41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
|
import os
|
||
|
|
import sys
|
||
|
|
from typing import Union
|
||
|
|
|
||
|
|
if sys.version_info >= (3, 9):
|
||
|
|
StrPath = Union[str, os.PathLike[str]] # Same as _typeshed.StrPath
|
||
|
|
else:
|
||
|
|
StrPath = Union[str, os.PathLike]
|
||
|
|
|
||
|
|
|
||
|
|
def ensure_directory(path):
|
||
|
|
"""Ensure that the parent directory of `path` exists"""
|
||
|
|
dirname = os.path.dirname(path)
|
||
|
|
os.makedirs(dirname, exist_ok=True)
|
||
|
|
|
||
|
|
|
||
|
|
def same_path(p1: StrPath, p2: StrPath) -> bool:
|
||
|
|
"""Differs from os.path.samefile because it does not require paths to exist.
|
||
|
|
Purely string based (no comparison between i-nodes).
|
||
|
|
>>> same_path("a/b", "./a/b")
|
||
|
|
True
|
||
|
|
>>> same_path("a/b", "a/./b")
|
||
|
|
True
|
||
|
|
>>> same_path("a/b", "././a/b")
|
||
|
|
True
|
||
|
|
>>> same_path("a/b", "./a/b/c/..")
|
||
|
|
True
|
||
|
|
>>> same_path("a/b", "../a/b/c")
|
||
|
|
False
|
||
|
|
>>> same_path("a", "a/b")
|
||
|
|
False
|
||
|
|
"""
|
||
|
|
return normpath(p1) == normpath(p2)
|
||
|
|
|
||
|
|
|
||
|
|
def normpath(filename: StrPath) -> str:
|
||
|
|
"""Normalize a file/dir name for comparison purposes."""
|
||
|
|
# See pkg_resources.normalize_path for notes about cygwin
|
||
|
|
file = os.path.abspath(filename) if sys.platform == 'cygwin' else filename
|
||
|
|
return os.path.normcase(os.path.realpath(os.path.normpath(file)))
|