| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.sling.launcher.app; |
| |
| import java.io.IOException; |
| import java.net.JarURLConnection; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarFile; |
| import java.util.regex.Pattern; |
| |
| |
| /** |
| * The <code>ClassLoaderResourceProvider</code> TODO |
| */ |
| public class ClassLoaderResourceProvider extends ResourceProvider { |
| |
| private final ClassLoader classLoader; |
| |
| public ClassLoaderResourceProvider(ClassLoader classLoader) { |
| this.classLoader = (classLoader != null) |
| ? classLoader |
| : this.getClass().getClassLoader(); |
| } |
| |
| @Override |
| public Iterator<String> getChildren(String path) { |
| List<String> children; |
| |
| URL url = this.classLoader.getResource(path); |
| if (url != null) { |
| Pattern pathPattern = Pattern.compile("^" + path + "/[^/]+$"); |
| |
| children = new ArrayList<String>(); |
| try { |
| URLConnection conn = url.openConnection(); |
| if (conn instanceof JarURLConnection) { |
| JarFile jar = ((JarURLConnection) conn).getJarFile(); |
| Enumeration<JarEntry> entries = jar.entries(); |
| while (entries.hasMoreElements()) { |
| String entry = entries.nextElement().getName(); |
| if (pathPattern.matcher(entry).matches()) { |
| children.add(entry); |
| } |
| } |
| } |
| } catch (IOException ioe) { |
| // ignore for now |
| } |
| } else { |
| children = Collections.emptyList(); |
| } |
| |
| return children.iterator(); |
| } |
| |
| /** |
| * @see org.apache.sling.launcher.app.ResourceProvider#getResource(java.lang.String) |
| */ |
| public URL getResource(String path) { |
| // ensure path |
| if (path == null || path.length() == 0) { |
| return null; |
| } |
| |
| // remove leading slash |
| if (path.charAt(0) == '/') { |
| path = path.substring(1); |
| } |
| |
| return (this.classLoader != null) ? this.classLoader.getResource(path) : null; |
| } |
| |
| } |