001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bstefanescu 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.osgi.application; 023 024import java.io.BufferedReader; 025import java.io.BufferedWriter; 026import java.io.File; 027import java.io.FileReader; 028import java.io.FileWriter; 029import java.io.IOException; 030import java.util.ArrayList; 031import java.util.List; 032 033import org.nuxeo.osgi.BundleFile; 034import org.nuxeo.osgi.DirectoryBundleFile; 035import org.nuxeo.osgi.JarBundleFile; 036 037/** 038 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 039 */ 040public class ClassPath implements ClassPathScanner.Callback { 041 042 protected final List<BundleFile> bundles; 043 044 protected final List<BundleFile> jars; 045 046 protected final List<BundleFile> nestedJars; 047 048 protected final SharedClassLoader loader; 049 050 protected final File nestedJARsDir; 051 052 public ClassPath(SharedClassLoader loader, File nestedJARsDir) { 053 bundles = new ArrayList<>(); 054 jars = new ArrayList<>(); 055 nestedJars = new ArrayList<>(); 056 this.loader = loader; 057 this.nestedJARsDir = nestedJARsDir; 058 nestedJARsDir.mkdirs(); 059 } 060 061 public List<BundleFile> getBundles() { 062 return bundles; 063 } 064 065 public List<BundleFile> getJars() { 066 return jars; 067 } 068 069 public List<BundleFile> getNestedJars() { 070 return nestedJars; 071 } 072 073 public void scan(List<File> files, boolean scanForNestedJARs, String[] blacklist) { 074 new ClassPathScanner(this, scanForNestedJARs, blacklist).scan(files); 075 } 076 077 @Override 078 public File handleBundle(BundleFile bf) { 079 bundles.add(bf); 080 loader.addURL(bf.getURL()); 081 return nestedJARsDir; 082 } 083 084 @Override 085 public File handleJar(BundleFile bf) { 086 jars.add(bf); 087 loader.addURL(bf.getURL()); 088 return nestedJARsDir; 089 } 090 091 @Override 092 public void handleNestedJar(BundleFile bf) { 093 nestedJars.add(bf); 094 loader.addURL(bf.getURL()); 095 } 096 097 public void store(File file) throws IOException { 098 BufferedWriter writer = null; 099 try { 100 writer = new BufferedWriter(new FileWriter(file)); 101 for (BundleFile bf : bundles) { 102 writer.append(bf.getFile().getAbsolutePath()); 103 writer.newLine(); 104 } 105 writer.append("#"); 106 writer.newLine(); 107 for (BundleFile bf : jars) { 108 writer.append(bf.getFile().getAbsolutePath()); 109 writer.newLine(); 110 } 111 writer.append("#"); 112 writer.newLine(); 113 for (BundleFile bf : nestedJars) { 114 writer.append(bf.getFile().getAbsolutePath()); 115 writer.newLine(); 116 } 117 } finally { 118 if (writer != null) { 119 writer.close(); 120 } 121 } 122 } 123 124 public void restore(File file) throws IOException { 125 BufferedReader reader = null; 126 try { 127 reader = new BufferedReader(new FileReader(file)); 128 List<BundleFile> list = bundles; 129 String line = null; 130 while (true) { 131 line = reader.readLine(); 132 if (line == null) { 133 break; 134 } 135 if (line.startsWith("#")) { 136 if (list == bundles) { 137 list = jars; 138 } else if (list == jars) { 139 list = nestedJars; 140 } 141 continue; 142 } 143 BundleFile bf = null; 144 File f = new File(line.trim()); 145 if (f.isDirectory()) { 146 bf = new DirectoryBundleFile(f); 147 } else { 148 bf = new JarBundleFile(f); 149 } 150 loader.addURL(bf.getURL()); 151 list.add(bf); 152 } 153 } finally { 154 if (reader != null) { 155 reader.close(); 156 } 157 } 158 } 159 160}