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177 lines
5.6 KiB
177 lines
5.6 KiB
/*******************************************************************************
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* konsolekalendarepoch.cpp *
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* *
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* KonsoleKalendar is a command line interface to KDE calendars *
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* Copyright (C) 2002-2004 Tuukka Pasanen <illuusio@mailcity.com> *
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* Copyright (C) 2003-2005 Allen Winter <winter@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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* *
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* As a special exception, permission is given to link this program *
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* with any edition of Qt, and distribute the resulting executable, *
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* without including the source code for Qt in the source distribution. *
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* *
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******************************************************************************/
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/**
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* @file konsolekalendarepoch.cpp
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* Provides the KonsoleKalendarEpoch class definition.
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* @author Tuukka Pasanen
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* @author Allen Winter
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*/
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#include <stdlib.h>
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#include <iostream>
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#include <qdatetime.h>
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#include "konsolekalendarepoch.h"
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using namespace KCal;
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using namespace std;
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KonsoleKalendarEpoch::KonsoleKalendarEpoch()
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{
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}
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KonsoleKalendarEpoch::~KonsoleKalendarEpoch()
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{
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}
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// By "epoch" we mean the number of seconds since 00:00:00 UTC on January 1 1970
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// Function to convert an epoch value into a QDateTime
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QDateTime KonsoleKalendarEpoch::epoch2QDateTime( uint epoch )
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{
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QDateTime dt;
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dt.setTime_t( epoch, Qt::UTC );
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return( dt );
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}
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// Function to convert a QDateTime value into an epoch
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uint KonsoleKalendarEpoch::QDateTime2epoch( QDateTime dt )
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{
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// THIS FUNCTION CAN BE OFF BY 1 HOUR DUE TO DAYLIGHT SAVINGS TIME.
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// SORRY QT DOESN'T HANDLE DAYLIGHT SAVINGS TIME.
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// Compute #seconds to subtract for local timezone difference from UTC.
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int offset = QDateTime::currentDateTime( Qt::UTC ).toTime_t()
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- QDateTime::currentDateTime( Qt::LocalTime ).toTime_t();
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return( dt.toTime_t() - offset );
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}
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#if defined (TEST)
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// Pass -DTEST to the compile command to create the test program, e.g:
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// cc -DTEST -I/usr/local/KDE/include konsolekalendarepoch.cpp
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// -L/usr/local/KDE/lib -lqt-mt -pthread
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main()
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{
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uint epoch;
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QDateTime dt;
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cout << endl;
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cout << "NOTE: Some tests may be off by 1 hour (3600 secs) "
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<< "due to daylight savings time"
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<< endl << endl;
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// Test1
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epoch = 0;
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dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
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cout << "TEST 1:" << endl;
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cout << "epoch="
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<< epoch
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<< " converts to "
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<< dt.toString( Qt::TextDate )
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<< endl;
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epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
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cout << "date="
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<< dt.toString( Qt::TextDate )
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<< " converts to "
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<< "epoch="
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<< epoch
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<< endl;
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// Test2
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epoch = 100000;
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dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
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cout << "TEST 2:" << endl;
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cout << "epoch="
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<< epoch
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<< " converts to "
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<< dt.toString( Qt::TextDate )
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<< endl;
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epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
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cout << "date="
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<< dt.toString( Qt::TextDate )
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<< " converts to "
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<< "epoch="
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<< epoch
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<< endl;
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// Test3
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epoch = 10000000;
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dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
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cout << "TEST 3:" << endl;
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cout << "epoch="
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<< epoch
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<< " converts to "
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<< dt.toString( Qt::TextDate )
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<< endl;
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epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
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cout << "date="
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<< dt.toString( Qt::TextDate )
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<< " converts to "
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<< "epoch="
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<< epoch
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<< endl;
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// Test4
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epoch = 1000000000;
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dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
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cout << "TEST 4:" << endl;
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cout << "epoch="
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<< epoch
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<< " converts to "
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<< dt.toString( Qt::TextDate )
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<< endl;
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epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
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cout << "date="
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<< dt.toString( Qt::TextDate )
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<< " converts to "
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<< "epoch="
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<< epoch
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<< endl;
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// Test5
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epoch = 10000000000;
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dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
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cout << "TEST 5:" << endl;
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cout << "epoch="
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<< epoch
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<< " converts to "
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<< dt.toString( Qt::TextDate )
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<< endl;
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epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
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cout << "date="
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<< dt.toString( Qt::TextDate )
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<< " converts to "
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<< "epoch="
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<< epoch
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<< endl;
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}
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#endif
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