Chris@16: #ifndef POSIX_TIME_SERIALIZE_HPP___
Chris@16: #define POSIX_TIME_SERIALIZE_HPP___
Chris@16: 
Chris@16: /* Copyright (c) 2004-2005 CrystalClear Software, Inc.
Chris@16:  * Use, modification and distribution is subject to the 
Chris@16:  * Boost Software License, Version 1.0. (See accompanying
Chris@16:  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  * Author: Jeff Garland, Bart Garst
Chris@101:  * $Date$
Chris@16:  */
Chris@16: 
Chris@16: #include "boost/date_time/posix_time/posix_time.hpp"
Chris@16: #include "boost/date_time/gregorian/greg_serialize.hpp"
Chris@16: #include "boost/serialization/split_free.hpp"
Chris@16: #include "boost/serialization/nvp.hpp"
Chris@16: 
Chris@16: 
Chris@16: // macros to split serialize functions into save & load functions
Chris@16: // NOTE: these macros define template functions in the boost::serialization namespace.
Chris@16: // They must be expanded *outside* of any namespace
Chris@16: BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::ptime)
Chris@16: BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_duration)
Chris@16: BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_period)
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace serialization {
Chris@16: 
Chris@16: 
Chris@16: /*** time_duration ***/
Chris@16: 
Chris@16: //! Function to save posix_time::time_duration objects using serialization lib
Chris@16: /*! time_duration objects are broken down into 4 parts for serialization:
Chris@16:  * types are hour_type, min_type, sec_type, and fractional_seconds_type
Chris@16:  * as defined in the time_duration class
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void save(Archive & ar, 
Chris@16:           const posix_time::time_duration& td, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   // serialize a bool so we know how to read this back in later
Chris@16:   bool is_special = td.is_special();
Chris@16:   ar & make_nvp("is_special", is_special);
Chris@16:   if(is_special) {
Chris@16:     std::string s = to_simple_string(td);
Chris@16:     ar & make_nvp("sv_time_duration", s);
Chris@16:   }
Chris@16:   else {
Chris@16:     posix_time::time_duration::hour_type h = td.hours();
Chris@16:     posix_time::time_duration::min_type m = td.minutes();
Chris@16:     posix_time::time_duration::sec_type s = td.seconds();
Chris@16:     posix_time::time_duration::fractional_seconds_type fs = td.fractional_seconds();
Chris@16:     ar & make_nvp("time_duration_hours", h);
Chris@16:     ar & make_nvp("time_duration_minutes", m);
Chris@16:     ar & make_nvp("time_duration_seconds", s);
Chris@16:     ar & make_nvp("time_duration_fractional_seconds", fs);
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: //! Function to load posix_time::time_duration objects using serialization lib
Chris@16: /*! time_duration objects are broken down into 4 parts for serialization:
Chris@16:  * types are hour_type, min_type, sec_type, and fractional_seconds_type
Chris@16:  * as defined in the time_duration class
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void load(Archive & ar, 
Chris@16:           posix_time::time_duration & td, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   bool is_special = false;
Chris@16:   ar & make_nvp("is_special", is_special);
Chris@16:   if(is_special) {
Chris@16:     std::string s;
Chris@16:     ar & make_nvp("sv_time_duration", s);
Chris@16:     posix_time::special_values sv = gregorian::special_value_from_string(s);
Chris@16:     td = posix_time::time_duration(sv);
Chris@16:   }
Chris@16:   else {
Chris@16:     posix_time::time_duration::hour_type h(0);
Chris@16:     posix_time::time_duration::min_type m(0);
Chris@16:     posix_time::time_duration::sec_type s(0);
Chris@16:     posix_time::time_duration::fractional_seconds_type fs(0);
Chris@16:     ar & make_nvp("time_duration_hours", h);
Chris@16:     ar & make_nvp("time_duration_minutes", m);
Chris@16:     ar & make_nvp("time_duration_seconds", s);
Chris@16:     ar & make_nvp("time_duration_fractional_seconds", fs);
Chris@16:     td = posix_time::time_duration(h,m,s,fs);
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: // no load_construct_data function provided as time_duration provides a
Chris@16: // default constructor
Chris@16: 
Chris@16: /*** ptime ***/
Chris@16: 
Chris@16: //! Function to save posix_time::ptime objects using serialization lib
Chris@16: /*! ptime objects are broken down into 2 parts for serialization:
Chris@16:  * a date object and a time_duration onject
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void save(Archive & ar, 
Chris@16:           const posix_time::ptime& pt, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   // from_iso_string does not include fractional seconds
Chris@16:   // therefore date and time_duration are used
Chris@16:   posix_time::ptime::date_type d = pt.date();
Chris@16:   ar & make_nvp("ptime_date", d);
Chris@16:   if(!pt.is_special()) {
Chris@16:     posix_time::ptime::time_duration_type td = pt.time_of_day();
Chris@16:     ar & make_nvp("ptime_time_duration", td);
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: //! Function to load posix_time::ptime objects using serialization lib
Chris@16: /*! ptime objects are broken down into 2 parts for serialization:
Chris@16:  * a date object and a time_duration onject
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void load(Archive & ar, 
Chris@16:           posix_time::ptime & pt, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   // from_iso_string does not include fractional seconds
Chris@16:   // therefore date and time_duration are used
Chris@16:   posix_time::ptime::date_type d(posix_time::not_a_date_time);
Chris@16:   posix_time::ptime::time_duration_type td;
Chris@16:   ar & make_nvp("ptime_date", d);
Chris@16:   if(!d.is_special()) {
Chris@16:     ar & make_nvp("ptime_time_duration", td);
Chris@16:     pt = boost::posix_time::ptime(d,td);
Chris@16:   }
Chris@16:   else {
Chris@16:     pt = boost::posix_time::ptime(d.as_special());
Chris@16:   }
Chris@16:     
Chris@16: }
Chris@16: 
Chris@16: //!override needed b/c no default constructor
Chris@16: template<class Archive>
Chris@16: inline void load_construct_data(Archive & /*ar*/, 
Chris@16:                                 posix_time::ptime* pt, 
Chris@16:                                 const unsigned int /*file_version*/)
Chris@16: {
Chris@16:   // retrieve data from archive required to construct new 
Chris@16:   // invoke inplace constructor to initialize instance of date
Chris@16:   new(pt) boost::posix_time::ptime(boost::posix_time::not_a_date_time);
Chris@16: }
Chris@16: 
Chris@16: /*** time_period ***/
Chris@16: 
Chris@16: //! Function to save posix_time::time_period objects using serialization lib
Chris@16: /*! time_period objects are broken down into 2 parts for serialization:
Chris@16:  * a begining ptime object and an ending ptime object
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void save(Archive & ar, 
Chris@16:           const posix_time::time_period& tp, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   posix_time::ptime beg(tp.begin().date(), tp.begin().time_of_day());
Chris@16:   posix_time::ptime end(tp.end().date(), tp.end().time_of_day());
Chris@16:   ar & make_nvp("time_period_begin", beg);
Chris@16:   ar & make_nvp("time_period_end", end);
Chris@16: }
Chris@16: 
Chris@16: //! Function to load posix_time::time_period objects using serialization lib
Chris@16: /*! time_period objects are broken down into 2 parts for serialization:
Chris@16:  * a begining ptime object and an ending ptime object
Chris@16:  */
Chris@16: template<class Archive>
Chris@16: void load(Archive & ar, 
Chris@16:           boost::posix_time::time_period & tp, 
Chris@16:           unsigned int /*version*/)
Chris@16: {
Chris@16:   posix_time::time_duration td(1,0,0);
Chris@16:   gregorian::date d(gregorian::not_a_date_time);
Chris@16:   posix_time::ptime beg(d,td);
Chris@16:   posix_time::ptime end(d,td);
Chris@16:   ar & make_nvp("time_period_begin", beg);
Chris@16:   ar & make_nvp("time_period_end", end);
Chris@16:   tp = boost::posix_time::time_period(beg, end);
Chris@16: }
Chris@16: 
Chris@16: //!override needed b/c no default constructor
Chris@16: template<class Archive>
Chris@16: inline void load_construct_data(Archive & /*ar*/, 
Chris@16:                                 boost::posix_time::time_period* tp, 
Chris@16:                                 const unsigned int /*file_version*/)
Chris@16: {
Chris@16:   posix_time::time_duration td(1,0,0);
Chris@16:   gregorian::date d(gregorian::not_a_date_time);
Chris@16:   posix_time::ptime beg(d,td);
Chris@16:   posix_time::ptime end(d,td);
Chris@16:   new(tp) boost::posix_time::time_period(beg,end);
Chris@16: }
Chris@16: 
Chris@16: } // namespace serialization
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif