# -*- coding: iso-8859-1 -*-
# Copyright (C) 2003-2006 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
XML utility functions.
"""

def xmlquote (s):
    """
    Quote characters for XML.
    """
    s = s.replace("&", "&")
    s = s.replace("<", "&lt;")
    s = s.replace(">", "&gt;")
    return s


def xmlquoteattr (s):
    """
    Quote XML attribute, ready for inclusion with double quotes.
    """
    s = s.replace("&", "&amp;")
    s = s.replace("<", "&lt;")
    s = s.replace(">", "&gt;")
    s = s.replace("\"", "&quot;")
    return s


def xmlunquote (s):
    """
    Unquote characters from XML.
    """
    s = s.replace("&lt;", "<")
    s = s.replace("&gt;", ">")
    s = s.replace("&amp;", "&")
    return s


def xmlunquoteattr (s):
    """
    Unquote attributes from XML.
    """
    s = s.replace("&lt;", "<")
    s = s.replace("&gt;", ">")
    s = s.replace("&quot;", "\"")
    s = s.replace("&amp;", "&")
    return s