dokuwiki-gnuplot-plugin – Blame information for rev 1

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1 office 1 <?php
2 /**
3 * plot-Plugin: Parses gnuplot-blocks
4 *
5 * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author Alexander 'E-Razor' Krause <alexander.krause@erazor-zone.de>
7 */
8  
9 if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
10 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
11 require_once(DOKU_PLUGIN.'syntax.php');
12  
13 if (!is_callable("file_put_contents")) {
14 @require_once('/usr/lib/php/PHP/Compat/Function/file_put_contents.php');
15 if (!is_callable("file_put_contents")) {
16 echo 'Please install dev-php/PEAR-PHP_Compat or >=php-5.0.0 !';
17 }
18 }
19  
20 /**
21 * All DokuWiki plugins to extend the parser/rendering mechanism
22 * need to inherit from this class
23 */
24 class syntax_plugin_plot extends DokuWiki_Syntax_Plugin {
25 function getInfo(){
26 return array(
27 'author' => 'Alexander Krause',
28 'email' => 'alexander.krause@erazor-zone.de',
29 'date' => '2006-05-23',
30 'name' => 'Plot Plugin',
31 'desc' => 'render functions nicely',
32 'url' => 'http://wiki.erazor-zone.de/doku.php?id=wiki:projects:php:dokuwiki:plugins:plot'
33 );
34 }
35 /**
36 * What kind of syntax are we?
37 */
38 function getType(){
39 return 'protected';
40 }
41  
42 /**
43 * Where to sort in?
44 */
45 function getSort(){
46 return 100;
47 }
48  
49  
50 /**
51 * Connect pattern to lexer
52 */
53 function connectTo($mode) {
54 $this->Lexer->addEntryPattern('<plot(?=.*\x3C/plot\x3E)',$mode,'plugin_plot');
55 }
56  
57 function postConnect() {
58 $this->Lexer->addExitPattern('</plot>','plugin_plot');
59 }
60  
61 /**
62 * Handle the match
63 */
64  
65  
66 function handle($match, $state, $pos, Doku_Handler $handler) {
67 if ( $state == DOKU_LEXER_UNMATCHED ) {
68 $matches = preg_split('/>/u',$match,2);
69 $matches[0] = trim($matches[0]);
70 if ( trim($matches[0]) == '' ) {
71 $matches[0] = NULL;
72 }
73 return array($matches[1],$matches[0]);
74 }
75 return TRUE;
76 }
77 /**
78 * Create output
79 */
80 function render($mode, Doku_Renderer $renderer, $data) {
81 global $conf;
82 if($mode == 'xhtml' && strlen($data[0]) > 1) {
83 if ( !is_dir($conf['mediadir'] . '/plot') ) mkdir($conf['mediadir'] . '/plot', 0777-$conf['dmask']);
84 $hash = md5(serialize($data[0]));
85 $filename = $conf['mediadir'] . '/plot/'.$hash.'.png';
86  
87 $size_str=$data[1];
88  
89 if ( is_readable($filename) ) {
90 $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}");
91 return true;
92 }
93  
94 if (!$this->createImage($filename, $data[0])) {
95 $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}");
96 } else {
97 $renderer->doc .= '**ERROR RENDERING GNUPLOT**';
98 }
99 return true;
100 }
101 return false;
102 }
103  
104 function createImage($filename, &$data) {
105 global $conf;
106  
107 $tmpfname = tempnam("/tmp", "dokuwiki.plot");
108  
109 $data = 'set terminal png transparent nocrop enhanced font arial 8 size 420,320'."\n".
110 "set output '".$filename."'\n" . $data;
111  
112 file_put_contents($tmpfname, $data);
113  
114 $retval = exec('/usr/bin/gnuplot '.$tmpfname);
115  
116 unlink($tmpfname);
117 return 0;
118 }
119  
120 // output text string through the parser, allows dokuwiki markup to be used
121 // very ineffecient for small pieces of data - try not to use
122 function plugin_render($text, $format='xhtml') {
123 return p_render($format, p_get_instructions($text),$info);
124 }
125 }
126  
127 ?>