Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pathlib2/_posixpath.py: 11%

1import os 

2import stat 

3from os.path import abspath, split, join, isabs 

4 

5 

6def realpath(filename, *, strict=False): 

7 """Return the canonical path of the specified filename, eliminating any 

8symbolic links encountered in the path.""" 

9 filename = os.fspath(filename) 

10 path, ok = _joinrealpath(filename[:0], filename, strict, {}) 

11 return abspath(path) 

12 

13 

14# Join two paths, normalizing and eliminating any symbolic links 

15# encountered in the second path. 

16def _joinrealpath(path, rest, strict, seen): 

17 if isinstance(path, bytes): 

18 sep = b'/' 

19 curdir = b'.' 

20 pardir = b'..' 

21 else: 

22 sep = '/' 

23 curdir = '.' 

24 pardir = '..' 

25 

26 if isabs(rest): 

27 rest = rest[1:] 

28 path = sep 

29 

30 while rest: 

31 name, _, rest = rest.partition(sep) 

32 if not name or name == curdir: 

33 # current dir 

34 continue 

35 if name == pardir: 

36 # parent dir 

37 if path: 

38 path, name = split(path) 

39 if name == pardir: 

40 path = join(path, pardir, pardir) 

41 else: 

42 path = pardir 

43 continue 

44 newpath = join(path, name) 

45 try: 

46 st = os.lstat(newpath) 

47 except OSError: 

48 if strict: 

49 raise 

50 is_link = False 

51 else: 

52 is_link = stat.S_ISLNK(st.st_mode) 

53 if not is_link: 

54 path = newpath 

55 continue 

56 # Resolve the symbolic link 

57 if newpath in seen: 

58 # Already seen this path 

59 path = seen[newpath] 

60 if path is not None: 

61 # use cached value 

62 continue 

63 # The symlink is not resolved, so we must have a symlink loop. 

64 if strict: 

65 # Raise OSError(errno.ELOOP) 

66 os.stat(newpath) 

67 else: 

68 # Return already resolved part + rest of the path unchanged. 

69 return join(newpath, rest), False 

70 seen[newpath] = None # not resolved symlink 

71 path, ok = _joinrealpath(path, os.readlink(newpath), strict, seen) 

72 if not ok: 

73 return join(path, rest), False 

74 seen[newpath] = path # resolved symlink 

75 

76 return path, True