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<?php
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/**
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*
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* @category module
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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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* @copyright 2009-2011, Website Baker Org. e.V.
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* @link http://www.websitebaker2.org/
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* @license http://www.gnu.org/licenses/gpl.html
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* @platform WebsiteBaker 2.8.x
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* * @requirements PHP 5.2.2 and higher
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* @version $Id: droplets.php 1373 2011-01-10 12:14:10Z Luisehahne $
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* @filesource $HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/modules/droplets/droplets.php $
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* @lastmodified $Date: 2011-01-10 13:14:10 +0100 (Mon, 10 Jan 2011) $
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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¶meter2=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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* 1.0.3, optimize, reduce memory consumption, increase speed, remove CSS, enable nested droplets
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*
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*/
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function 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($value, ENT_COMPAT,DEFAULT_CHARSET);
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}
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}
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}
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else
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{
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// no arguments given, so
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$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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} // 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, $wb_page_data);
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}
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// returns TRUE if droplets found in content, FALSE if not
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return( count($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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?>
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