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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.
"""
NL2BR Extension
===============
A Python-Markdown extension to treat newlines as hard breaks; like
GitHub-flavored Markdown does.
Usage:
>>> import markdown
>>> print markdown.markdown('line 1\\nline 2', extensions=['nl2br'])
<p>line 1<br />
line 2</p>
Copyright 2011 [Brian Neal](http://deathofagremmie.com/)
Dependencies:
* [Python 2.4+](http://python.org)
* [Markdown 2.1+](http://packages.python.org/Markdown/)
"""
from __future__ import absolute_import
from __future__ import unicode_literals
from . import Extension
from ..inlinepatterns import SubstituteTagPattern
BR_RE = r'\n'
class Nl2BrExtension(Extension):
def extendMarkdown(self, md, md_globals):
br_tag = SubstituteTagPattern(BR_RE, 'br')
md.inlinePatterns.add('nl', br_tag, '_end')
def makeExtension(configs=None):
return Nl2BrExtension(configs)
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