Method init

c++/src/Compression.cc:358–367

#endif

  void ZlibCompressionStream::init() {
    strm_.zalloc = nullptr;
    strm_.zfree = nullptr;
    strm_.opaque = nullptr;
    strm_.next_in = nullptr;

    if (deflateInit2(&strm_, level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
      throw CompressionError("Error while calling deflateInit2() for zlib.");
    }
  }

  void ZlibCompressionStream::end() {
    (void)deflateEnd(&strm_);