@echo off
setlocal enabledelayedexpansion
REM 设置开始日期
set start=2019-01-01
REM 设置结束日期
set end=2019-01-15
set /a sy=%start:~,4%,sm=1%start:~5,2%%%100,sd=1%start:~8,2%%%100,ey=%end:~,4%,em=1%end:~5,2%%%100,ed=1%end:~8,2%%%100,a=31
for %%a in (1 3 5 7 8 10 12 4 6 9 11) do (
    if %%a equ 4 set /a a-=1
    set /a _%%a=a
)
(for /l %%a in (%sy%,1,%ey%) do (
    set /a "_2=^!(%%a%%4)&^!(^!(%%a%%100))|^!(%%a%%400)+28"
    set /a a=1,b=12
    if "%%a" equ "%sy%" set /a a=sm
    if "%%a" equ "%ey%" set /a b=em
    for /l %%b in (!a!,1,!b!) do (
        set /a c=1,d=_%%b
        if "%%a%%b" equ "%sy%%sm%" set /a c=sd
        if "%%a%%b" equ "%ey%%em%" set /a d=ed
        for /l %%c in (!c!,1,!d!) do (
            for %%d in (%%b %%c) do set ".%%d=0%%d"&set ".%%d=!.%%d:~-2!"
            echo %%a-!.%%b!-!.%%c!
        )
    )
))>"%temp%\DateList.txt"

type nul >"结果.txt"
for /f %%a in ('type "%temp%\DateList.txt"') do (
    if exist "%%a*.txt" (
        type "%%a*.txt" >>"结果.txt"
    )
)
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@echo off
set "searchdir=."
set "searchpattern=????-??-?? *.txt"
set "newfile=.\new.txt"
set startdate=2019-01-01
set enddate=2019-01-15

cd . >"%newfile%"
for /f "delims=" %%A in ('where "%searchdir%:%searchpattern%"') do (
  for /f "tokens=1" %%B in ("%%~nxA") do (
    if %%B geq %startdate% (
        if %%B leq %enddate% (
          REM echo %%A
          copy /y /b "%newfile%"+"%%A"
          echo.>>"%newfile%"
        )
      )
  )
)
pause
exit /b
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