mirror of https://github.com/borgbackup/borg.git
43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
class LRUCache(dict):
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def __init__(self, capacity):
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super(LRUCache, self).__init__()
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self._lru = []
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self._capacity = capacity
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def __setitem__(self, key, value):
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try:
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self._lru.remove(key)
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except ValueError:
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pass
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self._lru.append(key)
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while len(self._lru) > self._capacity:
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del self[self._lru[0]]
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return super(LRUCache, self).__setitem__(key, value)
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def __getitem__(self, key):
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try:
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self._lru.remove(key)
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self._lru.append(key)
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except ValueError:
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pass
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return super(LRUCache, self).__getitem__(key)
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def __delitem__(self, key):
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try:
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self._lru.remove(key)
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except ValueError:
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pass
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return super(LRUCache, self).__delitem__(key)
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def pop(self, key, default=None):
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try:
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self._lru.remove(key)
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except ValueError:
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pass
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return super(LRUCache, self).pop(key, default)
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def _not_implemented(self, *args, **kw):
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raise NotImplementedError
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popitem = setdefault = update = _not_implemented
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