Add board to fen function

binding/python_c_ffi.py

@@ -62,6 +62,8 @@ FFI_SPEC = {
     "load_fen": ((C.POINTER(Board), C.c_char_p), C.c_int),
     "gen_pseudo_moves": ((C.POINTER(Board), C.POINTER(Move), C.c_bool), C.c_int),
     "apply_move_on_copy": ((C.POINTER(Board), C.POINTER(Board), Move), C.c_bool),
+    "board_to_fen": ((C.POINTER(Board), C.c_char_p, C.c_size_t), None),
+    
     # AI Methods
     "ai_find_best_move_with_window": ((C.POINTER(Board), C.c_int, C.c_int, C.POINTER(Move)), C.c_int)
 }
@@ -151,7 +153,13 @@ class ChessFFI:
     
     def load_fen(self, board, fen_string):
         return self._c_load_fen(board, fen_string.encode("ascii"))
-            
+    
+
+    def board_to_fen(self, board, size=256):
+        buf = C.create_string_buffer(size)
+        self._c_board_to_fen(board, buf, size)
+        return buf.value.decode("ascii")
+
 
     def gen_pseudo_moves(self, board, captures_only=False, cap=256):
         buf = (Move * cap)()