File indexing completed on 2024-12-22 05:36:18

 <?php
 
 /**
  * Validates an integer representation of pixels according to the HTML spec.
  */
 class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
 {
 
     /**
      * @type int
      */
     protected $max;
 
     /**
      * @param int $max
      */
     public function __construct($max = null)
     {
         $this->max = $max;
     }
 
     /**
      * @param string $string
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return bool|string
      */
     public function validate($string, $config, $context)
     {
         $string = trim($string);
         if ($string === '0') {
             return $string;
         }
         if ($string === '') {
             return false;
         }
         $length = strlen($string);
         if (substr($string, $length - 2) == 'px') {
             $string = substr($string, 0, $length - 2);
         }
         if (!is_numeric($string)) {
             return false;
         }
         $int = (int)$string;
 
         if ($int < 0) {
             return '0';
         }
 
         // upper-bound value, extremely high values can
         // crash operating systems, see <http://ha.ckers.org/imagecrash.html>
         // WARNING, above link WILL crash you if you're using Windows
 
         if ($this->max !== null && $int > $this->max) {
             return (string)$this->max;
         }
         return (string)$int;
     }
 
     /**
      * @param string $string
      * @return HTMLPurifier_AttrDef
      */
     public function make($string)
     {
         if ($string === '') {
             $max = null;
         } else {
             $max = (int)$string;
         }
         $class = get_class($this);
         return new $class($max);
     }
 }
 
 // vim: et sw=4 sts=4