1 package org.apache.maven.shared.io.location;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.net.URL;
23
24 import org.apache.maven.shared.io.logging.MessageHolder;
25
26 /**
27 * classpath resource locator strategy.
28 *
29 */
30 public class ClasspathResourceLocatorStrategy
31 implements LocatorStrategy
32 {
33
34 private String tempFilePrefix = "location.";
35
36 private String tempFileSuffix = ".cpurl";
37
38 private boolean tempFileDeleteOnExit = true;
39
40 /**
41 * Create instance.
42 */
43 public ClasspathResourceLocatorStrategy()
44 {
45 }
46
47 /**
48 * @param tempFilePrefix Prefix.
49 * @param tempFileSuffix Suffix.
50 * @param tempFileDeleteOnExit delete on exit.
51 */
52 public ClasspathResourceLocatorStrategy( String tempFilePrefix, String tempFileSuffix,
53 boolean tempFileDeleteOnExit )
54 {
55 this.tempFilePrefix = tempFilePrefix;
56 this.tempFileSuffix = tempFileSuffix;
57 this.tempFileDeleteOnExit = tempFileDeleteOnExit;
58 }
59
60 /** {@inheritDoc} */
61 public Location resolve( String locationSpecification, MessageHolder messageHolder )
62 {
63 ClassLoader cloader = Thread.currentThread().getContextClassLoader();
64
65 URL resource = cloader.getResource( locationSpecification );
66
67 Location location = null;
68
69 if ( resource != null )
70 {
71 location = new URLLocation( resource, locationSpecification, tempFilePrefix, tempFileSuffix,
72 tempFileDeleteOnExit );
73 }
74 else
75 {
76 messageHolder.addMessage( "Failed to resolve classpath resource: " + locationSpecification
77 + " from classloader: " + cloader );
78 }
79
80 return location;
81 }
82
83 }