1 /*
2 * $Source: /usr/cvsroot/melati/melati/src/main/java/org/melati/servlet/DefaultFileFormDataAdaptor.java,v $
3 * $Revision: 1.2 $
4 *
5 * Copyright (C) 2000 Myles Chippendale
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * Mylesc Chippendale <mylesc At paneris.org>
42 * http://paneris.org/
43 * 29 Stanley Road, Oxford, OX4 1QY, UK
44 */
45
46 package org.melati.servlet;
47
48 import java.io.File;
49
50 import org.melati.Melati;
51 import org.melati.util.UTF8URLEncoder;
52 import org.melati.util.FileUtils;
53
54 /**
55 * The default way to save an uploaded file to disk.
56 *
57 * We tell it what directory to save it in and the base URL
58 * to that directory.
59 */
60
61 public class DefaultFileFormDataAdaptor extends BaseFileFormDataAdaptor {
62
63 protected Melati melati;
64 protected String uploadDir = null;
65 protected String uploadURL = null;
66 protected boolean makeUnique = true;
67
68 /**
69 * Constructor.
70 *
71 * @param melatiP The current melati
72 * @param uploadDirP The directory to save this file in
73 * @param uploadUrlP A URL pointing to this directory (null if there
74 * isn't an appropriate URL)
75 */
76 public DefaultFileFormDataAdaptor(Melati melatiP, String uploadDirP, String uploadUrlP) {
77 this(melatiP, uploadDirP, uploadUrlP, true);
78 }
79
80 /**
81 * Constructor.
82 *
83 * @param melatiP The current melati
84 * @param uploadDirP The directory to save this file in
85 * @param uploadURLP A URL pointing to this directory (null if there
86 * isn't an appropriate URL)
87 * @param makeUnique Whether we should make sure the new file has a unique
88 * name within the <code>uploadDir</code> directory
89 */
90
91 public DefaultFileFormDataAdaptor(Melati melatiP, String uploadDirP, String uploadURLP,
92 boolean makeUniqueP) {
93 this.melati = melatiP;
94 this.uploadDir = uploadDirP;
95 if (uploadDirP == null) throw new NullPointerException();
96 this.uploadURL = uploadURLP;
97 this.makeUnique = makeUniqueP;
98 }
99
100 protected File calculateLocalFile() {
101 File f = new File(uploadDir,
102 UTF8URLEncoder.encode(field.getUploadedFileName(), melati.getEncoding()));
103 return makeUnique ? FileUtils.withUniqueName(f) : f;
104 }
105
106 protected String calculateURL() {
107 return (uploadURL != null && getFile() != null)
108 ? uploadURL + File.separatorChar + file.getName()
109 : null;
110 }
111 }