/usr/share/pyshared/Pyblosxom/memcache.py is in pyblosxom 1.5.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# This file is part of Pyblosxom.
#
# Copyright (C) 2003-2011 by the Pyblosxom team. See AUTHORS.
#
# Pyblosxom is distributed under the MIT license. See the file
# LICENSE for distribution details.
#######################################################################
"""Holds memcache functions.
"""
# Whether or not to use memcache.
usecache = False
_memcache_cache = {}
def memcache_decorator(scope, instance=False):
"""Caches function results in memory
This is a pretty classic memoization system for plugins. There's
no expiration of cached data---it just hangs out in memory
forever.
This is great for static rendering, but probably not for running
as a CGI/WSGI application.
This is disabled by default. It must be explicitly enabled
to have effect.
Some notes:
1. the function arguments MUST be hashable--no dicts, lists, etc.
2. this probably does not play well with
non-static-rendering--that should get checked.
3. TODO: the two arguments are poorly named--that should get fixed.
:arg scope: string defining the scope. e.g. 'pycategories'.
:arg instance: whether or not the function being decorated is
bound to an instance (i.e. is the first argument "self" or
"cls"?)
"""
def _memcache(fun):
def _memcache_decorated(*args, **kwargs):
if not usecache:
return fun(*args, **kwargs)
try:
if instance:
hash_key = hash((args[1:], frozenset(sorted(kwargs.items()))))
else:
hash_key = hash((args, frozenset(sorted(kwargs.items()))))
except TypeError:
print repr((args, kwargs))
hash_key = None
if not hash_key:
return fun(*args, **kwargs)
try:
ret = _memcache_cache.setdefault(scope, {})[hash_key]
except KeyError:
ret = fun(*args, **kwargs)
_memcache_cache[scope][hash_key] = ret
return ret
return _memcache_decorated
return _memcache
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