examples: improve hyprctl example

examples/hyprctl/main.go

@@ -51,36 +51,52 @@ func main() {
 
 	flag.Parse()
 
+	m := map[string]func(){
+		"activewindow": func() {
+			v := must1(c.ActiveWindow())
+			fmt.Printf("%s\n", mustMarshalIndent(v))
+		},
+		"activeworkspace": func() {
+			v := must1(c.ActiveWorkspace())
+			fmt.Printf("%s\n", mustMarshalIndent(v))
+		},
+		"dispatch": func() {
+			dispatchFS.Parse(os.Args[2:])
+			v := must1(c.Dispatch(dispatch...))
+			fmt.Printf("%s\n", v)
+		},
+		"kill": func() {
+			v := must1(c.Kill())
+			fmt.Printf("%s\n", v)
+		},
+		"reload": func() {
+			v := must1(c.Reload())
+			fmt.Printf("%s\n", v)
+		},
+		"setcursor": func() {
+			setcursorFS.Parse(os.Args[2:])
+			v := must1(c.SetCursor(*theme, *size))
+			fmt.Printf("%s\n", v)
+		},
+		"version": func() {
+			v := must1(c.Version())
+			fmt.Printf("%s\n", mustMarshalIndent(v))
+		},
+	}
+
 	if len(os.Args) < 2 {
-		fmt.Println("Expected subcommand.")
+		fmt.Println("Expected one of the following subcommands:")
+		for k := range m {
+			fmt.Printf("- %s\n", k)
+		}
 		os.Exit(1)
 	}
 
-	switch os.Args[1] {
-	case "activewindow":
-		v := must1(c.ActiveWindow())
-		fmt.Printf("%s\n", mustMarshalIndent(v))
-	case "activeworkspace":
-		v := must1(c.ActiveWorkspace())
-		fmt.Printf("%s\n", mustMarshalIndent(v))
-	case "dispatch":
-		dispatchFS.Parse(os.Args[2:])
-		v := must1(c.Dispatch(dispatch...))
-		fmt.Printf("%s\n", v)
-	case "kill":
-		v := must1(c.Kill())
-		fmt.Printf("%s\n", v)
-	case "reload":
-		v := must1(c.Reload())
-		fmt.Printf("%s\n", v)
-	case "setcursor":
-		setcursorFS.Parse(os.Args[2:])
-		v := must1(c.SetCursor(*theme, *size))
-		fmt.Printf("%s\n", v)
-	case "version":
-		v := must1(c.Version())
-		fmt.Printf("%s\n", mustMarshalIndent(v))
-	default:
-		fmt.Printf("[ERROR] Unknown command: %s\n", os.Args[1])
+	subcmd := os.Args[1]
+	if fn, ok := m[subcmd]; ok {
+		fn()
+	} else {
+		fmt.Printf("Unknown subcommand: %s\n", subcmd)
+		os.Exit(1)
 	}
 }