func pretendElapsedCmd(r ring.Ring, b *ring.Builder, args []string) error {
if b == nil {
return fmt.Errorf("only valid for builder files")
}
if len(args) != 1 {
return fmt.Errorf("syntax: <minutes>")
}
m, err := strconv.Atoi(args[0])
if err != nil {
return fmt.Errorf("could not parse %#v: %s", args[0], err.Error())
}
if m < 0 {
return fmt.Errorf("cannot pretend to go backwards in time")
}
if m > math.MaxUint16 {
return fmt.Errorf("cannot pretend to elapse more than %d minutes", math.MaxUint16)
}
b.PretendElapsed(uint16(m))
return nil
}
