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- from pelican import signals
- import re
- import html5lib
- RAW_FOOTNOTE_CONTAINERS = ["code"]
- def getText(node, recursive = False):
- """Get all the text associated with this node.
- With recursive == True, all text from child nodes is retrieved."""
- L = ['']
- for n in node.childNodes:
- if n.nodeType in (node.TEXT_NODE, node.CDATA_SECTION_NODE):
- L.append(n.data)
- else:
- if not recursive:
- return None
- L.append(getText(n) )
- return ''.join(L)
- def parse_for_footnotes(article_generator):
- for article in article_generator.articles:
- if "[ref]" in article._content and "[/ref]" in article._content:
- content = article._content.replace("[ref]", "<x-simple-footnote>").replace("[/ref]", "</x-simple-footnote>")
- parser = html5lib.HTMLParser(tree=html5lib.getTreeBuilder("dom"))
- dom = parser.parse(content)
- endnotes = []
- count = 0
- for footnote in dom.getElementsByTagName("x-simple-footnote"):
- pn = footnote
- leavealone = False
- while pn:
- if pn.nodeName in RAW_FOOTNOTE_CONTAINERS:
- leavealone = True
- break
- pn = pn.parentNode
- if leavealone:
- continue
- count += 1
- fnid = "sf-%s-%s" % (article.slug, count)
- fnbackid = "%s-back" % (fnid,)
- endnotes.append((footnote, fnid, fnbackid))
- number = dom.createElement("sup")
- number.setAttribute("id", fnbackid)
- numbera = dom.createElement("a")
- numbera.setAttribute("href", "#%s" % fnid)
- numbera.setAttribute("class", "simple-footnote")
- numbera.appendChild(dom.createTextNode(str(count)))
- txt = getText(footnote, recursive=True).replace("\n", " ")
- numbera.setAttribute("title", txt)
- number.appendChild(numbera)
- footnote.parentNode.insertBefore(number, footnote)
- if endnotes:
- ol = dom.createElement("ol")
- ol.setAttribute("class", "simple-footnotes")
- for e, fnid, fnbackid in endnotes:
- li = dom.createElement("li")
- li.setAttribute("id", fnid)
- while e.firstChild:
- li.appendChild(e.firstChild)
- backlink = dom.createElement("a")
- backlink.setAttribute("href", "#%s" % fnbackid)
- backlink.setAttribute("class", "simple-footnote-back")
- backlink.appendChild(dom.createTextNode(u'\u21a9'))
- li.appendChild(dom.createTextNode(" "))
- li.appendChild(backlink)
- ol.appendChild(li)
- e.parentNode.removeChild(e)
- dom.getElementsByTagName("body")[0].appendChild(ol)
- s = html5lib.serializer.htmlserializer.HTMLSerializer(omit_optional_tags=False, quote_attr_values=True)
- output_generator = s.serialize(html5lib.treewalkers.getTreeWalker("dom")(dom.getElementsByTagName("body")[0]))
- article._content = "".join(list(output_generator)).replace(
- "<x-simple-footnote>", "[ref]").replace("</x-simple-footnote>", "[/ref]").replace(
- "<body>", "").replace("</body>", "")
- if False:
- count = 0
- endnotes = []
- for f in footnotes:
- count += 1
- fnstr = '<a class="simple-footnote" name="%s-%s-back" href="#%s-%s"><sup>%s</a>' % (
- article.slug, count, article.slug, count, count)
- endstr = '<li id="%s-%s">%s <a href="#%s-%s-back">↑</a></li>' % (
- article.slug, count, f[len("[ref]"):-len("[/ref]")], article.slug, count)
- content = content.replace(f, fnstr)
- endnotes.append(endstr)
- content += '<h4>Footnotes</h4><ol class="simple-footnotes">%s</ul>' % ("\n".join(endnotes),)
- article._content = content
- def register():
- signals.article_generator_finalized.connect(parse_for_footnotes)
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