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#!/usr/bin/env python3
#
# revert_footnote_style.py
"""
Reverts the docutils footnote behaviour from ``>=0.18`` to that of ``<=0.17``.
.. versionadded:: 3.1.2
.. extensions:: sphinx_toolbox.tweaks.revert_footnote_style
-----
"""
#
# Copyright © 2022 Dominic Davis-Foster <dominic@davis-foster.co.uk>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
#
# Based on docutils
# | Copyright © 2016 David Goodger, Günter Milde
# | BSD Licensed
# | All rights reserved.
# |
# | Redistribution and use in source and binary forms, with or without
# | modification, are permitted provided that the following conditions are
# | met:
# |
# | * Redistributions of source code must retain the above copyright
# | notice, this list of conditions and the following disclaimer.
# |
# | * Redistributions in binary form must reproduce the above copyright
# | notice, this list of conditions and the following disclaimer in the
# | documentation and/or other materials provided with the distribution.
# |
# | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# | HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# 3rd party
import docutils
from sphinx.application import Sphinx
from sphinx.writers.html import HTMLTranslator
from sphinx.writers.html5 import HTML5Translator
# this package
from sphinx_toolbox.utils import SphinxExtMetadata, metadata_add_version
__all__ = ["setup"]
def visit_footnote(self: HTML5Translator, node: docutils.nodes.footnote) -> None: # pragma: no cover
if not self.in_footnote_list:
listnode = node.copy()
listnode["ids"] = []
classes = [node.tagname, self.settings.footnote_references]
self.body.append(self.starttag(listnode, "dl", CLASS=' '.join(classes))) # role="note"
self.in_footnote_list = True
def depart_footnote(self, node: docutils.nodes.footnote) -> None: # pragma: no cover
self.body.append('</dd>\n')
if not isinstance(node.next_node(descend=False, siblings=True), docutils.nodes.footnote):
self.body.append('</dl>\n')
self.in_footnote_list = False
def visit_footnote_reference(self, node: docutils.nodes.footnote_reference) -> None: # pragma: no cover
href = '#' + node["refid"]
classes = ["footnote-reference", self.settings.footnote_references]
self.body.append(self.starttag(node, 'a', suffix='', CLASS=' '.join(classes), href=href)) # role='doc-noteref'
def depart_footnote_reference(self, node: docutils.nodes.footnote_reference) -> None: # pragma: no cover
self.body.append("</a>")
# footnote and citation labels:
def visit_label(self, node: docutils.nodes.label) -> None: # pragma: no cover
if (isinstance(node.parent, docutils.nodes.footnote)):
classes = self.settings.footnote_references
else:
classes = "brackets"
# pass parent node to get id into starttag:
self.body.append(self.starttag(node.parent, "dt", '', CLASS="label"))
self.body.append(self.starttag(node, "span", '', CLASS=classes))
# footnote/citation backrefs:
if self.settings.footnote_backlinks:
backrefs = node.parent.get("backrefs", [])
if len(backrefs) == 1:
self.body.append('<a class="fn-backref" href="#%s">' % backrefs[0])
def depart_label(self, node: docutils.nodes.label) -> None: # pragma: no cover
if self.settings.footnote_backlinks:
backrefs = node.parent["backrefs"]
if len(backrefs) == 1:
self.body.append("</a>")
self.body.append("</span>")
if self.settings.footnote_backlinks and len(backrefs) > 1:
backlinks = [f'<a href="#{ref}">{i}</a>' for (i, ref) in enumerate(backrefs, 1)]
self.body.append('<span class="fn-backref">(%s)</span>' % ','.join(backlinks))
self.body.append('</dt>\n<dd>')
@metadata_add_version
def setup(app: Sphinx) -> SphinxExtMetadata:
"""
Setup :mod:`sphinx_toolbox.tweaks.revert_footnote_style`.
:param app: The Sphinx application.
"""
if docutils.__version_info__ >= (0, 18): # pragma: no cover
app.add_node(
docutils.nodes.footnote,
html=(visit_footnote, depart_footnote),
override=True,
)
app.add_node(
docutils.nodes.footnote_reference,
html=(visit_footnote_reference, depart_footnote_reference),
override=True,
)
app.add_node(
docutils.nodes.label,
html=(visit_label, depart_label),
override=True,
)
HTMLTranslator.in_footnote_list = False
HTML5Translator.in_footnote_list = False
return {"parallel_read_safe": True}
|
