/// <summary>Common constructor</summary>
/// <param name="maxFrameLength">
/// The maximum length of the decoded frame
/// NOTE: A see <see cref="DotNetty.Codecs.TooLongFrameException" /> is thrown if the length of the frame exceeds this
/// value.
/// </param>
/// <param name="stripDelimiter">whether the decoded frame should strip out the delimiter or not</param>
/// <param name="failFast">
/// If true, a <see cref="DotNetty.Codecs.TooLongFrameException" /> is
/// thrown as soon as the decoder notices the length of the
/// frame will exceed<tt>maxFrameLength</tt> regardless of
/// whether the entire frame has been read.
/// If false, a <see cref="DotNetty.Codecs.TooLongFrameException" /> is
/// thrown after the entire frame that exceeds maxFrameLength has been read.
/// </param>
/// <param name="delimiters">delimiters</param>
public DelimiterBasedFrameDecoder(int maxFrameLength, bool stripDelimiter, bool failFast, params IByteBuffer[] delimiters)
{
ValidateMaxFrameLength(maxFrameLength);
if (delimiters is null)
{
CThrowHelper.ThrowNullReferenceException(CExceptionArgument.delimiters);
}
if (0u >= (uint)delimiters.Length)
{
CThrowHelper.ThrowArgumentException_EmptyDelimiters();
}
if (IsLineBased(delimiters) && !IsSubclass())
{
_lineBasedDecoder = new LineBasedFrameDecoder(maxFrameLength, stripDelimiter, failFast);
_delimiters = null;
}
else
{
_delimiters = new IByteBuffer[delimiters.Length];
for (int i = 0; i < delimiters.Length; i++)
{
IByteBuffer d = delimiters[i];
ValidateDelimiter(d);
_delimiters[i] = d.Slice(d.ReaderIndex, d.ReadableBytes);
}
_lineBasedDecoder = null;
}
_maxFrameLength = maxFrameLength;
_stripDelimiter = stripDelimiter;
_failFast = failFast;
}
/// <summary>
/// Initializes a new instance of the <see cref="StringDecoder" /> class with the specified character
/// set..
/// </summary>
/// <param name="encoding">Encoding.</param>
public StringDecoder(Encoding encoding)
{
if (encoding is null)
{
CThrowHelper.ThrowNullReferenceException(CExceptionArgument.encoding);
}
_encoding = encoding;
}
static void ValidateDelimiter(IByteBuffer delimiter)
{
if (delimiter is null)
{
CThrowHelper.ThrowNullReferenceException(CExceptionArgument.delimiter);
}
if (!delimiter.IsReadable())
{
CThrowHelper.ThrowArgumentException_EmptyDelimiter();
}
}