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62 lines
1.9 KiB
Python
62 lines
1.9 KiB
Python
# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See LICENSE in the project root
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# for license information.
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from __future__ import print_function, with_statement, absolute_import
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from glob import glob
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import os.path
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import platform
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MAX_FILES_TO_CACHE = 1000
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class PathUnNormcase(object):
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"""Ensures path names of files are returned as they exist on the fs."""
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def __init__(self):
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self._dict = {}
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self._enabled = False
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def enable(self):
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self._enabled = platform.system() == 'Windows'
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def un_normcase(self, file_path):
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if not self._enabled or len(file_path) == 0:
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return file_path
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if file_path in self._dict:
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return self._dict[file_path]
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file_path_to_return = self._get_actual_filename(file_path)
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self.track_file_path_case(file_path_to_return)
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return file_path_to_return
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def track_file_path_case(self, file_path):
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if not self._enabled:
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return
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if len(self._dict) > MAX_FILES_TO_CACHE:
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self._dict.clear()
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self._dict[file_path] = file_path
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def _get_actual_filename(self, name):
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"""
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Use glob to search for a file by building a regex.
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Original source from https://stackoverflow.com/a/30374360/4443457
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(Modified to match file name as well).
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"""
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sep = os.path.sep
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parts = os.path.normpath(name).split(sep)
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dirs = parts[0:-1]
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filename = '{}[{}]'.format(parts[-1][:-1], parts[-1][-1:])
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if dirs[0] == os.path.splitdrive(name)[0]:
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test_name = [dirs[0].upper()]
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else:
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test_name = [sep + dirs[0]]
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for d in dirs[1:]:
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test_name += ["{}[{}]".format(d[: - 1], d[-1])]
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path = glob(sep.join(test_name))[0]
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res = glob(sep.join((path, filename)))
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if not res:
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return name
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return res[0]
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