C++ boost 时间与日期处理详细介绍
boost时间与日期处理
导视：
折中的办法是重新显示pd.restart(size);pd+=pNum;
#include<boost/timer.hpp>
#include<boost/progress.hpp>
#include<iostream>
#include<sstream>
#include<fstream>
#include<string>
#include<vector>
#include<Windows.h>
#include<boost/date_time/gregorian/gregorian.hpp>
#include<boost/date_time/posix_time/posix_time.hpp>
usingnamespacestd;
intmain()
{
boost::timert;
std::cout<<"Max"<<t.elapsed_max()<<endl;
std::cout<<"Min"<<t.elapsed_min()<<endl;
std::cout<<"elapsed:"<<t.elapsed()<<endl;
t.restart();
Sleep(100);
std::cout<<"elapsed:"<<t.elapsed()<<endl;
cout<<"---------------------------"<<endl;
stringstreamss;
{
boost::progress_timert(ss);
Sleep(300);
}
cout<<ss.str();
cout<<"---------------------------"<<endl;
vector<string>v(100);
//DoDataFill......
ofstreamfs("c:\test.txt");
boost::progress_displaypd(v.size());
vector<string>::iteratorpos;
for(pos=v.begin();pos!=v.end();++pos)
{
fs<<*pos<<endl;
Sleep(10);
++pd;
//pd.restart(v.size());
//pd+=(pos-v.begin()+1);
}
cout<<"---------------------------"<<endl;
{
usingnamespaceboost::gregorian;
cout<<"-----------------date------------------"<<endl;
dated1;
dated2(2013,4,7);
dated3(2013,Apr,7);
dated4(d2);
assert(d1==date(not_a_date_time));//默认初始化为无效日期
assert(d2==d4);
assert(d3==d2);
d1=from_string("1999,9,9");
dated5(from_string("2008/8/8"));
d3=from_undelimited_string("20110111");
cout<<day_clock::local_day()<<endl;
cout<<day_clock::universal_day()<<endl;
dated6(neg_infin);
dated7(pos_infin);
cout<<d6<<endl;
cout<<d7<<endl;
cout<<"---------------------------"<<endl;
datetoday(2013,4,17);
assert(today.year()==2013);
assert(today.month()==4);
assert(today.day()==17);
date::ymd_typeymd=today.year_month_day();
assert(ymd.year==2013);
assert(ymd.month==4);
assert(ymd.day==17);
assert(today.day_of_week()==3);//星期几周日为0
cout<<today.day_of_year()<<endl;//在一年中是第几天
assert(today.end_of_month()==date(2013,4,30));//当月的最后一天
cout<<today.week_number()<<endl;//当年的第几周范围0~53年初的半周归为上一年，即53
assert(d6.is_infinity());//日期为无限日期
assert(d6.is_neg_infinity());
cout<<"---------------------------"<<endl;
cout<<to_simple_string(today)<<endl;
cout<<to_iso_string(today)<<endl;
cout<<to_iso_extended_string(today)<<endl;//常用日期格式YYYY-MM-DD
cout<<today<<endl;
cout<<"---------------------------"<<endl;
tmt=to_tm(today);
assert(t.tm_hour==0&&t.tm_min==0);
datenew_today=date_from_tm(t);//从tm转为date
assert(new_today==today);
cout<<"--------------days(date_duration)--------------"<<endl;
daysdd1(10),dd2(-20),dd3(365);
assert(dd1>dd2&&dd1<dd3);
assert(dd1+dd2==days(-10));
assert((dd2+dd3).days()==345);
assert(dd3/5==days(73));
weeksw(3);//3个星期
assert(w.days()==21);
monthsm(5);
yearsy(2);
monthsm2=y+m;
assert(m2.number_of_months()==29);
assert((y*2).number_of_years()==4);
cout<<"--------------Calc--------------"<<endl;
datedA(2000,1,1),dB(2008,8,8);
cout<<dB-dA<<endl;//3142天
dA+=days(10);
assert(dA.day()==11);
dA+=months(2);
assert(dA.month()==3&&dA.day()==11);
dA-=weeks(1);
assert(dA.day()==4);
dB-=years(7);
assert(dA.year()==dB.year()-1);
//如果日期是月末的最后一天，加减月或年会得到月末的时间，而不是简单的月、年加1
datesp(2013,3,30);
sp-=months(1);
assert(sp.month()==2&&sp.day()==28);
sp-=months(1);
assert(sp.month()==1&&sp.day()==31);
sp+=months(2);
assert(sp.day()==31);//与原来的日期已经不相等！
cout<<"--------------date_period--------------"<<endl;
date_perioddp(date(2013,4,17),days(14));//左开右闭与STL的容器相似
assert(!dp.is_null());
assert(dp.begin().day()==17);
assert(dp.last().day()==30);
assert(dp.end().day()==1);
cout<<dp<<endl;
date_periodnew_dp=dp;
new_dp.shift(days(3));//将时间区间向后移动
assert(new_dp.begin().day()==20);
assert(new_dp.length().days()==14);
new_dp.expand(days(3));//区间两段延长n天，即延长2n天。
assert(new_dp.begin().day()==17);
assert(new_dp.length().days()==20);
assert(dp.is_after(date(2013,1,1)));
assert(dp.contains(date(2013,4,20)));
date_perioddp2(date(2013,4,17),days(5));
assert(dp.contains(dp2));
assert(dp.intersects(dp2));//交集
assert(dp.intersection(dp2)==dp2);
date_perioddp3(date(2013,5,1),days(5));
assert(!dp3.intersects(dp));
assert(dp3.intersection(dp2).is_null());
assert(dp.is_adjacent(dp3));
date_perioddp4(date(2013,4,17),days(19));//并集
assert(dp.merge(dp3).is_null());//无交集返回空
assert(dp.span(dp3)==dp4);//填充中间区域
cout<<"--------------date_iterator--------------"<<endl;
datelast(2013,4,17);
day_iteratord_iter(last);//日期迭代器
assert(d_iter==last);
++d_iter;
assert(d_iter==date(2013,4,18));
year_iteratory_iter(*d_iter,3);//增减步长为3
assert(y_iter==last+days(1));
++y_iter;
assert(y_iter->year()==2016);
cout<<"--------------func--------------"<<endl;
cout<<(gregorian_calendar::is_leap_year(2000)?"Yes":"no")<<endl;//闰年
assert(gregorian_calendar::end_of_month_day(2013,2)==28);//月末天
}
{
usingnamespaceboost::posix_time;
cout<<"--------------time_duration--------------"<<endl;
time_durationtd(1,1,1);//时、分、秒会自动借、进位
hoursh0(1);
minutesm(1);
secondss(1);
millisecms(1);
time_durationtd2=h0+m+s+ms;
time_durationtd3=hours(2)+minutes(10);
time_durationtd4=duration_from_string("1:10:10:300");
assert(td4.hours()==1&&td4.minutes()==10&&td4.seconds()==10);
assert(td.total_seconds()==1*3600+1*60+1);//转为sec
hoursh(-10);
assert(h.is_negative());
time_durationh2=h.invert_sign();//取反
assert(!h2.is_negative()&&h2.hours()==10);
cout<<td3-td2<<endl;
cout<<to_simple_string(td4)<<endl;
cout<<to_iso_string(td4)<<endl;
cout<<"--------------ptime--------------"<<endl;
{
usingnamespaceboost::gregorian;
ptimep(date(2013,4,17),hours(1));//ptime相当于date+time_duration
ptimep1=time_from_string("2013-4-1716:25:00");
cout<<p<<endl;
cout<<p1<<endl;
ptimep2=second_clock::local_time();//常用时间输出
ptimep3=microsec_clock::universal_time();//微秒精度
cout<<p2<<endl<<p3<<endl;
ptimeop(date(2013,4,17),hours(1)+minutes(30));
dated=op.date();
time_durationoptd=op.time_of_day();
assert(d.day()==17&&d.month()==4);
assert(optd.hours()==1&&optd.minutes()==30);
cout<<to_iso_extended_string(op)<<endl;
tmt=to_tm(op);//不可逆，此处与date不同
//只能用date_from_tm先得到日期，再填充时间。
cout<<"--------------time_period--------------"<<endl;
time_periodtp1(op,hours(8));
time_periodtp2(op+hours(8),hours(1));
assert(tp1.end()==tp2.begin()&&tp1.is_adjacent(tp2));
assert(!tp1.intersects(tp2));
tp1.shift(hours(1));
assert(tp1.is_after(op));
assert(tp1.intersects(tp2));
tp2.expand(hours(10));
assert(tp2.contains(op)&&tp2.contains(tp1));
cout<<"--------------time_iterator--------------"<<endl;
for(time_iteratort_iter(op,minutes(10));t_iter<op+hours(1);++t_iter)
{
cout<<*t_iter<<endl;
}
cout<<"--------------formate--------------"<<endl;
date_facet*dfacet=newdate_facet("%Y年%m月%d日");
cout.imbue(locale(cout.getloc(),dfacet));
cout<<date(2013,4,17)<<endl;
time_facet*tfacet=newtime_facet("%Y年%m月%d日%H点%M分%S%F秒");
cout.imbue(locale(cout.getloc(),tfacet));
cout<<op<<endl;
}
}
getchar();
return0;
}
运行结果：Max2.14748e+006 Min0.001 elapsed:0.001 elapsed:0.1 --------------------------- 0.30s --------------------------- 0%102030405060708090100% |----|----|----|----|----|----|----|----|----|----| *************************************************** --------------------------- -----------------date------------------ 2013-Apr-17 2013-Apr-17 -infinity +infinity --------------------------- 107 16 --------------------------- 2013-Apr-17 20130417 2013-04-17 2013-Apr-17 --------------------------- --------------days(date_duration)-------------- --------------Calc-------------- 3142 --------------date_period-------------- [2013-Apr-17/2013-Apr-30] --------------date_iterator-------------- --------------func-------------- Yes --------------time_duration-------------- 01:08:58.999000 01:10:10.300000 011010.300000 --------------ptime-------------- 2013-Apr-1701:00:00 2013-Apr-1716:25:00 2013-Apr-1717:19:21 2013-Apr-1709:19:21.870604 2013-04-17T01:30:00 --------------time_period-------------- --------------time_iterator-------------- 2013-Apr-1701:30:00 2013-Apr-1701:40:00 2013-Apr-1701:50:00 2013-Apr-1702:00:00 2013-Apr-1702:10:00 2013-Apr-1702:20:00 --------------formate-------------- 2013年04月17日 2013年04月17日01点30分00秒
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