Method AskString

shared/ask/ask.go:91–114

AskString asks the user to enter a string, which optionally conforms to a validation function.

(question string, defaultAnswer string, validate func(string) error)

// AskString asks the user to enter a string, which optionally
// conforms to a validation function.
func (a *Asker) AskString(question string, defaultAnswer string, validate func(string) error) (string, error) {
	for {
		answer, err := a.askQuestion(question, defaultAnswer)
		if err != nil {
			return "", err
		}

		if validate != nil {
			err := validate(answer)
			if err != nil {
				fmt.Fprintf(os.Stderr, "Invalid input: %s\n\n", err)
				continue
			}

			return answer, err
		}

		if len(answer) != 0 {
			return answer, err
		}

		invalidInput()
	}
}

// AskPassword asks the user to enter a password.
func (a *Asker) AskPassword(question string) string {