<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * Loader Class
 *
 * Loads views and files
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @author		ExpressionEngine Dev Team
 * @category	Loader
 * @link		http://codeigniter.com/user_guide/libraries/loader.html
 */
class CI_Loader {

	// All these are set automatically. Don't mess with them.
	var $_ci_ob_level;
	var $_ci_view_path		= '';
	var $_ci_is_php5		= FALSE;
	var $_ci_is_instance 	= FALSE; // Whether we should use $this or $CI =& get_instance()
	var $_ci_cached_vars	= array();
	var $_ci_classes		= array();
	var $_ci_loaded_files	= array();
	var $_ci_models			= array();
	var $_ci_helpers		= array();
	var $_ci_plugins		= array();
	var $_ci_varmap			= array('unit_test' => 'unit', 'user_agent' => 'agent');
	

	/**
	 * Constructor
	 *
	 * Sets the path to the view files and gets the initial output buffering level
	 *
	 * @access	public
	 */
	function CI_Loader()
	{	
		$this->_ci_is_php5 = (floor(phpversion()) >= 5) ? TRUE : FALSE;
		$this->_ci_view_path = APPPATH.'views/';
		$this->_ci_ob_level  = ob_get_level();
				
		log_message('debug', "Loader Class Initialized");
	}
	
	// --------------------------------------------------------------------
	
	/**
	 * Class Loader
	 *
	 * This function lets users load and instantiate classes.
	 * It is designed to be called from a user's app controllers.
	 *
	 * @access	public
	 * @param	string	the name of the class
	 * @param	mixed	the optional parameters
	 * @param	string	an optional object name
	 * @return	void
	 */	
	function library($library = '', $params = NULL, $object_name = NULL)
	{
		if ($library == '')
		{
			return FALSE;
		}

		if ( ! is_null($params) AND ! is_array($params))
		{
			$params = NULL;
		}

		if (is_array($library))
		{
			foreach ($library as $class)
			{
				$this->_ci_load_class($class, $params, $object_name);
			}
		}
		else
		{
			$this->_ci_load_class($library, $params, $object_name);
		}
		
		$this->_ci_assign_to_models();