cloudkitty/cloudkitty/backend/base.py

44 lines
1.1 KiB
Python

# Copyright 2014 Objectif Libre
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# @author: Stéphane Albert
#
class BaseIOBackend(object):
def __init__(self, path):
self.open(path)
def open(self, path):
raise NotImplementedError
def tell(self):
raise NotImplementedError
def seek(self, offset, from_what=0):
# 0 beg, 1 cur, 2 end
raise NotImplementedError
def flush(self):
raise NotImplementedError
def write(self, data):
raise NotImplementedError
def read(self):
raise NotImplementedError
def close(self):
raise NotImplementedError