2 rcs_id('$Id: Ploticus.php,v 1.5 2004-06-28 16:35:12 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 Ploticus plugin passes all its arguments to the ploticus
25 * binary and displays the result as PNG, GIF, EPS, SVG or SWF.
26 * Ploticus is a free, GPL, non-interactive software package
27 * for producing plots, charts, and graphics from data.
28 * See http://ploticus.sourceforge.net/doc/welcome.html
30 * @Author: Reini Urban
33 * - For windows you need either a gd library with GIF support or
34 * a ploticus with PNG support. This comes only with the cygwin built.
35 * - We support only images supported by GD so far (PNG most likely).
36 * No EPS, PS, SWF, SVG or SVGZ support due to limitations in WikiPluginCached.
37 * This will be fixed soon.
40 <?plugin Ploticus device=png [ploticus options...]
41 multiline ploticus script ...
43 * or without any script: (not tested)
44 <?plugin Ploticus -prefab vbars data=myfile.dat delim=tab y=1 clickmapurl="http://mywiki.url/wiki/?pagename=@2" clickmaplabel="@3" -csmap ?>
46 * TODO: PloticusSql - create intermediate data from SQL. Similar to SqlResult, just in graphic form.
47 * For example to produce nice looking pagehit statistics or ratings statistics.
50 if (!defined("PLOTICUS_EXE"))
52 define('PLOTICUS_EXE','pl.exe');
54 define('PLOTICUS_EXE','/usr/local/bin/pl');
56 require_once "lib/WikiPluginCached.php";
58 class WikiPlugin_Ploticus
59 extends WikiPluginCached
62 * Sets plugin type to MAP if -csmap (-map or -mapdemo or -csmapdemo not supported)
63 * or HTML if the imagetype is not supported by GD (EPS, SVG, SVGZ) (not yet)
64 * or IMAGE if device = png, gif or jpeg
66 function getPluginType() {
67 if (!empty($this->_args['-csmap']))
68 return PLUGIN_CACHED_MAP; // not yet tested
70 return PLUGIN_CACHED_IMG_INLINE;
75 function getDescription () {
76 return _("Ploticus image creation");
78 function managesValidators() {
81 function getVersion() {
82 return preg_replace("/[Revision: $]/", '',
85 function getDefaultArguments() {
87 'device' => 'png', // png,gif,svgz,svg,...
93 function handle_plugin_args_cruft(&$argstr, &$args) {
94 $this->source = $argstr;
97 * Sets the expire time to one day (so the image producing
98 * functions are called seldomly) or to about two minutes
99 * if a help screen is created.
101 function getExpire($dbi, $argarray, $request) {
102 if (!empty($argarray['help']))
103 return '+120'; // 2 minutes
104 return sprintf('+%d', 3*86000); // approx 3 days
108 * Sets the imagetype according to user wishes and
109 * relies on WikiPluginCached to catch illegal image
111 * (I feel unsure whether this option is reasonable in
112 * this case, because png will definitely have the
115 * @return string 'png', 'jpeg', 'gif'
117 function getImageType($dbi, $argarray, $request) {
118 return $argarray['device'];
122 * This gives an alternative text description of
125 function getAlt($dbi, $argstr, $request) {
126 return (!empty($this->_args['alt'])) ? $this->_args['alt']
127 : $this->getDescription();
131 * Returns an image containing a usage description of the plugin.
133 * TODO: -csmap pointing to the Ploticus documentation at sf.net.
134 * @return string image handle
136 function helpImage() {
137 $def = $this->defaultArguments();
138 //$other_imgtypes = $GLOBALS['PLUGIN_CACHED_IMGTYPES'];
139 //unset ($other_imgtypes[$def['imgtype']]);
141 '<?plugin Ploticus ' .
142 'device' => ' = "' . $def['device'] . "(default)|" . join('|',$GLOBALS['PLUGIN_CACHED_IMGTYPES']).'"',
143 'alt' => ' = "alternate text"',
144 '-csmap' => ' bool: clickable map?',
145 'help' => ' bool: displays this screen',
146 '...' => ' all further lines below the first plugin line ',
147 '' => ' and inside the tags are the ploticus script.',
151 foreach($helparr as $alignright => $alignleft) {
152 $length = max($length, strlen($alignright));
155 foreach($helparr as $alignright => $alignleft) {
156 $helptext .= substr(' '
157 . $alignright, -$length).$alignleft."\n";
159 return $this->text2img($helptext, 4, array(1, 0, 0),
160 array(255, 255, 255));
163 function newFilterThroughCmd($input, $commandLine) {
164 $descriptorspec = array(
165 0 => array("pipe", "r"), // stdin is a pipe that the child will read from
166 1 => array("pipe", "w"), // stdout is a pipe that the child will write to
167 2 => array("pipe", "w"), // stdout is a pipe that the child will write to
170 $process = proc_open("$commandLine", $descriptorspec, $pipes);
171 if (is_resource($process)) {
172 // $pipes now looks like this:
173 // 0 => writeable handle connected to child stdin
174 // 1 => readable handle connected to child stdout
175 // 2 => readable handle connected to child stderr
176 fwrite($pipes[0], $input);
179 while(!feof($pipes[1])) {
180 $buf .= fgets($pipes[1], 1024);
184 while(!feof($pipes[2])) {
185 $stderr .= fgets($pipes[2], 1024);
188 // It is important that you close any pipes before calling
189 // proc_close in order to avoid a deadlock
190 $return_value = proc_close($process);
191 if (empty($buf)) printXML($this->error($stderr));
196 /* PHP versions < 4.3
197 * TODO: via temp file looks more promising
199 function OldFilterThroughCmd($input, $commandLine) {
200 $input = str_replace ("\\", "\\\\", $input);
201 $input = str_replace ("\"", "\\\"", $input);
202 $input = str_replace ("\$", "\\\$", $input);
203 $input = str_replace ("`", "\`", $input);
204 $input = str_replace ("'", "\'", $input);
205 //$input = str_replace (";", "\;", $input);
207 $pipe = popen("echo \"$input\"|$commandLine", 'r');
209 print "pipe failed.";
213 while (!feof($pipe)) {
214 $output .= fread($pipe, 1024);
220 function withShellCommand($script) {
222 $pos = strpos($script, $findme);
228 function getImage($dbi, $argarray, $request) {
229 //extract($this->getArgs($argstr, $request));
230 //extract($argarray);
231 $source =& $this->source;
232 if (!empty($source)) {
233 if ($this->withShellCommand($source)) {
234 $this->_errortext .= _("shell commands not allowed in Ploticus");
238 //$cacheparams = $GLOBALS['CacheParams'];
239 $tempfiles = $this->tempnam('Ploticus');
240 $gif = $argarray['device'];
241 $args = " -stdin -$gif -o $tempfiles.$gif";
242 if (!empty($argarray['-csmap'])) {
243 $args .= " -csmap -mapfile $tempfiles.map";
244 $this->_mapfile = "$tempfiles.map";
246 $commandLine = PLOTICUS_EXE . "$args";
247 if (check_php_version(4,3,0))
248 $code = $this->newFilterThroughCmd($source, $commandLine);
250 $code = $this->oldFilterThroughCmd($source, $commandLine);
252 // return $this->error(fmt("Couldn't start commandline '%s'", $commandLine));
253 if (! file_exists("$tempfiles.$gif") ) {
254 $this->_errortext .= fmt("Ploticus error: Outputfile '%s' not created", $tempfiles.$gif);
257 $ImageCreateFromFunc = "ImageCreateFrom$gif";
258 $img = $ImageCreateFromFunc( "$tempfiles.$gif" );
261 return $this->error(fmt("empty source"));
265 function getMap($dbi, $argarray, $request) {
266 $img = $this->getImage($dbi, $argarray, $request);
267 return array($this->_mapfile, $img);
271 // $Log: not supported by cvs2svn $
272 // Revision 1.4 2004/06/19 10:06:38 rurban
273 // Moved lib/plugincache-config.php to config/*.ini
274 // use PLUGIN_CACHED_* constants instead of global $CacheParams
276 // Revision 1.3 2004/06/03 09:40:57 rurban
277 // WikiPluginCache improvements
279 // Revision 1.2 2004/06/02 19:37:07 rurban
280 // extended description
282 // Revision 1.1 2004/06/02 19:12:42 rurban
283 // new Ploticus plugin
292 // c-hanging-comment-ender-p: nil
293 // indent-tabs-mode: nil