File indexing completed on 2024-06-16 05:29:43

0001 <?php
0002 
0003 /**
0004  * Validates a MultiLength as defined by the HTML spec.
0005  *
0006  * A multilength is either a integer (pixel count), a percentage, or
0007  * a relative number.
0008  */
0009 class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
0010 {
0011 
0012     /**
0013      * @param string $string
0014      * @param HTMLPurifier_Config $config
0015      * @param HTMLPurifier_Context $context
0016      * @return bool|string
0017      */
0018     public function validate($string, $config, $context)
0019     {
0020         $string = trim($string);
0021         if ($string === '') {
0022             return false;
0023         }
0024 
0025         $parent_result = parent::validate($string, $config, $context);
0026         if ($parent_result !== false) {
0027             return $parent_result;
0028         }
0029 
0030         $length = strlen($string);
0031         $last_char = $string[$length - 1];
0032 
0033         if ($last_char !== '*') {
0034             return false;
0035         }
0036 
0037         $int = substr($string, 0, $length - 1);
0038 
0039         if ($int == '') {
0040             return '*';
0041         }
0042         if (!is_numeric($int)) {
0043             return false;
0044         }
0045 
0046         $int = (int)$int;
0047         if ($int < 0) {
0048             return false;
0049         }
0050         if ($int == 0) {
0051             return '0';
0052         }
0053         if ($int == 1) {
0054             return '*';
0055         }
0056         return ((string)$int) . '*';
0057     }
0058 }
0059 
0060 // vim: et sw=4 sts=4