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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\Component\Yaml\Dumper as YamlDumper;
  15  use Symfony\Component\Yaml\Yaml;
  16  use Twig\Extension\AbstractExtension;
  17  use Twig\TwigFilter;
  18  
  19  /**
  20   * Provides integration of the Yaml component with Twig.
  21   *
  22   * @author Fabien Potencier <fabien@symfony.com>
  23   */
  24  class YamlExtension extends AbstractExtension
  25  {
  26      /**
  27       * {@inheritdoc}
  28       */
  29      public function getFilters()
  30      {
  31          return [
  32              new TwigFilter('yaml_encode', [$this, 'encode']),
  33              new TwigFilter('yaml_dump', [$this, 'dump']),
  34          ];
  35      }
  36  
  37      public function encode($input, $inline = 0, $dumpObjects = 0)
  38      {
  39          static $dumper;
  40  
  41          if (null === $dumper) {
  42              $dumper = new YamlDumper();
  43          }
  44  
  45          if (\defined('Symfony\Component\Yaml\Yaml::DUMP_OBJECT')) {
  46              if (\is_bool($dumpObjects)) {
  47                  @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', \E_USER_DEPRECATED);
  48  
  49                  $flags = $dumpObjects ? Yaml::DUMP_OBJECT : 0;
  50              } else {
  51                  $flags = $dumpObjects;
  52              }
  53  
  54              return $dumper->dump($input, $inline, 0, $flags);
  55          }
  56  
  57          return $dumper->dump($input, $inline, 0, false, $dumpObjects);
  58      }
  59  
  60      public function dump($value, $inline = 0, $dumpObjects = false)
  61      {
  62          if (\is_resource($value)) {
  63              return '%Resource%';
  64          }
  65  
  66          if (\is_array($value) || \is_object($value)) {
  67              return '%'.\gettype($value).'% '.$this->encode($value, $inline, $dumpObjects);
  68          }
  69  
  70          return $this->encode($value, $inline, $dumpObjects);
  71      }
  72  
  73      /**
  74       * {@inheritdoc}
  75       */
  76      public function getName()
  77      {
  78          return 'yaml';
  79      }
  80  }