Rename html → dom

[paperdoorknob] / paperdoorknob.py

# paperdoorknob: Print glowfic
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, version 3.

from typing import Any, Iterable

from bs4 import BeautifulSoup
from bs4.element import Tag

from args import spec_from_commandline_args
from glowfic import flatURL, makeChunk, renderChunk, Thread
from spec import Spec


def parse(content: bytes) -> BeautifulSoup:
    return BeautifulSoup(content, 'html.parser')


def ilen(it: Iterable[Any]) -> int:
    return sum(1 for _ in it)


def get_title(dom: BeautifulSoup) -> str | None:
    span = dom.findChild("span", id="post-title")
    if not isinstance(span, Tag):
        return None
    return span.text


def process(spec: Spec) -> None:
    spec.texout.write(br'''\documentclass{article}
\usepackage{booktabs}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{soul}
\usepackage{varwidth}
\usepackage{wrapstuff}
''')
    if spec.geometry is not None:
        spec.texout.write(br'\usepackage[' +
                          spec.geometry.encode('UTF-8') +
                          b']{geometry}\n')
    spec.texout.write(br'''\begin{document}
\newcommand{\href}[2]{#2\footnote{\detokenize{#1}}}
\def\glowiconsize{%fmm}
\newcommand{\glowicon}[1]{\includegraphics[
  width=\glowiconsize,height=\glowiconsize,keepaspectratio
]{#1}}
\newcommand{\ifnotempty}[2]{\expandafter\ifx\expandafter\relax
  \detokenize{#1}\relax\else #2\fi}
%s
''' % (spec.icon_size, spec.layout))
    url = flatURL(spec.url)
    spec.log('Fetching HTML...\r')
    html = spec.fetcher.fetch(url)
    spec.log('Parsing HTML...\r')
    dom = parse(spec.htmlfilter(html))
    thread = Thread(dom)
    spec.log('Counting chunks...\r')
    num_chunks = ilen(thread.chunkDOMs())
    title = get_title(dom) or "chunk"
    for i, r in enumerate(thread.chunkDOMs()):
        percent = 100.0 * i / num_chunks
        spec.log(f'Processing {title} {i} of {num_chunks} ({percent:.1f}%)\r')
        spec.domfilter(r)
        chunk = makeChunk(r, spec.images)
        spec.texout.write(spec.texfilter(renderChunk(spec.texifier, chunk)))
    spec.log('')
    spec.texout.write(b'\\end{document}\n')


def main() -> None:
    with spec_from_commandline_args() as spec:
        process(spec)


if __name__ == '__main__':
    main()