PcapNG: Rewrite hexpat for bugfixing #462
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I was debugging a piece of code that writes PcapNG files to disk. I noticed that the hexpat in ImHex was not correctly parsing custom blocks due to padding and size issues.
I started working on fixing this and realized the file was a bit too repetitive and was doing padding calculations in many places and coud be simplified. I got carried out and rewrote the file to use std::mem::AlignTo whenever needed and to recycle fields instead of replicating them in many places.
After some testing with my files I can confirm that my parsing issues were solved but I have not deeply tested Options parsing (my files do not have that section) although it should be ok.
I hope this is of your liking.
Thanks