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# Copyright 2017 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Implements Gitiles' simpler auto linking.
This extention auto links basic URLs that aren't bracketed by <...>.
https://gerrit.googlesource.com/gitiles/+/master/java/com/google/gitiles/Linkifier.java
"""
from markdown.inlinepatterns import (AutolinkPattern, Pattern)
from markdown.extensions import Extension
# Best effort attempt to match URLs without matching past the end of the URL.
# The first "[]" is copied from Linkifier.java (safe, reserved, and unsafe
# characters). The second "[]" is similar to the first, but with English
# punctuation removed, since the gitiles parser treats these as punction in the
# sentence, rather than the final character of the URL.
AUTOLINK_RE = (r'(https?://[a-zA-Z0-9$_.+!*\',%;:@=?#/~<>-]+'
r'[a-zA-Z0-9$_+*\'%@=#/~<-])')
class _GitilesSmartQuotesExtension(Extension):
"""Add Gitiles' simpler linkifier to Markdown."""
def extendMarkdown(self, md, md_globals):
md.inlinePatterns.add('gitilesautolink',
AutolinkPattern(AUTOLINK_RE, md),
'<autolink')
def makeExtension(*args, **kwargs):
return _GitilesSmartQuotesExtension(*args, **kwargs)
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