You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
94 lines
3.1 KiB
94 lines
3.1 KiB
#ifndef POSIX_TIME_CONVERSION_HPP___ |
|
#define POSIX_TIME_CONVERSION_HPP___ |
|
|
|
/* Copyright (c) 2002-2005 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: 2010-06-09 14:10:13 -0400 (Wed, 09 Jun 2010) $ |
|
*/ |
|
|
|
#include <cstring> |
|
#include <boost/date_time/posix_time/ptime.hpp> |
|
#include <boost/date_time/posix_time/posix_time_duration.hpp> |
|
#include <boost/date_time/filetime_functions.hpp> |
|
#include <boost/date_time/c_time.hpp> |
|
#include <boost/date_time/time_resolution_traits.hpp> // absolute_value |
|
#include <boost/date_time/gregorian/conversion.hpp> |
|
|
|
namespace boost { |
|
|
|
namespace posix_time { |
|
|
|
|
|
//! Function that converts a time_t into a ptime. |
|
inline |
|
ptime from_time_t(std::time_t t) |
|
{ |
|
ptime start(gregorian::date(1970,1,1)); |
|
return start + seconds(static_cast<long>(t)); |
|
} |
|
|
|
//! Convert a time to a tm structure truncating any fractional seconds |
|
inline |
|
std::tm to_tm(const boost::posix_time::ptime& t) { |
|
std::tm timetm = boost::gregorian::to_tm(t.date()); |
|
boost::posix_time::time_duration td = t.time_of_day(); |
|
timetm.tm_hour = td.hours(); |
|
timetm.tm_min = td.minutes(); |
|
timetm.tm_sec = td.seconds(); |
|
timetm.tm_isdst = -1; // -1 used when dst info is unknown |
|
return timetm; |
|
} |
|
//! Convert a time_duration to a tm structure truncating any fractional seconds and zeroing fields for date components |
|
inline |
|
std::tm to_tm(const boost::posix_time::time_duration& td) { |
|
std::tm timetm; |
|
std::memset(&timetm, 0, sizeof(timetm)); |
|
timetm.tm_hour = date_time::absolute_value(td.hours()); |
|
timetm.tm_min = date_time::absolute_value(td.minutes()); |
|
timetm.tm_sec = date_time::absolute_value(td.seconds()); |
|
timetm.tm_isdst = -1; // -1 used when dst info is unknown |
|
return timetm; |
|
} |
|
|
|
//! Convert a tm struct to a ptime ignoring is_dst flag |
|
inline |
|
ptime ptime_from_tm(const std::tm& timetm) { |
|
boost::gregorian::date d = boost::gregorian::date_from_tm(timetm); |
|
return ptime(d, time_duration(timetm.tm_hour, timetm.tm_min, timetm.tm_sec)); |
|
} |
|
|
|
|
|
#if defined(BOOST_HAS_FTIME) |
|
|
|
//! Function to create a time object from an initialized FILETIME struct. |
|
/*! Function to create a time object from an initialized FILETIME struct. |
|
* A FILETIME struct holds 100-nanosecond units (0.0000001). When |
|
* built with microsecond resolution the FILETIME's sub second value |
|
* will be truncated. Nanosecond resolution has no truncation. |
|
* |
|
* \note FILETIME is part of the Win32 API, so it is not portable to non-windows |
|
* platforms. |
|
* |
|
* \note The function is templated on the FILETIME type, so that |
|
* it can be used with both native FILETIME and the ad-hoc |
|
* boost::date_time::winapi::file_time type. |
|
*/ |
|
template< typename TimeT, typename FileTimeT > |
|
inline |
|
TimeT from_ftime(const FileTimeT& ft) |
|
{ |
|
return boost::date_time::time_from_ftime<TimeT>(ft); |
|
} |
|
|
|
#endif // BOOST_HAS_FTIME |
|
|
|
} } //namespace boost::posix_time |
|
|
|
|
|
|
|
|
|
#endif |
|
|
|
|