initial commit of laravel!

system/router.php

@@ -0,0 +1,148 @@
+<?php namespace System;
+
+class Router {
+
+	/**
+	 * All of the loaded routes.
+	 *
+	 * @var array
+	 */
+	public static $routes;
+
+	/**
+	 * The named routes that have been found so far.
+	 *
+	 * @var array
+	 */
+	public static $names = array();
+
+	/**
+	 * Search a set of routes for the route matching a method and URI.
+	 *
+	 * @param  string  $method
+	 * @param  string  $uri
+	 * @return Route
+	 */
+	public static function route($method, $uri)
+	{
+		// --------------------------------------------------------------
+		// Add a forward slash to the URI if necessary.
+		// --------------------------------------------------------------
+		$uri = ($uri != '/') ? '/'.$uri : $uri;
+
+		// --------------------------------------------------------------
+		// Load all of the application routes.
+		// --------------------------------------------------------------
+		static::$routes = require APP_PATH.'routes'.EXT;
+
+		// --------------------------------------------------------------
+		// Is there an exact match for the request?
+		// --------------------------------------------------------------
+		if (isset(static::$routes[$method.' '.$uri]))
+		{
+			return new Route(static::$routes[$method.' '.$uri]);
+		}
+
+		// --------------------------------------------------------------
+		// No exact match... check each route individually.
+		// --------------------------------------------------------------
+		foreach (static::$routes as $keys => $callback)
+		{
+			// --------------------------------------------------------------
+			// Only check routes that have multiple URIs or wildcards.
+			// All other routes would have been caught by a literal match.
+			// --------------------------------------------------------------
+			if (strpos($keys, '(') !== false or strpos($keys, ',') !== false )
+			{
+				// --------------------------------------------------------------
+				// Multiple routes can be assigned to a callback using commas.
+				// --------------------------------------------------------------
+				foreach (explode(', ', $keys) as $route)
+				{
+					// --------------------------------------------------------------
+					// Change wildcards into regular expressions.
+					// --------------------------------------------------------------
+					$route = str_replace(':num', '[0-9]+', str_replace(':any', '.+', $route));
+
+					// --------------------------------------------------------------
+					// Test the route for a match.
+					// --------------------------------------------------------------
+					if (preg_match('#^'.$route.'$#', $method.' '.$uri))
+					{
+						return new Route($callback, static::parameters(explode('/', $uri), explode('/', $route)));
+					}
+				}				
+			}
+		}
+	}
+
+	/**
+	 * Find a route by name.
+	 *
+	 * @param  string  $name
+	 * @return array
+	 */
+	public static function find($name)
+	{
+		// ----------------------------------------------------
+		// Have we already looked up this named route?
+		// ----------------------------------------------------
+		if (array_key_exists($name, static::$names))
+		{
+			return static::$names[$name];
+		}
+
+		// ----------------------------------------------------
+		// Instantiate the recursive array iterator.
+		// ----------------------------------------------------
+		$arrayIterator = new \RecursiveArrayIterator(static::$routes);
+
+		// ----------------------------------------------------
+		// Instantiate the recursive iterator iterator.
+		// ----------------------------------------------------
+		$recursiveIterator = new \RecursiveIteratorIterator($arrayIterator);
+
+		// ----------------------------------------------------
+		// Iterate through the routes searching for a route
+		// name that matches the given name.
+		// ----------------------------------------------------
+		foreach ($recursiveIterator as $iterator)
+		{
+			$route = $recursiveIterator->getSubIterator();
+
+			if ($route['name'] == $name)
+			{
+				return static::$names[$name] = array($arrayIterator->key() => iterator_to_array($route));
+			}
+		}
+	}
+
+	/**
+	 * Get the parameters that should be passed to the route callback.
+	 *
+	 * @param  array  $uri_segments
+	 * @param  array  $route_segments
+	 * @return array
+	 */
+	private static function parameters($uri_segments, $route_segments)
+	{
+		$parameters = array();
+
+		// --------------------------------------------------------------
+		// Spin through the route segments looking for parameters.
+		// --------------------------------------------------------------
+		for ($i = 0; $i < count($route_segments); $i++)
+		{
+			// --------------------------------------------------------------
+			// Any segment wrapped in parentheses is a parameter.
+			// --------------------------------------------------------------
+			if (strpos($route_segments[$i], '(') === 0)
+			{
+				$parameters[] = $uri_segments[$i];
+			}
+		}
+
+		return $parameters;		
+	}
+
+}