!7

static S ip = "tinybrain.de" /*"127.0.0.1"*/;
static int count = 1;
static boolean result;

p {
  // Java has trouble executing pings, so we use the native command.
  
  S cmd = "ping " + (isWindows() ? "-n" : "-c") + " " + count + " " + ip;
  S output = backtick(cmd);
  print(output);
  
  new Matches m;
  if (isWindows()) {
    if (jfind3("reply from *.*.*.*: bytes=* time=* ms ttl=*", output.toLowerCase(), m)) {
      S ip = m.unq(0) + "." + m.unq(1) + "." + m.unq(2) + "." + m.unq(3);
      S ttl = m.unq(6), time = m.unq(5);
      print("Reachable. IP " + ip + " TTL " + ttl + " TIME " + time);
    } else
      print("Not reachable.");
  } else {
    if (jfind3("(*.*.*.*): *=* ttl=* time=*", output.toLowerCase(), m)) {
      S ip = m.unq(0) + "." + m.unq(1) + "." + m.unq(2) + "." + m.unq(3);
      S ttl = m.unq(6), time = m.unq(7);
      print("Reachable. IP " + ip + " TTL " + ttl + " TIME " + time);
    } else
      print("Not reachable.");
  }
}

static boolean jfind3(S pat, S s, Matches matches) {
  if (s == null) return false;
  ret jfind3(pat, javaTok(s), matches);
}

static boolean jfind3(S pat, L<S> toks, Matches matches) {
  L<S> tokpat = javaTok(pat);
  S[] m = jfind2(tokpat, toks);
  //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
  if (m == null)
    ret false;
  else {
    if (matches != null) matches.m = m;
    ret true;
  }
}

static S[] jfind2(L<S> pat, L<S> tok) {
  for (int idx = 0; idx < tok.size(); idx += 2) {
    S[] result = jfind2(pat, tok, idx);
    if (result != null) return result;
  }
  return null;
}

static S[] jfind2(L<S> pat, L<S> tok, int idx) {
  if (idx+pat.size() > tok.size())
    return null;
  new L<S> result;
  for (int i = 1; i < pat.size(); i += 2) {
    S p = pat.get(i), t = tok.get(idx+i);
    if (eq(p, "*"))
      result.add(t);
    else if (!eq(p, t))
      return null;
  }
  return toStringArray(result);
}