[Summary view] [Print] [Text view]

   1  <?php
   2  
   3  /**
   4   * Validates the HTML type length (not to be confused with CSS's length).
   5   *
   6   * This accepts integer pixels or percentages as lengths for certain
   7   * HTML attributes.
   8   */
   9  
  10  class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
  11  {
  12  
  13      public function validate($string, $config, $context) {
  14  
  15          $string = trim($string);
  16          if ($string === '') return false;
  17  
  18          $parent_result = parent::validate($string, $config, $context);
  19          if ($parent_result !== false) return $parent_result;
  20  
  21          $length = strlen($string);
  22          $last_char = $string[$length - 1];
  23  
  24          if ($last_char !== '%') return false;
  25  
  26          $points = substr($string, 0, $length - 1);
  27  
  28          if (!is_numeric($points)) return false;
  29  
  30          $points = (int) $points;
  31  
  32          if ($points < 0) return '0%';
  33          if ($points > 100) return '100%';
  34  
  35          return ((string) $points) . '%';
  36  
  37      }
  38  
  39  }
  40  
  41  // vim: et sw=4 sts=4