: chunk_size_{chunk_size}, chunk_char_ptr_(new unsigned char[chunk_size]),

      zstream_ptr_(new z_stream(), zstream_deleter) {}

uint64_t Base::checksum() { return zstream_ptr_->adler; }

void Base::updateOutput(Buffer::Instance& output_buffer) {

  const uint64_t n_output = chunk_size_ - zstream_ptr_->avail_out;

  if (n_output == 0) {

    return;

  }

  output_buffer.add(static_cast<void*>(chunk_char_ptr_.get()), n_output);

  zstream_ptr_->avail_out = chunk_size_;

  zstream_ptr_->next_out = chunk_char_ptr_.get();

}