protected void WriteXpressBlock(byte[] buf, int offset, int length)
{
int num;
Xpress.Compress(buf, offset, length, this.CompressBuf, 5, 65536, out num);
this.CompressBuf[0] = 2;
int num2 = 1;
ushort val = (ushort)(num - 1);
Serialization.SerializeUInt16(this.CompressBuf, ref num2, val);
val = (ushort)(length - 1);
Serialization.SerializeUInt16(this.CompressBuf, ref num2, val);
this.m_tcpChannel.Write(this.CompressBuf, 0, 5 + num);
}
public static int SerializeToBuffer(JET_EMITDATACTX emitContext, byte[] logdata, int cblogdata, byte[] targetBuffer, int targetBufferOffsetToStart, out int totalCompressedSize)
{
NetworkChannelPacket networkChannelPacket = new NetworkChannelPacket(targetBuffer, targetBufferOffsetToStart);
networkChannelPacket.GrowthDisabled = true;
int num = BlockModeCompressedDataMsg.CalculateBlockCount(cblogdata);
int[] array = new int[num];
int num2 = 73 + 4 * num;
int num3 = num2 + targetBufferOffsetToStart;
int num4 = 0;
totalCompressedSize = 0;
int num5 = cblogdata;
for (int i = 0; i < num; i++)
{
int num6 = Math.Min(num5, 65536);
Xpress.Compress(logdata, num4, num6, targetBuffer, num3, num6, out array[i]);
num4 += num6;
num3 += array[i];
totalCompressedSize += array[i];
num5 -= num6;
}
networkChannelPacket.Append(1);
int val = num2 - 5 + totalCompressedSize;
networkChannelPacket.Append(val);
val = 1145261378;
networkChannelPacket.Append(val);
val = num2 - 5;
networkChannelPacket.Append(val);
DateTime utcNow = DateTime.UtcNow;
networkChannelPacket.Append(utcNow);
long val2 = 0L;
networkChannelPacket.Append(val2);
val2 = Win32StopWatch.GetSystemPerformanceCounter();
networkChannelPacket.Append(val2);
networkChannelPacket.Append(cblogdata);
val = emitContext.dwVersion;
networkChannelPacket.Append(val);
val2 = (long)emitContext.qwSequenceNum;
networkChannelPacket.Append(val2);
val = (int)emitContext.grbitOperationalFlags;
networkChannelPacket.Append(val);
DateTime time = DateTime.SpecifyKind(emitContext.logtimeEmit, DateTimeKind.Utc);
networkChannelPacket.Append(time);
val = emitContext.lgposLogData.lGeneration;
networkChannelPacket.Append(val);
ushort val3 = (ushort)emitContext.lgposLogData.isec;
networkChannelPacket.Append(val3);
val3 = (ushort)emitContext.lgposLogData.ib;
networkChannelPacket.Append(val3);
for (int j = 0; j < num; j++)
{
networkChannelPacket.Append(array[j]);
}
return(num2 + totalCompressedSize);
}