Function BuildTransit

generator/transit_generator.cpp:188–222

}

void BuildTransit(std::string const & mwmDir, CountryId const & countryId, std::string const & osmIdToFeatureIdsPath,
                  std::string const & transitDir)
{
  std::string const mwmPath = GetMwmPath(mwmDir, countryId);
  LOG(LINFO, ("Building transit section for", mwmPath));

  OsmIdToFeatureIdsMap mapping;
  FillOsmIdToFeatureIdsMap(osmIdToFeatureIdsPath, mapping);
  std::vector<m2::RegionD> mwmBorders;
  LoadBorders(mwmDir, countryId, mwmBorders);

  Platform::FilesList graphFiles;
  Platform::GetFilesByExt(base::AddSlashIfNeeded(transitDir), TRANSIT_FILE_EXTENSION, graphFiles);

  GraphData jointData;
  for (auto const & fileName : graphFiles)
  {
    auto const filePath = base::JoinPath(transitDir, fileName);
    GraphData data;
    DeserializeFromJson(mapping, filePath, data);
    // @todo(bykoianko) Json should be clipped on feature generation step. It's much more efficient.
    data.ClipGraph(mwmBorders);
    jointData.AppendTo(data);
  }

  if (jointData.IsEmpty())
    return;  // Empty transit section.

  ProcessGraph(mwmPath, countryId, mapping, jointData);
  jointData.CheckValidSortedUnique();

  FilesContainerW cont(mwmPath, FileWriter::OP_WRITE_EXISTING);
  auto writer = cont.GetWriter(TRANSIT_FILE_TAG);
  jointData.Serialize(*writer);
}
}  // namespace routing::transit