foundationdb/documentation/sphinx/extensions/relativelink.py

49 lines
1.9 KiB
Python

#
# relativelink.py
#
# This source file is part of the FoundationDB open source project
#
# Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from sphinx.addnodes import toctree
# This extension cruelly monkey patches sphinx.environment.BuildEnvironment so
# that toctree entries can contain relative internal links, using the syntax
# Name <relative://relative/path>
# This is translated into an href="relative/path"
# Relative links already work fine outside the toctree:
# Name <relative/path>_
def setup(app):
import sphinx.environment
from docutils import nodes
old_resolve = sphinx.environment.BuildEnvironment.resolve_toctree
def resolve_toctree(self, docname, builder, toctree, prune=True, maxdepth=0,
titles_only=False, collapse=False, includehidden=False):
result = old_resolve(self, docname, builder, toctree, prune=True, maxdepth=0,
titles_only=False, collapse=False, includehidden=False)
if result == None:
return result
for node in result.traverse( nodes.reference ):
if not node['internal'] and node['refuri'].startswith("relative://"):
node['refuri'] = node['refuri'][len("relative://"):]
return result
sphinx.environment.BuildEnvironment.resolve_toctree = resolve_toctree