Function YesNoPrompt

tools/osutils/cmd.go:40–65

YesNoPrompt performs a console prompt that asks the user for Yes/No answer. If the user just press Enter (aka. doesn't type anything) it returns the fallback value.

(message string, fallback bool)

//
// If the user just press Enter (aka. doesn't type anything) it returns the fallback value.
func YesNoPrompt(message string, fallback bool) bool {
	options := "Y/n"
	if !fallback {
		options = "y/N"
	}

	r := bufio.NewReader(os.Stdin)

	var s string
	for {
		fmt.Fprintf(os.Stderr, "%s (%s) ", message, options)

		s, _ = r.ReadString('\n')

		s = strings.ToLower(strings.TrimSpace(s))

		switch s {
		case "":
			return fallback
		case "y", "yes":
			return true
		case "n", "no":
			return false
		}
	}
}