klange

Making a PDF + Bootable ISO Hybrid Polyglot

If you've not seen my résumé, that is what this post is about, and you should probably look at it first to get an idea of what's happening.

A Tale of Two Files

PDF and ISO9660 are two very different file formats. PDF is actually a surprisingly human-readable (but, sadly, not very human-writable) plain-text format, technically descended from PostScript. PDF is not very forgiving on changes, as it stores tables of offsets to various elements, so it is very difficult to insert or remove content manually without going through a robust PDF manipulation library.

ISO9660 is a disk filesystem, meant to be written once and read many times on many different kinds of hardware. As it is sector-based, it expects data structures to be at particular absolute offsets.

eevee

import os.path
import re
import sys


# LZ-ish decompression scheme borrowed from picolove:
# https://github.com/gamax92/picolove/blob/master/cart.lua
compression_map = b"\n 0123456789abcdefghijklmnopqrstuvwxyz!#%(){}[]<>+=/*:;.,~_"
def decompress(code):
    lua = bytearray()

hediet

type StringBool = "true"|"false";


interface AnyNumber { prev?: any, isZero: StringBool };
interface PositiveNumber { prev: any, isZero: "false" };

type IsZero<TNumber extends AnyNumber> = TNumber["isZero"];
type Next<TNumber extends AnyNumber> = { prev: TNumber, isZero: "false" };
type Prev<TNumber extends PositiveNumber> = TNumber["prev"];

LeoAdamek

#pragma endian big

enum ChunkType : u32 {
        // Critical Chunks (uppercase first char)
        ImageHeader = 0x49484452, //"IHDR",
        Palette         = 0x504c5445, //"PLTE",
        ImageData       = 0x49444154, //"IDAT",
        ImageEnd        = 0x49454E44, //"IEND",

        // Ancillery chunks (lowercase first char)

klange

12 Years of ToaruOS

This is a repost and update to an imgur album with screenshots of ToaruOS throughout its development, as imgur is no longer a viable platform for maintaining this collection.

Early Development

My first commit in the ToaruOS repository, ecd4fe2bc170b01ad700ff76c16da96993805355, was made on January 15th, 2011. This date has become ToaruOS's "birthday". It would be another six years and two weeks before ToaruOS's first real release, 1.0.

Spottedleaf

In 1.21?

Moonrise contains Starlight as well as a lot of server-side optimisations.

Final change of plans (March 8, 2024)

I don't see that many people are using Starlight on modern versions anymore. As such, I don't see any reason to continue to maintain the mod versions, given that they do have real mod conflict issues with other mods. Starlight is also not neccessary to use on 1.20.x anyways.

boppreh

 Programming Language Checklist
by Colin McMillen, Jason Reed, and Elly Fong-Jones, 2011-10-10
updated by BoppreH, 2024-01-24

You appear to be advocating a new:
[ ] functional  [ ] imperative  [ ] object-oriented  [ ] stack-based  [ ] concurrent
[ ] interpreted  [ ] compiled  [ ] JIT  [ ] cloud  [ ] AI  [ ] beginner-friendly
[ ] academic-friendly  [ ] visual  [ ] sharable  [ ] esoteric
[ ] memory safe  [ ] memory unsafe  [ ] provable  [ ] Turing-incomplete
[ ] statically-typed  [ ] dynamically-typed  [ ] completely incomprehensible