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## Amazon S3 manager
## Author: Michal Ludvig <michal@logix.cz>
## http://www.logix.cz/michal
## License: GPL Version 2
from BidirMap import BidirMap
import Utils
class SortedDictIterator(object):
def __init__(self, sorted_dict, keys):
self.sorted_dict = sorted_dict
self.keys = keys
def next(self):
try:
return self.keys.pop(0)
except IndexError:
raise StopIteration
class SortedDict(dict):
def __init__(self, mapping = {}, ignore_case = True, **kwargs):
"""
WARNING: SortedDict() with ignore_case==True will
drop entries differing only in capitalisation!
Eg: SortedDict({'auckland':1, 'Auckland':2}).keys() => ['Auckland']
With ignore_case==False it's all right
"""
dict.__init__(self, mapping, **kwargs)
self.ignore_case = ignore_case
def keys(self):
keys = dict.keys(self)
if self.ignore_case:
# Translation map
xlat_map = BidirMap()
for key in keys:
xlat_map[key.lower()] = key
# Lowercase keys
lc_keys = xlat_map.keys()
lc_keys.sort()
return [xlat_map[k] for k in lc_keys]
else:
keys.sort()
return keys
def __iter__(self):
return SortedDictIterator(self, self.keys())
if __name__ == "__main__":
d = { 'AWS' : 1, 'Action' : 2, 'america' : 3, 'Auckland' : 4, 'America' : 5 }
sd = SortedDict(d)
print "Wanted: Action, america, Auckland, AWS, [ignore case]"
print "Got: ",
for key in sd:
print "%s," % key,
print " [used: __iter__()]"
d = SortedDict(d, ignore_case = False)
print "Wanted: AWS, Action, Auckland, america, [case sensitive]"
print "Got: ",
for key in d.keys():
print "%s," % key,
print " [used: keys()]"
# vim:et:ts=4:sts=4:ai