You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
2.1 KiB
54 lines
2.1 KiB
# $Id: components.py 9037 2022-03-05 23:31:10Z milde $
|
|
# Author: David Goodger <goodger@python.org>
|
|
# Copyright: This module has been placed in the public domain.
|
|
|
|
"""
|
|
Docutils component-related transforms.
|
|
"""
|
|
|
|
from docutils.transforms import Transform
|
|
|
|
__docformat__ = 'reStructuredText'
|
|
|
|
|
|
class Filter(Transform):
|
|
|
|
"""
|
|
Include or exclude elements which depend on a specific Docutils component.
|
|
|
|
For use with `nodes.pending` elements. A "pending" element's dictionary
|
|
attribute ``details`` must contain the keys "component" and "format". The
|
|
value of ``details['component']`` must match the type name of the
|
|
component the elements depend on (e.g. "writer"). The value of
|
|
``details['format']`` is the name of a specific format or context of that
|
|
component (e.g. "html"). If the matching Docutils component supports that
|
|
format or context, the "pending" element is replaced by the contents of
|
|
``details['nodes']`` (a list of nodes); otherwise, the "pending" element
|
|
is removed.
|
|
|
|
For example, up to version 0.17, the reStructuredText "meta"
|
|
directive created a "pending" element containing a "meta" element
|
|
(in ``pending.details['nodes']``).
|
|
Only writers (``pending.details['component'] == 'writer'``)
|
|
supporting the "html", "latex", or "odf" formats
|
|
(``pending.details['format'] == 'html,latex,odf'``) included the
|
|
"meta" element; it was deleted from the output of all other writers.
|
|
|
|
This transform is no longer used by Docutils, it may be removed in future.
|
|
"""
|
|
# TODO: clean up or keep this for 3rd party (or possible future) use?
|
|
# (GM 2021-05-18)
|
|
|
|
default_priority = 780
|
|
|
|
def apply(self):
|
|
pending = self.startnode
|
|
component_type = pending.details['component'] # 'reader' or 'writer'
|
|
formats = (pending.details['format']).split(',')
|
|
component = self.document.transformer.components[component_type]
|
|
for format in formats:
|
|
if component.supports(format):
|
|
pending.replace_self(pending.details['nodes'])
|
|
break
|
|
else:
|
|
pending.parent.remove(pending)
|
|
|