52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
# 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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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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r'doi: *(?:[^ ]+)'
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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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elif url.startswith('doi:'):
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url = 'https://doi-org.ezproxy.lib.monash.edu.au/' + url[4:].strip()
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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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