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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Bridge\Twig\Extension;
  13  
  14  use Symfony\Bridge\Twig\TokenParser\DumpTokenParser;
  15  use Symfony\Component\VarDumper\Cloner\ClonerInterface;
  16  use Symfony\Component\VarDumper\Dumper\HtmlDumper;
  17  use Twig\Environment;
  18  use Twig\Extension\AbstractExtension;
  19  use Twig\Template;
  20  use Twig\TwigFunction;
  21  
  22  /**
  23   * Provides integration of the dump() function with Twig.
  24   *
  25   * @author Nicolas Grekas <p@tchwork.com>
  26   */
  27  class DumpExtension extends AbstractExtension
  28  {
  29      private $cloner;
  30  
  31      public function __construct(ClonerInterface $cloner)
  32      {
  33          $this->cloner = $cloner;
  34      }
  35  
  36      public function getFunctions()
  37      {
  38          return array(
  39              new TwigFunction('dump', array($this, 'dump'), array('is_safe' => array('html'), 'needs_context' => true, 'needs_environment' => true)),
  40          );
  41      }
  42  
  43      public function getTokenParsers()
  44      {
  45          return array(new DumpTokenParser());
  46      }
  47  
  48      public function getName()
  49      {
  50          return 'dump';
  51      }
  52  
  53      public function dump(Environment $env, $context)
  54      {
  55          if (!$env->isDebug()) {
  56              return;
  57          }
  58  
  59          if (2 === \func_num_args()) {
  60              $vars = array();
  61              foreach ($context as $key => $value) {
  62                  if (!$value instanceof Template) {
  63                      $vars[$key] = $value;
  64                  }
  65              }
  66  
  67              $vars = array($vars);
  68          } else {
  69              $vars = \func_get_args();
  70              unset($vars[0], $vars[1]);
  71          }
  72  
  73          $dump = fopen('php://memory', 'r+b');
  74          $dumper = new HtmlDumper($dump, $env->getCharset());
  75  
  76          foreach ($vars as $value) {
  77              $dumper->dump($this->cloner->cloneVar($value));
  78          }
  79          rewind($dump);
  80  
  81          return stream_get_contents($dump);
  82      }
  83  }