xref: /plugin/graphviz/syntax.php (revision 903f28d75b3c2250212142277d446be3bdcf3e67) 
1<?php
2/**
3 * graphviz-Plugin: Parses graphviz-blocks
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Carl-Christian Salvesen <calle@ioslo.net>
7 * @version    0.1.20050525
8 */
9
10if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
11require_once(DOKU_INC.'inc/init.php');
12if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
13require_once(DOKU_PLUGIN.'syntax.php');
14
15
16/**
17 * All DokuWiki plugins to extend the parser/rendering mechanism
18 * need to inherit from this class
19 */
20class syntax_plugin_graphviz extends DokuWiki_Syntax_Plugin {
21
22
23  function getInfo(){
24    return array(
25		 'author' => 'Carl-Christian Salvesen',
26		 'email'  => 'calle@ioslo.net',
27		 'date'   => '2007-02-11',
28		 'name'   => 'graphviz Plugin',
29		 'desc'   => 'Parses graphviz-blocks',
30		 'url'    => 'http://wiki.ioslo.net/dokuwiki/graphviz',
31		 );
32  }
33
34  /**
35   * What kind of syntax are we?
36   */
37  function getType(){
38    return 'protected';
39  }
40
41  /**
42   * Where to sort in?
43   */
44  function getSort(){
45    return 100;
46  }
47
48
49  /**
50   * Connect pattern to lexer
51   */
52  function connectTo($mode) {
53    $this->Lexer->addEntryPattern('<graphviz(?=.*\x3C/graphviz\x3E)',$mode,'plugin_graphviz');
54  }
55
56  function postConnect() {
57    $this->Lexer->addExitPattern('</graphviz>','plugin_graphviz');
58  }
59
60  /**
61   * Handle the match
62   */
63
64
65  function handle($match, $state, $pos) {
66    if ( $state == DOKU_LEXER_UNMATCHED ) {
67      $matches = preg_split('/>/u',$match,2);
68      $matches[0] = trim($matches[0]);
69      if ( trim($matches[0]) == '' ) {
70	$matches[0] = NULL;
71      }
72      return array($matches[1],$matches[0]);
73    }
74    return TRUE;
75  }
76  /**
77   * Create output
78   */
79  function render($mode, &$renderer, $data) {
80    global $conf;
81    if($mode == 'xhtml' && strlen($data[0]) > 1) {
82      if ( !is_dir($conf['mediadir'] . '/graphviz') )
83	io_mkdir_p($conf['mediadir'] . '/graphviz'); //Using dokuwiki framework
84      $hash = md5(serialize($data));
85      $filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
86      $url = ml('graphviz:'.$hash.'.png'); //Using dokuwiki framework
87
88      if ( is_readable($filename) ) {
89	// cached.
90	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
91	//						$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
92	return true;
93      }
94
95      if (!$this->createImage($filename, $data[0], $data[1])) {
96	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" /> ';
97	//					$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
98      } else {
99	$renderer->doc .= '**ERROR RENDERING GRAPHVIZ**';
100      }
101      return true;
102    }
103    elseif($mode == 'odt' && strlen($data[0])>1){
104	list($state, $datae) = $data;
105
106        $hash = md5(serialize($data));
107	$imfilename=$conf['mediadir'] . '/graphviz/'.$hash.'.png';
108
109	if (is_readable($filename)){
110		     // Content
111		      $renderer->p_close();
112		      $renderer->doc .= '<text:p text:style-name="Table_20_Contents">';
113		      $renderer->_odtAddImage($imfilename);
114		      $renderer->doc .= '</text:p>';
115		      $renderer->p_open();
116		}
117		elseif (!$this->createImage($imfilename, $data[0], $data[1])) {
118			// Content
119	              $renderer->p_close();
120
121		      $renderer->doc .= '<text:p text:style-name="Table_20_Contents">';
122	              $renderer->_odtAddImage($imfilename);
123		      $renderer->doc .= '</text:p>';
124        	      $renderer->p_open();
125		}
126		else{
127			$renderer->doc .= "UNABLE TO ADD GRAPHVIZ GRAPH";
128		}
129	return true;
130    }
131    elseif($mode == 'latex' && strlen($data[0]) > 1) { //Latex mode for dokuTeXit
132      global $TeXitImage_glob;
133      global $_dokutexit_conf;
134      $hash = md5(serialize($data));
135      if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
136	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
137      } else {
138	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.ps';
139      }
140      //Saving filename for zipfile
141      $TeXitImage_glob['plugin_list'][$hash] = $filename;
142      if (is_readable($filename) ) {
143	// cached.
144	$renderer->doc .= "\\begin{figure}[h]\n";
145	$renderer->doc .= "\t\\begin{center}\n";
146	$renderer->doc .= "\t\t\\includegraphics{";
147	$renderer->doc .= $filename;
148	$renderer->doc .= "}\n";
149	$renderer->doc .= "\t\\end{center}\n";
150	$renderer->doc .= "\\end{figure}\n";
151	return true;
152      }
153      if (!$this->createImageLatex($filename, $data[0], $data[1])) {
154	$renderer->doc .= "\\begin{figure}[h]\n";
155	$renderer->doc .= "\t\\begin{center}\n";
156	$renderer->doc .= "\t\t\\includegraphics{";
157	$renderer->doc .= $filename;
158	$renderer->doc .= "}\n";
159	$renderer->doc .= "\t\\end{center}\n";
160	$renderer->doc .= "\\end{figure}\n";
161      } else {
162	$renderer->putent('**ERROR RENDERING GRAPHVIZ**');
163      }
164      return true;
165    }
166    return false;
167  }
168
169  function createImageLatex($filename, &$data, $graphcmd='dot') { //Latex mode have better rendering with ps
170    if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
171      return $this->createImage($filename, $data, $graphcmd);
172    }
173    $cmds = array('dot','neato','twopi','circo','fdp');
174    if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
175
176    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
177    io_saveFile($tmpfname, $data);
178    $retval = exec('/usr/bin/'.$graphcmd.' -Gsize="5,4" -Tps ' .
179		   $tmpfname.' -o '. $filename);
180    unlink($tmpfname);
181    return $retval;
182  }
183
184  function createImage($filename, &$data, $graphcmd='dot') {
185
186    $cmds = array('dot','neato','twopi','circo','fdp');
187    if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
188
189    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
190    io_saveFile($tmpfname, $data); //Using dokuwiki framework
191    //    file_put_contents($tmpfname, $data);
192    //$retval = exec('/usr/bin/'.$graphcmd.' -Tps '.$tmpfname.'|/usr/bin/convert ps:- png:'.$filename);
193    // Comment out the line over this and uncomment the line below to NOT use ImageMagick for antialiazing.
194    // Comment out the line over this and uncomment the line below to NOT use ImageMagick for antialiazing.
195
196
197     $retval = exec('/usr/bin/'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
198    /* WINDOWS VERSION */
199    // change     $tmpfname = tempnam("C:\temp", "dokuwiki.graphviz");
200    //change $retval = exec('C:\grapviz\bin\'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
201    unlink($tmpfname);
202    return $retval;
203  }
204
205}
206
207?>
208