202 lines
6.8 KiB
C++
202 lines
6.8 KiB
C++
#ifndef POSIX_TIME_SERIALIZE_HPP___
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#define POSIX_TIME_SERIALIZE_HPP___
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/* Copyright (c) 2004-2005 CrystalClear Software, Inc.
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* Use, modification and distribution is subject to the
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* Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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* Author: Jeff Garland, Bart Garst
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* $Date: 2011-11-13 01:10:55 -0500 (Sun, 13 Nov 2011) $
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*/
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#include "boost/date_time/posix_time/posix_time.hpp"
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#include "boost/date_time/gregorian/greg_serialize.hpp"
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#include "boost/serialization/split_free.hpp"
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#include "boost/serialization/nvp.hpp"
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// macros to split serialize functions into save & load functions
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// NOTE: these macros define template functions in the boost::serialization namespace.
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// They must be expanded *outside* of any namespace
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BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::ptime)
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BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_duration)
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BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_period)
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namespace boost {
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namespace serialization {
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/*** time_duration ***/
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//! Function to save posix_time::time_duration objects using serialization lib
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/*! time_duration objects are broken down into 4 parts for serialization:
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* types are hour_type, min_type, sec_type, and fractional_seconds_type
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* as defined in the time_duration class
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*/
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template<class Archive>
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void save(Archive & ar,
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const posix_time::time_duration& td,
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unsigned int /*version*/)
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{
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// serialize a bool so we know how to read this back in later
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bool is_special = td.is_special();
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ar & make_nvp("is_special", is_special);
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if(is_special) {
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std::string s = to_simple_string(td);
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ar & make_nvp("sv_time_duration", s);
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}
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else {
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posix_time::time_duration::hour_type h = td.hours();
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posix_time::time_duration::min_type m = td.minutes();
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posix_time::time_duration::sec_type s = td.seconds();
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posix_time::time_duration::fractional_seconds_type fs = td.fractional_seconds();
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ar & make_nvp("time_duration_hours", h);
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ar & make_nvp("time_duration_minutes", m);
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ar & make_nvp("time_duration_seconds", s);
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ar & make_nvp("time_duration_fractional_seconds", fs);
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}
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}
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//! Function to load posix_time::time_duration objects using serialization lib
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/*! time_duration objects are broken down into 4 parts for serialization:
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* types are hour_type, min_type, sec_type, and fractional_seconds_type
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* as defined in the time_duration class
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*/
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template<class Archive>
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void load(Archive & ar,
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posix_time::time_duration & td,
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unsigned int /*version*/)
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{
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bool is_special = false;
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ar & make_nvp("is_special", is_special);
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if(is_special) {
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std::string s;
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ar & make_nvp("sv_time_duration", s);
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posix_time::special_values sv = gregorian::special_value_from_string(s);
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td = posix_time::time_duration(sv);
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}
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else {
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posix_time::time_duration::hour_type h(0);
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posix_time::time_duration::min_type m(0);
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posix_time::time_duration::sec_type s(0);
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posix_time::time_duration::fractional_seconds_type fs(0);
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ar & make_nvp("time_duration_hours", h);
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ar & make_nvp("time_duration_minutes", m);
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ar & make_nvp("time_duration_seconds", s);
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ar & make_nvp("time_duration_fractional_seconds", fs);
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td = posix_time::time_duration(h,m,s,fs);
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}
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}
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// no load_construct_data function provided as time_duration provides a
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// default constructor
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/*** ptime ***/
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//! Function to save posix_time::ptime objects using serialization lib
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/*! ptime objects are broken down into 2 parts for serialization:
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* a date object and a time_duration onject
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*/
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template<class Archive>
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void save(Archive & ar,
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const posix_time::ptime& pt,
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unsigned int /*version*/)
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{
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// from_iso_string does not include fractional seconds
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// therefore date and time_duration are used
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posix_time::ptime::date_type d = pt.date();
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ar & make_nvp("ptime_date", d);
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if(!pt.is_special()) {
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posix_time::ptime::time_duration_type td = pt.time_of_day();
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ar & make_nvp("ptime_time_duration", td);
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}
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}
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//! Function to load posix_time::ptime objects using serialization lib
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/*! ptime objects are broken down into 2 parts for serialization:
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* a date object and a time_duration onject
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*/
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template<class Archive>
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void load(Archive & ar,
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posix_time::ptime & pt,
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unsigned int /*version*/)
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{
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// from_iso_string does not include fractional seconds
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// therefore date and time_duration are used
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posix_time::ptime::date_type d(posix_time::not_a_date_time);
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posix_time::ptime::time_duration_type td;
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ar & make_nvp("ptime_date", d);
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if(!d.is_special()) {
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ar & make_nvp("ptime_time_duration", td);
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pt = boost::posix_time::ptime(d,td);
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}
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else {
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pt = boost::posix_time::ptime(d.as_special());
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}
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}
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//!override needed b/c no default constructor
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template<class Archive>
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inline void load_construct_data(Archive & /*ar*/,
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posix_time::ptime* pt,
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const unsigned int /*file_version*/)
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{
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// retrieve data from archive required to construct new
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// invoke inplace constructor to initialize instance of date
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new(pt) boost::posix_time::ptime(boost::posix_time::not_a_date_time);
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}
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/*** time_period ***/
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//! Function to save posix_time::time_period objects using serialization lib
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/*! time_period objects are broken down into 2 parts for serialization:
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* a begining ptime object and an ending ptime object
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*/
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template<class Archive>
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void save(Archive & ar,
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const posix_time::time_period& tp,
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unsigned int /*version*/)
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{
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posix_time::ptime beg(tp.begin().date(), tp.begin().time_of_day());
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posix_time::ptime end(tp.end().date(), tp.end().time_of_day());
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ar & make_nvp("time_period_begin", beg);
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ar & make_nvp("time_period_end", end);
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}
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//! Function to load posix_time::time_period objects using serialization lib
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/*! time_period objects are broken down into 2 parts for serialization:
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* a begining ptime object and an ending ptime object
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*/
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template<class Archive>
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void load(Archive & ar,
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boost::posix_time::time_period & tp,
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unsigned int /*version*/)
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{
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posix_time::time_duration td(1,0,0);
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gregorian::date d(gregorian::not_a_date_time);
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posix_time::ptime beg(d,td);
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posix_time::ptime end(d,td);
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ar & make_nvp("time_period_begin", beg);
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ar & make_nvp("time_period_end", end);
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tp = boost::posix_time::time_period(beg, end);
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}
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//!override needed b/c no default constructor
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template<class Archive>
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inline void load_construct_data(Archive & ar,
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boost::posix_time::time_period* tp,
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const unsigned int /*file_version*/)
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{
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posix_time::time_duration td(1,0,0);
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gregorian::date d(gregorian::not_a_date_time);
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posix_time::ptime beg(d,td);
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posix_time::ptime end(d,td);
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new(tp) boost::posix_time::time_period(beg,end);
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}
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} // namespace serialization
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} // namespace boost
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#endif
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