+// like Amount but tigher in space
+func FormatCounter(counter int, width int) string {
+ if counter == 0 {
+ pattern := "%" + fmt.Sprintf("%d", width) + "s"
+ return fmt.Sprintf(pattern, " ")
+ } else {
+ pattern := "%" + fmt.Sprintf("%d", width) + "d"
+ return fmt.Sprintf(pattern, counter)
+ }
+}
+