Deprecated QDate methods

svn path=/trunk/KDE/kdepim/kontact/plugins/; revision=531931

konsolekalendar/konsolekalendarepoch.cpp

+/*******************************************************************************
+ * 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 Qt, and distribute the resulting executable,            *
+ * without including the source code for Qt in the source distribution.        *
+ *                                                                             *
+ ******************************************************************************/
+/**
+ * @file konsolekalendarepoch.cpp
+ * Provides the KonsoleKalendarEpoch class definition.
+ * @author Tuukka Pasanen
+ * @author Allen Winter
+ */
+#include <stdlib.h>
+#include <iostream>
+
+#include <qdatetime.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 QDateTime
+QDateTime KonsoleKalendarEpoch::epoch2QDateTime( uint epoch )
+{
+  QDateTime dt;
+  dt.setTime_t( epoch );
+  return( dt );
+}
+
+// Function to convert a QDateTime value into an epoch
+uint KonsoleKalendarEpoch::QDateTime2epoch( QDateTime 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 = QDateTime::currentDateTime( Qt::UTC ).toTime_t()
+             - QDateTime::currentDateTime( 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;
+  QDateTime 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::epoch2QDateTime( epoch );
+  cout << "TEST 1:" << endl;
+  cout << "epoch="
+       << epoch
+       << " converts to "
+       << dt.toString( Qt::TextDate )
+       << endl;
+
+  epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
+  cout << "date="
+       << dt.toString( Qt::TextDate )
+       << " converts to "
+       << "epoch="
+       << epoch
+       << endl;
+
+  // Test2
+  epoch = 100000;
+  dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
+  cout << "TEST 2:" << endl;
+  cout << "epoch="
+       << epoch
+       << " converts to "
+       << dt.toString( Qt::TextDate )
+       << endl;
+
+  epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
+  cout << "date="
+       << dt.toString( Qt::TextDate )
+       << " converts to "
+       << "epoch="
+       << epoch
+       << endl;
+
+  // Test3
+  epoch = 10000000;
+  dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
+  cout << "TEST 3:" << endl;
+  cout << "epoch="
+       << epoch
+       << " converts to "
+       << dt.toString( Qt::TextDate )
+       << endl;
+
+  epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
+  cout << "date="
+       << dt.toString( Qt::TextDate )
+       << " converts to "
+       << "epoch="
+       << epoch
+       << endl;
+
+  // Test4
+  epoch = 1000000000;
+  dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
+  cout << "TEST 4:" << endl;
+  cout << "epoch="
+       << epoch
+       << " converts to "
+       << dt.toString( Qt::TextDate )
+       << endl;
+
+  epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
+  cout << "date="
+       << dt.toString( Qt::TextDate )
+       << " converts to "
+       << "epoch="
+       << epoch
+       << endl;
+
+  // Test5
+  epoch = 10000000000;
+  dt = KonsoleKalendarEpoch::epoch2QDateTime( epoch );
+  cout << "TEST 5:" << endl;
+  cout << "epoch="
+       << epoch
+       << " converts to "
+       << dt.toString( Qt::TextDate )
+       << endl;
+
+  epoch = KonsoleKalendarEpoch::QDateTime2epoch( dt );
+  cout << "date="
+       << dt.toString( Qt::TextDate )
+       << " converts to "
+       << "epoch="
+       << epoch
+       << endl;
+}
+#endif