zlib_util_decompress_inflateinit2.cpp

std::unique_ptr<char[]> Decoder::decompress(size_t &length, size_t off) {
    std::unique_ptr<char[]> src = read(length, off);
  
    z_stream zs = {}; // zero-initialize
    // using inflateInit2 with windowBits(2nd argument) set to MAX_WBITS | 32, triggers header detection to properly
    // decompress both zlib and gzip streams
    if (inflateInit2(&zs, MAX_WBITS | 32) != Z_OK) {
      errStream << "Failed to initialize zlib inflate" << std::endl;
      return nullptr;
    }
    // code truncated ...
}