import os.path
import urllib
import simplejson
-import sys
from cStringIO import StringIO
from twisted.python.failure import Failure
from allmydata.scripts.common import get_alias, escape_path, \
DefaultAliasMarker, UnknownAliasError
from allmydata.scripts.common_http import do_http
from allmydata import uri
-from twisted.python import usage
from allmydata.util.stringutils import unicode_to_url, listdir_unicode, open_unicode
from allmydata.util.assertutil import precondition