| /* |
| * 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.testing.teleporter.client; |
| |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.Enumeration; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarFile; |
| |
| /** Finds and visits resources provided by ClassLoaders based |
| * on their path. If a path points to a folder, its child |
| * resources are also visited. Currently works for the "file:" |
| * and "jar:" resource protocols. |
| */ |
| public class ClassResourceVisitor { |
| |
| private final Class<?> clazz; |
| private final String path; |
| |
| static interface Processor { |
| void process(String resourcePath, InputStream resourceStream) throws IOException; |
| } |
| |
| /** Visit the resources provided by clazz's ClassLoader, |
| * based on the supplied path. |
| * |
| * @param clazz |
| * @param path If that points to a folder, it is visited recursively |
| */ |
| public ClassResourceVisitor(Class<?> clazz, String path) { |
| this.clazz = clazz; |
| this.path = path; |
| } |
| |
| public void visit(Processor p) throws IOException { |
| final URL resourceURL = clazz.getResource(path); |
| if(resourceURL == null) { |
| return; |
| } |
| |
| final String protocol = resourceURL.getProtocol(); |
| |
| if("file".equals(protocol)) { |
| // Get base path and remove ending slash |
| String basePath = clazz.getResource("/").getPath(); |
| basePath = basePath.substring(0, basePath.length() - 1); |
| processFile(basePath, new File(resourceURL.getPath()), p); |
| |
| } else if("jar".equals(protocol)) { |
| // Jar entries use relative paths |
| final String rPath = path.startsWith("/") ? path.substring(1) : path; |
| final String jarFilePath = resourceURL.getPath().split("!")[0].substring("file:".length()); |
| final JarFile jar = new JarFile(jarFilePath); |
| try { |
| final Enumeration<JarEntry> entries = jar.entries(); |
| while (entries.hasMoreElements()) { |
| final JarEntry e = entries.nextElement(); |
| if(!e.isDirectory() && jarEntryMatches(rPath, e.getName())) { |
| final InputStream is = jar.getInputStream(e); |
| try { |
| p.process("/" + e.getName(), is); |
| } finally { |
| is.close(); |
| } |
| } |
| } |
| } finally { |
| jar.close(); |
| } |
| |
| |
| } else { |
| throw new IllegalArgumentException("Unkown protocol " + protocol); |
| } |
| } |
| |
| /** True if the entry part matches the given path. |
| * @param givenPath if it ends with / it's considered a folder name, otherwise |
| * we check for an exact match |
| * @param entryPath the path of the jar entry to check |
| * @return true if there's a match |
| */ |
| private boolean jarEntryMatches(String givenPath, String entryPath) { |
| if(givenPath.endsWith("/")) { |
| return entryPath.startsWith(givenPath); |
| } else { |
| return entryPath.equals(givenPath); |
| } |
| } |
| |
| private void processFile(String basePath, File f, Processor p) throws IOException { |
| if(f.isDirectory()) { |
| final String [] names = f.list(); |
| if(names != null) { |
| for(String name : names) { |
| processFile(basePath, new File(f, name), p); |
| } |
| } |
| } else { |
| final InputStream is = new BufferedInputStream(new FileInputStream(f)); |
| try { |
| p.process(f.getAbsolutePath().substring(basePath.length()), is); |
| } finally { |
| is.close(); |
| } |
| } |
| } |
| } |