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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import ast
import os
def normsep(path):
"""
Normalize path separators, by using forward slashes instead of whatever
:py:const:`os.sep` is.
"""
if os.sep != "/":
# Python 2 is happy to do things like byte_string.replace(u'foo',
# u'bar'), but not Python 3.
if isinstance(path, bytes):
path = path.replace(os.sep.encode("ascii"), b"/")
else:
path = path.replace(os.sep, "/")
if os.altsep and os.altsep != "/":
if isinstance(path, bytes):
path = path.replace(os.altsep.encode("ascii"), b"/")
else:
path = path.replace(os.altsep, "/")
return path
def evaluate_list_from_string(list_string):
"""
This is a utility function for converting a string obtained from a manifest
into a list. If the string is not a valid list when converted, an error will be
raised from `ast.eval_literal`. For example, you can convert entries like this
into a list:
```
test_settings=
["hello", "world"],
[1, 10, 100],
values=
5,
6,
7,
8,
```
"""
parts = [
x.strip(",")
for x in list_string.strip(",").replace("\r", "").split("\n")
if x.strip()
]
return ast.literal_eval("[" + ",".join(parts) + "]")
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