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vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Enum.php 2.16 KB
abf1649b   andryeyev   Чистая установка ...
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  <?php
  
  // Enum = Enumerated
  /**
   * Validates a keyword against a list of valid values.
   * @warning The case-insensitive compare of this function uses PHP's
   *          built-in strtolower and ctype_lower functions, which may
   *          cause problems with international comparisons
   */
  class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
  {
  
      /**
       * Lookup table of valid values.
       * @type array
       * @todo Make protected
       */
      public $valid_values = array();
  
      /**
       * Bool indicating whether or not enumeration is case sensitive.
       * @note In general this is always case insensitive.
       */
      protected $case_sensitive = false; // values according to W3C spec
  
      /**
       * @param array $valid_values List of valid values
       * @param bool $case_sensitive Whether or not case sensitive
       */
      public function __construct($valid_values = array(), $case_sensitive = false)
      {
          $this->valid_values = array_flip($valid_values);
          $this->case_sensitive = $case_sensitive;
      }
  
      /**
       * @param string $string
       * @param HTMLPurifier_Config $config
       * @param HTMLPurifier_Context $context
       * @return bool|string
       */
      public function validate($string, $config, $context)
      {
          $string = trim($string);
          if (!$this->case_sensitive) {
              // we may want to do full case-insensitive libraries
              $string = ctype_lower($string) ? $string : strtolower($string);
          }
          $result = isset($this->valid_values[$string]);
  
          return $result ? $string : false;
      }
  
      /**
       * @param string $string In form of comma-delimited list of case-insensitive
       *      valid values. Example: "foo,bar,baz". Prepend "s:" to make
       *      case sensitive
       * @return HTMLPurifier_AttrDef_Enum
       */
      public function make($string)
      {
          if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
              $string = substr($string, 2);
              $sensitive = true;
          } else {
              $sensitive = false;
          }
          $values = explode(',', $string);
          return new HTMLPurifier_AttrDef_Enum($values, $sensitive);
      }
  }
  
  // vim: et sw=4 sts=4