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import html5lib
import six
from pelican import signals
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 = [u""]
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 u"".join(L)
def sequence_gen(genlist):
for gen in genlist:
for elem in gen:
yield elem
def parse_for_footnotes(article_or_page_generator):
all_content = [
getattr(article_or_page_generator, attr, None)
for attr in [u"articles", u"drafts", u"pages"]
]
all_content = [x for x in all_content if x is not None]
for article in sequence_gen(all_content):
if u"[ref]" in article._content and u"[/ref]" in article._content:
content = article._content.replace(
u"[ref]", u"<x-simple-footnote>"
).replace(u"[/ref]", u"</x-simple-footnote>")
parser = html5lib.HTMLParser(tree=html5lib.getTreeBuilder(u"dom"))
dom = parser.parse(content)
endnotes = []
count = 0
for footnote in dom.getElementsByTagName(u"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 = u"sf-%s-%s" % (article.slug, count)
fnbackid = u"%s-back" % (fnid,)
endnotes.append((footnote, fnid, fnbackid))
number = dom.createElement(u"sup")
number.setAttribute(u"id", fnbackid)
number.setAttribute(u"class", u"simple-footnote")
number.appendChild(dom.createTextNode(six.text_type(count)))
txt = getText(footnote, recursive=True).replace(u"\n", u" ")
footnote_container = dom.createElement(u"span")
footnote_container.setAttribute(u"class", u"simple-footnote-container")
footnote_content = dom.createElement(u"span")
footnote_content.appendChild(
dom.createTextNode("[" + six.text_type(count) + "] ")
)
footnote_content.appendChild(footnote.firstChild)
footnote_content.setAttribute(u"class", u"simple-footnote-content")
footnote_container.appendChild(footnote_content)
# print(footnote.firstChild)
number.appendChild(footnote_container)
footnote.parentNode.insertBefore(number, footnote)
footnote.parentNode.insertBefore(footnote_container, footnote)
if endnotes:
ol = dom.createElement(u"ol")
ol.setAttribute(u"class", u"simple-footnotes")
for e, fnid, fnbackid in endnotes:
# li = dom.createElement(u"li")
# li.setAttribute(u"id", fnid)
# while e.firstChild:
# li.appendChild(e.firstChild)
# backlink = dom.createElement(u"a")
# backlink.setAttribute(u"href", u"#%s" % fnbackid)
# backlink.setAttribute(u"class", u"simple-footnote-back")
# backlink.appendChild(dom.createTextNode(u'\u21a9'))
# li.appendChild(dom.createTextNode(u" "))
# li.appendChild(backlink)
# ol.appendChild(li)
e.parentNode.removeChild(e)
dom.getElementsByTagName(u"body")[0].appendChild(ol)
s = html5lib.serializer.HTMLSerializer(
omit_optional_tags=False, quote_attr_values="legacy"
)
output_generator = s.serialize(
html5lib.treewalkers.getTreeWalker(u"dom")(
dom.getElementsByTagName(u"body")[0]
)
)
article._content = (
u"".join(list(output_generator))
.replace(u"<x-simple-footnote>", u"[ref]")
.replace(u"</x-simple-footnote>", u"[/ref]")
.replace(u"<body>", u"")
.replace(u"</body>", u"")
)
def register():
signals.article_generator_finalized.connect(parse_for_footnotes)
signals.page_generator_finalized.connect(parse_for_footnotes)