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vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/Optional.php 1.18 KB
abf1649b   andryeyev   Чистая установка ...
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  <?php
  
  /**
   * Definition that allows a set of elements, and allows no children.
   * @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
   *       really, one shouldn't inherit from the other.  Only altered behavior
   *       is to overload a returned false with an array.  Thus, it will never
   *       return false.
   */
  class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
  {
      /**
       * @type bool
       */
      public $allow_empty = true;
  
      /**
       * @type string
       */
      public $type = 'optional';
  
      /**
       * @param array $children
       * @param HTMLPurifier_Config $config
       * @param HTMLPurifier_Context $context
       * @return array
       */
      public function validateChildren($children, $config, $context)
      {
          $result = parent::validateChildren($children, $config, $context);
          // we assume that $children is not modified
          if ($result === false) {
              if (empty($children)) {
                  return true;
              } elseif ($this->whitespace) {
                  return $children;
              } else {
                  return array();
              }
          }
          return $result;
      }
  }
  
  // vim: et sw=4 sts=4