Function argparse_withargs

src/tools/crushtool.cc:273–306

template<typename... Args>
bool argparse_withargs(std::vector<const char*> &args,
		       std::vector<const char*>::iterator& i,
		       std::ostream& oss,
		       const char* opt,
		       Args*... opts)
{
  if (!ceph_argparse_flag(args, i, opt, nullptr)) {
    return false;
  }
  auto parse = [&](auto& opt) {
    if (i == args.end()) {
      oss << "expecting additional argument to " << opt;
      return false;
    }
    using opt_t = std::remove_pointer_t<decay_t<decltype(opt)>>;
    string err;
    if constexpr (std::is_same_v<opt_t, string>) {
      opt->assign(*i);
    } else if constexpr (is_same_v<opt_t, int>) {
      *opt = strict_strtol(*i, 10, &err);
    } else if constexpr (is_same_v<opt_t, float>) {
      *opt = strict_strtof(*i, &err);
    }
    i = args.erase(i);
    if (err.empty())
      return true;
    else {
      oss << err;
      return false;
    }
  };
  (... && parse(opts));
  return true;
}

int do_add_bucket(CephContext* cct,
		  const char* me,