1 /* ====================================================================
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>;.
53 *
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
57 */
58
59 package net.sourceforge.jane;
60
61 import java.io.File;
62 import java.io.FileInputStream;
63 import java.io.InputStream;
64 import java.io.IOException;
65
66 /***
67 * An {@link ArtifactPath} that represents a directory structure.
68 */
69 public class DirectoryArtifactPath extends ArtifactPath
70 {
71
72 /***
73 * Create a new <code>DirectoryArtifactPath</code>.
74 */
75 public DirectoryArtifactPath(String aPath)
76 throws InvalidPathException
77 {
78 super(aPath);
79 File dir = new File(path);
80 if (!dir.exists() || !dir.isDirectory()) {
81 throw new InvalidPathException(path);
82 }
83 }
84
85 /***
86 * Returns the path to the given artifact.
87 */
88 public String getPathToArtifact(String name)
89 {
90 File f = getArtifactFile(name);
91 return f != null ? f.getAbsolutePath() : null;
92 }
93
94 /***
95 * Find the specified artifact.
96 */
97 public InputStream findArtifact(String name)
98 throws IOException
99 {
100 File f = getArtifactFile(name);
101 return f != null ? new FileInputStream(f) : null;
102 }
103
104 /***
105 * Return a file for this artifact, or <code>null</code> if the file does not exist.
106 */
107 protected File getArtifactFile(String name)
108 {
109 File f = new File(path, name);
110 if (f.exists())
111 return f;
112 else
113 return null;
114 }
115
116 }
117
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