Cimbalino.Phone.Toolkit.Compression.InflateManager.Sync C# (CSharp) Method

        internal int Sync()
        {
            int n; // number of bytes to look at
            int p; // pointer to bytes
            int m; // number of marker bytes found in a row
            long r, w; // temporaries to save total_in and total_out

            // set up
            if (mode != InflateManagerMode.BAD)
            {
                mode = InflateManagerMode.BAD;
                marker = 0;
            }
            if ((n = _codec.AvailableBytesIn) == 0)
                return ZlibConstants.Z_BUF_ERROR;
            p = _codec.NextIn;
            m = marker;

            // search
            while (n != 0 && m < 4)
            {
                if (_codec.InputBuffer[p] == mark[m])
                {
                    m++;
                }
                else if (_codec.InputBuffer[p] != 0)
                {
                    m = 0;
                }
                else
                {
                    m = 4 - m;
                }
                p++; n--;
            }

            // restore
            _codec.TotalBytesIn += p - _codec.NextIn;
            _codec.NextIn = p;
            _codec.AvailableBytesIn = n;
            marker = m;

            // return no joy or set up to restart on a new block
            if (m != 4)
            {
                return ZlibConstants.Z_DATA_ERROR;
            }
            r = _codec.TotalBytesIn;
            w = _codec.TotalBytesOut;
            Reset();
            _codec.TotalBytesIn = r;
            _codec.TotalBytesOut = w;
            mode = InflateManagerMode.BLOCKS;
            return ZlibConstants.Z_OK;
        }