4 * Validates a MultiLength as defined by the HTML spec.
6 * A multilength is either a integer (pixel count), a percentage, or
9 class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
12 public function validate($string, $config, $context) {
14 $string = trim($string);
15 if ($string === '') return false;
17 $parent_result = parent::validate($string, $config, $context);
18 if ($parent_result !== false) return $parent_result;
20 $length = strlen($string);
21 $last_char = $string[$length - 1];
23 if ($last_char !== '*') return false;
25 $int = substr($string, 0, $length - 1);
27 if ($int == '') return '*';
28 if (!is_numeric($int)) return false;
32 if ($int < 0) return false;
33 if ($int == 0) return '0';
34 if ($int == 1) return '*';
35 return ((string) $int) . '*';