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Java > Open Source Codes > org > apache > geronimo > system > serverinfo > DirectoryUtils


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. 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.system.serverinfo;
18
19 import java.io.File JavaDoc;
20 import java.net.JarURLConnection JavaDoc;
21 import java.net.URI JavaDoc;
22 import java.net.URL JavaDoc;
23
24 import org.apache.commons.logging.Log;
25 import org.apache.commons.logging.LogFactory;
26
27 /**
28  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
29  */
30 public final class DirectoryUtils {
31     private static final Log log = LogFactory.getLog(DirectoryUtils.class);
32     private static final File JavaDoc geronimoInstallDirectory;
33
34     static {
35         // guess from the location of the jar
36 URL JavaDoc url = DirectoryUtils.class.getClassLoader().getResource("META-INF/startup-jar");
37
38         File JavaDoc directory = null;
39         if (url != null) {
40             try {
41                 JarURLConnection JavaDoc jarConnection = (JarURLConnection JavaDoc) url.openConnection();
42                 url = jarConnection.getJarFileURL();
43
44                 URI JavaDoc baseURI = new URI JavaDoc(url.toString()).resolve("..");
45                 directory = new File JavaDoc(baseURI);
46             } catch (Exception JavaDoc ignored) {
47                 log.error("Error while determining the geronimo installation directory", ignored);
48             }
49         } else {
50             log.error("Cound not determin the geronimo installation directory, because the startup jar could not be found in the current class loader.");
51         }
52         geronimoInstallDirectory = directory;
53     }
54
55     public static File JavaDoc getGeronimoInstallDirectory() {
56         return geronimoInstallDirectory;
57     }
58 }
59
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