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  1. /*
  2.  * Copyright (c) 2010, Manuel Mausz. All rights reserved.
  3.  *
  4.  * Redistribution and use in source and binary forms, with or without
  5.  * modification, are permitted provided that the following conditions
  6.  * are met:
  7.  *
  8.  *   - Redistributions of source code must retain the above copyright
  9.  *     notice, this list of conditions and the following disclaimer.
  10.  *
  11.  *   - Redistributions in binary form must reproduce the above copyright
  12.  *     notice, this list of conditions and the following disclaimer in the
  13.  *     documentation and/or other materials provided with the distribution.
  14.  *
  15.  *   - The names of the authors may not be used to endorse or promote products
  16.  *     derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  19.  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  20.  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21.  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  22.  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  23.  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  24.  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  25.  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  26.  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27.  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28.  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. import java.io.ObjectInputStream;
  32. import java.io.IOException;
  33.  
  34. /*
  35.  * Allows you to easily setup a application which receive commands via network
  36.  * Register commands in ctor and invoke run() afterwards
  37.  * Reads from ObjectInputStream. Commands must be send by ObjectOutputstream
  38.  * via writeUTF
  39.  *
  40.  * @author Manuel Mausz (0728348)
  41.  */
  42. public class CommandNetwork
  43. {
  44.   private boolean stop = false;
  45.   private boolean onecommand = false;
  46.   public CommandHandler cmdHandler;
  47.  
  48.   /*--------------------------------------------------------------------------*/
  49.  
  50.   public CommandNetwork()
  51.   {
  52.     cmdHandler = new CommandHandler();
  53.   }
  54.  
  55.   /*--------------------------------------------------------------------------*/
  56.  
  57.   public void setOneCommandMode(boolean mode)
  58.   {
  59.     onecommand = mode;
  60.   }
  61.  
  62.   /*--------------------------------------------------------------------------*/
  63.  
  64.   public void stop()
  65.   {
  66.     stop = true;
  67.   }
  68.  
  69.   /*--------------------------------------------------------------------------*/
  70.  
  71.   public void printPrompt()
  72.   {}
  73.  
  74.   /*--------------------------------------------------------------------------*/
  75.  
  76.   public void run(ObjectInputStream in)
  77.     throws IOException
  78.   {
  79.     String input;
  80.  
  81.     printPrompt();
  82.     while(!stop && (input = in.readUTF()) != null)
  83.     {
  84.       if (input.length() > 0)
  85.       {
  86.         String[] pieces = input.split("\\s+");
  87.         String[] args = new String[pieces.length - 1];
  88.         System.arraycopy(pieces, 1, args, 0, pieces.length - 1);
  89.         cmdHandler.call(pieces[0], args);
  90.       }
  91.  
  92.       if (onecommand)
  93.         break;
  94.  
  95.       if (!stop)
  96.         printPrompt();
  97.     }
  98.   }
  99. }
  100.