def obj_from_node(node, paranoia=1):
"""Given a <PyObject> node, return an object of that type.
__init__ is NOT called on the new object, since the caller may want
to do some additional work first.
"""
classname = node.getAttribute('class')
# allow <PyObject> nodes w/out module name
# (possibly handwritten XML, XML containing "from-air" classes,
# or classes placed in the CLASS_STORE)
try:
modname = node.getAttribute('module')
except:
modname = None # must exist in xml_pickle namespace, or thin-air
return obj_from_name(classname, modname, paranoia)
def obj_from_node(node, paranoia=1):
"""Given a <PyObject> node, return an object of that type.
__init__ is NOT called on the new object, since the caller may want
to do some additional work first.
"""
classname = node.getAttribute('class')
# allow <PyObject> nodes w/out module name
# (possibly handwritten XML, XML containing "from-air" classes,
# or classes placed in the CLASS_STORE)
try:
modname = node.getAttribute('module')
except:
modname = None # must exist in xml_pickle namespace, or thin-air
return obj_from_name(classname, modname, paranoia)
def olddata_to_newdata(data, extra, paranoia):
"""Given raw data, the extra= tag, and paranoia setting,
recreate the object that was passed to newdata_to_olddata."""
(module, klass) = extra.split()
o = obj_from_name(klass, module, paranoia)
#if isinstance(o,ComplexType) and \
# type(data) in [StringType,UnicodeType]:
# # yuck ... have to strip () from complex data before
# # passing to __init__ (ran into this also in one of the
# # parsers ... maybe the () shouldn't be in the XML at all?)
# if data[0] == '(' and data[-1] == ')':
# data = data[1:-1]
if isinstance_any(o,(IntType,FloatType,ComplexType,LongType)) and \
type(data) in [StringType,UnicodeType]:
data = aton(data)
o = setCoreData(o, data)
return o
def olddata_to_newdata(data,extra,paranoia):
"""Given raw data, the extra= tag, and paranoia setting,
recreate the object that was passed to newdata_to_olddata."""
(module,klass) = extra.split()
o = obj_from_name(klass,module,paranoia)
#if isinstance(o,ComplexType) and \
# type(data) in [StringType,UnicodeType]:
# # yuck ... have to strip () from complex data before
# # passing to __init__ (ran into this also in one of the
# # parsers ... maybe the () shouldn't be in the XML at all?)
# if data[0] == '(' and data[-1] == ')':
# data = data[1:-1]
if isinstance_any(o,(IntType,FloatType,ComplexType,LongType)) and \
type(data) in [StringType,UnicodeType]:
data = aton(data)
o = setCoreData(o,data)
return o
def startElement(self, name, attrs):
dbg("** START ELEM %s,%s" % (name, attrs._attrs))
# push on elem_stk as tuple:
# (name,family,type,attr_name,attrs,[container]?)
# name = attr/item/key/val/etc.
# family = normalized family name
# type = list/dict/string/etc.
# attr_name = attribute name=, or none
# attrs = dict of all tag attributes
# container = for container types, the empty container to
# be filled
node_type = attrs._attrs.get('type')
# determine object family
family = attrs._attrs.get('family')
if node_type is None and name == 'PyObject':
# <PyObject> doesn't have a "type=" if not mutated
family = 'obj'
elif name == 'entry':
# entries don't need family=
family = ''
else:
family = _dom._fix_family(family, node_type)
if not attrs._attrs.get('refid'):
# we don't set a container for <entry> -- also see below
if family == 'seq':
container = []
elif family == 'map':
container = {}
elif family == 'obj' or name == 'PyObject':
container = obj_from_name(attrs._attrs.get('class'),
attrs._attrs.get('module', None),
self.paranoia)
else:
container = None
else: # don't want container for refs
container = None
elem = (name, family, node_type, attrs._attrs.get('name'),
attrs._attrs, container)
if container is not None:
# have to save ref to container before we start grabbing subitems,
# in case the subitems reference the container.
self.save_obj_id(container, elem)
self.elem_stk.append(elem)
# for each "container" type, we place a STOP token
# on the val_stk we'll know exactly where the elements
# begin and end -- maybe there's a way to avoid this,
# but this keeps things simple (otherwise, given for example
# (1,(2,3,4),(5,6)), you get a string of <items> and
# it's hard to tell which belongs where)
#
# (don't need a STOP token for <entry>, since it always
# holds a single key/value pair)
if container is not None:
if not attrs._attrs.get('refid'):
self.val_stk.append(("STOP", ))
# reset content
self.content = ''
self.prstk()
def startElement(self,name,attrs):
dbg("** START ELEM %s,%s"%(name,attrs._attrs))
# push on elem_stk as tuple:
# (name,family,type,attr_name,attrs,[container]?)
# name = attr/item/key/val/etc.
# family = normalized family name
# type = list/dict/string/etc.
# attr_name = attribute name=, or none
# attrs = dict of all tag attributes
# container = for container types, the empty container to
# be filled
node_type = attrs._attrs.get('type')
# determine object family
family = attrs._attrs.get('family')
if node_type is None and name == 'PyObject':
# <PyObject> doesn't have a "type=" if not mutated
family = 'obj'
elif name == 'entry':
# entries don't need family=
family = ''
else:
family = _dom._fix_family(family,node_type)
if not attrs._attrs.get('refid'):
# we don't set a container for <entry> -- also see below
if family == 'seq':
container = []
elif family == 'map':
container = {}
elif family == 'obj' or name == 'PyObject':
container = obj_from_name(attrs._attrs.get('class'),
attrs._attrs.get('module',None),
self.paranoia)
else:
container = None
else: # don't want container for refs
container = None
elem = (name, family, node_type, attrs._attrs.get('name'),
attrs._attrs, container)
if container is not None:
# have to save ref to container before we start grabbing subitems,
# in case the subitems reference the container.
self.save_obj_id(container,elem)
self.elem_stk.append(elem)
# for each "container" type, we place a STOP token
# on the val_stk we'll know exactly where the elements
# begin and end -- maybe there's a way to avoid this,
# but this keeps things simple (otherwise, given for example
# (1,(2,3,4),(5,6)), you get a string of <items> and
# it's hard to tell which belongs where)
#
# (don't need a STOP token for <entry>, since it always
# holds a single key/value pair)
if container is not None:
if not attrs._attrs.get('refid'):
self.val_stk.append(("STOP",))
# reset content
self.content = ''
self.prstk()
