1 #ifndef DATE_TIME_TIME_CLOCK_HPP___
2 #define DATE_TIME_TIME_CLOCK_HPP___
3 
4 /* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
5  * Use, modification and distribution is subject to the
6  * Boost Software License, Version 1.0. (See accompanying
7  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
8  * Author: Jeff Garland, Bart Garst
9  * $Date$
10  */
11 
12 /*! @file time_clock.hpp
13   This file contains the interface for clock devices.
14 */
15 
16 #include "boost/date_time/c_time.hpp"
17 #include "boost/shared_ptr.hpp"
18 
19 namespace boost {
20 namespace date_time {
21 
22 
23   //! A clock providing time level services based on C time_t capabilities
24   /*! This clock provides resolution to the 1 second level
25    */
26   template<class time_type>
27   class second_clock
28   {
29   public:
30     typedef typename time_type::date_type date_type;
31     typedef typename time_type::time_duration_type time_duration_type;
32 
local_time()33     static time_type local_time()
34     {
35       ::std::time_t t;
36       ::std::time(&t);
37       ::std::tm curr, *curr_ptr;
38       //curr_ptr = ::std::localtime(&t);
39       curr_ptr = c_time::localtime(&t, &curr);
40       return create_time(curr_ptr);
41     }
42 
43 
44     //! Get the current day in universal date as a ymd_type
universal_time()45     static time_type universal_time()
46     {
47 
48       ::std::time_t t;
49       ::std::time(&t);
50       ::std::tm curr, *curr_ptr;
51       //curr_ptr = ::std::gmtime(&t);
52       curr_ptr = c_time::gmtime(&t, &curr);
53       return create_time(curr_ptr);
54     }
55 
56     template<class time_zone_type>
local_time(boost::shared_ptr<time_zone_type> tz_ptr)57     static time_type local_time(boost::shared_ptr<time_zone_type> tz_ptr)
58     {
59       typedef typename time_type::utc_time_type utc_time_type;
60       utc_time_type utc_time = second_clock<utc_time_type>::universal_time();
61       return time_type(utc_time, tz_ptr);
62     }
63 
64 
65   private:
create_time(::std::tm * current)66     static time_type create_time(::std::tm* current)
67     {
68       date_type d(static_cast<unsigned short>(current->tm_year + 1900),
69                   static_cast<unsigned short>(current->tm_mon + 1),
70                   static_cast<unsigned short>(current->tm_mday));
71       time_duration_type td(current->tm_hour,
72                             current->tm_min,
73                             current->tm_sec);
74       return time_type(d,td);
75     }
76 
77   };
78 
79 
80 } } //namespace date_time
81 
82 
83 #endif
84