public BoundaryStreamReader(string boundary, Stream baseStream, Encoding streamEncoding, int bufferLength)
{
if (baseStream == null)
{
throw new ArgumentNullException("baseStream");
}
if (!baseStream.CanRead)
{
throw new ArgumentException("baseStream must be a readable stream.");
}
if (!baseStream.CanSeek)
{
baseStream = new HistoryStream(baseStream, bufferLength);
}
if (bufferLength < boundary.Length + 6)
{
throw new ArgumentOutOfRangeException(nameof(bufferLength),
"The buffer needs to be big enough to contain the boundary and control characters (6 bytes)");
}
Log = NullLogger <IOLogSource> .Instance;
BaseStream = baseStream;
// by default if unspecified an encoding should be ascii
// some people are of the opinion that utf-8 should be parsed by default
// or that it should depend on the source page.
// Need to test what browsers do in the wild.
Encoding = streamEncoding;
_beginBoundary = Encoding.GetBytes("\r\n--" + boundary);
_localBuffer = new byte[bufferLength];
_beginBoundaryAsString = "--" + boundary;
AtPreamble = true;
}
void GivenAHistoryStreamWithBufferSize(int size) { HistoryStream = new HistoryStream(Stream, size); }
void GivenAHistoryStream() { HistoryStream = new HistoryStream(Stream); }