2021-07-11 22:00:41 +02:00
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# -*- mode: python -*-
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# -*- coding: utf-8 -*-
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2020-09-26 16:19:37 +02:00
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2021-07-11 22:00:41 +02:00
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##############################################################################
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#
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# Gestion scolarite IUT
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#
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# Copyright (c) 1999 - 2021 Emmanuel Viennet. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Emmanuel Viennet emmanuel.viennet@viennet.net
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#
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##############################################################################
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from html.parser import HTMLParser
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"""HTML sanitizing function
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used to clean user submitted HTML
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(Python 3 only)
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"""
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# permet de conserver les liens
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2021-07-11 22:02:22 +02:00
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def html_to_safe_html(text, convert_br=True): # was HTML2SafeHTML
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# text = html_to_safe_html(text, valid_tags=("b", "a", "i", "br", "p"))
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2021-07-11 22:00:41 +02:00
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# New version (jul 2021) with our own parser
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text = convert_html_to_text(text)
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2020-09-26 16:19:37 +02:00
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if convert_br:
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return newline_to_br(text)
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else:
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return text
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2021-07-11 22:00:41 +02:00
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def convert_html_to_text(s):
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parser = HTMLSanitizer()
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parser.feed(s)
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return parser.text
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2020-09-26 16:19:37 +02:00
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def newline_to_br(text):
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return text.replace("\n", "<br/>")
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2021-07-11 22:00:41 +02:00
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class HTMLSanitizer(HTMLParser):
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def __init__(self, allowed_tags=("i", "b", "em", "br", "p"), **kwargs):
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super(HTMLSanitizer, self).__init__(**kwargs)
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self.allowed_tags = set(allowed_tags)
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self.text = ""
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def handle_starttag(self, tag, attrs):
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if tag in self.allowed_tags:
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self.text += "<{} {}>".format(
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tag, ", ".join(['{}="{}"'.format(k, v) for (k, v) in attrs])
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)
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def handle_endtag(self, tag):
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if tag in self.allowed_tags:
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self.text += "</" + tag + ">"
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def handle_data(self, data):
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self.text += data
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if __name__ == "__main__":
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test_parser = HTMLSanitizer()
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test_parser.feed("""<p>Hello world <b z="1" >gras</b> <i a="2">italique</i></p>""")
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print(test_parser.text)
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