33      * @param string $string String to be validated and cleaned.
37     abstract public function validate($string, $config, $context);  argument
60     public function parseCDATA($string)  argument
62         $string = trim($string);
63         $string = str_replace(array("\n", "\t", "\r"), ' ', $string);
64         return $string;
69      * @param string $string String construction info
72     public function make($string)  argument
84      * @param string $string a CSS colour definition
87     protected function mungeRgb($string)  argument
91         if (preg_match('/(rgba|hsla)\(/', $string)) {
92 …  return preg_replace('/(rgba|hsla)\('.$p.','.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8,\11)', $string);
95         return preg_replace('/(rgb|hsl)\('.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8)', $string);
102     protected function expandCSSEscape($string)  argument
106         for ($i = 0, $c = strlen($string); $i < $c; $i++) {
107             if ($string[$i] === '\\') {
113                 if (ctype_xdigit($string[$i])) {
114                     $code = $string[$i];
116                         if (!ctype_xdigit($string[$i])) {
119                         $code .= $string[$i];
129                     if ($i < $c && trim($string[$i]) !== '') {
134                 if ($string[$i] === "\n") {
138             $ret .= $string[$i];