void unsubscribeCommand(redisClient *c) {
if (c->argc == 1) {
pubsubUnsubscribeAllChannels(c,1);
} else {
int j;
for (j = 1; j < c->argc; j++)
pubsubUnsubscribeChannel(c,c->argv[j],1);
}
if (clientSubscriptionsCount(c) == 0) c->flags &= ~REDIS_PUBSUB;
}
/* Unsubscribe from all the channels. Return the number of channels the
* client was subscribed from. */
int pubsubUnsubscribeAllChannels(redisClient *c, int notify) {
dictIterator *di = dictGetSafeIterator(c->pubsub_channels);
dictEntry *de;
int count = 0;
while((de = dictNext(di)) != NULL) {
robj *channel = dictGetKey(de);
count += pubsubUnsubscribeChannel(c,channel,notify);
}
dictReleaseIterator(di);
return count;
}
/* Unsubscribe from all the channels. Return the number of channels the
* client was subscribed from. */
int pubsubUnsubscribeAllChannels(redisClient *c, int notify) {
dictIterator *di = dictGetSafeIterator(c->pubsub_channels);
dictEntry *de;
int count = 0;
while((de = dictNext(di)) != NULL) {
robj *channel = dictGetKey(de);
count += pubsubUnsubscribeChannel(c,channel,notify);
}
/* We were subscribed to nothing? Still reply to the client. */
if (notify && count == 0) {
addReply(c,shared.mbulkhdr[3]);
addReply(c,shared.unsubscribebulk);
addReply(c,shared.nullbulk);
addReplyLongLong(c,dictSize(c->pubsub_channels)+
listLength(c->pubsub_patterns));
}
dictReleaseIterator(di);
return count;
}
