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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\FrameworkBundle\Command;
use Symfony\Bundle\FrameworkBundle\Console\Helper\DescriptorHelper;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
/**
* A console command for retrieving information about event dispatcher.
*
* @author Matthieu Auger <mail@matthieuauger.com>
*
* @final
*/
class EventDispatcherDebugCommand extends Command
{
protected static $defaultName = 'debug:event-dispatcher';
private $dispatcher;
public function __construct(EventDispatcherInterface $dispatcher)
{
parent::__construct();
$this->dispatcher = $dispatcher;
}
/**
* {@inheritdoc}
*/
protected function configure()
{
$this
->setDefinition([
new InputArgument('event', InputArgument::OPTIONAL, 'An event name'),
new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
])
->setDescription('Display configured listeners for an application')
->setHelp(<<<'EOF'
The <info>%command.name%</info> command displays all configured listeners:
<info>php %command.full_name%</info>
To get specific listeners for an event, specify its name:
<info>php %command.full_name% kernel.request</info>
EOF
)
;
}
/**
* {@inheritdoc}
*
* @throws \LogicException
*/
protected function execute(InputInterface $input, OutputInterface $output): int
{
$io = new SymfonyStyle($input, $output);
$options = [];
if ($event = $input->getArgument('event')) {
if (!$this->dispatcher->hasListeners($event)) {
$io->getErrorStyle()->warning(sprintf('The event "%s" does not have any registered listeners.', $event));
return 0;
}
$options = ['event' => $event];
}
$helper = new DescriptorHelper();
$options['format'] = $input->getOption('format');
$options['raw_text'] = $input->getOption('raw');
$options['output'] = $io;
$helper->describe($io, $this->dispatcher, $options);
return 0;
}
}
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