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[paperdoorknob] / args.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 from contextlib import contextmanager
10 import os.path
11
12 from typing import Iterator
13
14 from xdg_base_dirs import xdg_cache_home
15
16 from fetch import CachingFetcher
17 from spec import Spec
18 from texify import PandocTexifier
19
20
21 def _command_line_parser() -> ArgumentParser:
22 parser = ArgumentParser(prog='paperdoorknob', description='Print glowfic')
23 parser.add_argument(
24 '--cache_path',
25 metavar='PATH',
26 help='Where to keep the http cache (instead of %(default)s)',
27 default=os.path.join(xdg_cache_home(), "paperdoorknob"))
28 parser.add_argument(
29 '--out',
30 help='The filename stem at which to write output ' +
31 '(eg: "%(default)s" produces %(default)s.tex, %(default)s.pdf, etc.)',
32 default='book')
33 parser.add_argument('--pandoc', help='Location of the pandoc executable')
34 parser.add_argument(
35 '--timeout',
36 help='How long to wait for HTTP requests, in seconds',
37 default=30)
38 parser.add_argument('url', help='URL to retrieve')
39 return parser
40
41
42 @contextmanager
43 def spec_from_commandline_args() -> Iterator[Spec]:
44 args = _command_line_parser().parse_args()
45 with CachingFetcher(args.cache_path, args.timeout) as fetcher:
46 with open(args.out + '.tex', 'wb') as texout:
47 yield Spec(args.url, fetcher, PandocTexifier(args.pandoc or 'pandoc'), texout)