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2005 Aurelien 1 
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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 * CodeIgniter
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 *
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 * An open source application development framework for PHP 4.3.2 or newer
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 *
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 * @package		CodeIgniter
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 * @author		ExpressionEngine Dev Team
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 * @copyright	Copyright (c) 2008, EllisLab, Inc.
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 * @license		http://codeigniter.com/user_guide/license.html
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 * @link		http://codeigniter.com
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 * @since		Version 1.0
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 * @filesource
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 */
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// ------------------------------------------------------------------------
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/**
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 * CodeIgniter Config Class
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 *
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 * This class contains functions that enable config files to be managed
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 *
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 * @package		CodeIgniter
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 * @subpackage	Libraries
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 * @category	Libraries
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 * @author		ExpressionEngine Dev Team
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 * @link		http://codeigniter.com/user_guide/libraries/config.html
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 */
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class CI_Config {
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	var $config = array();
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	var $is_loaded = array();
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	/**
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	 * Constructor
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	 *
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	 * Sets the $config data from the primary config.php file as a class variable
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	 *
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	 * @access   public
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	 * @param   string	the config file name
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	 * @param   boolean  if configuration values should be loaded into their own section
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	 * @param   boolean  true if errors should just return false, false if an error message should be displayed
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	 * @return  boolean  if the file was successfully loaded or not
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	 */
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	function CI_Config()
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	{
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		$this->config =& get_config();
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		log_message('debug', "Config Class Initialized");
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	}
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	// --------------------------------------------------------------------
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	/**
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	 * Load Config File
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	 *
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	 * @access	public
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	 * @param	string	the config file name
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	 * @return	boolean	if the file was loaded correctly
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	 */
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	function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
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	{
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		$file = ($file == '') ? 'config' : str_replace(EXT, '', $file);
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		if (in_array($file, $this->is_loaded, TRUE))
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		{
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			return TRUE;
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		}
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		if ( ! file_exists(APPPATH.'config/'.$file.EXT))
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		{
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			if ($fail_gracefully === TRUE)
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			{
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				return FALSE;
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			}
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			show_error('The configuration file '.$file.EXT.' does not exist.');
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		}
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		include(APPPATH.'config/'.$file.EXT);
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		if ( ! isset($config) OR ! is_array($config))
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		{
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			if ($fail_gracefully === TRUE)
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			{
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				return FALSE;
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			}
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			show_error('Your '.$file.EXT.' file does not appear to contain a valid configuration array.');
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		}
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		if ($use_sections === TRUE)
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		{
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			if (isset($this->config[$file]))
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			{
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				$this->config[$file] = array_merge($this->config[$file], $config);
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			}
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			else
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			{
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				$this->config[$file] = $config;
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			}
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		}
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		else
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		{
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			$this->config = array_merge($this->config, $config);
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		}
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		$this->is_loaded[] = $file;
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		unset($config);
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		log_message('debug', 'Config file loaded: config/'.$file.EXT);
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		return TRUE;
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	}
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	// --------------------------------------------------------------------
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	/**
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	 * Fetch a config file item
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	 *
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	 *
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	 * @access	public
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	 * @param	string	the config item name
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	 * @param	string	the index name
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	 * @param	bool
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	 * @return	string
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	 */
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	function item($item, $index = '')
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	{
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		if ($index == '')
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		{
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			if ( ! isset($this->config[$item]))
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			{
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				return FALSE;
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			}
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			$pref = $this->config[$item];
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		}
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		else
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		{
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			if ( ! isset($this->config[$index]))
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			{
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				return FALSE;
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			}
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			if ( ! isset($this->config[$index][$item]))
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			{
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				return FALSE;
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			}
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			$pref = $this->config[$index][$item];
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		}
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		return $pref;
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	}
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  	// --------------------------------------------------------------------
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	/**
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	 * Fetch a config file item - adds slash after item
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	 *
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	 * The second parameter allows a slash to be added to the end of
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	 * the item, in the case of a path.
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	 *
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	 * @access	public
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	 * @param	string	the config item name
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	 * @param	bool
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	 * @return	string
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	 */
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	function slash_item($item)
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	{
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		if ( ! isset($this->config[$item]))
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		{
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			return FALSE;
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		}
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		$pref = $this->config[$item];
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		if ($pref != '' && substr($pref, -1) != '/')
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		{
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			$pref .= '/';
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		}
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		return $pref;
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	}
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	// --------------------------------------------------------------------
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	/**
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	 * Site URL
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	 *
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	 * @access	public
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	 * @param	string	the URI string
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	 * @return	string
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	 */
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	function site_url($uri = '')
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	{
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		if (is_array($uri))
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		{
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			$uri = implode('/', $uri);
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		}
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		if ($uri == '')
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		{
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			return $this->slash_item('base_url').$this->item('index_page');
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		}
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		else
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		{
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			$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
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			return $this->slash_item('base_url').$this->slash_item('index_page').preg_replace("|^/*(.+?)/*$|", "\\1", $uri).$suffix;
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		}
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	}
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	// --------------------------------------------------------------------
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	/**
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	 * System URL
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	 *
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	 * @access	public
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	 * @return	string
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	 */
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	function system_url()
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	{
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		$x = explode("/", preg_replace("|/*(.+?)/*$|", "\\1", BASEPATH));
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		return $this->slash_item('base_url').end($x).'/';
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	}
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	// --------------------------------------------------------------------
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	/**
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	 * Set a config file item
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	 *
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	 * @access	public
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	 * @param	string	the config item key
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	 * @param	string	the config item value
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	 * @return	void
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	 */
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	function set_item($item, $value)
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	{
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		$this->config[$item] = $value;
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	}
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}
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// END CI_Config class
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/* End of file Config.php */
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/* Location: ./system/libraries/Config.php */