1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
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 * William Chesters <williamc@paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.template;
47
48 import java.io.IOException;
49 import java.text.DateFormat;
50
51 import org.melati.Melati;
52 import org.melati.poem.Persistent;
53 import org.melati.util.MelatiWriter;
54 import org.melati.poem.PoemLocale;
55 import org.melati.util.HTMLUtils;
56 import org.melati.util.UTF8URLEncoder;
57
58 /**
59 * A Markup language with syntax similar to HTML.
60 */
61 public abstract class HTMLLikeMarkupLanguage extends AbstractMarkupLanguage
62 implements MarkupLanguage {
63
64 /**
65 * Constructor.
66 */
67 public HTMLLikeMarkupLanguage(String name, Melati melati,
68 TempletLoader templetLoader,
69 PoemLocale locale) {
70 super(name, melati, templetLoader, locale);
71 }
72
73 protected HTMLLikeMarkupLanguage(String name, HTMLLikeMarkupLanguage other) {
74 super(name, other);
75 }
76
77 /**
78 * Render, directly to the output stream, substituting entities for
79 * high value ASCII characters and new line characters.
80 * To avoid the unnecessary overhead of writing to a string and then writing
81 * that string to the output stream we render directly to the output stream.
82 */
83 public void render(String s, MelatiWriter writer) {
84 try {
85 writer.write(HTMLUtils.entitied(s, true, melati.getEncoding(), false));
86 } catch (IOException e) {
87 throw new TemplateIOException("Problem writing " + s, e);
88 }
89
90 }
91
92 /**
93 * {@inheritDoc}
94 * @see org.melati.template.AbstractMarkupLanguage#renderMarkup(java.lang.String, org.melati.util.MelatiWriter)
95 */
96 public void renderMarkup(String s, MelatiWriter writer) {
97 try {
98 writer.write(HTMLUtils.entitied(s, false, melati.getEncoding(), true));
99 } catch (IOException e) {
100 throw new TemplateIOException("Problem writing " + s, e);
101 }
102 }
103
104 /**
105 * Escape a String.
106 *
107 * @param s the String to escape
108 * @return the escaped String
109 */
110 public String escaped(String s) {
111 return HTMLUtils.jsEscaped(s);
112 }
113
114 /**
115 * Get the DisplayString of a <code>Persistent</code> and
116 * escape that using the current locale and a MEDIUM DateFormat.
117 *
118 * See org/melati/admin/SelectionWindowSelection.wm
119 * See org/melati/admin/Update.wm
120 * @param o
121 * @return the escaped DisplayString
122 */
123 public String escaped(Persistent o) {
124 return escaped(o.displayString(locale, DateFormat.MEDIUM));
125 }
126
127 /**
128 * {@inheritDoc}
129 * @see org.melati.template.MarkupLanguage#encoded(java.lang.String)
130 */
131 public String encoded(String s) {
132 return UTF8URLEncoder.encode(s, melati.getEncoding());
133 }
134 /**
135 * {@inheritDoc}
136 * @see org.melati.template.MarkupLanguage#decoded(java.lang.String)
137 */
138 public String decoded(String s) {
139 return UTF8URLEncoder.decode(s, melati.getEncoding());
140 }
141 }
142