[857] | 1 | #ifndef DATE_CLOCK_DEVICE_HPP___
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| 2 | #define DATE_CLOCK_DEVICE_HPP___
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| 3 |
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| 4 | /* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
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| 5 | * Use, modification and distribution is subject to the
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| 6 | * Boost Software License, Version 1.0. (See accompanying
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| 7 | * file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
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| 8 | * Author: Jeff Garland, Bart Garst
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| 9 | * $Date: 2005/03/19 21:39:59 $
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| 10 | */
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| 11 |
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| 12 | #include "boost/date_time/c_time.hpp"
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| 13 |
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| 14 |
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| 15 | namespace boost {
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| 16 | namespace date_time {
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| 17 |
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| 18 | //! A clock providing day level services based on C time_t capabilities
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| 19 | /*! This clock uses Posix interfaces as its implementation and hence
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| 20 | * uses the timezone settings of the operating system. Incorrect
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| 21 | * user settings will result in incorrect results for the calls
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| 22 | * to local_day.
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| 23 | */
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| 24 | template<class date_type>
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| 25 | class day_clock
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| 26 | {
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| 27 | public:
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| 28 | typedef typename date_type::ymd_type ymd_type;
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| 29 | //! Get the local day as a date type
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| 30 | static date_type local_day()
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| 31 | {
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| 32 | return date_type(local_day_ymd());
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| 33 | }
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| 34 | //! Get the local day as a ymd_type
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| 35 | static typename date_type::ymd_type local_day_ymd()
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| 36 | {
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| 37 | ::std::tm result;
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| 38 | ::std::tm* curr = get_local_time(result);
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| 39 | return ymd_type(curr->tm_year + 1900,
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| 40 | curr->tm_mon + 1,
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| 41 | curr->tm_mday);
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| 42 | }
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| 43 | //! Get the current day in universal date as a ymd_type
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| 44 | static typename date_type::ymd_type universal_day_ymd()
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| 45 | {
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| 46 | ::std::tm result;
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| 47 | ::std::tm* curr = get_universal_time(result);
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| 48 | return ymd_type(curr->tm_year + 1900,
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| 49 | curr->tm_mon + 1,
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| 50 | curr->tm_mday);
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| 51 | }
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| 52 | //! Get the UTC day as a date type
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| 53 | static date_type universal_day()
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| 54 | {
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| 55 | return date_type(universal_day_ymd());
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| 56 | }
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| 57 |
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| 58 | private:
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| 59 | static ::std::tm* get_local_time(std::tm& result)
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| 60 | {
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| 61 | ::std::time_t t;
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| 62 | ::std::time(&t);
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| 63 | return c_time::localtime(&t, &result);
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| 64 | }
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| 65 | static ::std::tm* get_universal_time(std::tm& result)
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| 66 | {
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| 67 | ::std::time_t t;
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| 68 | ::std::time(&t);
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| 69 | return c_time::gmtime(&t, &result);
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| 70 | }
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| 71 |
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| 72 | };
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| 73 |
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| 74 | } } //namespace date_time
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| 75 |
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| 76 |
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| 77 | #endif
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