Recover Stylish styles after webextension migration

stylish_dump.py

#!/usr/bin/python
# Dumps pre-webextension Stylish styles to CSS files

import os
import json

def dump_styles():
    dump_dir = os.path.join(os.getcwd(), 'style_dump')
    style_file = os.path.join(os.getcwd(), 'stylish-storage.js')
    stylish = json.load(open(style_file, 'r'))
    
    if not os.path.exists(dump_dir):
        os.mkdir(dump_dir)
    
    for s in stylish['styles']:
        out_file = os.path.join(dump_dir, str(s['id']).zfill(2) + '.css')
        with open(out_file, 'w+') as f:
            f.write('/* Name: ' + s['name'] + '\n')
            f.write(' * ID: ' + str(s['id']).zfill(2) + '\n')
            f.write(' * Enabled: ' + str(s['enabled']) + '\n')
            if 'url' in s and s['url']:
                f.write(' * URL: ' + s['url'] + '\n')
            if 'updateUrl' in s and s['updateUrl']:
                f.write(' * Update URL: ' + s['updateUrl'] + '\n')
            if 'md5Url' in s and s['md5Url']:
                f.write(' * MD5 URL: ' + s['md5Url'] + '\n')
            f.write(' * Code follows' + '\n' + ' */' + '\n\n')
            f.write(s['code'])

if __name__ == '__main__':
    dump_styles()

Note: This is really only useful for the 2.0.7 era Stylish, which migrated to using storage.js. Extracting the styles from the old school stylish.sqlite is left as an exercise to the reader.