I'm not that proficient at the command line, but it looks like a shell script that just picks every value, assigns it to some variable based on position and the preceding text, and then writes it accordingly in the output file, shouldn't be too hard.

If no one who's actually good at this stuff writes it soon, I'll be happy to try, but I suspect the task is more efficiently fulfilled by someone who can actually write that kind of shell script intuitively and without having to look up every other command that needs to be written.