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<?php
/**
* Wick Library
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @package Incendiary
* @copyright 2007-2008 Zacharias Knudsen
* @license http://www.gnu.org/licenses/lgpl.html
* @version $Id: Wick.php 32 2008-08-22 15:13:43Z zdknudsen $
*/
if (!defined('BASEPATH')) {
exit('No direct script access allowed');
}
/**
* Provides a method for loading uris
*
* @package Incendiary
* @copyright 2007-2008 Zacharias Knudsen
* @license http://www.gnu.org/licenses/lgpl.html
*/
class Wick
{
/**
* Queue of running controllers
*
* @var array
* @access private
*/
var $_queue = array();
/**
* Registry of loaded controllers
*
* @var array
* @access private
*/
var $_registry = array();
/**
* Registrates current instance
*
* @return void
* @access public
*/
function Wick()
{
$ci = get_instance();
$class = strtolower(get_class($ci));
$this->_registry[$class] = &$ci;
$this->_queue[] = &$this->_registry[$class];
// Logs initialization message for debugging
log_message('debug', 'Wick Class Initialized');
}
/**
* Lights the wick of a given uri
*
* @param mixed
* @return void
* @access public
*/
function light($segments = array())
{
// Arrayify whatever needs arrayifying
if (!is_array($segments)) {
$segments = explode('/', $segments);
}
// We need stock libraries for native routing
$router = &load_class('Router');
$uri = &load_class('URI');
$router->_set_request($segments);
// Setting a few variables for later (and immediate) use
$class = $router->fetch_class();
$directory = $router->fetch_directory();
$method = $router->fetch_method();
$path = APPPATH . 'controllers/' . $directory . $class . EXT;
// No need to load the file if it's already in memory
if (!class_exists($class)) {
include_once($path);
}
// I disapprove!
if (!class_exists($class) || $method == 'controller' || strncmp($method, '_', 1) == 0 || in_array($method, get_class_methods('Controller'), true)) {
show_error('Wick could not light ' . $class . '/' . $method . ', either the class does not exist or the method is protected.');
}
// Fetches controller from registry or creates new one
if (isset($this->_registry[$class])) {
$controller = &$this->_registry[$class];
} else {
$controller = &new $class();
$this->_registry[$class] = &$controller;
}
$this->_queue[] = &$controller;
// Throws error if method doesn't exist
if (!in_array(strtolower($method), array_map('strtolower', get_class_methods($controller)))) {
show_error('Wick could not light "' . $class . '/' . $method . '". The method doesn\'t exist.');
}
// Tranfers data into the controller, calls it
// and transfers data back into the previous one
$ci = &$this->_transfer($controller);
$return = call_user_func_array(array(&$ci, $method), array_slice($uri->rsegments, 2));
$this->_transfer(&$this->_queue[count($this->_queue)-1]);
// Pops the controller off the queue
array_pop($this->_queue);
// Returns whatever the mighty controller fancies
return $return;
}
/**
* Transfers variables from one object to another
*
* @param object
* @param object
* @return void
* @access private
*/
function &_transfer(&$to)
{
$ci = &get_instance();
foreach (array_keys(get_object_vars($ci)) as $variable) {
$to->$variable = &$ci->$variable;
}
$ci = $to;
return $ci;
}
}
/* End of file Wick.php */
/* Location: ./system/application/libraries/Wick.php */