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A Command Line interface for SlotMachine.java and SlotMachineMain.java
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| import java.util.Scanner; | |
| import java.util.regex.Pattern; | |
| import mediumjavafxmvcexample.SlotMachine.ROUTES; | |
| public class MainCLI { | |
| private final SlotMachine smOne; | |
| private final SlotMachine smTwo; | |
| private final Pattern commands = Pattern.compile( | |
| "^machine (1|2) select route (1|2)$" | |
| ); | |
| private final Pattern quitCommands = Pattern.compile( | |
| "^(quit|exit|kill|stop)$" | |
| ); | |
| public MainCLI(SlotMachine one, SlotMachine two) { | |
| smOne = one; | |
| smTwo = two; | |
| } | |
| public void runCommandLine() { | |
| System.out.println("Welcome. Type in a command with the following syntax:\n" | |
| + "\tmachine [1 2] select route [1 2]" | |
| + "\n type one of [quit exit kill stop] to exit" | |
| ); | |
| try (Scanner in = new Scanner(System.in)) { | |
| while (true) { | |
| // cleanse input | |
| String input = in | |
| .nextLine() | |
| .trim() | |
| .toLowerCase(); | |
| if (commands.matcher(input).matches()) { | |
| processCommand(input); | |
| dumpState(); | |
| } else if (quitCommands.matcher(input).matches()) { | |
| System.exit(0); | |
| } else { | |
| System.out.println("Command not recognize"); | |
| } | |
| } | |
| } | |
| } | |
| private void processCommand(String input) { | |
| // tokenize each word of the command | |
| String[] tokens = input.split(" "); | |
| // use reference to proper slot machine based of fof input token | |
| SlotMachine sm; | |
| if ("1".equals(tokens[1])) { | |
| sm = smOne; | |
| } else { | |
| sm = smTwo; | |
| } | |
| switch (tokens[2]) { | |
| case "select": | |
| // determine which route was requested | |
| ROUTES route; | |
| if ("1".equals(tokens[4])) { | |
| route = SlotMachine.ROUTES.ROUTE1; | |
| } else { | |
| route = SlotMachine.ROUTES.ROUTE2; | |
| } | |
| sm.setSelectedRoute(route); | |
| break; | |
| default: | |
| System.out.println("Problem processing command. Try again"); | |
| } | |
| } | |
| private void dumpState() { | |
| String msg = "Current State: \n" | |
| + "machine 1:\t" + smOne.getSelectedRoute() | |
| + "\nmachine 2:\t" + smTwo.getSelectedRoute(); | |
| System.out.println(msg); | |
| } | |
| } |
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