Graphviz-plugin

For more information refer to http://andkorn.org/wiki/doku.php?id=howtos:computers:dokuwiki:graphviz_plugin

Read more about graphviz at http://www.graphviz.org/Documentation.php.

This plugin download page seems to have been removed - does anyone have a copy of the code?

• web.archive.org
• dokutexit

Try something like this, slightly modified for my needs:

<?php
/**
 * graphviz-Plugin: Parses graphviz-blocks
 * 
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Carl-Christian Salvesen <calle@ioslo.net>
 * @version    0.1.20050525
 */
 
if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
require_once(DOKU_INC.'inc/init.php');
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'syntax.php');
 
 
/**
 * All DokuWiki plugins to extend the parser/rendering mechanism
 * need to inherit from this class
 */
class syntax_plugin_graphviz extends DokuWiki_Syntax_Plugin {
 
 
  function getInfo(){
    return array(
		 'author' => 'Carl-Christian Salvesen',
		 'email'  => 'calle@ioslo.net',
		 'date'   => '2007-02-11',
		 'name'   => 'graphviz Plugin',
		 'desc'   => 'Parses graphviz-blocks',
		 'url'    => 'http://wiki.ioslo.net/dokuwiki/graphviz',
		 );
  }
 
  /**
   * What kind of syntax are we?
   */
  function getType(){
    return 'protected';
  }
 
  /**
   * Where to sort in?
   */ 
  function getSort(){
    return 100;
  }
 
 
  /**
   * Connect pattern to lexer
   */
  function connectTo($mode) {
    $this->Lexer->addEntryPattern('<graphviz(?=.*\x3C/graphviz\x3E)',$mode,'plugin_graphviz');
  }
 
  function postConnect() {
    $this->Lexer->addExitPattern('</graphviz>','plugin_graphviz');
  }
 
  /**
   * Handle the match
   */
 
 
  function handle($match, $state, $pos) {
    if ( $state == DOKU_LEXER_UNMATCHED ) {
      $matches = preg_split('/>/u',$match,2);
      $matches[0] = trim($matches[0]);
      if ( trim($matches[0]) == '' ) {
	$matches[0] = NULL;
      }
      return array($matches[1],$matches[0]);
    }
    return TRUE;
  }
  /**
   * Create output
   */
  function render($mode, &$renderer, $data) {
    global $conf;
    if($mode == 'xhtml' && strlen($data[0]) > 1) {
      if ( !is_dir($conf['mediadir'] . '/graphviz') ) 
	io_mkdir_p($conf['mediadir'] . '/graphviz'); //Using dokuwiki framework
      $hash = md5(serialize($data));
      $filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
      $url = ml('graphviz:'.$hash.'.png'); //Using dokuwiki framework
 
      if ( is_readable($filename) ) {
	// cached.
	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
	//						$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
	return true;
      }
 
      if (!$this->createImage($filename, $data[0], $data[1])) {
	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
	//					$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
      } else {
	$renderer->doc .= '**ERROR RENDERING GRAPHVIZ**';
      }
      return true;
    }
    if($mode == 'latex' && strlen($data[0]) > 1) { //Latex mode for dokuTeXit
      global $TeXitImage_glob;
      global $_dokutexit_conf;
      $hash = md5(serialize($data));
      if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
      } else {
	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.ps';
      }
      //Saving filename for zipfile
      $TeXitImage_glob['plugin_list'][$hash] = $filename; 
      if (is_readable($filename) ) {
	// cached.
	$renderer->doc .= "\\begin{figure}[h]\n";
	$renderer->doc .= "\t\\begin{center}\n";
	$renderer->doc .= "\t\t\\includegraphics{";
	$renderer->doc .= $filename;
	$renderer->doc .= "}\n";
	$renderer->doc .= "\t\\end{center}\n";
	$renderer->doc .= "\\end{figure}\n";
	return true;
      }
      if (!$this->createImageLatex($filename, $data[0], $data[1])) {
	$renderer->doc .= "\\begin{figure}[h]\n";
	$renderer->doc .= "\t\\begin{center}\n";
	$renderer->doc .= "\t\t\\includegraphics{";
	$renderer->doc .= $filename;
	$renderer->doc .= "}\n";
	$renderer->doc .= "\t\\end{center}\n";
	$renderer->doc .= "\\end{figure}\n";
      } else {
	$renderer->putent('**ERROR RENDERING GRAPHVIZ**');
      }
      return true;
    }
    return false;
  }
 
  function createImageLatex($filename, &$data, $graphcmd='dot') { //Latex mode have better rendering with ps
    if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
      return $this->createImage($filename, $data, $graphcmd);
    }
    $cmds = array('dot','neato','twopi','circo','fdp');
    if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
 
    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
    io_saveFile($tmpfname, $data);
    $retval = exec('/usr/bin/'.$graphcmd.' -Gsize="5,4" -Tps ' .
		   $tmpfname.' -o '. $filename);
    unlink($tmpfname);
    return $retval;
  }
 
  function createImage($filename, &$data, $graphcmd='dot') {
 
    $cmds = array('dot','neato','twopi','circo','fdp');
    if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
 
    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
    io_saveFile($tmpfname, $data); //Using dokuwiki framework
    //    file_put_contents($tmpfname, $data); 
    // I don't use Imagemagik, becouse i have problem with russian letter in this case
    //$retval = exec('/usr/bin/'.$graphcmd.' -Tps '.$tmpfname.'|/usr/bin/convert ps:- png:'.$filename);
    // Comment out the line over this and uncomment the line below to NOT use ImageMagick for antialiazing.
 
 
     $retval = exec('/usr/bin/'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
    /* WINDOWS VERSION */
    // change     $tmpfname = tempnam("C:\temp", "dokuwiki.graphviz");
    //change $retval = exec('C:\grapviz\bin\'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
    unlink($tmpfname);
    return $retval;
  }
 
}
 
?>

If you use open_basedir and/or safe mode add this patch to fetch from php.ini the tmp value

--- lib/plugins/graphviz/syntax.php	2008-08-13 12:53:37.000000000 +0200
+++ lib/plugins/graphviz/syntax.save.php	2008-08-13 12:53:21.000000000 +0200
@@ -159,7 +159,7 @@ class syntax_plugin_graphviz extends Dok
     $cmds = array('dot','neato','twopi','circo','fdp');
     if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
 
-    $tmpfname = tempnam(ini_get('upload_tmp_dir'), "dokuwiki.graphviz");
+    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
     io_saveFile($tmpfname, $data); //Using dokuwiki framework
     //    file_put_contents($tmpfname, $data); 
     $retval = exec('/usr/local/bin/'.$graphcmd.' -Tps '.$tmpfname.'|/usr/local/bin/convert ps:- png:'.$filename);

— Nicolas GORALSKI

Here's the patch to update plugin to render image maps. All code is “borrowed” from http://www.wickle.com/wiki/index.php/Graphviz_extension (src). Diff is generated against the source posted above, which is modified against the original version of the plugin.

--- syntax-orig.php	Tue Dec 23 14:39:09 2008
+++ syntax.php	Tue Dec 23 14:24:41 2008
@@ -8,11 +8,9 @@
  */
  
 if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
-require_once(DOKU_INC.'inc/init.php');
 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
 require_once(DOKU_PLUGIN.'syntax.php');
  
- 
 /**
  * All DokuWiki plugins to extend the parser/rendering mechanism
  * need to inherit from this class
@@ -24,7 +22,7 @@
     return array(
 		 'author' => 'Carl-Christian Salvesen',
 		 'email'  => 'calle@ioslo.net',
-		 'date'   => '2007-02-11',
+			'date'   => '2005-05-25',
 		 'name'   => 'graphviz Plugin',
 		 'desc'   => 'Parses graphviz-blocks',
 		 'url'    => 'http://wiki.ioslo.net/dokuwiki/graphviz',
@@ -79,97 +77,58 @@
   function render($mode, &$renderer, $data) {
     global $conf;
     if($mode == 'xhtml' && strlen($data[0]) > 1) {
-      if ( !is_dir($conf['mediadir'] . '/graphviz') ) 
-	io_mkdir_p($conf['mediadir'] . '/graphviz'); //Using dokuwiki framework
+				if ( !is_dir($conf['mediadir'] . '/graphviz') ) mkdir($conf['mediadir'] . '/graphviz', $conf['dmask'], true);
       $hash = md5(serialize($data));
       $filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
-      $url = ml('graphviz:'.$hash.'.png'); //Using dokuwiki framework
+				$url = DOKU_BASE.'/lib/exe/fetch.php?cache='.$cache.'&media='.urlencode('graphviz:'.$hash.'.png');
  
       if ( is_readable($filename) ) {
 	// cached.
-	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
+					$renderer->doc .= "<map name=\"$hash\">{$map}</map>".
+							  "<img usemap=\"#{$hash}\" src=\"$url\" class=\"media\" title=\"Graph\" alt=\"Graph\" />";
 	//						$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
 	return true;
       }
  
       if (!$this->createImage($filename, $data[0], $data[1])) {
-	$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
-	//					$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
+
+					@$map = file_get_contents( $filename.".map" );
+
+					$map=preg_replace("#<ma(.*)>#"," ",$map);
+					$map=str_replace("</map>","",$map);
+				        
+					$renderer->doc  .= "<map name=\"$hash\">{$map}</map>".
+							  "<img usemap=\"#{$hash}\" src=\"$url\" class=\"media\" title=\"Graph\" alt=\"Graph\" />";
+														
+					//$renderer->doc .= '<img src="'.$url.'" class="media" title="Graph" alt="Graph" />';
+					////$renderer->doc .= $renderer->internalmedialink('graphviz:'.$hash.'.png');
+					
       } else {
 	$renderer->doc .= '**ERROR RENDERING GRAPHVIZ**';
       }
       return true;
     }
-    if($mode == 'latex' && strlen($data[0]) > 1) { //Latex mode for dokuTeXit
-      global $TeXitImage_glob;
-      global $_dokutexit_conf;
-      $hash = md5(serialize($data));
-      if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
-	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.png';
-      } else {
-	$filename = $conf['mediadir'] . '/graphviz/'.$hash.'.ps';
-      }
-      //Saving filename for zipfile
-      $TeXitImage_glob['plugin_list'][$hash] = $filename; 
-      if (is_readable($filename) ) {
-	// cached.
-	$renderer->doc .= "\\begin{figure}[h]\n";
-	$renderer->doc .= "\t\\begin{center}\n";
-	$renderer->doc .= "\t\t\\includegraphics{";
-	$renderer->doc .= $filename;
-	$renderer->doc .= "}\n";
-	$renderer->doc .= "\t\\end{center}\n";
-	$renderer->doc .= "\\end{figure}\n";
-	return true;
-      }
-      if (!$this->createImageLatex($filename, $data[0], $data[1])) {
-	$renderer->doc .= "\\begin{figure}[h]\n";
-	$renderer->doc .= "\t\\begin{center}\n";
-	$renderer->doc .= "\t\t\\includegraphics{";
-	$renderer->doc .= $filename;
-	$renderer->doc .= "}\n";
-	$renderer->doc .= "\t\\end{center}\n";
-	$renderer->doc .= "\\end{figure}\n";
-      } else {
-	$renderer->putent('**ERROR RENDERING GRAPHVIZ**');
-      }
-      return true;
-    }
     return false;
   }
  
-  function createImageLatex($filename, &$data, $graphcmd='dot') { //Latex mode have better rendering with ps
-    if (isset($_dokutexit_conf) && $_dokutexit_conf['mode'] == 'pdflatex') {
-      return $this->createImage($filename, $data, $graphcmd);
-    }
-    $cmds = array('dot','neato','twopi','circo','fdp');
-    if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
- 
-    $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
-    io_saveFile($tmpfname, $data);
-    $retval = exec('/usr/bin/'.$graphcmd.' -Gsize="5,4" -Tps ' .
-		   $tmpfname.' -o '. $filename);
-    unlink($tmpfname);
-    return $retval;
-  }
- 
   function createImage($filename, &$data, $graphcmd='dot') {
  
     $cmds = array('dot','neato','twopi','circo','fdp');
     if ( !in_array($graphcmd, $cmds) ) $graphcmd = 'dot';
  
     $tmpfname = tempnam("/tmp", "dokuwiki.graphviz");
-    io_saveFile($tmpfname, $data); //Using dokuwiki framework
-    //    file_put_contents($tmpfname, $data); 
-    // I don't use Imagemagik, becouse i have problem with russian letter in this case
-    //$retval = exec('/usr/bin/'.$graphcmd.' -Tps '.$tmpfname.'|/usr/bin/convert ps:- png:'.$filename);
-    // Comment out the line over this and uncomment the line below to NOT use ImageMagick for antialiazing.
+			file_put_contents($tmpfname, $data);
+			//$retval = exec('c:/apps/graphviz/graphviz/bin/'.$graphcmd.' -Tsvg '.$tmpfname.'|c:/apps/imagemagick/convert svg:- png:'.$filename);
+			//$retval = exec('c:/apps/graphviz/graphviz/bin/'.$graphcmd.' -Tpng '.$tmpfname.' -o '.$filename);
+			$retval = exec('c:/apps/graphviz/2.21/bin/'.$graphcmd.' -Tpng '.$tmpfname.' -o '.$filename);
+			
+			//generate map
+			$retval = exec('c:/apps/graphviz/2.21/bin/'.$graphcmd.' -Tcmapx '.$tmpfname.' -o '.$filename.'.map');
  
  
-     $retval = exec('/usr/bin/'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
-    /* WINDOWS VERSION */
-    // change     $tmpfname = tempnam("C:\temp", "dokuwiki.graphviz");
-    //change $retval = exec('C:\grapviz\bin\'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
+
+			// Comment out the line over this and uncomment the line below to NOT use ImageMagick for antialiazing.
+			// $retval = exec('/usr/bin/'.$graphcmd.' -Tpng -o '.$filename .' '.$tmpfname);
     unlink($tmpfname);
     return $retval;
   }

You may also need to update your Graphviz installation.

— Alex POPOV