mktime有时会返回-1使用boost库没有问题

原创

已于 2023-08-17 16:05:38 修改 · 423 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#c语言 #linux #c++ #boost

于 2023-08-17 16:05:18 首次发布

本文介绍了如何使用C++在Linux中，通过`boost::date_time`库将UTC时间戳转换为POSIX时间和字符串格式，包括函数`utc8_to_stamp`和`utc8_str_to_stamp`的具体实现。

linux获得时间戳

#include <iostream>
#include <boost/date_time/posix_time/posix_time.hpp>
long long utc8_to_stamp(int date, float time)
{
    struct tm stm;
    int itime = (time);
    int iY= date/10000,iM=(date-iY*10000)/100,iD=date%100,iH=itime/10000,iMin=(itime-iH*10000)/100,iS=itime%100;
  
    printf("%d , %d , %d, %d, %d,%d\n", iY, iM,iD,iH,iMin,iS);
    stm.tm_year=iY-1900;
    stm.tm_mon=iM-1;
    stm.tm_mday=iD;
    stm.tm_hour=iH;
    stm.tm_min=iMin;
    stm.tm_sec=iS;
printf("%lld\n",(mktime(&stm)*1ll) );
    return (long long)(mktime(&stm));
}
void getDate(long long ts, char* str)// time to local time
{
    time_t t;
    struct tm *p;
    char s[100];
 
    t = ts ;//+ 28800;
    uint8_t  nn,yy,rr,ss,ff,mm;
    p = localtime( &t );
 
    strftime(s, sizeof(s), "%Y%m%d,%H%M%S", p);
    strcpy(str, s);
}
//1691188920
//1691102744
long long utc8_str_to_stamp(char *date, char* time)
{
    struct tm stm;
    int iY,iM,i