gdate.h

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//
// Copyright (C) 2001-2013 Graeme Walker <graeme_walker@users.sourceforge.net>
// 
// 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 3 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, see <http://www.gnu.org/licenses/>.
// ===

#ifndef G_DATE_H
#define G_DATE_H

#include "gdef.h"
#include "gdatetime.h"
#include "gdebug.h"
#include <ctime>
#include <string>

namespace G
{
        class Date ;
}

class G::Date 
{
public:
        class LocalTime 
                {} ;

        enum Weekday 
                { sunday, monday, tuesday, wednesday, thursday, friday, saturday } ;

        enum Month 
                { january = 1 , february , march , april , may , june , july , 
                august , september , october , november , december } ;

        enum Format
                { yyyy_mm_dd_slash , yyyy_mm_dd , mm_dd } ;

        static int yearUpperLimit() ;

        static int yearLowerLimit() ;

        Date() ;

        explicit Date( const LocalTime & ) ;

        Date( const G::DateTime::BrokenDownTime & tm ) ;

        explicit Date( G::DateTime::EpochTime t ) ;

        Date( G::DateTime::EpochTime t , const LocalTime & ) ;

        Date( int year , Month month , int day_of_month ) ;

        std::string string( Format format = yyyy_mm_dd_slash ) const ;

        Weekday weekday() const ;

        std::string weekdayName( bool brief = false ) const ;

        int monthday() const ;

        std::string dd() const ;

        Month month() const ;

        std::string monthName( bool brief = false ) const ;

        std::string mm() const ;

        int year() const ;

        std::string yyyy() const ;

        Date & operator++() ;

        Date & operator--() ;

        bool operator==( const Date & rhs ) const ;

        bool operator!=( const Date & rhs ) const ;

private:
        void init( const G::DateTime::BrokenDownTime & ) ;
        static int lastDay( int month , int year ) ;
        static bool isLeapYear( int y ) ;

private:
        int m_day ;
        int m_month ;
        int m_year ;
        bool m_weekday_set ;
        Weekday m_weekday ;
} ;

#endif