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"""
fs.wrapfs.subfs
===============
An FS wrapper class for accessing just a subdirectory for an FS.
"""
from fs.wrapfs import WrapFS
from fs.errors import *
from fs.path import *
class SubFS(WrapFS):
"""A SubFS represents a sub directory of another filesystem object.
SubFS objects are returned by opendir, which effectively creates a
'sandbox' filesystem that can only access files/dirs under a root path
within its 'parent' dir.
"""
def __init__(self, wrapped_fs, sub_dir):
self.sub_dir = abspath(normpath(sub_dir))
super(SubFS,self).__init__(wrapped_fs)
def _encode(self, path):
return pathjoin(self.sub_dir, relpath(normpath(path)))
def _decode(self, path):
return abspath(normpath(path))[len(self.sub_dir):]
def __str__(self):
#return self.wrapped_fs.desc(self.sub_dir)
return '<SubFS: %s/%s>' % (self.wrapped_fs, self.sub_dir.lstrip('/'))
def __unicode__(self):
return u'<SubFS: %s/%s>' % (self.wrapped_fs, self.sub_dir.lstrip('/'))
def __repr__(self):
return "SubFS(%r, %r)" % (self.wrapped_fs, self.sub_dir)
def desc(self, path):
if path in ('', '/'):
return self.wrapped_fs.desc(self.sub_dir)
return '%s!%s' % (self.wrapped_fs.desc(self.sub_dir), path)
def setcontents(self, path, data, chunk_size=64*1024):
path = self._encode(path)
return self.wrapped_fs.setcontents(path, data, chunk_size=chunk_size)
def opendir(self, path):
if not self.exists(path):
raise ResourceNotFoundError(path)
path = self._encode(path)
return self.wrapped_fs.opendir(path)
def close(self):
self.closed = True
def removedir(self, path, recursive=False, force=False):
# Careful not to recurse outside the subdir
path = normpath(path)
if path in ('', '/'):
raise RemoveRootError(path)
super(SubFS,self).removedir(path,force=force)
if recursive:
try:
if dirname(path) not in ('', '/'):
self.removedir(dirname(path),recursive=True)
except DirectoryNotEmptyError:
pass
# if path in ("","/"):
# if not force:
# for path2 in self.listdir(path):
# raise DirectoryNotEmptyError(path)
# else:
# for path2 in self.listdir(path,absolute=True,files_only=True):
# try:
# self.remove(path2)
# except ResourceNotFoundError:
# pass
# for path2 in self.listdir(path,absolute=True,dirs_only=True):
# try:
# self.removedir(path2,force=True)
# except ResourceNotFoundError:
# pass
# else:
# super(SubFS,self).removedir(path,force=force)
# if recursive:
# try:
# if dirname(path):
# self.removedir(dirname(path),recursive=True)
# except DirectoryNotEmptyError:
# pass
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