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This commit is contained in:
Raúl Marín 2021-08-09 16:16:17 +02:00
parent 367b314df6
commit 0771329bf3
2 changed files with 8 additions and 6 deletions
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4
base/common/DateLUTImpl.cpp
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@ -60,6 +60,7 @@ DateLUTImpl::DateLUTImpl(const std::string & time_zone_)
offset_at_start_of_epoch = cctz_time_zone.lookup(cctz_time_zone.lookup(epoch).pre).offset;
offset_at_start_of_lut = cctz_time_zone.lookup(cctz_time_zone.lookup(lut_start).pre).offset;
offset_is_whole_number_of_hours_during_epoch = true;
offset_is_whole_number_of_minutes_during_epoch = true;
cctz::civil_day date = lut_start;
@ -108,6 +109,9 @@ DateLUTImpl::DateLUTImpl(const std::string & time_zone_)
if (offset_is_whole_number_of_hours_during_epoch && start_of_day > 0 && start_of_day % 3600)
offset_is_whole_number_of_hours_during_epoch = false;
if (offset_is_whole_number_of_minutes_during_epoch && start_of_day > 0 && start_of_day % 60)
offset_is_whole_number_of_minutes_during_epoch = false;
/// If UTC offset was changed this day.
/// Change in time zone without transition is possible, e.g. Moscow 1991 Sun, 31 Mar, 02:00 MSK to EEST
cctz::time_zone::civil_transition transition{};

10
base/common/DateLUTImpl.h
View File

@ -193,6 +193,7 @@ private:
/// UTC offset at the beginning of the first supported year.
Time offset_at_start_of_lut;
bool offset_is_whole_number_of_hours_during_epoch;
bool offset_is_whole_number_of_minutes_during_epoch;
/// Time zone name.
std::string time_zone;
@ -464,7 +465,7 @@ public:
inline unsigned toSecond(Time t) const
{
if (offset_is_whole_number_of_hours_during_epoch)
if (likely(offset_is_whole_number_of_minutes_during_epoch))
{
Time res = t % 60;
if (likely(res >= 0))
@ -478,15 +479,12 @@ public:
if (time >= lut[index].time_at_offset_change())
time += lut[index].amount_of_offset_change();
Time res = time % 60;
if (likely(res >= 0))
return res;
return res + 60;
return time % 60;
}
inline unsigned toMinute(Time t) const
{
if (t >= 0 && offset_is_whole_number_of_hours_during_epoch)
if (likely(t >= 0 && offset_is_whole_number_of_hours_during_epoch))
return (t / 60) % 60;
/// To consider the DST changing situation within this day