void LayerDataHandler::loadFromFile()

in src/doc_data.cpp [26:80]
51 lines of code
7 McCabe index (conditional complexity)

void LayerDataHandler::loadFromFile(
  const string& fileName,
  shared_ptr<DataParser> parser) {

  vector<Corpus> corpora(args_->thread);
  if (args_->compressFile == "gzip") {
    foreach_line_gz(
      fileName,
      args_->numGzFile,
      [&](std::string& line) {
        auto& corpus = corpora[getThreadID()];
        ParseResults example;
        if (parser->parse(line, example)) {
          corpus.push_back(example);
        }
      },
      args_->thread
    );
  } else {
    ifstream fin(fileName);
    if (!fin.is_open()) {
      std::cerr << fileName << " cannot be opened for loading!" << std::endl;
      exit(EXIT_FAILURE);
    }
    fin.close();

    cout << "Loading data from file : " << fileName << endl;
    foreach_line(
      fileName,
      [&](std::string& line) {
        auto& corpus = corpora[getThreadID()];
        ParseResults example;
        if (parser->parse(line, example)) {
          corpus.push_back(example);
        }
      },
      args_->thread
    );
  }

  // Glue corpora together.
  auto totalSize = std::accumulate(corpora.begin(), corpora.end(), size_t(0),
                     [](size_t l, Corpus& r) { return l + r.size(); });
  size_t destCursor = examples_.size();
  examples_.resize(totalSize + examples_.size());
  for (const auto &subcorp: corpora) {
    std::copy(subcorp.begin(), subcorp.end(), examples_.begin() + destCursor);
    destCursor += subcorp.size();
  }
  cout << "Total number of examples loaded : " << examples_.size() << endl;
  size_ = examples_.size();
  if (size_ == 0) {
    errorOnZeroExample(fileName);
  }
}