1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
#ifndef POSIX_TIME_SERIALIZE_HPP___
#define POSIX_TIME_SERIALIZE_HPP___
/* Copyright (c) 2004-2005 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
* $Date$
*/
#include "boost/date_time/posix_time/posix_time.hpp"
#include "boost/date_time/gregorian/greg_serialize.hpp"
#include "boost/numeric/conversion/cast.hpp"
#include "boost/serialization/split_free.hpp"
#include "boost/serialization/nvp.hpp"
#include "boost/serialization/version.hpp"
// macros to split serialize functions into save & load functions
// NOTE: these macros define template functions in the boost::serialization namespace.
// They must be expanded *outside* of any namespace
BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::ptime)
BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_duration)
BOOST_SERIALIZATION_SPLIT_FREE(boost::posix_time::time_period)
// Define versions for serialization compatibility
// alows the unit tests to make an older version to check compatibility
#ifndef BOOST_DATE_TIME_POSIX_TIME_DURATION_VERSION
#define BOOST_DATE_TIME_POSIX_TIME_DURATION_VERSION 1
#endif
BOOST_CLASS_VERSION(boost::posix_time::time_duration, BOOST_DATE_TIME_POSIX_TIME_DURATION_VERSION)
namespace boost {
namespace serialization {
/*** time_duration ***/
//! Function to save posix_time::time_duration objects using serialization lib
/*! time_duration objects are broken down into 4 parts for serialization:
* types are hour_type, min_type, sec_type, and fractional_seconds_type
* as defined in the time_duration class
*/
template<class TimeResTraitsSize, class Archive>
void save_td(Archive& ar, const posix_time::time_duration& td)
{
TimeResTraitsSize h = boost::numeric_cast<TimeResTraitsSize>(td.hours());
TimeResTraitsSize m = boost::numeric_cast<TimeResTraitsSize>(td.minutes());
TimeResTraitsSize s = boost::numeric_cast<TimeResTraitsSize>(td.seconds());
posix_time::time_duration::fractional_seconds_type fs = td.fractional_seconds();
ar & make_nvp("time_duration_hours", h);
ar & make_nvp("time_duration_minutes", m);
ar & make_nvp("time_duration_seconds", s);
ar & make_nvp("time_duration_fractional_seconds", fs);
}
template<class Archive>
void save(Archive & ar,
const posix_time::time_duration& td,
unsigned int version)
{
// serialize a bool so we know how to read this back in later
bool is_special = td.is_special();
ar & make_nvp("is_special", is_special);
if(is_special) {
std::string s = to_simple_string(td);
ar & make_nvp("sv_time_duration", s);
}
else {
// Write support for earlier versions allows for upgrade compatibility testing
// See load comments for version information
if (version == 0) {
save_td<int32_t>(ar, td);
} else {
save_td<int64_t>(ar, td);
}
}
}
//! Function to load posix_time::time_duration objects using serialization lib
/*! time_duration objects are broken down into 4 parts for serialization:
* types are hour_type, min_type, sec_type, and fractional_seconds_type
* as defined in the time_duration class
*/
template<class TimeResTraitsSize, class Archive>
void load_td(Archive& ar, posix_time::time_duration& td)
{
TimeResTraitsSize h(0);
TimeResTraitsSize m(0);
TimeResTraitsSize s(0);
posix_time::time_duration::fractional_seconds_type fs(0);
ar & make_nvp("time_duration_hours", h);
ar & make_nvp("time_duration_minutes", m);
ar & make_nvp("time_duration_seconds", s);
ar & make_nvp("time_duration_fractional_seconds", fs);
td = posix_time::time_duration(h, m, s, fs);
}
template<class Archive>
void load(Archive & ar,
posix_time::time_duration & td,
unsigned int version)
{
bool is_special = false;
ar & make_nvp("is_special", is_special);
if(is_special) {
std::string s;
ar & make_nvp("sv_time_duration", s);
posix_time::special_values sv = gregorian::special_value_from_string(s);
td = posix_time::time_duration(sv);
}
else {
// Version "0" (Boost 1.65.1 or earlier, which used int32_t for day/hour/minute/second and
// therefore suffered from the year 2038 issue.)
// Version "0.5" (Boost 1.66.0 changed to std::time_t but did not increase the version;
// it was missed in the original change, all code reviews, and there were no
// static assertions to protect the code; further std::time_t can be 32-bit
// or 64-bit so it reduced portability. This makes 1.66.0 hard to handle...)
// Version "1" (Boost 1.67.0 or later uses int64_t and is properly versioned)
// If the size of any of these items changes, a new version is needed.
BOOST_STATIC_ASSERT(sizeof(posix_time::time_duration::hour_type) == sizeof(boost::int64_t));
BOOST_STATIC_ASSERT(sizeof(posix_time::time_duration::min_type) == sizeof(boost::int64_t));
BOOST_STATIC_ASSERT(sizeof(posix_time::time_duration::sec_type) == sizeof(boost::int64_t));
BOOST_STATIC_ASSERT(sizeof(posix_time::time_duration::fractional_seconds_type) == sizeof(boost::int64_t));
if (version == 0) {
load_td<int32_t>(ar, td);
} else {
load_td<int64_t>(ar, td);
}
}
}
// no load_construct_data function provided as time_duration provides a
// default constructor
/*** ptime ***/
//! Function to save posix_time::ptime objects using serialization lib
/*! ptime objects are broken down into 2 parts for serialization:
* a date object and a time_duration onject
*/
template<class Archive>
void save(Archive & ar,
const posix_time::ptime& pt,
unsigned int /*version*/)
{
// from_iso_string does not include fractional seconds
// therefore date and time_duration are used
posix_time::ptime::date_type d = pt.date();
ar & make_nvp("ptime_date", d);
if(!pt.is_special()) {
posix_time::ptime::time_duration_type td = pt.time_of_day();
ar & make_nvp("ptime_time_duration", td);
}
}
//! Function to load posix_time::ptime objects using serialization lib
/*! ptime objects are broken down into 2 parts for serialization:
* a date object and a time_duration onject
*/
template<class Archive>
void load(Archive & ar,
posix_time::ptime & pt,
unsigned int /*version*/)
{
// from_iso_string does not include fractional seconds
// therefore date and time_duration are used
posix_time::ptime::date_type d(posix_time::not_a_date_time);
posix_time::ptime::time_duration_type td;
ar & make_nvp("ptime_date", d);
if(!d.is_special()) {
ar & make_nvp("ptime_time_duration", td);
pt = boost::posix_time::ptime(d,td);
}
else {
pt = boost::posix_time::ptime(d.as_special());
}
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & /*ar*/,
posix_time::ptime* pt,
const unsigned int /*file_version*/)
{
// retrieve data from archive required to construct new
// invoke inplace constructor to initialize instance of date
new(pt) boost::posix_time::ptime(boost::posix_time::not_a_date_time);
}
/*** time_period ***/
//! Function to save posix_time::time_period objects using serialization lib
/*! time_period objects are broken down into 2 parts for serialization:
* a begining ptime object and an ending ptime object
*/
template<class Archive>
void save(Archive & ar,
const posix_time::time_period& tp,
unsigned int /*version*/)
{
posix_time::ptime beg(tp.begin().date(), tp.begin().time_of_day());
posix_time::ptime end(tp.end().date(), tp.end().time_of_day());
ar & make_nvp("time_period_begin", beg);
ar & make_nvp("time_period_end", end);
}
//! Function to load posix_time::time_period objects using serialization lib
/*! time_period objects are broken down into 2 parts for serialization:
* a begining ptime object and an ending ptime object
*/
template<class Archive>
void load(Archive & ar,
boost::posix_time::time_period & tp,
unsigned int /*version*/)
{
posix_time::time_duration td(1,0,0);
gregorian::date d(gregorian::not_a_date_time);
posix_time::ptime beg(d,td);
posix_time::ptime end(d,td);
ar & make_nvp("time_period_begin", beg);
ar & make_nvp("time_period_end", end);
tp = boost::posix_time::time_period(beg, end);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & /*ar*/,
boost::posix_time::time_period* tp,
const unsigned int /*file_version*/)
{
posix_time::time_duration td(1,0,0);
gregorian::date d(gregorian::not_a_date_time);
posix_time::ptime beg(d,td);
posix_time::ptime end(d,td);
new(tp) boost::posix_time::time_period(beg,end);
}
} // namespace serialization
} // namespace boost
#endif
|
