def post_csv(self,bg=0,br=1):
user = self.request.user
POST = self.request.POST
if 'dat' in POST:
a = array.array(UNSIGNED_ITEM_TYPES[1])
dat = map(int,POST['dat'].split(','))
a.fromlist([bg,br])
a.fromlist(dat)
astring = a.tostring()
cl = Classification("%s:%s"%(user.username,hashlib.md5(astring).hexdigest()))
cl.tileset = self.ts.key_name
cl.dat = zlib.compress(astring)
cl.N = len(a)
assert (cl.N-2) == self.ts.numregions
cl.n = max(a)+1
cl.owner = user.username
cl.public = True
cl.expires = False
cl.date = time.mktime(time.gmtime())
return cl.put()
