79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
# Copyright (C) 2007, Red Hat, Inc.
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# Copyright (C) 2007, Collabora Ltd.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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from sugar import env
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from sugar import util
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import os.path
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import cPickle
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class BuddyIconCache(object):
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"""Caches icons on disk and finds them based on the jid of their owners."""
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def __init__(self):
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ppath = env.get_profile_path()
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self._cachepath = os.path.join(ppath, "cache", "buddy-icons", "cache")
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if not os.path.exists(self._cachepath):
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self._cache = {}
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else:
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self._load_cache()
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def _load_cache(self):
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try:
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self._cache = cPickle.load(open(self._cachepath, "r"))
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except:
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self._cache = {}
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def _save_cache(self):
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out = open(self._cachepath, "w")
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cPickle.dump(self._cache, out, protocol=2)
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def get_icon(self, jid, token):
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hit = self._cache.get(jid)
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if hit:
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t, icon = hit[0], hit[1]
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if t == token:
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return icon
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return None
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def store_icon(self, jid, token, data):
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self._cache[jid] = (token, data)
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self._save_cache()
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if __name__ == "__main__":
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my_cache = BuddyIconCache()
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# look for the icon in the cache
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icon = my_cache.get_icon("test@olpc.collabora.co.uk", "aaaa")
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print icon
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my_cache.store_icon("test@olpc.collabora.co.uk", "aaaa", "icon1")
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# now we're sure that the icon is in the cache
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icon = my_cache.get_icon("test@olpc.collabora.co.uk", "aaaa")
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print icon
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# new icon
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my_cache.store_icon("test@olpc.collabora.co.uk", "bbbb", "icon2")
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# the icon in the cache is not valid now
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icon = my_cache.get_icon("test@olpc.collabora.co.uk", "aaaa")
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print icon
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