TxtExpUtils.h

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#ifndef __TxtExpUtils_H__
#define __TxtExpUtils_H__


// Interface includes
#include "ITxtExpFileWriter.h"
#include "IIntData.h"



//extern IIntData* fEncoding;


// some useful macros

#ifndef GETHIBYTE
#define GETHIBYTE(w) ((uchar)(((uint16)(w) >> 8) & 0xFF))
#endif

#ifndef GETLOBYTE
#define GETLOBYTE(w) ((uchar)(w) & 0xFF)
#endif

#ifndef MAKEBIGENDIANWORD
#define MAKEBIGENDIANWORD(hb, lb) ((uint16) ( ((uchar)(lb)) + ( ((uint16)((uchar)(hb))) << 8) ) )
#endif

#ifndef SWAPWORD
#define SWAPWORD(s) MAKEBIGENDIANWORD(GETLOBYTE(s), GETHIBYTE(s))
#endif


class TxtExpUtils
{
public:
 static ITxtExpFileWriter* QueryTxtExpFileWriter(ITxtExpFileWriter::Encoding encoding);

 static IIntData* GetEncodingIntData(bool16 bRelease = kFalse);

 
 enum Modifier
 {
 None,
 Dakuten,
 Handakuten
 };
 
 static const int32 kHankakuColumn;
 
 static const int32 kZenkakuColumn;
 
 static const int32 kNumKatakana;

 static const int32 kKatakanaNotFound;
 
 
 static textchar HankakuToZenkaku(const textchar tc, 
 const TxtExpUtils::Modifier modifier = TxtExpUtils::None);
 
 static textchar ZenkakuToHankaku(const textchar tc, 
 TxtExpUtils::Modifier& modifier);

private:
 static const textchar k_fKatakanaLookup[][2];

 static int32 FindKatakanaIndex(const textchar uc, const int32 lookAtWhichColumn);
 
};
#endif //#ifndef __TxtExpUtils_H__