UTC 转 LocalTime

/*使用unsigned const char*纯碎是为了配合项目,改成char*会比较通用些*/
BOOL CDllSuiteEngine::Time_StrToType(unsigned const char* lpszValue, SYSTEMTIME &time)
{
    if (!lpszValue)
    {
        return FALSE;
    }

    int         nYear   = 0;
    int         nMonth  = 0;
    int         nDay    = 0;
    int         nHour   = 0;
    int         nSecond = 0;
    int         nMinute = 0;
    int         nMilliSecond = 0;
    CString  str     = lpszValue;

    sscanf(str, _T("%d-%d-%dT%d:%d:%d.%dZ"), &nYear, &nMonth, &nDay, &nHour, &nMinute, &nSecond,&nMilliSecond);

    //     if (nMonth==0 || nDay==0)
    //     {
    //         _stscanf(str, _T("%d/%d/%d %d:%d:%d"), &nYear, &nMonth, &nDay, &nHour, &nMinute, &nSecond);
    //     }

    time.wYear   = nYear;
    time.wMonth  = nMonth;
    time.wDay    = nDay;
    time.wHour   = nHour;
    time.wSecond = nSecond;
    time.wMinute = nMinute;
    time.wMilliseconds = nMilliSecond;//MUST be set, or all member of converted local time is 52428

    return TRUE;
}


void CDllSuiteEngine::Time_UTCToLocal(SYSTEMTIME& tUTC, SYSTEMTIME& tLocal)
{
    //e.g. "2013-06-23T19:10:57.000Z";
    TIME_ZONE_INFORMATION timeZomeInfo;
    ::GetTimeZoneInformation(&timeZomeInfo);
    ::SystemTimeToTzSpecificLocalTime(&timeZomeInfo, &tUTC, &tLocal); //Careful: member MilliSeconds must be set.
}

void CDllSuiteEngine::Time_TypeToStr(SYSTEMTIME tType,CString& szTime)
{
    szTime.Empty();
    szTime.Format(_T("%04d-%02d-%02d %02d:%02d:%02d"), tType.wYear, tType.wMonth, tType.wDay, tType.wHour, tType.wMinute, tType.wSecond);
}

void CDllSuiteEngine::Time_UTCStrToLocalStr(unsigned const char* szUTC,CString& cLocal)
{
    cLocal.Empty();
    if(!szUTC)
        return;

    SYSTEMTIME tUTC;
    SYSTEMTIME tLocal;
    if(Time_StrToType(szUTC, tUTC))
    {
        Time_UTCToLocal(tUTC, tLocal);
        Time_TypeToStr(tLocal, cLocal);
    }
}

void main()
{
    CString cLocalTime;
    Time_UTCStrToLocalStr("2013-06-23T19:10:57.000Z",cLocalTime);
    //output..
}

北京      UTC+8
Hawaii    UTC-10

posted @ 2014-08-15 11:55  Tup  阅读(571)  评论(0编辑  收藏  举报