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✏️ Editing: DebugHandlersListener.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 Psr\Log\LoggerInterface;
use Symfony\Component\Console\ConsoleEvents;
use Symfony\Component\Console\Event\ConsoleEvent;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\ErrorHandler\ErrorHandler;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\KernelEvent;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * Sets an exception handler.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @final
 *
 * @internal
 */
class DebugHandlersListener implements EventSubscriberInterface
{
    private string|object|null $earlyHandler;
    private ?\Closure $exceptionHandler;
    private bool $webMode;
    private bool $firstCall = true;
    private bool $hasTerminatedWithException = false;

/**
     * @param bool          $webMode
     * @param callable|null $exceptionHandler A handler that must support \Throwable instances that will be called on Exception
     */
    public function __construct(?callable $exceptionHandler = null, bool|LoggerInterface|null $webMode = null)
    {
        if ($webMode instanceof LoggerInterface) {
            // BC with Symfony 5
            $webMode = null;
        }
        $handler = set_exception_handler('is_int');
        $this->earlyHandler = \is_array($handler) ? $handler[0] : null;
        restore_exception_handler();

$this->exceptionHandler = null === $exceptionHandler ? null : $exceptionHandler(...);
        $this->webMode = $webMode ?? !\in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true);
    }

/**
     * Configures the error handler.
     */
    public function configure(?object $event = null): void
    {
        if ($event instanceof ConsoleEvent && $this->webMode) {
            return;
        }
        if (!$event instanceof KernelEvent ? !$this->firstCall : !$event->isMainRequest()) {
            return;
        }
        $this->firstCall = $this->hasTerminatedWithException = false;

if (!$this->exceptionHandler) {
            if ($event instanceof KernelEvent) {
                if (method_exists($kernel = $event->getKernel(), 'terminateWithException')) {
                    $request = $event->getRequest();
                    $hasRun = &$this->hasTerminatedWithException;
                    $this->exceptionHandler = static function (\Throwable $e) use ($kernel, $request, &$hasRun) {
                        if ($hasRun) {
                            throw $e;
                        }

$hasRun = true;
                        $kernel->terminateWithException($e, $request);
                    };
                }
            } elseif ($event instanceof ConsoleEvent && $app = $event->getCommand()->getApplication()) {
                $output = $event->getOutput();
                if ($output instanceof ConsoleOutputInterface) {
                    $output = $output->getErrorOutput();
                }
                $this->exceptionHandler = static function (\Throwable $e) use ($app, $output) {
                    $app->renderThrowable($e, $output);
                };
            }
        }
        if ($this->exceptionHandler) {
            $handler = set_exception_handler(static fn () => null);
            $handler = \is_array($handler) ? $handler[0] : null;
            restore_exception_handler();

if (!$handler instanceof ErrorHandler) {
                $handler = $this->earlyHandler;
            }

if ($handler instanceof ErrorHandler) {
                $handler->setExceptionHandler($this->exceptionHandler);
            }
            $this->exceptionHandler = null;
        }
    }

public static function getSubscribedEvents(): array
    {
        $events = [KernelEvents::REQUEST => ['configure', 2048]];

if (\defined('Symfony\Component\Console\ConsoleEvents::COMMAND')) {
            $events[ConsoleEvents::COMMAND] = ['configure', 2048];
        }

return $events;
    }
}

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