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#pragma once
#include "geometry/rect2d.hpp"
#include "coding/file_writer.hpp"
#include <cstdint>
#include <limits>
#include <string>
#include <vector>
namespace feature
{
class FeatureBuilder;
// Writes features to file.
class FeaturesCollector
{
public:
static size_t constexpr kBufferSize = 48000;
FeaturesCollector(std::string const & fName, FileWriter::Op op = FileWriter::Op::OP_WRITE_TRUNCATE);
virtual ~FeaturesCollector();
static uint64_t GetCurrentPosition();
std::string const & GetFilePath() const { return m_dataFile.GetName(); }
/// \brief Serializes |f|.
/// \returns Feature id of serialized feature.
virtual uint32_t Collect(FeatureBuilder const & f);
virtual uint32_t Collect(FeatureBuilder & f)
{
return Collect(const_cast<FeatureBuilder const &>(f));
}
virtual void Finish() {}
protected:
/// \return Feature offset in the file, which is used as an ID later
uint32_t WriteFeatureBase(std::vector<char> const & bytes, FeatureBuilder const & fb);
void Flush();
FileWriter m_dataFile;
m2::RectD m_bounds;
private:
void Write(char const * src, size_t size);
void FlushBuffer();
std::vector<char> m_writeBuffer;
size_t m_writePosition = 0;
uint32_t m_featureID = 0;
};
class FeaturesAndRawGeometryCollector : public FeaturesCollector
{
FileWriter m_rawGeometryFileStream;
size_t m_rawGeometryCounter = 0;
public:
FeaturesAndRawGeometryCollector(std::string const & featuresFileName,
std::string const & rawGeometryFileName);
~FeaturesAndRawGeometryCollector() override;
uint32_t Collect(FeatureBuilder const & f) override;
};
uint32_t CheckedFilePosCast(FileWriter const & f);
} // namespace feature
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