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