:loop_alp
set char=%char:*,=%
:check_alp
for /f "tokens=1 delims=," %%i in ("%char%") do (
echo "M T W Th F S Su"|findstr /i "%%i">nul || goto date_error
echo "%char%"|find ",">nul && goto loop_alp
)
goto input_time
:check_numerical_date
call :check_num
:loop_num
set /a num+=1
set char=%char:*,=%
:check_num
for /f "tokens=1 delims=," %%i in ("%char%") do set input=%%i
if %input% GTR 31 goto date_error
if %num% GTR 30 goto date_error
echo %char%|find ",">nul || if %num% LEQ 30 goto input_time || goto date_error
goto loop_num
:input_time
cls
color 1f
title 文件备份器-请输入时间
echo.
echo ╭────────╮
echo ╭─────────┤ 请输入备份时间 ├─────────╮
echo │ ╰────────╯ │
echo │ 操作说明： │
echo │ │
echo │ 请按格式输入备份时间，多个时间用空格 │
echo │ │
