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41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
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#include <Yandex/time2str.h>
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#include <Yandex/DateLUT.h>
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namespace Yandex
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{
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DateLUT::DateLUT()
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{
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time_t t, next_t;
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for (t = Yandex::Time2Date(DATE_LUT_MIN); t <= DATE_LUT_MAX; t = next_t)
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{
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/** Дополнительный вызов Time2Date для случая, когда в 1981-1984 году в России,
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* 1 апреля начиналось в час ночи, не в полночь.
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*/
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next_t = Yandex::Time2Date(Yandex::TimeDayShift(t));
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Values & values = lut[next_t];
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struct tm tm;
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localtime_r(&t, &tm);
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values.year = tm.tm_year + 1900;
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values.month = tm.tm_mon + 1;
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values.day_of_week = tm.tm_wday == 0 ? 7 : tm.tm_wday;
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values.day_of_month = tm.tm_mday;
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tm.tm_hour = 0;
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tm.tm_min = 0;
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tm.tm_sec = 0;
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tm.tm_isdst = -1;
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values.date = mktime(&tm);
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}
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}
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time_t DateLUT::toDate(time_t t) const { return lut.upper_bound(t)->second.date; }
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unsigned DateLUT::toMonth(time_t t) const { return lut.upper_bound(t)->second.month; }
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unsigned DateLUT::toYear(time_t t) const { return lut.upper_bound(t)->second.year; }
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unsigned DateLUT::toDayOfWeek(time_t t) const { return lut.upper_bound(t)->second.day_of_week; }
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unsigned DateLUT::toDayOfMonth(time_t t) const { return lut.upper_bound(t)->second.day_of_month; }
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}
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