<?php
/**
* @version              $Id: loadmodule.php 10381 2008-06-01 03:35:53Z pasamio $
* @package              Joomla
* @copyright    Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
* @license              GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

$mainframe->registerEvent( 'onPrepareContent', 'plgContentLoadModule' );
die();

/**
* Plugin that loads module positions within content
*/
function plgContentLoadModule( &$row, &$params, $page=0 )
{
        $db =& JFactory::getDBO();
        // simple performance check to determine whether bot should process further
        if ( JString::strpos( $row->text, 'loadposition' ) === false ) {
                return true;
        }

        // Get plugin info
        $plugin =& JPluginHelper::getPlugin('content', 'loadmodule');

        // expression to search for
        $regex = '/{loadposition\s*.*?}/i';

        $pluginParams = new JParameter( $plugin->params );

        // check whether plugin has been unpublished
        if ( !$pluginParams->get( 'enabled', 1 ) ) {
                $row->text = preg_replace( $regex, '', $row->text );
                return true;
        }

        // find all instances of plugin and put in $matches
        preg_match_all( $regex, $row->text, $matches );

        // Number of plugins
        $count = count( $matches[0] );

        // plugin only processes if there are any instances of the plugin in the text
        if ( $count ) {
                // Get plugin parameters
                $style  = $pluginParams->def( 'style', -2 );

                plgContentProcessPositions( $row, $matches, $count, $regex, $style );
        }
}

function plgContentProcessPositions ( &$row, &$matches, $count, $regex, $style )
{
        for ( $i=0; $i < $count; $i++ )
        {
                $load = str_replace( 'loadposition', '', $matches[0][$i] );
                $load = str_replace( '{', '', $load );
                $load = str_replace( '}', '', $load );
                $load = trim( $load );

                $modules        = plgContentLoadPosition( $load, $style );
                $row->text      = preg_replace( '{'. $matches[0][$i] .'}', $modules, $row->text );
        }

        // removes tags without matching module positions
        $row->text = preg_replace( $regex, '', $row->text );
}

function plgContentLoadPosition( $position, $style=-2 )
{
        $document       = &JFactory::getDocument();
        $renderer       = $document->loadRenderer('module');
        $params         = array('style'=>$style);

        $contents = '';
        foreach (JModuleHelper::getModules($position) as $mod)  {
                $contents .= $renderer->render($mod, $params);
        }
        return $contents;
}