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62 lines
2.2 KiB
62 lines
2.2 KiB
from pip._vendor.packaging.utils import canonicalize_name
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class FormatControl(object):
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"""A helper class for controlling formats from which packages are installed.
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If a field is falsy, it isn't set. If it is {':all:'}, it should match all
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packages except those listed in the other field. Only one field can be set
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to {':all:'} at a time. The rest of the time exact package name matches
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are listed, with any given package only showing up in one field at a time.
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"""
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def __init__(self, no_binary=None, only_binary=None):
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self.no_binary = set() if no_binary is None else no_binary
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self.only_binary = set() if only_binary is None else only_binary
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def __eq__(self, other):
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return self.__dict__ == other.__dict__
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def __ne__(self, other):
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return not self.__eq__(other)
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def __repr__(self):
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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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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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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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self.handle_mutual_excludes(
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':all:', self.no_binary, self.only_binary,
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)
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