1 # Copyright (C) 2011, 2012 Nippon Telegraph and Telephone Corporation.
2 # Copyright (C) 2011 Isaku Yamahata <yamahata at valinux co jp>
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
20 def msg_pack_into(fmt, buf, offset, *args):
21 needed_len = offset + struct.calcsize(fmt)
22 if len(buf) < needed_len:
23 buf += bytearray(needed_len - len(buf))
25 struct.pack_into(fmt, buf, offset, *args)