Classes List

Symfony\Component\Console\Command\HelpCommand

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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\Component\Console\Command;

use Symfony\Component\Console\Helper\DescriptorHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/** * HelpCommand displays the help for a given command. * * @author Fabien Potencier <fabien@symfony.com> */
class HelpCommand extends Command
{
    private $command;

    /** * {@inheritdoc} */
    protected function configure()
    {
        $this->ignoreValidationErrors();

        $this
            ->setName('help')
            ->setDefinition(array(
                new InputArgument('command_name'InputArgument::OPTIONAL'The command name''help'),
                new InputOption('format'nullInputOption::VALUE_REQUIRED'The output format (txt, xml, json, or md)''txt'),
                new InputOption('raw'nullInputOption::VALUE_NONE'To output raw command help'),
            ))
            ->setDescription('Displays help for a command')
            ->setHelp(<<<'EOF' The <info>%command.name%</info> command displays help for a given command: <info>php %command.full_name% list</info> You can also output the help in other formats by using the <comment>--format</comment> option: <info>php %command.full_name% --format=xml list</info> To display the list of available commands, please use the <info>list</info> command. EOF
            )
        ;
    }

    public function setCommand(Command $command)
    {
        $this->command = $command;
    }

    /** * {@inheritdoc} */
    protected function execute(InputInterface $inputOutputInterface $output)
    {
        if (null === $this->command) {
            $this->command = $this->getApplication()->find($input->getArgument('command_name'));
        }

        $helper = new DescriptorHelper();
        $helper->describe($output$this->commandarray(
            'format' => $input->getOption('format'),
            'raw_text' => $input->getOption('raw'),
        ));

        $this->command = null;
    }
}