427d043f2c
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3567 fd906abe-77d9-0310-91a1-e0d9ade77398
63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
#
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# Copyright (c) 2009 Helmut Merz helmutm@cy55.de
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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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"""
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Strip HTML tags and other HTML-related utilities.
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$Id$
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"""
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from cybertools.text.lib.BeautifulSoup import BeautifulSoup, Comment
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#validTags = 'p i strong b u a h1 h2 h3 img pre br'.split()
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validTags = 'b br div em font h1 h2 h3 i p pre span strong table td tr u'.split()
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#validAttrs = 'href src'.split()
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validAttrs = 'class style'.split()
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validStyles = 'font-style font-weight'.split()
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def sanitize(value, validTags=validTags, validAttrs=validAttrs,
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validStyles=validStyles):
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soup = BeautifulSoup(value)
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for comment in soup.findAll(text=lambda text: isinstance(text, Comment)):
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comment.extract()
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for tag in soup.findAll(True):
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if tag.name not in validTags:
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tag.hidden = True
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attrs = []
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for attr, val in tag.attrs:
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if attr not in validAttrs:
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continue
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if attr == 'style':
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val = sanitizeStyle(val, validStyles)
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if val:
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attrs.append((attr, val))
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tag.attrs = attrs
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return soup.renderContents().decode('utf8')
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def sanitizeStyle(value, validStyles=validStyles):
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result = []
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for item in value.split(';'):
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if ':' in item:
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k, v = item.split(':')
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if k.strip() in validStyles:
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result.append(item.strip())
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return '; '.join(result)
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