1 /**
2 *
3 * Copyright 2005 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.geronimo.kernel.classloader;
18
19 import java.io.File;
20 import java.io.FileInputStream;
21 import java.io.IOException;
22 import java.net.MalformedURLException;
23 import java.util.jar.Manifest;
24
25 /**
26 * @version $Rev: 410741 $ $Date: 2006-05-31 21:35:48 -0700 (Wed, 31 May 2006) $
27 */
28 public class DirectoryResourceLocation extends AbstractUrlResourceLocation {
29 private final File baseDir;
30 private boolean manifestLoaded = false;
31 private Manifest manifest;
32
33 public DirectoryResourceLocation(File baseDir) throws MalformedURLException {
34 super(baseDir.toURL());
35 this.baseDir = baseDir;
36 }
37
38 public ResourceHandle getResourceHandle(String resourceName) {
39 File file = new File(baseDir, resourceName);
40 if (!file.exists()) {
41 return null;
42 }
43
44 try {
45 ResourceHandle resourceHandle = new DirectoryResourceHandle(resourceName, file, baseDir, getManifestSafe());
46 return resourceHandle;
47 } catch (MalformedURLException e) {
48 return null;
49 }
50 }
51
52 public Manifest getManifest() throws IOException {
53 if (!manifestLoaded) {
54 File manifestFile = new File(baseDir, "META-INF/MANIFEST.MF");
55
56 if (manifestFile.isFile() && manifestFile.canRead()) {
57 FileInputStream in = null;
58 try {
59 in = new FileInputStream(manifestFile);
60 manifest = new Manifest(in);
61 } finally {
62 IoUtil.close(in);
63 }
64 }
65 manifestLoaded = true;
66 }
67 return manifest;
68 }
69
70 private Manifest getManifestSafe() {
71 Manifest manifest = null;
72 try {
73 manifest = getManifest();
74 } catch (IOException e) {
75
76 }
77 return manifest;
78 }
79 }