Current File : //lib/python3/dist-packages/duplicity/backends/localbackend.py
# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4; encoding:utf-8 -*-
#
# Copyright 2002 Ben Escoto <ben@emerose.org>
# Copyright 2007 Kenneth Loafman <kenneth@loafman.com>
#
# This file is part of duplicity.
#
# Duplicity is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# Duplicity is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with duplicity; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import duplicity.backend
from duplicity import (
path,
progress,
)
from duplicity.errors import BackendException
class LocalBackend(duplicity.backend.Backend):
"""Use this backend when saving to local disk
Urls look like file://testfiles/output. Relative to root can be
gotten with extra slash (file:///usr/local).
"""
def __init__(self, parsed_url):
duplicity.backend.Backend.__init__(self, parsed_url)
# The URL form "file:MyFile" is not a valid duplicity target.
if not parsed_url.path.startswith("//"):
raise BackendException("Bad file:// path syntax.")
self.remote_pathdir = path.Path(parsed_url.path[2:])
try:
os.makedirs(self.remote_pathdir.base)
except Exception:
pass
def _move(self, source_path, remote_filename):
target_path = self.remote_pathdir.append(remote_filename)
try:
source_path.rename(target_path)
return True
except OSError:
return False
def _put(self, source_path, remote_filename):
target_path = self.remote_pathdir.append(remote_filename)
source_path.setdata()
source_size = source_path.getsize()
progress.report_transfer(0, source_size)
target_path.writefileobj(source_path.open("rb"))
progress.report_transfer(source_size, source_size)
def _get(self, filename, local_path):
source_path = self.remote_pathdir.append(filename)
local_path.writefileobj(source_path.open("rb"))
def _list(self):
return self.remote_pathdir.listdir()
def _delete(self, filename):
self.remote_pathdir.append(filename).delete()
def _delete_list(self, filenames):
for filename in filenames:
self.remote_pathdir.append(filename).delete()
def _query(self, filename):
target_file = self.remote_pathdir.append(filename)
target_file.setdata()
size = target_file.getsize() if target_file.exists() else -1
return {"size": size}
duplicity.backend.register_backend("file", LocalBackend)
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