102 lines
3.1 KiB
Python
102 lines
3.1 KiB
Python
# Society Self-Service
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# Copyright © 2018-2020 Yingtong Li (RunasSudo)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# Adapted from:
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# Copyright (c) 2014 Rowan Nairn. All rights reserved. Licensed under the 2-clause BSD licence
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# https://github.com/r0wb0t/markdown-urlize
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"""A more liberal autolinker
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Inspired by Django's urlize function.
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Positive examples:
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>>> import markdown
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>>> md = markdown.Markdown(extensions=['urlize'])
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>>> md.convert('http://example.com/')
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u'<p><a href="http://example.com/">http://example.com/</a></p>'
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>>> md.convert('go to http://example.com')
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u'<p>go to <a href="http://example.com">http://example.com</a></p>'
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>>> md.convert('example.com')
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u'<p><a href="http://example.com">example.com</a></p>'
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>>> md.convert('example.net')
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u'<p><a href="http://example.net">example.net</a></p>'
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>>> md.convert('www.example.us')
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u'<p><a href="http://www.example.us">www.example.us</a></p>'
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>>> md.convert('(www.example.us/path/?name=val)')
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u'<p>(<a href="http://www.example.us/path/?name=val">www.example.us/path/?name=val</a>)</p>'
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>>> md.convert('go to <http://example.com> now!')
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u'<p>go to <a href="http://example.com">http://example.com</a> now!</p>'
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Negative examples:
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>>> md.convert('del.icio.us')
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u'<p>del.icio.us</p>'
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"""
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import markdown
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# Global Vars
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URLIZE_RE = '(%s)' % '|'.join([
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r'<(?:f|ht)tps?://[^>]*>',
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r'\b(?:f|ht)tps?://[^)<>\s]+[^.,)<>\s]',
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r'\bwww\.[^)<>\s]+[^.,)<>\s]',
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r'[^(<\s]+\.(?:(?:com|net|org)(?:\.au)?)\b',
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])
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class UrlizePattern(markdown.inlinepatterns.Pattern):
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""" Return a link Element given an autolink (`http://example/com`). """
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def handleMatch(self, m):
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url = m.group(2)
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if url.startswith('<'):
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url = url[1:-1]
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text = url
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if not url.split('://')[0] in ('http','https','ftp'):
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if '@' in url and not '/' in url:
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url = 'mailto:' + url
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else:
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url = 'http://' + url
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el = markdown.util.etree.Element("a")
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el.set('href', url)
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el.text = markdown.util.AtomicString(text)
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return el
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class UrlizeExtension(markdown.Extension):
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""" Urlize Extension for Python-Markdown. """
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def extendMarkdown(self, md, md_globals):
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""" Replace autolink with UrlizePattern """
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md.inlinePatterns['autolink'] = UrlizePattern(URLIZE_RE, md)
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def makeExtension(*args, **kwargs):
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return UrlizeExtension(*args, **kwargs)
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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