if k.ItemCount > 1 {
		keyStr = fmt.Sprintf("%d:%s", k.ItemCount, k.Name)
	}
	return keyStr + k.Extension + func() string {
		if k.Compress {
			return compressExt
		}
		return ""
	}()
}

func getItemCount(k string) (count int, err error) {
	count = 1
	v := strings.Split(k, ":")
	if len(v) == 2 {
		return strconv.Atoi(v[0])
	}
	return
}

func parseKey(k string) (key Key) {
	key.Name = k