/plugins/vjCommentPlugin/lib/tools/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Color.php

 1<?php
 2
 3/**
 4 * Validates a color according to the HTML spec.
 5 */
 6class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
 7{
 8
 9    public function validate($string, $config, $context) {
10
11        static $colors = null;
12        if ($colors === null) $colors = $config->get('Core.ColorKeywords');
13
14        $string = trim($string);
15
16        if (empty($string)) return false;
17        if (isset($colors[$string])) return $colors[$string];
18        if ($string[0] === '#') $hex = substr($string, 1);
19        else $hex = $string;
20
21        $length = strlen($hex);
22        if ($length !== 3 && $length !== 6) return false;
23        if (!ctype_xdigit($hex)) return false;
24        if ($length === 3) $hex = $hex[0].$hex[0].$hex[1].$hex[1].$hex[2].$hex[2];
25
26        return "#$hex";
27
28    }
29
30}
31
32// vim: et sw=4 sts=4