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time.HolidayRule.h

/*----------------------------------------------------------------------------
  SWORD 2000 - Software With Objects for Rapid Development
  Copyright (C) 2003 Eric NICOLAS
  ----------------------------------------------------------------------------
  SWORD is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  SWORD 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 Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with SWORD; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  --------------------------------------------------------------------------*/
#ifndef _SWORD_TIME_HOLIDAYRULE_
#define _SWORD_TIME_HOLIDAYRULE_

#include "sword/time.Time.h"
#include "sword/time.Date.h"

int hr_parse(void *obj);

namespace sword {


  class SWORDDECL HolidayRule {
    friend int ::hr_parse(void *obj);
  public:
    HolidayRule(const std::string &name, const std::string &rule);

    std::string toString() const;


    bool compute(word year, Time &time) const;

  private:
    // rule name
    std::string name_;

    // parsed rule content
    // :: dowo = dayOfWeekOffset
    word dowoNumber_;     // 0=none
    word dowoDay_;        // 0=sun, 1=mon...
    word dowoDirection_;  // 0=before, 1=after
    // :: do   = dayOffset
    word doNumber_;       // 0=none
    word doDirection_;    // 0=before, 1=after
    // :: ar   = absoluteRule
    word arDay_;          // 0=none (used special), otherwise 1-based
    word arMonth_;        // 0=none (used special), otherwise 1-based
    word arYear_;         // 0=none
    word arSpecial_;      // 0=none, 1=easter_western,  2=easter_orhtodox
                          //         3=vernal_equinox,  4=automnal_equinox
                          //         5=summer_solstice, 6=winter_solstice
                          //         7=chinese_newyear
    word arDowFilter_;    // 7=none, 0=sun, 1=mon...
    // :: apr  = applicationRange
    Time fromTime_;       // range limit
    Time toTime_;         // range limit
  };

  // Exceptions
  class HolidayRuleParsingException : public Exception {};

} // namespace sword

#endif // _SWORD_TIME_HOLIDAYRULE_

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