Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/requests/_internal_utils.py: 52%

1""" 

2requests._internal_utils 

3~~~~~~~~~~~~~~ 

4 

5Provides utility functions that are consumed internally by Requests 

6which depend on extremely few external helpers (such as compat) 

7""" 

8import re 

9 

10from .compat import builtin_str 

11 

12_VALID_HEADER_NAME_RE_BYTE = re.compile(rb"^[^:\s][^:\r\n]*$") 

13_VALID_HEADER_NAME_RE_STR = re.compile(r"^[^:\s][^:\r\n]*$") 

14_VALID_HEADER_VALUE_RE_BYTE = re.compile(rb"^\S[^\r\n]*$|^$") 

15_VALID_HEADER_VALUE_RE_STR = re.compile(r"^\S[^\r\n]*$|^$") 

16 

17_HEADER_VALIDATORS_STR = (_VALID_HEADER_NAME_RE_STR, _VALID_HEADER_VALUE_RE_STR) 

18_HEADER_VALIDATORS_BYTE = (_VALID_HEADER_NAME_RE_BYTE, _VALID_HEADER_VALUE_RE_BYTE) 

19HEADER_VALIDATORS = { 

20 bytes: _HEADER_VALIDATORS_BYTE, 

21 str: _HEADER_VALIDATORS_STR, 

22} 

23 

24 

25def to_native_string(string, encoding="ascii"): 

26 """Given a string object, regardless of type, returns a representation of 

27 that string in the native string type, encoding and decoding where 

28 necessary. This assumes ASCII unless told otherwise. 

29 """ 

30 if isinstance(string, builtin_str): 

31 out = string 

32 else: 

33 out = string.decode(encoding) 

34 

35 return out 

36 

37 

38def unicode_is_ascii(u_string): 

39 """Determine if unicode string only contains ASCII characters. 

40 

41 :param str u_string: unicode string to check. Must be unicode 

42 and not Python 2 `str`. 

43 :rtype: bool 

44 """ 

45 assert isinstance(u_string, str) 

46 try: 

47 u_string.encode("ascii") 

48 return True 

49 except UnicodeEncodeError: 

50 return False