Download Google fonts

fetch-gfonts

#!/usr/bin/python3
# TODO: Does not support woff2 fonts (as served for Chrome)
import os, sys, re
import requests

def fetch_fonts(input_css, font_path="fonts"):
    output_css = []
    for line in input_css.split("\n"):
        if "https://" in line:
            name = re.match(r".*local\('(.*?)'\).*", line).groups()[0]
            url = re.match(r".*url\((.*?)\).*", line).groups()[0]
            local_name = name.replace(" ", "-").lower() + "." + \
                         url.split(".")[-1]

            if os.path.exists(local_name):
                print("Skipping %s (already downloaded)." % local_name)
            else:
                print("Downloading %s..." % local_name)
                with open(local_name, "wb") as f:
                    f.write(requests.get(url).content)

            new_line = re.sub(r"url\(.*?\)", "url(%s)" %
                              os.path.join(font_path, local_name), line)
        else:
            new_line = line

        output_css.append(new_line)
    return "\n".join(output_css)

if __name__ == "__main__":
    from argparse import ArgumentParser
    
    parser = ArgumentParser(description=
                            "Fetch fonts from Google Font CSS files. "
                            "You must enter Google CSS as stdin.")
    parser.add_argument("--font-path", dest="font_path",
                        default="fonts", type=str, 
                        help="The path prefix where fonts will be accessed by "
                             "the browser")
    
    args = parser.parse_args()
    
    input_css = sys.stdin.read()
    output_css = fetch_fonts(input_css, args.font_path)
    print(output_css)