Current File : //backups/router/usr/local/include/boost/locale/date_time.hpp
//
// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#ifndef BOOST_LOCALE_DATE_TIME_HPP_INCLUDED
#define BOOST_LOCALE_DATE_TIME_HPP_INCLUDED
#include <boost/locale/date_time_facet.hpp>
#include <boost/locale/formatting.hpp>
#include <boost/locale/hold_ptr.hpp>
#include <boost/locale/time_zone.hpp>
#include <array>
#include <locale>
#include <stdexcept>
#include <vector>
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4275 4251 4231 4660)
#endif
namespace boost { namespace locale {
/// \defgroup date_time Date, Time, Timezone and Calendar manipulations
///
/// This module provides various calendar, timezone and date time services
/// @{
/// \brief This error is thrown in case of invalid state that occurred
class BOOST_SYMBOL_VISIBLE date_time_error : public std::runtime_error {
public:
/// Constructor of date_time_error class
date_time_error(const std::string& e) : std::runtime_error(e) {}
};
/// \brief This class represents a pair of period_type and the integer
/// values that describes its amount. For example 3 days or 4 years.
///
/// Usually obtained as product of period_type and integer or
/// my calling a representative functions
/// For example day()*3 == date_time_period(day(),3) == day(3)
struct date_time_period {
period::period_type type; ///< The type of period, i.e. era, year, day etc.
int value; ///< The value the actual number of \a periods
/// Operator + returns copy of itself
date_time_period operator+() const { return *this; }
/// Operator -, switches the sign of period
date_time_period operator-() const { return date_time_period(type, -value); }
/// Constructor that creates date_time_period from period_type \a f and a value \a v -- default 1.
date_time_period(period::period_type f = period::period_type(), int v = 1) : type(f), value(v) {}
};
namespace period {
/// Get period_type for: special invalid value, should not be used directly
inline period_type invalid()
{
return period_type(marks::invalid);
}
/// Get period_type for: Era i.e. AC, BC in Gregorian and Julian calendar, range [0,1]
inline period_type era()
{
return period_type(marks::era);
}
/// Get period_type for: Year, it is calendar specific, for example 2011 in Gregorian calendar.
inline period_type year()
{
return period_type(marks::year);
}
/// Get period_type for: Extended year for Gregorian/Julian calendars, where 1 BC == 0, 2 BC == -1.
inline period_type extended_year()
{
return period_type(marks::extended_year);
}
/// Get period_type for: The month of year, calendar specific, in Gregorian [0..11]
inline period_type month()
{
return period_type(marks::month);
}
/// Get period_type for: The day of month, calendar specific, in Gregorian [1..31]
inline period_type day()
{
return period_type(marks::day);
}
/// Get period_type for: The number of day in year, starting from 1, in Gregorian [1..366]
inline period_type day_of_year()
{
return period_type(marks::day_of_year);
}
/// Get period_type for: Day of week, Sunday=1, Monday=2,..., Saturday=7.
///
/// Note that updating this value respects local day of week, so for example,
/// If first day of week is Monday and the current day is Tuesday then setting
/// the value to Sunday (1) would forward the date by 5 days forward and not backward
/// by two days as it could be expected if the numbers were taken as is.
inline period_type day_of_week()
{
return period_type(marks::day_of_week);
}
/// Get period_type for: Original number of the day of the week in month. For example 1st Sunday,
/// 2nd Sunday, etc. in Gregorian [1..5]
inline period_type day_of_week_in_month()
{
return period_type(marks::day_of_week_in_month);
}
/// Get period_type for: Local day of week, for example in France Monday is 1, in US Sunday is 1, [1..7]
inline period_type day_of_week_local()
{
return period_type(marks::day_of_week_local);
}
/// Get period_type for: 24 clock hour [0..23]
inline period_type hour()
{
return period_type(marks::hour);
}
/// Get period_type for: 12 clock hour [0..11]
inline period_type hour_12()
{
return period_type(marks::hour_12);
}
/// Get period_type for: am or pm marker [0..1]
inline period_type am_pm()
{
return period_type(marks::am_pm);
}
/// Get period_type for: minute [0..59]
inline period_type minute()
{
return period_type(marks::minute);
}
/// Get period_type for: second [0..59]
inline period_type second()
{
return period_type(marks::second);
}
/// Get period_type for: The week number in the year
inline period_type week_of_year()
{
return period_type(marks::week_of_year);
}
/// Get period_type for: The week number within current month
inline period_type week_of_month()
{
return period_type(marks::week_of_month);
}
/// Get period_type for: First day of week, constant, for example Sunday in US = 1, Monday in France = 2
inline period_type first_day_of_week()
{
return period_type(marks::first_day_of_week);
}
/// Get date_time_period for: Era i.e. AC, BC in Gregorian and Julian calendar, range [0,1]
inline date_time_period era(int v)
{
return date_time_period(era(), v);
}
/// Get date_time_period for: Year, it is calendar specific, for example 2011 in Gregorian calendar.
inline date_time_period year(int v)
{
return date_time_period(year(), v);
}
/// Get date_time_period for: Extended year for Gregorian/Julian calendars, where 1 BC == 0, 2 BC == -1.
inline date_time_period extended_year(int v)
{
return date_time_period(extended_year(), v);
}
/// Get date_time_period for: The month of year, calendar specific, in Gregorian [0..11]
inline date_time_period month(int v)
{
return date_time_period(month(), v);
}
/// Get date_time_period for: The day of month, calendar specific, in Gregorian [1..31]
inline date_time_period day(int v)
{
return date_time_period(day(), v);
}
/// Get date_time_period for: The number of day in year, starting from 1, in Gregorian [1..366]
inline date_time_period day_of_year(int v)
{
return date_time_period(day_of_year(), v);
}
/// Get date_time_period for: Day of week, Sunday=1, Monday=2,..., Saturday=7.
///
/// Note that updating this value respects local day of week, so for example,
/// If first day of week is Monday and the current day is Tuesday then setting
/// the value to Sunday (1) would forward the date by 5 days forward and not backward
/// by two days as it could be expected if the numbers were taken as is.
inline date_time_period day_of_week(int v)
{
return date_time_period(day_of_week(), v);
}
/// Get date_time_period for: Original number of the day of the week in month. For example 1st Sunday,
/// 2nd Sunday, etc. in Gregorian [1..5]
inline date_time_period day_of_week_in_month(int v)
{
return date_time_period(day_of_week_in_month(), v);
}
/// Get date_time_period for: Local day of week, for example in France Monday is 1, in US Sunday is 1, [1..7]
inline date_time_period day_of_week_local(int v)
{
return date_time_period(day_of_week_local(), v);
}
/// Get date_time_period for: 24 clock hour [0..23]
inline date_time_period hour(int v)
{
return date_time_period(hour(), v);
}
/// Get date_time_period for: 12 clock hour [0..11]
inline date_time_period hour_12(int v)
{
return date_time_period(hour_12(), v);
}
/// Get date_time_period for: am or pm marker [0..1]
inline date_time_period am_pm(int v)
{
return date_time_period(am_pm(), v);
}
/// Get date_time_period for: minute [0..59]
inline date_time_period minute(int v)
{
return date_time_period(minute(), v);
}
/// Get date_time_period for: second [0..59]
inline date_time_period second(int v)
{
return date_time_period(second(), v);
}
/// Get date_time_period for: The week number in the year
inline date_time_period week_of_year(int v)
{
return date_time_period(week_of_year(), v);
}
/// Get date_time_period for: The week number within current month
inline date_time_period week_of_month(int v)
{
return date_time_period(week_of_month(), v);
}
/// Get date_time_period for: First day of week, constant, for example Sunday in US = 1, Monday in France = 2
inline date_time_period first_day_of_week(int v)
{
return date_time_period(first_day_of_week(), v);
}
/// Get predefined constant for January
inline date_time_period january()
{
return date_time_period(month(), 0);
}
/// Get predefined constant for February
inline date_time_period february()
{
return date_time_period(month(), 1);
}
/// Get predefined constant for March
inline date_time_period march()
{
return date_time_period(month(), 2);
}
/// Get predefined constant for April
inline date_time_period april()
{
return date_time_period(month(), 3);
}
/// Get predefined constant for May
inline date_time_period may()
{
return date_time_period(month(), 4);
}
/// Get predefined constant for June
inline date_time_period june()
{
return date_time_period(month(), 5);
}
/// Get predefined constant for July
inline date_time_period july()
{
return date_time_period(month(), 6);
}
/// Get predefined constant for August
inline date_time_period august()
{
return date_time_period(month(), 7);
}
/// Get predefined constant for September
inline date_time_period september()
{
return date_time_period(month(), 8);
}
/// Get predefined constant for October
inline date_time_period october()
{
return date_time_period(month(), 9);
}
/// Get predefined constant for November
inline date_time_period november()
{
return date_time_period(month(), 10);
}
/// Get predefined constant for December
inline date_time_period december()
{
return date_time_period(month(), 11);
}
/// Get predefined constant for Sunday
inline date_time_period sunday()
{
return date_time_period(day_of_week(), 1);
}
/// Get predefined constant for Monday
inline date_time_period monday()
{
return date_time_period(day_of_week(), 2);
}
/// Get predefined constant for Tuesday
inline date_time_period tuesday()
{
return date_time_period(day_of_week(), 3);
}
/// Get predefined constant for Wednesday
inline date_time_period wednesday()
{
return date_time_period(day_of_week(), 4);
}
/// Get predefined constant for Thursday
inline date_time_period thursday()
{
return date_time_period(day_of_week(), 5);
}
/// Get predefined constant for Friday
inline date_time_period friday()
{
return date_time_period(day_of_week(), 6);
}
/// Get predefined constant for Saturday
inline date_time_period saturday()
{
return date_time_period(day_of_week(), 7);
}
/// Get predefined constant for AM (Ante Meridiem)
inline date_time_period am()
{
return date_time_period(am_pm(), 0);
}
/// Get predefined constant for PM (Post Meridiem)
inline date_time_period pm()
{
return date_time_period(am_pm(), 1);
}
/// convert period_type to date_time_period(f,1)
inline date_time_period operator+(period::period_type f)
{
return date_time_period(f);
}
/// convert period_type to date_time_period(f,-1)
inline date_time_period operator-(period::period_type f)
{
return date_time_period(f, -1);
}
/// Create date_time_period of type \a f with value \a v.
template<typename T>
date_time_period operator*(period::period_type f, T v)
{
return date_time_period(f, v);
}
/// Create date_time_period of type \a f with value \a v.
template<typename T>
date_time_period operator*(T v, period::period_type f)
{
return date_time_period(f, v);
}
/// Create date_time_period of type \a f with value \a v.
template<typename T>
date_time_period operator*(T v, date_time_period f)
{
return date_time_period(f.type, f.value * v);
}
/// Create date_time_period of type \a f with value \a v.
template<typename T>
date_time_period operator*(date_time_period f, T v)
{
return date_time_period(f.type, f.value * v);
}
} // namespace period
/// \brief This class represents a set of periods.
///
/// It is generally created by operations on periods:
/// 1995*year + 3*month + 1*day. Note: operations are not commutative.
class date_time_period_set {
public:
/// Default constructor - empty set
date_time_period_set() = default;
/// Create a set of single period with value 1
date_time_period_set(period::period_type f) { basic_[0] = date_time_period(f); }
/// Create a set of single period \a fl
date_time_period_set(const date_time_period& fl) { basic_[0] = fl; }
/// Append date_time_period \a f to the set
void add(date_time_period f)
{
const size_t n = size();
if(n < basic_.size())
basic_[n] = f;
else
periods_.push_back(f);
}
/// Get number of items in list
size_t size() const
{
for(size_t i = 0; i < basic_.size(); ++i) {
if(basic_[i].type == period::period_type())
return i;
}
return basic_.size() + periods_.size();
}
/// Get item at position \a n the set, n should be in range [0,size)
const date_time_period& operator[](size_t n) const
{
if(n >= size())
throw std::out_of_range("Invalid index to date_time_period");
if(n < basic_.size())
return basic_[n];
else
return periods_[n - basic_.size()];
}
private:
std::array<date_time_period, 4> basic_;
std::vector<date_time_period> periods_;
};
/// Append two periods sets. Note this operator is not commutative
inline date_time_period_set operator+(const date_time_period_set& a, const date_time_period_set& b)
{
date_time_period_set s(a);
for(unsigned i = 0; i < b.size(); i++)
s.add(b[i]);
return s;
}
/// Append two period sets when all periods of set \b change their sign
inline date_time_period_set operator-(const date_time_period_set& a, const date_time_period_set& b)
{
date_time_period_set s(a);
for(unsigned i = 0; i < b.size(); i++)
s.add(-b[i]);
return s;
}
/// \brief this class provides an access to general calendar information.
///
/// This information is not connected to specific date but generic to locale, and timezone.
/// It is used in obtaining general information about calendar and is essential for creation of
/// date_time objects.
class BOOST_LOCALE_DECL calendar {
public:
/// Create calendar taking locale and timezone information from ios_base instance.
///
/// \throws std::bad_cast: \a ios does not have a locale with installed \ref calendar_facet
/// facet installed
calendar(std::ios_base& ios);
/// Create calendar with locale \a l and time_zone \a zone
///
/// \throws std::bad_cast: \a l does not have \ref calendar_facet facet installed
calendar(const std::locale& l, const std::string& zone);
/// Create calendar with locale \a l and default timezone
///
/// \throws std::bad_cast: \a l does not have \ref calendar_facet facet installed
calendar(const std::locale& l);
/// Create calendar with default locale and timezone \a zone
///
/// \throws std::bad_cast: global locale does not have \ref calendar_facet facet installed
calendar(const std::string& zone);
/// Create calendar with default locale and timezone
///
/// \throws std::bad_cast: global locale does not have \ref calendar_facet facet installed
calendar();
~calendar();
/// copy calendar
calendar(const calendar& other);
/// assign calendar
calendar& operator=(const calendar& other);
/// Get minimum value for period f, For example for period::day it is 1.
int minimum(period::period_type f) const;
/// Get greatest possible minimum value for period f, For example for period::day it is 1, but may be different
/// for other calendars.
int greatest_minimum(period::period_type f) const;
/// Get maximum value for period f, For example for Gregorian calendar's maximum period::day it is 31.
int maximum(period::period_type f) const;
/// Get least maximum value for period f, For example for Gregorian calendar's maximum period::day it is 28.
int least_maximum(period::period_type f) const;
/// Get first day of week for specific calendar, for example for US it is 1 - Sunday for France it is 2 - Monday
int first_day_of_week() const;
/// get calendar's locale
const std::locale& get_locale() const;
/// get calendar's time zone
const std::string& get_time_zone() const;
/// Check if the calendar is Gregorian
bool is_gregorian() const;
/// Compare calendars for equivalence: i.e. calendar types, time zones etc.
bool operator==(const calendar& other) const;
/// Opposite of ==
bool operator!=(const calendar& other) const;
private:
friend class date_time;
std::locale locale_;
std::string tz_;
hold_ptr<abstract_calendar> impl_;
};
/// \brief this class represents a date time and allows to perform various operation according to the
/// locale settings.
///
/// This class allows to manipulate various aspects of dates and times easily using arithmetic operations with
/// periods.
///
/// General arithmetic functions:
///
/// - date_time + date_time_period_set = date_time: move time point forward by specific periods like date_time +
/// month;
/// - date_time - date_time_period_set = date_time: move time point backward by specific periods like date_time -
/// month;
/// - date_time << date_time_period_set = date_time: roll time point forward by specific periods with rolling to
/// begin if overflows: like "2010-01-31" << 2* day == "2010-01-02" instead of "2010-02-02"
/// - date_time >> date_time_period_set = date_time: roll time point backward by specific periods with rolling to
/// end if overflows: like "2010-01-02" >> 2* day == "2010-01-31" instead of "2009-12-30"
/// - date_time / period_type = int - current period value: like "2010-12-21" / month == 12. "2010-12-21" / year =
/// 2010
/// - (date_time - date_time) / period_type = int: distance between dates in period_type. Like ("2010-12-01" -
/// "2008-12-01") / month = 24.
///
/// You can also assign specific periods using assignment operator like:
/// some_time = year * 1995 that sets the year to 1995.
class BOOST_LOCALE_DECL date_time {
public:
/// Default constructor, uses default calendar initialized date_time object to current time.
///
/// \throws std::bad_cast: Global locale does not have \ref calendar_facet facet installed
date_time();
/// Copy a date_time
date_time(const date_time& other);
// Move construct a date_time
date_time(date_time&&) noexcept = default;
/// copy date_time and change some fields according to the \a set
date_time(const date_time& other, const date_time_period_set& set);
/// assign the date_time
date_time& operator=(const date_time& other);
// Move assign a date_time
date_time& operator=(date_time&&) noexcept = default;
/// Create a date_time object using POSIX time \a time and default calendar
///
/// \throws std::bad_cast: Global locale does not have \ref calendar_facet facet installed
date_time(double time);
/// Create a date_time object using POSIX time \a time and calendar \a cal
date_time(double time, const calendar& cal);
/// Create a date_time object using calendar \a cal and initializes it to current time.
date_time(const calendar& cal);
/// Create a date_time object using default calendar and define values given in \a set
///
/// \throws std::bad_cast: Global locale does not have \ref calendar_facet facet installed
date_time(const date_time_period_set& set);
/// Create a date_time object using calendar \a cal and define values given in \a set
date_time(const date_time_period_set& set, const calendar& cal);
/// assign values to various periods in set \a f
date_time& operator=(const date_time_period_set& f);
/// set specific period \a f value to \a v
void set(period::period_type f, int v);
/// get specific period \a f value
int get(period::period_type f) const;
/// syntactic sugar for get(f)
int operator/(period::period_type f) const { return get(f); }
/// add single period f to the current date_time
date_time operator+(period::period_type f) const { return *this + date_time_period(f); }
/// subtract single period f from the current date_time
date_time operator-(period::period_type f) const { return *this - date_time_period(f); }
/// add single period f to the current date_time
date_time& operator+=(period::period_type f) { return *this += date_time_period(f); }
/// subtract single period f from the current date_time
date_time& operator-=(period::period_type f) { return *this -= date_time_period(f); }
/// roll forward a date by single period f.
date_time operator<<(period::period_type f) const { return *this << date_time_period(f); }
/// roll backward a date by single period f.
date_time operator>>(period::period_type f) const { return *this >> date_time_period(f); }
/// roll forward a date by single period f.
date_time& operator<<=(period::period_type f) { return *this <<= date_time_period(f); }
/// roll backward a date by single period f.
date_time& operator>>=(period::period_type f) { return *this >>= date_time_period(f); }
/// add date_time_period to the current date_time
date_time operator+(const date_time_period& v) const;
/// subtract date_time_period from the current date_time
date_time operator-(const date_time_period& v) const;
/// add date_time_period to the current date_time
date_time& operator+=(const date_time_period& v);
/// subtract date_time_period from the current date_time
date_time& operator-=(const date_time_period& v);
/// roll current date_time forward by date_time_period v
date_time operator<<(const date_time_period& v) const;
/// roll current date_time backward by date_time_period v
date_time operator>>(const date_time_period& v) const;
/// roll current date_time forward by date_time_period v
date_time& operator<<=(const date_time_period& v);
/// roll current date_time backward by date_time_period v
date_time& operator>>=(const date_time_period& v);
/// add date_time_period_set v to the current date_time
date_time operator+(const date_time_period_set& v) const;
/// subtract date_time_period_set v from the current date_time
date_time operator-(const date_time_period_set& v) const;
/// add date_time_period_set v to the current date_time
date_time& operator+=(const date_time_period_set& v);
/// subtract date_time_period_set v from the current date_time
date_time& operator-=(const date_time_period_set& v);
/// roll current date_time forward by date_time_period_set v
date_time operator<<(const date_time_period_set& v) const;
/// roll current date_time backward by date_time_period_set v
date_time operator>>(const date_time_period_set& v) const;
/// roll current date_time forward by date_time_period_set v
date_time& operator<<=(const date_time_period_set& v);
/// roll current date_time backward by date_time_period_set v
date_time& operator>>=(const date_time_period_set& v);
/// Get POSIX time
///
/// The POSIX time is number of seconds since January 1st, 1970 00:00 UTC, ignoring leap seconds.
double time() const;
/// Set POSIX time
///
/// The POSIX time is number of seconds since January 1st, 1970 00:00 UTC, ignoring leap seconds.
/// This time can be fetched from Operating system clock using C function time, gettimeofday and others.
void time(double v);
/// Get the name of the associated timezone
std::string timezone() const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator==(const date_time& other) const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator!=(const date_time& other) const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator<(const date_time& other) const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator>(const date_time& other) const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator<=(const date_time& other) const;
/// compare date_time in the timeline (ignores difference in calendar, timezone etc)
bool operator>=(const date_time& other) const;
/// swaps two dates - efficient, does not throw
void swap(date_time& other) noexcept;
/// calculate the distance from this date_time to \a other in terms of periods \a f
int difference(const date_time& other, period::period_type f) const;
/// Get minimal possible value for *this time point for a period \a f.
int minimum(period::period_type f) const;
/// Get minimal possible value for *this time point for a period \a f. For example
/// in February maximum(day) may be 28 or 29, in January maximum(day)==31
int maximum(period::period_type f) const;
/// Check if *this time point is in daylight saving time
bool is_in_daylight_saving_time() const;
private:
hold_ptr<abstract_calendar> impl_;
};
inline void swap(date_time& left, date_time& right) noexcept
{
left.swap(right);
}
/// Writes date_time \a t to output stream \a out.
///
/// This function uses locale, calendar and time zone of the target stream \a in.
///
/// For example:
/// \code
/// date_time now(time(nullptr),hebrew_calendar)
/// std::cout << "Year: " << period::year(now) << " Full Date:" << now;
/// \endcode
///
/// The output may be Year:5770 Full Date:Jan 1, 2010
template<typename CharType>
std::basic_ostream<CharType>& operator<<(std::basic_ostream<CharType>& out, const date_time& t)
{
const double time_point = t.time();
ios_info& info = ios_info::get(out);
const uint64_t display_flags = info.display_flags();
if(as::detail::is_datetime_display_flags(display_flags)) {
out << time_point;
} else {
info.display_flags(flags::datetime);
out << time_point;
info.display_flags(display_flags);
}
return out;
}
/// Reads date_time \a t from output stream \a in
///
/// This function uses locale, calendar and time zone of the source stream \a in.
template<typename CharType>
std::basic_istream<CharType>& operator>>(std::basic_istream<CharType>& in, date_time& t)
{
double v;
const uint64_t display_flags = ios_info::get(in).display_flags();
if(as::detail::is_datetime_display_flags(display_flags)) {
in >> v;
} else {
ios_info::get(in).display_flags(flags::datetime);
in >> v;
ios_info::get(in).display_flags(display_flags);
}
if(!in.fail())
t.time(v);
return in;
}
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4512) // assignment operator could not be generated
#endif
/// \brief This class represents a period: a pair of two date_time objects.
///
/// It is generally used as syntactic sugar to calculate difference between two dates.
///
/// Note: it stores references to the original objects, so it is not recommended to be used
/// outside of the equation you calculate the difference in.
class date_time_duration {
public:
/// Create an object were \a first represents earlier point on time line and \a second is later
/// point.
date_time_duration(const date_time& first, const date_time& second) : s_(first), e_(second) {}
/// find a difference in terms of period_type \a f
int get(period::period_type f) const { return start().difference(end(), f); }
/// Syntactic sugar for get(f)
int operator/(period::period_type f) const { return start().difference(end(), f); }
/// Get starting point
const date_time& start() const { return s_; }
/// Get ending point
const date_time& end() const { return e_; }
private:
const date_time& s_;
const date_time& e_;
};
#ifdef BOOST_MSVC
# pragma warning(pop)
#endif
/// Calculates the difference between two dates, the left operand is a later point on time line.
/// Returns date_time_duration object.
inline date_time_duration operator-(const date_time& later, const date_time& earlier)
{
return date_time_duration(earlier, later);
}
namespace period {
/// Extract from date_time numerical value of Era i.e. AC, BC in Gregorian and Julian calendar, range [0,1]
inline int era(const date_time& dt)
{
return dt.get(era());
}
/// Extract from date_time numerical value of Year, it is calendar specific, for example 2011 in Gregorian
/// calendar.
inline int year(const date_time& dt)
{
return dt.get(year());
}
/// Extract from date_time numerical value of Extended year for Gregorian/Julian calendars, where 1 BC == 0, 2
/// BC == -1.
inline int extended_year(const date_time& dt)
{
return dt.get(extended_year());
}
/// Extract from date_time numerical value of The month of year, calendar specific, in Gregorian [0..11]
inline int month(const date_time& dt)
{
return dt.get(month());
}
/// Extract from date_time numerical value of The day of month, calendar specific, in Gregorian [1..31]
inline int day(const date_time& dt)
{
return dt.get(day());
}
/// Extract from date_time numerical value of The number of day in year, starting from 1, in Gregorian [1..366]
inline int day_of_year(const date_time& dt)
{
return dt.get(day_of_year());
}
/// Extract from date_time numerical value of Day of week, Sunday=1, Monday=2,..., Saturday=7.
///
/// Note that updating this value respects local day of week, so for example,
/// If first day of week is Monday and the current day is Tuesday then setting
/// the value to Sunday (1) would forward the date by 5 days forward and not backward
/// by two days as it could be expected if the numbers were taken as is.
inline int day_of_week(const date_time& dt)
{
return dt.get(day_of_week());
}
/// Extract from date_time numerical value of Original number of the day of the week in month. For example 1st
/// Sunday,
/// 2nd Sunday, etc. in Gregorian [1..5]
inline int day_of_week_in_month(const date_time& dt)
{
return dt.get(day_of_week_in_month());
}
/// Extract from date_time numerical value of Local day of week, for example in France Monday is 1, in US
/// Sunday is 1, [1..7]
inline int day_of_week_local(const date_time& dt)
{
return dt.get(day_of_week_local());
}
/// Extract from date_time numerical value of 24 clock hour [0..23]
inline int hour(const date_time& dt)
{
return dt.get(hour());
}
/// Extract from date_time numerical value of 12 clock hour [0..11]
inline int hour_12(const date_time& dt)
{
return dt.get(hour_12());
}
/// Extract from date_time numerical value of am or pm marker [0..1]
inline int am_pm(const date_time& dt)
{
return dt.get(am_pm());
}
/// Extract from date_time numerical value of minute [0..59]
inline int minute(const date_time& dt)
{
return dt.get(minute());
}
/// Extract from date_time numerical value of second [0..59]
inline int second(const date_time& dt)
{
return dt.get(second());
}
/// Extract from date_time numerical value of The week number in the year
inline int week_of_year(const date_time& dt)
{
return dt.get(week_of_year());
}
/// Extract from date_time numerical value of The week number within current month
inline int week_of_month(const date_time& dt)
{
return dt.get(week_of_month());
}
/// Extract from date_time numerical value of First day of week, constant, for example Sunday in US = 1, Monday
/// in France = 2
inline int first_day_of_week(const date_time& dt)
{
return dt.get(first_day_of_week());
}
/// Extract from date_time_duration numerical value of duration in Era i.e. AC, BC in Gregorian and Julian
/// calendar, range [0,1]
inline int era(const date_time_duration& dt)
{
return dt.get(era());
}
/// Extract from date_time_duration numerical value of duration in years
inline int year(const date_time_duration& dt)
{
return dt.get(year());
}
/// Extract from date_time_duration numerical value of duration in extended years (for Gregorian/Julian
/// calendars, where 1 BC == 0, 2 BC == -1).
inline int extended_year(const date_time_duration& dt)
{
return dt.get(extended_year());
}
/// Extract from date_time_duration numerical value of duration in months
inline int month(const date_time_duration& dt)
{
return dt.get(month());
}
/// Extract from date_time_duration numerical value of duration in days of month
inline int day(const date_time_duration& dt)
{
return dt.get(day());
}
/// Extract from date_time_duration numerical value of duration in days of year
inline int day_of_year(const date_time_duration& dt)
{
return dt.get(day_of_year());
}
/// Extract from date_time_duration numerical value of duration in days of week
inline int day_of_week(const date_time_duration& dt)
{
return dt.get(day_of_week());
}
/// Extract from date_time_duration numerical value of duration in original number of the day of the week in
/// month
inline int day_of_week_in_month(const date_time_duration& dt)
{
return dt.get(day_of_week_in_month());
}
/// Extract from date_time_duration numerical value of duration in local day of week
inline int day_of_week_local(const date_time_duration& dt)
{
return dt.get(day_of_week_local());
}
/// Extract from date_time_duration numerical value of duration in hours
inline int hour(const date_time_duration& dt)
{
return dt.get(hour());
}
/// Extract from date_time_duration numerical value of duration in 12 clock hours
inline int hour_12(const date_time_duration& dt)
{
return dt.get(hour_12());
}
/// Extract from date_time_duration numerical value of duration in am or pm markers
inline int am_pm(const date_time_duration& dt)
{
return dt.get(am_pm());
}
/// Extract from date_time_duration numerical value of duration in minutes
inline int minute(const date_time_duration& dt)
{
return dt.get(minute());
}
/// Extract from date_time_duration numerical value of duration in seconds
inline int second(const date_time_duration& dt)
{
return dt.get(second());
}
/// Extract from date_time_duration numerical value of duration in the week number in the year
inline int week_of_year(const date_time_duration& dt)
{
return dt.get(week_of_year());
}
/// Extract from date_time_duration numerical value of duration in The week number within current month
inline int week_of_month(const date_time_duration& dt)
{
return dt.get(week_of_month());
}
/// Extract from date_time_duration numerical value of duration in the first day of week
inline int first_day_of_week(const date_time_duration& dt)
{
return dt.get(first_day_of_week());
}
} // namespace period
/// @}
}} // namespace boost::locale
#ifdef BOOST_MSVC
# pragma warning(pop)
#endif
///
/// \example calendar.cpp
///
/// Example of using date_time functions for generating calendar for current year.
///
#endif
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