You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
2 months ago
|
# WikiLinks Extension for Python-Markdown
|
||
|
|
# ======================================
|
||
|
|
|
||
|
|
# Converts [[WikiLinks]] to relative links.
|
||
|
|
|
||
|
|
# See https://Python-Markdown.github.io/extensions/wikilinks
|
||
|
|
# for documentation.
|
||
|
|
|
||
|
|
# Original code Copyright [Waylan Limberg](http://achinghead.com/).
|
||
|
|
|
||
|
|
# All changes Copyright The Python Markdown Project
|
||
|
|
|
||
|
|
# License: [BSD](https://opensource.org/licenses/bsd-license.php)
|
||
|
|
|
||
|
|
"""
|
||
|
|
Converts `[[WikiLinks]]` to relative links.
|
||
|
|
|
||
|
|
See the [documentation](https://Python-Markdown.github.io/extensions/wikilinks)
|
||
|
|
for details.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from __future__ import annotations
|
||
|
|
|
||
|
|
from . import Extension
|
||
|
|
from ..inlinepatterns import InlineProcessor
|
||
|
|
import xml.etree.ElementTree as etree
|
||
|
|
import re
|
||
|
|
from typing import Any
|
||
|
|
|
||
|
|
|
||
|
|
def build_url(label: str, base: str, end: str) -> str:
|
||
|
|
""" Build a URL from the label, a base, and an end. """
|
||
|
|
clean_label = re.sub(r'([ ]+_)|(_[ ]+)|([ ]+)', '_', label)
|
||
|
|
return '{}{}{}'.format(base, clean_label, end)
|
||
|
|
|
||
|
|
|
||
|
|
class WikiLinkExtension(Extension):
|
||
|
|
""" Add inline processor to Markdown. """
|
||
|
|
|
||
|
|
def __init__(self, **kwargs):
|
||
|
|
self.config = {
|
||
|
|
'base_url': ['/', 'String to append to beginning or URL.'],
|
||
|
|
'end_url': ['/', 'String to append to end of URL.'],
|
||
|
|
'html_class': ['wikilink', 'CSS hook. Leave blank for none.'],
|
||
|
|
'build_url': [build_url, 'Callable formats URL from label.'],
|
||
|
|
}
|
||
|
|
""" Default configuration options. """
|
||
|
|
super().__init__(**kwargs)
|
||
|
|
|
||
|
|
def extendMarkdown(self, md):
|
||
|
|
self.md = md
|
||
|
|
|
||
|
|
# append to end of inline patterns
|
||
|
|
WIKILINK_RE = r'\[\[([\w0-9_ -]+)\]\]'
|
||
|
|
wikilinkPattern = WikiLinksInlineProcessor(WIKILINK_RE, self.getConfigs())
|
||
|
|
wikilinkPattern.md = md
|
||
|
|
md.inlinePatterns.register(wikilinkPattern, 'wikilink', 75)
|
||
|
|
|
||
|
|
|
||
|
|
class WikiLinksInlineProcessor(InlineProcessor):
|
||
|
|
""" Build link from `wikilink`. """
|
||
|
|
|
||
|
|
def __init__(self, pattern: str, config: dict[str, Any]):
|
||
|
|
super().__init__(pattern)
|
||
|
|
self.config = config
|
||
|
|
|
||
|
|
def handleMatch(self, m: re.Match[str], data: str) -> tuple[etree.Element | str, int, int]:
|
||
|
|
if m.group(1).strip():
|
||
|
|
base_url, end_url, html_class = self._getMeta()
|
||
|
|
label = m.group(1).strip()
|
||
|
|
url = self.config['build_url'](label, base_url, end_url)
|
||
|
|
a = etree.Element('a')
|
||
|
|
a.text = label
|
||
|
|
a.set('href', url)
|
||
|
|
if html_class:
|
||
|
|
a.set('class', html_class)
|
||
|
|
else:
|
||
|
|
a = ''
|
||
|
|
return a, m.start(0), m.end(0)
|
||
|
|
|
||
|
|
def _getMeta(self) -> tuple[str, str, str]:
|
||
|
|
""" Return meta data or `config` data. """
|
||
|
|
base_url = self.config['base_url']
|
||
|
|
end_url = self.config['end_url']
|
||
|
|
html_class = self.config['html_class']
|
||
|
|
if hasattr(self.md, 'Meta'):
|
||
|
|
if 'wiki_base_url' in self.md.Meta:
|
||
|
|
base_url = self.md.Meta['wiki_base_url'][0]
|
||
|
|
if 'wiki_end_url' in self.md.Meta:
|
||
|
|
end_url = self.md.Meta['wiki_end_url'][0]
|
||
|
|
if 'wiki_html_class' in self.md.Meta:
|
||
|
|
html_class = self.md.Meta['wiki_html_class'][0]
|
||
|
|
return base_url, end_url, html_class
|
||
|
|
|
||
|
|
|
||
|
|
def makeExtension(**kwargs): # pragma: no cover
|
||
|
|
return WikiLinkExtension(**kwargs)
|