DumpListener.php

<?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\HttpKernel\EventListener;

use Symfony\Component\Console\ConsoleEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\VarDumper\Cloner\ClonerInterface;
use Symfony\Component\VarDumper\Dumper\DataDumperInterface;
use Symfony\Component\VarDumper\Server\Connection;
use Symfony\Component\VarDumper\VarDumper;

/**
 * Configures dump() handler.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class DumpListener implements EventSubscriberInterface {
    public function __construct(ClonerInterface $cloner, DataDumperInterface $dumper, ?Connection $connection = null) {
    }
    public function configure() : void {
        $cloner = $this->cloner;
        $dumper = $this->dumper;
        $connection = $this->connection;
        VarDumper::setHandler(static function ($var, ?string $label = null) use ($cloner, $dumper, $connection) {
            $data = $cloner->cloneVar($var);
            if (null !== $label) {
                $data = $data->withContext([
                    'label' => $label,
                ]);
            }
            if (!$connection || !$connection->write($data)) {
                $dumper->dump($data);
            }
        });
    }
    public static function getSubscribedEvents() : array {
        if (!class_exists(ConsoleEvents::class)) {
            return [];
        }
        // Register early to have a working dump() as early as possible
        return [
            ConsoleEvents::COMMAND => [
                'configure',
                1024,
            ],
        ];
    }

}