GBK与Unicode的转换

一、GBK转换到Unicode编码

std::string Gbk2Unicode(std::string &strValue)

{

    std::string strReturn;

    unsigned char chTemp;

    int nLength = strValue.length()*+;

    WCHAR *pwchBuf = new WCHAR[nLength];

    memset(pwchBuf, , sizeof(WCHAR) * nLength);

    MultiByteToWideChar(CP_ACP, , strValue.c_str(), -, (LPWSTR)pwchBuf, nLength);

    for (size_t i = ; i < wcslen(pwchBuf); i++)

    {

        strReturn += "\\u";

        chTemp = *((unsigned char*)pwchBuf+i*+);

        if(chTemp)

        {

            strReturn += m_clsmyOpenssl.char_to_hex( (unsigned char)(chTemp >> ) );

            strReturn += m_clsmyOpenssl.char_to_hex( (unsigned char)(chTemp % ) );

        }

        chTemp = *((unsigned char*)pwchBuf+i*);

        strReturn += m_clsmyOpenssl.char_to_hex( (unsigned char)(chTemp >> ) );

        strReturn += m_clsmyOpenssl.char_to_hex( (unsigned char)(chTemp % ) );

    }

    delete[]pwchBuf;

    pwchBuf = NULL;

    return strReturn;

}

二、Unicode转换到GBK编码

std::string Unicode2GBK(std::string &strValue)

{

    std::vector<std::string> vcString;

    MyTools::SplitString(strValue, "\\u", vcString);

    wchar_t* pwBuf = new wchar_t[strValue.length() + ];

    memset(pwBuf, , (strValue.length() + )* sizeof(wchar_t));

    int j();

    for(std::vector<std::string>::iterator it = vcString.begin(); it != vcString.end(); ++it)

    {

        if (it->empty())

        {

            continue;

        }

        unsigned short wcTmp = ;

        unsigned char cTmp = ;

        //因为有中文字符混合ASSCII码情况,所以条件为k < it->length()

        for(size_t k = ; k < it->length(); ++k)

        {

            cTmp = (unsigned char)(*it)[k];

            if(cTmp <= '')//0x30~0x39 即0~9

            {

                wcTmp |= (cTmp & 0x0f) << (it->length() - k - ) * ;

            }

            else if(cTmp >= 'a')//0x61~7a 即a~z

            {

                wcTmp |= (cTmp - 0x57) << (it->length() - k - ) * ;

            }

            else//0x41~5a 即A~Z

            {

                wcTmp |= (cTmp - 0x37) << (it->length() - k - ) * ;

            }

        }

        pwBuf[j++] = (wchar_t)wcTmp;

    }

    char *pDst = new char[strValue.length() + ];

    memset(pDst, , (strValue.length() + ) * sizeof(char));

    WideCharToMultiByte(CP_ACP, , pwBuf, -, (char*)pDst, strValue.length() - , NULL, NULL);

    std::string strRet(pDst);

    delete[]pwBuf;

    pwBuf= NULL;

    delete[]pDst;

    pDst=NULL;

    return strRet;

}