<?php

/**
 * Validates a color according to the HTML spec.
 */
class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
{
    /**
     * @param string $string
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool|string
     */
    public function validate($string, $config, $context)
    {
        static $colors = null;
        if ($colors === null) {
            $colors = $config->get('Core.ColorKeywords');
        }

        $string = trim($string);

        if (empty($string)) {
            return false;
        }
        $lower = strtolower($string);
        if (isset($colors[$lower])) {
            return $colors[$lower];
        }
        if ($string[0] === '#') {
            $hex = substr($string, 1);
        } else {
            $hex = $string;
        }

        $length = strlen($hex);
        if ($length !== 3 && $length !== 6) {
            return false;
        }
        if (!ctype_xdigit($hex)) {
            return false;
        }
        if ($length === 3) {
            $hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
        }
        return "#$hex";
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTQzMTIxNjczMzc3MDAwMSA0MjY0MzY1ODE1ODIzOTQzIDcxMTcxMDkyOTk3MjE2MTg=