DependsCommand.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 Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Console\Input\InputArgument;
use Composer\Console\Input\InputOption;

/**
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class DependsCommand extends BaseDependencyCommand {
    use CompletionTrait;
    
    /**
     * Configure command metadata.
     */
    protected function configure() : void {
        $this->setName('depends')
            ->setAliases([
            'why',
        ])
            ->setDescription('Shows which packages cause the given package to be installed')
            ->setDefinition([
            new InputArgument(self::ARGUMENT_PACKAGE, InputArgument::REQUIRED, 'Package to inspect', null, $this->suggestInstalledPackage(true, true)),
            new InputOption(self::OPTION_RECURSIVE, 'r', InputOption::VALUE_NONE, 'Recursively resolves up to the root package'),
            new InputOption(self::OPTION_TREE, 't', InputOption::VALUE_NONE, 'Prints the results as a nested tree'),
            new InputOption('locked', null, InputOption::VALUE_NONE, 'Read dependency information from composer.lock'),
        ])
            ->setHelp(<<<EOT
Displays detailed information about where a package is referenced.

<info>php composer.phar depends composer/composer</info>

Read more at https://getcomposer.org/doc/03-cli.md#depends-why
EOT
);
    }
    protected function execute(InputInterface $input, OutputInterface $output) : int {
        return parent::doExecute($input, $output);
    }

}