> * or without any script: (not tested) <> * * TODO: PloticusSql - create intermediate data from SQL. Similar to SqlResult, just in graphic form. * For example to produce nice looking pagehit statistics or ratings statistics. * Ploticus has its own sql support within #getproc data, but this would expose security information. */ if (!defined("PLOTICUS_EXE")) if (isWindows()) define('PLOTICUS_EXE', 'pl.exe'); else define('PLOTICUS_EXE', '/usr/local/bin/pl'); //TODO: check $_ENV['PLOTICUS_PREFABS'] and default directory require_once 'lib/WikiPluginCached.php'; class WikiPlugin_Ploticus extends WikiPluginCached { /** * Sets plugin type to MAP if -csmap (-map or -mapdemo or -csmapdemo not supported) * or HTML if the imagetype is not supported by GD (EPS, SVG, SVGZ) (not yet) * or IMG_INLINE if device = png, gif or jpeg */ function getPluginType() { if (!empty($this->_args['-csmap'])) return PLUGIN_CACHED_MAP; // not yet tested // produce these on-demand so far, uncached. // will get better support in WikiPluginCached soon. // FIXME: html also? what about ''? $type = $this->decideImgType($this->_args['device']); if ($type == $this->_args['device']) return PLUGIN_CACHED_IMG_INLINE; $device = strtolower($this->_args['device']); if (in_array($device, array('svg', 'swf', 'svgz', 'eps', 'ps', 'pdf', 'html'))) { switch ($this->_args['device']) { case 'svg': case 'svgz': return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_SVG_PNG; case 'swf': return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_SWF; default: return PLUGIN_CACHED_STATIC | PLUGIN_CACHED_HTML; } } else return PLUGIN_CACHED_IMG_INLINE; // normal cached libgd image handles } function getName() { return _("Ploticus"); } function getDescription() { return _("Ploticus image creation."); } function managesValidators() { return true; } function getDefaultArguments() { return array( 'device' => 'png', // png,gif,svgz,svg,... '-prefab' => '', '-csmap' => false, 'data' => false, // support 'alt' => false, 'help' => false, ); } function handle_plugin_args_cruft(&$argstr, &$args) { $this->source = $argstr; } /** * Sets the expire time to one day (so the image producing * functions are called seldomly) or to about two minutes * if a help screen is created. */ function getExpire($dbi, $argarray, $request) { if (!empty($argarray['help'])) return '+120'; // 2 minutes return sprintf('+%d', 3 * 86000); // approx 3 days } /** * Sets the imagetype according to user wishes and * relies on WikiPluginCached to catch illegal image * formats. * (I feel unsure whether this option is reasonable in * this case, because png will definitely have the * best results.) * * @param WikiDB $dbi * @param array $argarray * @param Request $request * @return string 'png', 'jpeg', 'gif' */ function getImageType($dbi, $argarray, $request) { return $argarray['device']; } /** * This gives an alternative text description of * the image. */ function getAlt($dbi, $argstr, $request) { return (!empty($this->_args['alt'])) ? $this->_args['alt'] : $this->getDescription(); } /** * Returns an image containing a usage description of the plugin. * * TODO: -csmap pointing to the Ploticus documentation at sf.net. * @return string image handle */ function helpImage() { $def = $this->defaultArguments(); //$other_imgtypes = $GLOBALS['PLUGIN_CACHED_IMGTYPES']; //unset ($other_imgtypes[$def['imgtype']]); $helparr = array( '< ' = "' . $def['device'] . "(default)|" . join('|', $GLOBALS['PLUGIN_CACHED_IMGTYPES']) . '"', 'data' => ' : pagelist as input', 'alt' => ' = "alternate text"', '-csmap' => ' bool: clickable map?', 'help' => ' bool: displays this screen', '...' => ' all further lines below the first plugin line ', '' => ' and inside the tags are the ploticus script.', "\n >>" ); $length = 0; foreach ($helparr as $alignright => $alignleft) { $length = max($length, strlen($alignright)); } $helptext = ''; foreach ($helparr as $alignright => $alignleft) { $helptext .= substr(' ' . $alignright, -$length) . $alignleft . "\n"; } return $this->text2img($helptext, 4, array(1, 0, 0), array(255, 255, 255)); } function withShellCommand($script) { $findme = 'shell'; $pos = strpos($script, $findme); // uppercase? if ($pos === false) return 0; return 1; } function getImage($dbi, $argarray, $request) { //extract($this->getArgs($argstr, $request)); //extract($argarray); $source =& $this->source; if (!empty($source)) { if ($this->withShellCommand($source)) { $this->_errortext .= _("shell commands not allowed in Ploticus"); return false; } if (is_array($argarray['data'])) { // support pagelists $src = "#proc getdata\ndata:"; $i = 0; foreach ($argarray['data'] as $data) { // hash or array? if (is_array($data)) $src .= ("\t" . join(" ", $data) . "\n"); else $src .= ("\t" . '"' . $data . '" ' . $i++ . "\n"); } $src .= $source; $source = $src; } $tempfile = $this->tempnam('Ploticus', 'plo'); @unlink($tempfile); $gif = $argarray['device']; $args = "-$gif -o $tempfile.$gif"; if (!empty($argarray['-csmap'])) { $args .= " -csmap -mapfile $tempfile.map"; $this->_mapfile = "$tempfile.map"; } if (!empty($argarray['-prefab'])) { //check $_ENV['PLOTICUS_PREFABS'] and default directory global $HTTP_ENV_VARS; if (empty($HTTP_ENV_VARS['PLOTICUS_PREFABS'])) { if (file_exists("/usr/share/ploticus")) $HTTP_ENV_VARS['PLOTICUS_PREFABS'] = "/usr/share/ploticus"; elseif (defined('PLOTICUS_PREFABS')) $HTTP_ENV_VARS['PLOTICUS_PREFABS'] = constant('PLOTICUS_PREFABS'); } $args .= (" -prefab " . $argarray['-prefab']); } if (isWindows()) { $fp = fopen("$tempfile.plo", "w"); fwrite($fp, $source); fclose($fp); $code = $this->execute(PLOTICUS_EXE . " $tempfile.plo $args", $tempfile . ".$gif"); } else { $code = $this->filterThroughCmd($source, PLOTICUS_EXE . " -stdin $args"); sleep(1); } //if (empty($code)) // return $this->error(fmt("Couldn't start commandline “%s”", $commandLine)); if (!file_exists($tempfile . ".$gif")) { $this->_errortext .= sprintf(_("%s error: outputfile “%s” not created"), "Ploticus", "$tempfile.$gif"); if (isWindows()) $this->_errortext .= ("\ncmd-line: " . PLOTICUS_EXE . " $tempfile.plo $args"); else $this->_errortext .= ("\ncmd-line: cat script | " . PLOTICUS_EXE . " $args"); @unlink("$tempfile.pl"); @unlink("$tempfile"); return false; } $ImageCreateFromFunc = "ImageCreateFrom$gif"; if (function_exists($ImageCreateFromFunc)) { $handle = $ImageCreateFromFunc("$tempfile.$gif"); if ($handle) { @unlink("$tempfile.$gif"); @unlink("$tempfile.plo"); @unlink("$tempfile"); return $handle; } } return "$tempfile.$gif"; } else { return $this->error(fmt("empty source")); } } // which argument must be set to 'png', for the fallback image when svg will fail on the client. // type: SVG_PNG function pngArg() { return 'device'; } function getMap($dbi, $argarray, $request) { $img = $this->getImage($dbi, $argarray, $request); return array($this->_mapfile, $img); } } // Local Variables: // mode: php // tab-width: 8 // c-basic-offset: 4 // c-hanging-comment-ender-p: nil // indent-tabs-mode: nil // End: