Function BuildTransit

generator/transit_generator_experimental.cpp:156–203

}

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

  OsmIdToFeatureIdsMap mapping;
  FillOsmIdToFeatureIdsMap(osmIdToFeatureIdsPath, mapping);

  std::string const transitPath = base::JoinPath(transitDir, countryId);
  if (!Platform::IsFileExistsByFullPath(transitPath))
  {
    LOG(LWARNING, ("Path to experimental transit files doesn't exist:", transitPath));
    return {};
  }

  TransitData data;
  DeserializeFromJson(mapping, transitPath, data);

  // Transit section can be empty.
  if (data.IsEmpty())
  {
    LOG(LWARNING, ("Experimental transit data deserialized from jsons is empty:", transitPath));
    return {};
  }

  CalculateBestPedestrianSegments(mwmPath, countryId, data);

  data.Sort();

  data.CheckSorted();
  data.CheckValid();
  data.CheckUnique();

  // Transit graph numerates features according to their orderto their order..
  EdgeIdToFeatureId edgeToFeature;
  for (uint32_t i = 0; i < data.GetEdges().size(); ++i)
  {
    auto const & e = data.GetEdges()[i];
    EdgeId id(e.GetStop1Id(), e.GetStop2Id(), e.GetLineId());
    edgeToFeature[id] = i;
  }

  FilesContainerW container(mwmPath, FileWriter::OP_WRITE_EXISTING);
  auto writer = container.GetWriter(TRANSIT_FILE_TAG);
  data.Serialize(*writer);
  return edgeToFeature;
}
}  // namespace experimental
}  // namespace transit