Socket::Ifaddr#inspect

static VALUE
ifaddr_inspect(VALUE self)
{
    struct ifaddrs *ifa = get_ifaddrs(self);
    VALUE result;

    result = rb_str_new_cstr("#<");

    rb_str_append(result, rb_class_name(CLASS_OF(self)));
    rb_str_cat2(result, " ");
    rb_str_cat2(result, ifa->ifa_name);

    if (ifa->ifa_flags)
        ifaddr_inspect_flags(ifa->ifa_flags, result);

    if (ifa->ifa_addr) {
      rb_str_cat2(result, " ");
      rsock_inspect_sockaddr(ifa->ifa_addr,
          rsock_sockaddr_len(ifa->ifa_addr),
          result);
    }
    if (ifa->ifa_netmask) {
      rb_str_cat2(result, " netmask=");
      rsock_inspect_sockaddr(ifa->ifa_netmask,
          rsock_sockaddr_len(ifa->ifa_netmask),
          result);
    }

    if ((ifa->ifa_flags & IFF_BROADCAST) && ifa->ifa_broadaddr) {
      rb_str_cat2(result, " broadcast=");
      rsock_inspect_sockaddr(ifa->ifa_broadaddr,
          rsock_sockaddr_len(ifa->ifa_broadaddr),
          result);
    }

    if ((ifa->ifa_flags & IFF_POINTOPOINT) && ifa->ifa_dstaddr) {
      rb_str_cat2(result, " dstaddr=");
      rsock_inspect_sockaddr(ifa->ifa_dstaddr,
          rsock_sockaddr_len(ifa->ifa_dstaddr),
          result);
    }

    rb_str_cat2(result, ">");
    return result;
}