/*
- 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) 2008-2009 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/>.
*/
//// Includes
////
+#include <fstream>
#include <string>
#include "move.h"
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;
};