Пример #1
0
func idnaASCII(v string) (string, error) {
	if isASCII(v) {
		return v, nil
	}
	// The idna package doesn't do everything from
	// https://tools.ietf.org/html/rfc5895 so we do it here.
	// TODO(bradfitz): should the idna package do this instead?
	v = strings.ToLower(v)
	v = width.Fold.String(v)
	v = norm.NFC.String(v)
	return idna.ToASCII(v)
}
Пример #2
0
// PunycodeHostPort returns the IDNA Punycode version
// of the provided "host" or "host:port" string.
func PunycodeHostPort(v string) (string, error) {
	if isASCII(v) {
		return v, nil
	}

	host, port, err := net.SplitHostPort(v)
	if err != nil {
		// The input 'v' argument was just a "host" argument,
		// without a port. This error should not be returned
		// to the caller.
		host = v
		port = ""
	}
	host, err = idna.ToASCII(host)
	if err != nil {
		// Non-UTF-8? Not representable in Punycode, in any
		// case.
		return "", err
	}
	if port == "" {
		return host, nil
	}
	return net.JoinHostPort(host, port), nil
}