[feature/controller] Implement a front controller

PHPBB3-10864

phpBB/includes/controller/resolver.php

@@ -0,0 +1,123 @@
+<?php
+/**
+*
+* @package controller
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+* Controller manager class
+* @package phpBB3
+*/
+class phpbb_controller_resolver implements ControllerResolverInterface
+{
+	/**
+	* User object
+	* @var phpbb_user
+	*/
+	protected $user;
+
+	/**
+	* ContainerInterface object
+	* @var ContainerInterface
+	*/
+	protected $container;
+
+	/**
+	* Construct method
+	*
+	* @param phpbb_user $user User Object
+	* @param ContainerInterface $container ContainerInterface object
+	*/
+	public function __construct(phpbb_user $user, ContainerInterface $container)
+	{
+		$this->user = $user;
+		$this->container = $container;
+	}
+
+	/**
+	* Load a controller callable
+	*
+	* @param Symfony\Component\HttpFoundation\Request $request Symfony Request object
+	* @return bool|Callable Callable or false
+	* @throws RuntimeException
+	*/
+	public function getController(Request $request)
+	{
+		$controller = $request->attributes->get('_controller');
+
+		if (!$controller)
+		{
+			throw new RuntimeException($this->user->lang['CONTROLLER_NOT_SPECIFIED']);
+		}
+
+		// Require a method name along with the service name
+		if (stripos($controller, ':') === false)
+		{
+			throw new RuntimeException($this->user->lang['CONTROLLER_METHOD_NOT_SPECIFIED']);
+		}
+
+		list($service, $method) = explode(':', $controller);
+
+		if (!$this->container->has($service))
+		{
+			throw new RuntimeException($this->user->lang('CONTROLLER_SERVICE_UNDEFINED', $service));
+		}
+
+		$controller_object = $this->container->get($service);
+
+		return array($controller_object, $method);
+	}
+
+	/**
+	* Dependencies should be specified in the service definition and can be
+	* then accessed in __construct(). Arguments are sent through the URL path
+	* and should match the parameters of the method you are using as your
+	* controller.
+	*
+	* @param Symfony\Component\HttpFoundation\Request $request Symfony Request object
+	* @param string $controller Controller class name
+	* @return bool False
+	*/
+	public function getArguments(Request $request, $controller)
+	{
+		// At this point, $controller contains the object and method name
+		list($object, $method) = $controller;
+		$mirror = new ReflectionMethod($object, $method);
+
+		$arguments = array();
+		$parameters = $mirror->getParameters();
+		$attributes = $request->attributes->all();
+		foreach ($parameters as $param)
+		{
+			if (array_key_exists($param->name, $attributes))
+			{
+				$arguments[] = $attributes[$param->name];
+			}
+			else if ($param->isDefaultValueAvailable())
+			{
+				$arguments[] = $param->getDefaultValue();
+			}
+			else
+			{
+				throw new RuntimeException($user->lang('CONTROLLER_ARGUMENT_VALUE_MISSING', $param->getPosition() + 1, get_class($object) . ':' . $method, $param->name));
+			}
+		}
+
+		return $arguments;
+	}
+}