static int parseOptions(int argc, char **argv) {
    int i;

    for (i = 1; i < argc; i++) {
        int lastarg = i==argc-1;

        if (!strcmp(argv[i],"-h") && !lastarg) {
            sdsfree(config.hostip);
            config.hostip = sdsnew(argv[++i]);
        } else if (!strcmp(argv[i],"-h") && lastarg) {
            usage();
        } else if (!strcmp(argv[i],"--help")) {
            usage();
        } else if (!strcmp(argv[i],"-x")) {
            config.stdinarg = 1;
        } else if (!strcmp(argv[i],"-p") && !lastarg) {
            config.hostport = atoi(argv[++i]);
        } else if (!strcmp(argv[i],"-s") && !lastarg) {
            config.hostsocket = argv[++i];
        } else if (!strcmp(argv[i],"-r") && !lastarg) {
            config.repeat = strtoll(argv[++i],NULL,10);
        } else if (!strcmp(argv[i],"-i") && !lastarg) {
            double seconds = atof(argv[++i]);
            config.interval = seconds*1000000;
        } else if (!strcmp(argv[i],"-n") && !lastarg) {
            config.dbnum = atoi(argv[++i]);
        } else if (!strcmp(argv[i],"-a") && !lastarg) {
            fputs("Warning: Using a password with '-a' option on the command line interface may not be safe.\n", stderr);
            config.auth = argv[++i];
        } else if (!strcmp(argv[i],"-u") && !lastarg) {
            parseRedisUri(argv[++i]);
        } else if (!strcmp(argv[i],"--raw")) {
            config.output = OUTPUT_RAW;
        } else if (!strcmp(argv[i],"--no-raw")) {
            config.output = OUTPUT_STANDARD;
        } else if (!strcmp(argv[i],"--csv")) {
            config.output = OUTPUT_CSV;
        } else if (!strcmp(argv[i],"--latency")) {
            config.latency_mode = 1;
        } else if (!strcmp(argv[i],"--latency-dist")) {
            config.latency_dist_mode = 1;
        } else if (!strcmp(argv[i],"--mono")) {
            spectrum_palette = spectrum_palette_mono;
            spectrum_palette_size = spectrum_palette_mono_size;
        } else if (!strcmp(argv[i],"--latency-history")) {
            config.latency_mode = 1;
            config.latency_history = 1;
        } else if (!strcmp(argv[i],"--lru-test") && !lastarg) {
            config.lru_test_mode = 1;
            config.lru_test_sample_size = strtoll(argv[++i],NULL,10);
        } else if (!strcmp(argv[i],"--slave")) {
            config.slave_mode = 1;
        } else if (!strcmp(argv[i],"--stat")) {
            config.stat_mode = 1;
        } else if (!strcmp(argv[i],"--scan")) {
            config.scan_mode = 1;
        } else if (!strcmp(argv[i],"--pattern") && !lastarg) {
            config.pattern = argv[++i];
        } else if (!strcmp(argv[i],"--intrinsic-latency") && !lastarg) {
            config.intrinsic_latency_mode = 1;
            config.intrinsic_latency_duration = atoi(argv[++i]);
        } else if (!strcmp(argv[i],"--rdb") && !lastarg) {
            config.getrdb_mode = 1;
            config.rdb_filename = argv[++i];
        } else if (!strcmp(argv[i],"--pipe")) {
            config.pipe_mode = 1;
        } else if (!strcmp(argv[i],"--pipe-timeout") && !lastarg) {
            config.pipe_timeout = atoi(argv[++i]);
        } else if (!strcmp(argv[i],"--bigkeys")) {
            config.bigkeys = 1;
        } else if (!strcmp(argv[i],"--hotkeys")) {
            config.hotkeys = 1;
        } else if (!strcmp(argv[i],"--eval") && !lastarg) {
            config.eval = argv[++i];
        } else if (!strcmp(argv[i],"--ldb")) {
            config.eval_ldb = 1;
            config.output = OUTPUT_RAW;
        } else if (!strcmp(argv[i],"--ldb-sync-mode")) {
            config.eval_ldb = 1;
            config.eval_ldb_sync = 1;
            config.output = OUTPUT_RAW;
        } else if (!strcmp(argv[i],"-c")) {
            config.cluster_mode = 1;
        } else if (!strcmp(argv[i],"-d") && !lastarg) {
            sdsfree(config.mb_delim);
            config.mb_delim = sdsnew(argv[++i]);
        } else if (!strcmp(argv[i],"-v") || !strcmp(argv[i], "--version")) {
            sds version = cliVersion();
            printf("redis-cli %s\n", version);
            sdsfree(version);
            exit(0);
        } else {
            if (argv[i][0] == '-') {
                fprintf(stderr,
                    "Unrecognized option or bad number of args for: '%s'\n",
                    argv[i]);
                exit(1);
            } else {
                /* Likely the command name, stop here. */
                break;
            }
        }
    }

    /* --ldb requires --eval. */
    if (config.eval_ldb && config.eval == NULL) {
        fprintf(stderr,"Options --ldb and --ldb-sync-mode require --eval.\n");
        fprintf(stderr,"Try %s --help for more information.\n", argv[0]);
        exit(1);
    }
    return i;
}