public THOK.MCP.Message Parse(string msg)
{
THOK.MCP.Message message = null;
buffer += msg;
int headPos = buffer.IndexOf(headChar, 0);
if (headPos != -1)
{
int tailPos = buffer.IndexOf(tailChar, headPos);
if (tailPos != -1)
{
if (headPos + 1 < tailPos)
{
//当终止符前有两个起始符,则以第二个为准.
int tmp = buffer.IndexOf(this.headChar, (headPos + 1), (tailPos - headPos));
if (tmp >= 0)
{
headPos = headPos + tmp;
}
//提取位于开始和结束字符串中的数据信息
string scanData = buffer.Substring((headPos + 1), (tailPos - headPos - 1));
int pos = scanData.IndexOf(separator);
string command = "";
string barcode = "";
if (pos != -1)
{
command = scanData.Substring(0, pos).Trim();
barcode = scanData.Substring(pos + 1).Trim();
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters.Add("barcode", barcode);
message = new THOK.MCP.Message(true, msg, command, parameters);
}
else
{
message = new THOK.MCP.Message(msg);
}
//将读到的条码去除
buffer = buffer.Remove(0, (tailPos + 1));
//避免错读,只读取一码后清空buffer
buffer = "";
}
else
{
buffer = buffer.Substring(headPos);
}
}
else
{
message = new THOK.MCP.Message(msg);
}
}
else
{
message = new THOK.MCP.Message(msg);
}
return(message);
}
public THOK.MCP.Message Parse(string msg)
{
THOK.MCP.Message message = null;
buffer += msg;
int headPos = buffer.IndexOf(headChar, 0);
if (headPos != -1)
{
int tailPos = buffer.IndexOf(tailChar, headPos);
if (tailPos != -1)
{
if (headPos + 1 < tailPos)
{
//����ֹ��ǰ��������ʼ��,���Եڶ���Ϊ.
int tmp = buffer.IndexOf(this.headChar, (headPos + 1), (tailPos - headPos));
if (tmp >= 0)
{
headPos = headPos + tmp;
}
//��ȡλ�ڿ�ʼ�ͽ����ַ����е�������Ϣ
string scanData = buffer.Substring((headPos + 1), (tailPos - headPos - 1));
int pos = scanData.IndexOf(separator);
string command = "";
string barcode = "";
if (pos != -1)
{
command = scanData.Substring(0, pos).Trim();
barcode = scanData.Substring(pos + 1).Trim();
Dictionary<string, string> parameters = new Dictionary<string, string>();
parameters.Add("barcode", barcode);
message = new THOK.MCP.Message(true, msg, command, parameters);
}
else
{
message = new THOK.MCP.Message(msg);
}
//������������ȥ��
buffer = buffer.Remove(0, (tailPos + 1));
//������,ֻ��ȡһ������buffer
buffer = "";
}
else
{
buffer = buffer.Substring(headPos);
}
}
else
message = new THOK.MCP.Message(msg);
}
else
{
message = new THOK.MCP.Message(msg);
}
return message;
}
private void server_OnReceive(object sender, ReceiveEventArgs e)
{
Message message = null;
if (null != protocol)
message = protocol.Parse(e.Read());
else
{
message = new Message(e.Read());
}
string text = string.Format("recv: <--- {0}", e.Read());
WriteToLog(text);
if (message.Parsed)
DispatchState(message.Command, message.Parameters);
dtTime = DateTime.Now;
}
void Run()
{
resetEvent.WaitOne();
while (isConnected && serialPort.IsOpen)
{
while (isConnected && serialPort.IsOpen && serialPort.BytesToRead == 0)
{
resetEvent.WaitOne(100,false);
}
string msg = null;
if (isHex)
{
int bytes = serialPort.BytesToRead;
byte[] buffer = new byte[bytes];
serialPort.Read(buffer, 0, bytes);
msg = BitConverter.ToString(buffer);
}
else
{
msg = serialPort.ReadExisting();
}
Message message = null;
if (null != protocol)
{
message = protocol.Parse(msg);
}
else
{
message = new Message(msg);
}
if (message.Parsed)
{
DispatchState(message.Command, message.Parameters);
}
}
}