Batch xcopy - Quelle und Ziel zeilenweise aus txt-Dateien entnehmen

> @ECHO OFF &SETLOCAL
> set "tfileA=ta.txt"  
> set "tfileB=tb.txt"  
> 
> for /f "tokens=1*delims=:" %%a in ('findstr /n $ "%tfileA%"') do set "$a%%a=%%b"&set  
> /a foldersA=%%a
> for /f "tokens=1*delims=:" %%a in ('findstr /n $ "%tfileB%"') do set "$b%%a=%%b"&set  
> /a foldersB=%%a
> if "%foldersA%"=="%foldersB%" (echo %foldersA% folder(s^) found in %tfileA%.) else echo Folder mismatch:  
> %tfileA%:%foldersA% - %tfileB%:%foldersB%&goto:eof
> :loopFd
> set /a countFd+=1
> call:folderchk "%%$a%countFd%%%"="%%$b%countFd%%%"  
> if %countFd% lss %foldersA% goto:loopFd
> goto:eof
> 
> :folderchk
> setlocal
> set "tfileEx=%temp%\%random%.tmp%"  
> for /f "delims=" %%a in ("%tfileEx%") do set "tfileEx=%%~sa"  
> for %%a in ("%~1\*") do call:exceptionchk "%%~a" "%~2" "%tfileEx%"  
> set "cmdline=/dyl"  
> if exist "%tfileEx%" set "cmdline=%cmdline% /EXCLUDE:%tfileEx%"  
> xcopy "%~1" "%~2" %cmdline%   
> if exist "%tfileEx%" del "%tfileEx%"  
> endlocal
> exit /b
> 
> :exceptionchk
> setlocal
> for /f "delims=" %%a in ('dir /b /a-d "%~2\%~nx1" "%~2\%~n1_???%~x1" 2^>nul') do set  
> "last=%%~a"  
> if not defined last goto:return
> for /f "delims=" %%a in ("%~2\%last%") do set "lastsize=%%~za"  
> if "%~nx1"=="%last%" if "%~z1"=="%lastsize%" goto:return  
> for /f "delims=" %%a in ("%last%") do set "pfx=%%~na"  
> for /f "tokens=*delims=0" %%a in ("%pfx:~-3%") do set /a sfx=%%~a 2>nul&&set /a sfx+=1||set /a  
> sfx=1 
> if %sfx%==1 set "pfx=%~n1_000"  
> set "sfx=000%sfx%"  
> set "sfx=%sfx:~-3%"  
> set "nname=%pfx:~0,-3%%sfx%%~x1"  
> echo Exception: %~nx1 --^> %nname%
> echo(f|xcopy /yl "%~1" "%~2\%nname%" >nul  
> >>"%~3" echo(%~1  
> :return
> endlocal
> exit /b
>