The past 2 weeks I've been working on a program to convert #GrandPrix2 car models to OBJ. https://github.com/Dahie/gpx2obj-ruby I had to learn reading binary files, #kaitai, had to learn a lot about SVG. Still somethings to do, but generally quite happy now. Ideally I'd love to put some of this into the GP2careditor, but my C++ is not good enough. #simracing #x86GP2 #gp2
First spec meeting of the year successful. Many more to come on the road to 1.0, but we've actually started defining a ground truth using #kaitai.
First milestone will be implementing the version handshake routine: https://github.com/rabbitControl/RCP/blob/1.0/Flow.md
I had always wanted to try Kaitai Struct. This workshop of Eloise Brocas at @hack_lu
on exploring firmware just gave me the opportunity to do that on a custom firmware format.
For a #Kaitai example, I did a partial KSY YAML file to describe and parse DPX files (image format used in the cinema industry): https://github.com/robin-francois/dpx-kaitai-struct
Using this YAML file, I generated a parser and discovered that a lot of DPX were not exactly following the specs, and that I was actually getting more metadata than existing metadata extraction tools.
Another tool that I am trying to use more: #Kaitai Struct.
This is a tool to generate parsers for binaries/files. You describe the structure of the file format in YAML, and then you can generate parsing libraries for a variety of programming languages.
For me, this is most probably a good tool to document a file format or a filesystem.
There is also a web IDE to help you write your YAML Kaitai description: https://ide.kaitai.io/
Link to the project website: https://kaitai.io/
I used Kaitai Struct to help in my development of python-pickle.rb, a full Ruby implementation of the Python Pickle serialization format (versions 0-5). Although, Kaitai's documentation and example code only explains the structure of the file format, I still had to read the messy Python source code for pickle.py in order to understand how to process certain opcodes. It's still worth checking out if you're writing a file format parser/writer or serializer/deserializer library.
#kaitai #kaitaistruct #fileformats #ruby #pickle
Shattering the eyeglass: Using Kaitai Structs to dissect the eyeglass’ contents
https://exponentialdecay.co.uk/blog/shattering-the-eyeglass/
A decade later I revisit the Eyeglass training format to dissect its contents. I though about a couple of approaches to doing this and landed on looking at part of it manually a la #digipres research and then using #kaitai to illustrate the principles further. Hopefully it is of interest to some! #FileFormats
Publishing again some "unfinished" work.
I'm a big fan of Kaitai and I have made a KSY file that allows to parse #DPX files with #Kaitai.
Can be used with their Web IDE or to generate parsers in various languages.
This is unfinished but already quite advanced: https://github.com/robin-francois/dpx-kaitai-struct
I will try to document a bit more the repo but no promises.
@SuperDicq holy shit lol. But I recently learned about #kaitai, which seems to be a pretty good tool for this kind of stuff.
Comes with a web IDE, hex editor and some more tools. https://kaitai.io
️ #Vagabond 
