batch file: if %variable% (commands) - if-statement

i want to use my %variable% to manage the conditional clauses in a IF.. THEN.. ELSE in a batch file.
Something like the following:
set variable=%%homedrive%% EQU C:
if %variable% (
echo test ok
) else (
echo test fail
)
if i write on a cmd console:
set test=1 equ 1
if %test% echo OK
it works!
i'll use it in a for /f cicle:
this is my pseudo codethis is my pseudo code to correct
(
rem echo "%systemdrive%;;"
echo "%%COMPUTERNAME%% EQU [x];[some parameters1]"
echo "%%USERNAME%% NEQ [y];[some parameters2]"
echo "%%LOGONSERVER%% EQU [z];[some parameters3]"
[..]
) > "%temp%\CSG_fs.tmp"
[..]
for /f "usebackq tokens=1-2* delims=;" %%a in ("%temp%\CSG_fs.tmp") do (
set cond=%%a& set cond=!cond:~1!
set parm=%%b& set parm=!parm:~0,-1!
echo - cicle: "!cond!" --^> "!parm!"
call if !cond! call:CSG_sub_fs !parm!
echo - done
)
goto:eof
:CSG_sub_fs
[..]
goto:eof
--edit--
how can i use the variable !cond! to decide if execute the call to CSG_sub_fs?
call if !cond! call:CSG_sub_fs !parm!
does not work because it returns: "Can not find the batch label specified - IF"
and if i use
if !cond! call:CSG_sub_fs !parm!
it will say: "call:CSG_sub_fs not expected"

Well - there doesn't seem to be a question, so it's not that easy to answer.
You have a problem with
echo "^%COMPUTERNAME^% EQU [x];[some parameters1]"
because ^ does not escape % - % escapes % - use %%COMPUTERNAME%%...
(you should have been able to check this just by TYPEing "%temp%\CSG_fs.tmp"
Next problem is that
for /f "tokens=1-2* delims=; usebackq" %%a in (%temp%\CSG_fs.tmp) do (
may process the file %temp%\CSG_fs.tmp provided %temp%\CSG_fs.tmp contains no spaces, semicolons or commas. If it contains any of these deafult separators, or certain other characters with a special meaning, then you must enclose the filename in double-quotes "%temp%\CSG_fs.tmp"and use the usebackq option.
You've attempted to use usebackq but DELIMS must be the LAST option if it is used. Your code would set ";","","u","s","e","b","a","c","k" and "q" as delimiters.
Beyond that, perhaps if you explain what you intend to achieve, we'd be able to devise the appropriate code.
Try this:
#ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
CLS
REM I'm setting these variables for testing.
REM That isn't ususally a good idea but the SETLOCAL
REM will ensure they are restored on exit
SET computername=[x]
SET logonserver=[z]
(
rem echo "%systemdrive%;;"
echo "%%COMPUTERNAME%% EQU [x];[some parameters1]"
echo "%%USERNAME%% NEQ [y];[some parameters2]"
echo "%%LOGONSERVER%% EQU [z];[some parameters3]"
) > "%temp%\CSG_fs.tmp"
for /f "usebackqtokens=1-2* delims=;" %%a in ("%temp%\CSG_fs.tmp") do (
set cond=%%a& set "cond=IF !cond:~1! CALL :csg_sub_fs "
set parm=%%b& set parm=!parm:~0,-1!
CALL :varcmd "!cond!" "!parm!"
)
GOTO :eof
:varcmd
%~1 %~2
GOTO :eof
:csg_sub_fs
ECHO parameters supplied to csg_sub_fs were: %*
GOTO :eof
I've forced the variablenames to match the conditions you've used in order to trigger the subroutine calls. Change as you need to prove your concept.
And dont worry about imperfect English. I'm sure I wouldn't do as well in your language!

Related

How to subtract string and non-null value entries from txt file?

I have a script that extracts lines such as :
THIS_IS_A_LINE:=
THIS_IS_A_LINE2:=
and outputs all of the same kind into another .txt file as:
THIS_IS_A_LINE
THIS_IS_A_LINE2
The script is the following:
set "file=%cd%/Config.mak"
set /a i=0
set "regexp=.*:=$"
setlocal enableDelayedExpansion
IF EXIST Source_List.txt del /F Source_List.txt
for /f "usebackq delims=" %%a in ("%file%") do (
set /a i+=1
call set Feature[!i!]=%%a
)
cd .. && cd ..
rem call echo.!Feature[%i%]!
for /L %%N in (1,1,%i%) do (
echo(!Feature[%%N]!|findstr /R /C:"%regexp%" >nul && (
call echo FOUND
call set /a j+=1
call set Feature_Disabled[%j%]=!Feature[%%N]:~0,-2!
call echo.!Feature_Disabled[%j%]!>>Source_List.txt
) || (
call echo NOT FOUND
)
)
endlocal
I also have another script that extracts lines such as:
THIS_IS_ANOTHER_LINE:=true
THIS_IS_ANOTHER_LINE2:=true
...
and outputs all of the same kind into another .txt file as:
THIS_IS_ANOTHER_LINE
THIS_IS_ANOTHER_LINE2
...
The script is the following:
set "file=%cd%/Config.mak"
set /a i=0
set "regexp=.*:=true$"
setlocal enableDelayedExpansion
IF EXIST Source_List2.txt del /F Source_List2.txt
for /f "usebackq delims=" %%a in ("%file%") do (
set /a i+=1
call set Feature[!i!]=%%a
)
cd .. && cd ..
rem call echo.!Feature[%i%]!
for /L %%N in (1,1,%i%) do (
echo(!Feature[%%N]!|findstr /R /C:"%regexp%" >nul && (
call echo FOUND
call set /a j+=1
call set Feature_Disabled[%j%]=!Feature[%%N]:~0,-6!
call echo.!Feature_Disabled[%j%]!>>Source_List2.txt
) || (
call echo NOT FOUND
)
)
endlocal
Nevertheless, there is a third kind of lines which contain numerical numbers (also some hexadecimal values), such as:
THIS_IS_AN_UNPROCESSED_LINE:=0xA303
THIS_IS_AN_UNPROCESSED_LINE2:=1943
THIS_IS_AN_UNPROCESSED_LINE3:=HELLO_DOOD_CAN_YOU_PARSE_ME?
So I need the way to extract as well those kind of lines into another .txt file such as:
THIS_IS_AN_UNPROCESSED_LINE:=0xA303
THIS_IS_AN_UNPROCESSED_LINE2:=1943
THIS_IS_AN_UNPROCESSED_LINE3:=HELLO_DOOD_CAN_YOU_PARSE_ME?
So basically extract lines which are not of the kind:
THIS_IS_AN_UNPROCESSED_LINE:=
or
THIS_IS_AN_UNPROCESSED_LINE:=true
but keeping both the sides of the line entry.
I know there must be some trick with the regular expression but I just can't find it out.
You have made your code much more complicated than it needs to be. There is no need to create an array of every line in the file.
If there are no other : or = before the first :=, then you can use FINDSTR to print out all lines that contain a string, followed by :=. FOR /F can capture and parse each matching line into the parts before and after :=, and then IF statements can classify the three different types of lines.
I use n> to open all three output files outside the main code block for improved performance, and then I use the &n> syntax to direct each output to the appropriate, already opened file. I use high numbered file handles to avoid problems described at Why doesn't my stderr redirection end after command finishes? And how do I fix it?.
#echo off
setlocal
set "file=Config.mak"
set /a "empty=7, true=8, unprocessed=9"
%empty%>empty.txt %true%>true.txt %unprocessed%>unprocessed.txt (
for /f "delims=:= tokens=1*" %%A in ('findstr /r "^[^:=][^:=]*:=" "%file%"') do (
if "%%B" equ "" (
>&%empty% (echo %%A)
) else if "%%B" equ "true" (
>&%true% (echo %%A)
) else (
>&%unprocessed% (echo %%A:=%%B)
)
)
)
The above will ignore lines that contain : or = before :=, and it will not work properly if the first character after := is : or =. I'm assuming that should not be a problem.
It should be relatively easy to write a very efficient solution using PowerShell, VBScript, or JScript that eliminates the limitations.
You could also use JREPL.BAT - a powerful and efficient regular expression text processing command line utility. JREPL.BAT is pure script (hybrid batch/JScrpt) that runs natively on any Windows machine from XP onward, no 3rd party exe required. And JREPL is much faster than any pure batch solution, especially if the files are large.
Here is one JREPL solution
#echo off
setlocal
set repl=^
$txt=false;^
if ($2=='') stdout.WriteLine($1);^
else if ($2=='true') stderr.WriteLine($1);^
else $txt=$0;
call jrepl "^(.+):=(.*)$" "%repl%" /jmatchq^
/f Config.mak /o unprocessed.txt >empty.txt 2>true.txt
If all you have to do is classify the lines into three different files, without worrying about stripping off the :=true and := parts for the empty and true lines, then there is a very simple pure batch solution using nothing but FINDSTR.
#echo off
set "file=Config.mak"
findstr /r ".:=$" "%file%" >empty.txt
findstr /r ".:=true$" "%file%" >true.txt
findstr /r ".:=" "%file%" | findstr /r /v ":=$ :=true$" >unprocessed.txt

Split a file name at last occurrence 'by'

I am working on a batch script to move files from one master directory which has 1000+ files to sub folders, according to the file name, sub folders have to be created and moved accordingly. Below is the scenario/ file name format.
title_or_work_done_by_user_name.xls
From this file name pattern, I have to pick "user_name" and create a folder for that user_name. I found similar code, but not able to break it exactly at the last 'by'.
#ECHO OFF
SETLOCAL
SET "sourcedir=E:\Source"
SET "destdir=E:\Destination"
FOR /f "tokens=2*delims='by_'" %%a IN ('dir /b /a-d "%sourcedir%\*by_*.xls" ') DO (
ECHO %%a
ECHO(MD "%destdir%\%%a" 2>nul
ECHO(MOVE "%sourcedir%\*by_%%a.xls" "%destdir%\%%a\")
pause
GOTO :EOF
Can some one please help me out in extracting 'user_name' by splitting it at the last occurrence of 'by_'.
Thanks in advance :)
The DELIMS option specifies a list of characters, not a string. So your FOR loop will split tokens at ' or _ or b or y. Also, you have no way of knowing what is the number for the last token. Your design is a dead end.
Option 1
Here is a pure batch solution that will do what you want. I use substitution to convert the file name into a pseudo path. It is then easy to pick off the desired name. Delayed expansion is used in order to access the value of a variable within the same loop (code block) that sets it. The only tricky part is toggling delayed expansion on and off as needed so as to preserve any !. A FOR variable containing the ! character will be corrupted if it is expanded while delayed expansion is enabled.
#echo off
setlocal disableDelayedExpansion
for %%F in (*_by_*.jpg) do (
%= Initialize name without extension =%
set "name=%%~nF"
%= Convert "Part1_by_Part2_by_Name" into "Part1\Part2\Name" =%
setlocal enableDelayedExpansion
for %%f in ("!name: - =\!") do (
%= Only execute endlocal on the first iteration =%
if "!!" equ "" endlocal
%= The name might contain a dot, so need name and extension =%
set "name=%%~nxf"
)
set "file=%%F"
setlocal enableDelayedExpansion
%= Hide error message if folder already exists =%
md "!name!" 2>nul
move "!file!" "!name!"
endlocal
)
Option 2
The logic is simpler if a subroutine is used, as it avoids delayed expansion issues. The CALL makes the code less efficient (slower), but that shouldn't be an issue for a task like this.
#echo off
setlocal disableDelayedExpansion
for %%F in (*_by_*.jpg) do call :moveFile "%%F"
exit /b
:moveFile
set "name=%~n1"
for %%F in ("%name:_by_=\%") do set "name=%%~nxF"
md "%name%" 2>nul
move %1 "%name%"
exit /b
Option 3
The simplest solution is to use my JREPL.BAT utility - a hybrid JScript/batch script that performs regex replacement. JREPL is pure script that runs natively on any Windows machine from XP onward.
#echo off
for /f "tokens=1,2 delims=: eol=:" %%A in (
'dir /b /a-d *_by_*.jpg ^| jrepl "^.*_by_(.*)\.jpg" "$&:$1" /i'
) do (
md "%%B" 2>nul
move "%%A" "%%B"
)
#ECHO OFF
SETLOCAL
FOR %%a IN (
title_or_work_done_by_user_name.xls
title_or_work_done_by_digby_hill.xls
title_or_work_done_by_hook_or_by_crook.xls
) DO CALL :process %%a
GOTO :eof
:process
SET "name=%~1"
:: This is the actual processing
ECHO processing "%name%"
SET "name=%name:_by_=.%"
:loop
FOR /f "tokens=1,2,3*delims=." %%p IN ("%name%") DO IF "%%s"=="" (SET "user_name=%%q") ELSE (
SET "name=%%q.%%r.%%s"&GOTO loop
)
ECHO extracted name is "%user_name%"
GOTO :EOF
I've chosen to use the string _by_ as the separator, since there are names that end "by".
Simply replace the string _by_ with a string that won't occur (or has a restricted use) in the filename. I chose . byt perhaps with sme modifications (like removing the extension from the name using %~n : could be used.
The reult is [string.]*required_name.xls
By repeatedly removing the first token using . as a separator, when there is no 4th+token, then the second token would be the required string.

Dynamic for set in batches

I want 2 types of lists
The first list with types for example daily and release and the second type with paths for the first list.
After that I want dynamicly go through the second type lists based on the first type list.
Something like that:
#ECHO OFF
REM ##########
REM ## Test ##
REM ##########
SETLOCAL EnableDelayedExpansion
SET VersionType=(Daily Release)
SET TagetsDaily=(path1 path2)
SET TagetsRelease=(path23 path24)
FOR %%n IN %VersionType% DO (
ECHO !Tagets%%n!
SET test_temp=!Tagets%%n!
ECHO %test_temp%
FOR %%i !Tagets%%n! DO (
ECHO %%i
)
)
PAUSE
EXIT
The problem of this code is that it doesn't worked.
OUTPUT:
"!Tagets%n!" can be syntactically processed at this point.
And with out the secound for its:
(path1 path2)
ECHO is off (OFF).
(path23 path24)
ECHO is off (OFF).
Can me anyone explain me why thats is a syntactic error and why I can copy the content from !Tagets%%n! into an other variable??
try this:
#ECHO OFF &SETLOCAL ENABLEDELAYEDEXPANSION
SET "VersionType=Daily Release"
SET "TagetsDaily=path1 path2"
SET "TagetsRelease=path23 path24"
FOR %%n IN (%VersionType%) DO (
ECHO !Tagets%%n!
SET test_temp=!Tagets%%n!
ECHO !test_temp!
FOR %%i IN (!Tagets%%n!) DO (
ECHO %%i
)
)
Please look at for /? and delayed expansion.

bat: Listing empty directories, if/else statements within for statements?

I'm trying to write a script that lists every file name in a specified folder, and notifies the user if that folder is empty. So far I've got:
for /r "O:\Mail\5-Friday" %%d in (*.pdf) do (
dir /a /b "%%~fd" 2>nul | findstr "^" >nul && echo %%~nd || echo Empty: Friday
)
but I've no idea where to put the if, else operators.
And is there a way to specify a folder based on user input without rewriting every function for each folder? So instead of:
if /i {%ANS%}=={thursday} (goto :thursday)
if /i {%ANS%}=={friday} (goto :friday)
:thursday
<do stuff>
:friday
<do the same stuff as thursday, but a different directory>
etc, I could write one function with variables in place of paths, assign the directory to a variable, and easily add/remove folders in the code as necessary?
To address the first part of your question, "where to put the if, else operators"... The notation of
command | findstr >nul && echo success || echo fail
... is shorthand for
command | findstr >nul
if ERRORLEVEL 1 (
echo fail
) else (
echo success
)
The magic that happens is in the conditional execution operators, the && and ||. If findstr exits with status zero, then a match was found. Therefore, execute the stuff after &&. Otherwise, status is non-zero, no match was found, so execute the stuff after ||. See how that works?
For the second part, here's a typical way to prompt the user to provide entry based on a finite number of choices.
#echo off
setlocal
:begin
set /p "day=What day? "
for %%I in (monday tuesday wednesday thursday friday) do (
if /i "%day%" equ "%%I" goto %%I
)
goto begin
:monday
call :getdirs "O:\Mail\1-Monday"
goto :EOF
:tuesday
call :getdirs "O:\Mail\2-Tuesday"
goto :EOF
:wednesday
call :getdirs "O:\Mail\3-Wednesday"
goto :EOF
:thursday
call :getdirs "O:\Mail\4-Thursday"
goto :EOF
:friday
call :getdirs "O:\Mail\5-Friday"
goto :EOF
:getdirs <path>
setlocal enabledelayedexpansion
for /f "delims=" %%I in ('dir /b /s /ad "%~1"') do (
dir /b "%%I" 2>NUL | findstr "^" >NUL || echo %%I has no files
)
goto :EOF
Or, even hacksier, I'll do something you probably weren't expecting was possible. I'll have the script open a folder selection dialog to allow the user to select the directory to scan. It's a batch / JScript hybrid script.
If you wish, you can set the root of the folder browser to a ShellSpecialConstants folder by changing the last argument in the next-to-the-last line. Using a value of 0x11 makes the root your system's drives. No value or a value of 0x00 makes the root "Desktop". Or leave the script as-is to set the root as "O:\Mail".
#if (#a==#b) #end /*
:: fchooser2.bat
:: batch portion
#echo off
setlocal
set initialDir="O:\Mail"
for /f "delims=" %%I in ('cscript /nologo /e:jscript "%~f0" "%initialDir%"') do (
call :getdirs "%%I"
)
exit /b
:getdirs <path>
setlocal enabledelayedexpansion
for /f "delims=" %%I in ('dir /b /s /ad "%~1"') do (
dir /b "%%I" 2>NUL | findstr "^" >NUL || (
rem This is where you put code to handle empty directories.
echo %%I has no files
)
)
goto :EOF
:: JScript portion */
var shl = new ActiveXObject("Shell.Application");
var hint = 'Double-click a folder to expand, and\nchoose a folder to scan for empty directories';
var folder = shl.BrowseForFolder(0, hint, 0, WSH.Arguments(0));
WSH.Echo(folder ? folder.self.path : '');
Edit Since apparently BrowseForFolder accepts an absolute directory, there's really no benefit to using PowerShell / C#. The hybrid batch / PowerShell / C# script shall henceforth be retired to the revision history.
This is fun!

Regex to identify DOS environment variables within braces

The following DOS script snippet has a bug:
if not exist %MyFolder% (
mkdir %MyFolder%
if %errorlevel% GEQ 1 (
rem WARNING: the line above has a bug!
rem %errorlevel% will be the errorlevel
rem of the if statement because of the (parentheses)
echo Error: Could not create folder %MyFolder%
goto AnErrorOccurred
)
)
The fix is to use setlocal enabledelayedexpansion as follows:
setlocal enabledelayedexpansion
if not exist %MyFolder% (
mkdir %MyFolder%
if !errorlevel! GEQ 1 (
rem WARNING: the line above has a bug!
rem !errorlevel! will be the errorlevel
rem of the if statement because of the (parentheses)
echo Error: Could not create folder %MyFolder%
endlocal & goto AnErrorOccurred
)
)
endlocal
A full explanation of why is available here: Batch file fails to set environment variable within conditional statement
I want to audit my code to find instances of this bug, I figure a Regex would be an appropriate match, but haven't managed to get one working...
I think the ingredients should be:
Match an environment variable surrounded with %percentsigns%
That is inside (parentheses)
Any suggestions?
grepWin
I would use grepWin. Depending on the number of instances you have to find, you could write a regex that will give you all of them, plus some false positives.
Example: bug.bat
if not exist %MyVar% echo Hi!
if not exist %MyFolder% (
mkdir %MyFolder%
if %errorlevel% GEQ 1 (
rem WARNING: the line above has a bug!
rem %errorlevel% will be the errorlevel
rem of the if statement because of the brackets
echo Error: Could not create folder %MyFolder%
goto AnErrorOccurred
)
)
Then use a regular expression to match all lines that start with if and have an open parenthesis:
$ grep "^[ \t]*if.*(" bug.bat
if not exist %MyFolder% (
if %errorlevel% GEQ 1 (
grepWin will show you all the files that match.
Percent Symbols
By request:
grep "^[ \t]*if.*%.*%.*(" bug.bat
You can't solve it with Regex, because you can't count the parenthesis with a regular language. For example:
Stuff (
More Stuff (
Less Stuff )
A %var%
Less Stuff )
There is no ( between the last ) and the variable. Since I can't count how many `( appear before to know if there's one open, I can't do this with regular expressions.
As you can see, he is using ! rather than % even in the rootlevel of the batch.
So basically you should be able to alternate every % to an ! for your environmental variables.
One other way is to use the AND (&&) and OR (||) tests for success (errorlevel 0) or error (errorlevel > 0), as in:
if not exist %MyFolder% mkdir %MyFolder%|| (
echo Error: Could not create folder %MyFolder%
goto AnErrorOccurred
)
I hope this can help.
And by the way, you do not fail to set the variable, you fail to read it back.
What happen is, within parenthesis, using %%'s give you the states which was before you entered the said parenthesis. The only thing I knows work well is the math "set /a toto+=1" which will correctly increment the variable. Otherwise you have two options:
Either use a called function to set the variable or use the setlocal ENABLEDELAYEDEXPANSION statement, as previously stated, and use !!'s within the parenthesis.