Don't depend on ZODB; shuffle policy responsibilities around a little.

1 files changed, 45 insertions, 0 deletions

diff --git a/repoze/bfg/policy.py b/repoze/bfg/policy.py
new file mode 100644
index 000000000..a25da9efd
--- /dev/null
+++ b/repoze/bfg/policy.py
@@ -0,0 +1,45 @@
+import urllib
+
+from zope.interface import implements
+
+from repoze.bfg.interfaces import IPolicy
+
+def split_path(path):
+    if path.startswith('/'):
+        path = path[1:]
+    if path.endswith('/'):
+        path = path[:-1]
+    clean=[]
+    for item in path.split('/'):
+        item = urllib.unquote(item) # deal with spaces in path segment
+        if not item or item=='.':
+            continue
+        elif item == '..':
+            del clean[-1]
+        else:
+            clean.append(item)
+    return clean
+
+class NaivePolicy:
+
+    implements(IPolicy)
+
+    def __call__(self, environ, root):
+        path = split_path(environ['PATH_INFO'])
+        
+        ob = root
+        name = ''
+        while path:
+            element = pop(path)
+            try:
+                ob = ob[element]
+            except KeyError:
+                if path:
+                    name = pop(path)
+                break
+            
+        return ob, name, path
+            
+def pop(path):
+    return path.pop(0)
+