/[ascend]/trunk/tools/mediawiki/ashighlight.php
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Contents of /trunk/tools/mediawiki/ashighlight.php

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Revision 1724 - (show annotations) (download)
Sat Jan 12 22:41:20 2008 UTC (15 years, 1 month ago) by jpye
File size: 4940 byte(s)
Added 'return TRUE' to ashighlightLoadMessages, following feedback at 
http://www.mediawiki.org/wiki/Extension_talk:ASHighlight.
1 <?php
2 /**
3 * Syntax-highlight extension for MediaWiki 1.9 using Andre Simon's 'highlight'
4 * Copyright (C) 2007 John Pye <john@curioussymbols.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 * http://www.gnu.org/copyleft/gpl.html
20 */
21
22 /**
23 * @addtogroup Extensions
24 * @author John Pye
25 *
26 * This extension wraps the Andre Simon highlighter: http://www.andre-simon.de/
27 *
28 * Modelled closely on the sourcecode for the GeSHi highlighter for
29 * mediawiki, by Brion Vibber http://www.mediawiki.org/
30 *
31 * A language is specified like: <source lang="c">void main() {}</source>
32 * If you forget, or give an unsupported value, the extension spits out
33 * some help text and a list of all supported languages.
34 */
35
36 if( !defined( 'MEDIAWIKI' ) )
37 die();
38
39 $wgExtensionFunctions[] = 'ashighlightSetup';
40 $wgExtensionCredits['parserhook']['ashighlight'] = array(
41 'name' => 'ashighlight',
42 'author' => 'John Pye',
43 'description' => "Provides syntax highlighting using [http://www.andre-simon.de/ Andre Simon's 'highlight']",
44 );
45 $wgHooks['LoadAllMessages'][] = 'ashighlightLoadMessages';
46
47 $ASH_CSS=array();
48
49 function ashighlightSetup() {
50 global $wgParser;
51 $wgParser->setHook( 'source', 'ashighlightHook' );
52 $wgHooks['SkinTemplateSetupPageCss'][]='ashighlightCss';
53 }
54
55 function ashighlightLoadMessages() {
56 static $loaded = false;
57 if ( $loaded ) {
58 return TRUE;
59 }
60 global $wgMessageCache;
61 require_once( dirname( __FILE__ ) . '/ashighlight.i18n.php' );
62 foreach( efashighlightMessages() as $lang => $messages )
63 $wgMessageCache->addMessages( $messages, $lang );
64 return TRUE;
65 }
66
67 // called anytime a 'source' tag is seen in the wikitext...
68 function ashighlightHook( $text, $params = array(), $parser ) {
69 if ( !class_exists( 'ASHighlight' ) ) {
70 require( 'ashighlight.class.php' );
71 }
72 ashighlightLoadMessages();
73 return isset( $params['lang'] )
74 ? ashighlightFormat( trim( $text ), $params, $parser )
75 : ashighlightHelp();
76 }
77
78 // format the passed $text in the language $params['lang']
79 function ashighlightFormat( $text, $params, $parser ) {
80 $lang = $params['lang'];
81 if ( !preg_match( '/^[A-Za-z_0-9-]*$/', $lang ) ) {
82 return ashighlightHelp( wfMsgHtml( 'ashighlight-err-language' ) );
83 }
84
85 $ash = new ASHighlight();
86
87 $ash->set_encoding('UTF-8');
88
89 if(isset($params['tabwidth'])){
90 $ash->set_tab_width($params['tabwidth']);
91 }
92
93 if(isset( $params['line'] ) ) {
94 $ash->enable_line_numbers();
95 }
96
97 if(isset( $params['start'] ) ) {
98 $ash->start_line_numbers_at( $params['start'] );
99 }
100
101 $out = $ash->parse_code($text,$lang);
102
103 if($ash->error){
104 return ashighlightHelp($ash->errmsg);
105 }else{
106 // Per-language class for stylesheet
107 //$ASH_CSS[]=
108 $css =
109 "<style type=\"text/css\">/*<![CDATA[*/\n".$ash->get_stylesheet()."/*]]>*/</style>\n";
110 $out = $css . "<pre>$out</pre>";
111 return $out;
112 }
113 }
114
115 /**
116 Return a syntax help message
117 @param string $error HTML error message
118 */
119 function ashighlightHelp( $error = false ) {
120 return ashighlightError(
121 ( $error ? "<p>$error</p>" : '' ) .
122 '<p>' . wfMsg( 'ashighlight-specify' ) . ' ' .
123 '<samp>&lt;source lang=&quot;html&quot;&gt;...&lt;/source&gt;</samp></p>' .
124 '<p>' . wfMsg( 'ashighlight-supported' ) . '</p>' .
125 ashighlightFormatList( ashighlightLanguageList() ) );
126 }
127
128 /**
129 * Put a red-bordered div around an HTML message
130 * @param string $contents HTML error message
131 * @return HTML
132 */
133 function ashighlightError( $contents ) {
134 return "<div style=\"border:solid red 1px; padding:.5em;\">$contents</div>";
135 }
136
137 function ashighlightFormatList( $list ) {
138 return empty( $list )
139 ? wfMsg( 'ashighlight-err-loading' )
140 : '<p style="padding:0em 1em;">' .
141 implode( ', ', array_map( 'ashighlightListItem', $list ) ) .
142 '</p>';
143 }
144
145 function ashighlightListItem( $item ) {
146 return "<samp>" . htmlspecialchars( $item ) . "</samp>";
147 }
148
149 function ashighlightLanguageList() {
150 $langs = array();
151 $langroot = @opendir( ASHIGHLIGHT_LANG_ROOT );
152 if( $langroot ) {
153 while( $item = readdir( $langroot ) ) {
154 if( preg_match( '/^(.*)\\.lang$/', $item, $matches ) ) {
155 $langs[] = $matches[1];
156 }
157 }
158 closedir( $langroot );
159 }
160 sort( $langs );
161 return $langs;
162 }
163
164 function ashighlightCss(&$out){
165 //foreach($ASH_CSS as $css){
166 // $out.=$css."\n\n";
167 //}
168 $out.="kwa{font:bold}";
169 return true;
170 }
171
172 ?>

john.pye@anu.edu.au
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