Function ByteSize

bytes.go:37–69

ByteSize returns a human-readable byte string of the form 10M, 12.5K, and so forth. The following units are available: E: Exabyte P: Petabyte T: Terabyte G: Gigabyte M: Megabyte K: Kilobyte B: Byte The unit that results in the smallest number greater than or equal to 1 is always chosen.

(bytes uint64)

//
// The unit that results in the smallest number greater than or equal to 1 is always chosen.
func ByteSize(bytes uint64) string {
	unit := ""
	value := float64(bytes)

	switch {
	case bytes >= EXABYTE:
		unit = "E"
		value = value / EXABYTE
	case bytes >= PETABYTE:
		unit = "P"
		value = value / PETABYTE
	case bytes >= TERABYTE:
		unit = "T"
		value = value / TERABYTE
	case bytes >= GIGABYTE:
		unit = "G"
		value = value / GIGABYTE
	case bytes >= MEGABYTE:
		unit = "M"
		value = value / MEGABYTE
	case bytes >= KILOBYTE:
		unit = "K"
		value = value / KILOBYTE
	case bytes >= BYTE:
		unit = "B"
	case bytes == 0:
		return "0B"
	}

	result := strconv.FormatFloat(value, 'f', 1, 64)
	result = strings.TrimSuffix(result, ".0")
	return result + unit
}

// ToMegabytes parses a string formatted by ByteSize as megabytes.
func ToMegabytes(s string) (uint64, error) {