1 /***
2 * Copyright (c) 2003 held jointly by the individual authors.
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License as published
6 * by the Free Software Foundation; either version 2.1 of the License, or
7 * (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; with out even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this library; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17 *
18 * > http://www.gnu.org/copyleft/lesser.html
19 * > http://www.opensource.org/licenses/lgpl-license.php
20 */
21 package net.mlw.vlh.adapter.util;
22
23 import java.util.Collections;
24 import java.util.Map;
25
26 /*** Replaces "This is a [test]" with "This is a <%=map.get("test")%>"
27 *
28 * @author mwilson
29 */
30 public class TokenReplaceTextManipulator implements TextManipulator
31 {
32 private String startToken = "[";
33 private String endToken = "]";
34 private String nullValue = "";
35
36 /***
37 * @see net.mlw.vlh.adapter.util.TextManipulator#manipulate(java.lang.String, java.lang.Object)
38 */
39 public StringBuffer manipulate(StringBuffer text, Map model)
40 {
41 if (model == null)
42 {
43 model = Collections.EMPTY_MAP;
44 }
45
46
47 for (int i = 0, end = 0, start; ((start = text.toString().indexOf(startToken, end)) >= 0); i++)
48 {
49 end = text.toString().indexOf(endToken, start);
50 String key = text.substring(start + 1, end);
51
52 Object modelValue = model.get(key);
53 text.replace(start, end + 1, (modelValue == null) ? nullValue : modelValue.toString());
54 end -= (key.length() + 2);
55 }
56
57 return text;
58 }
59
60 /***
61 * @param endToken The endToken to set.
62 */
63 public void setEndToken(String endToken)
64 {
65 this.endToken = endToken;
66 }
67
68 /***
69 * @param startToken The startToken to set.
70 */
71 public void setStartToken(String startToken)
72 {
73 this.startToken = startToken;
74 }
75
76 /***
77 * @param nullValue The nullValue to set.
78 */
79 public void setNullValue(String nullValue)
80 {
81 this.nullValue = nullValue;
82 }
83 }