Rename Files using wildcard paths - batch-file

Question

Recently I started working and my first task is to write a batch file that automatically changes filenames to filename_date with the original file-ending.
For that you should be able to write paths into a textfile (e.g. paths.txt) and when you start the program, it should take any line (=path->file) from there and rename it.
I got it to work on my PC quiet well but as I gave it to testing they asked to make the use of wildcards Z:\Path\*.* possible.
My current code looks as follows:
#echo off
setlocal EnableDelayedExpansion
cd %~dp0
For /F "tokens=*" %%m in (paths.txt) do (
set path=%%~dpm
set name=%%~nxm
pushd "!path!"
dir
For /r !path! %%f in (!name!) do (
set path=%%~dpf
set name=%%~nf
set ending=%%~xf
set datsave=%%~nxf
set "name=!name!_"
set "name=!name!!date:~6,4!"
set "name=!name!!date:~3,2!"
set "name=!name!!date:~0,2!"
set "name=!name!!ending!"
copy "!datsave!" "!name!"
del "!datsave!"
cls
popd
)
)
I know that a lot of it is probably easier and more efficient to do, but this is my first batch project and I am quiet happy except for the wildcard problem.
So an example would be:
C:\Some\Path\*.*
This line would be in paths.txt.
With the splitting
set path=%%~dpf
set name=%%~nf
set ending=%%~xf
set datsave=%%~nxf
I get the following:
path: C:\Some\Path
name: C:\Some\Path
ending: -empty-
datsave: C:\Some\Path
because name is set to the Path at the start of the first FOR-Loop. But that seems to be working if I do not use wildcards.
Now the question: Why does this happen and how do I get rid of it? Or do I just use the wrong type of wildcards?
Again: This is my first time I work with batch, so it might be something simple ;)

Answer 1

Ok, I figured out 2 problems and now it works
set name=%%~nxm evaluates the wildcard. Even if name is *.txt it will return bar.txt.
I replaced that by a basename computation instead: set name=!name:*\=! done enough times (not very subtle but hey batch files forces us to do such things) which preserves the wildcard
The other problem is the for /R loop: after pushd, the argument needs to be . or it won't be scanned.
Last minor one: use rename instead of copy plus delete. It preserves file time and is very fast. Copying then deleting a large file can take a long time.
#echo off
set DEPTH=20
setlocal EnableDelayedExpansion
cd %~dp0
For /F %%m in (paths.txt) do (
set pth=%%~dpm
set z=%%m
set name=!z!
rem brutal basename. We cannot break the inner loop or
rem it would break the upper loop too
for /L %%I in (1,1,%DEPTH%) do set name=!name:*\=!
rem but we can check if it is really a basename
set chkname=!name:*\=!
if not !chkname!==!name! ( echo please increase DEPTH value
pause
exit /B)
rem set name=%%~nxm
pushd "!pth!"
For /r . %%f in (!name!) do (
set pth=%%~dpf
set name=%%~nf
set ending=%%~xf
set datsave=%%~nxf
set "name=!name!_!date:~6,4!!date:~3,2!!date:~0,2!!ending!
echo renaming "!datsave!" to "!name!"
rem ren "!datsave!" "!name!"
popd
)
)
paths.txt contains just a line C:\full\path\to\test\*.txt
my test directory contains 2 text files and 1 other file
output:
renaming "bar.txt" to "bar_20160812.txt"
renaming "foo.txt" to "foo_20160812.txt"
(just uncomment the ren line to get the job done)

Answer 2

Weeeeell First of all thanks again to #Jean-François Fabre and #aschipfl for their patience with me :)
After the hint with the second batch file I had to test a few things as not everything worked as fine, but now everything works great!
Code of the Main file:
#echo off
setlocal EnableDelayedExpansion
cd %~dp0
set DEPTH=20
For /F %%m in (paths.txt) do (
pause
set pth=%%~dpm
REM pushd !pth!
REM set origpth=!cd!
REM popd
set z=%%m
set name=!z!
For /L %%i in (1,1,%DEPTH%) do set
name=!name:*\=!
set chkname=!name:*\=!
if not !chkname!==!name! ( echo depth to small
pause
exit /B)
rem set name=%%~nxm
pushd "!pth!"
For /r . %%f in (!name!) do (
pushd %~dp0
call renamefiles.bat %%f REM "!origpth!"
popd
)
)
And the code of the sub-file:
#echo off
REM set pth=%~dp1
REM set origpth=%2
REM set origpth=%origpath:"=%\
REM If !pth!==%origpth% (
set path=%~dp1
set name=%~n1
set ending=%~x1
set datsave=%~nx1
pushd !path!
set "name=!name!_!date:~6,4!!date:~3,2!!date:~0,2!!ending!"
pause
echo renaming "!datsave!" to "!name!"
rem "!datsave!" "!name!"
cls
popd
REM )
EDIT: After testing around a bit I figured, that subfolders are included as well! I put extra code to both codes marked with REM and two extra spaces. Take out those REM's and the programm will not longer include subfolders when renaming :)