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| author | Remko Tronçon <git@el-tramo.be> | 2012-08-10 17:52:35 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2012-08-10 17:52:35 (GMT) |
| commit | ad83ce80cb21254fba2db6f626c65140fabd0145 (patch) | |
| tree | b03ad7c67a65f598a373766a2488e884943e614a /3rdParty/Boost/src/boost/date_time | |
| parent | 8e11206adcdff6f7781b4f12bac6eeb8c3cba65a (diff) | |
| download | swift-contrib-ad83ce80cb21254fba2db6f626c65140fabd0145.zip swift-contrib-ad83ce80cb21254fba2db6f626c65140fabd0145.tar.bz2 | |
Added boost/date_time/c_local_time_adjustor.hpp.
Diffstat (limited to '3rdParty/Boost/src/boost/date_time')
| -rw-r--r-- | 3rdParty/Boost/src/boost/date_time/c_local_time_adjustor.hpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/date_time/c_local_time_adjustor.hpp b/3rdParty/Boost/src/boost/date_time/c_local_time_adjustor.hpp new file mode 100644 index 0000000..f802582 --- /dev/null +++ b/3rdParty/Boost/src/boost/date_time/c_local_time_adjustor.hpp @@ -0,0 +1,66 @@ +#ifndef DATE_TIME_C_LOCAL_TIME_ADJUSTOR_HPP__ +#define DATE_TIME_C_LOCAL_TIME_ADJUSTOR_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: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $ + */ + +/*! @file c_local_time_adjustor.hpp + Time adjustment calculations based on machine +*/ + +#include <stdexcept> +#include <boost/throw_exception.hpp> +#include <boost/date_time/compiler_config.hpp> +#include <boost/date_time/c_time.hpp> + +namespace boost { +namespace date_time { + + //! Adjust to / from utc using the C API + /*! Warning!!! This class assumes that timezone settings of the + * machine are correct. This can be a very dangerous assumption. + */ + template<class time_type> + class c_local_adjustor { + public: + typedef typename time_type::time_duration_type time_duration_type; + typedef typename time_type::date_type date_type; + typedef typename date_type::duration_type date_duration_type; + //! Convert a utc time to local time + static time_type utc_to_local(const time_type& t) + { + date_type time_t_start_day(1970,1,1); + time_type time_t_start_time(time_t_start_day,time_duration_type(0,0,0)); + if (t < time_t_start_time) { + boost::throw_exception(std::out_of_range("Cannot convert dates prior to Jan 1, 1970")); + BOOST_DATE_TIME_UNREACHABLE_EXPRESSION(return time_t_start_time); // should never reach + } + date_duration_type dd = t.date() - time_t_start_day; + time_duration_type td = t.time_of_day(); + std::time_t t2 = dd.days()*86400 + td.hours()*3600 + td.minutes()*60 + td.seconds(); + std::tm tms, *tms_ptr; + tms_ptr = c_time::localtime(&t2, &tms); + date_type d(static_cast<unsigned short>(tms_ptr->tm_year + 1900), + static_cast<unsigned short>(tms_ptr->tm_mon + 1), + static_cast<unsigned short>(tms_ptr->tm_mday)); + time_duration_type td2(tms_ptr->tm_hour, + tms_ptr->tm_min, + tms_ptr->tm_sec, + t.time_of_day().fractional_seconds()); + + return time_type(d,td2); + } + }; + + + +} } //namespace date_time + + + +#endif |