001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.java.bytecode; 021 022 import org.codehaus.classworlds.ClassRealm; 023 import org.codehaus.classworlds.ClassWorld; 024 import org.slf4j.Logger; 025 import org.slf4j.LoggerFactory; 026 027 import java.io.File; 028 import java.net.MalformedURLException; 029 import java.net.URL; 030 import java.util.Arrays; 031 import java.util.Collection; 032 033 public final class ClassworldsClassLoader { 034 private static final Logger LOG = LoggerFactory.getLogger(ClassworldsClassLoader.class); 035 036 private ClassworldsClassLoader() { 037 // only static methods 038 } 039 040 public static ClassLoader create(File bytecodeFileOrDirectory) { 041 return create(Arrays.asList(bytecodeFileOrDirectory)); 042 } 043 044 public static ClassLoader create(Collection<File> bytecodeFilesOrDirectories) { 045 try { 046 ClassWorld world = new ClassWorld(); 047 ClassRealm realm = world.newRealm("squid.project"); 048 049 for (File bytecode : bytecodeFilesOrDirectories) { 050 URL url = getURL(bytecode); 051 if (bytecode.isFile() && url.toString().endsWith(".class")) { 052 // CLASS file is not supported by ClassWorlds 053 //TODO log warning 054 055 } else { 056 // JAR file or directory 057 realm.addConstituent(url); 058 } 059 } 060 061 if (LOG.isDebugEnabled()) { 062 LOG.debug("----- Classpath analyzed by Squid:"); 063 for (URL url : realm.getConstituents()) { 064 LOG.debug(url.toString()); 065 } 066 LOG.debug("-----"); 067 } 068 069 return realm.getClassLoader(); 070 071 } catch (Exception e) { 072 throw new IllegalStateException("Can not create classloader", e); 073 } 074 } 075 076 private static URL getURL(File file) throws MalformedURLException { 077 URL url = file.toURI().toURL(); 078 if (file.isDirectory() && !url.toString().endsWith("/")) { 079 /* 080 See ClassRealm javadoc : 081 If the constituent is a directory, then the URL must end with a slash (/). Otherwise the constituent will be treated as a JAR file. 082 */ 083 url = new URL(url.toString() + "/"); 084 } 085 return url; 086 } 087 }