Take a Handmade Hero .zip and make it a git repo, with one commit for each day.

hh_to_git.sh

#!/bin/bash

# This script makes a HandmadeHero directory and populates it as a git repo with the supplied .zip file.
# Example: ./hh_to_git.sh handmade_hero_065_source.zip

args=("$@")

if [ ${#args[@]} -ne 1 ]
then
    echo "Need one argument: the source zip file."
    exit
fi

source=$(readlink -f "${args[0]}")


repo="HandmadeHero"
mkdir -p "$repo"
rm -rf "$repo/.git"
cd "$repo"
git init

unzip -o "$source" -d ./sources


folders="$(ls "./sources" | sort)"


while read -r folder; do
    base=$(basename "$folder")
    day="${base:18:3}"

    echo "FOLDER $folder"
    tag="day$day"

    unzip -o "./sources/$folder"
    git add .
    git commit -am "Importing code for day $day" && git tag "$tag"
done <<< "$folders"