Replace duplicate widget name in the glade file

Even in the release notes in Glade Interface Designer stated that duplicate widget name is not allowable in a glade project.
The duplicate widget names are still occur in the glade file.
Some times at the run time gtk builder raise an error about duplicate widget name.

I create a tool to replace a duplicate widget name with appending a postfix after original widget name.

'''
Copyright 2009 Mige Harimurti


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 3 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, see <http://www.gnu.org/licenses/>.


'''



import xml.parsers.expat
import sys


id_list = {}

xml_out = ''

# 3 handler functions

def start_element(name, attrs):
    #print 'Start element:', name, attrs
    global xml_out
    if 'id' in attrs:
            if attrs['id'] in id_list:
                #print '\t %s duplicate.' % attrs['id']
                id_list[attrs['id']]  += 1
                attrs['id'] = '%s%s' % (attrs['id'],id_list[attrs['id']])
            else:
                id_list[attrs['id']] = 1
    attribute_list = ""
    for k in attrs:
        attribute_list = '%s %s="%s"' % (attribute_list,k,attrs[k])
    
    xml_out = '%s<%s %s>' % (xml_out,name, attribute_list) 

def end_element(name):
    #print 'End element:', name
    global xml_out
    xml_out = '%s</%s>' % (xml_out,name)
    
    
def char_data(data):
    global xml_out
    xml_out = '%s%s' % (xml_out, data)


if __name__ == "__main__":
    xml_file = sys.argv[1]
    p = xml.parsers.expat.ParserCreate()
    
    p.returns_unicode = False
    p.StartElementHandler = start_element
    p.EndElementHandler = end_element
    p.CharacterDataHandler = char_data

    xfo = open(xml_file)
    
    xml_out = '<?xml version="1.0"?>\n'
    p.ParseFile(xfo)
    print xml_out

    #~ for k in id_list:
        #~ if id_list[k] > 1:
            #~ print "%s:%s" % (k,id_list[k])