segyhdrcalc.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          Mar 2011
________________________________________________________________________

-*/

#include "segyhdrdef.h"
#include "namedobj.h"
#include "typeset.h"
#include "od_iosfwd.h"
#include "uistring.h"
class Executor;
class BufferStringSet;
namespace Math { class Expression; }


namespace SEGY
{
class BinHeader;
class TxtHeader;

mExpClass(Seis) HdrCalc
{ mODTextTranslationClass(HdrCalc);
public:

                        HdrCalc( const HdrEntry& he, const char* def )
                            : he_(he), def_(def)        {}

    const HdrEntry&     he_;    
    BufferString        def_;   

    inline BufferString getDispStr() const
                        { return BufferString( he_.name(), " = ", def_ ); }

};


mExpClass(Seis) HdrCalcSet : public ObjectSet<HdrCalc>
                  , public NamedObject
{ mODTextTranslationClass(HdrCalcSet);
public:
                                HdrCalcSet(const HdrDef&);
                                ~HdrCalcSet();
    const HdrDef&               hdrDef()        { return hdef_; }
    const HdrEntry&             trcIdxEntry()   { return trcidxhe_; }

    int                         indexOf(const char* entrynm) const;
    int                         indexOf( const HdrCalc* he ) const
                                { return ObjectSet<HdrCalc>::indexOf(he); }
    bool                        set(int,const char* def,uiString* emsg=0);
    bool                        add(const HdrEntry&,const char* def,
                                    uiString* emsg=0);
    bool                        add(const char* dispstr);
    void                        discard(int);
    void                        setEmpty();

    void                        reSetSeqNr( int seqnr=1 ) { seqnr_ = seqnr; }
    void                        apply(void*,bool needswap) const;
    Executor*                   getApplier(od_istream&,od_ostream&,
                                           int data_bytes_per_trace,
                                           const BinHeader* bh=0,
                                           const TxtHeader* th=0) const;

    bool                        storeInSettings() const;
    void                        getFromSettings(const char*);

    static void                 getStoredNames(BufferStringSet&);
    static const char*          sKeySettsFile() { return "segyhdrcalc"; }

protected:

    const HdrDef&               hdef_;
    HdrEntry                    trcidxhe_;
    ObjectSet<Math::Expression> exprs_;
    ObjectSet< TypeSet<int> >   heidxs_;
    mutable int                 seqnr_;

    Math::Expression*           gtME(const char*,TypeSet<int>&,
                                     uiString*) const;

};

} // namespace