protected (string, DeviceStatus) Request(byte command, string?data = null)
{
lock (frameSyncLock)
{
if (DeadLine < DateTime.Now)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E999", "User timeout occured while sending the request");
return(string.Empty, deviceStatus);
}
try
{
return(ParseResponse(RawRequest(command, data == null ? null : PrinterEncoding.GetBytes(data))));
}
catch (StandardizedStatusMessageException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError(e.Code, e.Message);
return(string.Empty, deviceStatus);
}
catch (InvalidResponseException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E107", e.Message);
return(string.Empty, deviceStatus);
}
catch (Exception e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E101", e.Message);
return(string.Empty, deviceStatus);
}
}
}
protected (string, DeviceStatus) Request(string?data = null)
{
lock (frameSyncLock)
{
try
{
System.Diagnostics.Trace.WriteLine($"Request: '{data}'");
var response = ParseResponse(RawRequest(data == null ? null : PrinterEncoding.GetBytes(data)));
if (data == "00")
{
return(response, new DeviceStatus());
}
var rawStatus = ParseRawResponse(RawRequest(data == null ? null : PrinterEncoding.GetBytes("F80C")));
return(response, ParseStatus(rawStatus));
}
catch (InvalidResponseException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E107", e.Message);
return(string.Empty, deviceStatus);
}
catch (Exception e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E101", e.Message);
return(string.Empty, deviceStatus);
}
}
}
protected (string, DeviceStatus) Request(byte command, string?data = null)
{
lock (frameSyncLock)
{
try
{
return(ParseResponse(RawRequest(command, data == null ? null : PrinterEncoding.GetBytes(data))));
}
catch (StandardizedStatusMessageException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError(e.Code, e.Message);
return(string.Empty, deviceStatus);
}
catch (InvalidResponseException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E107", e.Message);
return(string.Empty, deviceStatus);
}
catch (Exception e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E101", e.Message);
return(string.Empty, deviceStatus);
}
}
}
protected (string, DeviceStatus) Request(string?data = null)
{
lock (frameSyncLock)
{
if (DeadLine < DateTime.Now)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E999", "User timeout occured while sending the request");
return(string.Empty, deviceStatus);
}
try
{
var response = ParseResponse(RawRequest(data == null ? null : PrinterEncoding.GetBytes(data)));
if (data == "00")
{
return(response, new DeviceStatus());
}
var rawStatus = ParseRawResponse(RawRequest(data == null ? null : PrinterEncoding.GetBytes("F80C")));
return(response, ParseStatus(rawStatus));
}
catch (InvalidResponseException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E107", e.Message);
return(string.Empty, deviceStatus);
}
catch (Exception e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E101", e.Message);
return(string.Empty, deviceStatus);
}
}
}
public virtual (string, DeviceStatus) GetRawDeviceInfo()
{
var(response00, status00) = Request("00");
if (!status00.Ok)
{
throw new InvalidDeviceInfoException();
}
var fields = response00.Split(new int[] { 4, 4 });
if (fields.Length != 2)
{
throw new InvalidDeviceInfoException();
}
DeviceNo = PrinterEncoding.GetBytes(fields[1]);
var(responseFP, statusFP) = Request("F807");
if (!statusFP.Ok)
{
throw new InvalidDeviceInfoException();
}
var response = $"{response00}\t{responseFP}";
return(response, statusFP);
}
protected virtual (string, DeviceStatus) ParseResponse(byte[]?rawResponse)
{
var(response, status) = ParseResponseAsByteArray(rawResponse);
if (response == null)
{
return("", status);
}
return(PrinterEncoding.GetString(response), status);
}
protected virtual string ParseResponse(byte[]?rawResponse)
{
var data = ParseRawResponse(rawResponse);
if (data == null)
{
return(string.Empty);
}
var response = PrinterEncoding.GetString(data);
return(response);
}
protected virtual byte[] BuildHostFrame(byte[]?data)
{
// Frame header
var frame = new List <byte>();
frame.Add(MarkerSTX);
frame.AddRange(DeviceNo == null ? PrinterEncoding.GetBytes("0000") : DeviceNo);
frame.AddRange(data);
frame.AddRange(ByteTo2Bytes((byte)(10 + (data != null ? data.Length : 0))));
frame.AddRange(ComputeCS(frame.ToArray()));
frame.Add(MarkerETX);
return(frame.ToArray());
}
public override DeviceStatusWithRawResponse RawRequest(RequestFrame requestFrame)
{
if (requestFrame.RawRequest.Length == 0)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E401", "Request length must be at least 1 character");
return(new DeviceStatusWithRawResponse(deviceStatus));
}
var cmd = PrinterEncoding.GetBytes(requestFrame.RawRequest.Substring(0, 1))[0];
var data = requestFrame.RawRequest.Substring(1);
var(rawResponse, status) = Request(cmd, data);
var deviceStatusWithRawResponse = new DeviceStatusWithRawResponse(status);
deviceStatusWithRawResponse.RawResponse = rawResponse;
return(deviceStatusWithRawResponse);
}
protected virtual (string, DeviceStatus) ParseResponse(byte[]?rawResponse)
{
if (rawResponse == null)
{
throw new InvalidResponseException("no response");
}
var(preamblePos, separatorPos, postamblePos, terminatorPos) = (0u, 0u, 0u, 0u);
for (uint i = 0u; i < rawResponse.Length; i++)
{
var b = rawResponse[i];
switch (b)
{
case MarkerPreamble:
preamblePos = i;
break;
case MarkerSeparator:
separatorPos = i;
break;
case MarkerPostamble:
postamblePos = i;
break;
case MarkerTerminator:
terminatorPos = i;
break;
}
}
if (preamblePos + 4 <= separatorPos && separatorPos + 6 < postamblePos && postamblePos + 4 < terminatorPos)
{
var data = rawResponse.Slice(preamblePos + 4, separatorPos);
var status = rawResponse.Slice(separatorPos + 1, postamblePos);
var bcc = rawResponse.Slice(postamblePos + 1, terminatorPos);
var computedBcc = ComputeBCC(rawResponse.Slice(preamblePos + 1, postamblePos + 1));
if (bcc.SequenceEqual(computedBcc))
{
var response = PrinterEncoding.GetString(data);
return(response, ParseStatus(status));
}
}
throw new InvalidResponseException("The response is invalid. Checksum does not match.");
}
protected (string, DeviceStatus) Request(byte command, string?data = null)
{
lock (frameSyncLock)
{
try
{
System.Diagnostics.Trace.WriteLine($"Request({command:X}): '{data}'");
return(ParseResponse(RawRequest(command, data == null ? null : PrinterEncoding.GetBytes(data))));
}
catch (InvalidResponseException e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E107", e.Message);
return(string.Empty, deviceStatus);
}
catch (Exception e)
{
var deviceStatus = new DeviceStatus();
deviceStatus.AddError("E101", e.Message);
return(string.Empty, deviceStatus);
}
}
}
protected (string, DeviceStatus) Request(byte command, string data)
{
System.Diagnostics.Trace.WriteLine($"Request({command:X}): '{data}'");
return ParseResponse(RawRequest(command, PrinterEncoding.GetBytes(data)));
}