def walk(self, path):
"""
Walk a filesystem path
Implements the :func:`os.walk` interface.
"""
path = util.sanitize(path)
entries = []
inspect = [path]
while True:
dirstack = []
for entry in inspect:
dirent = self._direntry(entry)
dirs = []
files = []
if dirent:
for e in dirent:
if type(dirent[e]) is dict:
dirs.append(e)
else:
files.append(e)
yield (entry, dirs, files)
dirstack.extend([os.path.join(entry, d) for d in dirs])
inspect = dirstack
if not inspect:
break
raise StopIteration
def isdir(self, path):
"""
Return True if path is a directory
Implements the :func:`os.path.isdir` interface.
"""
path = util.sanitize(path)
return type(self._direntry(path)) is dict
def islink(self, path):
"""
Return True if path is a symlink
.. note::
Currently hard-wired to return False
"""
path = util.sanitize(path)
return False
def exists(self, path):
"""
Return True if path exists
Implements the :func:`os.path.exists` interface.
"""
path = util.sanitize(path)
dirent = self._direntry(os.path.dirname(path))
if path == '/':
return bool(dirent)
return bool(dirent) and os.path.basename(path) in dirent
def listdir(self, path):
"""
Return the directory contents of 'path'
Implements the :func:`os.listdir` interface.
:param path: filesystem path
"""
path = util.sanitize(path)
direntry = self._direntry(path)
if direntry:
entries = list(direntry.keys())
entries.sort()
return entries
return []
def _direntry(self, path):
"""Return the directory "dict" entry for a path"""
path = util.sanitize(path)
if path == '/':
return self._entries
elts = path.split('/')[1:]
current = self._entries
retval = None
for elt in elts:
if elt in current:
retval = current[elt]
current = current[elt]
else:
return None
return retval
def test_sanitize(self):
"""Test sanitize() with rogue paths"""
self.assertEqual(util.sanitize("///"), "/")
self.assertEqual(util.sanitize("///usr//bin///"), "/usr/bin")
self.assertEqual(util.sanitize("///usr//bin"), "/usr/bin")
def test_sanitize(self):
"""Test sanitize() with rogue paths"""
self.assertEqual(util.sanitize('///'), '/')
self.assertEqual(util.sanitize('///usr//bin///'), '/usr/bin')
self.assertEqual(util.sanitize('///usr//bin'), '/usr/bin')
def test_sanitize(self):
"""Test sanitize() with rogue paths"""
self.assertEqual(util.sanitize('///'), '/')
self.assertEqual(util.sanitize('///usr//bin///'), '/usr/bin')
self.assertEqual(util.sanitize('///usr//bin'), '/usr/bin')