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34 lines
882 B
34 lines
882 B
6 months ago
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from typing import Callable, Iterable, Iterator, TypeVar, Union, overload
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import setuptools.extern.jaraco.text as text
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from setuptools.extern.packaging.requirements import Requirement
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_T = TypeVar("_T")
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_StrOrIter = Union[str, Iterable[str]]
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def parse_strings(strs: _StrOrIter) -> Iterator[str]:
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"""
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Yield requirement strings for each specification in `strs`.
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`strs` must be a string, or a (possibly-nested) iterable thereof.
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"""
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return text.join_continuation(map(text.drop_comment, text.yield_lines(strs)))
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@overload
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def parse(strs: _StrOrIter) -> Iterator[Requirement]:
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...
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@overload
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def parse(strs: _StrOrIter, parser: Callable[[str], _T]) -> Iterator[_T]:
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...
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def parse(strs, parser=Requirement):
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"""
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Replacement for ``pkg_resources.parse_requirements`` that uses ``packaging``.
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"""
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return map(parser, parse_strings(strs))
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