libsaria: Actually add libsaria.sources.attrs

I forgot to add this file a few commits ago... oops...

libsaria/sources/attrs.py

@@ -0,0 +1,47 @@
+# Bryan Schumaker (5 / 28 / 2011)
+
+import threading
+from libsaria import storage
+dattrs_lock   = threading.Lock()
+lock_dattrs   = dattrs_lock.acquire
+unlock_dattrs = dattrs_lock.release
+
+# dynamic attributes
+dattrs = dict()
+
+def load_dattrs():
+	global dattrs
+	dattrs_dict = storage.load_obj("dattrs", dict)
+	lock_dattrs()
+	dattrs = dattrs_dict
+	unlock_dattrs()
+
+def save_dattrs():
+	storage.save_obj("dattrs", dattrs)
+
+def get_dattr(id, attribute):
+	lock_dattrs()
+	attrs = dattrs.get(id, None)
+	if attrs == None:
+		unlock_dattrs()
+		return None
+	attr = attrs.get(attribute, None)
+	unlock_dattrs()
+	return attr
+
+def set_dattr(id, attribute, value):
+	lock_dattrs()
+	attrs = dattrs.setdefault(id, dict())
+	attrs[attribute] = value
+	save_dattrs()
+	unlock_dattrs()
+
+def get_count(id):
+	count = get_dattr(id, "count")
+	if count != None:
+		return count
+	return 0
+
+def inc_count(id):
+	count = get_count(id)
+	set_dattr(id, "count", count + 1)