/halogy/libraries/Config.php

  1<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  2/**
  3 * CodeIgniter
  4 *
  5 * An open source application development framework for PHP 4.3.2 or newer
  6 *
  7 * @package		CodeIgniter
  8 * @author		ExpressionEngine Dev Team
  9 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 10 * @license		http://codeigniter.com/user_guide/license.html
 11 * @link		http://codeigniter.com
 12 * @since		Version 1.0
 13 * @filesource
 14 */
 15
 16// ------------------------------------------------------------------------
 17
 18/**
 19 * CodeIgniter Config Class
 20 *
 21 * This class contains functions that enable config files to be managed
 22 *
 23 * @package		CodeIgniter
 24 * @subpackage	Libraries
 25 * @category	Libraries
 26 * @author		ExpressionEngine Dev Team
 27 * @link		http://codeigniter.com/user_guide/libraries/config.html
 28 */
 29class CI_Config {
 30
 31	var $config = array();
 32	var $is_loaded = array();
 33
 34	/**
 35	 * Constructor
 36	 *
 37	 * Sets the $config data from the primary config.php file as a class variable
 38	 *
 39	 * @access   public
 40	 * @param   string	the config file name
 41	 * @param   boolean  if configuration values should be loaded into their own section
 42	 * @param   boolean  true if errors should just return false, false if an error message should be displayed
 43	 * @return  boolean  if the file was successfully loaded or not
 44	 */
 45	function CI_Config()
 46	{
 47		$this->config =& get_config();
 48		log_message('debug', "Config Class Initialized");
 49	}
 50  	
 51	// --------------------------------------------------------------------
 52
 53	/**
 54	 * Load Config File
 55	 *
 56	 * @access	public
 57	 * @param	string	the config file name
 58	 * @return	boolean	if the file was loaded correctly
 59	 */	
 60	function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
 61	{
 62		$file = ($file == '') ? 'config' : str_replace(EXT, '', $file);
 63	
 64		if (in_array($file, $this->is_loaded, TRUE))
 65		{
 66			return TRUE;
 67		}
 68
 69		if ( ! file_exists(APPPATH.'config/'.$file.EXT))
 70		{
 71			if ($fail_gracefully === TRUE)
 72			{
 73				return FALSE;
 74			}
 75			show_error('The configuration file '.$file.EXT.' does not exist.');
 76		}
 77	
 78		include(APPPATH.'config/'.$file.EXT);
 79
 80		if ( ! isset($config) OR ! is_array($config))
 81		{
 82			if ($fail_gracefully === TRUE)
 83			{
 84				return FALSE;
 85			}
 86			show_error('Your '.$file.EXT.' file does not appear to contain a valid configuration array.');
 87		}
 88
 89		if ($use_sections === TRUE)
 90		{
 91			if (isset($this->config[$file]))
 92			{
 93				$this->config[$file] = array_merge($this->config[$file], $config);
 94			}
 95			else
 96			{
 97				$this->config[$file] = $config;
 98			}
 99		}
100		else
101		{
102			$this->config = array_merge($this->config, $config);
103		}
104
105		$this->is_loaded[] = $file;
106		unset($config);
107
108		log_message('debug', 'Config file loaded: config/'.$file.EXT);
109		return TRUE;
110	}
111  	
112	// --------------------------------------------------------------------
113
114	/**
115	 * Fetch a config file item
116	 *
117	 *
118	 * @access	public
119	 * @param	string	the config item name
120	 * @param	string	the index name
121	 * @param	bool
122	 * @return	string
123	 */
124	function item($item, $index = '')
125	{	
126		if ($index == '')
127		{	
128			if ( ! isset($this->config[$item]))
129			{
130				return FALSE;
131			}
132
133			$pref = $this->config[$item];
134		}
135		else
136		{
137			if ( ! isset($this->config[$index]))
138			{
139				return FALSE;
140			}
141
142			if ( ! isset($this->config[$index][$item]))
143			{
144				return FALSE;
145			}
146
147			$pref = $this->config[$index][$item];
148		}
149
150		return $pref;
151	}
152  	
153  	// --------------------------------------------------------------------
154
155	/**
156	 * Fetch a config file item - adds slash after item
157	 *
158	 * The second parameter allows a slash to be added to the end of
159	 * the item, in the case of a path.
160	 *
161	 * @access	public
162	 * @param	string	the config item name
163	 * @param	bool
164	 * @return	string
165	 */
166	function slash_item($item)
167	{
168		if ( ! isset($this->config[$item]))
169		{
170			return FALSE;
171		}
172
173		$pref = $this->config[$item];
174
175		if ($pref != '' && substr($pref, -1) != '/')
176		{	
177			$pref .= '/';
178		}
179
180		return $pref;
181	}
182  	
183	// --------------------------------------------------------------------
184
185	/**
186	 * Site URL
187	 *
188	 * @access	public
189	 * @param	string	the URI string
190	 * @return	string
191	 */
192	function site_url($uri = '')
193	{
194		if (is_array($uri))
195		{
196			$uri = implode('/', $uri);
197		}
198
199		if ($uri == '')
200		{
201			return $this->slash_item('base_url').$this->item('index_page');
202		}
203		else
204		{
205			$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
206			return $this->slash_item('base_url').$this->slash_item('index_page').trim($uri, '/').$suffix; 
207		}
208	}
209	
210	// --------------------------------------------------------------------
211
212	/**
213	 * System URL
214	 *
215	 * @access	public
216	 * @return	string
217	 */
218	function system_url()
219	{
220		$x = explode("/", preg_replace("|/*(.+?)/*$|", "\\1", BASEPATH));
221		return $this->slash_item('base_url').end($x).'/';
222	}
223  	
224	// --------------------------------------------------------------------
225
226	/**
227	 * Set a config file item
228	 *
229	 * @access	public
230	 * @param	string	the config item key
231	 * @param	string	the config item value
232	 * @return	void
233	 */
234	function set_item($item, $value)
235	{
236		$this->config[$item] = $value;
237	}
238
239}
240
241// END CI_Config class
242
243/* End of file Config.php */
244/* Location: ./system/libraries/Config.php */