Observe

NS_IMETHODIMP nsEffectiveTLDService::Observe(nsISupports* aSubject,
                                             const char* aTopic,
                                             const char16_t* aData) {

  if (nsCRT::strcmp(aTopic, "public-suffix-list-updated") == 0) {

    nsCOMPtr<nsIFile> mDAFSABinFile;
    nsresult rv;
    mDAFSABinFile = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
    if (mDAFSABinFile) {
      rv = mDAFSABinFile->InitWithPath(nsDependentString(aData));

      nsCOMPtr<nsIInputStream> inputStream;
      rv = NS_NewLocalFileInputStream(getter_AddRefs(inputStream),
                                      mDAFSABinFile);

      if (rv != NS_ERROR_FILE_NOT_FOUND) {
        uint64_t length = 0;
        rv = inputStream->Available(&length);
        std::cout << length << "\n\n";  // For debugging, to be removed

        unsigned char kDafsaRemote[length];
        while (1) {
          uint32_t count;
          rv = inputStream->Read((char*)kDafsaRemote, length, &count);
          NS_ENSURE_SUCCESS(rv, rv);

          // We reached the end of the file.
          if (count == 0) {
            break;
          }
        }
        inputStream->Close();
        for (auto k : kDafsaRemote) {
          std::cout << (int)k << "\n";  // For debugging, to be removed
        }

        nsEffectiveTLDService::mGraph = mozilla::Dafsa(kDafsaRemote);
      }
    }
  }
  return NS_OK;
}