internal void ParseDataMessage(ArraySegment <byte> dataMessage, MessageType message, object[] parameters, bool fromPrinter)
{
ReadOnlySpan <byte> buffer = dataMessage.AsSpan();
int dataIndex = 0;
MessageDescription messageDescription = MessageDescription.Find(message);
string messageFormat = fromPrinter ? messageDescription.PrinterFormat : messageDescription.ProgramFormat;
int parameterIndex = 0;
for (int formatIndex = 0; formatIndex < messageFormat.Length; formatIndex++)
{
char c = messageFormat[formatIndex];
if (c == 'T' || c == 'B' || c == 'W' || c == 'Z' || c == 'Y' || c == 'Q' || c == 'q')
{
ReadOnlySpan <byte> parameterData;
// If it is last token, take everything until the end.
if (formatIndex + 1 == messageFormat.Length)
{
parameterData = buffer.Slice(dataIndex);
}
else
{
char nc = messageFormat[formatIndex + 1];
// If next token is text or number, we know use known size
if (nc == 'T' || nc == 'B' || nc == 'W' || nc == 'Z' || nc == 'Y')
{
if (c == 'W')
{
parameterData = buffer.Slice(dataIndex, 4);
}
else if (c == 'Y')
{
parameterData = buffer.Slice(dataIndex, 7);
}
else if (c == 'Z')
{
parameterData = buffer.Slice(dataIndex, 4);
}
else
{
parameterData = buffer.Slice(dataIndex, 1);
}
}
else
{
byte endByte = (byte)nc;
parameterData = buffer.Slice(dataIndex);
for (int i = 0; i < parameterData.Length; i++)
{
if (parameterData[i] == endByte)
{
parameterData = parameterData.Slice(0, i);
break;
}
}
}
}
dataIndex += parameterData.Length;
switch (c)
{
case 'W':
{
int number = 0;
for (int i = 0; i < 4; i++)
{
number = number * 16 + ((parameterData[i] >= 'A') ? (parameterData[i] - 'A' + 10) : (parameterData[i] - '0'));
}
Store(number, parameters[parameterIndex++]);
}
break;
case 'T':
case 'B':
byte[] stringBytes = new byte[parameterData.Length];
int stringBytesUsed = 0;
for (int i = 0; i < parameterData.Length; i++)
{
if (parameterData[i] == 16)
{
stringBytes[stringBytesUsed++] = (byte)(parameterData[++i] + 64);
}
else
{
stringBytes[stringBytesUsed++] = parameterData[i];
}
}
var s = ToString(stringBytes, stringBytesUsed);
if (c == 'T')
{
Store(s, parameters[parameterIndex++]);
}
else
{
Store(double.Parse(s), parameters[parameterIndex++]);
}
break;
case 'Q':
// TODO: Implement this
break;
case 'q':
// TODO: Implement this
break;
// TODO: Remove this as it looks like it is not used!!!
case 'Y':
{
int day, month, year;
day = parameterData[0] - '0' * 10 + parameterData[1] - '0';
month = parameterData[3] - '0' * 10 + parameterData[4] - '0';
year = parameterData[5] - '0' * 10 + parameterData[6] - '0';
Store(day, parameters[parameterIndex++]);
Store(month, parameters[parameterIndex++]);
Store(year, parameters[parameterIndex++]);
}
break;
case 'Z':
{
int hours, minutes;
hours = parameterData[0] - '0' * 10 + parameterData[1] - '0';
minutes = parameterData[2] - '0' * 10 + parameterData[3] - '0';
Store(hours, parameters[parameterIndex++]);
Store(minutes, parameters[parameterIndex++]);
}
break;
}
}
else
{
byte expectedByte = (byte)c;
if (buffer[dataIndex] != expectedByte)
{
throw new IllFormedMessageException($"Encountered byte {buffer[dataIndex]} [{(char)buffer[dataIndex]}] while expecting {expectedByte} [{(char)expectedByte}]");
}
dataIndex++;
}
}
}
internal ArraySegment <byte> CreateDataMessage(byte[] messageBuffer, MessageType message, object[] parameters, bool fromPrinter)
{
int length = 0;
MessageDescription messageDescription = MessageDescription.Find(message);
string messageFormat = fromPrinter ? messageDescription.PrinterFormat : messageDescription.ProgramFormat;
int parameterIndex = 0;
foreach (char c in messageFormat)
{
switch (c)
{
case 'W':
int a = Convert.ToInt32(parameters[parameterIndex++]);
for (int i = 0; i < 4; i++, a /= 16)
{
messageBuffer[length + 3 - i] = (byte)((a % 16 >= 10) ? (a % 16 - 10 + 'A') : (a % 16 + '0'));
}
length += 4;
break;
case 'B':
string number = parameters[parameterIndex++]?.ToString() ?? string.Empty;
foreach (var cc in ToBytes(number))
{
messageBuffer[length++] = cc;
}
break;
case 'T':
string text = parameters[parameterIndex++]?.ToString() ?? string.Empty;
foreach (var cc in ToBytes(text))
{
if (cc >= 0 && cc < 32)
{
messageBuffer[length++] = 16;
messageBuffer[length++] = (byte)(cc + 64);
}
else
{
messageBuffer[length++] = cc;
}
}
break;
case 'Q':
{
DateTime dt = (DateTime)parameters[parameterIndex++];
messageBuffer[length++] = (byte)(dt.Day / 10 + '0');
messageBuffer[length++] = (byte)(dt.Day % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Month / 10 + '0');
messageBuffer[length++] = (byte)(dt.Month % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Year % 100 / 10 + '0');
messageBuffer[length++] = (byte)(dt.Year % 10 + '0');
messageBuffer[length++] = (byte)' ';
messageBuffer[length++] = (byte)(dt.Hour / 10 + '0');
messageBuffer[length++] = (byte)(dt.Hour % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Minute / 10 + '0');
messageBuffer[length++] = (byte)(dt.Minute % 10 + '0');
}
break;
case 'q':
{
DateTime dt = (DateTime)parameters[parameterIndex++];
messageBuffer[length++] = (byte)(dt.Day / 10 + '0');
messageBuffer[length++] = (byte)(dt.Day % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Month / 10 + '0');
messageBuffer[length++] = (byte)(dt.Month % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Year % 100 / 10 + '0');
messageBuffer[length++] = (byte)(dt.Year % 10 + '0');
messageBuffer[length++] = (byte)' ';
messageBuffer[length++] = (byte)(dt.Hour / 10 + '0');
messageBuffer[length++] = (byte)(dt.Hour % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Minute / 10 + '0');
messageBuffer[length++] = (byte)(dt.Minute % 10 + '0');
messageBuffer[length++] = (byte)'-';
messageBuffer[length++] = (byte)(dt.Second / 10 + '0');
messageBuffer[length++] = (byte)(dt.Second % 10 + '0');
}
break;
default:
messageBuffer[length++] = (byte)c;
break;
// TODO: Remove this as it looks like it is not used!!!
case 'Y':
// TODO: Use DateTime structure instead of three arguments
int day = Convert.ToInt32(parameters[parameterIndex++]);
int month = Convert.ToInt32(parameters[parameterIndex++]);
int year = Convert.ToInt32(parameters[parameterIndex++]);
messageBuffer[length++] = (byte)(day / 10 + '0');
messageBuffer[length++] = (byte)(day % 10 + '0');
messageBuffer[length++] = (byte)'0';
messageBuffer[length++] = (byte)(month / 10 + '0');
messageBuffer[length++] = (byte)(month % 10 + '0');
messageBuffer[length++] = (byte)(year / 10 + '0');
messageBuffer[length++] = (byte)(year % 10 + '0');
break;
case 'Z':
// TODO: Use DateTime structure instead of two arguments
int hour = Convert.ToInt32(parameters[parameterIndex++]);
int minute = Convert.ToInt32(parameters[parameterIndex++]);
messageBuffer[length++] = (byte)(hour / 10 + '0');
messageBuffer[length++] = (byte)(hour % 10 + '0');
messageBuffer[length++] = (byte)(minute / 10 + '0');
messageBuffer[length++] = (byte)(minute % 10 + '0');
break;
}
}
return(new ArraySegment <byte>(messageBuffer, 0, length));
}