/**
*Copyright [2010-2011] [dennis zhuang(killme2008@gmail.com)]
*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 com.google.code.hs4j.network.hs.codec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.code.hs4j.Command;
import com.google.code.hs4j.network.buffer.IoBuffer;
import com.google.code.hs4j.network.core.Session;
import com.google.code.hs4j.network.core.CodecFactory.Decoder;
import com.google.code.hs4j.network.hs.HandlerSocketSession;
/**
* HandlerSocket protocol decoder
*
* @author dennis
*
*/
public class HandlerSocketDecoder implements Decoder {
public static final Logger log = LoggerFactory
.getLogger(HandlerSocketDecoder.class);
public HandlerSocketDecoder() {
super();
}
public Object decode(IoBuffer buffer, Session origSession) {
HandlerSocketSession session = (HandlerSocketSession) origSession;
if (session.getCurrentCommand() != null) {
return this.decode0(buffer, session);
} else {
session.takeCurrentCommand();
return this.decode0(buffer, session);
}
}
private Object decode0(IoBuffer buffer, HandlerSocketSession session) {
if (session.getCurrentCommand().decode(session, buffer)) {
final Command command = session.getCurrentCommand();
session.setCurrentCommand(null);
return command;
}
return null;
}
}