package util // #include import "C" import ( "os" "os/exec" "time" ) // Max returns the largest integer func Max(first int, second int) int { if first >= second { return first } return second } // Min returns the smallest integer func Min(first int, second int) int { if first <= second { return first } return second } // Min32 returns the smallest 32-bit integer func Min32(first int32, second int32) int32 { if first <= second { return first } return second } // Max32 returns the largest 32-bit integer func Max32(first int32, second int32) int32 { if first > second { return first } return second } // Constrain32 limits the given 32-bit integer with the upper and lower bounds func Constrain32(val int32, min int32, max int32) int32 { if val < min { return min } if val > max { return max } return val } // Constrain limits the given integer with the upper and lower bounds func Constrain(val int, min int, max int) int { if val < min { return min } if val > max { return max } return val } // DurWithin limits the given time.Duration with the upper and lower bounds func DurWithin( val time.Duration, min time.Duration, max time.Duration) time.Duration { if val < min { return min } if val > max { return max } return val } // IsTty returns true is stdin is a terminal func IsTty() bool { return int(C.isatty(C.int(os.Stdin.Fd()))) != 0 } // ExecCommand executes the given command with $SHELL func ExecCommand(command string) *exec.Cmd { shell := os.Getenv("SHELL") if len(shell) == 0 { shell = "sh" } return exec.Command(shell, "-c", command) }