Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/ptyprocess/util.py: 9%

1try: 

2 from shutil import which # Python >= 3.3 

3except ImportError: 

4 import os, sys 

5 

6 # This is copied from Python 3.4.1 

7 def which(cmd, mode=os.F_OK | os.X_OK, path=None): 

8 """Given a command, mode, and a PATH string, return the path which 

9 conforms to the given mode on the PATH, or None if there is no such 

10 file. 

11  

12 `mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result 

13 of os.environ.get("PATH"), or can be overridden with a custom search 

14 path. 

15  

16 """ 

17 # Check that a given file can be accessed with the correct mode. 

18 # Additionally check that `file` is not a directory, as on Windows 

19 # directories pass the os.access check. 

20 def _access_check(fn, mode): 

21 return (os.path.exists(fn) and os.access(fn, mode) 

22 and not os.path.isdir(fn)) 

23 

24 # If we're given a path with a directory part, look it up directly rather 

25 # than referring to PATH directories. This includes checking relative to the 

26 # current directory, e.g. ./script 

27 if os.path.dirname(cmd): 

28 if _access_check(cmd, mode): 

29 return cmd 

30 return None 

31 

32 if path is None: 

33 path = os.environ.get("PATH", os.defpath) 

34 if not path: 

35 return None 

36 path = path.split(os.pathsep) 

37 

38 if sys.platform == "win32": 

39 # The current directory takes precedence on Windows. 

40 if not os.curdir in path: 

41 path.insert(0, os.curdir) 

42 

43 # PATHEXT is necessary to check on Windows. 

44 pathext = os.environ.get("PATHEXT", "").split(os.pathsep) 

45 # See if the given file matches any of the expected path extensions. 

46 # This will allow us to short circuit when given "python.exe". 

47 # If it does match, only test that one, otherwise we have to try 

48 # others. 

49 if any(cmd.lower().endswith(ext.lower()) for ext in pathext): 

50 files = [cmd] 

51 else: 

52 files = [cmd + ext for ext in pathext] 

53 else: 

54 # On other platforms you don't have things like PATHEXT to tell you 

55 # what file suffixes are executable, so just pass on cmd as-is. 

56 files = [cmd] 

57 

58 seen = set() 

59 for dir in path: 

60 normdir = os.path.normcase(dir) 

61 if not normdir in seen: 

62 seen.add(normdir) 

63 for thefile in files: 

64 name = os.path.join(dir, thefile) 

65 if _access_check(name, mode): 

66 return name 

67 return None 

68 

69 

70class PtyProcessError(Exception): 

71 """Generic error class for this package."""