system/core/Router.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
  * Licensed under the Open Software License version 3.0
  *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
  * http://opensource.org/licenses/OSL-3.0
  * If you did not receive a copy of the license and are unable to obtain it
  * through the world wide web, please send an email to
  * licensing@ellislab.com so we can send you a copy immediately.
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
  * @copyright	Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
  * @filesource
  */
 defined('BASEPATH') OR exit('No direct script access allowed');

 /**
  * Router Class
  *
  * Parses URIs and determines routing
  *
  * @package		CodeIgniter
  * @subpackage	Libraries
  * @category	Libraries
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/general/routing.html
  */
 class CI_Router {

 	/**
 	 * CI_Config class object
 	 *
 	 * @var	object
 	 */
 	public $config;

 	/**
 	 * List of routes
 	 *
 	 * @var	array
 	 */
 	public $routes =	array();

 	/**
 	 * Current class name
 	 *
 	 * @var	string
 	 */
 	public $class =		'';

 	/**
 	 * Current method name
 	 *
 	 * @var	string
 	 */
 	public $method =	'index';

 	/**
 	 * Sub-directory that contains the requested controller class
 	 *
 	 * @var	string
 	 */
 	public $directory =	'';

 	/**
 	 * Default controller (and method if specific)
 	 *
 	 * @var	string
 	 */
 	public $default_controller;

 	/**
 	 * Translate URI dashes
 	 *
 	 * Determines whether dashes in controller & method segments
 	 * should be automatically replaced by underscores.
 	 *
 	 * @var	bool
 	 */
 	public $translate_uri_dashes = FALSE;

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

 	/**
 	 * Class constructor
 	 *
 	 * Runs the route mapping function.
 	 *
 	 * @return	void
 	 */
 	public function __construct()
 	{
 		$this->config =& load_class('Config', 'core');
 		$this->uri =& load_class('URI', 'core');
 		$this->_set_routing();
 		log_message('debug', 'Router Class Initialized');
 	}

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

 	/**
 	 * Set route mapping
 	 *
 	 * Determines what should be served based on the URI request,
 	 * as well as any "routes" that have been set in the routing config file.
 	 *
 	 * @return	void
 	 */
 	protected function _set_routing()
 	{
 		// Are query strings enabled in the config file? Normally CI doesn't utilize query strings
 		// since URI segments are more search-engine friendly, but they can optionally be used.
 		// If this feature is enabled, we will gather the directory/class/method a little differently
 		$segments = array();
 		if ($this->config->item('enable_query_strings') === TRUE
 			&& ! empty($_GET[$this->config->item('controller_trigger')])
 			&& is_string($_GET[$this->config->item('controller_trigger')])
 		)
 		{
 			if (isset($_GET[$this->config->item('directory_trigger')]) && is_string($_GET[$this->config->item('directory_trigger')]))
 			{
 				$this->set_directory(trim($this->uri->_filter_uri($_GET[$this->config->item('directory_trigger')])));
 				$segments[] = $this->directory;
 			}

 			$this->set_class(trim($this->uri->_filter_uri($_GET[$this->config->item('controller_trigger')])));
 			$segments[] = $this->class;

 			if ( ! empty($_GET[$this->config->item('function_trigger')]) && is_string($_GET[$this->config->item('function_trigger')]))
 			{
 				$this->set_method(trim($this->uri->_filter_uri($_GET[$this->config->item('function_trigger')])));
 				$segments[] = $this->method;
 			}
 		}

 		// Load the routes.php file.
 		if (file_exists(APPPATH.'config/routes.php'))
 		{
 			include(APPPATH.'config/routes.php');
 		}

 		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/routes.php'))
 		{
 			include(APPPATH.'config/'.ENVIRONMENT.'/routes.php');
 		}

 		// Validate & get reserved routes
 		if (isset($route) && is_array($route))
 		{
 			isset($route['default_controller']) && $this->default_controller = $route['default_controller'];
 			isset($route['translate_uri_dashes']) && $this->translate_uri_dashes = $route['translate_uri_dashes'];
 			unset($route['default_controller'], $route['translate_uri_dashes']);
 			$this->routes = $route;
 		}

 		// Were there any query string segments? If so, we'll validate them and bail out since we're done.
 		if (count($segments) > 0)
 		{
 			return $this->_validate_request($segments);
 		}

 		// Fetch the complete URI string
 		$this->uri->_fetch_uri_string();

 		// Is there a URI string? If not, the default controller specified in the "routes" file will be shown.
 		if ($this->uri->uri_string == '')
 		{
 			return $this->_set_default_controller();
 		}

 		$this->uri->_remove_url_suffix(); // Remove the URL suffix
 		$this->uri->_explode_segments(); // Compile the segments into an array
 		$this->_parse_routes(); // Parse any custom routing that may exist
 		$this->uri->_reindex_segments(); // Re-index the segment array so that it starts with 1 rather than 0
 	}

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

 	/**
 	 * Set default controller
 	 *
 	 * @return	void
 	 */
 	protected function _set_default_controller()
 	{
 		if (empty($this->default_controller))
 		{
 			show_error('Unable to determine what should be displayed. A default route has not been specified in the routing file.');
 		}

 		// Is the method being specified?
 		if (sscanf($this->default_controller, '%[^/]/%s', $class, $method) !== 2)
 		{
 			$method = 'index';
 		}

 		$this->_set_request(array($class, $method));

 		// re-index the routed segments array so it starts with 1 rather than 0
 		$this->uri->_reindex_segments();

 		log_message('debug', 'No URI present. Default controller set.');
 	}

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

 	/**
 	 * Set request route
 	 *
 	 * Takes an array of URI segments as input and sets the class/method
 	 * to be called.
 	 *
 	 * @param	array	$segments	URI segments
 	 * @return	void
 	 */
 	protected function _set_request($segments = array())
 	{
 		$segments = $this->_validate_request($segments);

 		if (count($segments) === 0)
 		{
 			return $this->_set_default_controller();
 		}

 		if ($this->translate_uri_dashes === TRUE)
 		{
 			$segments[0] = str_replace('-', '_', $segments[0]);
 			if (isset($segments[1]))
 			{
 				$segments[1] = str_replace('-', '_', $segments[1]);
 			}
 		}

 		$this->set_class($segments[0]);
 		isset($segments[1]) OR $segments[1] = 'index';
 		$this->set_method($segments[1]);

 		// Update our "routed" segment array to contain the segments.
 		// Note: If there is no custom routing, this array will be
 		// identical to $this->uri->segments
 		$this->uri->rsegments = $segments;
 	}

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

 	/**
 	 * Validate request
 	 *
 	 * Attempts validate the URI request and determine the controller path.
 	 *
 	 * @param	array	$segments	URI segments
 	 * @return	array	URI segments
 	 */
 	protected function _validate_request($segments)
 	{
 		if (count($segments) === 0)
 		{
 			return $segments;
 		}

 		$test = ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);

 		// Does the requested controller exist in the root folder?
 		if (file_exists(APPPATH.'controllers/'.$test.'.php'))
 		{
 			return $segments;
 		}

 		// Is the controller in a sub-folder?
 		if (is_dir(APPPATH.'controllers/'.$segments[0]))
 		{
 			// Set the directory and remove it from the segment array
 			$this->set_directory(array_shift($segments));
 			if (count($segments) > 0)
 			{
 				$test = ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);

 				// Does the requested controller exist in the sub-directory?
 				if ( ! file_exists(APPPATH.'controllers/'.$this->directory.$test.'.php'))
 				{
 					if ( ! empty($this->routes['404_override']))
 					{
 						$this->directory = '';
 						return explode('/', $this->routes['404_override'], 2);
 					}
 					else
 					{
 						show_404($this->directory.$segments[0]);
 					}
 				}
 			}
 			else
 			{
 				// Is the method being specified in the route?
 				$segments = explode('/', $this->default_controller);
 				if ( ! file_exists(APPPATH.'controllers/'.$this->directory.ucfirst($segments[0]).'.php'))
 				{
 					$this->directory = '';
 				}
 			}

 			return $segments;
 		}

 		// If we've gotten this far it means that the URI does not correlate to a valid
 		// controller class. We will now see if there is an override
 		if ( ! empty($this->routes['404_override']))
 		{
 			if (sscanf($this->routes['404_override'], '%[^/]/%s', $class, $method) !== 2)
 			{
 				$method = 'index';
 			}

 			return array($class, $method);
 		}

 		// Nothing else to do at this point but show a 404
 		show_404($segments[0]);
 	}

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

 	/**
 	 * Parse Routes
 	 *
 	 * Matches any routes that may exist in the config/routes.php file
 	 * against the URI to determine if the class/method need to be remapped.
 	 *
 	 * @return	void
 	 */
 	protected function _parse_routes()
 	{
 		// Turn the segment array into a URI string
 		$uri = implode('/', $this->uri->segments);

 		// Is there a literal match?  If so we're done
 		if (isset($this->routes[$uri]) && is_string($this->routes[$uri]))
 		{
 			return $this->_set_request(explode('/', $this->routes[$uri]));
 		}

 		// Loop through the route array looking for wildcards
 		foreach ($this->routes as $key => $val)
 		{
 			// Convert wildcards to RegEx
 			$key = str_replace(array(':any', ':num'), array('[^/]+', '[0-9]+'), $key);

 			// Does the RegEx match?
 			if (preg_match('#^'.$key.'$#', $uri, $matches))
 			{
 				// Are we using callbacks to process back-references?
 				if ( ! is_string($val) && is_callable($val))
 				{
 					// Remove the original string from the matches array.
 					array_shift($matches);

 					// Get the match count.
 					$match_count = count($matches);

 					// Determine how many parameters the callback has.
 					$reflection = new ReflectionFunction($val);
 					$param_count = $reflection->getNumberOfParameters();

 					// Are there more parameters than matches?
 					if ($param_count > $match_count)
 					{
 						// Any params without matches will be set to an empty string.
 						$matches = array_merge($matches, array_fill($match_count, $param_count - $match_count, ''));

 						$match_count = $param_count;
 					}

 					// Get the parameters so we can use their default values.
 					$params = $reflection->getParameters();

 					for ($m = 0; $m < $match_count; $m++)
 					{
 						// Is the match empty and does a default value exist?
 						if (empty($matches[$m]) && $params[$m]->isDefaultValueAvailable())
 						{
 							// Substitute the empty match for the default value.
 							$matches[$m] = $params[$m]->getDefaultValue();
 						}
 					}

 					// Execute the callback using the values in matches as its parameters.
 					$val = call_user_func_array($val, $matches);
 				}
 				// Are we using the default routing method for back-references?
 				elseif (strpos($val, '$') !== FALSE && strpos($key, '(') !== FALSE)
 				{
 					$val = preg_replace('#^'.$key.'$#', $val, $uri);
 				}

 				return $this->_set_request(explode('/', $val));
 			}
 		}

 		// If we got this far it means we didn't encounter a
 		// matching route so we'll set the site default route
 		$this->_set_request($this->uri->segments);
 	}

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

 	/**
 	 * Set class name
 	 *
 	 * @param	string	$class	Class name
 	 * @return	void
 	 */
 	public function set_class($class)
 	{
 		$this->class = str_replace(array('/', '.'), '', $class);
 	}

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

 	/**
 	 * Fetch the current class
 	 *
 	 * @deprecated	3.0.0	Read the 'class' property instead
 	 * @return	string
 	 */
 	public function fetch_class()
 	{
 		return $this->class;
 	}

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

 	/**
 	 * Set method name
 	 *
 	 * @param	string	$method	Method name
 	 * @return	void
 	 */
 	public function set_method($method)
 	{
 		$this->method = $method;
 	}

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

 	/**
 	 * Fetch the current method
 	 *
 	 * @deprecated	3.0.0	Read the 'method' property instead
 	 * @return	string
 	 */
 	public function fetch_method()
 	{
 		return $this->method;
 	}

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

 	/**
 	 * Set directory name
 	 *
 	 * @param	string	$dir	Directory name
 	 * @return	void
 	 */
 	public function set_directory($dir)
 	{
 		$this->directory = str_replace(array('/', '.'), '', $dir).'/';
 	}

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

 	/**
 	 * Fetch directory
 	 *
 	 * Feches the sub-directory (if any) that contains the requested
 	 * controller class.
 	 *
 	 * @deprecated	3.0.0	Read the 'directory' property instead
 	 * @return	string
 	 */
 	public function fetch_directory()
 	{
 		return $this->directory;
 	}

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

 	/**
 	 * Set controller overrides
 	 *
 	 * @param	array	$routing	Route overrides
 	 * @return	void
 	 */
 	public function _set_overrides($routing)
 	{
 		if ( ! is_array($routing))
 		{
 			return;
 		}

 		if (isset($routing['directory']))
 		{
 			$this->set_directory($routing['directory']);
 		}

 		if ( ! empty($routing['controller']))
 		{
 			$this->set_class($routing['controller']);
 		}

 		if (isset($routing['function']))
 		{
 			$routing['function'] = empty($routing['function']) ? 'index' : $routing['function'];
 			$this->set_method($routing['function']);
 		}
 	}

 }

 /* End of file Router.php */
 /* Location: ./system/core/Router.php */
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP 5.2.4 or newer
	*
	* NOTICE OF LICENSE
	*
	* Licensed under the Open Software License version 3.0
	*
	* This source file is subject to the Open Software License (OSL 3.0) that is
	* bundled with this package in the files license.txt / license.rst. It is
	* also available through the world wide web at this URL:
	* http://opensource.org/licenses/OSL-3.0
	* If you did not receive a copy of the license and are unable to obtain it
	* through the world wide web, please send an email to
	* licensing@ellislab.com so we can send you a copy immediately.
	*
	* @package CodeIgniter
	* @author EllisLab Dev Team
	* @copyright Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
	* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
	* @link http://codeigniter.com
	* @since Version 1.0
	* @filesource
	*/
	defined('BASEPATH') OR exit('No direct script access allowed');

	/**
	* Router Class
	*
	* Parses URIs and determines routing
	*
	* @package CodeIgniter
	* @subpackage Libraries
	* @category Libraries
	* @author EllisLab Dev Team
	* @link http://codeigniter.com/user_guide/general/routing.html
	*/
	class CI_Router {

	/**
	* CI_Config class object
	*
	* @var object
	*/
	public $config;

	/**
	* List of routes
	*
	* @var array
	*/
	public $routes = array();

	/**
	* Current class name
	*
	* @var string
	*/
	public $class = '';

	/**
	* Current method name
	*
	* @var string
	*/
	public $method = 'index';

	/**
	* Sub-directory that contains the requested controller class
	*
	* @var string
	*/
	public $directory = '';

	/**
	* Default controller (and method if specific)
	*
	* @var string
	*/
	public $default_controller;

	/**
	* Translate URI dashes
	*
	* Determines whether dashes in controller & method segments
	* should be automatically replaced by underscores.
	*
	* @var bool
	*/
	public $translate_uri_dashes = FALSE;

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

	/**
	* Class constructor
	*
	* Runs the route mapping function.
	*
	* @return void
	*/
	public function __construct()
	{
	$this->config =& load_class('Config', 'core');
	$this->uri =& load_class('URI', 'core');
	$this->_set_routing();
	log_message('debug', 'Router Class Initialized');
	}

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

	/**
	* Set route mapping
	*
	* Determines what should be served based on the URI request,
	* as well as any "routes" that have been set in the routing config file.
	*
	* @return void
	*/
	protected function _set_routing()
	{
	// Are query strings enabled in the config file? Normally CI doesn't utilize query strings
	// since URI segments are more search-engine friendly, but they can optionally be used.
	// If this feature is enabled, we will gather the directory/class/method a little differently
	$segments = array();
	if ($this->config->item('enable_query_strings') === TRUE
	&& ! empty($_GET[$this->config->item('controller_trigger')])
	&& is_string($_GET[$this->config->item('controller_trigger')])
	)
	{
	if (isset($_GET[$this->config->item('directory_trigger')]) && is_string($_GET[$this->config->item('directory_trigger')]))
	{
	$this->set_directory(trim($this->uri->_filter_uri($_GET[$this->config->item('directory_trigger')])));
	$segments[] = $this->directory;
	}

	$this->set_class(trim($this->uri->_filter_uri($_GET[$this->config->item('controller_trigger')])));
	$segments[] = $this->class;

	if ( ! empty($_GET[$this->config->item('function_trigger')]) && is_string($_GET[$this->config->item('function_trigger')]))
	{
	$this->set_method(trim($this->uri->_filter_uri($_GET[$this->config->item('function_trigger')])));
	$segments[] = $this->method;
	}
	}

	// Load the routes.php file.
	if (file_exists(APPPATH.'config/routes.php'))
	{
	include(APPPATH.'config/routes.php');
	}

	if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/routes.php'))
	{
	include(APPPATH.'config/'.ENVIRONMENT.'/routes.php');
	}

	// Validate & get reserved routes
	if (isset($route) && is_array($route))
	{
	isset($route['default_controller']) && $this->default_controller = $route['default_controller'];
	isset($route['translate_uri_dashes']) && $this->translate_uri_dashes = $route['translate_uri_dashes'];
	unset($route['default_controller'], $route['translate_uri_dashes']);
	$this->routes = $route;
	}

	// Were there any query string segments? If so, we'll validate them and bail out since we're done.
	if (count($segments) > 0)
	{
	return $this->_validate_request($segments);
	}

	// Fetch the complete URI string
	$this->uri->_fetch_uri_string();

	// Is there a URI string? If not, the default controller specified in the "routes" file will be shown.
	if ($this->uri->uri_string == '')
	{
	return $this->_set_default_controller();
	}

	$this->uri->_remove_url_suffix(); // Remove the URL suffix
	$this->uri->_explode_segments(); // Compile the segments into an array
	$this->_parse_routes(); // Parse any custom routing that may exist
	$this->uri->_reindex_segments(); // Re-index the segment array so that it starts with 1 rather than 0
	}

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

	/**
	* Set default controller
	*
	* @return void
	*/
	protected function _set_default_controller()
	{
	if (empty($this->default_controller))
	{
	show_error('Unable to determine what should be displayed. A default route has not been specified in the routing file.');
	}

	// Is the method being specified?
	if (sscanf($this->default_controller, '%[^/]/%s', $class, $method) !== 2)
	{
	$method = 'index';
	}

	$this->_set_request(array($class, $method));

	// re-index the routed segments array so it starts with 1 rather than 0
	$this->uri->_reindex_segments();

	log_message('debug', 'No URI present. Default controller set.');
	}

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

	/**
	* Set request route
	*
	* Takes an array of URI segments as input and sets the class/method
	* to be called.
	*
	* @param array $segments URI segments
	* @return void
	*/
	protected function _set_request($segments = array())
	{
	$segments = $this->_validate_request($segments);

	if (count($segments) === 0)
	{
	return $this->_set_default_controller();
	}

	if ($this->translate_uri_dashes === TRUE)
	{
	$segments[0] = str_replace('-', '_', $segments[0]);
	if (isset($segments[1]))
	{
	$segments[1] = str_replace('-', '_', $segments[1]);
	}
	}

	$this->set_class($segments[0]);
	isset($segments[1]) OR $segments[1] = 'index';
	$this->set_method($segments[1]);

	// Update our "routed" segment array to contain the segments.
	// Note: If there is no custom routing, this array will be
	// identical to $this->uri->segments
	$this->uri->rsegments = $segments;
	}

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

	/**
	* Validate request
	*
	* Attempts validate the URI request and determine the controller path.
	*
	* @param array $segments URI segments
	* @return array URI segments
	*/
	protected function _validate_request($segments)
	{
	if (count($segments) === 0)
	{
	return $segments;
	}

	$test = ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);

	// Does the requested controller exist in the root folder?
	if (file_exists(APPPATH.'controllers/'.$test.'.php'))
	{
	return $segments;
	}

	// Is the controller in a sub-folder?
	if (is_dir(APPPATH.'controllers/'.$segments[0]))
	{
	// Set the directory and remove it from the segment array
	$this->set_directory(array_shift($segments));
	if (count($segments) > 0)
	{
	$test = ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);

	// Does the requested controller exist in the sub-directory?
	if ( ! file_exists(APPPATH.'controllers/'.$this->directory.$test.'.php'))
	{
	if ( ! empty($this->routes['404_override']))
	{
	$this->directory = '';
	return explode('/', $this->routes['404_override'], 2);
	}
	else
	{
	show_404($this->directory.$segments[0]);
	}
	}
	}
	else
	{
	// Is the method being specified in the route?
	$segments = explode('/', $this->default_controller);
	if ( ! file_exists(APPPATH.'controllers/'.$this->directory.ucfirst($segments[0]).'.php'))
	{
	$this->directory = '';
	}
	}

	return $segments;
	}

	// If we've gotten this far it means that the URI does not correlate to a valid
	// controller class. We will now see if there is an override
	if ( ! empty($this->routes['404_override']))
	{
	if (sscanf($this->routes['404_override'], '%[^/]/%s', $class, $method) !== 2)
	{
	$method = 'index';
	}

	return array($class, $method);
	}

	// Nothing else to do at this point but show a 404
	show_404($segments[0]);
	}

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

	/**
	* Parse Routes
	*
	* Matches any routes that may exist in the config/routes.php file
	* against the URI to determine if the class/method need to be remapped.
	*
	* @return void
	*/
	protected function _parse_routes()
	{
	// Turn the segment array into a URI string
	$uri = implode('/', $this->uri->segments);

	// Is there a literal match? If so we're done
	if (isset($this->routes[$uri]) && is_string($this->routes[$uri]))
	{
	return $this->_set_request(explode('/', $this->routes[$uri]));
	}

	// Loop through the route array looking for wildcards
	foreach ($this->routes as $key => $val)
	{
	// Convert wildcards to RegEx
	$key = str_replace(array(':any', ':num'), array('[^/]+', '[0-9]+'), $key);

	// Does the RegEx match?
	if (preg_match('#^'.$key.'$#', $uri, $matches))
	{
	// Are we using callbacks to process back-references?
	if ( ! is_string($val) && is_callable($val))
	{
	// Remove the original string from the matches array.
	array_shift($matches);

	// Get the match count.
	$match_count = count($matches);

	// Determine how many parameters the callback has.
	$reflection = new ReflectionFunction($val);
	$param_count = $reflection->getNumberOfParameters();

	// Are there more parameters than matches?
	if ($param_count > $match_count)
	{
	// Any params without matches will be set to an empty string.
	$matches = array_merge($matches, array_fill($match_count, $param_count - $match_count, ''));

	$match_count = $param_count;
	}

	// Get the parameters so we can use their default values.
	$params = $reflection->getParameters();

	for ($m = 0; $m < $match_count; $m++)
	{
	// Is the match empty and does a default value exist?
	if (empty($matches[$m]) && $params[$m]->isDefaultValueAvailable())
	{
	// Substitute the empty match for the default value.
	$matches[$m] = $params[$m]->getDefaultValue();
	}
	}

	// Execute the callback using the values in matches as its parameters.
	$val = call_user_func_array($val, $matches);
	}
	// Are we using the default routing method for back-references?
	elseif (strpos($val, '$') !== FALSE && strpos($key, '(') !== FALSE)
	{
	$val = preg_replace('#^'.$key.'$#', $val, $uri);
	}

	return $this->_set_request(explode('/', $val));
	}
	}

	// If we got this far it means we didn't encounter a
	// matching route so we'll set the site default route
	$this->_set_request($this->uri->segments);
	}

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

	/**
	* Set class name
	*
	* @param string $class Class name
	* @return void
	*/
	public function set_class($class)
	{
	$this->class = str_replace(array('/', '.'), '', $class);
	}

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

	/**
	* Fetch the current class
	*
	* @deprecated 3.0.0 Read the 'class' property instead
	* @return string
	*/
	public function fetch_class()
	{
	return $this->class;
	}

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

	/**
	* Set method name
	*
	* @param string $method Method name
	* @return void
	*/
	public function set_method($method)
	{
	$this->method = $method;
	}

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

	/**
	* Fetch the current method
	*
	* @deprecated 3.0.0 Read the 'method' property instead
	* @return string
	*/
	public function fetch_method()
	{
	return $this->method;
	}

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

	/**
	* Set directory name
	*
	* @param string $dir Directory name
	* @return void
	*/
	public function set_directory($dir)
	{
	$this->directory = str_replace(array('/', '.'), '', $dir).'/';
	}

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

	/**
	* Fetch directory
	*
	* Feches the sub-directory (if any) that contains the requested
	* controller class.
	*
	* @deprecated 3.0.0 Read the 'directory' property instead
	* @return string
	*/
	public function fetch_directory()
	{
	return $this->directory;
	}

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

	/**
	* Set controller overrides
	*
	* @param array $routing Route overrides
	* @return void
	*/
	public function _set_overrides($routing)
	{
	if ( ! is_array($routing))
	{
	return;
	}

	if (isset($routing['directory']))
	{
	$this->set_directory($routing['directory']);
	}

	if ( ! empty($routing['controller']))
	{
	$this->set_class($routing['controller']);
	}

	if (isset($routing['function']))
	{
	$routing['function'] = empty($routing['function']) ? 'index' : $routing['function'];
	$this->set_method($routing['function']);
	}
	}

	}

	/* End of file Router.php */
	/* Location: ./system/core/Router.php */