Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/openpyxl/utils/escape.py: 50%

1# Copyright (c) 2010-2024 openpyxl 

2 

3""" 

4OOXML has non-standard escaping for characters < \031 

5""" 

6 

7import re 

8 

9 

10def escape(value): 

11 r""" 

12 Convert ASCII < 31 to OOXML: \n == _x + hex(ord(\n)) + _ 

13 """ 

14 

15 CHAR_REGEX = re.compile(r"[\001-\031]") 

16 

17 def _sub(match): 

18 """ 

19 Callback to escape chars 

20 """ 

21 return "_x{:0>4x}_".format(ord(match.group(0))) 

22 

23 return CHAR_REGEX.sub(_sub, value) 

24 

25 

26def unescape(value): 

27 r""" 

28 Convert escaped strings to ASCIII: _x000a_ == \n 

29 """ 

30 

31 

32 ESCAPED_REGEX = re.compile("_x([0-9A-Fa-f]{4})_") 

33 

34 def _sub(match): 

35 """ 

36 Callback to unescape chars 

37 """ 

38 return chr(int(match.group(1), 16)) 

39 

40 if "_x" in value: 

41 value = ESCAPED_REGEX.sub(_sub, value) 

42 

43 return value