def match(self, val, _values_override=None):
vals = _values_override
if _values_override is None:
vals = self.vals
if isinstance(val, basestring):
for fval in vals:
if fval in val:
return not self.negate
return self.negate
# this can, and should be optimized to do len checks- iterate
# over the smaller of the two see above about special casing
# bits. need the same protection here, on the offchance (as
# contents sets do), the __getitem__ is non standard.
try:
if self.all:
return vals.issubset(val) != self.negate
# if something intersects, then we return the inverse of negate-
# if negate=False, something is found, result is True
return is_disjoint(vals, val) == self.negate
except TypeError:
# isn't iterable, try the other way around. rely on contains.
if self.all:
for k in vals:
if k not in val:
return self.negate
return not self.negate
for k in vals:
if k in val:
return not self.negate
def request_disable(self, attr, *vals):
if attr != 'use':
return False
set_vals = frozenset(vals)
if self.eapi_obj.magic == '0':
if not set_vals.issubset(self.iuse):
return False
else:
if set_vals.issubset(x.lstrip('-+') for x in self.iuse):
# requested a flag that doesn't exist in iuse
return False
# if any of the flags are forced_use, it's a no go.
return not is_disjoint(set_vals, self._profile.forced_use.
pull_data(self._raw_pkg))
def collect_package_restrictions(restrict, attrs=None, invert=False):
"""Collect PackageRestriction instances inside a restriction.
:param restrict: package instance to scan
:param attrs: None (return all package restrictions), or a sequence of
specific attrs the package restriction must work against.
"""
if not isinstance(restrict, (list, tuple)):
restrict = [restrict]
for r in restrict:
if not isinstance(r, restriction.base):
raise TypeError(
"restrict must be of a restriction.base, not %s: %r" % (
r.__class__.__name__, r))
if attrs is None:
for r in iflatten_func(restrict, _is_package_instance):
yield r
else:
attrs = frozenset(attrs)
for r in iflatten_func(restrict, _is_package_instance):
if invert == is_disjoint(attrs, getattr(r, 'attrs', ())):
yield r
