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# $Id: parts.py 8993 2022-01-29 13:20:04Z milde $
# Authors: David Goodger <goodger@python.org>; Dmitry Jemerov
# Copyright: This module has been placed in the public domain.
"""
Directives for document parts.
"""
__docformat__ = 'reStructuredText'
from docutils import nodes, languages
from docutils.transforms import parts
from docutils.parsers.rst import Directive
from docutils.parsers.rst import directives
class Contents(Directive):
"""
Table of contents.
The table of contents is generated in two passes: initial parse and
transform. During the initial parse, a 'pending' element is generated
which acts as a placeholder, storing the TOC title and any options
internally. At a later stage in the processing, the 'pending' element is
replaced by a 'topic' element, a title and the table of contents proper.
"""
backlinks_values = ('top', 'entry', 'none')
def backlinks(arg):
value = directives.choice(arg, Contents.backlinks_values)
if value == 'none':
return None
else:
return value
optional_arguments = 1
final_argument_whitespace = True
option_spec = {'depth': directives.nonnegative_int,
'local': directives.flag,
'backlinks': backlinks,
'class': directives.class_option}
def run(self):
if not (self.state_machine.match_titles
or isinstance(self.state_machine.node, nodes.sidebar)):
raise self.error('The "%s" directive may not be used within '
'topics or body elements.' % self.name)
document = self.state_machine.document
language = languages.get_language(document.settings.language_code,
document.reporter)
if self.arguments:
title_text = self.arguments[0]
text_nodes, messages = self.state.inline_text(title_text,
self.lineno)
title = nodes.title(title_text, '', *text_nodes)
else:
messages = []
if 'local' in self.options:
title = None
else:
title = nodes.title('', language.labels['contents'])
topic = nodes.topic(classes=['contents'])
topic['classes'] += self.options.get('class', [])
# the latex2e writer needs source and line for a warning:
topic.source, topic.line = self.state_machine.get_source_and_line()
topic.line -= 1
if 'local' in self.options:
topic['classes'].append('local')
if title:
name = title.astext()
topic += title
else:
name = language.labels['contents']
name = nodes.fully_normalize_name(name)
if not document.has_name(name):
topic['names'].append(name)
document.note_implicit_target(topic)
pending = nodes.pending(parts.Contents, rawsource=self.block_text)
pending.details.update(self.options)
document.note_pending(pending)
topic += pending
return [topic] + messages
class Sectnum(Directive):
"""Automatic section numbering."""
option_spec = {'depth': int,
'start': int,
'prefix': directives.unchanged_required,
'suffix': directives.unchanged_required}
def run(self):
pending = nodes.pending(parts.SectNum)
pending.details.update(self.options)
self.state_machine.document.note_pending(pending)
return [pending]
class Header(Directive):
"""Contents of document header."""
has_content = True
def run(self):
self.assert_has_content()
header = self.state_machine.document.get_decoration().get_header()
self.state.nested_parse(self.content, self.content_offset, header)
return []
class Footer(Directive):
"""Contents of document footer."""
has_content = True
def run(self):
self.assert_has_content()
footer = self.state_machine.document.get_decoration().get_footer()
self.state.nested_parse(self.content, self.content_offset, footer)
return []
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