def traverseName(self, request, ob, name):
nm = name # the name to look up the object with
if name and name[:1] in '@+':
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
ob2 = namespaceLookup(ns, nm, ob, request)
except TraversalError:
raise NotFound(ob, name)
return ProxyFactory(ob2)
if nm == '.':
return ob
if IPublishTraverse.providedBy(ob):
ob2 = ob.publishTraverse(request, nm)
else:
# self is marker
adapter = zapi.queryMultiAdapter((ob, request), IPublishTraverse,
default=self)
if adapter is not self:
ob2 = adapter.publishTraverse(request, nm)
else:
raise NotFound(ob, name, request)
return ProxyFactory(ob2)
def traversePathElement(obj, name, further_path, default=_marker, traversable=None, request=None):
"""Traverse a single step 'name' relative to the given object.
'name' must be a string. '.' and '..' are treated specially, as well as
names starting with '@' or '+'. Otherwise 'name' will be treated as a
single path segment.
'further_path' is a list of names still to be traversed. This method
is allowed to change the contents of 'further_path'.
You can explicitly pass in an ITraversable as the 'traversable'
argument. If you do not, the given object will be adapted to ITraversable.
'request' is passed in when traversing from presentation code. This
allows paths like @@foo to work.
Raises TraversalError if path cannot be found and 'default' was
not provided.
"""
if name == ".":
return obj
if name == "..":
return obj.__parent__
if name and name[:1] in "@+":
ns, nm = nsParse(name)
if ns:
return namespaceLookup(ns, nm, obj, request)
else:
nm = name
if traversable is None:
# not all objects have __class__, for example old style classes
if getattr(obj, "__class__", None) == dict:
# Special-case dicts
return obj[name]
traversable = ITraversable(obj, None)
if traversable is None:
raise TraversalError("No traversable adapter found", obj)
try:
return traversable.traverse(nm, further_path)
except TraversalError:
if default is not _marker:
return default
else:
raise
except NotFoundError, v: # BBB Backward Compatibility
warnings.warn(
"A %s instance raised a NotFoundError in "
"traverse. Raising NotFoundError in this "
"method is deprecated and will no-longer be supported "
"starting in Zope 3.3. TraversalError should "
"be raised instead." % traversable.__class__.__name__,
DeprecationWarning,
)
if default is not _marker:
return default
else:
raise
def trustedTraverse(
ob,
path,
ignored,
):
if not path: return self
get = getattr
has = hasattr
N = None
M = rebindFunction # artifical marker
if isinstance(path, str): path = path.split('/')
else: path = list(path)
REQUEST = get(ob, 'REQUEST', None)
if REQUEST is None:
REQUEST = FakeRequest()
setDefaultSkin(REQUEST)
REQUEST['TraversalRequestNameStack'] = path
path.reverse()
pop = path.pop
if len(path) > 1 and not path[0]:
# Remove trailing slash
path.pop(0)
if not path[-1]:
# If the path starts with an empty string, go to the root first.
pop()
self = ob.getPhysicalRoot()
object = ob
while path:
name = pop()
__traceback_info__ = path, name
if name == '..':
o = getattr(object, 'aq_parent', M)
if o is not M:
object = o
continue
if name and name[:1] in '@+':
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
o = namespaceLookup(ns, nm, object, REQUEST).__of__(object)
except TraversalError:
raise KeyError(name)
object = o
continue
t = get(object, '__bobo_traverse__', M)
if t is not M: o = t(REQUEST, name)
else:
o = get(object, name, M)
if o is M:
try:
o = object[name]
except (AttributeError, TypeError): # better exception
o = queryMultiAdapter((object, REQUEST), Interface, name)
if o is not None:
o = o.__of__(object)
else:
raise AttributeError(name)
object = o
return object
def trustedTraverse(ob, path, ignored,):
if not path: return self
get = getattr
has = hasattr
N = None
M = rebindFunction # artifical marker
if isinstance(path, str): path = path.split('/')
else: path=list(path)
REQUEST = get(ob, 'REQUEST', None)
if REQUEST is None:
REQUEST=FakeRequest()
setDefaultSkin(REQUEST)
REQUEST['TraversalRequestNameStack'] = path
path.reverse()
pop=path.pop
if len(path) > 1 and not path[0]:
# Remove trailing slash
path.pop(0)
if not path[-1]:
# If the path starts with an empty string, go to the root first.
pop()
self=ob.getPhysicalRoot()
object = ob
while path:
name=pop()
__traceback_info__ = path, name
if name == '..':
o=getattr(object, 'aq_parent', M)
if o is not M:
object=o
continue
if name and name[:1] in '@+':
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
o = namespaceLookup(ns, nm, object, REQUEST).__of__(object)
except TraversalError:
raise KeyError(name)
object = o
continue
t=get(object, '__bobo_traverse__', M)
if t is not M: o=t(REQUEST, name)
else:
o = get(object, name, M)
if o is M:
try: o = object[name]
except (AttributeError, TypeError): # better exception
o = queryMultiAdapter((object, REQUEST), Interface, name)
if o is not None:
o = o.__of__(object)
else:
raise AttributeError(name)
object = o
return object
