--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Testwork\Ordering\Cli;
+
+use Behat\Testwork\Ordering\Exception\InvalidOrderException;
+use Behat\Testwork\Ordering\OrderedExercise;
+use Behat\Testwork\Ordering\Orderer\Orderer;
+use Behat\Testwork\Cli\Controller;
+use Symfony\Component\Console\Command\Command as SymfonyCommand;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+/**
+ * Preloads scenarios and then modifies the order when --order is passed
+ *
+ * @author Ciaran McNulty <mail@ciaranmcnulty.com>
+ */
+final class OrderController implements Controller
+{
+ /**
+ * @var EventDispatcherInterface
+ */
+ private $eventDispatcher;
+ /**
+ * @var OrderedExercise
+ */
+ private $exercise;
+ /**
+ * @var array
+ */
+ private $orderers = array();
+
+ /**
+ * Initializes controller.
+ *
+ * @param EventDispatcherInterface $eventDispatcher
+ * @param OrderedExercise $exercise
+ */
+ public function __construct(EventDispatcherInterface $eventDispatcher, OrderedExercise $exercise)
+ {
+ $this->eventDispatcher = $eventDispatcher;
+ $this->exercise = $exercise;
+ }
+
+ /**
+ * Configures command to be executable by the controller.
+ *
+ * @param SymfonyCommand $command
+ */
+ public function configure(SymfonyCommand $command)
+ {
+ $command->addOption('--order', null, InputOption::VALUE_REQUIRED,
+ 'Set an order in which to execute the specifications (this will result in slower feedback).'
+ );
+ }
+
+ /**
+ * Executes controller.
+ *
+ * @param InputInterface $input
+ * @param OutputInterface $output
+ *
+ * @return null|integer
+ */
+ public function execute(InputInterface $input, OutputInterface $output)
+ {
+ $orderer = $input->getOption('order');
+
+ if (!$orderer) {
+ return;
+ }
+
+ if (!array_key_exists($orderer, $this->orderers)) {
+ throw new InvalidOrderException(sprintf("Order option '%s' was not recognised", $orderer));
+ }
+
+ $this->exercise->setOrderer($this->orderers[$orderer]);
+ }
+
+ /**
+ * Register a new available controller
+ *
+ * @param Orderer $orderer
+ */
+ public function registerOrderer(Orderer $orderer)
+ {
+ $this->orderers[$orderer->getName()] = $orderer;
+ }
+}