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comparison mercurial/utils/resourceutil.py @ 45452:dd9e28612468

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resourceutil: document when we expect to take the importlib.resouces code path Differential Revision: https://phab.mercurial-scm.org/D9018
author Martin von Zweigbergk <martinvonz@google.com>
date Sat, 12 Sep 2020 11:18:12 -0700
parents 6c8384afbf77
children 7fd369644c68
comparison
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45451:e53a3d0ef416 45452:dd9e28612468
53 def _package_path(package): 53 def _package_path(package):
54 return os.path.join(_rootpath, *package.split(b".")) 54 return os.path.join(_rootpath, *package.split(b"."))
55 55
56 56
57 try: 57 try:
58 # importlib.resources exists from Python 3.7; see fallback in except clause
59 # further down
58 from importlib import resources 60 from importlib import resources
59 61
60 from .. import encoding 62 from .. import encoding
61 63
62 # Force loading of the resources module 64 # Force loading of the resources module
76 for r in resources.contents(pycompat.sysstr(package)): 78 for r in resources.contents(pycompat.sysstr(package)):
77 yield encoding.strtolocal(r) 79 yield encoding.strtolocal(r)
78 80
79 81
80 except (ImportError, AttributeError): 82 except (ImportError, AttributeError):
83 # importlib.resources was not found (almost definitely because we're on a
84 # Python version before 3.7)
81 85
82 def open_resource(package, name): 86 def open_resource(package, name):
83 path = os.path.join(_package_path(package), name) 87 path = os.path.join(_package_path(package), name)
84 return open(path, "rb") 88 return open(path, "rb")
85 89