//! Convert a utc time to local time static time_type utc_to_local(const time_type& t) { date_type time_t_start_day(1970,1,1); time_type time_t_start_time(time_t_start_day,time_duration_type(0,0,0)); if (t < time_t_start_time) { boost::throw_exception(std::out_of_range("Cannot convert dates prior to Jan 1, 1970")); BOOST_DATE_TIME_UNREACHABLE_EXPRESSION(return time_t_start_time); // should never reach }
//! Convert a utc time to local time static time_type utc_to_local(const time_type& t) { date_type time_t_start_day(1970,1,1); time_type time_t_start_time(time_t_start_day,time_duration_type(0,0,0)); if (t < time_t_start_time) { throw std::out_of_range("Cannot convert dates prior to Jan 1, 1970"); } date_duration_type dd = t.date() - time_t_start_day; time_duration_type td = t.time_of_day(); std::time_t t2 = dd.days()*86400 + td.hours()*3600 + td.minutes()*60 + td.seconds(); std::tm tms, *tms_ptr; tms_ptr = c_time::localtime(&t2, &tms); //tms_ptr = std::localtime(&t2); date_type d(static_cast<unsigned short>(tms_ptr->tm_year + 1900), static_cast<unsigned short>(tms_ptr->tm_mon + 1), static_cast<unsigned short>(tms_ptr->tm_mday)); time_duration_type td2(tms_ptr->tm_hour, tms_ptr->tm_min, tms_ptr->tm_sec, t.time_of_day().fractional_seconds()); return time_type(d,td2); }