dschlueter
5f7c352df1
Neues Modul epub2md/css.py: Es wertet die Stylesheets des Buches aus
(Typ-, Klassen- und ID-Selektoren, Nachfahre/Kind, Spezifität,
style-Attribute; @media und Pseudoklassen werden ignoriert). Daraus werden:
- fett/kursiv → **/*, unterstrichen → <u>, durchgestrichen → ~~,
vertical-align super/sub → <sup>/<sub>
- Monospace-Einzelwörter → Inline-Code
- display:none → Element entfällt
Das gilt im Fließtext, für ganze Absätze und in HTML-Tabellen (dort als
HTML-Tags). Direkt aneinanderstoßende gleiche Hervorhebungen werden
zusammengefasst ('*x**y*' brach Markdown; Mathebuch: 305 → 249 Stellen).
Beispiele: C-Buch 799× kursiv und 648× fett, die vorher verloren gingen.
Abschaltbar mit --no-css-emphasis.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
68 lines
3.9 KiB
Python
68 lines
3.9 KiB
Python
"""Typography and layout: invisible characters, CSS emphasis, scene breaks, boxes, styles, page markers."""
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from conftest import Book, Doc
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ZW, SHY = "", ""
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def test_p6_invisible_characters_removed_outside_code(convert):
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body = (f"<h1>Kapitel 1.{ZW}1</h1><p>Lese{SHY}rinnen und 1.{ZW}1 sowie{ZW}Wort.</p>"
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f"<pre>a{ZW}b</pre><p><code>x{SHY}y</code></p>")
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run = convert(Book(docs=[Doc("c.xhtml", body)]))
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text = run.chapter("001")
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assert "Leserinnen und 1.1 sowieWort." in text
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assert "# Kapitel 1.1" in text and 'chapter_title: "Kapitel 1.1"' in text
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assert f"a{ZW}b" in text and f"x{SHY}y" in text # code stays verbatim
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assert run.report["text_cleanup"]["invisible_chars_removed"] == 4
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kept = convert(Book(docs=[Doc("c.xhtml", body)]), "--keep-invisible-chars").chapter("001")
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assert f"Lese{SHY}rinnen" in kept
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CSS = b""".i { font-style: italic } .b { font-weight: bold } span.u { text-decoration: underline }
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.s { text-decoration: line-through } .hoch { vertical-align: super } .weg { display: none }
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li p.first > span.b { font-weight: normal; font-family: monospace } .schrift-c { font-family: "Courier New", monospace }
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p.zitat { font-style: italic } h2.t { font-weight: bold; font-style: italic } .url { text-decoration: underline }
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@media amzn-kf8 { .i { font-style: normal } }"""
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def styled(body: str, *args: str, convert=None):
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return convert(Book(docs=[Doc("c.xhtml", body)], media={"style.css": CSS}), *args)
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def test_p1_css_classes_become_markdown_emphasis(convert):
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body = ('<h1>K</h1><p>Ein <span class="i">kursives</span> und <span class="b">fettes</span> Wort, '
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'<span class="u">unterstrichen</span>, <span class="s">gestrichen</span>, x<span class="hoch">2</span>, '
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'<span class="weg">[»] </span>sichtbar, <span class="schrift-c">printf</span> und '
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'<span class="schrift-c">zwei Wörter</span>, <span style="font-weight:700">inline</span>, '
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'<span class="url"><a href="https://example.org">example.org</a></span>.</p>'
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'<ul><li><p class="first"><span class="b">nicht fett im Listenkopf</span></p></li></ul>'
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'<p class="zitat">Ein ganzer kursiver Absatz mit <em>Betonung</em>.</p>'
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'<h2 class="t">Überschrift bleibt</h2><p><em class="i">nur einmal</em></p><pre><span class="b">code</span></pre>')
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run = styled(body, convert=convert)
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text = run.chapter("001")
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assert "Ein *kursives* und **fettes** Wort, <u>unterstrichen</u>, ~~gestrichen~~, x<sup>2</sup>, sichtbar," in text
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assert "`printf` und zwei Wörter, **inline**, [example.org](https://example.org)." in text
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assert "[»]" not in text and "\\[»\\]" not in text
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assert "- nicht fett im Listenkopf" in text
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assert "*Ein ganzer kursiver Absatz mit Betonung.*" in text
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assert "## Überschrift bleibt" in text and "*nur einmal*" in text and "**nur einmal**" not in text
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assert "```\ncode\n```" in text
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assert run.report["css"]["hidden_elements"] == 1
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assert run.report["css"]["applied"]["italic"] >= 2
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plain = styled(body, "--no-css-emphasis", convert=convert).chapter("001")
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assert "Ein kursives und fettes Wort" in plain
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def test_p1_css_emphasis_inside_html_tables(convert):
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body = ('<h1>T</h1><table><tr><td colspan="2"><span class="i">kursiv</span> und <span class="b">fett</span></td></tr>'
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'<tr><td>a</td><td>b</td></tr></table>')
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text = styled(body, convert=convert).chapter("001")
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assert "<em>kursiv</em> und <strong>fett</strong>" in text
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def test_adjacent_emphasis_is_merged(convert):
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body = ('<h1>K</h1><p>Fläche (A=r<sup>2</sup><span class="i">×</span><span class="i">π</span>) und '
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'<em>x</em><em>y</em> sowie <strong>a</strong><strong>b</strong> und <em>c</em> <em>d</em>.</p>')
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text = styled(body, convert=convert).chapter("001")
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assert "<sup>2</sup>*×π*" in text
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assert "*xy*" in text and "**ab**" in text and "*c* *d*" in text
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