Varia's website
https://varia.zone
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.
79 lines
2.3 KiB
79 lines
2.3 KiB
"""
|
|
Meta Data Extension for Python-Markdown
|
|
=======================================
|
|
|
|
This extension adds Meta Data handling to markdown.
|
|
|
|
See <https://Python-Markdown.github.io/extensions/meta_data>
|
|
for documentation.
|
|
|
|
Original code Copyright 2007-2008 [Waylan Limberg](http://achinghead.com).
|
|
|
|
All changes Copyright 2008-2014 The Python Markdown Project
|
|
|
|
License: [BSD](https://opensource.org/licenses/bsd-license.php)
|
|
|
|
"""
|
|
|
|
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):
|
|
""" Add MetaPreprocessor to Markdown instance. """
|
|
md.registerExtension(self)
|
|
self.md = md
|
|
md.preprocessors.register(MetaPreprocessor(md), 'meta', 27)
|
|
|
|
def reset(self):
|
|
self.md.Meta = {}
|
|
|
|
|
|
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.md.Meta = meta
|
|
return lines
|
|
|
|
|
|
def makeExtension(**kwargs): # pragma: no cover
|
|
return MetaExtension(**kwargs)
|
|
|