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""" Provides functions for converting DOM tree or xml file in order to process
it with xmldiff functions. """
# Copyright (c) 2001 LOGILAB S.A. (Paris, FRANCE).
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# 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.
__revision__ = '$Id: input.py,v 1.14 2003/09/27 14:46:29 nico Exp $'
def tree_from_stream(stream,
norm_sp=1, ext_ges=0, ext_pes=0, include_comment=1,
encoding='UTF-8', html=0):
"""
create internal tree from xml stream (open file or IOString)
if norm_sp = 1, normalize space and new line
"""
from xml.sax import make_parser, SAXNotRecognizedException
from xml.sax.handler import feature_namespaces, feature_external_ges, \
feature_external_pes, property_lexical_handler
from logilab.xmldiff.parser import SaxHandler
handler = SaxHandler(norm_sp, include_comment, encoding)
if html:
parser = make_parser(["xml.sax.drivers2.drv_sgmlop_html"])
else:
parser = make_parser()
# do not perform Namespace processing
parser.setFeature(feature_namespaces, 0)
# do not include any external entities
try:
parser.setFeature(feature_external_ges, ext_ges)
#xml.sax._exceptions.
except SAXNotRecognizedException:
print 'Unable to set feature external ges'
try:
parser.setFeature(feature_external_pes, ext_pes)
#xml.sax._exceptions.
except SAXNotRecognizedException:
print 'Unable to set feature external pes'
# add lexical handler for comments, entities, dtd and cdata
parser.setProperty(property_lexical_handler, handler)
parser.setContentHandler(handler)
parser.parse(stream)
return handler.get_tree()
def tree_from_dom(root, ezs=0):
""" create internal tree from DOM subtree """
from xml.dom.ext.Dom2Sax import Dom2SaxParser
from xml.sax.handler import feature_namespaces, property_lexical_handler
#from parser import DomParser
parser = Dom2SaxParser()
from logilab.xmldiff.parser import SaxHandler
handler = SaxHandler(normalize_space=0, include_comment=1)
# do not perform Namespace processing
parser.setFeature(feature_namespaces, 0)
# add lexical handler for comments, entities, dtd and cdata
parser.setProperty(property_lexical_handler, handler)
parser.setContentHandler(handler)
parser.parse(root)
return handler.get_tree()
if __name__ == '__main__':
from xml.dom.ext import StripXml, PrettyPrint
from xml.dom.ext.reader.Sax2 import Reader
import sys
reader = Reader()
file = open(sys.argv[1],'r')
fragment = reader.fromStream(file)
d = StripXml(fragment)
file.close()
tree = tree_from_dom(d)
file = open(sys.argv[2],'r')
fragment = reader.fromStream(file)
d = StripXml(fragment)
file.close()
tree2 = tree_from_dom(d)
from logilab.xmldiff.objects import repr
print 'Source tree', repr(tree)
print 'Destination tree', repr(tree2)
#from ezs import EzsCorrector
#strategy = EzsCorrector()
from logilab.xmldiff.fmes import FmesCorrector
strategy = FmesCorrector(0.59, 0.5)
#from ezs import process
actions = strategy.process_trees(tree, tree2)
from logilab.xmldiff.format import xupdate_dom
PrettyPrint(
xupdate_dom(
reader.fromString('<root/>'),
actions))
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