Blizzard.Patch.BSDIFFParse C# (CSharp) Method

        private void BSDIFFParse()
        {
            using (MemoryStream ms = RLEUnpack())
            using (BinaryReader br = new BinaryReader(ms))
            {
                BSDIFF40 m_BSDIFF40 = br.ReadStruct<BSDIFF40>();

                Debug.Assert(m_BSDIFF40.m_magic.FourCC() == "BSDIFF40");

                Debug.Assert(m_BSDIFF40.m_ctrlBlockSize > 0 && m_BSDIFF40.m_diffBlockSize > 0);

                Debug.Assert(m_BSDIFF40.m_sizeAfter == m_PTCH.m_sizeAfter);

                m_ctrlBlock = br.ReadBytes((int)m_BSDIFF40.m_ctrlBlockSize).ToBinaryReader();
                m_diffBlock = new MemoryStream(br.ReadBytes((int)m_BSDIFF40.m_diffBlockSize));
                m_extraBlock = new MemoryStream(br.ReadRemaining());
            }
        }