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| author | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
| commit | 0efa7c32aaf21a29b42b5926cc116007056843be (patch) | |
| tree | 882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/date_time/dst_rules.hpp | |
| parent | 1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff) | |
| download | swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.tar.bz2 | |
Moved some modules into separate git modules.
Diffstat (limited to '3rdParty/Boost/boost/date_time/dst_rules.hpp')
| m--------- | 3rdParty/Boost | 0 | ||||
| -rw-r--r-- | 3rdParty/Boost/boost/date_time/dst_rules.hpp | 391 |
2 files changed, 0 insertions, 391 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/date_time/dst_rules.hpp b/3rdParty/Boost/boost/date_time/dst_rules.hpp deleted file mode 100644 index 20cb40b..0000000 --- a/3rdParty/Boost/boost/date_time/dst_rules.hpp +++ /dev/null @@ -1,391 +0,0 @@ -#ifndef DATE_TIME_DST_RULES_HPP__ -#define DATE_TIME_DST_RULES_HPP__ - -/* Copyright (c) 2002,2003, 2007 CrystalClear Software, Inc. - * Use, modification and distribution is subject to the - * Boost Software License, Version 1.0. (See accompanying - * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) - * Author: Jeff Garland, Bart Garst - * $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ - */ - -/*! @file dst_rules.hpp - Contains template class to provide static dst rule calculations -*/ - -#include "boost/date_time/date_generators.hpp" -#include "boost/date_time/period.hpp" -#include "boost/date_time/date_defs.hpp" -#include <stdexcept> - -namespace boost { - namespace date_time { - - enum time_is_dst_result {is_not_in_dst, is_in_dst, - ambiguous, invalid_time_label}; - - - //! Dynamic class used to caluclate dst transition information - template<class date_type_, - class time_duration_type_> - class dst_calculator - { - public: - typedef time_duration_type_ time_duration_type; - typedef date_type_ date_type; - - //! Check the local time offset when on dst start day - /*! On this dst transition, the time label between - * the transition boundary and the boudary + the offset - * are invalid times. If before the boundary then still - * not in dst. - *@param time_of_day Time offset in the day for the local time - *@param dst_start_offset_minutes Local day offset for start of dst - *@param dst_length_minutes Number of minutes to adjust clock forward - *@retval status of time label w.r.t. dst - */ - static time_is_dst_result - process_local_dst_start_day(const time_duration_type& time_of_day, - unsigned int dst_start_offset_minutes, - long dst_length_minutes) - { - //std::cout << "here" << std::endl; - if (time_of_day < time_duration_type(0,dst_start_offset_minutes,0)) { - return is_not_in_dst; - } - long offset = dst_start_offset_minutes + dst_length_minutes; - if (time_of_day >= time_duration_type(0,offset,0)) { - return is_in_dst; - } - return invalid_time_label; - } - - //! Check the local time offset when on the last day of dst - /*! This is the calculation for the DST end day. On that day times - * prior to the conversion time - dst_length (1 am in US) are still - * in dst. Times between the above and the switch time are - * ambiguous. Times after the start_offset are not in dst. - *@param time_of_day Time offset in the day for the local time - *@param dst_end_offset_minutes Local time of day for end of dst - *@retval status of time label w.r.t. dst - */ - static time_is_dst_result - process_local_dst_end_day(const time_duration_type& time_of_day, - unsigned int dst_end_offset_minutes, - long dst_length_minutes) - { - //in US this will be 60 so offset in day is 1,0,0 - int offset = dst_end_offset_minutes-dst_length_minutes; - if (time_of_day < time_duration_type(0,offset,0)) { - return is_in_dst; - } - if (time_of_day >= time_duration_type(0,dst_end_offset_minutes,0)) { - return is_not_in_dst; - } - return ambiguous; - } - - //! Calculates if the given local time is dst or not - /*! Determines if the time is really in DST or not. Also checks for - * invalid and ambiguous. - * @param current_day The day to check for dst - * @param time_of_day Time offset within the day to check - * @param dst_start_day Starting day of dst for the given locality - * @param dst_start_offset Time offset within day for dst boundary - * @param dst_end_day Ending day of dst for the given locality - * @param dst_end_offset Time offset within day given in dst for dst boundary - * @param dst_length lenght of dst adjusment - * @retval The time is either ambiguous, invalid, in dst, or not in dst - */ - static time_is_dst_result - local_is_dst(const date_type& current_day, - const time_duration_type& time_of_day, - const date_type& dst_start_day, - const time_duration_type& dst_start_offset, - const date_type& dst_end_day, - const time_duration_type& dst_end_offset, - const time_duration_type& dst_length_minutes) - { - unsigned int start_minutes = - dst_start_offset.hours() * 60 + dst_start_offset.minutes(); - unsigned int end_minutes = - dst_end_offset.hours() * 60 + dst_end_offset.minutes(); - long length_minutes = - dst_length_minutes.hours() * 60 + dst_length_minutes.minutes(); - - return local_is_dst(current_day, time_of_day, - dst_start_day, start_minutes, - dst_end_day, end_minutes, - length_minutes); - } - - //! Calculates if the given local time is dst or not - /*! Determines if the time is really in DST or not. Also checks for - * invalid and ambiguous. - * @param current_day The day to check for dst - * @param time_of_day Time offset within the day to check - * @param dst_start_day Starting day of dst for the given locality - * @param dst_start_offset_minutes Offset within day for dst - * boundary (eg 120 for US which is 02:00:00) - * @param dst_end_day Ending day of dst for the given locality - * @param dst_end_offset_minutes Offset within day given in dst for dst - * boundary (eg 120 for US which is 02:00:00) - * @param dst_length_minutes Length of dst adjusment (eg: 60 for US) - * @retval The time is either ambiguous, invalid, in dst, or not in dst - */ - static time_is_dst_result - local_is_dst(const date_type& current_day, - const time_duration_type& time_of_day, - const date_type& dst_start_day, - unsigned int dst_start_offset_minutes, - const date_type& dst_end_day, - unsigned int dst_end_offset_minutes, - long dst_length_minutes) - { - //in northern hemisphere dst is in the middle of the year - if (dst_start_day < dst_end_day) { - if ((current_day > dst_start_day) && (current_day < dst_end_day)) { - return is_in_dst; - } - if ((current_day < dst_start_day) || (current_day > dst_end_day)) { - return is_not_in_dst; - } - } - else {//southern hemisphere dst is at begining /end of year - if ((current_day < dst_start_day) && (current_day > dst_end_day)) { - return is_not_in_dst; - } - if ((current_day > dst_start_day) || (current_day < dst_end_day)) { - return is_in_dst; - } - } - - if (current_day == dst_start_day) { - return process_local_dst_start_day(time_of_day, - dst_start_offset_minutes, - dst_length_minutes); - } - - if (current_day == dst_end_day) { - return process_local_dst_end_day(time_of_day, - dst_end_offset_minutes, - dst_length_minutes); - } - //you should never reach this statement - return invalid_time_label; - } - - }; - - - //! Compile-time configurable daylight savings time calculation engine - /* This template provides the ability to configure a daylight savings - * calculation at compile time covering all the cases. Unfortunately - * because of the number of dimensions related to daylight savings - * calculation the number of parameters is high. In addition, the - * start and end transition rules are complex types that specify - * an algorithm for calculation of the starting day and ending - * day of daylight savings time including the month and day - * specifications (eg: last sunday in October). - * - * @param date_type A type that represents dates, typically gregorian::date - * @param time_duration_type Used for the offset in the day calculations - * @param dst_traits A set of traits that define the rules of dst - * calculation. The dst_trait must include the following: - * start_rule_functor - Rule to calculate the starting date of a - * dst transition (eg: last_kday_of_month). - * start_day - static function that returns month of dst start for - * start_rule_functor - * start_month -static function that returns day or day of week for - * dst start of dst - * end_rule_functor - Rule to calculate the end of dst day. - * end_day - static fucntion that returns end day for end_rule_functor - * end_month - static function that returns end month for end_rule_functor - * dst_start_offset_minutes - number of minutes from start of day to transition to dst -- 120 (or 2:00 am) is typical for the U.S. and E.U. - * dst_start_offset_minutes - number of minutes from start of day to transition off of dst -- 180 (or 3:00 am) is typical for E.U. - * dst_length_minutes - number of minutes that dst shifts clock - */ - template<class date_type, - class time_duration_type, - class dst_traits> - class dst_calc_engine - { - public: - typedef typename date_type::year_type year_type; - typedef typename date_type::calendar_type calendar_type; - typedef dst_calculator<date_type, time_duration_type> dstcalc; - - //! Calculates if the given local time is dst or not - /*! Determines if the time is really in DST or not. Also checks for - * invalid and ambiguous. - * @retval The time is either ambiguous, invalid, in dst, or not in dst - */ - static time_is_dst_result local_is_dst(const date_type& d, - const time_duration_type& td) - { - - year_type y = d.year(); - date_type dst_start = local_dst_start_day(y); - date_type dst_end = local_dst_end_day(y); - return dstcalc::local_is_dst(d,td, - dst_start, - dst_traits::dst_start_offset_minutes(), - dst_end, - dst_traits::dst_end_offset_minutes(), - dst_traits::dst_shift_length_minutes()); - - } - - static bool is_dst_boundary_day(date_type d) - { - year_type y = d.year(); - return ((d == local_dst_start_day(y)) || - (d == local_dst_end_day(y))); - } - - //! The time of day for the dst transition (eg: typically 01:00:00 or 02:00:00) - static time_duration_type dst_offset() - { - return time_duration_type(0,dst_traits::dst_shift_length_minutes(),0); - } - - static date_type local_dst_start_day(year_type year) - { - return dst_traits::local_dst_start_day(year); - } - - static date_type local_dst_end_day(year_type year) - { - return dst_traits::local_dst_end_day(year); - } - - - }; - - //! Depricated: Class to calculate dst boundaries for US time zones - /* Use dst_calc_engine instead. - * In 2007 US/Canada DST rules changed - * (http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005#Change_to_daylight_saving_time). - */ - template<class date_type_, - class time_duration_type_, - unsigned int dst_start_offset_minutes=120, //from start of day - short dst_length_minutes=60> //1 hour == 60 min in US - class us_dst_rules - { - public: - typedef time_duration_type_ time_duration_type; - typedef date_type_ date_type; - typedef typename date_type::year_type year_type; - typedef typename date_type::calendar_type calendar_type; - typedef date_time::last_kday_of_month<date_type> lkday; - typedef date_time::first_kday_of_month<date_type> fkday; - typedef date_time::nth_kday_of_month<date_type> nkday; - typedef dst_calculator<date_type, time_duration_type> dstcalc; - - //! Calculates if the given local time is dst or not - /*! Determines if the time is really in DST or not. Also checks for - * invalid and ambiguous. - * @retval The time is either ambiguous, invalid, in dst, or not in dst - */ - static time_is_dst_result local_is_dst(const date_type& d, - const time_duration_type& td) - { - - year_type y = d.year(); - date_type dst_start = local_dst_start_day(y); - date_type dst_end = local_dst_end_day(y); - return dstcalc::local_is_dst(d,td, - dst_start,dst_start_offset_minutes, - dst_end, dst_start_offset_minutes, - dst_length_minutes); - - } - - - static bool is_dst_boundary_day(date_type d) - { - year_type y = d.year(); - return ((d == local_dst_start_day(y)) || - (d == local_dst_end_day(y))); - } - - static date_type local_dst_start_day(year_type year) - { - if (year >= year_type(2007)) { - //second sunday in march - nkday ssim(nkday::second, Sunday, gregorian::Mar); - return ssim.get_date(year); - } else { - //first sunday in april - fkday fsia(Sunday, gregorian::Apr); - return fsia.get_date(year); - } - } - - static date_type local_dst_end_day(year_type year) - { - if (year >= year_type(2007)) { - //first sunday in november - fkday fsin(Sunday, gregorian::Nov); - return fsin.get_date(year); - } else { - //last sunday in october - lkday lsio(Sunday, gregorian::Oct); - return lsio.get_date(year); - } - } - - static time_duration_type dst_offset() - { - return time_duration_type(0,dst_length_minutes,0); - } - - private: - - - }; - - //! Used for local time adjustments in places that don't use dst - template<class date_type_, class time_duration_type_> - class null_dst_rules - { - public: - typedef time_duration_type_ time_duration_type; - typedef date_type_ date_type; - - - //! Calculates if the given local time is dst or not - /*! @retval Always is_not_in_dst since this is for zones without dst - */ - static time_is_dst_result local_is_dst(const date_type&, - const time_duration_type&) - { - return is_not_in_dst; - } - - //! Calculates if the given utc time is in dst - static time_is_dst_result utc_is_dst(const date_type&, - const time_duration_type&) - { - return is_not_in_dst; - } - - static bool is_dst_boundary_day(date_type d) - { - return false; - } - - static time_duration_type dst_offset() - { - return time_duration_type(0,0,0); - } - - }; - - - } } //namespace date_time - - - -#endif |