interactive mode added to vm-cli example

toggle, get and set refactored into separate functions

flag vars moved from global  scope

-i flag added to README

examples/vm-cli/README.md

@@ -13,6 +13,7 @@ Toggle with `!` prefix, get by excluding `=` and set by including `=`. Mix and m
 You may pass the following optional flags:
 
 -   -v: (-verbose) to toggle console output.
+-   -i: (-interactive) to toggle interactive mode.
 -   -k: (-kind) to set the kind of Voicemeeter. Defaults to banana.
 -   -d: (-delay) to set a delay on the getters. Defaults to 20ms.
 

examples/vm-cli/main.go

@@ -1,27 +1,32 @@
 package main
 
 import (
+	"bufio"
 	"flag"
 	"fmt"
 	"log"
+	"os"
 	"strings"
 
 	"github.com/onyx-and-iris/voicemeeter"
 )
 
+func main() {
 	var (
 		kind        string
 		delay       int
 		verbose     bool
+		interactive bool
 	)
 
-func main() {
 	flag.StringVar(&kind, "kind", "banana", "kind of voicemeeter")
 	flag.StringVar(&kind, "k", "banana", "kind of voicemeeter (shorthand)")
 	flag.IntVar(&delay, "delay", 20, "delay between commands")
 	flag.IntVar(&delay, "d", 20, "delay between commands (shorthand)")
 	flag.BoolVar(&verbose, "verbose", false, "toggle console output")
 	flag.BoolVar(&verbose, "v", false, "toggle console output (shorthand)")
+	flag.BoolVar(&interactive, "interactive", false, "toggle interactive mode")
+	flag.BoolVar(&interactive, "i", false, "toggle interactive mode (shorthand)")
 	flag.Parse()
 
 	vm, err := vmConnect(kind, delay)
@@ -30,7 +35,7 @@ func main() {
 	}
 	defer vm.Logout()
 
-	err = runCommands(vm, verbose)
+	err = runCommands(vm, verbose, interactive)
 	if err != nil {
 		fmt.Println(err)
 	}
@@ -50,45 +55,97 @@ func vmConnect(kind string, delay int) (*voicemeeter.Remote, error) {
 	return vm, nil
 }
 
-func runCommands(vm *voicemeeter.Remote, verbose bool) error {
+func runCommands(vm *voicemeeter.Remote, verbose, interactive bool) error {
+	if interactive {
+		return interactiveMode(vm, verbose)
+	}
 	for _, arg := range flag.Args() {
-		if arg[0] == '!' {
-			val, err := vm.GetFloat(arg[1:])
+		err := parse(vm, arg, verbose)
 		if err != nil {
-				err = fmt.Errorf("unable to toggle %s", arg[1:])
 			return err
 		}
-			vm.SetFloat(arg[1:], 1-val)
-			if verbose {
-				fmt.Println("Toggling", arg[1:])
 	}
-		} else {
-			if strings.Contains(arg, "=") {
-				if verbose {
-					fmt.Println("Running command", arg)
+	return nil
 }
-				err := vm.SendText(arg)
+
+func interactiveMode(vm *voicemeeter.Remote, verbose bool) error {
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input := scanner.Text()
+		if input == "q" || input == "quit" || input == "" {
+			return nil
+		}
+		for _, cmd := range strings.Split(input, " ") {
+			err := parse(vm, cmd, verbose)
 			if err != nil {
-					err = fmt.Errorf("unable to set %s", arg)
 				return err
 			}
-			} else {
-				valF, err := vm.GetFloat(arg)
-				if err != nil {
-					valS, err := vm.GetString(arg)
-					if err != nil {
-						err = fmt.Errorf("unable to get %s", arg)
-						return err
-					}
-					if verbose {
-						fmt.Println("Value of", arg, "is:", valS)
-					}
-				} else {
-					if verbose {
-						fmt.Println("Value of", arg, "is:", valF)
-					}
-				}
-			}
+		}
+	}
+	return nil
+}
+
+func parse(vm *voicemeeter.Remote, cmd string, verbose bool) error {
+	if cmd[0] == '!' {
+		err := toggleCmd(vm, cmd[1:], verbose)
+		if err != nil {
+			return err
+		}
+	} else {
+		if strings.Contains(cmd, "=") {
+			err := setCmd(vm, cmd, verbose)
+			if err != nil {
+				return err
+			}
+		} else {
+			err := getCmd(vm, cmd, verbose)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func toggleCmd(vm *voicemeeter.Remote, cmd string, verbose bool) error {
+	val, err := vm.GetFloat(cmd)
+	if err != nil {
+		err = fmt.Errorf("unable to toggle %s", cmd)
+		return err
+	}
+	vm.SetFloat(cmd[1:], 1-val)
+	if verbose {
+		fmt.Println("Toggling", cmd)
+	}
+	return nil
+}
+
+func setCmd(vm *voicemeeter.Remote, cmd string, verbose bool) error {
+	if verbose {
+		fmt.Println("Running command", cmd)
+	}
+	err := vm.SendText(cmd)
+	if err != nil {
+		err = fmt.Errorf("unable to set %s", cmd)
+		return err
+	}
+	return nil
+}
+
+func getCmd(vm *voicemeeter.Remote, cmd string, verbose bool) error {
+	valF, err := vm.GetFloat(cmd)
+	if err != nil {
+		valS, err := vm.GetString(cmd)
+		if err != nil {
+			err = fmt.Errorf("unable to get %s", cmd)
+			return err
+		}
+		if verbose {
+			fmt.Println("Value of", cmd, "is:", valS)
+		}
+	} else {
+		if verbose {
+			fmt.Println("Value of", cmd, "is:", valF)
 		}
 	}
 	return nil