Function ToBytes

bytes.go:88–122

ToBytes parses a string formatted by ByteSize as bytes. Note binary-prefixed and SI prefixed units both mean a base-2 units KB = K = KiB = 1024 MB = M = MiB = 1024 * K GB = G = GiB = 1024 * M TB = T = TiB = 1024 * G PB = P = PiB = 1024 * T EB = E = EiB = 1024 * P

(s string)

// PB = P = PiB = 1024 * T
// EB = E = EiB = 1024 * P
func ToBytes(s string) (uint64, error) {
	s = strings.TrimSpace(s)
	s = strings.ToUpper(s)

	i := strings.IndexFunc(s, unicode.IsLetter)

	if i == -1 {
		return 0, invalidByteQuantityError
	}

	bytesString, multiple := s[:i], s[i:]
	bytes, err := strconv.ParseFloat(bytesString, 64)
	if err != nil || bytes < 0 {
		return 0, invalidByteQuantityError
	}

	switch multiple {
	case "E", "EB", "EIB":
		return uint64(bytes * EXABYTE), nil
	case "P", "PB", "PIB":
		return uint64(bytes * PETABYTE), nil
	case "T", "TB", "TIB":
		return uint64(bytes * TERABYTE), nil
	case "G", "GB", "GIB":
		return uint64(bytes * GIGABYTE), nil
	case "M", "MB", "MIB":
		return uint64(bytes * MEGABYTE), nil
	case "K", "KB", "KIB":
		return uint64(bytes * KILOBYTE), nil
	case "B":
		return uint64(bytes), nil
	default:
		return 0, invalidByteQuantityError
	}
}