You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
4.0 KiB
124 lines
4.0 KiB
8 months ago
|
# -*- coding: utf8 -*-
|
||
|
|
#
|
||
|
|
# Copyright (c) 2006-2019 Andrey Golovigin
|
||
|
|
# Copyright (c) 2014 Jorrit Wronski
|
||
|
|
#
|
||
|
|
# Permission is hereby granted, free of charge, to any person obtaining
|
||
|
|
# a copy of this software and associated documentation files (the
|
||
|
|
# "Software"), to deal in the Software without restriction, including
|
||
|
|
# without limitation the rights to use, copy, modify, merge, publish,
|
||
|
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
||
|
|
# permit persons to whom the Software is furnished to do so, subject to
|
||
|
|
# the following conditions:
|
||
|
|
#
|
||
|
|
# The above copyright notice and this permission notice shall be
|
||
|
|
# included in all copies or substantial portions of the Software.
|
||
|
|
#
|
||
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||
|
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||
|
|
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||
|
|
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||
|
|
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||
|
|
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||
|
|
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
|
||
|
|
|
||
|
|
r"""
|
||
|
|
Markdown output backend.
|
||
|
|
|
||
|
|
>>> from pybtex.richtext import Tag, HRef
|
||
|
|
>>> markdown = Backend()
|
||
|
|
>>> print(Tag('em', '').render(markdown))
|
||
|
|
<BLANKLINE>
|
||
|
|
>>> print(Tag('em', 'Non-', 'empty').render(markdown))
|
||
|
|
*Non\-empty*
|
||
|
|
>>> print(HRef('/', '').render(markdown))
|
||
|
|
<BLANKLINE>
|
||
|
|
>>> print(HRef('/', 'Non-', 'empty').render(markdown))
|
||
|
|
[Non\-empty](/)
|
||
|
|
"""
|
||
|
|
from __future__ import unicode_literals
|
||
|
|
|
||
|
|
from xml.sax.saxutils import escape
|
||
|
|
|
||
|
|
from pybtex.backends import BaseBackend
|
||
|
|
|
||
|
|
SPECIAL_CHARS = [
|
||
|
|
u'\\', # backslash
|
||
|
|
u'`', # backtick
|
||
|
|
u'*', # asterisk
|
||
|
|
u'_', # underscore
|
||
|
|
u'{', # curly braces
|
||
|
|
u'}', # curly braces
|
||
|
|
u'[', # square brackets
|
||
|
|
u']', # square brackets
|
||
|
|
u'(', # parentheses
|
||
|
|
u')', # parentheses
|
||
|
|
u'#', # hash mark
|
||
|
|
u'+', # plus sign
|
||
|
|
u'-', # minus sign (hyphen)
|
||
|
|
u'.', # dot
|
||
|
|
u'!', # exclamation mark
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
class Backend(BaseBackend):
|
||
|
|
u""" A backend to support markdown output. It implements the same
|
||
|
|
features as the HTML backend.
|
||
|
|
|
||
|
|
In addition to that, you can use the keyword php_extra=True to enable
|
||
|
|
the definition list extension of php-markdown. The default is not to use
|
||
|
|
it, since we cannot be sure that this feature is implemented on all
|
||
|
|
systems.
|
||
|
|
|
||
|
|
More information:
|
||
|
|
http://www.michelf.com/projects/php-markdown/extra/#def-list
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, encoding=None, php_extra=False):
|
||
|
|
super(Backend, self).__init__(encoding=encoding)
|
||
|
|
self.php_extra = php_extra
|
||
|
|
|
||
|
|
default_suffix = '.md'
|
||
|
|
symbols = {
|
||
|
|
'ndash': u'–',# or 'ndash': u'–',
|
||
|
|
'newblock': u'\n',
|
||
|
|
'nbsp': u' '
|
||
|
|
}
|
||
|
|
tags = {
|
||
|
|
'em' : u'*', # emphasize text
|
||
|
|
'strong': u'**', # emphasize text even more
|
||
|
|
'i' : u'*', # italicize text: be careful, i is not semantic
|
||
|
|
'b' : u'**', # embolden text: be careful, b is not semantic
|
||
|
|
'tt' : u'`', # make text appear as code (typically typewriter text), a little hacky
|
||
|
|
}
|
||
|
|
|
||
|
|
def format_str(self, text):
|
||
|
|
"""Format the given string *str_*.
|
||
|
|
Escapes special markdown control characters.
|
||
|
|
"""
|
||
|
|
text = escape(text)
|
||
|
|
for special_char in SPECIAL_CHARS:
|
||
|
|
text = text.replace(special_char, u'\\' + special_char)
|
||
|
|
return text
|
||
|
|
|
||
|
|
def format_tag(self, tag_name, text):
|
||
|
|
tag = self.tags.get(tag_name)
|
||
|
|
if tag is None:
|
||
|
|
return text
|
||
|
|
else:
|
||
|
|
return r'{0}{1}{0}'.format(tag, text) if text else u''
|
||
|
|
|
||
|
|
def format_href(self, url, text):
|
||
|
|
return r'[%s](%s)' % (text, url) if text else u''
|
||
|
|
|
||
|
|
def write_entry(self, key, label, text):
|
||
|
|
# Support http://www.michelf.com/projects/php-markdown/extra/#def-list
|
||
|
|
if self.php_extra:
|
||
|
|
self.output(u'%s\n' % label)
|
||
|
|
self.output(u': %s\n\n' % text)
|
||
|
|
else:
|
||
|
|
self.output(u'[%s] ' % label)
|
||
|
|
self.output(u'%s \n' % text)
|