Print leading zeroes in hash keys

[stockfish] / src / uci.cpp

diff --git a/src/uci.cpp b/src/uci.cpp
index 5721e93f7390acf3393361d066e87786354864fd..c8f504463cef969db7a72c9816d3c23fd6f18b94 100644 (file)
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -17,6 +17,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <iomanip>
 #include <iostream>
 #include <sstream>
 #include <string>
@@ -44,7 +45,7 @@ namespace {
 
   void set_option(istringstream& up);
   void set_position(Position& pos, istringstream& up);
-  void go(Position& pos, istringstream& up);
+  void go(const Position& pos, istringstream& up);
 }
 
 
@@ -90,14 +91,17 @@ void UCI::loop(const string& args) {
 
           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 == "key")
+          sync_cout << hex << uppercase << setfill('0')
+                    << "position key: "   << setw(16) << pos.key()
+                    << "\nmaterial key: " << setw(16) << pos.material_key()
+                    << "\npawn key:     " << setw(16) << pos.pawn_key()
+                    << dec << 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);
@@ -182,7 +186,7 @@ namespace {
   // the thinking time and other parameters from the input string, and starts
   // the search.
 
-  void go(Position& pos, istringstream& is) {
+  void go(const Position& pos, istringstream& is) {
 
     Search::LimitsType limits;
     vector<Move> searchMoves;