src/marnav/nmea/zda.cpp

   1 #include <marnav/nmea/zda.hpp>
   2 #include <marnav/nmea/io.hpp>
   3 #include <stdexcept>
   4
   5 namespace marnav
   6 {
   7 namespace nmea
   8 {
   9 constexpr sentence_id zda::ID;
  10 constexpr const char * zda::TAG;
  11
  12 zda::zda()
  13         : sentence(ID, TAG, talker::global_positioning_system)
  14 {
  15 }
  16
  17 zda::zda(talker talk, fields::const_iterator first, fields::const_iterator last)
  18         : sentence(ID, TAG, talk)
  19 {
  20         if (std::distance(first, last) != 6)
  21                 throw std::invalid_argument{"invalid number of fields in zda"};
  22
  23         utils::optional<uint32_t> d;
  24         utils::optional<uint32_t> m;
  25         utils::optional<uint32_t> y;
  26
  27         read(*(first + 0), time_utc_);
  28         read(*(first + 1), d);
  29         read(*(first + 2), m);
  30         read(*(first + 3), y);
  31         read(*(first + 4), local_zone_hours_);
  32         read(*(first + 5), local_zone_minutes_);
  33
  34         if (d && m && y)
  35                 date_ = nmea::date{*y, to_month(*m), *d};
  36 }
  37
  38 void zda::append_data_to(std::string & s) const
  39 {
  40         utils::optional<uint32_t> d;
  41         utils::optional<uint32_t> m;
  42         utils::optional<uint32_t> y;
  43
  44         if (date_) {
  45                 d = date_->day();
  46                 m = to_numeric(date_->mon());
  47                 y = date_->year();
  48         }
  49
  50         append(s, to_string(time_utc_));
  51         append(s, format(d, 2));
  52         append(s, format(m, 2));
  53         append(s, format(y, 4));
  54         append(s, format(local_zone_hours_, 2));
  55         append(s, format(local_zone_minutes_, 2));
  56 }
  57 }
  58 }