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expandlib-vartype-date.h

Go to the documentation of this file.

/* This file is part of Expandlib.

  Copyright (C) 2002 Jasper van de Gronde

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jasper van de Gronde th.v.d.gronde@hccnet.nl

*/

#ifndef EXPANDLIB_VARTYPE_DATE_H_INCLUDED
#define EXPANDLIB_VARTYPE_DATE_H_INCLUDED

#include <boost/lexical_cast.hpp>

#include "expandlib-vartype.h"

namespace expander { // *** Start of namespace


    template<
        // Used for the expandable string (and the expanded string)
        class StringType = ::std::string
        >
    class expvartype_date : public expandvartype<StringType> {
    protected:

        class DateType {
        public:
            DateType(int y=0, int m=0, int d=0) { year=y; month=m; day=d; }

            int year;
            int month;
            int day;
        } Date;

        inline StringType PadWithZeroes(const StringType &s, const unsigned int num) const {
            const StringType::value_type padchar(_T('0'));

            if ( s.size() < num ) {
                StringType d(num-s.size(), padchar);
                //for(unsigned int u=0; u<(num-s.size()); ++u) d+=padchar;
                d+=s;
                return d;
            } else {
                return s;
            }
        }

        inline void PadWithZeroesTo(StringType &d, const StringType &s, const unsigned int num) const {
            const StringType::value_type padchar(_T('0'));

            if ( s.size() < num ) {
                d.append(num-s.size(), padchar);
                d+=s;
            } else {
                d+=s;
            }
        }

    public:

//      /// Default contructor, inits to 0:0:0.0
//      expvartype_date() {}

        expvartype_date(int y=0, int m=0, int d=0) : Time(y,m,d) {}

        expvartype_date(const _TCHAR * cs) {
            const StringType s(cs);
            SetValue(s);
        }

        expvartype_date(const StringType s) {
            SetValue(s);
        }

        virtual void AppendValue(StringType &dest) const {
            try {
                dest+=boost::lexical_cast<StringType>(Date.year);
            } catch(...) {
                dest+=_T("0000");
            }
            dest+=_T('-');
            try {
                PadWithZeroesTo(dest, boost::lexical_cast<StringType>(Date.month),2);
            } catch(...) {
                dest+=_T("00");
            }
            dest+=_T('-');
            try {
                PadWithZeroesTo(dest, boost::lexical_cast<StringType>(Date.day),2);
            } catch(...) {
                dest+=_T("00");
            }
        }

        virtual void AppendValue(StringType &dest, const FParamVectorType &params, const FVarMapType &vars, ExpandResultsType &results) const {
            AppendValue(dest);
        }

        virtual void SetValue(const StringType &s) {
            std::vector<int> vals;
            {
                StringType temp;
                for(StringType::const_iterator it=s.begin(); it!=s.end(); ++it) {
                    if ( *it >= _T('0') && *it <= _T('9') ) {
                        temp+=*it;
                    } else if ( *it == _T('-') ) {
                        try {
                            vals.push_back(boost::lexical_cast<int>(temp));
                        } catch (boost::bad_lexical_cast) {
                            vals.push_back(0);
                        }
                        temp=_T("");
                    } else {
                        break;
                    }
                }
                try {
                    vals.push_back(boost::lexical_cast<int>(temp));
                } catch (boost::bad_lexical_cast) {
                    vals.push_back(0);
                }
            }

            if ( vals.size() == 3 ) {
                Date.year=vals[0];
                Date.month=vals[1];
                Date.day=vals[2];
                if ( Date.month > 12 ) Date.month=12;
                if ( Date.month < 1 ) Date.month=1;
                if ( Date.day > 31 ) Date.day=31;
                if ( Date.day < 1 ) Date.day=1;
            }
        }

        inline StringType get_string() {
            StringType s;
            AppendValue(s);
            return s;
        }
    };

} // *** End of namespace

#endif //EXPANDLIB_VARTYPE_DATE_H_INCLUDED

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