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/**
 * 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.classloader;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

/**
 * @author Dain Sundstrom
 */
public class JarResourceLocation extends AbstractUrlResourceLocation {

	private final JarFile jarFile;

	public JarResourceLocation(URL codeSource, JarFile jarFile) {
		super(codeSource);
		if (jarFile == null) {
			throw new IllegalArgumentException("Illegal null jarFile specified for JarResourceLocation");
		}
		this.jarFile = jarFile;
	}

	public ResourceHandle getResourceHandle(String resourceName) {
		JarEntry jarEntry = jarFile.getJarEntry(resourceName);
		if (jarEntry != null) {
			try {
				return new JarResourceHandle(jarFile, jarEntry, getCodeSource());
			} catch (MalformedURLException e) {
			}
		}
		return null;
	}

	public Manifest getManifest() throws IOException {
		return jarFile.getManifest();
	}

	public void close() {
		IoUtil.close(jarFile);
	}
}