DebugHandlersListener.php in Zircon Profile 8

Namespace

Symfony\Component\HttpKernel\EventListener

File

vendor/symfony/http-kernel/EventListener/DebugHandlersListener.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * 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\Debug\ErrorHandler;
use Symfony\Component\Debug\ExceptionHandler;
use Symfony\Component\EventDispatcher\Event;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\KernelEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\Console\ConsoleEvents;
use Symfony\Component\Console\Event\ConsoleEvent;
use Symfony\Component\Console\Output\ConsoleOutputInterface;

/**
 * Configures errors and exceptions handlers.
 *
 * @author Nicolas Grekas <[e-mail]>
 */
class DebugHandlersListener implements EventSubscriberInterface {
  private $exceptionHandler;
  private $logger;
  private $levels;
  private $throwAt;
  private $scream;
  private $fileLinkFormat;
  private $firstCall = true;

  /**
   * @param callable|null        $exceptionHandler A handler that will be called on Exception
   * @param LoggerInterface|null $logger           A PSR-3 logger
   * @param array|int            $levels           An array map of E_* to LogLevel::* or an integer bit field of E_* constants
   * @param int|null             $throwAt          Thrown errors in a bit field of E_* constants, or null to keep the current value
   * @param bool                 $scream           Enables/disables screaming mode, where even silenced errors are logged
   * @param string               $fileLinkFormat   The format for links to source files
   */
  public function __construct($exceptionHandler, LoggerInterface $logger = null, $levels = null, $throwAt = -1, $scream = true, $fileLinkFormat = null) {
    $this->exceptionHandler = $exceptionHandler;
    $this->logger = $logger;
    $this->levels = $levels;
    $this->throwAt = is_numeric($throwAt) ? (int) $throwAt : (null === $throwAt ? null : ($throwAt ? -1 : null));
    $this->scream = (bool) $scream;
    $this->fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
  }

  /**
   * Configures the error handler.
   *
   * @param Event|null $event The triggering event
   */
  public function configure(Event $event = null) {
    if (!$this->firstCall) {
      return;
    }
    $this->firstCall = false;
    if ($this->logger || null !== $this->throwAt) {
      $handler = set_error_handler('var_dump', 0);
      $handler = is_array($handler) ? $handler[0] : null;
      restore_error_handler();
      if ($handler instanceof ErrorHandler) {
        if ($this->logger) {
          $handler
            ->setDefaultLogger($this->logger, $this->levels);
          if (is_array($this->levels)) {
            $scream = 0;
            foreach ($this->levels as $type => $log) {
              $scream |= $type;
            }
          }
          else {
            $scream = null === $this->levels ? E_ALL | E_STRICT : $this->levels;
          }
          if ($this->scream) {
            $handler
              ->screamAt($scream);
          }
          $this->logger = $this->levels = null;
        }
        if (null !== $this->throwAt) {
          $handler
            ->throwAt($this->throwAt, true);
        }
      }
    }
    if (!$this->exceptionHandler) {
      if ($event instanceof KernelEvent) {
        $this->exceptionHandler = array(
          $event
            ->getKernel(),
          'terminateWithException',
        );
      }
      elseif ($event instanceof ConsoleEvent && ($app = $event
        ->getCommand()
        ->getApplication())) {
        $output = $event
          ->getOutput();
        if ($output instanceof ConsoleOutputInterface) {
          $output = $output
            ->getErrorOutput();
        }
        $this->exceptionHandler = function ($e) use ($app, $output) {
          $app
            ->renderException($e, $output);
        };
      }
    }
    if ($this->exceptionHandler) {
      $handler = set_exception_handler('var_dump');
      $handler = is_array($handler) ? $handler[0] : null;
      restore_exception_handler();
      if ($handler instanceof ErrorHandler) {
        $h = $handler
          ->setExceptionHandler('var_dump') ?: $this->exceptionHandler;
        $handler
          ->setExceptionHandler($h);
        $handler = is_array($h) ? $h[0] : null;
      }
      if ($handler instanceof ExceptionHandler) {
        $handler
          ->setHandler($this->exceptionHandler);
        if (null !== $this->fileLinkFormat) {
          $handler
            ->setFileLinkFormat($this->fileLinkFormat);
        }
      }
      $this->exceptionHandler = null;
    }
  }
  public static function getSubscribedEvents() {
    $events = array(
      KernelEvents::REQUEST => array(
        'configure',
        2048,
      ),
    );
    if (defined('Symfony\\Component\\Console\\ConsoleEvents::COMMAND')) {
      $events[ConsoleEvents::COMMAND] = array(
        'configure',
        2048,
      );
    }
    return $events;
  }

}

Classes

Name	Description
DebugHandlersListener	Configures errors and exceptions handlers.