Merge of the traversal refactoring branch.

doc/CHANGES.txt

@@ -49,6 +49,17 @@ Zope Changes
 
     Features added
 
+      - The traversal has been refactored to take heed of Zope3s 
+        IPublishTraverse adapter interfaces. The ZCML directives 
+        five:traversable and five:defaultViewable are therefore no
+        longer needed, as everything now is five:traversable and
+        five:defaultViewable. 
+
+        There was a bug in earlier versions of Five that allowed you 
+        to do custom publishing traversal with ITraversable adapters.
+        This bug has been corrected. Anybody using ITraversable 
+        adapters need to convert them to IPublishTraversal adapters.
+
       - Testing.makerequest: Added an 'environ' argument so
         clients can use mappings other than os.environ.
 

lib/python/OFS/Traversable.py

@@ -25,9 +25,14 @@ from AccessControl.ZopeGuards import guarded_getattr
 from Acquisition import Acquired, aq_inner, aq_parent, aq_base
 from zExceptions import NotFound
 from ZODB.POSException import ConflictError
-from zope.interface import implements
+from zope.interface import implements, Interface
 
 from interfaces import ITraversable
+from zope.app.traversing.interfaces import ITraversable as IZope3Traversable
+from zope.component import queryMultiAdapter
+from zope.app.traversing.interfaces import TraversalError
+from zope.app.traversing.namespace import nsParse
+from zope.app.traversing.namespace import namespaceLookup
 
 _marker = object()
 
@@ -59,6 +64,7 @@ class Traversable:
             return self.virtual_url_path()
 
         spp = self.getPhysicalPath()
+            
         try:
             toUrl = self.REQUEST.physicalPathToURL
         except AttributeError:
@@ -133,7 +139,6 @@ class Traversable:
         If true, then all of the objects along the path are validated with
         the security machinery. Usually invoked using restrictedTraverse().
         """
-
         if not path:
             return self
 
@@ -188,7 +193,19 @@ class Traversable:
                         continue
 
                 bobo_traverse = _getattr(obj, '__bobo_traverse__', _none)
-                if bobo_traverse is not _none:
+                if name and name[:1] in '@+':
+                    # Process URI segment parameters.
+                    ns, nm = nsParse(name)
+                    if ns:
+                        try:
+                            next = namespaceLookup(ns, nm, obj, 
+                                                   self.REQUEST).__of__(obj)
+                            if restricted and not securityManager.validate(
+                                obj, obj, name, next):
+                                raise Unauthorized, name
+                        except TraversalError:
+                            raise AttributeError(name)
+                elif bobo_traverse is not _none:
                     next = bobo_traverse(REQUEST, name)
                     if restricted:
                         if aq_base(next) is not next:
@@ -227,12 +244,21 @@ class Traversable:
                     else:
                         next = _getattr(obj, name, marker)
                     if next is marker:
+                        try:
                             try:
                                 next=obj[name]
                             except AttributeError:
                                 # Raise NotFound for easier debugging
                                 # instead of AttributeError: __getitem__
                                 raise NotFound, name
+                        except (NotFound, KeyError): 
+                            # Try to look for a view
+                            next = queryMultiAdapter((obj, self.REQUEST), 
+                                                     Interface, name)
+                            if next is None:
+                                # Didn't find one, reraise the error:
+                                raise
+                            next = next.__of__(obj)
                         if restricted and not securityManager.validate(
                             obj, obj, _none, next):
                             raise Unauthorized, name

lib/python/Products/PageTemplates/Expressions.py

@@ -248,12 +248,28 @@ class NotExpr:
     def __repr__(self):
         return 'not:%s' % `self._s`
 
+from zope.interface import Interface, implements
+from zope.component import queryMultiAdapter
+from zope.app.traversing.namespace import nsParse
+from zope.app.traversing.namespace import namespaceLookup
+from zope.app.traversing.interfaces import TraversalError
+from zope.publisher.interfaces.browser import IBrowserRequest
+from zope.app.publication.browser import setDefaultSkin
+
+class FakeRequest(dict):
+    implements(IBrowserRequest)
+
+    def getURL(self):
+        return "http://codespeak.net/z3/five"
+
 def restrictedTraverse(object, path, securityManager,
                        get=getattr, has=hasattr, N=None, M=[],
                        TupleType=type(()) ):
 
-    REQUEST = {'path': path}
+    REQUEST = FakeRequest()
+    REQUEST['path'] = path
     REQUEST['TraversalRequestNameStack'] = path = path[:] # Copy!
+    setDefaultSkin(REQUEST)
     path.reverse()
     validate = securityManager.validate
     __traceback_info__ = REQUEST
@@ -282,7 +298,20 @@ def restrictedTraverse(object, path, securityManager,
                 continue
 
         t=get(object, '__bobo_traverse__', N)
-        if t is not N:
+        if name and name[:1] in '@+':
+            import pdb
+            pdb.set_trace()
+            # Process URI segment parameters.
+            ns, nm = nsParse(name)
+            if ns:
+                try:
+                    o = namespaceLookup(ns, nm, object, 
+                                           REQUEST).__of__(object)
+                    if not validate(object, object, name, o):
+                        raise Unauthorized, name
+                except TraversalError:
+                    raise AttributeError(name)
+        elif t is not N:
             o=t(REQUEST, name)
 
             container = None
@@ -305,7 +334,16 @@ def restrictedTraverse(object, path, securityManager,
                     # XXX maybe in Python 2.2 we can just check whether
                     # the object has the attribute "__getitem__"
                     # instead of blindly catching exceptions.
+                    try:
                         o = object[name]
+                    except (AttributeError, KeyError):
+                        # Try to look for a view
+                        o = queryMultiAdapter((object, REQUEST), 
+                                                 Interface, name)
+                        if o is None:
+                            # Didn't find one, reraise the error:
+                            raise
+                        o = o.__of__(object)
                 except AttributeError, exc:
                     if str(exc).find('__getitem__') >= 0:
                         # The object does not support the item interface.