/*

  * Copyright 2007 the original author or authors.

  * 

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  *      http://www.apache.org/licenses/LICENSE-2.0

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.mockftpserver.stub.command;

 import org.mockftpserver.core.command.Command;

 import org.mockftpserver.core.command.CommandHandler;

 import org.mockftpserver.core.command.InvocationRecord;

 import org.mockftpserver.core.command.ReplyCodes;

 import org.mockftpserver.core.session.Session;

 import org.mockftpserver.core.util.Assert;

 import java.util.StringTokenizer;

 /**

  * CommandHandler for the ALLO (Allocate) command. Send back a reply code of 200.

  * <p/>

  * Each invocation record stored by this CommandHandler includes the following data element key/values:

  * <ul>

  * <li>{@link #NUMBER_OF_BYTES_KEY} ("numberOfBytes") - the number of bytes submitted

  * on the invocation (the first command parameter)

  * <li>{@link #RECORD_SIZE_KEY} ("recordSize") - the record size optionally submitted

  * on the invocation (the second command parameter)

  * </ul>

  *

  * @author Chris Mair

  * @version $Revision: 194 $ - $Date: 2008-12-07 08:53:58 -0500 (Sun, 07 Dec 2008) $

  */

 public class AlloCommandHandler extends AbstractStubCommandHandler implements CommandHandler {

     public static final String NUMBER_OF_BYTES_KEY = "numberOfBytes";

     public static final String RECORD_SIZE_KEY = "recordSize";

     private static final String RECORD_SIZE_DELIMITER = " R ";

     /**

      * Constructor. Initialize the replyCode.

      */

     public AlloCommandHandler() {

         setReplyCode(ReplyCodes.ALLO_OK);

     }

     /**

      * @see org.mockftpserver.core.command.CommandHandler#handleCommand(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session)

      */

     public void handleCommand(Command command, Session session, InvocationRecord invocationRecord) {

         String parametersString = command.getRequiredParameter(0);

         if (parametersString.indexOf(RECORD_SIZE_DELIMITER) == -1) {

             invocationRecord.set(NUMBER_OF_BYTES_KEY, Integer.valueOf(parametersString));

         } else {

             // If the recordSize delimiter (" R ") is specified, then it must be followed by the recordSize.

             StringTokenizer tokenizer = new StringTokenizer(parametersString, RECORD_SIZE_DELIMITER);

             invocationRecord.set(NUMBER_OF_BYTES_KEY, Integer.valueOf(tokenizer.nextToken()));

             Assert.isTrue(tokenizer.hasMoreTokens(), "Missing record size: [" + parametersString + "]");

             invocationRecord.set(RECORD_SIZE_KEY, Integer.valueOf(tokenizer.nextToken()));

         }

         sendReply(session);

     }

 }