| final URL resUrl = loader.getResource(MANIFEST); |
| if (!resUrl.getProtocol().equals("jar")) { |
| throw new RuntimeException("Should run as jar"); |
| } |
| final String path = resUrl.getPath(); |
| if (!path.startsWith("file:")) { |
| throw new RuntimeException("Unknown jar path: " + path); |
| } |
| final String jarPath = path.substring("file:".length(), path.indexOf('!')); |
| try { |
| return new JarFile(URLDecoder.decode(jarPath, "UTF-8")); |
| } catch (UnsupportedEncodingException e) { |
| } catch (IOException e) { |
| } |
| return null; |
| } |
| |
| public static InputStream openResource(final String name) { |
| return JarUtils.class.getResourceAsStream("/" + name); |
| } |
| |
| public interface JarFilter { |
| public boolean accept(String dirName, String name); |
| } |
| |
| public static ArrayList<String> getNameListing(final JarFile jar, final JarFilter filter) { |
| final ArrayList<String> result = new ArrayList<String>(); |
| final Enumeration<JarEntry> entries = jar.entries(); |
| while (entries.hasMoreElements()) { |
| final JarEntry entry = entries.nextElement(); |
| final String path = entry.getName(); |
| final int pos = path.lastIndexOf('/'); |
| final String dirName = (pos >= 0) ? path.substring(0, pos) : ""; |
| final String name = (pos >= 0) ? path.substring(pos + 1) : path; |
| if (filter.accept(dirName, name)) { |
| result.add(path); |
| } |
| } |
| return result; |
| } |
| |
| public static ArrayList<String> getNameListing(final JarFile jar, final String filterName) { |
| return getNameListing(jar, new JarFilter() { |
| @Override |
| public boolean accept(final String dirName, final String name) { |
| return name.equals(filterName); |
| } |
| }); |
| } |
| } |