X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbook.h;h=740ef74992562f3d7b6399096d3357124604903c;hp=ee3f5c5a7a3a3a7b7c87a6ddc6de8088c69963f3;hb=2155fb78256204aae5aa80946dfe7d8d9c6e2397;hpb=bb751d6c890f5c50c642366d601740366cfae8d0

diff --git a/src/book.h b/src/book.h
index ee3f5c5a..740ef749 100644
--- a/src/book.h
+++ b/src/book.h
@@ -1,17 +1,18 @@
 /*
-  Glaurung, a UCI chess playing engine.
-  Copyright (C) 2004-2008 Tord Romstad
+  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+  Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+  Copyright (C) 2008 Marco Costalba
 
-  Glaurung is free software: you can redistribute it and/or modify
+  Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
-  Glaurung is distributed in the hope that it will be useful,
+
+  Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -32,6 +33,7 @@
 //// Includes
 ////
 
+#include <fstream>
 #include <string>
 
 #include "move.h"
@@ -50,31 +52,24 @@ struct BookEntry {
   uint16_t sum;
 };
 
-class Book {
-
+class Book : private std::ifstream {
 public:
-  // Constructors
-  Book();
-
-  // Open and close book files
-  void open(const std::string &fName);
+  ~Book();
+  void open(const std::string& fName);
   void close();
-
-  // Testing if a book is opened
-  bool is_open() const;
-
-  // The file name of the currently active book
   const std::string file_name() const;
-
-  // Get a book move for a given position
-  Move get_move(const Position &pos) const;
+  Move get_move(const Position& pos);
 
 private:
-  int find_key(uint64_t key) const;
-  void read_entry(BookEntry &entry, int n) const;
+  Book& operator>>(uint64_t& n) { n = read_integer(8); return *this; }
+  Book& operator>>(uint16_t& n) { n = (uint16_t)read_integer(2); return *this; }
+  void operator>>(BookEntry& e) { *this >> e.key >> e.move >> e.count >> e.n >> e.sum; }
+
+  uint64_t read_integer(int size);
+  void read_entry(BookEntry& e, int n);
+  int find_key(uint64_t key);
 
   std::string fileName;
-  FILE *bookFile;
   int bookSize;
 };