main argument parsing

src/main/java/com/uqac/rthoni/java_rmi/Main.java

@@ -1,17 +1,81 @@
 package com.uqac.rthoni.java_rmi;
 
-import com.uqac.rthoni.com.java_rmi.client.ClientTestClass;
-import com.uqac.rthoni.com.java_rmi.server.ServerTestClass;
+import java.io.PrintStream;
 
 /**
  * Created by robin on 9/15/16.
  */
 public class Main {
+    public static void usage(String name, boolean error)
+    {
+        PrintStream printStream = (error ? System.err : System.out);
+
+        printStream.println("Usage:");
+        printStream.println(String.format("%1s server port source_dir class_dir log_file", name));
+        printStream.println("\tPut the program in server mode");
+        printStream.println("\tport: the port to listen on [1-65535]");
+        printStream.println("\tsource_dir: the folder to search for java files");
+        printStream.println("\tclass_dir: the folder to build java files");
+        printStream.println("\tlog_file: the file to log events");
+        printStream.println(String.format("%1s client hostname port input_file output_file", name));
+        printStream.println("\tPut the program in client mode");
+        printStream.println("\thost: the remote server ip or hostname");
+        printStream.println("\tport: the port to connect on [1-65535]");
+        printStream.println("\tinput_file: the command file to use");
+        printStream.println("\toutput_file: the file to output command results");
+        printStream.println(String.format("%1s --help", name));
+        printStream.println(String.format("%1s -h", name));
+        printStream.println("\tPrint this help and exit");
+
+        if (error) {
+            System.exit(64);
+        }
+    }
+
+    private static int getPort(String name, String str) {
+        int port = 0;
+        try {
+            port = Integer.parseInt(str);
+        } catch (Exception e) {
+            usage(name, true);
+        }
+        if (port < 1 || port > 65535) {
+            usage(name, true);
+        }
+        return port;
+    }
+
     public static void main(String[] args)
     {
-        ClientTestClass t2;
-        ServerTestClass t3;
-        System.out.println("Hello World!");
+        String name = "java-rmi";
+        for (String arg : args) {
+            if (arg.equals("--help") || arg.equals("-h")) {
+                usage(name, false);
+            }
+        }
+        if (args.length != 5) {
+            usage(name, true);
+        }
+        String mode = args[0];
+        if (mode.equals("server")) {
+            int port = getPort(name, args[1]);
+            String sourceDir = args[2];
+            String classDir = args[3];
+            String logFile = args[4];
+
+            System.out.println("Hello World! server");
+        }
+        else if (mode.equals("client")) {
+            String host = args[1];
+            int port = getPort(name, args[2]);
+            String inputFile = args[3];
+            String outputFile = args[4];
+
+            System.out.println("Hello World! client");
+        }
+        else {
+            usage(name, true);
+        }
         System.exit(0);
     }
 }