UNKNOWN_LENGTH
if (slen == UNKNOWN_LENGTH)
search_token(token, UNKNOWN_LENGTH, ":") + 1);
search_token(token, UNKNOWN_LENGTH, ":") + 1);
search_token(token, UNKNOWN_LENGTH, ":") + 1);
search_token(token, UNKNOWN_LENGTH, ":") + 1);
class = search_token(token, UNKNOWN_LENGTH, ":") + 1;
search_token(token, UNKNOWN_LENGTH, ":") + 1);