Function ParseDataSize

framework/config/map.go:227–280

(s string)

}

func ParseDataSize(s string) (int, error) {
	if len(s) == 0 {
		return 0, errors.New("missing a number")
	}

	// ' ' terminates the number+suffix pair.
	s = s + " "

	var total int
	currentDigit := ""
	suffix := ""
	for _, ch := range s {
		if unicode.IsDigit(ch) {
			if suffix != "" {
				return 0, errors.New("unexpected digit after a suffix")
			}
			currentDigit += string(ch)
			continue
		}
		if ch != ' ' {
			suffix += string(ch)
			continue
		}

		num, err := strconv.Atoi(currentDigit)
		if err != nil {
			return 0, err
		}

		if num < 0 {
			return 0, errors.New("value must not be negative")
		}

		switch suffix {
		case "G":
			total += num * 1024 * 1024 * 1024
		case "M":
			total += num * 1024 * 1024
		case "K":
			total += num * 1024
		case "B", "b":
			total += num
		default:
			if num != 0 {
				return 0, errors.New("unknown unit suffix: " + suffix)
			}
		}

		suffix = ""
		currentDigit = ""
	}

	return total, nil
}

// DataSize maps configuration directive to a int variable, representing data size.
//