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<?php defined('SYSPATH') or die('No direct script access.');
/**
 * Request Client for internal execution
 *
 * @package    Kohana
 * @category   Base
 * @author     Kohana Team
 * @copyright  (c) 2008-2011 Kohana Team
 * @license    http://kohanaframework.org/license
 * @since      3.1.0
 */
class Kohana_Request_Client_Internal extends Request_Client {

/**
	 * @var    array
	 */
	protected $_previous_environment;

/**
	 * Processes the request, executing the controller action that handles this
	 * request, determined by the [Route].
	 *
	 * 1. Before the controller action is called, the [Controller::before] method
	 * will be called.
	 * 2. Next the controller action will be called.
	 * 3. After the controller action is called, the [Controller::after] method
	 * will be called.
	 *
	 * By default, the output from the controller is captured and returned, and
	 * no headers are sent.
	 *
	 *     $request->execute();
	 *
	 * @param   Request $request
	 * @return  Response
	 * @throws  Kohana_Exception
	 * @uses    [Kohana::$profiling]
	 * @uses    [Profiler]
	 * @deprecated passing $params to controller methods deprecated since version 3.1
	 *             will be removed in 3.2
	 */
	public function execute_request(Request $request)
	{
		// Create the class prefix
		$prefix = 'controller_';

// Directory
		$directory = $request->directory();

// Controller
		$controller = $request->controller();

if ($directory)
		{
			// Add the directory name to the class prefix
			$prefix .= str_replace(array('\\', '/'), '_', trim($directory, '/')).'_';
		}

if (Kohana::$profiling)
		{
			// Set the benchmark name
			$benchmark = '"'.$request->uri().'"';

if ($request !== Request::$initial AND Request::$current)
			{
				// Add the parent request uri
				$benchmark .= ' « "'.Request::$current->uri().'"';
			}

// Start benchmarking
			$benchmark = Profiler::start('Requests', $benchmark);
		}

// Store the currently active request
		$previous = Request::$current;

// Change the current request to this request
		Request::$current = $request;

// Is this the initial request
		$initial_request = ($request === Request::$initial);

try
		{
			if ( ! class_exists($prefix.$controller))
			{
				throw new HTTP_Exception_404('The requested URL :uri was not found on this server.',
													array(':uri' => $request->uri()));
			}

// Load the controller using reflection
			$class = new ReflectionClass($prefix.$controller);

if ($class->isAbstract())
			{
				throw new Kohana_Exception('Cannot create instances of abstract :controller',
					array(':controller' => $prefix.$controller));
			}

// Create a new instance of the controller
			$controller = $class->newInstance($request, $request->response() ? $request->response() : $request->create_response());

$class->getMethod('before')->invoke($controller);

// Determine the action to use
			$action = $request->action();

$params = $request->param();

// If the action doesn't exist, it's a 404
			if ( ! $class->hasMethod('action_'.$action))
			{
				throw new HTTP_Exception_404('The requested URL :uri was not found on this server.',
													array(':uri' => $request->uri()));
			}

$method = $class->getMethod('action_'.$action);
			$method->invoke($controller);

// Execute the "after action" method
			$class->getMethod('after')->invoke($controller);
		}
		catch (Exception $e)
		{
			// Restore the previous request
			if ($previous instanceof Request)
			{
				Request::$current = $previous;
			}

if (isset($benchmark))
			{
				// Delete the benchmark, it is invalid
				Profiler::delete($benchmark);
			}

// Re-throw the exception
			throw $e;
		}

// Restore the previous request
		Request::$current = $previous;

if (isset($benchmark))
		{
			// Stop the benchmark
			Profiler::stop($benchmark);
		}

// Return the response
		return $request->response();
	}
} // End Kohana_Request_Client_Internal