1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
import urllib
from zope.interface import classProvides
from zope.interface import implements
from repoze.bfg.interfaces import IPublishTraverser
from repoze.bfg.interfaces import IPublishTraverserFactory
def split_path(path):
if path.startswith('/'):
path = path[1:]
if path.endswith('/'):
path = path[:-1]
clean=[]
for segment in path.split('/'):
segment = urllib.unquote(segment) # deal with spaces in path segment
if not segment or segment=='.':
continue
elif segment == '..':
del clean[-1]
else:
clean.append(segment)
return clean
def step(ob, name, default):
if name.startswith('@@'):
return name[2:], default
if not hasattr(ob, '__getitem__'):
return name, default
try:
return name, ob[name]
except KeyError:
return name, default
_marker = ()
class NaivePublishTraverser:
classProvides(IPublishTraverserFactory)
implements(IPublishTraverser)
def __init__(self, root, request):
self.root = root
self.request = request
def __call__(self, path):
path = split_path(path)
ob = self.root
name = ''
while path:
segment = path.pop(0)
segment, next = step(ob, segment, _marker)
if next is _marker:
name = segment
break
ob = next
return ob, name, path
|
