/// <summary>
/// 解析消息数组至消息对象列表
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
/// <returns>消息对象列表</returns>
private List <MessageBase> UnpackMessage(byte[] buf, int offset)
{
int len = buf.Length;
List <MessageBase> tMsgList = new List <MessageBase>();
while (true)
{
if (DataConversion.ByteToNum <Int16>(buf, offset, false) == -1)
{
offset += 2;
if (DataConversion.ByteToNum <Int16>(buf, offset, false) == -1)
{
offset += 2;
packetBuf = (byte[])buf.Take(offset).ToArray();
break;
}
else
{
MessageBase message = MessageBase.MessageCreate(buf, ref offset);
tMsgList.Add(message);
}
}
if (offset >= (packetMaxLength - 10))
{
throw new NotImplementedException();
}
}
if (tMsgList.Count() <= 0)
{
throw new NotImplementedException();
}
return(tMsgList);
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
public CommsErr(byte[] buf, int offset) : base(messageId)
{
base.msgBuf = new byte[len];
Array.Copy(buf, 0, base.msgBuf, 0, len);
offset += 2;
offset += DataConversion.ByteToNum(buf, offset, ref error, false);
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
public NodeAva(byte[] buf, int offset) : base(messageId)
{
base.msgBuf = new byte[len];
Array.Copy(buf, 0, base.msgBuf, 0, len);
offset += 2;
offset += DataConversion.ByteToNum(buf, offset, ref nodeId, false);
}
private void Pack()
{
messageBuf = DataConversion.NumToByte(msgId, false);
messageBuf = DataConversion.NumToByte(nodeId, messageBuf, false);
messageBuf = DataConversion.NumToByte(cartSeq, messageBuf, false);
messageBuf = DataConversion.NumToByte(priority, messageBuf, false);
messageBuf = DataConversion.NumToByte(laneId, messageBuf, false);
base.msgBuf = messageBuf;
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
public DivertCmd(byte[] buf, int offset) : base(messageId)
{
offset += 2;
offset += DataConversion.ByteToNum(buf, offset, ref nodeId, false);
offset += DataConversion.ByteToNum(buf, offset, ref cartSeq, false);
offset += DataConversion.ByteToNum(buf, offset, ref priority, false);
offset += DataConversion.ByteToNum(buf, offset, ref laneId, false);
Pack();
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
public DivertReq(byte[] buf, int offset) : base(messageId)
{
base.msgBuf = new byte[len];
Array.Copy(buf, 0, base.msgBuf, 0, len);
offset += 2;
offset += DataConversion.ByteToNum(buf, offset, ref nodeId, false);
offset += DataConversion.ByteToNum(buf, offset, ref cartSeq, false);
offset += DataConversion.ByteToNum(buf, offset, ref attribute, false);
codeStr = Encoding.ASCII.GetString(buf, offset, codeStrLen).Trim();
}
/// <summary>
/// 打包报文对象至报文数组
/// </summary>
private void pack()
{
packetBuf = DataConversion.NumToByte(cycleNum, false);
packetBuf = DataConversion.NumToByte(senderId, packetBuf, false);
packetBuf = DataConversion.NumToByte(receiverId, packetBuf, false);
packetBuf = DataConversion.NumToByte(ack, packetBuf, false);
packetBuf = DataConversion.NumToByte(transportError, packetBuf, false);
packetBuf = packetBuf.Concat(PackMessage(messageList)).ToArray();
int len = 240 - packetBuf.Length;
byte[] padding = Enumerable.Repeat((byte)0xff, len).ToArray();
packetBuf = packetBuf.Concat(padding).ToArray();
}
/// <summary>
/// 解析报文数组至报文对象
/// </summary>
/// <param name="buf">报文数组</param>
public Packet(byte[] buf)
{
int offset = 0;
if (buf.Length > packetMaxLength)
{
throw new NotImplementedException();
}
packetBuf = (byte[])buf.Clone();
offset += DataConversion.ByteToNum(buf, offset, ref cycleNum, false);
offset += DataConversion.ByteToNum(buf, offset, ref senderId, false);
offset += DataConversion.ByteToNum(buf, offset, ref receiverId, false);
offset += DataConversion.ByteToNum(buf, offset, ref ack, false);
offset += DataConversion.ByteToNum(buf, offset, ref transportError, false);
messageList = UnpackMessage(buf, offset);
}
/// <summary>
/// 打包消息对象列表至消息数组
/// </summary>
/// <param name="tMessageList">消息对象数组</param>
/// <returns>消息数组</returns>
private byte[] PackMessage(List <MessageBase> tMessageList)
{
byte[] buf = null;
int len = tMessageList.Count;
if (len <= 0)
{
throw new NotImplementedException();
}
foreach (MessageBase messageBase in tMessageList)
{
buf = DataConversion.NumToByte((Int16)(-1), buf, false);
buf = buf.Concat(messageBase.msgBuf).ToArray();
}
return(buf);
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">偏移量引用</param>
/// <returns>消息对象</returns>
static public MessageBase MessageCreate(byte[] buf, ref int offset)
{
Int16 tMsgId = 0;
MessageBase messageBase;
DataConversion.ByteToNum(buf, offset, ref tMsgId, false);
switch (tMsgId)
{
case (Int16)MessageType.DivertReq:
messageBase = new DivertReq(buf, offset);
offset += DivertReq.len;
break;
case (Int16)MessageType.DivertRes:
messageBase = new DivertRes(buf, offset);
offset += DivertRes.len;
break;
case (Int16)MessageType.HeartBeat:
messageBase = new HeartBeat(buf, offset);
offset += HeartBeat.len;
break;
case (Int16)MessageType.NodeAva:
messageBase = new NodeAva(buf, offset);
offset += NodeAva.len;
break;
case (Int16)MessageType.CommsErr:
messageBase = new CommsErr(buf, offset);
offset += CommsErr.len;
break;
default:
throw new NotImplementedException();
}
return(messageBase);
}
private void Pack()
{
messageBuf = DataConversion.NumToByte(msgId, false);
messageBuf = DataConversion.NumToByte(period, messageBuf, false);
base.msgBuf = messageBuf;
}
/// <summary>
/// 解析消息数组至单个消息对象
/// </summary>
/// <param name="buf">消息数组</param>
/// <param name="offset">数组偏移量</param>
public HeartBeat(byte[] buf, int offset) : base(messageId)
{
offset += 2;
offset += DataConversion.ByteToNum(buf, offset, ref period, false);
Pack();
}