calibre/src/calibre/utils/unsmarten.py

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# -*- coding: utf-8 -*-
from __future__ import (unicode_literals, division, absolute_import, print_function)
__license__ = 'GPL 3'
__copyright__ = '2011, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
import re
def unsmarten_text(txt):
txt = re.sub(u'&#8211;|&ndash;|', r'--', txt) # en-dash
txt = re.sub(u'&#8212;|&mdash;|—', r'---', txt) # em-dash
txt = re.sub(u'&#8230;|&hellip;|…', r'...', txt) # ellipsis
txt = re.sub(u'&#8220;|&#8221;|&#8243;|&ldquo;|&rdquo;|&Prime;|“|”|″', r'"', txt) # double quote
txt = re.sub(u'&#8216;|&#8217;|&#8242;|&lsquo;|&rsquo;|&prime;|||', r"'", txt) # single quote
return txt