vendor/symfony/swiftmailer-bundle/Command/DebugCommand.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bundle\SwiftmailerBundle\Command;

use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;

/**
 * A console command for retrieving information about mailers.
 *
 * @author Jérémy Romey <jeremy@free-agent.fr>
 */
class DebugCommand extends ContainerAwareCommand
{
    /** @var SymfonyStyle */
    private $io;

    /**
     * @see Command
     */
    protected function configure()
    {
        $this
            ->setName('debug:swiftmailer')
            ->setAliases(array(
                'swiftmailer:debug',
            ))
            ->setDefinition(array(
                new InputArgument('name', InputArgument::OPTIONAL, 'A mailer name'),
            ))
            ->setDescription('Displays current mailers for an application')
            ->setHelp(<<<EOF
The <info>%command.name%</info> displays the configured mailers:

  <info>php %command.full_name% mailer-name</info>
EOF
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->io = new SymfonyStyle($input, $output);
        $name = $input->getArgument('name');

        if ($name) {