Function keysCommand

app/redis-6.2.6/src/db.c:749–774

}

void keysCommand(client *c) {
    dictIterator *di;
    dictEntry *de;
    sds pattern = c->argv[1]->ptr;
    int plen = sdslen(pattern), allkeys;
    unsigned long numkeys = 0;
    void *replylen = addReplyDeferredLen(c);

    di = dictGetSafeIterator(c->db->dict);
    allkeys = (pattern[0] == '*' && plen == 1);
    while((de = dictNext(di)) != NULL) {
        sds key = dictGetKey(de);
        robj *keyobj;

        if (allkeys || stringmatchlen(pattern,plen,key,sdslen(key),0)) {
            keyobj = createStringObject(key,sdslen(key));
            if (!keyIsExpired(c->db,keyobj)) {
                addReplyBulk(c,keyobj);
                numkeys++;
            }
            decrRefCount(keyobj);
        }
    }
    dictReleaseIterator(di);
    setDeferredArrayLen(c,replylen,numkeys);
}

/* This callback is used by scanGenericCommand in order to collect elements
 * returned by the dictionary iterator into a list. */