CUnicode.h

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012 Bolton Software Ltd.
 * Copyright (C) 2002 Chris Schoeneman
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file COPYING that should have accompanied this file.
 * 
 * This package 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CUNICODE_H
#define CUNICODE_H

#include "CString.h"
#include "BasicTypes.h"


class CUnicode {
public:



    static bool         isUTF8(const CString&);


    static CString      UTF8ToUCS2(const CString&, bool* errors = NULL);


    static CString      UTF8ToUCS4(const CString&, bool* errors = NULL);


    static CString      UTF8ToUTF16(const CString&, bool* errors = NULL);


    static CString      UTF8ToUTF32(const CString&, bool* errors = NULL);


    static CString      UTF8ToText(const CString&, bool* errors = NULL);


    static CString      UCS2ToUTF8(const CString&, bool* errors = NULL);


    static CString      UCS4ToUTF8(const CString&, bool* errors = NULL);


    static CString      UTF16ToUTF8(const CString&, bool* errors = NULL);


    static CString      UTF32ToUTF8(const CString&, bool* errors = NULL);


    static CString      textToUTF8(const CString&, bool* errors = NULL);


private:
    // convert UTF8 to wchar_t string (using whatever encoding is native
    // to the platform).  caller must delete[] the returned string.  the
    // string is *not* nul terminated;  the length (in characters) is
    // returned in size.
    static wchar_t*     UTF8ToWideChar(const CString&,
                            UInt32& size, bool* errors);

    // convert nul terminated wchar_t string (in platform's native
    // encoding) to UTF8.
    static CString      wideCharToUTF8(const wchar_t*,
                            UInt32 size, bool* errors);

    // internal conversion to UTF8
    static CString      doUCS2ToUTF8(const UInt8* src, UInt32 n, bool* errors);
    static CString      doUCS4ToUTF8(const UInt8* src, UInt32 n, bool* errors);
    static CString      doUTF16ToUTF8(const UInt8* src, UInt32 n, bool* errors);
    static CString      doUTF32ToUTF8(const UInt8* src, UInt32 n, bool* errors);

    // convert characters to/from UTF8
    static UInt32       fromUTF8(const UInt8*& src, UInt32& size);
    static void         toUTF8(CString& dst, UInt32 c, bool* errors);

private:
    static UInt32       s_invalid;
    static UInt32       s_replacement;
};

#endif