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#!/usr/bin/env python
# vim:sw=4 ts=4 et
def issub(sub, other):
for x in sub:
if x not in other:
return False
return True
class attr_view(object):
def __init__(self, dir):
self.dir = dir
def __repr__(self):
return "%s(%s)" % (type(self).__name__, list(self).__repr__())
def __len__(self):
return len(self.dir)
class attr_setview(attr_view):
def __eq__(self, other):
return len(self) == len(other) and issub(other, self)
def __ne__(self, other):
return not __eq__(self, other)
def __lt__(self, other):
return len(self) < len(other) and issub(self, other)
def __le__(self, other):
return len(self) <= len(other) and issub(self, other)
def __gt__(self, other):
return len(self) > len(other) and issub(other, self)
def __ge__(self, other):
return len(self) >= len(other) and issub(other, self)
def __or__(self, other):
return set(self) | other
def __and__(self, other):
return set(self) & other
def __sub__(self, other):
return set(self) - other
def __xor__(self, other):
return set(self) ^ other
class attr_viewkeys(attr_setview):
def __contains__(self, other):
return other in self.dir
def __iter__(self):
return self.dir.iterkeys()
class attr_viewvalues(attr_view):
def __iter__(self):
return self.dir.itervalues()
class attr_viewitems(attr_setview):
def __contains__(self, other):
(key, val) = other
return key in self.dir and self.dir[key] == val
def __iter__(self):
return self.dir.iteritems()
class attr_viewdict(attr_viewkeys):
"""
Provide a dict-like view on an attribute directory. Nested attribute
directories are shown as dictionaries, so the view provides a deep copy
the attribute (sub-)hierarchy.
"""
def __repr__(self):
return "%s(%s)" % (type(self).__name__, dict(self).__repr__())
def keys(self):
return list(self)
def __getitem__(self, key):
#this import here is needed due to circular dependency
#with _kdumpfile
from _kdumpfile import attr_dir
val = self.dir[key]
if isinstance(val, attr_dir):
return val.copy()
else:
return val
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