added method items() to MultiKeyDict

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1519 fd906abe-77d9-0310-91a1-e0d9ade77398

index/README.txt

@@ -62,3 +62,13 @@ Index entries that are present in the stored dictionary must always match:
 
   >>> registry[('edit.html', 'task', 'bugfixes', 'Custom')]
   'edit.html for Custom skin'
+
+If you don't know any more what entries we had added to the registry just
+query its items() method:
+
+  >>> registry.items()
+  ((('edit.html', 'topic', 'zope3', 'Custom'), 'very special edit.html'),
+   (('edit.html', None, None, 'Custom'), 'edit.html for Custom skin'),
+   (('index.html', None, None, None), 'global index.html'),
+   (('index.html', None, None, 'Custom'), 'Global index.html for Custom skin'),
+   (('index.html', 'topic', None, None), 'index.html for type "topic"'))

index/multikey.py

@@ -53,7 +53,7 @@ class MultiKeyDict(object):
         assert type(key) is tuple
         assert len(key) == self.keylen
         mapping = self.mapping
-        for n, k in enumerate(key):
+        for k in key:
             entry = mapping.get(k, _not_found)
             if entry == _not_found:
                 entry = self._fallback(mapping, k)
@@ -65,3 +65,14 @@ class MultiKeyDict(object):
     def _fallback(self, mapping, key):
         return mapping.get(None, _not_found)
 
+    def items(self):
+        result = []
+        self._step(result, (), self.mapping)
+        return tuple(result)
+
+    def _step(self, result, entry, value):
+        if len(entry) < self.keylen:
+            for k, v in value.items():
+                self._step(result, entry+(k,), v)
+        else:
+            result.append((entry, value))