std::list<std::string> split_utf8_string(const std::string& text)

{

    std::list<std::string> temp;

    do

    {

        if (text.length() <= )

            break;

        std::string::const_iterator begin = text.begin();

        std::string::const_iterator end   = text.end();

        while (begin != end)

        {

            unsigned char c = *begin;

            int n = ;

            if ((c & 0x80) == )

                n = ;

            else if ((c & 0xE0) == 0xC0)

                n = ;

            else if ((c & 0xF0) == 0xE0)

                n = ;

            else if ((c & 0xF8) == 0xF0)

                n = ;

            else if ((c & 0xFC) == 0xF8)

                n = ;

            else if ((c & 0xFE) == 0xFC)

                n = ;

            else

                break;

            if (end - begin < n)

                break;

            std::string substring;

            substring += *begin;

            bool isError = false;

            for (int i=; i<n; ++i)

            {

                if ((begin[i] & 0xC0) != 0x80)

                {

                    isError = true;

                    break;

                }

                substring += begin[i];

            }

            if (isError)

                break;

            temp.push_back(substring);

            begin += n;

        }

    }

    while (false);

    return temp;

}