public static ReadOnlySpan <char> ParseField(ref SequenceReader <byte> sequenceReader, byte delimiter, bool isEol, Span <char> readResult)
{
if (!sequenceReader.TryReadTo(out ReadOnlySpan <byte> readByte, delimiter))
{
if (!isEol)
{
readResult[0] = Char.MinValue;
return(readResult.Slice(0, 1));
}
int lenght = Encoding.UTF8.GetChars(sequenceReader.UnreadSequence, readResult);
sequenceReader.AdvanceToEnd();
return(readResult.Slice(0, lenght).TrimEnd('\r'));
}
return(readResult.Slice(0, Encoding.UTF8.GetChars(readByte.TrimEnd((byte)13), readResult)));
}