#include "il2cpp-config.h"
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#if IL2CPP_TARGET_WINDOWS
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#include "os/TimeZone.h"
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#include "os/Win32/WindowsHeaders.h"
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/*
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* Magic number to convert FILETIME base Jan 1, 1601 to DateTime - base Jan, 1, 0001
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*/
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const uint64_t FILETIME_ADJUST = ((uint64_t)504911232000000000LL);
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namespace il2cpp
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{
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namespace os
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{
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static void
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convert_to_absolute_date(SYSTEMTIME *date)
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{
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#define IS_LEAP(y) ((y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0))
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static int days_in_month[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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static int leap_days_in_month[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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/* from the calendar FAQ */
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int a = (14 - date->wMonth) / 12;
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int y = date->wYear - a;
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int m = date->wMonth + 12 * a - 2;
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int d = (1 + y + y / 4 - y / 100 + y / 400 + (31 * m) / 12) % 7;
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/* d is now the day of the week for the first of the month (0 == Sunday) */
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int day_of_week = date->wDayOfWeek;
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/* set day_in_month to the first day in the month which falls on day_of_week */
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int day_in_month = 1 + (day_of_week - d);
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if (day_in_month <= 0)
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day_in_month += 7;
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/* wDay is 1 for first weekday in month, 2 for 2nd ... 5 means last - so work that out allowing for days in the month */
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date->wDay = day_in_month + (date->wDay - 1) * 7;
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if (date->wDay > (IS_LEAP(date->wYear) ? leap_days_in_month[date->wMonth - 1] : days_in_month[date->wMonth - 1]))
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date->wDay -= 7;
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}
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// names[0] - standardName
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// names[1] - daylightName
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bool TimeZone::GetTimeZoneData(int32_t year, int64_t data[4], std::string names[2], bool* daylight_inverted)
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{
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//On Windows, we should always load timezones in managed
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return false;
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}
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}
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}
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#endif
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