CODEWITHSUNDEEP
windowsfor-loopbatch-filecmdfindstr
mEm
mEm

Reputation: 373

Manipulate path string BATCH

I need to process a full path to a file, i.e. C:\fold1\fold2...\foldN\filename.dat in order to get the parent file folder and file name separately, that is root=C:\fold1\fold2...\foldN and file=filaname.dat.

This because I want to generalise a call to a program no matter from where you call the main .bat (this one), such to be able to perform a pushd to %root% before calling this specific program.

I am working at this, but I get stack when posing line=%%c:

: before remove quotes from %var%
set var=%var:"=%

if exist %temp% (
    if exist %temp%\filepath.txt del %temp%\filepath.txt
    echo %var% > %temp%\filepath.txt
)
for /f "tokens=1,* delims= " %%z in (%temp%\filepath.txt) do (
    set line=%%z
    echo Line writes %line%.
    set root=empty
    goto :processtoken
)

:processtoken
for /f "tokens=1,* delims=\" %%b in ("%line%") do (
    echo %%b
    echo %%c
    set  line=%%c rem this does not work, why??
    echo Now line writes %line%

    if "%root%"=="empty" (
        echo [INFO] Root is empty, initialising..
        echo %%c
        set root=%%c
    ) else (
        set root=%root%\%%c
    )
    echo Root is %root%
    goto :end
)

The problem I am facing is that when I print to see how %line% has changed, it shows that %line% (after set line=%%c corresponds to the FULL PATH (while my intention is to recursively get to the file name, I still need to add the condition in finding the "\" string in %%c, when not present anymore it will mean we got to the final step, i.e. %root% will now correspond to the final root folder).

Thanks to who will try to help me resolving this issue.

EDIT: this main program is called as follow:

prog arg1 arg2 arg3 arg4 arg5

arg5 is the path to the file which will internally be the argument for this other program. To be as general as possible I want to made functional this program no matter from where you call it. Still you have two options:

The problem is in case 2, since this internal program works properly when you call it from root directory and you pass to it only FILENAME.DAT.

This is why I posed this question. %var% is simply arg5, in the ways I explained hereby.

I hope I have been a little more clear than before.

PS. I'm not an experienced programmer in all ways, so I do apologise if I miss in clearance and professionalism. The write/read from/to %temp% folder was just to exploit a newer way of programming in batch, nothing else. I knew it was superfluous.

Upvotes: 0

Views: 2470

Answers (3)

lit
lit

Reputation: 16236

Another way to do this in a batch-file would be to use the PowerShell Split-Path command designed to do this.

SET "THEFILE=%TEMP%\file path.txt"
FOR /F "delims=" %%A IN ('powershell -NoLogo -NoProfile -Command
    """$([Convert]::ToChar(34))$(Split-Path -Path """%THEFILE%""")$([Convert]::ToChar(34)) $([Convert]::ToChar(34))$(Split-Path -Path """%THEFILE%""" -Leaf)$([Convert]::ToChar(34))"""') DO (
    SET "FILESTRING=%%A"
)

SET "PATHPART="
FOR %%A IN (%FILESTRING%) DO (
    IF NOT DEFINED PATHPART (SET "PATHPART=%%~A") ELSE (SET "FILEPART=%%~A")
)
ECHO PATHPART is "%PATHPART%"
ECHO FILEPART is "%FILEPART%"

Of course, it is easier if the script is written for PowerShell.

$TheFile = "$Env:TEMP\filepath.txt"
$PathPart = Split-Path -Path $TheFile
$FilePart = Split-Path -Path $TheFile -Leaf

UPDATE:

Actually, it appears that splitting the path is not needed to use PUSHD. Just add \.. to the end.

PUSHD C:\Users\joe\afile.txt\..

Upvotes: -1

Stephan
Stephan

Reputation: 56180

since you mentioned set var=%5 in a comment:

set "root=%~dp5"
set "file=%~nx5"

should be all you need. See call /? for more details.

Upvotes: 2

jeb
jeb

Reputation: 82297

You should take a look at the for-variable modifiers (FOR /?)

root=%%~dpz is used to expand to: d=drive and p=path of z
file=%%~nxz is used to expand to: n=name and x=extension of z

Then you can change your block to

for /f "tokens=1,* delims= " %%z in (%temp%\filepath.txt) do (
    set "line=%%z"
    set "root=%%~dpz"
    set "file=%%~nxz"
    REM ** Show the variables
    set root
    set file
)

Upvotes: 1

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