Rebex.IO.Compression.Inflate.inflateSync C# (CSharp) Метод

        internal int inflateSync(ZStream z)
        {
            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 (z == null || z.istate == null)
                return Z_STREAM_ERROR;
            if (z.istate.mode != BAD)
            {
                z.istate.mode = BAD;
                z.istate.marker = 0;
            }
            if ((n = z.avail_in) == 0)
                return Z_BUF_ERROR;
            p = z.next_in_index;
            m = z.istate.marker;

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

            // restore
            z.total_in += p - z.next_in_index;
            z.next_in_index = p;
            z.avail_in = n;
            z.istate.marker = m;

            // return no joy or set up to restart on a new block
            if (m != 4)
            {
                return Z_DATA_ERROR;
            }
            r = z.total_in; w = z.total_out;
            inflateReset(z);
            z.total_in = r; z.total_out = w;
            z.istate.mode = BLOCKS;
            return Z_OK;
        }