Docserver: Support markdown for HTML content. Request thirdparty submission review.

R=kalman@chromium.org
BUG=293681

Review URL: https://codereview.chromium.org/133433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244490 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 86 insertions, 0 deletions

diff --git a/third_party/markdown/extensions/extra.py b/third_party/markdown/extensions/extra.py
new file mode 100644
index 0000000..b368551
--- /dev/null
+++ b/third_party/markdown/extensions/extra.py
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+# markdown is released under the BSD license
+# Copyright 2007, 2008 The Python Markdown Project (v. 1.7 and later)
+# Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
+# Copyright 2004 Manfred Stienstra (the original version)
+# 
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# 
+# *   Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# *   Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+# *   Neither the name of the <organization> nor the
+#     names of its contributors may be used to endorse or promote products
+#     derived from this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE PYTHON MARKDOWN PROJECT ''AS IS'' AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTORS TO THE PYTHON MARKDOWN PROJECT
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+
+"""
+Python-Markdown Extra Extension
+===============================
+
+A compilation of various Python-Markdown extensions that imitates
+[PHP Markdown Extra](http://michelf.com/projects/php-markdown/extra/).
+
+Note that each of the individual extensions still need to be available
+on your PYTHONPATH. This extension simply wraps them all up as a 
+convenience so that only one extension needs to be listed when
+initiating Markdown. See the documentation for each individual
+extension for specifics about that extension.
+
+In the event that one or more of the supported extensions are not 
+available for import, Markdown will issue a warning and simply continue 
+without that extension. 
+
+There may be additional extensions that are distributed with 
+Python-Markdown that are not included here in Extra. Those extensions
+are not part of PHP Markdown Extra, and therefore, not part of
+Python-Markdown Extra. If you really would like Extra to include
+additional extensions, we suggest creating your own clone of Extra
+under a differant name. You could also edit the `extensions` global 
+variable defined below, but be aware that such changes may be lost 
+when you upgrade to any future version of Python-Markdown.
+
+"""
+
+from __future__ import absolute_import
+from __future__ import unicode_literals
+from . import Extension
+
+extensions = ['smart_strong',
+              'fenced_code',
+              'footnotes',
+              'attr_list',
+              'def_list',
+              'tables',
+              'abbr',
+              ]
+              
+
+class ExtraExtension(Extension):
+    """ Add various extensions to Markdown class."""
+
+    def extendMarkdown(self, md, md_globals):
+        """ Register extension instances. """
+        md.registerExtensions(extensions, self.config)
+        if not md.safeMode:
+            # Turn on processing of markdown text within raw html
+            md.preprocessors['html_block'].markdown_in_raw = True
+
+def makeExtension(configs={}):
+    return ExtraExtension(configs=dict(configs))