85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
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#include <vanetza/geodesy/country_database.hpp>
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#include <vanetza/geodesy/country_data_reader.hpp>
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#include <boost/geometry/algorithms/within.hpp>
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#include <boost/units/quantity.hpp>
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#include <fstream>
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#include <iterator>
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#include <vector>
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#ifdef VANETZA_WITH_EMBEDDED_COUNTRY_DATA
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#include <vanetza/common/byte_view.hpp>
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namespace vanetza { namespace geodesy { namespace country { vanetza::byte_view_range embedded(); } } }
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#endif
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namespace vanetza
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{
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namespace geodesy
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{
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CountryDatabase CountryDatabase::embedded(std::string* error)
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{
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CountryDatabase db;
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#ifdef VANETZA_WITH_EMBEDDED_COUNTRY_DATA
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auto view = country::embedded();
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db.load(view.data(), view.size(), error);
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#else
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if (error) {
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*error = "embedded country data not available";
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}
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#endif
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return db;
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}
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bool CountryDatabase::load(const std::string& path, std::string* error)
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{
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std::ifstream file(path, std::ios::binary);
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if (!file) {
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if (error) {
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*error = "cannot open file: " + path;
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}
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return false;
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}
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std::vector<uint8_t> data { std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>() };
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return load(data.data(), data.size(), error);
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}
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bool CountryDatabase::load(const uint8_t* data, std::size_t length, std::string* error)
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{
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m_countries.clear();
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auto result = read_country_data(data, length,
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[this](M49Code code, CountryPolygon&& polygon) {
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m_countries.emplace(code, std::move(polygon));
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});
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if (result.failed()) {
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if (error) {
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*error = result.message() + " at offset " + std::to_string(result.position());
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}
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m_countries.clear();
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return false;
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}
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return true;
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}
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bool CountryDatabase::is_inside(M49Code country, const GeodeticPosition& position) const
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{
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auto it = m_countries.find(country);
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if (it == m_countries.end()) {
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return false;
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}
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country::Point point(position.longitude / units::degree, position.latitude / units::degree);
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return boost::geometry::within(point, it->second);
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}
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bool CountryDatabase::empty() const
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{
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return m_countries.empty();
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}
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} // namespace geodesy
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} // namespace vanetza
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