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Düzenlenen Dosya: parts.py

# $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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