func parseCmd()

in main/main.go [93:107]

• 15 lines of code
• 3 McCabe index (conditional complexity)

func parseCmd(args []string) cmd {
	if len(os.Args) != 2 {
		printUsage(args)
		fmt.Println("Incorrect usage.")
		os.Exit(2)
	}
	op := os.Args[1]
	cmd, ok := cmds[op]
	if !ok {
		printUsage(args)
		fmt.Printf("Incorrect command: %q\n", op)
		os.Exit(2)
	}
	return cmd
}