Regularly check for user input when searching, to have a chance to catch EOF from...

[gnushogi.git] / gnushogi / commondsp.c

diff --git a/gnushogi/commondsp.c b/gnushogi/commondsp.c
index 56afbe6..1f39b78 100644 (file)
--- a/gnushogi/commondsp.c
+++ b/gnushogi/commondsp.c
@@ -4,11 +4,14 @@
  *     Common display routines for GNU Shogi.
  *
  * ----------------------------------------------------------------------
- *
- * Copyright (c) 2012 Free Software Foundation
+ * Copyright (c) 1993, 1994, 1995 Matthias Mutz
+ * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
  *
  * GNU SHOGI is based on GNU CHESS
  *
+ * Copyright (c) 1988, 1989, 1990 John Stanback
+ * Copyright (c) 1992 Free Software Foundation
+ *
  * This file is part of GNU SHOGI.
  *
  * GNU Shogi is free software; you can redistribute it and/or modify it
@@ -125,6 +128,17 @@ movealgbr(short m, char *s)
 
 /*
  * Generate move strings in different formats.
+ *
+ * INPUT:
+ * - f                                 piece to be moved
+ *   - 0 < f < NO_SQUARES                              source square
+ *   - NO_SQUARES <= f NO_SQUARES + 2*NO_PIECES                dropped piece modulo NO_PIECES
+ * - t & 0x7f                          target square
+ * - t & 0x80                          promotion flag
+ * - flag                              FIXME: must be zero ?
+ *
+ * OUTPUT:
+ * - GLOBAL mvstr
  */
 
 void
@@ -1731,8 +1745,8 @@ InputCommand(char *command)
             {
                 s[0] = sx[0] = '\0';
 
-                while(!sx[0])
-                    (void)fgets(sx, 80, stdin);
+                while(!eof && !sx[0])
+                    eof = (fgets(sx, 80, stdin) == NULL);
             }
             else
             {
@@ -2148,7 +2162,7 @@ InputCommand(char *command)
 #endif
     }
 
-    signal(SIGUSR1, TerminateSearch);
+    signal(SIGINT, TerminateSearch);
 }