001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.kernel.classloader;
018
019 import java.io.File;
020 import java.io.FileInputStream;
021 import java.io.IOException;
022 import java.net.MalformedURLException;
023 import java.util.jar.Manifest;
024
025 /**
026 * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
027 */
028 public class DirectoryResourceLocation extends AbstractUrlResourceLocation {
029 private final File baseDir;
030 private boolean manifestLoaded = false;
031 private Manifest manifest;
032
033 public DirectoryResourceLocation(File baseDir) throws MalformedURLException {
034 super(baseDir.toURL());
035 this.baseDir = baseDir;
036 }
037
038 public ResourceHandle getResourceHandle(String resourceName) {
039 File file = new File(baseDir, resourceName);
040 if (!file.exists()) {
041 return null;
042 }
043
044 try {
045 ResourceHandle resourceHandle = new DirectoryResourceHandle(resourceName, file, baseDir, getManifestSafe());
046 return resourceHandle;
047 } catch (MalformedURLException e) {
048 return null;
049 }
050 }
051
052 public Manifest getManifest() throws IOException {
053 if (!manifestLoaded) {
054 File manifestFile = new File(baseDir, "META-INF/MANIFEST.MF");
055
056 if (manifestFile.isFile() && manifestFile.canRead()) {
057 FileInputStream in = null;
058 try {
059 in = new FileInputStream(manifestFile);
060 manifest = new Manifest(in);
061 } finally {
062 IoUtil.close(in);
063 }
064 }
065 manifestLoaded = true;
066 }
067 return manifest;
068 }
069
070 private Manifest getManifestSafe() {
071 Manifest manifest = null;
072 try {
073 manifest = getManifest();
074 } catch (IOException e) {
075 // ignore
076 }
077 return manifest;
078 }
079 }