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# -*- coding: UTF-8 -*-
# Copyright (c) 2009 Ars Aperta, Itaapy, Pierlis, Talend.
# Authors: David Versmisse <>
# Hervé Cauwelier <>
# This file is part of Lpod (see:
# Lpod is free software; you can redistribute it and/or modify it under
# the terms of either:
# a) the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option)
# any later version.
# Lpod is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with Lpod. If not, see <>.
# b) the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Import from the Standard Library
from copy import deepcopy
from cStringIO import StringIO
# Import from lxml
from lxml.etree import parse, tostring
# Import from lpod
from element import _make_odf_element
class odf_xmlpart(object):
"""Representation of an XML part.
Abstraction of the XML library behind.
def __init__(self, part_name, container):
self.part_name = part_name
self.container = container
# Internal state
self.__tree = None
self.__root = None
def __get_tree(self):
if self.__tree is None:
container = self.container
part = container.get_part(self.part_name)
self.__tree = parse(StringIO(part))
return self.__tree
# Public API
def get_root(self):
if self.__root is None:
tree = self.__get_tree()
self.__root = _make_odf_element(tree.getroot())
return self.__root
def get_element_list(self, xpath_query):
root = self.get_root()
return root.xpath(xpath_query)
def get_element(self, xpath_query):
result = self.get_element_list(xpath_query)
if not result:
return None
return result[0]
def delete_element(self, child):
def clone(self):
clone = object.__new__(self.__class__)
for name in self.__dict__:
if name == 'container':
setattr(clone, name, self.container.clone())
elif name in ('_odf_xmlpart__tree',):
setattr(clone, name, None)
value = getattr(self, name)
value = deepcopy(value)
setattr(clone, name, value)
return clone
def serialize(self, pretty=False):
tree = self.__get_tree()
# Lxml declaration is too exotic to me
data = ('<?xml version="1.0" encoding="UTF-8"?>\n'
+ tostring(tree, encoding='UTF-8', pretty_print=pretty))
# Lxml with pretty_print is adding a empty line
if pretty:
data = data.strip()
return data
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