2 rcs_id('$Id: GraphViz.php,v 1.4 2005-05-06 16:54:59 rurban Exp $');
4 Copyright 2004 $ThePhpWikiProgrammingTeam
6 This file is part of PhpWiki.
8 PhpWiki is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 PhpWiki is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with PhpWiki; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * The GraphViz plugin passes all its arguments to the grapviz dot
25 * binary and displays the result as cached image (PNG,GIF,SVG) or imagemap.
27 * @Author: Reini Urban
30 * - We support only images supported by GD so far (PNG most likely).
31 * EPS, PS, SWF, SVG or SVGZ and imagemaps need to be tested.
34 <?plugin GraphViz [options...]
35 multiline dot script ...
38 * See also: VisualWiki, which also uses dot and WikiPluginCached.
42 * - expand embedded <!plugin-list pagelist !> within the digraph script.
45 if (PHP_OS == "Darwin") { // Mac OS X
46 if (!defined("GRAPHVIZ_EXE"))
47 define('GRAPHVIZ_EXE', '/sw/bin/dot'); // graphviz via Fink
48 // Name of the Truetypefont - at least LucidaSansRegular.ttf is always present on OS X
49 if (!defined('VISUALWIKIFONT'))
50 define('VISUALWIKIFONT', 'LucidaSansRegular');
51 // The default font paths do not find your fonts, set the path here:
52 $fontpath = "/System/Library/Frameworks/JavaVM.framework/Versions/1.3.1/Home/lib/fonts/";
53 //$fontpath = "/usr/X11R6/lib/X11/fonts/TTF/";
55 elseif (isWindows()) {
56 if (!defined("GRAPHVIZ_EXE"))
57 define('GRAPHVIZ_EXE','dot.exe');
58 if (!defined('VISUALWIKIFONT'))
59 define('VISUALWIKIFONT', 'Arial');
60 } elseif ($_SERVER["SERVER_NAME"] == 'phpwiki.sourceforge.net') { // sf.net hack
61 if (!defined("GRAPHVIZ_EXE"))
62 define('GRAPHVIZ_EXE','/home/groups/p/ph/phpwiki/bin/dot');
63 if (!defined('VISUALWIKIFONT'))
64 define('VISUALWIKIFONT', 'luximr');
66 if (!defined("GRAPHVIZ_EXE"))
67 define('GRAPHVIZ_EXE','/usr/local/bin/dot');
68 // Name of the Truetypefont - Helvetica is probably easier to read
69 if (!defined('VISUALWIKIFONT'))
70 define('VISUALWIKIFONT', 'Helvetica');
71 //define('VISUALWIKIFONT', 'Times');
72 //define('VISUALWIKIFONT', 'Arial');
73 // The default font paths do not find your fonts, set the path here:
74 //$fontpath = "/usr/X11R6/lib/X11/fonts/TTF/";
75 //$fontpath = "/usr/share/fonts/default/TrueType/";
78 require_once "lib/WikiPluginCached.php";
80 class WikiPlugin_GraphViz
81 extends WikiPluginCached
84 function _mapTypes() {
85 return array("imap", "cmapx", "ismap", "cmap");
89 * Sets plugin type to MAP
90 * or HTML if the imagetype is not supported by GD (EPS, SVG, SVGZ) (not yet)
91 * or IMG_INLINE if device = png, gif or jpeg
93 function getPluginType() {
94 $type = $this->decideImgType($this->_args['imgtype']);
95 if ($type == $this->_args['imgtype'])
96 return PLUGIN_CACHED_IMG_INLINE;
97 $device = strtolower($this->_args['imgtype']);
98 if (in_array($device, $this->_mapTypes()))
99 return PLUGIN_CACHED_MAP;
100 if (in_array($device, array('svg','swf','svgz','eps','ps'))) {
101 switch ($this->_args['imgtype']) {
104 return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_SVG_PNG;
106 return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_SWF;
108 return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_HTML;
112 return PLUGIN_CACHED_IMG_INLINE; // normal cached libgd image handles
114 function getName () {
115 return _("GraphViz");
117 function getDescription () {
118 return _("GraphViz image or imagemap creation of directed graphs");
120 function managesValidators() {
123 function getVersion() {
124 return preg_replace("/[Revision: $]/", '',
125 "\$Revision: 1.4 $");
127 function getDefaultArguments() {
129 'imgtype' => 'png', // png,gif,svgz,svg,...
131 'pages' => false, // <!plugin-list !> support
136 function handle_plugin_args_cruft(&$argstr, &$args) {
137 $this->source = $argstr;
140 * Sets the expire time to one day (so the image producing
141 * functions are called seldomly) or to about two minutes
142 * if a help screen is created.
144 function getExpire($dbi, $argarray, $request) {
145 if (!empty($argarray['help']))
146 return '+120'; // 2 minutes
147 return sprintf('+%d', 3*86000); // approx 3 days
151 * Sets the imagetype according to user wishes and
152 * relies on WikiPluginCached to catch illegal image
154 * @return string 'png', 'jpeg', 'gif'
156 function getImageType($dbi, $argarray, $request) {
157 return $argarray['imgtype'];
161 * This gives an alternative text description of
164 function getAlt($dbi, $argstr, $request) {
165 return (!empty($this->_args['alt'])) ? $this->_args['alt']
166 : $this->getDescription();
170 * Returns an image containing a usage description of the plugin.
172 * TODO: *map features.
173 * @return string image handle
175 function helpImage() {
176 $def = $this->defaultArguments();
177 //$other_imgtypes = $GLOBALS['PLUGIN_CACHED_IMGTYPES'];
178 //unset ($other_imgtypes[$def['imgtype']]);
179 $imgtypes = $GLOBALS['PLUGIN_CACHED_IMGTYPES'];
180 $imgtypes = array_merge($imgtypes, array("svg", "svgz", "ps"), $this->_mapTypes());
182 '<?plugin GraphViz ' .
183 'imgtype' => ' = "' . $def['imgtype'] . "(default)|" . join('|',$imgtypes).'"',
184 'alt' => ' = "alternate text"',
185 'pages' => ' = "pages,*" or <!plugin-list !> pagelist as input',
186 'exclude' => ' = "pages,*" or <!plugin-list !> pagelist as input',
187 'help' => ' bool: displays this screen',
188 '...' => ' all further lines below the first plugin line ',
189 '' => ' and inside the tags are the dot script.',
193 foreach($helparr as $alignright => $alignleft) {
194 $length = max($length, strlen($alignright));
197 foreach($helparr as $alignright => $alignleft) {
198 $helptext .= substr(' '
199 . $alignright, -$length).$alignleft."\n";
201 return $this->text2img($helptext, 4, array(1, 0, 0),
202 array(255, 255, 255));
205 function createDotFile($tempfile='', $argarray=false) {
206 $source =& $this->source;
207 if (empty($source)) {
208 // create digraph from pages
209 $source = "digraph GraphViz {\n"; // }
210 foreach ($argarray['pages'] as $name) { // support <!plugin-list !> pagelists
211 // allow Page/SubPage
212 $url = str_replace(urlencode(SUBPAGE_SEPARATOR), SUBPAGE_SEPARATOR, rawurlencode($name));
213 $source .= " \"$name\" [URL=\"$url\"];\n";
218 /* //TODO: expand inlined plugin-list arg
220 foreach ($source as $data) {
223 $src .= ("\t" . join(" ", $data) . "\n");
225 $src .= ("\t" . '"' . $data . '" ' . $i++ . "\n");
231 $tempfile = $this->tempnam($this->getName().".dot");
234 if (!$fp = fopen($tempfile, 'w'))
236 $ok = fwrite($fp, $source);
237 $ok = fclose($fp) && $ok; // close anyway
241 function getImage($dbi, $argarray, $request) {
242 if (!($dotfile = $this->createDotFile($argarray)))
243 return $this->error(fmt("empty source"));
245 $dotbin = GRAPHVIZ_EXE;
246 $tempfiles = $this->tempnam($this->getName());
247 $gif = $argarray['imgtype'];
248 if (in_array($gif, array("imap", "cmapx", "ismap", "cmap"))) {
249 $this->_mapfile = "$tempfiles.map";
250 $gif = $this->decideImgType($argarray['imgtype']);
253 $ImageCreateFromFunc = "ImageCreateFrom$gif";
254 $outfile = $tempfiles.".".$gif;
255 $debug = $request->getArg('debug');
257 $tempdir = dirname($tempfiles);
258 $tempout = $tempdir . "/.debug";
261 $this->createDotFile($tempfiles.'.dot', $argarray);
262 $this->execute("$dotbin -T$gif $dotfile -o $outfile" .
263 ($debug ? " > $tempout 2>&1" : " 2>&1"), $outfile);
264 //$code = $this->filterThroughCmd($source, GRAPHVIZ_EXE . "$args");
266 // return $this->error(fmt("Couldn't start commandline '%s'", $commandLine));
268 if (! file_exists($outfile) ) {
269 $this->_errortext .= sprintf(_("%s error: outputfile '%s' not created"),
270 "GraphViz", $outfile);
271 $this->_errortext .= ("\ncmd-line: $dotbin -T$gif $dotfile -o $outfile");
274 if (function_exists($ImageCreateFromFunc))
275 return $ImageCreateFromFunc( $outfile );
279 // which argument must be set to 'png', for the fallback image when svg will fail on the client.
285 function getMap($dbi, $argarray, $request) {
286 return $this->invokeDot($argarray);
287 // $img = $this->getImage($dbi, $argarray, $request);
288 //return array($this->_mapfile, $img);
292 * Produces a dot file, calls dot twice to obtain an image and a
293 * text description of active areas for hyperlinking and returns
294 * an image and an html map.
296 * @param width float width of the output graph in inches
297 * @param height float height of the graph in inches
298 * @param colorby string color sceme beeing used ('age', 'revtime',
300 * @param shape string node shape; 'ellipse', 'box', 'circle', 'point'
301 * @param label string not used anymore
303 function invokeDot($argarray) {
304 $dotbin = GRAPHVIZ_EXE;
305 $tempfiles = $this->tempnam($this->getName());
306 $gif = $argarray['imgtype'];
307 $ImageCreateFromFunc = "ImageCreateFrom$gif";
308 $outfile = $tempfiles.".".$gif;
309 $debug = $GLOBALS['request']->getArg('debug');
311 $tempdir = dirname($tempfiles);
312 $tempout = $tempdir . "/.debug";
315 && $this->createDotFile($tempfiles.'.dot',$argarray)
316 // && $this->filterThroughCmd('',"$dotbin -T$gif $tempfiles.dot -o $outfile")
317 // && $this->filterThroughCmd('',"$dotbin -Timap $tempfiles.dot -o ".$tempfiles.".map")
318 && $this->execute("$dotbin -T$gif $tempfiles.dot -o $outfile" .
319 ($debug ? " > $tempout 2>&1" : " 2>&1"), $outfile)
320 && $this->execute("$dotbin -Timap $tempfiles.dot -o ".$tempfiles.".map" .
321 ($debug ? " > $tempout 2>&1" : " 2>&1"), $tempfiles.".map")
322 && file_exists( $outfile )
323 && file_exists( $tempfiles.'.map' )
324 && ($img = $ImageCreateFromFunc($outfile))
325 && ($fp = fopen($tempfiles.'.map', 'r'));
328 if ($debug == 'static') {
329 // workaround for misconfigured WikiPluginCached (sf.net) or dot.
330 // present a static png and map file.
331 if (file_exists($outfile) and filesize($outfile) > 900)
334 $img = $tempdir . "/".$this->getName().".".$gif;
335 if (file_exists( $tempfiles.".map") and filesize($tempfiles.".map") > 20)
336 $map = $tempfiles.".map";
338 $map = $tempdir . "/".$this->getName().".map";
339 $img = $ImageCreateFromFunc($img);
340 $fp = fopen($map, 'r');
346 $line = fgets($fp, 1000);
347 if (substr($line, 0, 1) == '#')
349 list($shape, $url, $e1, $e2, $e3, $e4) = sscanf($line,
350 "%s %s %d,%d %d,%d");
351 if ($shape != 'rect')
354 // dot sometimes gives not always the right order so
355 // so we have to sort a bit
360 $map->pushContent(HTML::area(array(
362 'coords' => "$x1,$y1,$x2,$y2",
364 'title' => rawurldecode($url),
368 //trigger_error("url=".$url);
371 ("$outfile: ".(file_exists($outfile) ? filesize($outfile):'missing')."\n".
372 "$tempfiles.map: ".(file_exists("$tempfiles.map") ? filesize("$tempfiles.map"):'missing'));
373 $this->_errortext .= ("\ncmd-line: $dotbin -T$gif $tempfiles.dot -o $outfile");
374 $this->_errortext .= ("\ncmd-line: $dotbin -Timap $tempfiles.dot -o ".$tempfiles.".map");
375 trigger_error($this->_errortext, E_USER_WARNING);
376 return array(false, false);
379 // clean up tempfiles
380 if ($ok and !$argarray['debug'])
381 foreach (array('',".$gif",'.map','.dot') as $ext) {
382 if (file_exists($tempfiles.$ext))
383 unlink($tempfiles.$ext);
387 return array($img, $map);
389 return array(false, false);
393 * Execute system command.
394 * TODO: better use invokeDot for imagemaps, linking to the pages.
396 * @param cmd string command to be invoked
397 * @return boolean error status; true=ok; false=error
399 function execute($cmd, $until = false) {
400 // cmd must redirect stderr to stdout though!
401 $errstr = exec($cmd); //, $outarr, $returnval); // normally 127
402 //$errstr = join('',$outarr);
403 $ok = empty($errstr);
405 trigger_error("\n".$cmd." failed: $errstr", E_USER_WARNING);
406 } elseif ($GLOBALS['request']->getArg('debug'))
407 trigger_error("\n".$cmd.": success\n", E_USER_NOTICE);
411 while (!file_exists($until) and $loop > 0) {
420 return file_exists($until);
425 // $Log: not supported by cvs2svn $
426 // Revision 1.3 2004/12/17 16:49:52 rurban
427 // avoid Invalid username message on Sign In button click
429 // Revision 1.2 2004/12/14 21:34:22 rurban
432 // Revision 1.1 2004/12/13 14:45:33 rurban
433 // new generic GraphViz plugin: similar to Ploticus
441 // c-hanging-comment-ender-p: nil
442 // indent-tabs-mode: nil