generate.py

import os

ICON_SIZE = 1024

def make_file(directory, name, out):
    out.write('<ha-iconset-svg name="{}" size="{}"><svg><defs>\n'.format(name, ICON_SIZE))
    for f in os.listdir(directory):
        if not f.endswith('.svg'):
            continue
        with open(os.path.join(directory, f), 'r') as fp:
            name = os.path.splitext(f)[0]
            data = fp.read()
            size_start = data.find('viewBox="')+len('viewBox="')
            size_end = data[size_start:].find('">')
            size = data[size_start:size_start+size_end].split(' ')
            width = float(size[2])
            height = float(size[3])
            scale = max(width, height)/ICON_SIZE
            start = data.find('<path')
            out.write('<g id="{0}" transform="scale({1} {1})">'.format(name, 1/scale) + data[start:-6] + '</g>\n')
    out.write('</defs></svg></ha-iconset-svg>')

# Run this in Font-Awesome/svgs

# with open("hass-fontawesome-brands.html", 'w') as out:
#     make_file('brands', 'fab', out)
# with open("hass-fontawesome-regular.html", 'w') as out:
#     make_file('regular', 'far', out)
# with open("hass-fontawesome-solid.html", 'w') as out:
#     make_file('solid', 'fas', out)