Customize Firefox Tiles

maketiles.py

#!/usr/bin/env python3

import sys as _sys
import json as _json
import base64 as _base64
import logging as _logging
import mimetypes as _mimetypes
import urllib.parse as _url
import configparser as _configparser

def parse_config(file):
    config = _configparser.ConfigParser()
    config.read(file)
    return config

def generate_image_uri(filename):
    try:
        with open(filename, 'rb') as f:
            imagedata = f.read()
    except Exception as e:
        _logging.error('Cannot open %s: %s', filename, e)
        return
    imagedata = _base64.b64encode(imagedata)
    type, encoding = _mimetypes.guess_type(filename)
    if not type:
        return
    return "data:{};base64,{}".format(type, _url.quote(imagedata))

def get_transparent_image():
    return "data:image/png;base64," + \
        "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQAAAAA3bvkkAAAABGdBTUEAALGPC/" + \
        "xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8" + \
        "AAAAAnRSTlMAAHaTzTgAAAACYktHRAAB3YoTpAAAAApJREFUCNdjYAAAAAIAAe" + \
        "IhvDMAAAAldEVYdGRhdGU6Y3JlYXRlADIwMTQtMTItMjVUMTE6Mjk6MjMrMTE6" + \
        "MDCLn0VkAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDE0LTEyLTI1VDExOjI5OjIzKz" + \
        "ExOjAw%2BsL92AAAAABJRU5ErkJggg%3D%3D"

def generate_data_item(section):
    if 'image' not in section:
        return
    imageuri = generate_image_uri(section['image'])

    if not imageuri or \
            'url' not in section or \
            'title' not in section:
        return

    item = {
            'url': section['url'],
            'title': section['title'],
            'type': 'custom',
            'imageURI': imageuri,
            'bgColor': "",
            'enhancedImageURI': get_transparent_image()
            }
    if 'color' in section:
        item['bgColor'] = section['color']
    if 'enhanced' in section:
        enhancedUri = generate_image_uri(section['enhanced'])
        if enhancedUri:
            item['enhancedImageURI'] = enhancedUri
    
    return item

def generate_data(config):
    data = []
    for name in config.sections():
        item = generate_data_item(config[name])
        if item:
            data.append(item)
    return data

def generate_json(data, locale='en-US'):
    return _json.dumps({locale: data})

def usage():
    print("Usage: {} config [locale]".format(_sys.argv[0]))

def main():
    if len(_sys.argv) < 2:
        usage()
        exit(2)

    locale = 'en-US'
    if len(_sys.argv) >= 3:
        locale = _sys.argv[2]

    config = parse_config(_sys.argv[1])
    data = generate_data(config)
    json = generate_json(data, locale)
    print(json)

if __name__ == '__main__':
    main()

tiles.conf.sample

[dxr]
url: http://dxr.mozilla.org/
color: #cccccc
image: dxr.png
title: Mozilla DXR

[bugzilla]
url: https://bugzilla.mozilla.org/
color: #E5E3DC
image: bugzilla.png
title: Bugzilla