Function sendScan

app/redis-6.2.6/src/redis-cli.c:7452–7484

 *--------------------------------------------------------------------------- */

static redisReply *sendScan(unsigned long long *it) {
    redisReply *reply;

    if (config.pattern)
        reply = redisCommand(context, "SCAN %llu MATCH %b",
            *it, config.pattern, sdslen(config.pattern));
    else
        reply = redisCommand(context,"SCAN %llu",*it);

    /* Handle any error conditions */
    if(reply == NULL) {
        fprintf(stderr, "\nI/O error\n");
        exit(1);
    } else if(reply->type == REDIS_REPLY_ERROR) {
        fprintf(stderr, "SCAN error: %s\n", reply->str);
        exit(1);
    } else if(reply->type != REDIS_REPLY_ARRAY) {
        fprintf(stderr, "Non ARRAY response from SCAN!\n");
        exit(1);
    } else if(reply->elements != 2) {
        fprintf(stderr, "Invalid element count from SCAN!\n");
        exit(1);
    }

    /* Validate our types are correct */
    assert(reply->element[0]->type == REDIS_REPLY_STRING);
    assert(reply->element[1]->type == REDIS_REPLY_ARRAY);

    /* Update iterator */
    *it = strtoull(reply->element[0]->str, NULL, 10);

    return reply;
}

static int getDbSize(void) {
    redisReply *reply;