Method load_data

src/tz.cpp:2186–2222

template <class TimeType>
void
time_zone::load_data(std::istream& inf,
                     std::int32_t tzh_leapcnt, std::int32_t tzh_timecnt,
                     std::int32_t tzh_typecnt, std::int32_t tzh_charcnt)
{
    using namespace std::chrono;
    transitions_ = load_transitions<TimeType>(inf, tzh_timecnt);
    auto indices = load_indices(inf, tzh_timecnt);
    auto infos = load_ttinfo(inf, tzh_typecnt);
    auto abbrev = load_abbreviations(inf, tzh_charcnt);
#if !MISSING_LEAP_SECONDS
    auto& leap_seconds = get_tzdb_list().front().leap_seconds;
    if (leap_seconds.empty() && tzh_leapcnt > 0)
        leap_seconds = load_leaps<TimeType>(inf, tzh_leapcnt);
#endif
    ttinfos_.reserve(infos.size());
    for (auto& info : infos)
    {
        ttinfos_.push_back({seconds{info.tt_gmtoff},
                            abbrev.c_str() + info.tt_abbrind,
                            info.tt_isdst != 0});
    }
    auto i = 0u;
    if (transitions_.empty() || transitions_.front().timepoint != min_seconds)
    {
        transitions_.emplace(transitions_.begin(), min_seconds);
        auto tf = std::find_if(ttinfos_.begin(), ttinfos_.end(),
                               [](const expanded_ttinfo& ti)
                                   {return ti.is_dst == 0;});
        if (tf == ttinfos_.end())
            tf = ttinfos_.begin();
        transitions_[i].info = &*tf;
        ++i;
    }
    for (auto j = 0u; i < transitions_.size(); ++i, ++j)
        transitions_[i].info = ttinfos_.data() + indices[j];
}

void
time_zone::init_impl()