git.scottworley.com Git - paperdoorknob/blob - paperdoorknob.py

   1 # paperdoorknob: Print glowfic
   2 #
   3 # This program is free software: you can redistribute it and/or modify it
   4 # under the terms of the GNU General Public License as published by the
   5 # Free Software Foundation, version 3.
   6
   7
   8 from argparse import ArgumentParser
   9 import os.path
  10
  11 from typing import Iterable
  12
  13 from bs4 import BeautifulSoup
  14 from bs4.element import Tag
  15 import requests
  16 import requests_cache
  17 from xdg_base_dirs import xdg_cache_home
  18
  19
  20 class Post:
  21     def __init__(self, html: BeautifulSoup) -> None:
  22         self._html = html
  23
  24     def text(self) -> Tag:
  25         body = self._html.body
  26         assert body
  27         text = body.find_next("div", class_="post-post")
  28         assert isinstance(text, Tag)
  29         return text
  30
  31     def replies(self) -> Iterable[Tag]:
  32         replies = self._html.find_all("div", class_="post-reply")
  33         assert all(isinstance(r, Tag) for r in replies)
  34         return replies
  35
  36
  37 def command_line_parser() -> ArgumentParser:
  38     parser = ArgumentParser(prog='paperdoorknob', description='Print glowfic')
  39     parser.add_argument(
  40         '--cache_path',
  41         metavar='PATH',
  42         help='Where to keep the http cache (instead of %(default)s)',
  43         default=os.path.join(xdg_cache_home(), "paperdoorknob"))
  44     parser.add_argument(
  45         '--timeout',
  46         help='How long to wait for HTTP requests, in seconds',
  47         default=30)
  48     parser.add_argument('url', help='URL to retrieve')
  49     return parser
  50
  51
  52 def fetch(url: str, session: requests.Session, timeout: int) -> BeautifulSoup:
  53     with session.get(url, timeout=timeout) as r:
  54         r.raise_for_status()
  55         return BeautifulSoup(r.text, 'html.parser')
  56
  57
  58 def main() -> None:
  59     args = command_line_parser().parse_args()
  60     with requests_cache.CachedSession(args.cache_path, cache_control=True) as session:
  61         html = fetch(args.url, session, args.timeout)
  62         Post(html)
  63
  64
  65 if __name__ == '__main__':
  66     main()