27     def normpath(self, path):  argument
28         if path in self.normpathcache:
29             return self.normpathcache[path]
30         newpath = os.path.normpath(path)
31         self.normpathcache[path] = newpath
34     def _callstat(self, path):  argument
35         if path in self.statcache:
36             return self.statcache[path]
38             st = os.stat(path)
39             self.statcache[path] = st
42             self.statcache[path] = False
49     def callstat(self, path):  argument
50         path = self.normpath(path)
51         self.calllstat(path)
52         return self.statcache[path]
54     def calllstat(self, path):  argument
55         path = self.normpath(path)
56         if path in self.lstatcache:
57             return self.lstatcache[path]
60             lst = os.lstat(path)
61             self.lstatcache[path] = lst
63                 self.statcache[path] = lst
65                 self._callstat(path)
68             self.lstatcache[path] = False
69             self.statcache[path] = False
74     def isfile(self, path):  argument
76         st = self.callstat(path)
91     def islink(self, path):  argument
93         st = self.calllstat(path)
100     def exists(self, path):  argument
102         if self.callstat(path):
106     def lexists(self, path):  argument
108         if self.calllstat(path):
112     def stat(self, path):  argument
113         return self.callstat(path)
115     def lstat(self, path):  argument
116         return self.calllstat(path)
135             if self.isdir(os.path.join(top, name)):
143             new_path = os.path.join(top, name)
152         return (file + os.path.sep).startswith(root)
159         for d in rel_path.split(os.path.sep):
163             if d == os.path.pardir: # '..'
166                     start = os.path.dirname(start)
171                 (start, have_dir) = self.__realpath(os.path.join(start, d),
184             target = os.path.normpath(os.readlink(file))
186             if not os.path.isabs(target):
187                 tdir = os.path.dirname(file)
209         root = os.path.normpath(root)
210         file = os.path.normpath(file)
212         if not root.endswith(os.path.sep):
214             root = root + os.path.sep