/// <summary>
/// Create a new command object
/// </summary>
/// <param name="command"></param>
/// <param name="data"></param>
public TpiCommand(RequestCommand command, String data = null)
{
Command = command;
CommandData = data;
if (data != null)
{
TPIData = CheckSumHelper.AppendCheckSumAndEndOfRequest(command.GetStringValue() + data);
}
else
{
TPIData = CheckSumHelper.AppendCheckSumAndEndOfRequest(command.GetStringValue());
}
}
private void Parse(string data)
{
if (data == null)
{
data = "";
}
data = data.Replace("\0", "");
//check if it's prefixed with date:
if (data.Length > 9)
{
int number;
Int32.TryParse(data.Substring(0, 1), out number);
if (number > -1)
{
//prefixed with date.
var date = data.Substring(0, 8);
DateTime tmp;
if (DateTime.TryParse(date, out tmp))
{
data = data.Substring(9); // remove date + space
Date = tmp;
}
else
{
Date = DateTime.Now;
}
}
else
{
Date = DateTime.Now;
}
}
else
{
Date = DateTime.Now;
}
//get ResponseEnum.
ResponseCommand command;
Enum.TryParse(data.Substring(0, CommandSize), out command);
var numBytes = command.GetNumberOfBytes();
var payload = ""; // can be 0-length
if (numBytes > 0)
{
payload = data.Substring(CommandSize, numBytes);
}
var checksum = data.Substring(CommandSize + numBytes, ChecksumSize);
if (!CheckSumHelper.VerifyChecksum(command, payload, checksum))
{
throw new Exception("Wrong checksum in response detected.");
}
Command = command;
Data = payload;
}