Add terminal output helper

gilo.go

@@ -23,20 +23,26 @@ func isCtrl(char rune) bool {
 	return ord == 0x7f || ord < 0x20
 }
 
-func goRaw() (*term.State, error) {
-	state, err := term.MakeRaw(int(os.Stdin.Fd()))
-
-	return state, err
-}
-
-func main() {
-	// Go to proper raw mode
-	oldState, err := goRaw()
+// Put the terminal in
+func goRaw() *term.State {
+	oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
 	if err != nil {
 		panic(err)
 	}
 
-	// Restore canonical mode at exit
+	return oldState
+}
+
+// Print a formatted string to stdout, with CRLF line endings for proper terminal formatting
+func outLn(format string, a ...interface{}) {
+	formatted := fmt.Sprintf(format, a...)
+
+	fmt.Printf("%s\r\n", formatted)
+}
+
+func main() {
+	// Go to proper raw mode, but restore canonical mode at extit
+	oldState := goRaw()
 	defer term.Restore(int(os.Stdin.Fd()), oldState)
 
 	reader := bufio.NewReader(os.Stdin)
@@ -47,16 +53,15 @@ func main() {
 			panic(err)
 		}
 
+		// Ugliest syntax structure ever?
 		switch {
 		case char == 'q':
-			fmt.Println("bye!\r")
+			outLn("bye!")
 			return
 		case isCtrl(char):
-			fmt.Printf("%d\n", char)
+			outLn("%d", char)
 		default:
-			fmt.Printf("%d ('%c')\n", char, char)
-		}
-
-		_ = os.Stdout.Sync()
+			outLn("%d ('%c')", char, char)
+		}
 	}
 }