batch file - find string in files with substring of filename and replace it

Question

I would like to ask you, how can I do this: I have three files in folder, car.txt, bus.txt, plane.txt. File car.txt contains some text with string for example test="in_car" and I know, that I find word with prefix "in_" + word from filename "car" and if I find it, I want to replace it by word "hello". And for files bus.txt and plane.txt do same thing, find word in_bus and replace it by hello etc. And I know that prefix "in_" is only at this place. Please, can you help me?

I try something like this:

for /R "../myFolder" %%f in (*.txt) do ( 
    set FILENAME=%%~nf
    set PREFIX=in_
    set REPLACETEXT=hello
    SET string=%%A
    set modified=!string:%PREFIX%%FILENAME%=%REPLACETEXT%!
)

but it is not working and I don't know, how can I save it to current file (replace it in file)

I try something like this: for /R "../myFolder" %%f in (*.txt) do ( set FILENAME=%%~nf set PREFIX=in_ set REPLACETEXT=hello SET string=%%A set modified=!string:%PREFIX%%FILENAME%=%REPLACETEXT%! ) but it is not working and I don't know, how can I save it to current file (replace it in file) — user5458916
– user5458916, Commented Oct 18, 2015 at 10:47
Please don't post code snippets in comments; edit your question instead. I did it for occasion. — JosefZ
– JosefZ, Commented Oct 18, 2015 at 11:33
Why the heck does such a problem need to be solved with a batch ? Use a real programming language for this or at least Windows scripting host which is present on current versions of Windows. — Marged
– Marged, Commented Oct 18, 2015 at 11:39

Stephan · Accepted Answer · 2015-10-18 13:01:06Z

1

you forgot another for (to read the files) (although you obviously planned it, as you used %%A):

@echo off
setlocal enabledelayedexpansion
set PREFIX=in_
set REPLACETEXT=hello
for /R  "." %%f in (*.txt) do ( 
    set FILENAME=%%~nf
    (for /f "delims=" %%A in (%%f) do (
        SET string=%%A
        set modified=!string:%PREFIX%%%~nf=%REPLACETEXT%!
        echo !modified!
        REM echo !string:%PREFIX%%%~nf=%REPLACETEXT%!
    ))>%%~dpnf.new
)

answered Oct 18, 2015 at 13:01

Stephan

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1 Comment

aschipfl Over a year ago

1. this might fail if there are spaces in the file names, or also special characters like & and ^; 2. what's the REM line for?

user5458916 · Accepted Answer · 2015-10-18 19:38:25Z

0

so I have this function solution:

pushd "../myFolder"
Setlocal enabledelayedexpansion

set "FILENAME=%%~nf"
set "OUTPUT=%%~nxf"
set "PREFIX=in_" 
set "REPLACETEXT=hello"   
set "TEMP=tmp"

for /R %%f in (*.txt) do (
    for /f "delims=" %%A in (%%f) do (
        SET "string=%%A"
        SET modified=!string:%PREFIX%%FILENAME%=%REPLACETEXT%! 
        echo !modified! >> %TEMP%
    )   
    del %OUTPUT%
    rename %TEMP% %OUTPUT%  
)
popd

but there is still one problem, I have not character ! in summary of output file, one line contains < !-- (without space,but I can't write it right here) but in output I have only this <--

answered Oct 18, 2015 at 19:38

user5458916

1

1 Comment

user5458916 Over a year ago

I have it! I set "setLocal" to disable and if for cycle I enable it :) thank you all so much :)

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