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lkdatetimereader.h

/* liblookdb: lkdatetimereader.h - Parses date/time strings 
    Copyright (C) 1998-2001 LOOK Systems

    This library 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 2.1 of the License, or (at your option) any later version.

    This library 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 this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef LIBLOOKDB_LKDATETIMEREADER_H
#define LIBLOOKDB_LKDATETIMEREADER_H

// $Id: lkdatetimereader.h,v 1.5 2001/07/05 16:11:21 clive Exp $

#include "lookdbutils.h"
#include "lkstring.h"
#include "lkdatetime.h"
#include "lookstringlist.h"
#include "looklonglist.h"

namespace look {


class LOOKDBUTILITIES_DLL LookDateTimeReader
{
public:

        enum DatePartOrder
        {
                AnyPreferDMY = 1, 
                AnyPreferMDY,     
                DMY,              
                MDY,              
                YMD               
        };

        enum DateTimeOrder
        {
                AnyPreferDT = 1, 
                AnyPreferTD,     
                DT,              
                TD               
        };

        static bool ReadDate( const LookString& theString,
                LookDate& theDate, DatePartOrder partOrder = AnyPreferDMY );
        static bool ReadTime( const LookString& theString,
                LookTime& theTime );
        static bool ReadDateTime( const LookString& theString,
                LookDateTime& theDateTime, DateTimeOrder dtOrder = AnyPreferDT,
                DatePartOrder partOrder = AnyPreferDMY );

protected:

        static bool FindYearPart( const LookString& theString,
                bool& yearIsAtBegin );

        static void SplitToParts( LookStringList& theParts,
                const LookString& theString );

        static LookString GetAlphaOnly( LookString theString );

        static bool FindMonthString( LookStringList& theParts,
                int& monthIndex );

        static bool IsNumeric( const LookString& theString );

        static void CombineSplitStrings( 
                const LookStringList& theParts, long theSplitPos,
                LookString& beforeString, LookString& afterString );

        static void GuessDTOrder( const LookString& theString,
                DateTimeOrder& dtOrder );

        static void SplitToPartsFindSeps( LookStringList& theParts,
                LongValList& theDateSepPositions,
                LongValList& theTimeSepPositions,
                const LookString& theString );

        static void CheckForSepsAndAddIfValid( 
                LookString theString,
                LookStringList& theParts,
                LongValList& theDateSepPositions,
                LongValList& theTimeSepPositions );
};


} // end of "look" namespace
#endif 

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