File indexing completed on 2024-05-26 06:02:31

 <?php
 
 /**
  * Validates a Percentage as defined by the CSS spec.
  */
 class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
 {
 
     /**
      * Instance to defer number validation to.
      * @type HTMLPurifier_AttrDef_CSS_Number
      */
     protected $number_def;
 
     /**
      * @param bool $non_negative Whether to forbid negative values
      */
     public function __construct($non_negative = false)
     {
         $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
     }
 
     /**
      * @param string $string
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return bool|string
      */
     public function validate($string, $config, $context)
     {
         $string = $this->parseCDATA($string);
 
         if ($string === '') {
             return false;
         }
         $length = strlen($string);
         if ($length === 1) {
             return false;
         }
         if ($string[$length - 1] !== '%') {
             return false;
         }
 
         $number = substr($string, 0, $length - 1);
         $number = $this->number_def->validate($number, $config, $context);
 
         if ($number === false) {
             return false;
         }
         return "$number%";
     }
 }
 
 // vim: et sw=4 sts=4