AppHelper replacement to use named urls like @prefix_plugin_controller_action

app_helper.php

<?php
/**
 * Short description for file.
 *
 * This file is application-wide helper file. You can put all
 * application-wide helper-related methods here.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake
 * @since         CakePHP(tm) v 0.2.9
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
App::import('Helper', 'Helper', false);

/**
 * This is a placeholder class.
 * Create the same file in app/app_helper.php
 *
 * Add your application-wide methods in the class below, your helpers
 * will inherit them.
 *
 * @package       cake
 * @subpackage    cake.cake
 */
class AppHelper extends Helper {

	var $plugins = null;

	function url($url = null, $full = false) {
		// Check to see if this is a special linked url
		if (is_string($url) && substr($url, 0, 1) == '@') {
			// Lets split up the url by /
			$url_keys = explode('/', substr($url, 1));
			$url = array();
			if (in_array($url_keys['0'], Configure::read('Routing.prefixes'))) {
				// We have a prefix
				$url['prefix'] = array_shift($url_keys);
				$url[$url['prefix']] = true;
			}
			if (in_array($url_keys['0'], $this->_pluginList())) {
				// We have a prefix
				$url['plugin'] = array_shift($url_keys);
			}
			$url['controller'] = array_shift($url_keys);
			$url['action'] = (empty($url_keys)) ? 'index' : array_shift($url_keys);
			foreach ($url_keys as $url_key) {
				$url[] = $url_key;
			}
		}
		return parent::url($url, $full);
	}

	function _pluginList() {
		if ($this->plugins) return $this->plugins;

		if (($this->plugins = Cache::read('helper.plugins')) == false) {
			App::import('Core', 'File', 'Folder');
			$paths = Configure::getInstance();
			$folder =& new Folder();
			$folder->cd(APP . 'plugins');

			// Get the list of plugins
			$Plugins = $folder->read();
			Cache::write('helper.plugins', $Plugins['0']);
 			$this->plugins = $Plugins['0'];
		}
		return $this->plugins;
	}
}
?>