refactor, add example for default input

Author: abiosoft

actions.go

@@ -88,9 +88,9 @@ func (s *shellActionsImpl) ReadLineErr() (string, error) {
 }
 
 func (s *shellActionsImpl) ReadLineWithDefault(defaultValue string) string {
-	s.reader.defaultValue = defaultValue
+	s.reader.defaultInput = defaultValue
 	line, _ := s.readLine()
-	s.reader.defaultValue = ""
+	s.reader.defaultInput = ""
 	return line
 }
 

example/main.go

@@ -57,6 +57,30 @@ func main() {
 		},
 	})
 
+	// handle "default".
+	shell.AddCmd(&ishell.Cmd{
+		Name: "default",
+		Help: "readline with default input",
+		Func: func(c *ishell.Context) {
+			c.ShowPrompt(false)
+			defer c.ShowPrompt(true)
+
+			defaultInput := "default input, you can edit this"
+			if len(c.Args) > 0 {
+				defaultInput = strings.Join(c.Args, " ")
+			}
+
+			c.Print("input: ")
+			read := c.ReadLineWithDefault(defaultInput)
+
+			if read == defaultInput {
+				c.Println("you left the default input intact")
+			} else {
+				c.Printf("you modified input to '%s'", read)
+				c.Println()
+			}
+		},
+	})
 	// read multiple lines with "multi" command
 	shell.AddCmd(&ishell.Cmd{
 		Name: "multi",

reader.go

@@ -24,8 +24,8 @@ type (
 		multiPrompt  string
 		showPrompt   bool
 		completer    readline.AutoCompleter
+		defaultInput string
 		sync.Mutex
-		defaultValue string
 	}
 )
 
@@ -88,7 +88,7 @@ func (s *shellReader) readLine(consumer chan lineString) {
 	// use printed statement as prompt
 	s.scanner.SetPrompt(prompt)
 
-	line, err := s.scanner.ReadlineWithDefault(s.defaultValue)
+	line, err := s.scanner.ReadlineWithDefault(s.defaultInput)
 
 	// reset prompt
 	s.scanner.SetPrompt(shellPrompt)