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"""
HeaderID Extension for Python-Markdown
======================================

Auto-generate id attributes for HTML headers.

See <https://pythonhosted.org/Markdown/extensions/header_id.html>
for documentation.

Original code Copyright 2007-2011 [Waylan Limberg](http://achinghead.com/).

All changes Copyright 2011-2014 The Python Markdown Project

License: [BSD](http://www.opensource.org/licenses/bsd-license.php)

"""

from __future__ import absolute_import
from __future__ import unicode_literals
from . import Extension
from ..treeprocessors import Treeprocessor
from ..util import parseBoolValue
from .toc import slugify, unique, stashedHTML2text
import warnings


class HeaderIdTreeprocessor(Treeprocessor):
    """ Assign IDs to headers. """

    IDs = set()

    def run(self, doc):
        start_level, force_id = self._get_meta()
        slugify = self.config['slugify']
        sep = self.config['separator']
        for elem in doc:
            if elem.tag in ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']:
                if force_id:
                    if "id" in elem.attrib:
                        id = elem.get('id')
                    else:
                        id = stashedHTML2text(''.join(elem.itertext()), self.md)
                        id = slugify(id, sep)
                    elem.set('id', unique(id, self.IDs))
                if start_level:
                    level = int(elem.tag[-1]) + start_level
                    if level > 6:
                        level = 6
                    elem.tag = 'h%d' % level

    def _get_meta(self):
        """ Return meta data suported by this ext as a tuple """
        level = int(self.config['level']) - 1
        force = parseBoolValue(self.config['forceid'])
        if hasattr(self.md, 'Meta'):
            if 'header_level' in self.md.Meta:
                level = int(self.md.Meta['header_level'][0]) - 1
            if 'header_forceid' in self.md.Meta:
                force = parseBoolValue(self.md.Meta['header_forceid'][0])
        return level, force


class HeaderIdExtension(Extension):
    def __init__(self, *args, **kwargs):
        # set defaults
        self.config = {
            'level': ['1', 'Base level for headers.'],
            'forceid': ['True', 'Force all headers to have an id.'],
            'separator': ['-', 'Word separator.'],
            'slugify': [slugify, 'Callable to generate anchors']
        }

        super(HeaderIdExtension, self).__init__(*args, **kwargs)

        warnings.warn(
            'The HeaderId Extension is pending deprecation. Use the TOC Extension instead.',
            PendingDeprecationWarning
        )

    def extendMarkdown(self, md, md_globals):
        md.registerExtension(self)
        self.processor = HeaderIdTreeprocessor()
        self.processor.md = md
        self.processor.config = self.getConfigs()
        if 'attr_list' in md.treeprocessors.keys():
            # insert after attr_list treeprocessor
            md.treeprocessors.add('headerid', self.processor, '>attr_list')
        else:
            # insert after 'prettify' treeprocessor.
            md.treeprocessors.add('headerid', self.processor, '>prettify')

    def reset(self):
        self.processor.IDs = set()


def makeExtension(*args, **kwargs):
    return HeaderIdExtension(*args, **kwargs)

Filemanager

Name Type Size Permission Actions
__init__.py File 3.76 KB 0644
__init__.pyc File 4 KB 0644
abbr.py File 2.67 KB 0644
abbr.pyc File 4.14 KB 0644
admonition.py File 3.09 KB 0644
admonition.pyc File 3.66 KB 0644
attr_list.py File 6.12 KB 0644
attr_list.pyc File 6.21 KB 0644
codehilite.py File 9.54 KB 0644
codehilite.pyc File 9.3 KB 0644
def_list.py File 3.66 KB 0644
def_list.pyc File 4.31 KB 0644
extra.py File 5.42 KB 0644
extra.pyc File 5.57 KB 0644
fenced_code.py File 4.01 KB 0644
fenced_code.pyc File 4.45 KB 0644
footnotes.py File 14.57 KB 0644
footnotes.pyc File 14.79 KB 0644
headerid.py File 3.24 KB 0644
headerid.pyc File 4.23 KB 0644
meta.py File 2.34 KB 0644
meta.pyc File 2.95 KB 0644
nl2br.py File 859 B 0644
nl2br.pyc File 1.54 KB 0644
sane_lists.py File 1.56 KB 0644
sane_lists.pyc File 2.73 KB 0644
smart_strong.py File 1.17 KB 0644
smart_strong.pyc File 1.81 KB 0644
smarty.py File 10.12 KB 0644
smarty.pyc File 10.23 KB 0644
tables.py File 7.67 KB 0644
tables.pyc File 6.79 KB 0644
toc.py File 10.79 KB 0644
toc.pyc File 10.53 KB 0644
wikilinks.py File 2.8 KB 0644
wikilinks.pyc File 4.02 KB 0644