Mercurial > hgrepos > Python > apps > py-cutils

annotate cutils/util/constants.py @ 172:804a823c63f5

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Now the selection of the default algorithm depends on availiability in hashlib
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 10 Jan 2025 11:38:31 +0100
parents a813094ae4f5
children 0f4febf646f5
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1 # -*- coding: utf-8 -*-
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2 # :-
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3 # :Copyright: (c) 2020-2025 Franz Glasner
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4 # :License: BSD-3-Clause
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5 # :-
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6 r"""Common constants and compatibility definitions.
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7
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8 """
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10 __all__ = ["PATH_TYPES",
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11 "READ_CHUNK_SIZE",
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12 "MAX_AUTO_MAP_SIZE",
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13 "MAP_WINDOW_SIZE"
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14 ]
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17 try:
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18 import pathlib
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19 except ImportError:
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20 pathlib = None
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21
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22 from . import PY2
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25 if PY2:
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26 PATH_TYPES = (unicode, str) # noqa: F821 (undefined name 'unicode')
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27 else:
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28 if pathlib:
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29 PATH_TYPES = (str, bytes, pathlib.Path)
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30 else:
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31 PATH_TYPES = (str, bytes)
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32
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33 READ_CHUNK_SIZE = 2 * 1024 * 1024 # like BUFSIZE_MAX on FreeBSD
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34 MAX_AUTO_MAP_SIZE = 8 * 1024 * 1024
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35 MAP_WINDOW_SIZE = MAX_AUTO_MAP_SIZE # do not totally trash memory on big files