public override int Read(byte[] buffer, int offset, int count)
{
if (m_Compressed)
{
long pos = m_Uncomp.Position;
m_Uncomp.Seek(0, SeekOrigin.End);
while (pos + count > m_Uncomp.Length && RawStream.Position + 8 < RawStream.Length)
{
int block = Raw.ReadInt32();
int ucLen = Raw.ReadInt32();
if (block > 0x10000000 || block <= 0 || ucLen > 0x10000000 || ucLen <= 0)
{
break;
}
if (RawStream.Position + block > RawStream.Length)
{
break;
}
if (m_ReadBuff == null || m_ReadBuff.Length < block)
{
m_ReadBuff = new byte[block];
}
if (m_CompBuff == null || m_CompBuff.Length < ucLen)
{
m_CompBuff = new byte[ucLen];
}
else
{
ucLen = m_CompBuff.Length;
}
Raw.Read(m_ReadBuff, 0, block);
ZLibError error = ZLib.uncompress(m_CompBuff, ref ucLen, m_ReadBuff, block);
if (error != ZLibError.Z_OK)
{
throw new Exception("ZLib error uncompressing: " + error.ToString());
}
m_Uncomp.Write(m_CompBuff, 0, ucLen);
}
m_Uncomp.Position = pos;
return(m_Uncomp.Read(buffer, offset, count));
}
else
{
return(RawStream.Read(buffer, offset, count));
}
}
public override long Seek(long offset, SeekOrigin origin)
{
if (m_Compressed)
{
long absPos = offset;
if (origin == SeekOrigin.Current)
{
absPos += m_Uncomp.Position;
}
if (absPos < 0)
{
throw new Exception("Cannot seek past the begining of the stream.");
}
long pos = m_Uncomp.Position;
m_Uncomp.Seek(0, SeekOrigin.End);
while ((origin == SeekOrigin.End || absPos >= m_Uncomp.Length) && RawStream.Position < RawStream.Length)
{
int block = Raw.ReadInt32();
int ucLen = Raw.ReadInt32();
if (m_ReadBuff == null || m_ReadBuff.Length < block)
{
m_ReadBuff = new byte[block];
}
if (m_CompBuff == null || m_CompBuff.Length < ucLen)
{
m_CompBuff = new byte[ucLen];
}
else
{
ucLen = m_CompBuff.Length;
}
Raw.Read(m_ReadBuff, 0, block);
ZLibError error = ZLib.uncompress(m_CompBuff, ref ucLen, m_ReadBuff, block);
if (error != ZLibError.Z_OK)
{
throw new Exception("ZLib error uncompressing: " + error.ToString());
}
m_Uncomp.Write(m_CompBuff, 0, ucLen);
}
m_Uncomp.Position = pos;
return(m_Uncomp.Seek(offset, origin));
}
else
{
return(RawStream.Seek(offset, origin));
}
}
public PacketReader GetCompressedReader()
{
int fullLen = ReadInt32();
int destLen = 0;
byte[] buff;
if (fullLen >= 4)
{
int packLen = ReadInt32();
destLen = packLen;
if (destLen < 0)
{
destLen = 0;
}
buff = new byte[destLen];
if (fullLen > 4 && destLen > 0)
{
if (ZLib.uncompress(buff, ref destLen, CopyBytes(this.Position, fullLen - 4), fullLen - 4) !=
ZLibError.Z_OK)
{
destLen = 0;
buff = new byte[1];
}
}
else
{
destLen = 0;
buff = new byte[1];
}
}
else
{
buff = new byte[1];
}
return(new PacketReader(buff, false));
}