Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/importlib_metadata/_adapters.py: 38%

1import re 

2import textwrap 

3import email.message 

4 

5from ._text import FoldedCase 

6 

7 

8class Message(email.message.Message): 

9 multiple_use_keys = set( 

10 map( 

11 FoldedCase, 

12 [ 

13 'Classifier', 

14 'Obsoletes-Dist', 

15 'Platform', 

16 'Project-URL', 

17 'Provides-Dist', 

18 'Provides-Extra', 

19 'Requires-Dist', 

20 'Requires-External', 

21 'Supported-Platform', 

22 'Dynamic', 

23 ], 

24 ) 

25 ) 

26 """ 

27 Keys that may be indicated multiple times per PEP 566. 

28 """ 

29 

30 def __new__(cls, orig: email.message.Message): 

31 res = super().__new__(cls) 

32 vars(res).update(vars(orig)) 

33 return res 

34 

35 def __init__(self, *args, **kwargs): 

36 self._headers = self._repair_headers() 

37 

38 # suppress spurious error from mypy 

39 def __iter__(self): 

40 return super().__iter__() 

41 

42 def _repair_headers(self): 

43 def redent(value): 

44 "Correct for RFC822 indentation" 

45 if not value or '\n' not in value: 

46 return value 

47 return textwrap.dedent(' ' * 8 + value) 

48 

49 headers = [(key, redent(value)) for key, value in vars(self)['_headers']] 

50 if self._payload: 

51 headers.append(('Description', self.get_payload())) 

52 return headers 

53 

54 @property 

55 def json(self): 

56 """ 

57 Convert PackageMetadata to a JSON-compatible format 

58 per PEP 0566. 

59 """ 

60 

61 def transform(key): 

62 value = self.get_all(key) if key in self.multiple_use_keys else self[key] 

63 if key == 'Keywords': 

64 value = re.split(r'\s+', value) 

65 tk = key.lower().replace('-', '_') 

66 return tk, value 

67 

68 return dict(map(transform, map(FoldedCase, self)))