Chris@16: #ifndef DATE_CLOCK_DEVICE_HPP___
Chris@16: #define DATE_CLOCK_DEVICE_HPP___
Chris@16: 
Chris@16: /* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
Chris@16:  * Use, modification and distribution is subject to the 
Chris@16:  * Boost Software License, Version 1.0. (See accompanying
Chris@16:  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  * Author: Jeff Garland, Bart Garst
Chris@101:  * $Date$
Chris@16:  */
Chris@16: 
Chris@16: #include "boost/date_time/c_time.hpp"
Chris@16: 
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace date_time {
Chris@16: 
Chris@16:   //! A clock providing day level services based on C time_t capabilities
Chris@16:   /*! This clock uses Posix interfaces as its implementation and hence
Chris@16:    *  uses the timezone settings of the operating system.  Incorrect
Chris@16:    *  user settings will result in incorrect results for the calls
Chris@16:    *  to local_day.
Chris@16:    */
Chris@16:   template<class date_type> 
Chris@16:   class day_clock
Chris@16:   {
Chris@16:   public:
Chris@16:     typedef typename date_type::ymd_type ymd_type;
Chris@16:     //! Get the local day as a date type
Chris@16:     static date_type local_day() 
Chris@16:     {
Chris@16:       return date_type(local_day_ymd());
Chris@16:     }
Chris@16:     //! Get the local day as a ymd_type
Chris@16:     static typename date_type::ymd_type local_day_ymd() 
Chris@16:     {
Chris@16:       ::std::tm result;
Chris@16:       ::std::tm* curr = get_local_time(result);
Chris@101:       return ymd_type(static_cast<unsigned short>(curr->tm_year + 1900),
Chris@101:                       static_cast<unsigned short>(curr->tm_mon + 1),
Chris@101:                       static_cast<unsigned short>(curr->tm_mday));
Chris@16:     }
Chris@16:     //! Get the current day in universal date as a ymd_type
Chris@16:     static typename date_type::ymd_type universal_day_ymd() 
Chris@16:     {
Chris@16:       ::std::tm result;
Chris@16:       ::std::tm* curr = get_universal_time(result);
Chris@101:       return ymd_type(static_cast<unsigned short>(curr->tm_year + 1900),
Chris@101:                       static_cast<unsigned short>(curr->tm_mon + 1),
Chris@101:                       static_cast<unsigned short>(curr->tm_mday));
Chris@16:     }
Chris@16:     //! Get the UTC day as a date type
Chris@16:     static date_type universal_day() 
Chris@16:     {
Chris@16:       return date_type(universal_day_ymd());
Chris@16:     }
Chris@16: 
Chris@16:   private:
Chris@16:     static ::std::tm* get_local_time(std::tm& result) 
Chris@16:     {
Chris@16:       ::std::time_t t;
Chris@16:       ::std::time(&t);
Chris@16:       return c_time::localtime(&t, &result);
Chris@16:     }
Chris@16:     static ::std::tm* get_universal_time(std::tm& result) 
Chris@16:     {
Chris@16:       ::std::time_t t;
Chris@16:       ::std::time(&t);
Chris@16:       return c_time::gmtime(&t, &result);
Chris@16:     }
Chris@16: 
Chris@16:   };
Chris@16: 
Chris@16: } } //namespace date_time
Chris@16: 
Chris@16: 
Chris@16: #endif