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"""
Meta Data Extension for Python-Markdown
=======================================

This extension adds Meta Data handling to markdown.

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

Original code Copyright 2007-2008 [Waylan Limberg](http://achinghead.com).

All changes Copyright 2008-2014 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 ..preprocessors import Preprocessor
import re
import logging

log = logging.getLogger('MARKDOWN')

# Global Vars
META_RE = re.compile(r'^[ ]{0,3}(?P<key>[A-Za-z0-9_-]+):\s*(?P<value>.*)')
META_MORE_RE = re.compile(r'^[ ]{4,}(?P<value>.*)')
BEGIN_RE = re.compile(r'^-{3}(\s.*)?')
END_RE = re.compile(r'^(-{3}|\.{3})(\s.*)?')


class MetaExtension (Extension):
    """ Meta-Data extension for Python-Markdown. """

    def extendMarkdown(self, md, md_globals):
        """ Add MetaPreprocessor to Markdown instance. """
        md.preprocessors.add("meta",
                             MetaPreprocessor(md),
                             ">normalize_whitespace")


class MetaPreprocessor(Preprocessor):
    """ Get Meta-Data. """

    def run(self, lines):
        """ Parse Meta-Data and store in Markdown.Meta. """
        meta = {}
        key = None
        if lines and BEGIN_RE.match(lines[0]):
            lines.pop(0)
        while lines:
            line = lines.pop(0)
            m1 = META_RE.match(line)
            if line.strip() == '' or END_RE.match(line):
                break  # blank line or end of YAML header - done
            if m1:
                key = m1.group('key').lower().strip()
                value = m1.group('value').strip()
                try:
                    meta[key].append(value)
                except KeyError:
                    meta[key] = [value]
            else:
                m2 = META_MORE_RE.match(line)
                if m2 and key:
                    # Add another line to existing key
                    meta[key].append(m2.group('value').strip())
                else:
                    lines.insert(0, line)
                    break  # no meta data - done
        self.markdown.Meta = meta
        return lines


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