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1   /*
2    * $Source: /usr/cvsroot/jammyjoes/src/org/paneris/jammyjoes/servlet/JammyjoesFileDataAdaptor.java,v $
3    * $Revision: 1.5 $
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@paneris.org>
42   *     http://paneris.org/
43   *     29 Stanley Road, Oxford, OX4 1QY, UK
44   */
45  
46  /**
47   * Interface for a file uploaded from a HTML form 
48   */
49  
50  package org.paneris.jammyjoes.servlet;
51  
52  import java.io.File;
53  
54  import org.melati.servlet.BaseFileDataAdaptor;
55  import org.melati.util.FileUtils;
56  import org.melati.util.UTF8URLEncoder;
57  
58  /**
59   * The default way to save an uploaded file to disk - we tell
60   * it what directory to save it in and the base URL to that
61   * directory
62   * 
63   */
64  
65  public class JammyjoesFileDataAdaptor extends BaseFileDataAdaptor {
66  
67    private String fieldName;
68  
69    protected String uploadDir = null;
70    protected String uploadURL = null;
71    protected boolean makeUnique = true;
72  
73    /**
74     * Constructor
75     * 
76     * @param uploadDir The directory to save this file in
77     * @param uploadURL A URL pointing to this directory (null if there
78     *                  isn't an appropriate URL)
79     */
80  
81    public JammyjoesFileDataAdaptor(String uploadDir, String uploadURL, String field) {
82      this.uploadDir = uploadDir;
83      this.uploadURL = uploadURL;
84      fieldName = field;
85    }
86  
87    /**
88     * Constructor
89     * 
90     * @param uploadDir The directory to save this file in
91     * @param uploadURL A URL pointing to this directory  (null if there
92     *                  isn't an appropriate URL)
93     * @param makeUnique Whether we should make sure the new file has a unique
94     *                   name within the <code>uploadDir</code> directory
95     */
96  
97    public JammyjoesFileDataAdaptor(String uploadDir, String uploadURL,
98                                  boolean makeUnique, String field) {
99      this.uploadDir = uploadDir;
100     this.uploadURL = uploadURL;
101     this.makeUnique = makeUnique;
102     fieldName = field;
103   }
104 
105   protected File calculateLocalFile() {
106     File f = new File(uploadDir + bigOrSmall(),
107                       UTF8URLEncoder.encode(field.getUploadedFileName()));
108     return makeUnique ? FileUtils.withUniqueName(f) : f;
109   }
110 
111   protected String calculateURL() {
112     return uploadURL + bigOrSmall() + file.getName();
113   }
114   
115   private String bigOrSmall() {
116     String bit = "small";
117     if (fieldName.equals("picture2")) bit = "big";
118     return "/" + bit + "/";
119   }
120     
121 }