File indexing completed on 2024-05-12 06:02:04

 <?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