src/marnav/nmea/zda.cpp

   1 #include <marnav/nmea/zda.hpp>
   2 #include <marnav/nmea/io.hpp>
   3 #include <stdexcept>
   4
   5 namespace marnav::nmea
   6 {
   7 constexpr sentence_id zda::ID;
   8 constexpr const char * zda::TAG;
   9
  10 zda::zda()
  11         : sentence(ID, TAG, talker::global_positioning_system)
  12 {
  13 }
  14
  15 zda::zda(talker talk, fields::const_iterator first, fields::const_iterator last)
  16         : sentence(ID, TAG, talk)
  17 {
  18         if (std::distance(first, last) != 6)
  19                 throw std::invalid_argument{"invalid number of fields in zda"};
  20
  21         std::optional<uint32_t> d;
  22         std::optional<uint32_t> m;
  23         std::optional<uint32_t> y;
  24
  25         read(*(first + 0), time_utc_);
  26         read(*(first + 1), d);
  27         read(*(first + 2), m);
  28         read(*(first + 3), y);
  29         read(*(first + 4), local_zone_hours_);
  30         read(*(first + 5), local_zone_minutes_);
  31
  32         if (d && m && y)
  33                 date_ = nmea::date{*y, to_month(*m), *d};
  34 }
  35
  36 void zda::append_data_to(std::string & s, const version &) const
  37 {
  38         std::optional<uint32_t> d;
  39         std::optional<uint32_t> m;
  40         std::optional<uint32_t> y;
  41
  42         if (date_) {
  43                 d = date_->day();
  44                 m = to_numeric(date_->mon());
  45                 y = date_->year();
  46         }
  47
  48         append(s, to_string(time_utc_));
  49         append(s, format(d, 2));
  50         append(s, format(m, 2));
  51         append(s, format(y, 4));
  52         append(s, format(local_zone_hours_, 2));
  53         append(s, format(local_zone_minutes_, 2));
  54 }
  55 }