ArabicUTFConverter.h

/* Adapted implementation of BidiJoin algithm from https://github.com/xbmc/xbmc/ */
 
/*Original copyright info:*/
/*
*  Copyright (C) 2005-2008 Team XBMC
*  http://www.xbmc.org
*
*  A port of Mohammed Yousif's C Arabic shaping code
*  Ported by Nibras Al-shaiba
*
*  This Program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2, or (at your option)
*  any later version.
*
*  This Program 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 General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with XBMC; see the file COPYING.  If not, write to
*  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*  http://www.gnu.org/copyleft/gpl.html
*
*/
 
#ifndef __ARABIC_UTF_CONVERTER_H__
#define __ARABIC_UTF_CONVERTER_H__
 
#include "bidi.h"
#include "eC_String.h"
 
#define MAP_LENGTH 37
#define COMB_MAP_LENGTH 4
#define TRANS_CHARS_LENGTH 39
 
class ArabicUTFConverter
{
public:
    typedef struct
    {
        eC_UTF16 code; 
        eC_UTF16 mIsolated; 
        eC_UTF16 mInitial; 
        eC_UTF16 mMedial; 
        eC_UTF16 mFinal; 
    } CharRep_t;
 
    typedef struct
    {
        eC_UTF16 code[2]; 
        eC_UTF16 mIsolated; 
        eC_UTF16 mInitial; 
        eC_UTF16 mMedial; 
        eC_UTF16 mFinal; 
    } CombCharRep_t;
 
public:
    static eC_String ConvertArabic(const eC_String& rkSourceString, eC_Bool& bConverted);
 
    static CharRep_t GetCharRep(eC_UTF16 c);
 
    static CombCharRep_t GetcombCharRep(eC_UTF16 c);
 
    static eC_UTF16 GetCode(eC_UTF16 c);
 
    static void GetTextInUTF16(const eC_String& kSource, eC_UInt& ruiLength);
 
    static eC_String GetInternTextData(const eC_String& rkSourceString, const eC_Bool& bGlobalCodePresentation = true);
 
    static eC_Bool IsArabicChar(eC_UTF16 cCharacter);
 
private:
    static eC_Int GetTextContextualForm(eC_UTF16* pcInputString, const eC_UInt& uiLength, eC_UTF16* pcOutputString, const eC_Bool& bGlobalCodePresentation = true);
    static eC_UTF16* GetCombCode(eC_UTF16 c);
 
    static eC_Int ShapeArabic(eC_UTF16* paInputString, const eC_UInt& uiLength, eC_UTF16* paOutputString, eC_Bool& bConverted);
 
    static eC_Bool CharacterMapContains(eC_UTF16 c);
    static eC_Bool CombiCharacterMapContains(eC_UTF16 c);
 
    static CombCharRep_t GetCombCharRep(eC_UTF16 c1, eC_UTF16 c2);
 
    static eC_Bool IsTransparent(eC_UTF16 c);
};
 
#endif