AboutCommand.php

<?php

declare (strict_types=1);

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Composer\Command;

use Composer\Composer;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AboutCommand extends BaseCommand {
    protected function configure() : void {
        $this->setName('about')
            ->setDescription('Shows a short information about Composer')
            ->setHelp(<<<EOT
<info>php composer.phar about</info>
EOT
);
    }
    protected function execute(InputInterface $input, OutputInterface $output) : int {
        $composerVersion = Composer::getVersion();
        $this->getIO()
            ->write(<<<EOT
<info>Composer - Dependency Manager for PHP - version {<span class="php-variable">$composerVersion</span>}</info>
<comment>Composer is a dependency manager tracking local dependencies of your projects and libraries.
See https://getcomposer.org/ for more information.</comment>
EOT
);
        return 0;
    }

}