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
|
#pragma once
// time_t.hpp - time_t with a reliable representation
//
// Copyright © 2013-2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <ctime>
#include "../ints/little.hpp"
#include "operators.hpp"
namespace tmwa
{
// Exists in place of time_t, to give it a predictable printf-format.
// (on x86 and amd64, time_t == long, but not on x32)
static_assert(sizeof(long long) >= sizeof(time_t), "long long >= time_t");
struct TimeT : Comparable
{
long long value;
// conversion
TimeT(time_t t=0) : value(t) {}
TimeT(struct tm t) : value(timegm(&t)) {}
operator time_t() const { return value; }
operator struct tm() const { time_t v = value; return *gmtime(&v); }
explicit operator bool() const { return value; }
bool operator !() const { return !value; }
// prevent surprises
template<class T>
TimeT(T) = delete;
template<class T>
operator T() const = delete;
static
TimeT now()
{
// poisoned, but this is still in header-land
return time(nullptr);
}
bool error() const
{
return value == -1;
}
bool okay() const
{
return !error();
}
};
inline
long long convert_for_printf(TimeT t)
{
return t.value;
}
// 2038 problem
inline __attribute__((warn_unused_result))
bool native_to_network(Little32 *net, TimeT nat)
{
time_t tmp = nat;
return native_to_network(net, static_cast<uint32_t>(tmp));
}
inline __attribute__((warn_unused_result))
bool network_to_native(TimeT *nat, Little32 net)
{
uint32_t tmp;
bool rv = network_to_native(&tmp, net);
*nat = static_cast<time_t>(tmp);
return rv;
}
inline __attribute__((warn_unused_result))
bool native_to_network(Little64 *net, TimeT nat)
{
time_t tmp = nat;
return native_to_network(net, static_cast<uint64_t>(tmp));
}
inline __attribute__((warn_unused_result))
bool network_to_native(TimeT *nat, Little64 net)
{
uint64_t tmp;
bool rv = network_to_native(&tmp, net);
*nat = static_cast<time_t>(tmp);
return rv;
}
} // namespace tmwa
|
