| #ifndef DATE_CLOCK_DEVICE_HPP___ |
| #define DATE_CLOCK_DEVICE_HPP___ |
| |
| /* Copyright (c) 2002,2003,2005 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) $ |
| */ |
| |
| #include "boost/date_time/c_time.hpp" |
| |
| |
| namespace boost { |
| namespace date_time { |
| |
| //! A clock providing day level services based on C time_t capabilities |
| /*! This clock uses Posix interfaces as its implementation and hence |
| * uses the timezone settings of the operating system. Incorrect |
| * user settings will result in incorrect results for the calls |
| * to local_day. |
| */ |
| template<class date_type> |
| class day_clock |
| { |
| public: |
| typedef typename date_type::ymd_type ymd_type; |
| //! Get the local day as a date type |
| static date_type local_day() |
| { |
| return date_type(local_day_ymd()); |
| } |
| //! Get the local day as a ymd_type |
| static typename date_type::ymd_type local_day_ymd() |
| { |
| ::std::tm result; |
| ::std::tm* curr = get_local_time(result); |
| return ymd_type(curr->tm_year + 1900, |
| curr->tm_mon + 1, |
| curr->tm_mday); |
| } |
| //! Get the current day in universal date as a ymd_type |
| static typename date_type::ymd_type universal_day_ymd() |
| { |
| ::std::tm result; |
| ::std::tm* curr = get_universal_time(result); |
| return ymd_type(curr->tm_year + 1900, |
| curr->tm_mon + 1, |
| curr->tm_mday); |
| } |
| //! Get the UTC day as a date type |
| static date_type universal_day() |
| { |
| return date_type(universal_day_ymd()); |
| } |
| |
| private: |
| static ::std::tm* get_local_time(std::tm& result) |
| { |
| ::std::time_t t; |
| ::std::time(&t); |
| return c_time::localtime(&t, &result); |
| } |
| static ::std::tm* get_universal_time(std::tm& result) |
| { |
| ::std::time_t t; |
| ::std::time(&t); |
| return c_time::gmtime(&t, &result); |
| } |
| |
| }; |
| |
| } } //namespace date_time |
| |
| |
| #endif |