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"""
This is a convenience wrapper for dictionaries
returned from LDAP servers containing attribute
names of variable case.
See http://www.python-ldap.org/ for details.
$Id: cidict.py,v 1.13 2009/04/17 14:34:34 stroeder Exp $
"""
__version__ = """$Revision: 1.13 $"""
from UserDict import UserDict
from string import lower
class cidict(UserDict):
"""
Case-insensitive but case-respecting dictionary.
"""
def __init__(self,default=None):
self._keys = {}
UserDict.__init__(self,{})
self.update(default or {})
def __getitem__(self,key):
return self.data[lower(key)]
def __setitem__(self,key,value):
lower_key = lower(key)
self._keys[lower_key] = key
self.data[lower_key] = value
def __delitem__(self,key):
lower_key = lower(key)
del self._keys[lower_key]
del self.data[lower_key]
def update(self,dict):
for key in dict.keys():
self[key] = dict[key]
def has_key(self,key):
return UserDict.has_key(self,lower(key))
def __contains__(self,key):
return self.has_key(key)
def get(self,key,failobj=None):
try:
return self[key]
except KeyError:
return failobj
def keys(self):
return self._keys.values()
def items(self):
result = []
for k in self._keys.values():
result.append((k,self[k]))
return result
def strlist_minus(a,b):
"""
Return list of all items in a which are not in b (a - b).
a,b are supposed to be lists of case-insensitive strings.
"""
temp = cidict()
for elt in b:
temp[elt] = elt
result = [
elt
for elt in a
if not temp.has_key(elt)
]
return result
def strlist_intersection(a,b):
"""
Return intersection of two lists of case-insensitive strings a,b.
"""
temp = cidict()
for elt in a:
temp[elt] = elt
result = [
temp[elt]
for elt in b
if temp.has_key(elt)
]
return result
def strlist_union(a,b):
"""
Return union of two lists of case-insensitive strings a,b.
"""
temp = cidict()
for elt in a:
temp[elt] = elt
for elt in b:
temp[elt] = elt
return temp.values()
if __debug__ and __name__ == '__main__':
x = { 'AbCDeF' : 123 }
cix = cidict(x)
assert cix["ABCDEF"] == 123
assert cix.get("ABCDEF",None) == 123
assert cix.get("not existent",None) is None
cix["xYZ"] = 987
assert cix["XyZ"] == 987
assert cix.get("XyZ",None) == 987
cix_keys = cix.keys()
cix_keys.sort()
assert cix_keys==['AbCDeF','xYZ'],ValueError(repr(cix_keys))
cix_items = cix.items()
cix_items.sort()
assert cix_items==[('AbCDeF',123),('xYZ',987)],ValueError(repr(cix_items))
del cix["abcdEF"]
assert not cix._keys.has_key("abcdef")
assert not cix.has_key("AbCDef")