#ifndef DATE_TIME_TIME_CLOCK_HPP___

#define DATE_TIME_TIME_CLOCK_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 or http://www.boost.org/LICENSE-1.0)

 * Author: Jeff Garland, Bart Garst

 * $Date: 2005/03/19 21:39:59 $

 */

/*! @file time_clock.hpp

  This file contains the interface for clock devices.

*/

#include "boost/date_time/c_time.hpp"

#include "boost/shared_ptr.hpp"

namespace boost {

namespace date_time {

  //! A clock providing time level services based on C time_t capabilities

  /*! This clock provides resolution to the 1 second level

   */

  template<class time_type>

  class second_clock

  {

  public:

    typedef typename time_type::date_type date_type;

    typedef typename time_type::time_duration_type time_duration_type;

    static time_type local_time()

    {

      ::std::time_t t;

      ::std::time(&t);

      ::std::tm curr, *curr_ptr;

      //curr_ptr = ::std::localtime(&t);

      curr_ptr = c_time::localtime(&t, &curr);

      return create_time(curr_ptr);

    }

    //! Get the current day in universal date as a ymd_type

    static time_type universal_time()

    {

      ::std::time_t t;

      ::std::time(&t);

      ::std::tm curr, *curr_ptr;

      //curr_ptr = ::std::gmtime(&t);

      curr_ptr = c_time::gmtime(&t, &curr);

      return create_time(curr_ptr);

    }

    template<class time_zone_type>

    static time_type local_time(boost::shared_ptr<time_zone_type> tz_ptr)

    {

      typedef typename time_type::utc_time_type utc_time_type;

      utc_time_type utc_time = second_clock<utc_time_type>::universal_time();

      return time_type(utc_time, tz_ptr);

    }

  private:

    static time_type create_time(::std::tm* current)

    {

      date_type d(static_cast<unsigned short>(current->tm_year + 1900),

                  static_cast<unsigned short>(current->tm_mon + 1),

                  static_cast<unsigned short>(current->tm_mday));

      time_duration_type td(current->tm_hour,

                            current->tm_min,

                            current->tm_sec);

      return time_type(d,td);

    }

  };

} } //namespace date_time

#endif