add pgn-extract 22.11

pgn-extract/eco.h

@@ -0,0 +1,51 @@
+/*
+ *  This file is part of pgn-extract: a Portable Game Notation (PGN) extractor.
+ *  Copyright (C) 1994-2022 David J. Barnes
+ *
+ *  pgn-extract 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.
+ *
+ *  pgn-extract 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 pgn-extract. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  David J. Barnes may be contacted as d.j.barnes@kent.ac.uk
+ *  https://www.cs.kent.ac.uk/people/staff/djb/
+ */
+
+        /* Define a type to hold hash values of interest. */
+#ifndef ECO_H
+#define ECO_H
+
+typedef struct EcoLog {
+    HashCode required_hash_value;
+    /* cumulative_hash_value is used to disambiguate clashing
+     * final hash values in duplicate detection.
+     */
+    HashCode cumulative_hash_value;
+    /* How deep the line is, from the half_moves associated with
+     * the board when the line is played out.
+     */
+    unsigned half_moves;
+    const char *ECO_tag;
+    const char *Opening_tag;
+    const char *Variation_tag;
+    const char *Sub_Variation_tag;
+    struct EcoLog *next;
+} EcoLog;
+
+EcoLog *eco_matches(const Board *board, HashCode cumulative_hash_value,
+                    unsigned half_moves_played);
+Boolean add_ECO(Game game_details);
+FILE *open_eco_output_file(EcoDivision ECO_level,const char *eco);
+void initEcoTable(void);
+void save_eco_details(const Game *game_details, const Board *final_position, unsigned number_of_moves);
+
+#endif	// ECO_H
+