+ if (!args.empty())
+ cmd = args;
+
+ else if (!getline(cin, cmd)) // Block here waiting for input
+ cmd = "quit";
+
+ istringstream is(cmd);
+
+ is >> skipws >> token;
+
+ if (token == "quit" || token == "stop")
+ {
+ Search::Signals.stop = true;
+ Threads.wait_for_search_finished(); // Cannot quit while threads are running
+ }
+
+ else if (token == "ponderhit")
+ {
+ // The opponent has played the expected move. GUI sends "ponderhit" if
+ // we were told to ponder on the same move the opponent has played. We
+ // should continue searching but switching from pondering to normal search.
+ Search::Limits.ponder = false;
+
+ if (Search::Signals.stopOnPonderhit)
+ {
+ Search::Signals.stop = true;
+ Threads.main_thread()->wake_up(); // Could be sleeping
+ }
+ }
+
+ else if (token == "perft" && (is >> token)) // Read requested depth
+ {
+ stringstream ss;
+
+ ss << Options["Hash"] << " "
+ << Options["Threads"] << " " << token << " current perft";
+
+ benchmark(pos, ss);
+ }
+
+ else if (token == "key") sync_cout << "position key: " << hex << pos.key()
+ << "\nmaterial key: " << pos.material_key()
+ << "\npawn key: " << pos.pawn_key()
+ << sync_endl;
+
+ else if (token == "uci") sync_cout << "id name " << engine_info(true)
+ << "\n" << Options
+ << "\nuciok" << sync_endl;
+
+ else if (token == "ucinewgame") TT.clear();
+ else if (token == "go") go(pos, is);
+ else if (token == "position") set_position(pos, is);
+ else if (token == "setoption") set_option(is);
+ else if (token == "d") pos.print();
+ else if (token == "flip") pos.flip();
+ else if (token == "bench") benchmark(pos, is);
+ else if (token == "isready") sync_cout << "readyok" << sync_endl;
+ else if (token == "eval") sync_cout << Eval::trace(pos) << sync_endl;
+ else
+ sync_cout << "Unknown command: " << cmd << sync_endl;
+
+ if (!args.empty()) // Command line arguments have one-shot behaviour
+ {
+ Threads.wait_for_search_finished();
+ break;
+ }