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#! /usr/bin/env python
# -*- coding: UTF-8 -*-
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""XML externalization support."""
# "XML is like violence: if it doesn't solve your problem, you aren't
# using enough of it." -- various
__copyright__ = "Copyright (C) 2005 Canonical Ltd."
__author__ = "Martin Pool <mbp@canonical.com>"
_ElementTree = None
def ElementTree(*args, **kwargs):
global _ElementTree
if _ElementTree is None:
try:
from cElementTree import ElementTree
except ImportError:
from elementtree.ElementTree import ElementTree
_ElementTree = ElementTree
return _ElementTree(*args, **kwargs)
_Element = None
def Element(*args, **kwargs):
global _Element
if _Element is None:
try:
from cElementTree import Element
except ImportError:
from elementtree.ElementTree import Element
_Element = Element
return _Element(*args, **kwargs)
_SubElement = None
def SubElement(*args, **kwargs):
global _SubElement
if _SubElement is None:
try:
from cElementTree import SubElement
except ImportError:
from elementtree.ElementTree import SubElement
_SubElement = SubElement
return _SubElement(*args, **kwargs)
import os, time
from trace import mutter
class XMLMixin:
def to_element(self):
raise Exception("XMLMixin.to_element must be overridden in concrete classes")
def write_xml(self, f):
ElementTree(self.to_element()).write(f, 'utf-8')
f.write('\n')
def read_xml(cls, f):
return cls.from_element(ElementTree().parse(f))
read_xml = classmethod(read_xml)
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