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# -*- coding: latin-1 -*-
class CaselessDict(dict):
"""
A dictionary that isn't case sensitive, and only use string as keys.
>>> ncd = CaselessDict(key1='val1', key2='val2')
>>> ncd
CaselessDict({'KEY2': 'val2', 'KEY1': 'val1'})
>>> ncd['key1']
'val1'
>>> ncd['KEY1']
'val1'
>>> ncd['KEY3'] = 'val3'
>>> ncd['key3']
'val3'
>>> ncd.setdefault('key3', 'FOUND')
'val3'
>>> ncd.setdefault('key4', 'NOT FOUND')
'NOT FOUND'
>>> ncd['key4']
'NOT FOUND'
>>> ncd.get('key1')
'val1'
>>> ncd.get('key3', 'NOT FOUND')
'val3'
>>> ncd.get('key4', 'NOT FOUND')
'NOT FOUND'
>>> 'key4' in ncd
True
>>> del ncd['key4']
>>> ncd.has_key('key4')
False
>>> ncd.update({'key5':'val5', 'KEY6':'val6', 'KEY5':'val7'})
>>> ncd['key6']
'val6'
>>> keys = ncd.keys()
>>> keys.sort()
>>> keys
['KEY1', 'KEY2', 'KEY3', 'KEY5', 'KEY6']
"""
def __init__(self, *args, **kwargs):
"Set keys to upper for initial dict"
dict.__init__(self, *args, **kwargs)
for k,v in self.items():
k_upper = k.upper()
if k != k_upper:
dict.__delitem__(self, k)
self[k_upper] = v
def __getitem__(self, key):
return dict.__getitem__(self, key.upper())
def __setitem__(self, key, value):
dict.__setitem__(self, key.upper(), value)
def __delitem__(self, key):
dict.__delitem__(self, key.upper())
def __contains__(self, item):
return dict.__contains__(self, item.upper())
def get(self, key, default=None):
return dict.get(self, key.upper(), default)
def setdefault(self, key, value=None):
return dict.setdefault(self, key.upper(), value)
def pop(self, key, default=None):
return dict.pop(self, key.upper(), default)
def popitem(self):
return dict.popitem(self)
def has_key(self, key):
return dict.has_key(self, key.upper())
def update(self, indict):
"""
Multiple keys where key1.upper() == key2.upper() will be lost.
"""
for entry in indict:
self[entry] = indict[entry]
def copy(self):
return CaselessDict(dict.copy(self))
def clear(self):
dict.clear(self)
def __repr__(self):
return 'CaselessDict(' + dict.__repr__(self) + ')'