本帖最后由 cbnuisve 于 2015-8-11 10:38 编辑
在跨年份的时间得出的结果会出错。- @echo off
- setlocal enabledelayedexpansion
- set DaysAgo=7
- call :DateToDays %date:~0,4% %date:~5,2% %date:~8,2% PassDays
- set /a PassDays-=%DaysAgo%
- call :DaysToDate %PassDays% DstYear DstMonth DstDay
-
- set "yyyy=%DATE:~0,4%"
- echo %yyyy%%DstMonth%%DstDay%\
-
-
- :DateToDays %yy% %mm% %dd% days
- setlocal ENABLEEXTENSIONS
- set yy=%1&set mm=%2&set dd=%3
- if 1%yy% LSS 200 if 1%yy% LSS 170 (set yy=20%yy%) else (set yy=19%yy%)
- set /a dd=100%dd%%%100,mm=100%mm%%%100
- set /a z=14-mm,z/=12,y=yy+4800-z,m=mm+12*z-3,j=153*m+2
- set /a j=j/5+dd+y*365+y/4-y/100+y/400-2472633
- endlocal&set %4=%j%&goto :EOF
-
- :DaysToDate %days% yy mm dd
- setlocal ENABLEEXTENSIONS
- set /a a=%1+2472632,b=4*a+3,b/=146097,c=-b*146097,c/=4,c+=a
- set /a d=4*c+3,d/=1461,e=-1461*d,e/=4,e+=c,m=5*e+2,m/=153,dd=153*m+2,dd/=5
- set /a dd=-dd+e+1,mm=-m/10,mm*=12,mm+=m+3,yy=b*100+d-4800+m/10
- (if %mm% LSS 10 set mm=0%mm%)&(if %dd% LSS 10 set dd=0%dd%)
- endlocal&set %2=%yy%&set %3=%mm%&set %4=%dd%&goto :EOF
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