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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
#
import struct
class Packer:
def read(self, n): abstract
def write(self, s): abstract
def unpack(self, fmt):
values = struct.unpack(fmt, self.read(struct.calcsize(fmt)))
if len(values) == 1:
return values[0]
else:
return values
def pack(self, fmt, *args):
self.write(struct.pack(fmt, *args))
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