library/HTMLPurifier/AttrDef/CSS/Length.php

   1 <?php
   2
   3 /**
   4  * Represents a Length as defined by CSS.
   5  */
   6 class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
   7 {
   8
   9     protected $min, $max;
  10
  11     /**
  12      * @param HTMLPurifier_Length $max Minimum length, or null for no bound. String is also acceptable.
  13      * @param HTMLPurifier_Length $max Maximum length, or null for no bound. String is also acceptable.
  14      */
  15     public function __construct($min = null, $max = null) {
  16         $this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
  17         $this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
  18     }
  19
  20     public function validate($string, $config, $context) {
  21         $string = $this->parseCDATA($string);
  22
  23         // Optimizations
  24         if ($string === '') return false;
  25         if ($string === '0') return '0';
  26         if (strlen($string) === 1) return false;
  27
  28         $length = HTMLPurifier_Length::make($string);
  29         if (!$length->isValid()) return false;
  30
  31         if ($this->min) {
  32             $c = $length->compareTo($this->min);
  33             if ($c === false) return false;
  34             if ($c < 0) return false;
  35         }
  36         if ($this->max) {
  37             $c = $length->compareTo($this->max);
  38             if ($c === false) return false;
  39             if ($c > 0) return false;
  40         }
  41
  42         return $length->toString();
  43     }
  44
  45 }
  46
  47 // vim: et sw=4 sts=4