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Viewing changes to bzrlib/xml_serializer.py

  • Committer: Alexander Belchenko
  • Date: 2006-07-31 16:12:57 UTC
  • mto: (1711.2.111 jam-integration)
  • mto: This revision was merged to the branch mainline in revision 1906.
  • Revision ID: bialix@ukr.net-20060731161257-91a231523255332c
new official bzr.ico

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bzrlib/xml_serializer.py
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# Copyright (C) 2005, 2006 Canonical Ltd
 
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# -*- coding: UTF-8 -*-
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# importing this module is fairly slow because it has to load several
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# ElementTree bits
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from bzrlib import registry
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from bzrlib.trace import mutter, warning
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try:
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    try:
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        # it's in this package in python2.5
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        from xml.etree.cElementTree import (ElementTree, SubElement, Element,
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            XMLTreeBuilder, fromstring, tostring)
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        import xml.etree as elementtree
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    except ImportError:
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        from cElementTree import (ElementTree, SubElement, Element,
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                                  XMLTreeBuilder, fromstring, tostring)
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        import elementtree
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    ParseError = SyntaxError
 
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    from cElementTree import (ElementTree, SubElement, Element,
 
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                              XMLTreeBuilder, fromstring, tostring)
 
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    import elementtree
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except ImportError:
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    mutter('WARNING: using slower ElementTree; consider installing cElementTree'
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           " and make sure it's on your PYTHONPATH")
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    # this copy is shipped with bzr
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    from util.elementtree.ElementTree import (ElementTree, SubElement,
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                                              Element, XMLTreeBuilder,
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                                              fromstring, tostring)
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    import util.elementtree as elementtree
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    from xml.parsers.expat import ExpatError as ParseError
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from bzrlib import errors
 
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from bzrlib.errors import BzrError
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class Serializer(object):
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        return tostring(self._pack_inventory(inv)) + '\n'
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    def read_inventory_from_string(self, xml_string):
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        try:
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            return self._unpack_inventory(fromstring(xml_string))
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        except ParseError, e:
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            raise errors.UnexpectedInventoryFormat(e)
 
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        return self._unpack_inventory(fromstring(xml_string))
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    def read_inventory(self, f):
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        try:
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            return self._unpack_inventory(self._read_element(f))
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        except ParseError, e:
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            raise errors.UnexpectedInventoryFormat(e)
 
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        return self._unpack_inventory(self._read_element(f))
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    def write_revision(self, rev, f):
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        self._write_element(self._pack_revision(rev), f)
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        elementtree.ElementTree._raise_serialization_error(text)
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elementtree.ElementTree._escape_cdata = _escape_cdata
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class SerializerRegistry(registry.Registry):
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    """Registry for serializer objects"""
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format_registry = SerializerRegistry()
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format_registry.register_lazy('4', 'bzrlib.xml4', 'serializer_v4')
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format_registry.register_lazy('5', 'bzrlib.xml5', 'serializer_v5')
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format_registry.register_lazy('6', 'bzrlib.xml6', 'serializer_v6')
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format_registry.register_lazy('7', 'bzrlib.xml7', 'serializer_v7')