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annotate planemo/lib/python3.7/site-packages/certifi/core.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
parents d30785e31577
children
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1 # -*- coding: utf-8 -*-
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2
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3 """
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4 certifi.py
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5 ~~~~~~~~~~
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6
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7 This module returns the installation location of cacert.pem or its contents.
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8 """
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9 import os
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10
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11 try:
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12 from importlib.resources import path as get_path, read_text
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13
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14 _CACERT_CTX = None
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15 _CACERT_PATH = None
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16
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17 def where():
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18 # This is slightly terrible, but we want to delay extracting the file
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19 # in cases where we're inside of a zipimport situation until someone
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20 # actually calls where(), but we don't want to re-extract the file
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21 # on every call of where(), so we'll do it once then store it in a
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22 # global variable.
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23 global _CACERT_CTX
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24 global _CACERT_PATH
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25 if _CACERT_PATH is None:
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26 # This is slightly janky, the importlib.resources API wants you to
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27 # manage the cleanup of this file, so it doesn't actually return a
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28 # path, it returns a context manager that will give you the path
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29 # when you enter it and will do any cleanup when you leave it. In
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30 # the common case of not needing a temporary file, it will just
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31 # return the file system location and the __exit__() is a no-op.
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32 #
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33 # We also have to hold onto the actual context manager, because
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34 # it will do the cleanup whenever it gets garbage collected, so
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35 # we will also store that at the global level as well.
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36 _CACERT_CTX = get_path("certifi", "cacert.pem")
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37 _CACERT_PATH = str(_CACERT_CTX.__enter__())
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38
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39 return _CACERT_PATH
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40
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41
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42 except ImportError:
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43 # This fallback will work for Python versions prior to 3.7 that lack the
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44 # importlib.resources module but relies on the existing `where` function
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45 # so won't address issues with environments like PyOxidizer that don't set
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46 # __file__ on modules.
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47 def read_text(_module, _path, encoding="ascii"):
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48 with open(where(), "r", encoding=encoding) as data:
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49 return data.read()
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50
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51 # If we don't have importlib.resources, then we will just do the old logic
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52 # of assuming we're on the filesystem and munge the path directly.
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53 def where():
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54 f = os.path.dirname(__file__)
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55
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56 return os.path.join(f, "cacert.pem")
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57
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58
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59 def contents():
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60 return read_text("certifi", "cacert.pem", encoding="ascii")