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
  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='beside',
  60         help='Whether to put character and author information `beside` or `below` the icon ' +
  61              '(default: beside)')
  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: bytes
  91     if args.layout == 'below':
  92         layout = BelowIconLayout
  93     elif args.layout == 'beside':
  94         layout = BesideIconLayout
  95     else:
  96         raise ValueError(f'Unknown layout: {args.layout}')
  97     log = (lambda _: None) if args.quiet else _print_status
  98     with CachingFetcher(args.cache_path, args.timeout, log) as fetcher:
  99         with open(args.out + '.tex', 'wb') as texout:
 100             yield Spec(
 101                 args.url,
 102                 fetcher,
 103                 DiskImageStore(args.out + '_images', fetcher),
 104                 lambda x: ApplyHTMLFilters(args.htmlfilters, x),
 105                 lambda x: ApplyDOMFilters(args.domfilters, x),
 106                 texifier,
 107                 lambda x: ApplyTexFilters(args.texfilters, x),
 108                 args.image_size,
 109                 layout,
 110                 args.geometry,
 111                 texout,
 112                 log)