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author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
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committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h | |
download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h')
-rw-r--r-- | contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h b/contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h new file mode 100644 index 0000000000..08c90b6582 --- /dev/null +++ b/contrib/libs/poco/Foundation/include/Poco/LocalDateTime.h @@ -0,0 +1,388 @@ +// +// LocalDateTime.h +// +// Library: Foundation +// Package: DateTime +// Module: LocalDateTime +// +// Definition of the LocalDateTime class. +// +// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. +// and Contributors. +// +// SPDX-License-Identifier: BSL-1.0 +// + + +#ifndef Foundation_LocalDateTime_INCLUDED +#define Foundation_LocalDateTime_INCLUDED + + +#include "Poco/Foundation.h" +#include "Poco/DateTime.h" + + +namespace Poco { + + +class Foundation_API LocalDateTime + /// This class represents an instant in local time + /// (as opposed to UTC), expressed in years, months, days, + /// hours, minutes, seconds and milliseconds based on the + /// Gregorian calendar. + /// + /// In addition to the date and time, the class also + /// maintains a time zone differential, which denotes + /// the difference in seconds from UTC to local time, + /// i.e. UTC = local time - time zone differential. + /// + /// Although LocalDateTime supports relational and arithmetic + /// operators, all date/time comparisons and date/time arithmetics + /// should be done in UTC, using the DateTime or Timestamp + /// class for better performance. The relational operators + /// normalize the dates/times involved to UTC before carrying out + /// the comparison. + /// + /// The time zone differential is based on the input date and + /// time and current time zone. A number of constructors accept + /// an explicit time zone differential parameter. These should + /// not be used since daylight savings time processing is impossible + /// since the time zone is unknown. Each of the constructors + /// accepting a tzd parameter have been marked as deprecated and + /// may be removed in a future revision. +{ +public: + LocalDateTime(); + /// Creates a LocalDateTime with the current date/time + /// for the current time zone. + + LocalDateTime(int year, int month, int day, int hour = 0, int minute = 0, int second = 0, int millisecond = 0, int microsecond = 0); + /// Creates a LocalDateTime for the given Gregorian local date and time. + /// * year is from 0 to 9999. + /// * month is from 1 to 12. + /// * day is from 1 to 31. + /// * hour is from 0 to 23. + /// * minute is from 0 to 59. + /// * second is from 0 to 60 (allowing leap seconds). + /// * millisecond is from 0 to 999. + /// * microsecond is from 0 to 999. + + //@ deprecated + LocalDateTime(int tzd, int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond); + /// Creates a LocalDateTime for the given Gregorian date and time in the + /// time zone denoted by the time zone differential in tzd. + /// * tzd is in seconds. + /// * year is from 0 to 9999. + /// * month is from 1 to 12. + /// * day is from 1 to 31. + /// * hour is from 0 to 23. + /// * minute is from 0 to 59. + /// * second is from 0 to 60 (allowing leap seconds). + /// * millisecond is from 0 to 999. + /// * microsecond is from 0 to 999. + + LocalDateTime(const DateTime& dateTime); + /// Creates a LocalDateTime from the UTC time given in dateTime, + /// using the time zone differential of the current time zone. + + //@ deprecated + LocalDateTime(int tzd, const DateTime& dateTime); + /// Creates a LocalDateTime from the UTC time given in dateTime, + /// using the given time zone differential. Adjusts dateTime + /// for the given time zone differential. + + //@ deprecated + LocalDateTime(int tzd, const DateTime& dateTime, bool adjust); + /// Creates a LocalDateTime from the UTC time given in dateTime, + /// using the given time zone differential. If adjust is true, + /// adjusts dateTime for the given time zone differential. + + LocalDateTime(double julianDay); + /// Creates a LocalDateTime for the given Julian day in the local time zone. + + //@ deprecated + LocalDateTime(int tzd, double julianDay); + /// Creates a LocalDateTime for the given Julian day in the time zone + /// denoted by the time zone differential in tzd. + + LocalDateTime(const LocalDateTime& dateTime); + /// Copy constructor. Creates the LocalDateTime from another one. + + ~LocalDateTime(); + /// Destroys the LocalDateTime. + + LocalDateTime& operator = (const LocalDateTime& dateTime); + /// Assigns another LocalDateTime. + + LocalDateTime& operator = (const Timestamp& timestamp); + /// Assigns a timestamp + + LocalDateTime& operator = (double julianDay); + /// Assigns a Julian day in the local time zone. + + LocalDateTime& assign(int year, int month, int day, int hour = 0, int minute = 0, int second = 0, int millisecond = 0, int microseconds = 0); + /// Assigns a Gregorian local date and time. + /// * year is from 0 to 9999. + /// * month is from 1 to 12. + /// * day is from 1 to 31. + /// * hour is from 0 to 23. + /// * minute is from 0 to 59. + /// * second is from 0 to 60 (allowing leap seconds). + /// * millisecond is from 0 to 999. + /// * microsecond is from 0 to 999. + + //@ deprecated + LocalDateTime& assign(int tzd, int year, int month, int day, int hour, int minute, int second, int millisecond, int microseconds); + /// Assigns a Gregorian local date and time in the time zone denoted by + /// the time zone differential in tzd. + /// * tzd is in seconds. + /// * year is from 0 to 9999. + /// * month is from 1 to 12. + /// * day is from 1 to 31. + /// * hour is from 0 to 23. + /// * minute is from 0 to 59. + /// * second is from 0 to 60 (allowing leap seconds). + /// * millisecond is from 0 to 999. + /// * microsecond is from 0 to 999. + + //@ deprecated + LocalDateTime& assign(int tzd, double julianDay); + /// Assigns a Julian day in the time zone denoted by the + /// time zone differential in tzd. + + void swap(LocalDateTime& dateTime); + /// Swaps the LocalDateTime with another one. + + int year() const; + /// Returns the year. + + int month() const; + /// Returns the month (1 to 12). + + int week(int firstDayOfWeek = DateTime::MONDAY) const; + /// Returns the week number within the year. + /// FirstDayOfWeek should be either SUNDAY (0) or MONDAY (1). + /// The returned week number will be from 0 to 53. Week number 1 is the week + /// containing January 4. This is in accordance to ISO 8601. + /// + /// The following example assumes that firstDayOfWeek is MONDAY. For 2005, which started + /// on a Saturday, week 1 will be the week starting on Monday, January 3. + /// January 1 and 2 will fall within week 0 (or the last week of the previous year). + /// + /// For 2007, which starts on a Monday, week 1 will be the week startung on Monday, January 1. + /// There will be no week 0 in 2007. + + int day() const; + /// Returns the day witin the month (1 to 31). + + int dayOfWeek() const; + /// Returns the weekday (0 to 6, where + /// 0 = Sunday, 1 = Monday, ..., 6 = Saturday). + + int dayOfYear() const; + /// Returns the number of the day in the year. + /// January 1 is 1, February 1 is 32, etc. + + int hour() const; + /// Returns the hour (0 to 23). + + int hourAMPM() const; + /// Returns the hour (0 to 12). + + bool isAM() const; + /// Returns true if hour < 12; + + bool isPM() const; + /// Returns true if hour >= 12. + + int minute() const; + /// Returns the minute (0 to 59). + + int second() const; + /// Returns the second (0 to 59). + + int millisecond() const; + /// Returns the millisecond (0 to 999) + + int microsecond() const; + /// Returns the microsecond (0 to 999) + + double julianDay() const; + /// Returns the julian day for the date. + + int tzd() const; + /// Returns the time zone differential. + + DateTime utc() const; + /// Returns the UTC equivalent for the local date and time. + + Timestamp timestamp() const; + /// Returns the date and time expressed as a Timestamp. + + Timestamp::UtcTimeVal utcTime() const; + /// Returns the UTC equivalent for the local date and time. + + bool operator == (const LocalDateTime& dateTime) const; + bool operator != (const LocalDateTime& dateTime) const; + bool operator < (const LocalDateTime& dateTime) const; + bool operator <= (const LocalDateTime& dateTime) const; + bool operator > (const LocalDateTime& dateTime) const; + bool operator >= (const LocalDateTime& dateTime) const; + + LocalDateTime operator + (const Timespan& span) const; + LocalDateTime operator - (const Timespan& span) const; + Timespan operator - (const LocalDateTime& dateTime) const; + LocalDateTime& operator += (const Timespan& span); + LocalDateTime& operator -= (const Timespan& span); + +protected: + LocalDateTime(Timestamp::UtcTimeVal utcTime, Timestamp::TimeDiff diff, int tzd); + + void determineTzd(bool adjust = false); + /// Recalculate the tzd based on the _dateTime member based + /// on the current timezone using the Standard C runtime functions. + /// If adjust is true, then adjustForTzd() is called after the + /// differential is calculated. + + void adjustForTzd(); + /// Adjust the _dateTime member based on the _tzd member. + + std::time_t dstOffset(int& dstOffset) const; + /// Determine the DST offset for the current date/time. + +private: + DateTime _dateTime; + int _tzd; + + friend class DateTimeFormatter; + friend class DateTimeParser; +}; + + +// +// inlines +// +inline int LocalDateTime::year() const +{ + return _dateTime.year(); +} + + +inline int LocalDateTime::month() const +{ + return _dateTime.month(); +} + + +inline int LocalDateTime::week(int firstDayOfWeek) const +{ + return _dateTime.week(firstDayOfWeek); +} + + +inline int LocalDateTime::day() const +{ + return _dateTime.day(); +} + + +inline int LocalDateTime::dayOfWeek() const +{ + return _dateTime.dayOfWeek(); +} + + +inline int LocalDateTime::dayOfYear() const +{ + return _dateTime.dayOfYear(); +} + + +inline int LocalDateTime::hour() const +{ + return _dateTime.hour(); +} + + +inline int LocalDateTime::hourAMPM() const +{ + return _dateTime.hourAMPM(); +} + + +inline bool LocalDateTime::isAM() const +{ + return _dateTime.isAM(); +} + + +inline bool LocalDateTime::isPM() const +{ + return _dateTime.isPM(); +} + + +inline int LocalDateTime::minute() const +{ + return _dateTime.minute(); +} + + +inline int LocalDateTime::second() const +{ + return _dateTime.second(); +} + + +inline int LocalDateTime::millisecond() const +{ + return _dateTime.millisecond(); +} + + +inline int LocalDateTime::microsecond() const +{ + return _dateTime.microsecond(); +} + + +inline double LocalDateTime::julianDay() const +{ + return _dateTime.julianDay(); +} + + +inline int LocalDateTime::tzd() const +{ + return _tzd; +} + + +inline Timestamp LocalDateTime::timestamp() const +{ + return Timestamp::fromUtcTime(_dateTime.utcTime()); +} + + +inline Timestamp::UtcTimeVal LocalDateTime::utcTime() const +{ + return _dateTime.utcTime() - ((Timestamp::TimeDiff) _tzd)*10000000; +} + + +inline void LocalDateTime::adjustForTzd() +{ + _dateTime += Timespan(((Timestamp::TimeDiff) _tzd)*Timespan::SECONDS); +} + + +inline void swap(LocalDateTime& d1, LocalDateTime& d2) +{ + d1.swap(d2); +} + + +} // namespace Poco + + +#endif // Foundation_LocalDateTime_INCLUDED |