
Perhaps no one has tried to use this tool in a long time? In any case, it wasn't working for me locally on Windows; this fixes it. Bug: none Change-Id: Iee762a62e7c1e4998c3dcc0fd6ca7d20ede664f5 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4114622 Auto-Submit: Peter Kasting <pkasting@chromium.org> Reviewed-by: Dirk Pranke <dpranke@google.com> Commit-Queue: Peter Kasting <pkasting@chromium.org> Cr-Commit-Position: refs/heads/main@{#1084509}
86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
# Copyright 2015 The Chromium Authors
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Implements Gitiles' notification, aside and promotion blocks.
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This extention makes the Markdown parser recognize the Gitiles' extended
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blocks notation. The syntax is explained at:
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https://gerrit.googlesource.com/gitiles/+/master/Documentation/markdown.md#Notification_aside_promotion-blocks
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"""
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from markdown.blockprocessors import BlockProcessor
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from markdown.extensions import Extension
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import re
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import xml.etree.ElementTree as etree
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class _GitilesExtBlockProcessor(BlockProcessor):
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"""Process Gitiles' notification, aside and promotion blocks."""
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RE_START = re.compile(r'^\*\*\* (note|aside|promo) *\n')
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RE_END = re.compile(r'\n\*\*\* *\n?$')
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def __init__(self, *args, **kwargs):
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self._last_parent = None
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BlockProcessor.__init__(self, *args, **kwargs)
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def test(self, parent, block):
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return self.RE_START.search(block) or self.RE_END.search(block)
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def run(self, parent, blocks):
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raw_block = blocks.pop(0)
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match_start = self.RE_START.search(raw_block)
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if match_start:
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# Opening a new block.
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rest = raw_block[match_start.end():]
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if self._last_parent:
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# Inconsistent state (nested starting markers). Ignore the marker
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# and keep going.
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blocks.insert(0, rest)
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return
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div = etree.SubElement(parent, 'div')
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# Setting the class name is sufficient, because doc.css already has
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# styles for these classes.
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div.set('class', match_start.group(1))
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self._last_parent = parent
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blocks.insert(0, rest)
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self.parser.parseBlocks(div, blocks)
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return
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match_end = self.RE_END.search(raw_block)
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if match_end:
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# Ending an existing block.
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# Process the text preceding the ending marker in the current context
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# (i.e. within the div block).
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rest = raw_block[:match_end.start()]
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self.parser.parseBlocks(parent, [rest])
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if not self._last_parent:
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# Inconsistent state (the ending marker is found but there is no
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# matching starting marker).
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# Let's continue as if we did not see the ending marker.
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return
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last_parent = self._last_parent
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self._last_parent = None
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self.parser.parseBlocks(last_parent, blocks)
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return
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class _GitilesExtBlockExtension(Extension):
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"""Add Gitiles' extended blocks to Markdown, with a priority higher than the
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highest builtin."""
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def extendMarkdown(self, md):
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md.parser.blockprocessors.register(_GitilesExtBlockProcessor(md.parser),
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'gitilesextblocks', 101)
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def makeExtension(*args, **kwargs):
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return _GitilesExtBlockExtension(*args, **kwargs)
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