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from typing import FrozenSet, Optional, Set
from pip._vendor.packaging.utils import canonicalize_name
from pip._internal.exceptions import CommandError
class FormatControl:
"""Helper for managing formats from which a package can be installed."""
__slots__ = ["no_binary", "only_binary"]
def __init__(
self,
no_binary: Optional[Set[str]] = None,
only_binary: Optional[Set[str]] = None,
) -> None:
if no_binary is None:
no_binary = set()
if only_binary is None:
only_binary = set()
self.no_binary = no_binary
self.only_binary = only_binary
def __eq__(self, other: object) -> bool:
if not isinstance(other, self.__class__):
return NotImplemented
if self.__slots__ != other.__slots__:
return False
return all(getattr(self, k) == getattr(other, k) for k in self.__slots__)
def __repr__(self) -> str:
return "{}({}, {})".format(
self.__class__.__name__, self.no_binary, self.only_binary
)
@staticmethod
def handle_mutual_excludes(value: str, target: Set[str], other: Set[str]) -> None:
if value.startswith("-"):
raise CommandError(
"--no-binary / --only-binary option requires 1 argument."
)
new = value.split(",")
while ":all:" in new:
other.clear()
target.clear()
target.add(":all:")
del new[: new.index(":all:") + 1]
# Without a none, we want to discard everything as :all: covers it
if ":none:" not in new:
return
for name in new:
if name == ":none:":
target.clear()
continue
name = canonicalize_name(name)
other.discard(name)
target.add(name)
def get_allowed_formats(self, canonical_name: str) -> FrozenSet[str]:
result = {"binary", "source"}
if canonical_name in self.only_binary:
result.discard("source")
elif canonical_name in self.no_binary:
result.discard("binary")
elif ":all:" in self.only_binary:
result.discard("source")
elif ":all:" in self.no_binary:
result.discard("binary")
return frozenset(result)
def disallow_binaries(self) -> None:
self.handle_mutual_excludes(
":all:",
self.no_binary,
self.only_binary,
)