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Revision 1301

Added by Luisehahne over 15 years ago

Tickets #932 change deprecated eregi functions
Tickets #948 fixed Multiple use of same parametrised droplet - parameter handling
Upgrade Droplets to Version 1.0.3
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droplets.php
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/**
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 *
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 * @category        module
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 * @package         droplet
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 * @package         droplets
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 * @author          Ruud Eisinga (Ruud) John (PCWacht)
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 * @author          WebsiteBaker Project
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 * @copyright       2004-2009, Ryan Djurovich
......
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 * @filesource		$HeadURL$
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 * @lastmodified    $Date$
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 *
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 */
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/*


  		




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 *	@version	1.0.2


  		




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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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 *  1.0.2, bugfix. Reused the evalDroplet function so the extracted parameters will be only available within the scope of the eval and cleared when ready.


  		




  
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 *  1.0.2, bugfix, Reused the evalDroplet function so the extracted parameters will be only available within the scope of the eval and cleared when ready.


  		




  
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 *  1.0.3, optimize, reduce memory consumption, increase speed, remove CSS, enable nested droplets


  		




  
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 *


  		




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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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				$params = html_entity_decode($params,ENT_COMPAT,DEFAULT_CHARSET); // make sure we can parse the parameters correctly


  		




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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]] = htmlentities($parameterTemp[1],ENT_COMPAT,DEFAULT_CHARSET); //re-encode the parameter values


  		




  
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	function do_eval($_x_codedata, $_x_varlist, &$wb_page_data)


  		




  
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	{


  		




  
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		extract($_x_varlist, EXTR_SKIP);


  		




  
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		return(eval($_x_codedata));


  		




  
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	}


  		




  
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	function processDroplets( &$wb_page_data ) {


  		




  
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// collect all droplets from document


  		




  
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		$droplet_tags = array();


  		




  
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		$droplet_replacements = array();


  		




  
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		if( preg_match_all( '/\[\[(.*?)\]\]/', $wb_page_data, $found_droplets ) )


  		




  
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		{


  		




  
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			foreach( $found_droplets[1] as $droplet )


  		




  
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			{


  		




  
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				if(array_key_exists( '[['.$droplet.']]', $droplet_tags) == false)


  		




  
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				{


  		




  
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// go in if same droplet with same arguments is not processed already


  		




  
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					$varlist = array();


  		




  
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// split each droplet command into droplet_name and request_string


  		




  
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					$tmp = preg_split('/\?/', $droplet, 2);


  		




  
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					$droplet_name = $tmp[0];


  		




  
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					$request_string = (isset($tmp[1]) ? $tmp[1] : '');


  		




  
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					if( $request_string != '' )


  		




  
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					{


  		




  
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// make sure we can parse the arguments correctly


  		




  
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						$request_string = html_entity_decode($request_string, ENT_COMPAT,DEFAULT_CHARSET);


  		




  
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// create array of arguments from query_string


  		




  
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						$argv = preg_split( '/&(?!amp;)/', $request_string );


  		




  
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						foreach ($argv as $argument)


  		




  
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						{


  		




  
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// split argument in pair of varname, value


  		




  
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							list( $variable, $value ) = explode('=', $argument,2);


  		




  
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							if( !empty($value) )


  		




  
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							{


  		




  
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// re-encode the value and push the var into varlist


  		




  
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								$varlist[$variable] = htmlentities($value, ENT_COMPAT,DEFAULT_CHARSET);


  		




  
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							}


  		




  
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						}


  		




  
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					}


  		




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					else


  		




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						$parameter['parm'] = htmlentities($parameterTemp[0],ENT_COMPAT,DEFAULT_CHARSET);


  		




  
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					{


  		




  
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// no arguments given, so


  		




  
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						$droplet_name = $droplet;


  		




  
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					}


  		




  
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// request the droplet code from database


  		




  
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					$sql = 'SELECT `code` FROM `'.TABLE_PREFIX.'mod_droplets` WHERE `name` LIKE "'.$droplet_name.'" AND `active` = 1';


  		




  
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					$codedata = $GLOBALS['database']->get_one($sql);


  		




  
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					if (!is_null($codedata))


  		




  
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					{


  		




  
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						$newvalue = do_eval($codedata, $varlist, $wb_page_data);


  		




  
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// check returnvalue (must be a string of 1 char at least or (bool)true


  		




  
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						if ($newvalue == '' && $newvalue !== true)


  		




  
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						{


  		




  
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							if(DEBUG === true)


  		




  
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							{


  		




  
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								$newvalue = '<span class="mod_droplets_err">Error in: '.$droplet.', no valid returnvalue.</span>';


  		




  
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							}


  		




  
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							else


  		




  
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							{


  		




  
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								$newvalue = true;


  		




  
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							}


  		




  
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						}


  		




  
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						if ($newvalue === true) { $newvalue = ""; }


  		




  
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// remove any defined CSS section from code. For valid XHTML a CSS-section is allowed inside <head>...</head> only!


  		




  
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						$newvalue = preg_replace('/<style.*>.*<\/style>/siU', '', $newvalue);


  		




  
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// push droplet-tag and it's replacement into Search/Replace array after executing only


  		




  
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						$droplet_tags[]         = '[['.$droplet.']]';


  		




  
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						$droplet_replacements[] = $newvalue;


  		




  
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					}


  		




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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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			}	// End foreach( $found_droplets[1] as $droplet )


  		




  
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// replace each Droplet-Tag with coresponding $newvalue


  		




  
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			$wb_page_data = str_replace($droplet_tags, $droplet_replacements, $wb_page_data);


  		




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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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			$newvalue = evalDroplet($codedata, $parameter, $wb_page_data);


  		




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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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// returns TRUE if droplets found in content, FALSE if not


  		




  
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		return( count($droplet_tags)!=0 );


  		




  
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	}


  		




  
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	function evalDroplets( &$wb_page_data, $max_loops = 3 ) {


  		




  
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		$max_loops = ((int)$max_loops = 0 ? 3 : (int)$max_loops);


  		




  
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		while( (processDroplets($wb_page_data) == true) && ($max_loops > 0))


  		




  
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		{ 


  		




  
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			$max_loops--;


  		




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		}


  		




  
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		return $wb_page_data;


  		




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	}


  		




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	return $wb_page_data;


  		




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}


  		




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function evalDroplet($droplet, $params, &$wb_page_data) {


  		




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    if(is_array($params)) extract($params, EXTR_SKIP);


  		




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	return eval($droplet);


  		




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}


  		




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?>


  		












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