1 files changed, 100 insertions, 0 deletions
diff --git a/lib/appframework/http/dispatcher.php b/lib/appframework/http/dispatcher.php
new file mode 100644
index 00000000000..ea57a6860cc
--- /dev/null
+++ b/lib/appframework/http/dispatcher.php
@@ -0,0 +1,100 @@
+<?php
+
+/**
+ * ownCloud - App Framework
+ *
+ * @author Bernhard Posselt, Thomas Tanghus, Bart Visscher
+ * @copyright 2012 Bernhard Posselt nukeawhale@gmail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OC\AppFramework\Http;
+
+use \OC\AppFramework\Controller\Controller;
+use \OC\AppFramework\Middleware\MiddlewareDispatcher;
+
+
+/**
+ * Class to dispatch the request to the middleware dispatcher
+ */
+class Dispatcher {
+
+	private $middlewareDispatcher;
+	private $protocol;
+
+
+	/**
+	 * @param Http $protocol the http protocol with contains all status headers
+	 * @param MiddlewareDispatcher $middlewareDispatcher the dispatcher which
+	 * runs the middleware
+	 */
+	public function __construct(Http $protocol,
+	                            MiddlewareDispatcher $middlewareDispatcher) {
+		$this->protocol = $protocol;
+		$this->middlewareDispatcher = $middlewareDispatcher;
+	}
+
+
+	/**
+	 * Handles a request and calls the dispatcher on the controller
+	 * @param Controller $controller the controller which will be called
+	 * @param string $methodName the method name which will be called on
+	 * the controller
+	 * @return array $array[0] contains a string with the http main header,
+	 * $array[1] contains headers in the form: $key => value, $array[2] contains
+	 * the response output
+	 */
+	public function dispatch(Controller $controller, $methodName) {
+		$out = array(null, array(), null);
+
+		try {
+
+			$this->middlewareDispatcher->beforeController($controller,
+				$methodName);
+			$response = $controller->$methodName();
+
+			// if an exception appears, the middleware checks if it can handle the
+			// exception and creates a response. If no response is created, it is
+			// assumed that theres no middleware who can handle it and the error is
+			// thrown again
+		} catch(\Exception $exception){
+			$response = $this->middlewareDispatcher->afterException(
+				$controller, $methodName, $exception);
+			if (is_null($response)) {
+				throw $exception;
+			}
+		}
+
+		$response = $this->middlewareDispatcher->afterController(
+			$controller, $methodName, $response);
+
+		// get the output which should be printed and run the after output
+		// middleware to modify the response
+		$output = $response->render();
+		$out[2] = $this->middlewareDispatcher->beforeOutput(
+			$controller, $methodName, $output);
+
+		// depending on the cache object the headers need to be changed
+		$out[0] = $this->protocol->getStatusHeader($response->getStatus(),
+			$response->getLastModified(), $response->getETag());
+		$out[1] = $response->getHeaders();
+
+		return $out;
+	}
+
+
+}