PHPExiftool\RDFParser::normalize PHP Метод

    protected function normalize($tagname)
    {
        static $namespacesRedirection = array('CIFF' => array('Canon', 'CanonRaw'));
        foreach ($namespacesRedirection as $from => $to) {
            if (strpos($tagname, $from . ':') !== 0) {
                continue;
            }
            foreach ((array) $to as $substit) {
                $supposedTagname = str_replace($from . ':', $substit . ':', $tagname);
                if (TagFactory::hasFromRDFTagname($supposedTagname)) {
                    return $supposedTagname;
                }
            }
        }
        return $tagname;
    }