hello-dosdl/compress-targets.py

#!/usr/bin/env python
import json
import sys

alphabet = 'abcdefghijklmnopqrstuvwxyz*'

srcpath = sys.argv[1]
targetpath = sys.argv[2]

with open(srcpath, 'r') as f:
	all_words = json.load(f)

# 'murky' is the rarest word we'll use
# https://github.com/lynn/hello-wordl/blob/7da40c1f067eb1ec157d4c5b7a9bd8257ed39342/src/Game.tsx#L34
words = []
for word in all_words:
	words.append(word)
	if word == 'murky': break

# We only care about 5-letter words
words = [word for word in words if len(word) == 5]

array = []
for word in words:
	number = 0
	for index, letter in enumerate(word):
		number += alphabet.index(letter) << (5 * index)
	packed = bytes([number & 0xff, (number >> 8) & 0xff, (number >> 16) & 0xff, number >> 24])
	array.append(packed)

with open(targetpath, 'w') as f:
	f.write('targets:\n')
	for packed in array:
		f.write(f'\tdb {", ".join(str(byte) for byte in packed)}\n')