private void VerifyCheckSum()
{
if (_consumed.Count < 3)
{
throw new CodeError("Expected at least 3 codes in the token.");
}
var allBytes = _consumed.SelectMany(c => c.Values).ToList();
var bytes = new List <byte>(allBytes.Take(allBytes.Count - 2));
var expectedCheckSum = _checksumCalculator.CalculateChecksum(bytes);
var providedCheckSum = allBytes[allBytes.Count - 2];
if (expectedCheckSum != providedCheckSum)
{
throw new CodeError($"Check sum mismatch. Expected {expectedCheckSum}, found {providedCheckSum}");
}
}
public EncodedCode128(IMapping mapping,
IEnumerable <Symbol> symbols,
string encodedContent,
IChecksumCalculator calculator)
{
var symbolList = symbols.ToList();
Symbols = symbolList;
Data = Symbols.SelectMany(c => c.Values).ToList();
EncodedContent = encodedContent;
if (calculator != null)
{
var checkSum = calculator.CalculateChecksum(Data);
var checkSumSymbol = new Symbol(SpecialCodes.CheckSum, mapping.GetPattern(checkSum), checkSum);
symbolList.Add(checkSumSymbol);
symbolList.Add(mapping.StopSymbol);
}
FullData = Symbols.SelectMany(c => c.Values).ToList();
}
private void CalculateChecksum() => _calculatedChecksum = _calculator.CalculateChecksum(_payload).ElementAt(0);
private void AppendChecksum()
{
var checksum = _calculator.CalculateChecksum(_packetInfo).ToList();
_currentPacket.AddRange(checksum);
}
private uint CalculateFileChecksum(string filePath)
{
return(checksumCalculator.CalculateChecksum(filePath));
}