Introduce a very rough skeleton to implement interactive shell

main.go

@@ -39,10 +39,6 @@ func parseArguments() {
 	settings["usePager"] = strconv.FormatBool(*usePagerPtr)
 }
 
-func interactiveShell() {
-
-}
-
 func showQueue() {
 	queue, err := fetchQueue()
 	if err != nil {

shell.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func interactiveShell() {
+	fmt.Println("Let's try an interactive shell!")
+	scanner := bufio.NewScanner(os.Stdin)
+	for {
+		fmt.Print("> ")
+		if !scanner.Scan() {
+			break
+		}
+		text := strings.Trim(scanner.Text(), " ")
+		textFields := strings.Fields(text)
+		if len(textFields) == 0 {
+			continue
+		}
+		cmd := textFields[0]
+		fmt.Printf("Read input: %q\n", textFields)
+
+		switch cmd {
+
+		default:
+			fmt.Printf("Unknown command '%s'\n", cmd)
+		}
+
+	}
+	fmt.Println("\nGoodbye!\n")
+}