Method Ask

pkg/cmd/codespace/common.go:158–178

ask asks survey questions on the terminal, using standard options. It fails unless hasTTY, but ideally callers should avoid calling it in that case.

(qs []*survey.Question, response interface{})

// ask asks survey questions on the terminal, using standard options.
// It fails unless hasTTY, but ideally callers should avoid calling it in that case.
func (p *Prompter) Ask(qs []*survey.Question, response interface{}) error {
	if !hasTTY {
		return fmt.Errorf("no terminal")
	}
	err := survey.Ask(qs, response, survey.WithShowCursor(true))
	// The survey package temporarily clears the terminal's ISIG mode bit
	// (see tcsetattr(3)) so the QUIT button (Ctrl-C) is reported as
	// ASCII \x03 (ETX) instead of delivering SIGINT to the application.
	// So we have to serve ourselves the SIGINT.
	//
	// https://github.com/AlecAivazis/survey/#why-isnt-ctrl-c-working
	if err == terminal.InterruptErr {
		self, _ := os.FindProcess(os.Getpid())
		_ = self.Signal(os.Interrupt) // assumes POSIX

		// Suspend the goroutine, to avoid a race between
		// return from main and async delivery of INT signal.
		select {}
	}
	return err
}

var ErrTooManyArgs = errors.New("the command accepts no arguments")