Get a part of the current path - windows

I would like to get a part of the current directory where my batch script is from.
The location is something like this : Y:\abc\def\ghi\jkl\script.bat
I just want to keep what's after Y:\abc\def\  (that is \ghi\jkl)
How to do this ?
I'm using the code below for getting the full path but how to make a delimitation ?
for /f %%a in ("%CD%") do set CURR=%%a
echo %CURR%
Thank you for your precious help.

Based upon your stated "directory where my batch script is from", the following should suffice, (the last line is added for demonstration purposes, please change it as necessary):
#Set "x=%~dp0"&SetLocal EnableDelayedExpansion
#Set "i=0"&Set "x!i!=%x:\="&Set /A i+=1&Set "x!i!=%"
#Set /A i-=1,y=i-1
#If %i% Lss 1 (Set "z=%x0%\")Else (If %i% Equ 1 (Set "z=%x0%\%x1%"
)Else Set "z=!x%y%!\!x%i%!")
#EndLocal&Set "y=%z%"
#Echo %x% becomes %y%&Pause
I have made it so that if the scripts directory isn't deep enough, the full path will still be output.
If you want to use the current directory instead of the scripts location, change %~dp0 on line 1 to %__CD__% or %CD%\ as needed.

I believe that maybe you could put the section to be cut inside a txt file and then manipulate the string from the loop in the file, like this:
echo %cd% > path.txt
for /f "tokens=3,* delims=\" %%a in (path.txt) do echo %%b
Determining the depth with the argument tokens=3 with the delimiter character being "\".

#echo off
setlocal
set "reversed="
set "fromdir=%~dp0"
for %%A in ("%fromdir:\=" "%") do call set "reversed=%%~A\%%reversed%%"
for /f "tokens=1-2 delims=\" %%A in ("%reversed%") do set "result=\%%B\%%A"
echo %result%
pause
If the path segments can be reversed, then getting the last 2 segments is a known number for setting the tokens option of 1-2 as they would become the 1st 2 segments. The 1st for loop does the reversing. The 2nd for loop gets the 1st 2 tokens and is set to result in reverse order, which is the original order.
The fromdir is set for the script directory %~dp0, though it can be set with %cd% if is wanted.
View set /? for how "%fromdir:\=" "%" does replacement of \ with " " so that the path segments become individual arguments i.e. "C:\dir1\dir2\dir3" becomes "C:" "dir1" "dir2" "dir3".

Related

Batch script does not echo contents of a variable and pause not working

I am working on a script which iterates over every file in a specific folder and reads some information from, and numbers each.
So I am running over the files with a for-loop and that is working correctly. Now I added a variable i which should increment on each iteration of the loop.
I used set /a i=0 and inside the for-loop set /a i+=1 and this Set command does print the number to console. My problem now is that the set command prints the number, but when I echo the number with echo %i% it will always print 0 and not the increasing value. I also tried echo !i! but that does not work at all. It just prints !i! in the console.
I also added a pause command to the end of the script, but that gets ignored entirely.
This is my batch script:
#echo off
setlocal EnableDelayedExpansion
set /a i=0
for /r %%n in (Links\*.lnk) do (
set /a i+=1
echo.
echo [Button!i!Back]
get.bat "%%n"
)
pause
This is an example of the output:
45
[Button!i!Back]
###HudIcons\VLC media player.ico
D:\Programme\VideoLAN\VLC\vlc.exe
I also just realized, that for the first time the loop runs, the !i! does work correctly and prints the number, but not afterwards.
I know that I should probably not be calling the other batch file like this, but that is temporary.
Any ideas why this is behaving so weird?
Perhaps it would be easier for you without the Set /A incrementing method, and therefore no need for delayed expansion. The alternative methodology could involve using findstr.exe to provide the counting:
#Echo Off
SetLocal EnableExtensions DisableDelayedExpansion
For /F "Tokens=1,* Delims=:" %%G In ('Dir /B /S /A:-D "Links\*.lnk" ^
2^> NUL ^| %SystemRoot%\System32\findstr.exe /EILN ".lnk"') Do (Echo=
Echo [Button%%GBack]
Call "get.bat" "%%H")
Pause
You use percentages symbol to call a variable %Variable%
and to echo it echo %variable%
to set one set variable=value Hope this helps you.

Subtract 1 from FOR loop index in Windows batch

In Windows batch, I have a for loop like so:
for /l %%a in (0,1,337) do (
for /F "tokens=*" %%b IN ("tile%%a.jpg") DO set size=%%~zb
if !size! GTR 0 (
echo Size is greater than 0
) ELSE (
)
)
I know this code doesn't make much sense right now, but I'm going to develop it further. I just want to know how to subtract 1 from %%a in the ELSE statement. Basically I want to be able to "redo" a loop number when the IF isn't true, if that makes sense. Thanks.
You can't modify the value of a loop variable. You can only modify the value of an environment variable.
But why using for /L %%a in (0,1,337) do at all?
Better would be for example:
#echo off
for %%A in (tile*.jpg) do (
if %%~zA == 0 (
echo File size of %%A is 0 bytes.
) else (
echo File size of %%A is greater than 0.
)
)
This loop processes simply all tile*.jpg in current directory.
But this loop can't be used if files with 0 bytes are deleted in current directory. Processing the list of tile*.jpg files in current directory and change the files list in the same loop is no good idea because simply not working. The solution is using command DIR to get first the list of all files matching the file name pattern and next process the output of DIR line by line using FOR.
#echo off
setlocal EnableExtensions DisableDelayedExpansion
for /F "delims=" %%A in ('dir /A-D /B /OS tile*.jpg 2^>nul') do (
if %%~zA == 0 (
echo File size of %%A is 0 bytes.
) else (
echo First file with more than 0 bytes is: %%A
goto ExitLoop
)
)
:ExitLoop
endlocal
The command DIR is executed to output the list of files matching the pattern tile*.jpg with ignoring directories which by chance would be matched also by this wildcard pattern because of option /A-D in bare format (only file name) because option /B in order sorted by file size because of option /OS from smallest to largest file.
2^>nul redirects the error message output by command DIR to handle STDERR on not finding any file matching the wildcard pattern to device NUL to suppress this error message. The redirection operator > must be escaped here with caret character ^ to be interpreted as literal character on parsing the FOR command line and interpreted as redirection operator on execution of DIR command line by FOR.
The loop is immediately exited once a file with more than 0 bytes is found as all further files have surely also more than 0 bytes.
One more loop can be used after label ExitLoop which should be renamed to something more suitable in this case for example to renumber the remaining files using command REN when first loop deletes files with 0 bytes.
For understanding the used commands and how they work, open a command prompt window, execute there the following commands, and read entirely all help pages displayed for each command very carefully.
dir /?
echo /?
endlocal /?
for /?
goto /?
if /?
setlocal /?
See also the Microsoft article Using command redirection operators for an explanation of 2>nul.
You cannot modify the loop variable %%a. Only the loop itself can modify it.
If you want to calculate a new value you can do:
set /A NEW_VALUE=%%a-1
echo %NEW_VALUE% (prove that NewValue is now 1 smaller than %%a)
You cannot modify a for variable reference like %%a, but you can store its value into a standard environment variable (like index) and modify this. For this to work you need to enable and use delayed expansion, because the variable is modified and read within the same block of code, namely the loop body, so read it like !index!; using normal expansion like %index% returned the value present before the loop has even started:
#echo off
setlocal EnableDelayedExpansion
for /L %%a in (0,1,337) do (
set /A "index=%%a-1"
echo %%a - 1 = !index!
)
endlocal
A nice alternative that avoids need of delayed expansion is to use an embedded for /F loop that gets the output of the subtraction and iterates once only per iteration of the surrounding for /L loop, like this:
#echo off
for /L %%a in (0,1,337) do (
for /F %%b in ('set /A "%%a-1"') do (
echo %%a - 1 = %%b
)
)
This works because the for /F loop executes the set /A command in cmd context, in which it returns the resulting value -- in contrast to the aforementioned approach, where set /A is executed in batch-file context, in which it does not output anything.

identify or delete double quote char in batch script text stream or in a file

I have created command script for reading %N% lines from file. The problem is I can't delete " from anywhere in all text streams when I work with file's text. " deletion is very needed because if file's text line have substring like "text" and text have special chars or even worse, script code, then the script crashes or works not proper way (including script control capturing by programmer who specially composed the text).
If I can't delete " from the text stream(s), then I just want to identify, that the file (or it's first %N% lines, including empty lines) contains at least one " char.
Any thoughts are appreciated, including any file preprocessing. But main aim is script speed.
for /f "skip=2 delims=" %%a in ('find /v /n "" "file" 2^>nul') do set "v=%%a"&call :v&if not errorlevel 1 goto FURTHER1
goto FURTHER2
:v
for /f "delims=[]" %%a in ("%v%") do set "line%%a=%v:*]=%"&if %%a lss %N% (exit /b 1) else exit /b 0
#ECHO Off
SETLOCAL
SET "sourcedir=U:\sourcedir"
SET "filename1=%sourcedir%\q39558311.txt"
SET "tempfilename1=%sourcedir%\q39558311#.txt"
>"%tempfilename1%" ECHO("
SET /a linefound=0
FOR /f "tokens=1 delims=:" %%a IN ('findstr /n /g:"%tempfilename1%" "%filename1%"') DO (
IF %%a gtr 2 SET /a linefound=%%a&GOTO report
)
:report
ECHO quote found AT line %linefound%
DEL "%tempfilename1%"
GOTO :EOF
You would need to change the setting of sourcedir and filename1 to suit your circumstances.
tempfile1 can be any name - it's just a temporary file; I chose that particular name for convenience.
I used a file named q39558311.txt containing some dummy data for my testing.
Essentially, create a file containing a single quote on a single line *tempfile1) then use findstr with the /g:filename option to read in the target strings to find. When findstr finds the line, it numbers it and outputs line_number:line found. Using : as a delimiter, token 1 of this line is the line number.
I don't understand why you've used the skip=number in your code. Do you intend to skip testing the first 2 lines of the target file?
the IF %%a gtr 2 tests the line number found. If it is greater than 2, then the variable linefound is set and the for loop is terminated.
I chose to initialise linefound to zero. It will remain zero if no " is found in lines 2..end. Equally, you could clear it and then it will be defined (with a value of first-line-found-with-quote-greater than-2) and no defined on not found.
I can only identify ", but not delete. Waiting for your suggestions on it!
>nul 2>&1 findstr /m \" "file"
if not errorlevel 1 echo double quote found!

windows batch rename files with padded numeric file?

Back in DOS 5 (LOL) I thought I understood batch files, but I'm at a loss.
I have a series of files:
disc51.mp3
disc52.mp3
disc53.mp3
disc54.mp3
disc55.mp3
disc56.mp3
disc57.mp3
disc58.mp3
disc59.mp3
disc510.mp3
disc511.mp3
...etc
I need them to be renamed:
disc501.mp3
disc502.mp3
disc503.mp3
disc504.mp3
disc505.mp3
disc506.mp3
disc507.mp3
disc508.mp3
disc509.mp3
disc510.mp3
disc511.mp3
So I need to only rename the first 9 files in the sequence and do so by adding a '0' between char 5 and 6. How do I do this?
This is my first stab which assumes that each file will begin with 'disc5'. However, I'd like something more generic, ie. that would work properly regardless of the initial naming convention. The only thing I'd like to assume is that after that 'name' the numbers would be 1,2,3,4,5,6,7,8,9,10,11,12, etc.
echo off
cls
setlocal enabledelayedexpansion
FOR %%G IN (*.MP3) DO ( call :strlen %%G)
exit /b
)
:strlen
set myvar=%~n1
rem now compute the length of the string
set #=!myvar!
set length=0
:loop
if defined # (
rem shorten string by one character
set #=!#:~1!
rem increment the string count variable %length%
set /A length += 1
rem repeat until string is null
goto loop
)
rem assuming file name starts with disc. I'd like to make this a more general case
if %length%==6 ren %1 !myvar:~0,5!0!myvar:~5,1!.mp3
exit /b
#echo off
for /L %%i in (1,1,9) do ren "%1%%i.mp3" "%10%%i.mp3"
Previous Batch file requires the initial name in the first parameter, for example:
test.bat disc5
You may also use previous method directly in the command-line:
for /L %i in (1,1,9) do ren "disc5%i.mp3" "disc50%i.mp3"

issues with enabledelayedexpansion for file renaming batch script

i am writing a batch script monotonic file renamer. basically, it makes the titles of all the files 1 2 3 4 .... and so on. i have since expanded it to be able to handle files of different types (txt, doc, flv, etc) but not everything is working out.
my main concern is i have broken the delayed expansion calls i was making before. now using !var1! is never expanded, or never recognized as a variable.
here is a verbosely commented version of my script
::a monotonic file renamer
#echo off
SETLOCAL ENABLEDELAYEDEXPANSION
SET tempfile=temp.txt
SET exttemp=exttemp.txt
if [%1] == [] goto usage
::make sure your dont overwrite something useful
if EXIST %tempfile% (
ECHO Temp file already exists, are you sure you want to delete?
del /P %tempfile%
)
if EXIST %exttemp% (
ECHO EXT Temp file already exists, are you sure you want to delete?
del /P %exttemp%
)
::initialize
SET /a counter=0
SET type=
SET /a ender=%1
::write filenames to tempfile
DIR /B /ON > %tempfile%
::read lines one by one
for /f "usebackq delims=" %%a in (%tempfile%) do (
REM make sure we do not rename any of the working files
if NOT "%%a"=="renamer.bat" (
if NOT "%%a"=="temp.txt" (
if NOT "%%a"=="exttostr.bat" (
SET /a counter+=1
REM get file extension
exttostr %%a > %exttemp%
SET /P type= < %exttemp%
REM housekeeping
del /F %exttemp%
REM rename
ren %%a !counter!.!type!
ECHO Renamed "%%a" to "!counter!.!type!"
)))
REM exit when we have run enough
if "!counter!"=="!ender!" goto exit
)
goto exit
:usage
echo Usage: renamer NUMFILES
:exit
::final housekeeping
DEL temp.txt
the idea is i drop my two files, renamer.bat(this file) and exttostr.bat(helper to get the file extension) into the folder and run it, it will rename files sorted alphabetically from 1 to how ever many files i specify.
when i run the code, it never uses the variables marked for delayed expansion appropriately, always leaving them as "!varname!", so it renames the first file "!counter!.!type!" and throws errors for the rest because there is already a file in the directory with that name.
this brings me to a secondary issue. sorting the dir list alphabetically results in a poor handling of numbered files. for example the list:
"1 7 15 75 120"
is sorted:
"1 120 15 7 75"
i have not been able to find a way around this yet, only that it is indeed the intended result of the dir sort. the only workaround i have is padding numbers with enough zeroes in the front.
thanks in advance for any insight!
everything is sorted but the second problem. i think i have not spoken well. i have this issue when i take IN the directory file names, not when writing out. so they already need to be padded. i has hoping there was some other way to read the directory and have it be sorted appropriately.
the most promising thing i have found is here: http://www.dostips.com/DtCodeBatchFiles.php#Batch.SortTextWithNumbers
#ECHO OFF
if "%~1"=="/?" (
echo.Sorts text by handling first number in line as number not text
echo.
echo.%~n0 [n]
echo.
echo. n Specifies the character number, n, to
echo. begin each comparison. 3 indicates that
echo. each comparison should begin at the 3rd
echo. character in each line. Lines with fewer
echo. than n characters collate before other lines.
echo. By default comparisons start at the first
echo. character in each line.
echo.
echo.Description:
echo. 'abc10def3' is bigger than 'abc9def4' because
echo. first number in first string is 10
echo. first number in second string is 9
echo. whereas normal text compare returns
echo. 'abc10def3' smaller than 'abc9def4'
echo.
echo.Example:
echo. To sort a directory pipe the output of the dir
echo. command into %~n0 like this:
echo. dir /b^|%~n0
echo.
echo.Source: http://www.dostips.com
goto:EOF
)
if "%~1" NEQ "~" (
for /f "tokens=1,* delims=," %%a in ('"%~f0 ~ %*|sort"') do echo.%%b
goto:EOF
)
SETLOCAL ENABLEDELAYEDEXPANSION
set /a n=%~2+0
for /f "tokens=1,* delims=]" %%A in ('"find /n /v """') do (
set f=,%%B
(
set f0=!f:~0,%n%!
set f0=!f0:~1!
rem call call set f=,%%%%f:*%%f0%%=%%%%
set f=,!f:~%n%!
)
for /f "delims=1234567890" %%b in ("!f!") do (
set f1=%%b
set f1=!f1:~1!
call set f=0%%f:*%%b=%%
)
for /f "delims=abcdefghijklmnopqrstuwwxyzABCDEFGHIJKLMNOPQRSTUWWXYZ~`##$*_-+=:;',.?/\ " %%b in ("!f!") do (
set f2=00000000000000000000%%b
set f2=!f2:~-20!
call set f=%%f:*%%b=%%
)
echo.!f1!!f2!!f!,%%B
rem echo.-!f0!*!f1!*!f2!*!f!*%%a>&2
)
this code can sort the filenames with one number in them (i.e. video100.mov is fine, video100video10.mov would break it)
the issue i have is i think adding a call to this helper fn will break it again, so i will be trying to include this in my modified renamer.bat now. any help is appreciated.
Probably the batch for extracting the extension reset the local environment.
But, you don't need it. You may extract the extension with the ~x option. Something similar to this ....
:monotonicrename
set /a counter = 0
for %%a in (%1\*.*) do (
if exist %%~fa (
set /a counter += 1
echo ren %%~fa !counter!%%~xa
)
)
goto :eof
to include leading zeroes in the counter, so that the directory sorts correctly, replace the previous rename command with three lines
set zcounter=0000!counter!
set zcounter=!zcounter:~-4!
echo ren %%~fa !counter!%%~xa
So putting all pieces together, add the monotonicrename function you just created in the batch file that can be as simpler as...
#echo off
setlocal enabledelayedexpansion
call :monotonicrename %1
goto :eof
:monotonicrename
set /a counter = 0
for %%a in (%1\*.*) do (
if exist %%~fa (
set /a counter += 1
set zcounter=0000!counter!
set zcounter=!zcounter:~-4!
echo ren %%~fa !zcounter!%%~xa
)
)
goto :eof
I didn't experience any issues with delayed expansion, everything worked fine for me (except, of course, for the fact that I didn't have the exttostr.bat helper script.)
Anyway, there are several things that could be improved about your script:
You don't need to store the result of DIR into a file to read it afterwards. You can read the output directly in the FOR loop.
You don't need the helper batch script. The extension can be extracted from %%a by using the ~x modifier with the loop variable: %%~xa. You can read more about modifiers by issuing HELP FOR from the command prompt.
The renamer batch file's own name can be referenced in the script as %0. You can apply the ~n modifier where you only need to use the name without the extension. The combined modifier of ~nx will give you the name with the extension.
So, here's how your script might look like with the above issues addressed:
::a monotonic file renamer
#echo off
SETLOCAL ENABLEDELAYEDEXPANSION
IF [%1] == [] GOTO usage
::initialize
SET /A counter=0
SET type=
SET /A ender=%1
::read lines one by one
FOR /F "usebackq delims=" %%a IN (`DIR /B /ON`) DO (
REM make sure we do not rename any of the working files
IF NOT "%%~a"=="%~nx0" (
SET /A counter+=1
RENAME "%%~a" "!counter!%%~xa"
ECHO Renamed "%%~a" to "!counter!%%~xa"
)
REM exit when we have run enough
IF "!counter!"=="!ender!" GOTO :EOF
)
GOTO :EOF
:usage
ECHO Usage: %~n0 NUMFILES
As for your secondary issue, it can be easily resolved like this:
Use something like 100000 as counter's initial value. (Use however many 0s you like, but possibly no more than nine.) Add the same value to ender as well.
When renaming files, instead of !counter! use the expression that removes the first character (the 1): !counter:~1! (in fact, this is not about removal, but about extracting a substring starting from the offset of 1, learn more about it with the HELP SET command).
Here's the modified version of the above script:
::a monotonic file renamer
#echo off
SETLOCAL ENABLEDELAYEDEXPANSION
IF [%1] == [] GOTO usage
::initialize
SET /A counter=1000
SET type=
SET /A ender=%1
SET /A ender+=counter
::read lines one by one
FOR /F "usebackq delims=" %%a IN (`DIR /B /ON`) DO (
REM make sure we do not rename any of the working files
IF NOT "%%~a"=="%~nx0" (
SET /A counter+=1
RENAME "%%~a" "!counter:~1!%%~xa"
ECHO Renamed "%%~a" to "!counter:~1!%%~xa"
)
REM exit when we have run enough
IF "!counter!"=="!ender!" GOTO :EOF
)
GOTO :EOF
:usage
ECHO Usage: renamer NUMFILES
You can also see that I made some other enhancements, like making sure the file name is enclosed in double quotes, and using GOTO :EOF instead of GOTO exit (:EOF is a special pre-defined label that points at the end of the batch script so you don't need to define your own).

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