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
|
/*******************************************************************************
* konsolekalendarepoch.cpp *
* *
* KonsoleKalendar is a command line interface to KDE calendars *
* Copyright (C) 2002-2004 Tuukka Pasanen <[email protected]> *
* Copyright (C) 2003-2005 Allen Winter <[email protected]> *
* *
* 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 2 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, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
* *
* As a special exception, permission is given to link this program *
* with any edition of TQt, and distribute the resulting executable, *
* without including the source code for TQt in the source distribution. *
* *
******************************************************************************/
/**
* @file konsolekalendarepoch.cpp
* Provides the KonsoleKalendarEpoch class definition.
* @author Tuukka Pasanen
* @author Allen Winter
*/
#include <stdlib.h>
#include <iostream>
#include <tqdatetime.h>
#include "konsolekalendarepoch.h"
using namespace KCal;
using namespace std;
KonsoleKalendarEpoch::KonsoleKalendarEpoch()
{
}
KonsoleKalendarEpoch::~KonsoleKalendarEpoch()
{
}
// By "epoch" we mean the number of seconds since 00:00:00 UTC on January 1 1970
// Function to convert an epoch value into a TQDateTime
TQDateTime KonsoleKalendarEpoch::epoch2TQDateTime( uint epoch )
{
TQDateTime dt;
dt.setTime_t( epoch, Qt::UTC );
return( dt );
}
// Function to convert a TQDateTime value into an epoch
uint KonsoleKalendarEpoch::TQDateTime2epoch( TQDateTime dt )
{
// THIS FUNCTION CAN BE OFF BY 1 HOUR DUE TO DAYLIGHT SAVINGS TIME.
// SORRY QT DOESN'T HANDLE DAYLIGHT SAVINGS TIME.
// Compute #seconds to subtract for local timezone difference from UTC.
int offset = TQDateTime::tqcurrentDateTime( Qt::UTC ).toTime_t()
- TQDateTime::tqcurrentDateTime( Qt::LocalTime ).toTime_t();
return( dt.toTime_t() - offset );
}
#if defined (TEST)
// Pass -DTEST to the compile command to create the test program, e.g:
// cc -DTEST -I/usr/local/KDE/include konsolekalendarepoch.cpp
// -L/usr/local/KDE/lib -lqt-mt -pthread
main()
{
uint epoch;
TQDateTime dt;
cout << endl;
cout << "NOTE: Some tests may be off by 1 hour (3600 secs) "
<< "due to daylight savings time"
<< endl << endl;
// Test1
epoch = 0;
dt = KonsoleKalendarEpoch::epoch2TQDateTime( epoch );
cout << "TEST 1:" << endl;
cout << "epoch="
<< epoch
<< " converts to "
<< dt.toString( TQt::TextDate )
<< endl;
epoch = KonsoleKalendarEpoch::TQDateTime2epoch( dt );
cout << "date="
<< dt.toString( TQt::TextDate )
<< " converts to "
<< "epoch="
<< epoch
<< endl;
// Test2
epoch = 100000;
dt = KonsoleKalendarEpoch::epoch2TQDateTime( epoch );
cout << "TEST 2:" << endl;
cout << "epoch="
<< epoch
<< " converts to "
<< dt.toString( TQt::TextDate )
<< endl;
epoch = KonsoleKalendarEpoch::TQDateTime2epoch( dt );
cout << "date="
<< dt.toString( TQt::TextDate )
<< " converts to "
<< "epoch="
<< epoch
<< endl;
// Test3
epoch = 10000000;
dt = KonsoleKalendarEpoch::epoch2TQDateTime( epoch );
cout << "TEST 3:" << endl;
cout << "epoch="
<< epoch
<< " converts to "
<< dt.toString( TQt::TextDate )
<< endl;
epoch = KonsoleKalendarEpoch::TQDateTime2epoch( dt );
cout << "date="
<< dt.toString( TQt::TextDate )
<< " converts to "
<< "epoch="
<< epoch
<< endl;
// Test4
epoch = 1000000000;
dt = KonsoleKalendarEpoch::epoch2TQDateTime( epoch );
cout << "TEST 4:" << endl;
cout << "epoch="
<< epoch
<< " converts to "
<< dt.toString( TQt::TextDate )
<< endl;
epoch = KonsoleKalendarEpoch::TQDateTime2epoch( dt );
cout << "date="
<< dt.toString( TQt::TextDate )
<< " converts to "
<< "epoch="
<< epoch
<< endl;
// Test5
epoch = 10000000000;
dt = KonsoleKalendarEpoch::epoch2TQDateTime( epoch );
cout << "TEST 5:" << endl;
cout << "epoch="
<< epoch
<< " converts to "
<< dt.toString( TQt::TextDate )
<< endl;
epoch = KonsoleKalendarEpoch::TQDateTime2epoch( dt );
cout << "date="
<< dt.toString( TQt::TextDate )
<< " converts to "
<< "epoch="
<< epoch
<< endl;
}
#endif
|
