95 lines
2.3 KiB
PHP
95 lines
2.3 KiB
PHP
<?php namespace System;
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class Router {
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/**
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* All of the loaded routes.
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*
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* @var array
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*/
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public static $routes;
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/**
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* Search a set of routes for the route matching a method and URI.
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*
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* @param string $method
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* @param string $uri
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* @return Route
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*/
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public static function route($method, $uri)
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{
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if (is_null(static::$routes))
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{
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static::$routes = static::load($uri);
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}
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// Put the request method and URI in route form.
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// Routes begin with the request method and a forward slash.
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$uri = $method.' /'.trim($uri, '/');
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// Is there an exact match for the request?
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if (isset(static::$routes[$uri]))
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{
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return Request::$route = new Route($uri, static::$routes[$uri]);
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}
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foreach (static::$routes as $keys => $callback)
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{
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// Only check routes that have multiple URIs or wildcards.
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// Other routes would have been caught by the check for literal matches.
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if (strpos($keys, '(') !== false or strpos($keys, ',') !== false )
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{
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foreach (explode(', ', $keys) as $key)
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{
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$key = str_replace(':num', '[0-9]+', str_replace(':any', '[a-zA-Z0-9\-_]+', $key));
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if (preg_match('#^'.$key.'$#', $uri))
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{
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return Request::$route = new Route($keys, $callback, static::parameters($uri, $key));
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}
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}
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}
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}
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}
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/**
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* Load the appropriate route file for the request URI.
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*
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* @param string $uri
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* @return array
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*/
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public static function load($uri)
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{
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$base = require APP_PATH.'routes'.EXT;
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return (is_dir(APP_PATH.'routes') and $uri !== '') ? array_merge(static::load_from_directory($uri), $base) : $base;
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}
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/**
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* Load the appropriate route file from the routes directory.
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*
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* @param string $uri
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* @return array
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*/
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private static function load_from_directory($uri)
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{
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$segments = explode('/', $uri);
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return (file_exists($path = APP_PATH.'routes/'.$segments[0].EXT)) ? require $path : array();
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}
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/**
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* Extract the parameters from a URI based on a route URI.
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*
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* Any route segment wrapped in parentheses is considered a parameter.
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*
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* @param string $uri
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* @param string $route
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* @return array
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*/
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public static function parameters($uri, $route)
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{
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return array_values(array_intersect_key(explode('/', $uri), preg_grep('/\(.+\)/', explode('/', $route))));
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}
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} |