VC: MBCS字符集转换成UTF-8

// MBCS字符集转换成UTF-8，使用完了之后要释放返回的内存！

char* DataStore::MBCS2Utf8(char* szMBCS, ULONG* _out_length)

{

    if (szMBCS == NULL || _out_length == NULL)

        return NULL;

    // 方法：先转换成CP_ACP再转换成CP_UTF8

    int nLength = MultiByteToWideChar(CP_ACP, 0, szMBCS, -1, NULL, NULL);   // 获取缓冲区长度，再分配内存

    WCHAR *tch = new WCHAR[nLength];

     

    nLength = MultiByteToWideChar(CP_ACP, 0, szMBCS, -1, tch, nLength);     // 将MBCS转换成Unicode

 

    int nUTF8len = WideCharToMultiByte(CP_UTF8, 0, tch, nLength, 0, 0, 0, 0);   // 获取UTF-8编码长度

    char *utf8_string = new char[nUTF8len];

    WideCharToMultiByte(CP_UTF8, 0, tch, nLength, utf8_string, nUTF8len, 0, 0); //转换成UTF-8编码

    *_out_length = nUTF8len;

 

    delete tch;

    return utf8_string;

}