Function dist_cli_need_arg

ds4_distributed.c:8078–8090

    if (!dist_parse_u32_component(s, (size_t)(colon - s), &parsed.start)) {
        if (errlen) snprintf(err, errlen, "invalid start layer in %s", s);
        return false;
    }

    const char *end = colon + 1;
    if (!strcmp(end, "output")) {
        parsed.end = UINT32_MAX;
        parsed.has_output = true;
    } else {
        if (!dist_parse_u32_component(end, strlen(end), &parsed.end)) {
            if (errlen) snprintf(err, errlen, "invalid end layer in %s", s);
            return false;
        }
        if (parsed.end < parsed.start) {
            if (errlen) snprintf(err, errlen, "layer range end precedes start in %s", s);
            return false;
        }