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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 (AutolinkInlineProcessor, 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.inlinePatterns.add('gitilesautolink',
- AutolinkInlineProcessor(AUTOLINK_RE, md), '<autolink')
- def makeExtension(*args, **kwargs):
- return _GitilesSmartQuotesExtension(*args, **kwargs)
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