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vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform.php 1.94 KB
abf1649b   andryeyev   Чистая установка ...
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  <?php
  
  /**
   * Processes an entire attribute array for corrections needing multiple values.
   *
   * Occasionally, a certain attribute will need to be removed and popped onto
   * another value.  Instead of creating a complex return syntax for
   * HTMLPurifier_AttrDef, we just pass the whole attribute array to a
   * specialized object and have that do the special work.  That is the
   * family of HTMLPurifier_AttrTransform.
   *
   * An attribute transformation can be assigned to run before or after
   * HTMLPurifier_AttrDef validation.  See HTMLPurifier_HTMLDefinition for
   * more details.
   */
  
  abstract class HTMLPurifier_AttrTransform
  {
  
      /**
       * Abstract: makes changes to the attributes dependent on multiple values.
       *
       * @param array $attr Assoc array of attributes, usually from
       *              HTMLPurifier_Token_Tag::$attr
       * @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
       * @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object
       * @return array Processed attribute array.
       */
      abstract public function transform($attr, $config, $context);
  
      /**
       * Prepends CSS properties to the style attribute, creating the
       * attribute if it doesn't exist.
       * @param array &$attr Attribute array to process (passed by reference)
       * @param string $css CSS to prepend
       */
      public function prependCSS(&$attr, $css)
      {
          $attr['style'] = isset($attr['style']) ? $attr['style'] : '';
          $attr['style'] = $css . $attr['style'];
      }
  
      /**
       * Retrieves and removes an attribute
       * @param array &$attr Attribute array to process (passed by reference)
       * @param mixed $key Key of attribute to confiscate
       * @return mixed
       */
      public function confiscateAttr(&$attr, $key)
      {
          if (!isset($attr[$key])) {
              return null;
          }
          $value = $attr[$key];
          unset($attr[$key]);
          return $value;
      }
  }
  
  // vim: et sw=4 sts=4