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TimeZone.hpp

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#ifndef IONFLUX_TOOLS_TIMEZONE
#define IONFLUX_TOOLS_TIMEZONE
/* ==========================================================================
 * Ionflux Tools
 * Copyright (c) 2004 Joern P. Meier
 * mail@ionflux.org
 * --------------------------------------------------------------------------
 * TimeZone.hpp                    Time zone.
 * ==========================================================================
 * 
 * This file is part of Ionflux Tools.
 * 
 * Ionflux Tools 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.
 * 
 * Ionflux Tools 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 Ionflux Tools; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 * ========================================================================== */

#include <string>
#include <iostream>
#include "ionflux/DateTime.hpp"

namespace Ionflux
{

namespace Tools
{

class DateTime;

typedef int64_t TimeTicks;
typedef int64_t Year;

struct DSTSwitchingRule
{
    static const int DSR_TYPE_TO_DST;
    static const int DSR_TYPE_TO_NORMAL;
    int type;
    int month;
    int weekDay;
    int week;
    int hour;
    int minute;
    int second;
};

class TimeZone
{
    protected:
        int offset;
        bool useDST;
        DSTSwitchingRule toDST;
        DSTSwitchingRule toNormal;
        std::string nameNormal;
        std::string nameDST;
        std::string shortNameNormal;
        std::string shortNameDST;
        std::string aliases;
        
    public:
        static const DSTSwitchingRule DSR_TO_DST_EUROPE_WESTERN;
        static const DSTSwitchingRule DSR_TO_NORMAL_EUROPE_WESTERN;
        static const DSTSwitchingRule DSR_TO_DST_EUROPE_CENTRAL;
        static const DSTSwitchingRule DSR_TO_NORMAL_EUROPE_CENTRAL;
        static const DSTSwitchingRule DSR_TO_DST_EUROPE_EASTERN;
        static const DSTSwitchingRule DSR_TO_NORMAL_EUROPE_EASTERN;
        static const DSTSwitchingRule DSR_TO_DST_USA;
        static const DSTSwitchingRule DSR_TO_NORMAL_USA;
        static const DSTSwitchingRule DSR_TO_DST_EGYPT;
        static const DSTSwitchingRule DSR_TO_NORMAL_EGYPT;
        
        TimeZone();
        
        TimeZone(int initOffset);
        
        TimeZone(int initOffset,
            const std::string &initNameNormal, 
            const std::string &initNameDST,
            const std::string &initShortNameNormal, 
            const std::string &initShortNameDST, 
            const std::string &initAliases);
        
        TimeZone(int initOffset, 
            const DSTSwitchingRule &initToDST, 
            const DSTSwitchingRule &initToNormal);
        
        TimeZone(int initOffset, 
            const DSTSwitchingRule &initToDST, 
            const DSTSwitchingRule &initToNormal, 
            const std::string &initNameNormal, 
            const std::string &initNameDST,
            const std::string &initShortNameNormal, 
            const std::string &initShortNameDST, 
            const std::string &initAliases);
        
        virtual ~TimeZone();
        
        virtual void setOffset(int newOffset);
        
        virtual void setNameNormal(const std::string &newNameNormal);
        
        virtual void setNameDST(const std::string &newNameDST);
        
        virtual void setShortNameNormal(const std::string &newNameNormal);
        
        virtual void setShortNameDST(const std::string &newNameDST);
        
        virtual void setAliases(const std::string &newAliases);
        
        virtual void setDSTRules(const DSTSwitchingRule &newToDST, 
            const DSTSwitchingRule &newToNormal);
        
        virtual bool isDST(const DateTime &utcDT) const;
        
        virtual bool localIsDST(const DateTime &localDT) const;
        
        virtual int getCurrentOffset(const DateTime &utcDT) const;
        
        virtual const DSTSwitchingRule *getDSTRule(bool ruleFlag) const;
        
        DateTime getSwitchDT(Year year, const DSTSwitchingRule &rule) const;
        
        virtual int getOffset() const;
        
        virtual std::string getNameNormal() const;
        
        virtual std::string getNameDST() const;
        
        virtual std::string getShortNameNormal() const;
        
        virtual std::string getShortNameDST() const;
        
        virtual std::string getAliases() const;
        
        virtual bool hasAlias(const std::string &checkAlias) const;
        
        virtual void enableDST(bool enableFlag);
};

}

}

#endif

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