package com.zy.common.HslCommunication.Core.IMessage;
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import com.zy.common.HslCommunication.Utilities;
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public class MelsecQnA3EAsciiMessage implements INetMessage
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{
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/**
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* 消息头的指令长度
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*/
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public int ProtocolHeadBytesLength(){
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return 18;
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}
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/**
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* 从当前的头子节文件中提取出接下来需要接收的数据长度
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* @return 返回接下来的数据内容长度
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*/
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public int GetContentLengthByHeadBytes(){
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if(HeadBytes == null) return 0;
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byte[] buffer = new byte[4];
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buffer[0] = HeadBytes[14];
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buffer[1] = HeadBytes[15];
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buffer[2] = HeadBytes[16];
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buffer[3] = HeadBytes[17];
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return Integer.parseInt(Utilities.getString(buffer,"ascii"),16);
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}
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/**
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* 检查头子节的合法性
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* @param token 特殊的令牌，有些特殊消息的验证
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* @return 是否合法的验证
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*/
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public boolean CheckHeadBytesLegal(byte[] token)
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{
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if(HeadBytes == null) return false;
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if(HeadBytes[0] == (byte)'D' && HeadBytes[1] == (byte)'0' && HeadBytes[2] == (byte)'0' && HeadBytes[3] == (byte)'0'){
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return true;
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}
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else {
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return false;
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}
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}
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/**
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* 获取头子节里的消息标识
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* @return
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*/
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public int GetHeadBytesIdentity(){
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return 0;
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}
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/**
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* 获取消息头字节
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*
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* @return
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*/
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@Override
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public byte[] getHeadBytes() {
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return HeadBytes;
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}
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/**
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* 获取消息内容字节
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*
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* @return
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*/
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@Override
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public byte[] getContentBytes() {
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return ContentBytes;
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}
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/**
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* 获取发送的消息
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*
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* @return
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*/
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@Override
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public byte[] getSendBytes() {
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return SendBytes;
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}
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/**
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* 设置消息头子节
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* @param headBytes 字节数据
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*/
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public void setHeadBytes(byte[] headBytes){
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HeadBytes = headBytes;
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}
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/**
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* 设置消息内容字节
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* @param contentBytes 内容字节
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*/
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public void setContentBytes(byte[] contentBytes){
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ContentBytes = contentBytes;
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}
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/**
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* 设置发送的字节信息
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* @param sendBytes 发送的字节信息
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*/
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public void setSendBytes(byte[] sendBytes){
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SendBytes = sendBytes;
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}
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private byte[] HeadBytes = null;
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private byte[] ContentBytes = null;
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private byte[] SendBytes = null;
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}
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