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"""Represents a wheel file and provides access to the various parts of the
name that have meaning.
"""
from __future__ import annotations
from collections.abc import Iterable
from pip._vendor.packaging.tags import Tag
from pip._vendor.packaging.utils import (
InvalidWheelFilename as _PackagingInvalidWheelFilename,
)
from pip._vendor.packaging.utils import parse_wheel_filename
from pip._internal.exceptions import InvalidWheelFilename
class Wheel:
"""A wheel file"""
def __init__(self, filename: str) -> None:
self.filename = filename
try:
wheel_info = parse_wheel_filename(filename)
except _PackagingInvalidWheelFilename as e:
raise InvalidWheelFilename(e.args[0]) from None
self.name, _version, self.build_tag, self.file_tags = wheel_info
self.version = str(_version)
def get_formatted_file_tags(self) -> list[str]:
"""Return the wheel's tags as a sorted list of strings."""
return sorted(str(tag) for tag in self.file_tags)
def support_index_min(self, tags: list[Tag]) -> int:
"""Return the lowest index that one of the wheel's file_tag combinations
achieves in the given list of supported tags.
For example, if there are 8 supported tags and one of the file tags
is first in the list, then return 0.
:param tags: the PEP 425 tags to check the wheel against, in order
with most preferred first.
:raises ValueError: If none of the wheel's file tags match one of
the supported tags.
"""
try:
return next(i for i, t in enumerate(tags) if t in self.file_tags)
except StopIteration:
raise ValueError()
def find_most_preferred_tag(
self, tags: list[Tag], tag_to_priority: dict[Tag, int]
) -> int:
"""Return the priority of the most preferred tag that one of the wheel's file
tag combinations achieves in the given list of supported tags using the given
tag_to_priority mapping, where lower priorities are more-preferred.
This is used in place of support_index_min in some cases in order to avoid
an expensive linear scan of a large list of tags.
:param tags: the PEP 425 tags to check the wheel against.
:param tag_to_priority: a mapping from tag to priority of that tag, where
lower is more preferred.
:raises ValueError: If none of the wheel's file tags match one of
the supported tags.
"""
return min(
tag_to_priority[tag] for tag in self.file_tags if tag in tag_to_priority
)
def supported(self, tags: Iterable[Tag]) -> bool:
"""Return whether the wheel is compatible with one of the given tags.
:param tags: the PEP 425 tags to check the wheel against.
"""
return not self.file_tags.isdisjoint(tags)