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<?php
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// $Id: droplets.php 991 2009-06-15 15:55:20Z Ruebenwurzel $
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/*
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*	@version	1.0
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*	@author		Ruud Eisinga (Ruud) John (PCWacht)
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*	@date		June 2009
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*
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*	droplets are small codeblocks that are called from anywhere in the template. 
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* 	To call a droplet just use [[dropletname]]. optional parameters for a droplet can be used like [[dropletname?parameter=value&parameter2=value]]
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*/
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function evalDroplets ($wb_page_data) {
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	global $database;
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	$parameter = array();
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	preg_match_all('~\[\[(.*?)\]\]~', $wb_page_data, $matches);
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	foreach ($matches[1] as $match) {
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		if (strpos($match,"?")) {
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			list ($droplet,$params) = explode("?",$match);
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			if(!empty($params)) {
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				$params = str_replace("&amp;", "&", $params); // replace &amp; to single &
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				$paramarray = explode("&",$params); //create array of parms as parm=value
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				foreach ($paramarray as $paramelement) {
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					$parameterTemp = explode("=", $paramelement,2);
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					if (count($parameterTemp) == 2)
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						$parameter[$parameterTemp[0]] = $parameterTemp[1];
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					else
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						$parameter['parm'] = $parameterTemp[0];
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				}
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			}
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		} else {
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			$droplet = $match;
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			$parameter = "";
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		}
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		$query_content = $database->query("SELECT * FROM ".TABLE_PREFIX."mod_droplets WHERE name = '$droplet' AND active = 1 ");
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		if ($query_content && $query_content->numRows() > 0){
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			$fetch_content = $query_content->fetchRow();
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			$codedata = ($fetch_content['code']);
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			if(is_array($parameter)) extract($parameter, EXTR_SKIP);
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			$newvalue = eval($codedata);
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			if ($newvalue == "" && !$newvalue === true) 
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				$newvalue = "<font color=\"red\">Error in: $match, no correct returnvalue.</font>";
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			if ($newvalue === true) 
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				$newvalue = "";
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			$wb_page_data = str_replace("[[".$match."]]", $newvalue, $wb_page_data);
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		}
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	}
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	return $wb_page_data;
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}
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?>
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