Add Ask method

Author: Elbandi

actions.go

@@ -40,6 +40,11 @@ type Actions interface {
 	// ShowPagedReader shows a paged text that is scrollable, from a reader source.
 	// This leverages on "less" for unix and "more" for windows.
 	ShowPagedReader(r io.Reader) error
+	// Wait for an answer from user
+	// text is displayed before
+	Ask(text string) string
+	// AskErr is Ask but returns error as well
+	AskErr(text string) (string, error)
 	// MultiChoice presents options to the user.
 	// returns the index of the selection or -1 if nothing is
 	// selected.
@@ -133,6 +138,15 @@ func (s *shellActionsImpl) Printf(format string, val ...interface{}) {
 	fmt.Fprintf(s.writer, format, val...)
 }
 
+func (s *shellActionsImpl) Ask(text string) string {
+	line, _ := s.ask(text)
+	return line
+}
+
+func (s *shellActionsImpl) AskErr(text string) (string, error) {
+	return s.ask(text)
+}
+
 func (s *shellActionsImpl) MultiChoice(options []string, text string) int {
 	choice := s.multiChoice(options, text, nil, false)
 	return choice[0]

ishell.go

@@ -483,6 +483,22 @@ func toggle(selected []int, cur int) []int {
 	return append(selected, cur)
 }
 
+func (s *Shell) ask(text string) (string, error) {
+	conf := s.reader.scanner.Config.Clone()
+
+	conf.DisableAutoSaveHistory = true
+
+	s.ShowPrompt(false)
+	defer s.ShowPrompt(true)
+	oldconf := s.reader.scanner.SetConfig(conf)
+
+	s.Print(text + " ")
+	answer, err := s.ReadLineErr()
+
+	s.reader.scanner.SetConfig(oldconf)
+	return answer, err
+}
+
 func (s *Shell) multiChoice(options []string, text string, init []int, multiResults bool) []int {
 	s.multiChoiceActive = true
 	defer func() { s.multiChoiceActive = false }()