[wpkg-users] Double quoting and Python

[Rainer Meier]

Hi Brian,

Brian Reese wrote:
> I have some questions about double quoting and python in WPKG:
> 
> 1. How does WPKG handle double quoting. Are there any priorities between ' and " ?
> 2. Are there any escape characters? Like a /" or // to get the real character?
> 3. Does WPKG handle .py scripts? I assume it does.
> 
> My problem stems from trying to pass variables into my python script after I call the script. for instance 'python.exe scriptname.py "variable 1" "variable 2" "variable 3"'  That is how I would like my WPKG install commmand to look, it works in cmd.exe. I get an exit code 1 saying the install command failed.
> 
> Any thoughts or ideas? Thanks,

OK. You can run python.exe from wpkg.js via package definition. However
this depends on some pre-conditions (python.exe within the path...) and
it's hard to debug if something goes wrong. In such cases I strongly
recommend to go for an "unattended-install-script" method.

Place a simple CMD script within the installation folder and tell WPKG
to run it. The script can be very simple...

unattended.cmd:

@echo off

set VARIABLE1=variable 1
set VARIABLE2=variable 2
set VARIABLE3=variable 3
set SCRIPT_PATH=%~dp0
set SCRIPT_NAME=scriptname.py

echo Installing
start /wait "app-install" %SCRIPT_PATH%%SCRIPT_NAME% "%VARIABLE1%"
"%VARIABLE1%" "%VARIABLE1%"
set EXIT_CODE=%ERRORLEVEL%

exit /B %EXIT_CODE%


Ths allows you to insert any kind of processing (pre-checks,
post-checks...) and return an exit code as desired.


br,
Rainer