How to search and replace strings that contain "=" characters in text file with Windows CMD (not powershell) - batch-file

Question

I wrote this code based on some other examples but just can't get it to work? (it's a .bat file)? The code writes the new file with all the old lines just won't edit the three lines right with the "=" character. Can someone point me in the right direction please.
This is what the INTOUCH.INI file looks like to start:
[InTouch]
AppMode=2
AppName0=test
AppName1=
AppName2=
AppName3=
AppDesc0=New InTouch application
AppDesc1=
AppDesc2=
AppDesc3=
SAOConverted=1
WinFullScreen=1
WinLeft=-4
WinTop=-4
WinWidth=1032
WinHeight=748
UseNewSendKeys=1
DebugScripts=0
UseBigBitmap=1
WindowViewerStartupIconic=0
CloseOnTransfer=0
And this is what is written:
[InTouch]
AppMode=2
AppName0=test
AppName1=
AppName2=
AppName3=
AppDesc0=New InTouch application
AppDesc1=
AppDesc2=
AppDesc3=
SAOConverted=1
1=WinFullScreen=0=1
WinLeft=-4
WinTop=-4
1032=WinWidth=1000=1032
748=WinHeight=700=748
UseNewSendKeys=1
DebugScripts=0
UseBigBitmap=1
WindowViewerStartupIconic=0
CloseOnTransfer=0
This is my .bat file code:
Set "OldString1=WinFullScreen=1"
Set "NewString1=WinFullScreen=0"
Set "OldString2=WinWidth=1032"
Set "NewString2=WinWidth=1000"
Set "OldString3=WinHeight=748"
Set "NewString3=WinHeight=700"
#ECHO OFF &SETLOCAL
cd /d F:\
for %%x in (INTOUCH.INI) do call:process "%%~x"
goto:eof
:process
set "outFile=%~n1_edited%~x1"
(for /f "skip=2 delims=:" %%a in ('find /n /v "" "INTOUCH.INI"') do (
set "ln=%%a"
Setlocal enableDelayedExpansion
set "ln=!ln:*]=!"
if defined ln (
set "ln=!ln:%OldString1%=%NewString1%!"
set "ln=!ln:%OldString2%=%NewString2%!"
set "ln=!ln:%OldString3%=%NewString3%!"
)
echo(!ln!
endlocal
))>"%outFile%"
Exit /b

Answer 1

If you use the file's format to your advantage you can set the values of the new variables at the top of the script and then as you are reading the variable names from the settings file you can see if those variables are defined. If they are defined then output the new value, otherwise output the original value.
The trick to this is the double variable expansion you get when you use the CALL and ECHO commands together. First the for variable is expanded the name of the variable and then in the second phase of expansion the value of the variable is then expanded. That is the reason for the extra sets of percent symbols.
#echo off
Set "WinFullScreen=0"
Set "WinWidth=1000"
Set "WinHeight=700"
REM cd /d F:\
for %%F in (INTOUCH.INI) do set "outFile=%%~nF_edited%%~xF"
REM Read first line of file
set /p line1=<INTOUCH.INI
(echo %line1%
for /f "usebackq skip=1 tokens=1,2 delims==" %%G in ("INTOUCH.INI") do (
if defined %%G (
CALL echo %%G=%%%%G%%
) else (
echo %%G=%%H
)
))>"%outFile%"
Exit /b

Answer 2

#echo off
Set "AppMode=x"
Set "WinFullScreen=0"
Set "WinWidth=1000"
Set "WinHeight=700"
for /f "skip=1 usebackq tokens=1,2 delims==" %%G in ("a.INI") do call :proc "%%G" %%H
exit /b
:proc
set val=%2
for /F "tokens=* eol= " %%S in ("%~1") do set trimmed=%%S
call :getoverrideval %trimmed%
if "%override%" == "" (
echo %~1=%2%
) else (
echo %~1=%override%
)
goto :EOF
:getoverrideval
call set override=%%%1%%
Output:
C:\Users\w16coreeval>cmd /c a.bat
AppMode=x
AppName0=test
AppName1=
AppName2=
AppName3=
AppDesc0=New
AppDesc1=
AppDesc2=
AppDesc3=
SAOConverted=1
WinFullScreen=0
WinLeft=-4
WinTop=-4
WinWidth=1000
WinHeight=700
UseNewSendKeys=1
DebugScripts=0
UseBigBitmap=1
WindowViewerStartupIconic=0
CloseOnTransfer=0