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Config.php

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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

* CodeIgniter

*

* An open source application development framework for PHP 5.1.6 or newer

*

* @package CodeIgniter

* @author ExpressionEngine Dev Team

* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.

* @license http://codeigniter.com/user_guide/license.html

* @link http://codeigniter.com

* @since Version 1.0

* @filesource

*/

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

/**

* CodeIgniter Config Class

*

* This class contains functions that enable config files to be managed

*

* @package CodeIgniter

* @subpackage Libraries

* @category Libraries

* @author ExpressionEngine Dev Team

* @link http://codeigniter.com/user_guide/libraries/config.html

*/

class CI_Config {

/**

* List of all loaded config values

*

* @var array

*/

var $config = array();

/**

* List of all loaded config files

*

* @var array

*/

var $is_loaded = array();

/**

* List of paths to search when trying to load a config file

*

* @var array

*/

var $_config_paths = array(APPPATH);

/**

* Constructor

*

* Sets the $config data from the primary config.php file as a class variable

*

* @access public

* @param string the config file name

* @param boolean if configuration values should be loaded into their own section

* @param boolean true if errors should just return false, false if an error message should be displayed

* @return boolean if the file was successfully loaded or not

*/

function __construct()

{

$this->config =& get_config();

log_message('debug', "Config Class Initialized");

// Set the base_url automatically if none was provided

if ($this->config['base_url'] == '')

{

if (isset($_SERVER['HTTP_HOST']))

{

$base_url = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http';

$base_url .= '://'. $_SERVER['HTTP_HOST'];

$base_url .= str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);

}

else

{

$base_url = 'http://localhost/';

}

$this->set_item('base_url', $base_url);

}

}

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

/**

* Load Config File

*

* @access public

* @param string the config file name

* @param boolean if configuration values should be loaded into their own section

* @param boolean true if errors should just return false, false if an error message should be displayed

* @return boolean if the file was loaded correctly

*/

function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)

{

$file = ($file == '') ? 'config' : str_replace('.php', '', $file);

$found = FALSE;

$loaded = FALSE;

foreach ($this->_config_paths as $path)

{

$check_locations = defined('ENVIRONMENT')

? array(ENVIRONMENT.'/'.$file, $file)

: array($file);

foreach ($check_locations as $location)

{

$file_path = $path.'config/'.$location.'.php';

if (in_array($file_path, $this->is_loaded, TRUE))

{

$loaded = TRUE;

continue 2;

}

if (file_exists($file_path))

{

$found = TRUE;

break;

}

}

if ($found === FALSE)

{

continue;

}

include($file_path);

if ( ! isset($config) OR ! is_array($config))

{

if ($fail_gracefully === TRUE)

{

return FALSE;

}

show_error('Your '.$file_path.' file does not appear to contain a valid configuration array.');

}

if ($use_sections === TRUE)

{

if (isset($this->config[$file]))

{

$this->config[$file] = array_merge($this->config[$file], $config);

}

else

{

$this->config[$file] = $config;

}

}

else

{

$this->config = array_merge($this->config, $config);

}

$this->is_loaded[] = $file_path;

unset($config);

$loaded = TRUE;

log_message('debug', 'Config file loaded: '.$file_path);

break;

}

if ($loaded === FALSE)

{

if ($fail_gracefully === TRUE)

{

return FALSE;

}

show_error('The configuration file '.$file.'.php'.' does not exist.');

}

return TRUE;

}

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

/**

* Fetch a config file item

*

*

* @access public

* @param string the config item name

* @param string the index name

* @param bool

* @return string

*/

function item($item, $index = '')

{

if ($index == '')

{

if ( ! isset($this->config[$item]))

{

return FALSE;

}

$pref = $this->config[$item];

}

else

{

if ( ! isset($this->config[$index]))

{

return FALSE;

}

if ( ! isset($this->config[$index][$item]))

{

return FALSE;

}

$pref = $this->config[$index][$item];

}

return $pref;

}

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

/**

* Fetch a config file item - adds slash after item (if item is not empty)

*

* @access public

* @param string the config item name

* @param bool

* @return string

*/

function slash_item($item)

{

if ( ! isset($this->config[$item]))

{

return FALSE;

}

if( trim($this->config[$item]) == '')

{

return '';

}

return rtrim($this->config[$item], '/').'/';

}

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

/**

* Site URL

* Returns base_url . index_page [. uri_string]

*

* @access public

* @param string the URI string

* @return string

*/

function site_url($uri = '')

{

if ($uri == '')

{

return $this->slash_item('base_url').$this->item('index_page');

}

if ($this->item('enable_query_strings') == FALSE)

{

$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');

return $this->slash_item('base_url').$this->slash_item('index_page').$this->_uri_string($uri).$suffix;

}

else

{

return $this->slash_item('base_url').$this->item('index_page').'?'.$this->_uri_string($uri);

}

}

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

/**

* Base URL

* Returns base_url [. uri_string]

*

* @access public

* @param string $uri

* @return string

*/

function base_url($uri = '')

{

return $this->slash_item('base_url').ltrim($this->_uri_string($uri),'/');

}

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

/**

* Build URI string for use in Config::site_url() and Config::base_url()

*

* @access protected

* @param $uri

* @return string

*/

protected function _uri_string($uri)

{

if ($this->item('enable_query_strings') == FALSE)

{

if (is_array($uri))

{

$uri = implode('/', $uri);

}

$uri = trim($uri, '/');

}

else

{

if (is_array($uri))

{

$i = 0;

$str = '';

foreach ($uri as $key => $val)

{

$prefix = ($i == 0) ? '' : '&';

$str .= $prefix.$key.'='.$val;

$i++;

}

$uri = $str;

}

}

return $uri;

}

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

/**

* System URL

*

* @access public

* @return string

*/

function system_url()

{

$x = explode("/", preg_replace("|/*(.+?)/*$|", "\\1", BASEPATH));

return $this->slash_item('base_url').end($x).'/';

}

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

/**

* Set a config file item

*

* @access public

* @param string the config item key

* @param string the config item value

* @return void

*/

function set_item($item, $value)

{

$this->config[$item] = $value;

}

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

/**

* Assign to Config

*

* This function is called by the front controller (CodeIgniter.php)

* after the Config class is instantiated. It permits config items

* to be assigned or overriden by variables contained in the index.php file

*

* @access private

* @param array

* @return void

*/

function _assign_to_config($items = array())

{

if (is_array($items))

{

foreach ($items as $key => $val)

{

$this->set_item($key, $val);

}

}

}

}

// END CI_Config class

/* End of file Config.php */

/* Location: ./system/core/Config.php */