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/*******************************************************************************
* konsolekalendarepoch.cpp *
* *
* KonsoleKalendar is a command line interface to KDE calendars *
* Copyright (C) 2002-2004 Tuukka Pasanen <illuusio@mailcity.com> *
* Copyright (C) 2003-2005 Allen Winter <winter@kde.org> *
* *
* 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, TQt::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::currentDateTime( TQt::UTC ).toTime_t()
- TQDateTime::currentDateTime( TQt::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
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