C语言获取编译日期时间和系统时间-EDA365

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C语言获取编译日期时间和系统时间

发布时间：

int GetCompileDateTime(char *szDateTime)

{
        const int  MONTH_PER_YEAR=12;
        const char szEnglishMonth[MONTH_PER_YEAR][4]={ "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
        char szTmpDate[40]={0};
        char szTmpTime[20]={0};
        char szMonth[4]={0};
        int iYear,iMonth,iDay,iHour,iMin,iSec;//,,

        //获取编译日期、时间
        sprintf(szTmpDate,"%s",__DATE__); //"Sep 18 2010"
        sprintf(szTmpTime,"%s",__TIME__);    //"10:59:19"

        sscanf(szTmpDate,"%s %d %d",szMonth,&iDay,&iYear);
        sscanf(szTmpTime,"%d:%d:%d",&iHour,&iMin,&iSec);

        for(int i=0;MONTH_PER_YEAR;i++)
        {
                if(strncmp(szMonth,szEnglishMonth[i],3)==0)
                {
                        iMonth=i+1;
                        break;
                }
        }

        printf("%d,%d,%d,%d,%d,%d ",iYear,iMonth,iDay,iHour,iMin,iSec);
        sprintf(szDateTime,"dddddd",iYear,iMonth,iDay,iHour,iMin,iSec);
        return 0;
}

typedef struct
{
    unsigned int Year;
    unsigned int Month;
    unsigned int Date;
    unsigned int Hours;
    unsigned int Minutes;
    unsigned int Seconds;
}BuildDateTime;

const unsigned char MonthStr[12][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov","Dec"};

void GetBuildDateTime(BuildDateTime *p_BuildDateTime)
{
    unsigned char temp_str[4] = {0, 0, 0, 0}, i = 0;

    sscanf(__DATE__, "%s - M", temp_str, &(p_BuildDateTime->Date), &(p_BuildDateTime->Year));
    sscanf(__TIME__, "-:-:-", &(p_BuildDateTime->Hours), &(p_BuildDateTime->Minutes), &(p_BuildDateTime->Seconds));
    for (i = 0; i 12; i++)
    {
        if (temp_str[0] == MonthStr[i][0] && temp_str[1] == MonthStr[i][1] && temp_str[2] == MonthStr[i][2])
        {
            p_BuildDateTime->Month = i + 1;
            break;
        }
    }
}

使用方法示例:

BuildDateTime MyBuildDateTime;

GetBuildDateTime(&MyBuildDateTime);

RTC_YEAR = MyBuildDateTime.Year;
RTC_MONTH = MyBuildDateTime.Month;
RTC_DATE = MyBuildDateTime.Date;
RTC_HOURS = MyBuildDateTime.Hours;
RTC_MINUTES = MyBuildDateTime.Minutes;
RTC_SECONDS = MyBuildDateTime.Seconds;

__LINE__ 当前语句所在的行号, 以10进制整数标注.
__FILE__ 当前源文件的文件名, 以字符串常量标注.
__DATE__ 程序被编译的日期, 以"Mmm dd yyyy"格式的字符串标注.
__TIME__ 程序被编译的时间, 以"hh:mm:ss"格式的字符串标注, 该时间由asctime返回.

__STDC__ 如果当前编译器符合ISO标准, 那么该宏的值为1
__STDC_VERSION__ 如果当前编译器符合C89, 那么它被定义为199409L, 如果符合C99, 那么被定义为199901L.

__STDC_HOSTED__ 如果当前系统是"本地系统(hosted)", 那么它被定义为1. 本地系统表示当前系统拥有完整的标准C库.

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