git.scottworley.com Git - paperdoorknob/blob - 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 from sys import stderr
  12
  13 from typing import Iterator
  14
  15 from xdg_base_dirs import xdg_cache_home
  16
  17 from domfilter import ApplyDOMFilters, DOMFilters
  18 from fetch import CachingFetcher
  19 from glowfic import BesideIconLayout, BelowIconLayout, Layout
  20 from htmlfilter import ApplyHTMLFilters, HTMLFilters
  21 from texfilter import ApplyTexFilters, TexFilters
  22 from images import DiskImageStore
  23 from spec import Spec
  24 from texify import PandocTexifier
  25
  26
  27 def _print_status(msg: str) -> None:
  28     print(msg, file=stderr, end='' if msg.endswith('\r') else '\n')
  29
  30
  31 def _command_line_parser() -> ArgumentParser:
  32     parser = ArgumentParser(prog='paperdoorknob', description='Print glowfic')
  33     parser.add_argument(
  34         '--cache_path',
  35         metavar='PATH',
  36         help='Where to keep the http cache (instead of %(default)s)',
  37         default=os.path.join(xdg_cache_home(), "paperdoorknob"))
  38     parser.add_argument(
  39         '--domfilters',
  40         help='Which DOM filters to use (default: %(default)s)',
  41         default=','.join(f[0] for f in DOMFilters))
  42     parser.add_argument(
  43         '--geometry',
  44         help='''Page size and margin control
  45 See https://faculty.bard.edu/bloch/geometry.pdf for details
  46 (default: %(default)s)''',
  47         default='paperwidth=5.5in,paperheight=8.5in,nohead,' +
  48         'tmargin=15mm,hmargin=15mm,bmargin=17mm,foot=4mm')
  49     parser.add_argument(
  50         '--htmlfilters',
  51         help='Which HTML filters to use (default: %(default)s)',
  52         default=','.join(f[0] for f in HTMLFilters))
  53     parser.add_argument(
  54         '--image_size',
  55         help='How large the icon images are, in mm',
  56         default=20)
  57     parser.add_argument(
  58         '--layout',
  59         default='below',
  60         help='Whether to put character and author information `beside` or `below` the icon ' +
  61              '(default: below)')
  62     parser.add_argument(
  63         '--out',
  64         help='The filename stem at which to write output ' +
  65              '(eg: "%(default)s" produces %(default)s.tex, %(default)s.pdf, etc.)',
  66         default='book')
  67     parser.add_argument('--pandoc', help='Location of the pandoc executable')
  68     parser.add_argument(
  69         '--quiet',
  70         action='store_true',
  71         help='Suppress progress messages')
  72     parser.add_argument(
  73         '--texfilters',
  74         help='Which TeX filters to use (default: %(default)s)',
  75         default=','.join(f[0] for f in TexFilters))
  76     parser.add_argument(
  77         '--timeout',
  78         help='How long to wait for HTTP requests, in seconds',
  79         default=30)
  80     parser.add_argument(
  81         'url',
  82         help='URL to retrieve (example: https://www.projectlawful.com/posts/4582 )')
  83     return parser
  84
  85
  86 @contextmanager
  87 def spec_from_commandline_args() -> Iterator[Spec]:
  88     args = _command_line_parser().parse_args()
  89     texifier = PandocTexifier(args.pandoc or 'pandoc')
  90     layout: Layout
  91     if args.layout == 'below':
  92         layout = BelowIconLayout(texifier, args.image_size)
  93     elif args.layout == 'beside':
  94         layout = BesideIconLayout(texifier, args.image_size)
  95     else:
  96         raise ValueError(f'Unknown layout: {args.layout}')
  97     with CachingFetcher(args.cache_path, args.timeout) as fetcher:
  98         with open(args.out + '.tex', 'wb') as texout:
  99             yield Spec(
 100                 args.url,
 101                 fetcher,
 102                 DiskImageStore(args.out + '_images', fetcher),
 103                 lambda x: ApplyHTMLFilters(args.htmlfilters, x),
 104                 lambda x: ApplyDOMFilters(args.domfilters, x),
 105                 lambda x: ApplyTexFilters(args.texfilters, x),
 106                 layout,
 107                 args.geometry,
 108                 texout,
 109                 (lambda _: None) if args.quiet else _print_status)