315 lines
7.7 KiB
PHP
315 lines
7.7 KiB
PHP
<?php defined('SYSPATH') OR die('No direct access allowed.');
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/**
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* Router
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*
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* $Id: Router.php 4693 2009-12-04 17:11:16Z cbandy $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007-2009 Kohana Team
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* @license http://kohanaphp.com/license
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*/
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class Router_Core {
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protected static $routes;
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public static $current_uri = '';
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public static $query_string = '';
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public static $complete_uri = '';
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public static $routed_uri = '';
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public static $url_suffix = '';
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public static $segments;
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public static $rsegments;
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public static $controller;
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public static $controller_path;
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public static $method = 'index';
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public static $arguments = array();
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/**
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* Router setup routine. Automatically called during Kohana setup process.
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*
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* @return void
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*/
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public static function setup()
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{
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if ( ! empty($_SERVER['QUERY_STRING']))
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{
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// Set the query string to the current query string
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Router::$query_string = '?'.urldecode(trim($_SERVER['QUERY_STRING'], '&'));
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}
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if (Router::$routes === NULL)
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{
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// Load routes
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Router::$routes = Kohana::config('routes');
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}
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// Default route status
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$default_route = FALSE;
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if (Router::$current_uri === '')
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{
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// Make sure the default route is set
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if (empty(Router::$routes['_default']))
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throw new Kohana_Exception('Please set a default route in config/routes.php.');
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// Use the default route when no segments exist
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Router::$current_uri = Router::$routes['_default'];
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// Default route is in use
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$default_route = TRUE;
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}
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// Remove all dot-paths from the URI, they are not valid
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Router::$current_uri = preg_replace('#\.[\s./]*/#', '', Router::$current_uri);
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// At this point routed URI and current URI are the same
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Router::$routed_uri = Router::$current_uri = trim(Router::$current_uri, '/');
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if ($default_route === TRUE)
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{
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Router::$complete_uri = Router::$query_string;
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Router::$current_uri = '';
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Router::$segments = array();
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}
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else
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{
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Router::$complete_uri = Router::$current_uri.Router::$query_string;
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// Explode the segments by slashes
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Router::$segments = explode('/', Router::$current_uri);
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if (count(Router::$routes) > 1)
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{
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// Custom routing
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Router::$routed_uri = Router::routed_uri(Router::$current_uri);
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}
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}
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// Explode the routed segments by slashes
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Router::$rsegments = explode('/', Router::$routed_uri);
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// Prepare to find the controller
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$controller_path = '';
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$method_segment = NULL;
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// Paths to search
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$paths = Kohana::include_paths();
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foreach (Router::$rsegments as $key => $segment)
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{
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// Add the segment to the search path
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$controller_path .= $segment;
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$found = FALSE;
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foreach ($paths as $dir)
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{
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// Search within controllers only
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$dir .= 'controllers/';
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if (is_dir($dir.$controller_path) OR is_file($dir.$controller_path.EXT))
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{
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// Valid path
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$found = TRUE;
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// The controller must be a file that exists with the search path
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if ($c = str_replace('\\', '/', realpath($dir.$controller_path.EXT))
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AND is_file($c) AND strpos($c, $dir) === 0)
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{
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// Set controller name
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Router::$controller = $segment;
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// Change controller path
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Router::$controller_path = $c;
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// Set the method segment
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$method_segment = $key + 1;
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// Stop searching
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break;
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}
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}
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}
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if ($found === FALSE)
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{
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// Maximum depth has been reached, stop searching
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break;
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}
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// Add another slash
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$controller_path .= '/';
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}
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if ($method_segment !== NULL AND isset(Router::$rsegments[$method_segment]))
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{
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// Set method
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Router::$method = Router::$rsegments[$method_segment];
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if (isset(Router::$rsegments[$method_segment + 1]))
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{
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// Set arguments
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Router::$arguments = array_slice(Router::$rsegments, $method_segment + 1);
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}
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}
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// Last chance to set routing before a 404 is triggered
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Event::run('system.post_routing');
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if (Router::$controller === NULL)
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{
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// No controller was found, so no page can be rendered
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Event::run('system.404');
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}
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}
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/**
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* Attempts to determine the current URI using CLI, GET, PATH_INFO, ORIG_PATH_INFO, or PHP_SELF.
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*
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* @return void
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*/
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public static function find_uri()
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{
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if (Kohana::$server_api === 'cli')
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{
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// Command line requires a bit of hacking
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if (isset($_SERVER['argv'][1]))
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{
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Router::$current_uri = $_SERVER['argv'][1];
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// Remove GET string from segments
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if (strpos(Router::$current_uri, '?') !== FALSE)
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{
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list(Router::$current_uri, $query) = explode('?', Router::$current_uri, 2);
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// Parse the query string into $_GET
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parse_str($query, $_GET);
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// Convert $_GET to UTF-8
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$_GET = Input::clean($_GET);
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}
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}
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}
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elseif (isset($_GET['kohana_uri']))
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{
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// Use the URI defined in the query string
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Router::$current_uri = $_GET['kohana_uri'];
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// Remove the URI from $_GET
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unset($_GET['kohana_uri']);
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// Remove the URI from $_SERVER['QUERY_STRING']
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$_SERVER['QUERY_STRING'] = preg_replace('~\bkohana_uri\b[^&]*+&?~', '', $_SERVER['QUERY_STRING']);
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}
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else
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{
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if (isset($_SERVER['PATH_INFO']) AND $_SERVER['PATH_INFO'])
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{
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Router::$current_uri = $_SERVER['PATH_INFO'];
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}
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elseif (isset($_SERVER['ORIG_PATH_INFO']) AND $_SERVER['ORIG_PATH_INFO'])
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{
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Router::$current_uri = $_SERVER['ORIG_PATH_INFO'];
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}
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elseif (isset($_SERVER['PHP_SELF']) AND $_SERVER['PHP_SELF'])
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{
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// PATH_INFO is empty during requests to the front controller
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Router::$current_uri = $_SERVER['PHP_SELF'];
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}
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if (isset($_SERVER['SCRIPT_NAME']) AND $_SERVER['SCRIPT_NAME'])
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{
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// Clean up PATH_INFO fallbacks
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// PATH_INFO may be formatted for ISAPI instead of CGI on IIS
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if (strncmp(Router::$current_uri, $_SERVER['SCRIPT_NAME'], strlen($_SERVER['SCRIPT_NAME'])) === 0)
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{
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// Remove the front controller from the current uri
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Router::$current_uri = (string) substr(Router::$current_uri, strlen($_SERVER['SCRIPT_NAME']));
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}
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}
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}
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// Remove slashes from the start and end of the URI
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Router::$current_uri = trim(Router::$current_uri, '/');
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if (Router::$current_uri !== '')
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{
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if ($suffix = Kohana::config('core.url_suffix') AND strpos(Router::$current_uri, $suffix) !== FALSE)
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{
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// Remove the URL suffix
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Router::$current_uri = preg_replace('#'.preg_quote($suffix).'$#u', '', Router::$current_uri);
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// Set the URL suffix
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Router::$url_suffix = $suffix;
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}
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// Reduce multiple slashes into single slashes
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Router::$current_uri = preg_replace('#//+#', '/', Router::$current_uri);
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}
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}
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/**
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* Generates routed URI from given URI.
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*
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* @param string URI to convert
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* @return string Routed uri
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*/
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public static function routed_uri($uri)
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{
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if (Router::$routes === NULL)
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{
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// Load routes
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Router::$routes = Kohana::config('routes');
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}
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// Prepare variables
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$routed_uri = $uri = trim($uri, '/');
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if (isset(Router::$routes[$uri]))
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{
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// Literal match, no need for regex
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$routed_uri = Router::$routes[$uri];
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}
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else
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{
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// Loop through the routes and see if anything matches
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foreach (Router::$routes as $key => $val)
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{
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if ($key === '_default') continue;
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// Trim slashes
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$key = trim($key, '/');
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$val = trim($val, '/');
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if (preg_match('#^'.$key.'$#u', $uri))
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{
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if (strpos($val, '$') !== FALSE)
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{
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// Use regex routing
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$routed_uri = preg_replace('#^'.$key.'$#u', $val, $uri);
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}
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else
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{
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// Standard routing
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$routed_uri = $val;
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}
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// A valid route has been found
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break;
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}
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}
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}
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if (isset(Router::$routes[$routed_uri]))
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{
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// Check for double routing (without regex)
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$routed_uri = Router::$routes[$routed_uri];
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}
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return trim($routed_uri, '/');
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}
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} // End Router
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