1 | #ifndef POSIX_TIME_SERIALIZE_HPP___ |
2 | #define POSIX_TIME_SERIALIZE_HPP___ |
3 | |
4 | /* Copyright (c) 2004-2005 CrystalClear Software, Inc. |
5 | * Use, modification and distribution is subject to the |
6 | * Boost Software License, Version 1.0. (See accompanying |
7 | * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
8 | * Author: Jeff Garland, Bart Garst |
9 | * $Date$ |
10 | */ |
11 | |
12 | #include "boost/date_time/posix_time/posix_time.hpp" |
13 | #include "boost/date_time/gregorian/greg_serialize.hpp" |
14 | #include "boost/serialization/split_free.hpp" |
15 | #include "boost/serialization/nvp.hpp" |
16 | |
17 | |
18 | // macros to split serialize functions into save & load functions |
19 | // NOTE: these macros define template functions in the boost::serialization namespace. |
20 | // They must be expanded *outside* of any namespace |
21 | BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::ptime) |
22 | BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_duration) |
23 | BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_period) |
24 | |
25 | namespace boost { |
26 | namespace serialization { |
27 | |
28 | |
29 | /*** time_duration ***/ |
30 | |
31 | //! Function to save posix_time::time_duration objects using serialization lib |
32 | /*! time_duration objects are broken down into 4 parts for serialization: |
33 | * types are hour_type, min_type, sec_type, and fractional_seconds_type |
34 | * as defined in the time_duration class |
35 | */ |
36 | template<class Archive> |
37 | void save(Archive & ar, |
38 | const posix_time::time_duration& td, |
39 | unsigned int /*version*/) |
40 | { |
41 | // serialize a bool so we know how to read this back in later |
42 | bool is_special = td.is_special(); |
43 | ar & make_nvp(name: "is_special" , t&: is_special); |
44 | if(is_special) { |
45 | std::string s = to_simple_string(td); |
46 | ar & make_nvp(name: "sv_time_duration" , t&: s); |
47 | } |
48 | else { |
49 | posix_time::time_duration::hour_type h = td.hours(); |
50 | posix_time::time_duration::min_type m = td.minutes(); |
51 | posix_time::time_duration::sec_type s = td.seconds(); |
52 | posix_time::time_duration::fractional_seconds_type fs = td.fractional_seconds(); |
53 | ar & make_nvp(name: "time_duration_hours" , t&: h); |
54 | ar & make_nvp(name: "time_duration_minutes" , t&: m); |
55 | ar & make_nvp(name: "time_duration_seconds" , t&: s); |
56 | ar & make_nvp(name: "time_duration_fractional_seconds" , t&: fs); |
57 | } |
58 | } |
59 | |
60 | //! Function to load posix_time::time_duration objects using serialization lib |
61 | /*! time_duration objects are broken down into 4 parts for serialization: |
62 | * types are hour_type, min_type, sec_type, and fractional_seconds_type |
63 | * as defined in the time_duration class |
64 | */ |
65 | template<class Archive> |
66 | void load(Archive & ar, |
67 | posix_time::time_duration & td, |
68 | unsigned int /*version*/) |
69 | { |
70 | bool is_special = false; |
71 | ar & make_nvp(name: "is_special" , t&: is_special); |
72 | if(is_special) { |
73 | std::string s; |
74 | ar & make_nvp(name: "sv_time_duration" , t&: s); |
75 | posix_time::special_values sv = gregorian::special_value_from_string(s); |
76 | td = posix_time::time_duration(sv); |
77 | } |
78 | else { |
79 | posix_time::time_duration::hour_type h(0); |
80 | posix_time::time_duration::min_type m(0); |
81 | posix_time::time_duration::sec_type s(0); |
82 | posix_time::time_duration::fractional_seconds_type fs(0); |
83 | ar & make_nvp(name: "time_duration_hours" , t&: h); |
84 | ar & make_nvp(name: "time_duration_minutes" , t&: m); |
85 | ar & make_nvp(name: "time_duration_seconds" , t&: s); |
86 | ar & make_nvp(name: "time_duration_fractional_seconds" , t&: fs); |
87 | td = posix_time::time_duration(h,m,s,fs); |
88 | } |
89 | } |
90 | |
91 | // no load_construct_data function provided as time_duration provides a |
92 | // default constructor |
93 | |
94 | /*** ptime ***/ |
95 | |
96 | //! Function to save posix_time::ptime objects using serialization lib |
97 | /*! ptime objects are broken down into 2 parts for serialization: |
98 | * a date object and a time_duration onject |
99 | */ |
100 | template<class Archive> |
101 | void save(Archive & ar, |
102 | const posix_time::ptime& pt, |
103 | unsigned int /*version*/) |
104 | { |
105 | // from_iso_string does not include fractional seconds |
106 | // therefore date and time_duration are used |
107 | posix_time::ptime::date_type d = pt.date(); |
108 | ar & make_nvp(name: "ptime_date" , t&: d); |
109 | if(!pt.is_special()) { |
110 | posix_time::ptime::time_duration_type td = pt.time_of_day(); |
111 | ar & make_nvp(name: "ptime_time_duration" , t&: td); |
112 | } |
113 | } |
114 | |
115 | //! Function to load posix_time::ptime objects using serialization lib |
116 | /*! ptime objects are broken down into 2 parts for serialization: |
117 | * a date object and a time_duration onject |
118 | */ |
119 | template<class Archive> |
120 | void load(Archive & ar, |
121 | posix_time::ptime & pt, |
122 | unsigned int /*version*/) |
123 | { |
124 | // from_iso_string does not include fractional seconds |
125 | // therefore date and time_duration are used |
126 | posix_time::ptime::date_type d(posix_time::not_a_date_time); |
127 | posix_time::ptime::time_duration_type td; |
128 | ar & make_nvp(name: "ptime_date" , t&: d); |
129 | if(!d.is_special()) { |
130 | ar & make_nvp(name: "ptime_time_duration" , t&: td); |
131 | pt = boost::posix_time::ptime(d,td); |
132 | } |
133 | else { |
134 | pt = boost::posix_time::ptime(d.as_special()); |
135 | } |
136 | |
137 | } |
138 | |
139 | //!override needed b/c no default constructor |
140 | template<class Archive> |
141 | inline void load_construct_data(Archive & /*ar*/, |
142 | posix_time::ptime* pt, |
143 | const unsigned int /*file_version*/) |
144 | { |
145 | // retrieve data from archive required to construct new |
146 | // invoke inplace constructor to initialize instance of date |
147 | new(pt) boost::posix_time::ptime(boost::posix_time::not_a_date_time); |
148 | } |
149 | |
150 | /*** time_period ***/ |
151 | |
152 | //! Function to save posix_time::time_period objects using serialization lib |
153 | /*! time_period objects are broken down into 2 parts for serialization: |
154 | * a begining ptime object and an ending ptime object |
155 | */ |
156 | template<class Archive> |
157 | void save(Archive & ar, |
158 | const posix_time::time_period& tp, |
159 | unsigned int /*version*/) |
160 | { |
161 | posix_time::ptime beg(tp.begin().date(), tp.begin().time_of_day()); |
162 | posix_time::ptime end(tp.end().date(), tp.end().time_of_day()); |
163 | ar & make_nvp(name: "time_period_begin" , t&: beg); |
164 | ar & make_nvp(name: "time_period_end" , t&: end); |
165 | } |
166 | |
167 | //! Function to load posix_time::time_period objects using serialization lib |
168 | /*! time_period objects are broken down into 2 parts for serialization: |
169 | * a begining ptime object and an ending ptime object |
170 | */ |
171 | template<class Archive> |
172 | void load(Archive & ar, |
173 | boost::posix_time::time_period & tp, |
174 | unsigned int /*version*/) |
175 | { |
176 | posix_time::time_duration td(1,0,0); |
177 | gregorian::date d(gregorian::not_a_date_time); |
178 | posix_time::ptime beg(d,td); |
179 | posix_time::ptime end(d,td); |
180 | ar & make_nvp(name: "time_period_begin" , t&: beg); |
181 | ar & make_nvp(name: "time_period_end" , t&: end); |
182 | tp = boost::posix_time::time_period(beg, end); |
183 | } |
184 | |
185 | //!override needed b/c no default constructor |
186 | template<class Archive> |
187 | inline void load_construct_data(Archive & /*ar*/, |
188 | boost::posix_time::time_period* tp, |
189 | const unsigned int /*file_version*/) |
190 | { |
191 | posix_time::time_duration td(1,0,0); |
192 | gregorian::date d(gregorian::not_a_date_time); |
193 | posix_time::ptime beg(d,td); |
194 | posix_time::ptime end(d,td); |
195 | new(tp) boost::posix_time::time_period(beg,end); |
196 | } |
197 | |
198 | } // namespace serialization |
199 | } // namespace boost |
200 | |
201 | #endif |
202 | |