Add command for outputting the latest version number

Command/MigrationsLatestDoctrineCommand.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of the Doctrine MigrationsBundle
+ *
+ * The code was originally distributed inside the Symfony framework.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ * (c) Doctrine Project, Benjamin Eberlei <kontakt@beberlei.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Doctrine\Bundle\MigrationsBundle\Command;
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Doctrine\Bundle\DoctrineBundle\Command\Proxy\DoctrineCommandHelper;
+use Doctrine\DBAL\Migrations\Tools\Console\Command\LatestCommand;
+
+/**
+ * Command for outputting the latest version number.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Jonathan H. Wage <jonwage@gmail.com>
+ */
+class MigrationsLatestDoctrineCommand extends LatestCommand
+{
+    protected function configure()
+    {
+        parent::configure();
+
+        $this
+            ->setName('doctrine:migrations:latest')
+            ->addOption('em', null, InputOption::VALUE_OPTIONAL, 'The entity manager to use for this command.')
+        ;
+    }
+
+    public function execute(InputInterface $input, OutputInterface $output)
+    {
+        DoctrineCommandHelper::setApplicationEntityManager($this->getApplication(), $input->getOption('em'));
+
+        $configuration = $this->getMigrationConfiguration($input, $output);
+        DoctrineCommand::configureMigrations($this->getApplication()->getKernel()->getContainer(), $configuration);
+
+        parent::execute($input, $output);
+    }
+}