IronRuby.Builtins.RubyBufferedStream.AppendRawBytes C# (CSharp) Method

        private void AppendRawBytes(MutableString/*!*/ buffer, int count) {
            Debug.Assert(count > 0);

            int remaining = count;

            if (_bufferCount > 0) {
                int c = Math.Min(_bufferCount, count);
                buffer.Append(_buffer, _bufferStart, c);
                ConsumeBuffered(c);
                remaining -= c;
            }

            if (count == Int32.MaxValue) {
                const int chunk = 1024;

                int done = buffer.GetByteCount();
                int bytesRead;
                do {
                    buffer.Append(_stream, chunk);
                    bytesRead = buffer.GetByteCount() - done;
                    done += bytesRead;
                } while (bytesRead == chunk);
            } else {
                buffer.Append(_stream, remaining);
            }
        }