<?php
/**
 * Class includer: Pat
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

/**
 * Class includer: Pat
 *
 * pat* classes are stored in special folder structure, given that 
 * they are housed in different subversion repositories.
 *
 * Actually, this class loaded is used very rarely, since pat*-classes implement
 * their own module loading facility. Used only on explicit call of WBClass::load('pat*');
 *
 * @version 0.2.0
 * @package WB
 * @subpackage base
 */
class WBClass_Loader_Pat extends WBClass_Loader
{    
    /**
     * Load named class
     *
     * @param string $clazz
     * @return bool true if class could be loaded 
     */
    public function load($clazz)
    {
        $clazz      =   substr($clazz, strlen($this->prefix));

        // patErrorManager is part of package patError
        if ('ErrorManager' == $clazz) {
            $clazz  =   'Error';
            if (class_exists('patError', false)) {
                return true;
            }
        }
        
        $path   =   explode('_', $clazz, 2);
        foreach ($this->incDir as $dir) {
            // try to load from extension folder
            $file   =   $dir . '/patEx/' . str_replace('_', '/', $clazz) . '.php';
            if (!file_exists($file)) {
                // try to load from original folder
                $file   =   $dir . '/pat' . $path[0] . '/pat' . str_replace('_', '/', $clazz) . '.php';
            }
            if (!file_exists($file)) {
                continue;
            }
            include $file;
            
            // include ErrorManager as well
            if ('Error' == $clazz) {
                $file   =   $dir . '/patError/patErrorManager.php';
                include $file;
            }
            return true;
        }
        
        return false;
    }
}