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generator/restriction_generator.hpp

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+#pragma once
+
+#include "generator/restriction_collector.hpp"
+#include "generator/routing_index_generator.hpp"
+
+#include <memory>
+#include <string>
+
+namespace routing_builder
+{
+std::unique_ptr<routing::IndexGraph> CreateIndexGraph(std::string const & mwmPath, std::string const & country,
+                                                      CountryParentNameGetterFn const & countryParentNameGetterFn);
+
+void SerializeRestrictions(RestrictionCollector & restrictionCollector,
+                           std::string const & mwmPath);
+// This function is the generator tool's interface to building the mwm
+// section which contains road restrictions. (See https://wiki.openstreetmap.org/wiki/Restriction)
+// As long as the restrictions are built later than the road features themselves
+// during the generation process, we have to store a mapping between osm ids and feature ids:
+// the restrictions are written in OSM terms while for the road features only their feature ids
+// are known.
+// This results in the following pipeline:
+//   -- OsmToFeatureTranslator uses RestrictionsWriter to prepare a .csv file
+//      with restrictions in terms of OSM ids while parsing the OSM source.
+//   -- OsmID2FeatureID saves the OSM id -> feature id mapping.
+//   -- After all features have been created, RestrictionCollector reads the csv
+//      and builds the mwm section with restrictions. The serialization/deserialization
+//      code is in the routing library.
+
+/// \brief Builds section with road restrictions.
+/// \param mwmPath path to mwm which will be added with road restriction section.
+/// \param restrictionPath comma separated (csv like) file with road restrictions in osm ids terms
+/// in the following format:
+/// <type of restrictions>, <osm id 1 of the restriction>, <osm id 2>, and so on
+/// For example:
+/// Only, 335049632, 49356687,
+/// No, 157616940, 157616940,
+/// \param osmIdsToFeatureIdsPath a binary file with mapping form osm ids to feature ids.
+/// One osm id is mapped to one feature id. The file should be saved with the help of
+/// OsmID2FeatureID class or using a similar way.
+bool BuildRoadRestrictions(routing::IndexGraph & graph,
+                           std::string const & mwmPath,
+                           std::string const & restrictionPath,
+                           std::string const & osmIdsToFeatureIdsPath);
+}  // namespace routing_builder