Coverage for d7a/system_files/uid.py: 95%

19 statements  

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1# 

2# Copyright (c) 2015-2021 University of Antwerp, Aloxy NV. 

3# 

4# This file is part of pyd7a. 

5# See https://github.com/Sub-IoT/pyd7a for further info. 

6# 

7# Licensed under the Apache License, Version 2.0 (the "License"); 

8# you may not use this file except in compliance with the License. 

9# You may obtain a copy of the License at 

10# 

11# http://www.apache.org/licenses/LICENSE-2.0 

12# 

13# Unless required by applicable law or agreed to in writing, software 

14# distributed under the License is distributed on an "AS IS" BASIS, 

15# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

16# See the License for the specific language governing permissions and 

17# limitations under the License. 

18# 

19import struct 

20 

21from d7a.support.schema import Validatable, Types 

22from d7a.system_files.file import File 

23from d7a.system_files.system_file_ids import SystemFileIds 

24 

25 

26class UidFile(File, Validatable): 

27 SCHEMA = [{ 

28 "uid": Types.INTEGER(min=0, max=0xFFFFFFFFFFFFFFFF) 

29 }] 

30 

31 

32 def __init__(self, uid=0): 

33 self.uid = uid 

34 File.__init__(self, SystemFileIds.UID.value, 8) 

35 Validatable.__init__(self) 

36 

37 @staticmethod 

38 def parse(s, offset=0, length=8): 

39 uid = s.read("uint:64") 

40 return UidFile(uid=uid) 

41 

42 def __iter__(self): 

43 for byte in bytearray(struct.pack(">Q", self.uid)): 

44 yield byte 

45 

46 

47 def __str__(self): 

48 return "uid={}".format(hex(self.uid))