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