tahoe-lafs/src/allmydata/scripts/tahoe_mv.py

76 lines
2.4 KiB
Python

from __future__ import print_function
import re
import urllib
import json
from allmydata.scripts.common import get_alias, DEFAULT_ALIAS, escape_path, \
UnknownAliasError
from allmydata.scripts.common_http import do_http, format_http_error
from allmydata.util.encodingutil import to_str
# this script is used for both 'mv' and 'ln'
def mv(options, mode="move"):
nodeurl = options['node-url']
aliases = options.aliases
from_file = options.from_file
to_file = options.to_file
stdout = options.stdout
stderr = options.stderr
if nodeurl[-1] != "/":
nodeurl += "/"
try:
rootcap, from_path = get_alias(aliases, from_file, DEFAULT_ALIAS)
except UnknownAliasError as e:
e.display(stderr)
return 1
from_url = nodeurl + "uri/%s" % urllib.quote(rootcap)
if from_path:
from_url += "/" + escape_path(from_path)
# figure out the source cap
resp = do_http("GET", from_url + "?t=json")
if not re.search(r'^2\d\d$', str(resp.status)):
print(format_http_error("Error", resp), file=stderr)
return 1
data = resp.read()
nodetype, attrs = json.loads(data)
cap = to_str(attrs.get("rw_uri") or attrs["ro_uri"])
# now get the target
try:
rootcap, path = get_alias(aliases, to_file, DEFAULT_ALIAS)
except UnknownAliasError as e:
e.display(stderr)
return 1
to_url = nodeurl + "uri/%s" % urllib.quote(rootcap)
if path:
to_url += "/" + escape_path(path)
if to_url.endswith("/"):
# "mv foo.txt bar/" == "mv foo.txt bar/foo.txt"
to_url += escape_path(from_path[from_path.rfind("/")+1:])
to_url += "?t=uri&replace=only-files"
resp = do_http("PUT", to_url, cap)
status = resp.status
if not re.search(r'^2\d\d$', str(status)):
if status == 409:
print("Error: You can't overwrite a directory with a file", file=stderr)
else:
print(format_http_error("Error", resp), file=stderr)
if mode == "move":
print("NOT removing the original", file=stderr)
return 1
if mode == "move":
# now remove the original
resp = do_http("DELETE", from_url)
if not re.search(r'^2\d\d$', str(resp.status)):
print(format_http_error("Error deleting original after move", resp), file=stderr)
return 2
print("OK", file=stdout)
return 0