forked from varia/varia.website
65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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Extract Table of Content
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========================
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A Pelican plugin to extract table of contents (ToC) from `article.content` and
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place it in its own `article.toc` variable for use in templates.
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"""
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from os import path
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from bs4 import BeautifulSoup
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from pelican import signals, readers, contents
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import logging
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logger = logging.getLogger(__name__)
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def extract_toc(content):
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if isinstance(content, contents.Static):
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return
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soup = BeautifulSoup(content._content, 'html.parser')
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filename = content.source_path
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extension = path.splitext(filename)[1][1:]
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toc = None
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# default Markdown reader
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if not toc and readers.MarkdownReader.enabled and extension in readers.MarkdownReader.file_extensions:
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toc = soup.find('div', class_='toc')
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if toc:
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toc.extract()
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# default reStructuredText reader
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if not toc and readers.RstReader.enabled and extension in readers.RstReader.file_extensions:
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toc = soup.find('div', class_='contents topic')
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if toc:
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toc.extract()
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tag = BeautifulSoup(str(toc), 'html.parser')
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tag.div['class'] = 'toc'
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tag.div['id'] = ''
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p = tag.find('p', class_='topic-title first')
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if p:
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p.extract()
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toc = tag
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# Pandoc reader (markdown and other formats)
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if 'pandoc_reader' in content.settings['PLUGINS']:
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try:
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from pandoc_reader import PandocReader
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except ImportError:
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PandocReader = False
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if not toc and PandocReader and PandocReader.enabled and extension in PandocReader.file_extensions:
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toc = soup.find('nav', id='TOC')
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if toc:
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toc.extract()
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content._content = soup.decode()
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content.toc = toc.decode()
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if content.toc.startswith('<html>'):
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content.toc = content.toc[12:-14]
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def register():
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signals.content_object_init.connect(extract_toc)
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