利用宏定义__DATE__和__TIME__做软件版本控制

利用C的预定义符号__DATE__和__TIME__获取软件编译时间，可用来设置系统默认时间或者作为版本更新时间

# include <stdio.h> # include <stdlib.h> #include "..MALLOCmalloc.h"

//时间结构体 typedef struct { vu8 nHour; vu8 nMinute; vu8 nSecond;

//公历日月年周 vu8 nMonth; vu8 nDay; vu8 nWeek; vu16 nYear;

} RTC_TIME_DEF;

//字符串截取 char *myStrncpy(char *dest, const char *src, int n) { int size = sizeof(char)*(n + 1); char *tmp = (char*)mymalloc(size); // 开辟大小为n+1的临时内存tmp

if (tmp) { memset(tmp, , size); // 将内存初始化为0 memcpy(tmp, src, size - 1); // 将src的前n个字节拷贝到tmp memcpy(dest, tmp, size); // 将临时空间tmp的内容拷贝到dest

myfree(tmp); // 释放内存 return dest; } else { return NULL; } }

//得到软件编译时间 RTC_TIME_DEF GetSoftWareBuildTargetTime(void) { char arrDate[20]; //Jul 03 2018 char arrTime[20]; //06:17:05 char pDest[20]; RTC_TIME_DEF stTime;

sprintf(arrDate,"%s",__DATE__);//Jul 03 2018 sprintf(arrTime,"%s",__TIME__);//06:17:05 //char *strncpy(char *dest, const char *src, int n) //(char*)(&(pDest[0])) = myStrncpy(pDest, arrDate, 3); sprintf(pDest, "%s", myStrncpy(pDest, arrDate, 3));

if (strcmp(pDest, "Jan") == 0) stTime.nMonth = 1; else if (strcmp(pDest, "Feb") == 0) stTime.nMonth = 2; else if (strcmp(pDest, "Mar") == 0) stTime.nMonth = 3; else if (strcmp(pDest, "Apr") == 0) stTime.nMonth = 4; else if (strcmp(pDest, "May") == 0) stTime.nMonth = 5; else if (strcmp(pDest, "Jun") == 0) stTime.nMonth = 6; else if (strcmp(pDest, "Jul") == 0) stTime.nMonth = 7; else if (strcmp(pDest, "Aug") == 0) stTime.nMonth = 8; else if (strcmp(pDest, "Sep") == 0) stTime.nMonth = 9; else if (strcmp(pDest, "Oct") == 0) stTime.nMonth = 10; else if (strcmp(pDest, "Nov") == 0) stTime.nMonth = 11; else if (strcmp(pDest, "Dec") == 0) stTime.nMonth = 12; else stTime.nMonth = 1;

sprintf(pDest, "%s", myStrncpy(pDest, arrDate+4, 2)); //int atoi(const char *nptr); stTime.nDay = atoi(pDest);

sprintf(pDest, "%s", myStrncpy(pDest, arrDate + 4 + 3, 4)); //int atoi(const char *nptr); stTime.nYear = atoi(pDest);

//time sprintf(pDest, "%s", myStrncpy(pDest, arrTime, 2)); stTime.nHour = atoi(pDest); sprintf(pDest, "%s", myStrncpy(pDest, arrTime+3, 2)); stTime.nMinute = atoi(pDest); sprintf(pDest, "%s", myStrncpy(pDest, arrTime + 3 + 3, 2)); stTime.nSecond = atoi(pDest);

return stTime; }