org.apache.xbean.finder.archive.ClasspathArchive Maven / Gradle / Ivy
/**
* 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.xbean.finder.archive;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Supports JarArchive and FileArchive URLs
*
* @version $Rev$ $Date$
*/
public class ClasspathArchive extends CompositeArchive {
private final List urls = new ArrayList();
private final ClassLoader loader;
public ClasspathArchive(ClassLoader loader, URL... urls) {
this(loader, Arrays.asList(urls));
}
public ClasspathArchive(ClassLoader loader, Iterable urls) {
super(archives(loader, urls));
this.loader = loader;
}
public static List archives(ClassLoader loader, Iterable urls) {
List archives = new ArrayList();
for (URL location : urls) {
try {
archives.add(archive(loader, location));
} catch (Exception e) {
// TODO This is what we did before, so not too urgent to change, but not ideal
e.printStackTrace();
}
}
return archives;
}
public static Archive archive(ClassLoader loader, URL location) {
if (location.getProtocol().equals("jar")) {
return new JarArchive(loader, location);
} else if (location.getProtocol().equals("file")) {
try {
// See if it's actually a jar
URL jarUrl = new URL("jar", "", location.toExternalForm() + "!/");
JarURLConnection juc = (JarURLConnection) jarUrl.openConnection();
juc.getJarFile();
return new JarArchive(loader, jarUrl);
} catch (IOException e) {
return new FileArchive(loader, location);
}
}
throw new UnsupportedOperationException("unsupported archive type: " + location);
}
public static List archives(ClassLoader loader, URL... urls) {
return archives(loader, Arrays.asList(urls));
}
@Override
public InputStream getBytecode(String className) throws IOException, ClassNotFoundException {
int pos = className.indexOf("<");
if (pos > -1) {
className = className.substring(0, pos);
}
pos = className.indexOf(">");
if (pos > -1) {
className = className.substring(0, pos);
}
if (!className.endsWith(".class")) {
className = className.replace('.', '/') + ".class";
}
URL resource = loader.getResource(className);
if (resource != null) return resource.openStream();
throw new ClassNotFoundException(className);
}
@Override
public Class loadClass(String className) throws ClassNotFoundException {
return loader.loadClass(className);
}
}