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generator/maxspeeds_collector.hpp

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+#pragma once
+
+#include "generator/collector_interface.hpp"
+#include "generator/feature_builder.hpp"
+#include "generator/osm_element.hpp"
+
+#include <fstream>
+#include <memory>
+#include <string>
+
+namespace generator
+{
+
+/// \brief Collects all maxspeed tags value and saves them to a csv file.
+/// Every line describes maxspeed, maxspeed:forward and maxspeed:backward
+/// tags of features. The format of the lines is described below.
+class MaxspeedsCollector : public CollectorInterface
+{
+public:
+  /// \param filePath path to csv file.
+  explicit MaxspeedsCollector(std::string const & filename);
+
+  // CollectorInterface overrides:
+  std::shared_ptr<CollectorInterface> Clone(IDRInterfacePtr const & = {}) const override;
+
+  void CollectFeature(feature::FeatureBuilder const &, OsmElement const & p) override;
+  void Finish() override;
+
+  IMPLEMENT_COLLECTOR_IFACE(MaxspeedsCollector);
+  void MergeInto(MaxspeedsCollector & collector) const;
+
+protected:
+  void Save() override;
+  void OrderCollectedData() override;
+
+private:
+  // |m_data| contains strings with maxspeed tags value for corresponding features in one of the
+  // following formats
+  // 1. osm id,units kmh or mph,maxspeed value
+  // 2. osm id,units kmh or mph,maxspeed:forward value
+  // 3. osm id,units kmh or mph,maxspeed:forward value,maxspeed:backward value
+  // There are possible examples of strings contained in the list |m_data|:
+  // 2343313,Metric,60
+  // 13243214,Imperial,60
+  // 3243245345,Metric,60,80
+  // 134243,Imperial,30,50
+  // 45432423,Metric,60,65534
+  // 53445423,Metric,60,65533
+  //
+  // Note 1. 65534 means kNoneMaxSpeed and 65533 means kWalkMaxSpeed. They are constants for
+  // maxspeed tag value "none" and "walk" correspondingly.
+  // Note 2. Saying osm id means osm id of features with OsmElement::EntityType::Way type without
+  // any prefixes. It's done so to simplify the debugging process. This way it's very easy knowing
+  // osm id to see the feature on the web.
+  // Note 3. A string is saved in |m_data| only if it's valid and parsed successfully
+  // with ParseMaxspeedTag() function. That means all macro like RU:urban or GE:rural
+  // are converted to an appropriate speed value and macro "none" and "walk" are converted
+  // to |kNoneMaxSpeed| and |kWalkMaxSpeed|.
+  std::ofstream m_stream;
+};
+}  // namespace generator