unsigned len = below.read(reinterpret_cast<char *>(priv->stream.next_in), in_buffer+buffer_size-priv->stream.next_in);
priv->stream.avail_in += len;
if(!len && below.eof())
unsigned len = below.read(reinterpret_cast<char *>(priv->stream.next_in), in_buffer+buffer_size-priv->stream.next_in);
priv->stream.avail_in += len;
if(!len && below.eof())