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