| <?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) 2006, 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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| * Router Class
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| *
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| * Parses URIs and determines routing
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| *
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| * @package CodeIgniter
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| * @subpackage Libraries
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| * @author ExpressionEngine Dev Team
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| * @category Libraries
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| * @link http://codeigniter.com/user_guide/general/routing.html
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| */
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| class CI_Router {
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|
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| var $config;
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| var $routes = array();
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| var $error_routes = array();
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| var $class = '';
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| var $method = 'index';
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| var $directory = '';
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| var $uri_protocol = 'auto';
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| var $default_controller;
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| var $scaffolding_request = FALSE; // Must be set to FALSE
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|
|
| /**
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| * Constructor
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| *
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| * Runs the route mapping function.
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| */
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| function CI_Router()
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| {
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| $this->config =& load_class('Config');
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| $this->uri =& load_class('URI');
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| $this->_set_routing();
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| log_message('debug', "Router Class Initialized");
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| }
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|
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| // --------------------------------------------------------------------
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|
|
| /**
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| * Set the route mapping
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| *
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| * This function determines what should be served based on the URI request,
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| * as well as any "routes" that have been set in the routing config file.
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| *
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| * @access private
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| * @return void
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| */
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| function _set_routing()
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| {
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| // Are query strings enabled in the config file?
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| // If so, we're done since segment based URIs are not used with query strings.
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| if ($this->config->item('enable_query_strings') === TRUE AND isset($_GET[$this->config->item('controller_trigger')]))
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| {
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| $this->set_class(trim($this->uri->_filter_uri($_GET[$this->config->item('controller_trigger')])));
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|
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| if (isset($_GET[$this->config->item('function_trigger')]))
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| {
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| $this->set_method(trim($this->uri->_filter_uri($_GET[$this->config->item('function_trigger')])));
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| }
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|
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| return;
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| }
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|
|
| // Load the routes.php file.
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| @include(APPPATH.'config/routes'.EXT);
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| $this->routes = (! isset($route) OR ! is_array($route)) ? array() : $route;
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| unset($route);
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|
|
| // Set the default controller so we can display it in the event
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| // the URI doesn't correlated to a valid controller.
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| $this->default_controller = (! isset($this->routes['default_controller']) OR $this->routes['default_controller'] == '') ? FALSE : strtolower($this->routes['default_controller']);
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|
|
| // Fetch the complete URI string
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| $this->uri->_fetch_uri_string();
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|
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| // Is there a URI string? If not, the default controller specified in the "routes" file will be shown.
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| if ($this->uri->uri_string == '')
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| {
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| if ($this->default_controller === FALSE)
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| {
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| show_error("Unable to determine what should be displayed. A default route has not been specified in the routing file.");
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| }
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|
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| $this->set_class($this->default_controller);
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| $this->set_method('index');
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| $this->_set_request(array($this->default_controller, 'index'));
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|
|
| // re-index the routed segments array so it starts with 1 rather than 0
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| $this->uri->_reindex_segments();
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|
|
| log_message('debug', "No URI present. Default controller set.");
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| return;
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| }
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| unset($this->routes['default_controller']);
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|
|
| // Do we need to remove the URL suffix?
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| $this->uri->_remove_url_suffix();
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|
|
| // Compile the segments into an array
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| $this->uri->_explode_segments();
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|
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| // Parse any custom routing that may exist
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| $this->_parse_routes();
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|
|
| // Re-index the segment array so that it starts with 1 rather than 0
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| $this->uri->_reindex_segments();
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| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
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| * Set the Route
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| *
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| * This function takes an array of URI segments as
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| * input, and sets the current class/method
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| *
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| * @access private
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| * @param array
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| * @param bool
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| * @return void
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| */
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| function _set_request($segments = array())
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| {
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| $segments = $this->_validate_request($segments);
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|
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| if (count($segments) == 0)
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| {
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| return;
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| }
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|
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| $this->set_class($segments[0]);
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|
|
| if (isset($segments[1]))
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| {
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| // A scaffolding request. No funny business with the URL
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| if ($this->routes['scaffolding_trigger'] == $segments[1] AND $segments[1] != '_ci_scaffolding')
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| {
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| $this->scaffolding_request = TRUE;
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| unset($this->routes['scaffolding_trigger']);
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| }
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| else
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| {
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| // A standard method request
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| $this->set_method($segments[1]);
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| }
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| }
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| else
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| {
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| // This lets the "routed" segment array identify that the default
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| // index method is being used.
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| $segments[1] = 'index';
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| }
|
|
|
| // Update our "routed" segment array to contain the segments.
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| // Note: If there is no custom routing, this array will be
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| // identical to $this->uri->segments
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| $this->uri->rsegments = $segments;
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| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
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| * Validates the supplied segments. Attempts to determine the path to
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| * the controller.
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| *
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| * @access private
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| * @param array
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| * @return array
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| */
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| function _validate_request($segments)
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| {
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| // Does the requested controller exist in the root folder?
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| if (file_exists(APPPATH.'controllers/'.$segments[0].EXT))
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| {
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| return $segments;
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| }
|
|
|
| // Is the controller in a sub-folder?
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| if (is_dir(APPPATH.'controllers/'.$segments[0]))
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| {
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| // Set the directory and remove it from the segment array
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| $this->set_directory($segments[0]);
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| $segments = array_slice($segments, 1);
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|
|
| if (count($segments) > 0)
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| {
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| // Does the requested controller exist in the sub-folder?
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| if (! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].EXT))
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| {
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| show_404($this->fetch_directory().$segments[0]);
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| }
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| }
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| else
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| {
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| $this->set_class($this->default_controller);
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| $this->set_method('index');
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|
|
| // Does the default controller exist in the sub-folder?
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| if (! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$this->default_controller.EXT))
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| {
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| $this->directory = '';
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| return array();
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| }
|
|
|
| }
|
|
|
| return $segments;
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| }
|
|
|
| // Can't find the requested controller...
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| show_404($segments[0]);
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| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Parse Routes
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| *
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| * This function matches any routes that may exist in
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| * the config/routes.php file against the URI to
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| * determine if the class/method need to be remapped.
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| *
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| * @access private
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| * @return void
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| */
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| function _parse_routes()
|
| {
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| // Do we even have any custom routing to deal with?
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| // There is a default scaffolding trigger, so we'll look just for 1
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| if (count($this->routes) == 1)
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| {
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| $this->_set_request($this->uri->segments);
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| return;
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| }
|
|
|
| // Turn the segment array into a URI string
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| $uri = implode('/', $this->uri->segments);
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| $num = count($this->uri->segments);
|
|
|
| // Is there a literal match? If so we're done
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| if (isset($this->routes[$uri]))
|
| {
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| $this->_set_request(explode('/', $this->routes[$uri]));
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| return;
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| }
|
|
|
| // Loop through the route array looking for wild-cards
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| foreach ($this->routes as $key => $val)
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| {
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| // Convert wild-cards to RegEx
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| $key = str_replace(':any', '.+', str_replace(':num', '[0-9]+', $key));
|
|
|
| // Does the RegEx match?
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| if (preg_match('#^'.$key.'$#', $uri))
|
| {
|
| // Do we have a back-reference?
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| if (strpos($val, '$') !== FALSE AND strpos($key, '(') !== FALSE)
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| {
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| $val = preg_replace('#^'.$key.'$#', $val, $uri);
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| }
|
|
|
| $this->_set_request(explode('/', $val));
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| return;
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| }
|
| }
|
|
|
| // If we got this far it means we didn't encounter a
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| // matching route so we'll set the site default route
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| $this->_set_request($this->uri->segments);
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Set the class name
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| *
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| * @access public
|
| * @param string
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| * @return void
|
| */
|
| function set_class($class)
|
| {
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| $this->class = $class;
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Fetch the current class
|
| *
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| * @access public
|
| * @return string
|
| */
|
| function fetch_class()
|
| {
|
| return $this->class;
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Set the method name
|
| *
|
| * @access public
|
| * @param string
|
| * @return void
|
| */
|
| function set_method($method)
|
| {
|
| $this->method = $method;
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Fetch the current method
|
| *
|
| * @access public
|
| * @return string
|
| */
|
| function fetch_method()
|
| {
|
| if ($this->method == $this->fetch_class())
|
| {
|
| return 'index';
|
| }
|
|
|
| return $this->method;
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Set the directory name
|
| *
|
| * @access public
|
| * @param string
|
| * @return void
|
| */
|
| function set_directory($dir)
|
| {
|
| $this->directory = $dir.'/';
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Fetch the sub-directory (if any) that contains the requested controller class
|
| *
|
| * @access public
|
| * @return string
|
| */
|
| function fetch_directory()
|
| {
|
| return $this->directory;
|
| }
|
|
|
| }
|
| // END Router Class
|
| |
| /* End of file Router.php */ |
| /* Location: ./system/libraries/Router.php */ |