Pre-processor? (not a feature request - yet)

[NLS]

I post this to get some feedback first and possibly make it a feature request.

Most of my emulation stuff (ROMs) are zipped. I think for most people too.

Irrelevant if the emulator supports zipped content or not (for example AFAIK WinUAE doesn't and SCUVMM doesn't).

Some of my stuff is also DOUBLE zipped, because that is how it was distributed (TOSEC content for example, where zipped games are then rezipped per folder, for example "Commodore/C128/Games/[D64]/Commodore C128 - Games - [D64] (TOSEC-v2016-01-10_CM).zip", where "Commodore C128 - Games - [D64] (TOSEC-v2016-01-10_CM).zip" contains individually zipped D64).

Now... I don't want to use any "middle-man" (like RocketLauncher) and I believe LaunchBox can nicely handle these things itself (or should).

So... is it possible (and what do you think) to implement a "pre-processor" to handle ROMs before calling the actual emulator?

This pre-processor would handle zipped (and even double zipped) content both when scrubbing a collection (where the system will detect if a file needs to be extracted) and before calling the actual emulator? Using some temporary location for the extracted content of course and making sure to clean it up later (either directly after using it, or better, after a certain disk usage threshold is reached, so that some elementary caching takes place). 

(actually for double zipped content even RocketLauncher cannot help currently)

Would LOVE that.

 

[Zombeaver]

LB already has an "extract rom archives" option you can enable for your emulator entries. It's not going to double-unzip stuff though. I'm not sure if anything could/would do that. I would suggest just extracting the first layer permanently.