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00001 /********************************************************************************
00002 * *
00003 * Julian Date object *
00004 * *
00005 *********************************************************************************
00006 * Copyright (C) 2003 by Mathew Robertson. All Rights Reserved. *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or *
00009 * modify it under the terms of the GNU Lesser General Public *
00010 * License as published by the Free Software Foundation; either *
00011 * version 2.1 of the License, or (at your option) any later version. *
00012 * *
00013 * This library is distributed in the hope that it will be useful, *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
00016 * Lesser General Public License for more details. *
00017 * *
00018 * You should have received a copy of the GNU Lesser General Public *
00019 * License along with this library; if not, write to the Free Software *
00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *
00021 ********************************************************************************/
00022 // Origonal design/implementation taken from jDate by: J. Knight <jimbag@kw.igs.net>
00023 #ifndef FXJULIANDATE_H
00024 #define FXJULIANDATE_H
00025
00026 namespace FXEX {
00027
00028 /**
00029 * Julian date to Gregorian data object
00030 */
00031 class FXAPI FXJulianDate {
00032 private:
00033 FXuint julian; // the date in Julian date format
00034 static const FXchar *monthNames[]; // names of months
00035 static const FXchar *dayNames[]; // names of days of the week
00036
00037 protected:
00038 FXuint greg2jul( FXint y, FXint m, FXint d );
00039 void jul2greg( FXuint jd, FXint &y, FXint &m, FXint &d );
00040
00041 public:
00042 /// use today's date
00043 FXJulianDate();
00044
00045 /// use specific date
00046 FXJulianDate( FXint yr, FXint mo, FXint da );
00047
00048 /// set the adte to a specific date
00049 void setDate( FXint y, FXint m, FXint d );
00050
00051 /// set it to today's date
00052 void today();
00053
00054 /// accessors
00055 FXint day();
00056 FXint month();
00057 FXint year();
00058 FXint daysInMonth();
00059 FXint dayOfWeek();
00060 FXint dayOfYear();
00061
00062 /// is the value a leap year
00063 FXbool leapYear( FXint y );
00064
00065 /// get the name of the month
00066 const FXchar *monthName( FXint month ) const;
00067
00068 /// get the name of the day
00069 const FXchar *dayName( FXint day ) const;
00070
00071 /// save to stream
00072 friend FXAPI FXStream& operator<< (FXStream& store,const FXJulianDate& d);
00073
00074 /// load from stream
00075 friend FXAPI FXStream& operator>> (FXStream& store,FXJulianDate& d);
00076
00077 /// dtor
00078 virtual ~FXJulianDate() {}
00079 };
00080
00081 } // namespace FXEX
00082 #endif // FXJULIANDATE_H