Method MarshalText

duration.go:16–46

MarshalText implements the encoding.TextMarshaler interface.

()

// MarshalText implements the encoding.TextMarshaler interface.
func (d Duration) MarshalText() ([]byte, error) {
	if d == 0 {
		return nil, nil
	}

	out := "PT"
	if d < 0 {
		d *= -1
		out = "-" + out
	}

	h := time.Duration(d) / time.Hour
	m := time.Duration(d) % time.Hour / time.Minute
	s := time.Duration(d) % time.Minute / time.Second
	ns := time.Duration(d) % time.Second
	if h > 0 {
		out += fmt.Sprintf("%dH", h)
	}
	if m > 0 {
		out += fmt.Sprintf("%dM", m)
	}
	if s > 0 || ns > 0 {
		out += fmt.Sprintf("%d", s)
		if ns > 0 {
			out += strings.TrimRight(fmt.Sprintf(".%09d", ns), "0")
		}
		out += "S"
	}

	return []byte(out), nil
}

const (
	day   = 24 * time.Hour