gnu-social/src/Command/ListEventsCommand.php

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<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
/**
* Command to search for event by pattern
*
* @package GNUsocial
* @category Command
*
* @author Hugo Sales <hugo@fc.up.pt>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace App\Command;
use Functional as F;
use ReflectionFunction;
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\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
class ListEventsCommand extends Command
{
protected static $defaultName = 'app:events';
private EventDispatcherInterface $dispatcher;
public function __construct(EventDispatcherInterface $dispatcher)
{
parent::__construct();
$this->dispatcher = $dispatcher;
}
protected function configure()
{
$this->setDefinition([new InputArgument('pattern', InputArgument::OPTIONAL, 'An event pattern to look for')])
->setDescription('Search for an event')
->setHelp(<<<'EOF'
The <info>%command.name%</info> command displays GNU social event 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
);
}
protected function execute(InputInterface $input, OutputInterface $output): int
{
$patterm = $input->getArgument('pattern') ?? 'GNUsocial.*';
$listeners = $this->dispatcher->getListeners();
$listeners = F\select($listeners,
function ($_, $key, $__) use ($patterm) {
return preg_match('/' . $patterm . '/', $key);
});
echo "\n";
foreach ($listeners as $event => $listener) {
echo "Event '{$event}':\n";
foreach ($listener as $c) {
$r = new ReflectionFunction($c);
$m = $r->getStaticVariables()['handler'];
echo ' ' . get_class($m[0]) . '::' . $m[1] . "\n";
}
echo "\n";
}
if (!$input->hasArgument('pattern')) {
$io = new SymfonyStyle($input, $output);
$options = [];
$helper = new DescriptorHelper();
$options['output'] = $io;
$helper->describe($io, null, $options);
}
return 0;
}
}