Modified function heads & prototypes.

[yaz-moved-to-github.git] / odr / odr_choice.c

diff --git a/odr/odr_choice.c b/odr/odr_choice.c
index 1c5d1af..945e4fe 100644 (file)
--- a/odr/odr_choice.c
+++ b/odr/odr_choice.c
@@ -1,10 +1,25 @@
 /*
- * Copyright (C) 1994, Index Data I/S 
- * All rights reserved.
+ * Copyright (c) 1995, Index Data
+ * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: odr_choice.c,v $
- * Revision 1.5  1995-03-18 12:16:31  quinn
+ * Revision 1.10  1995-09-27 15:02:58  quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.9  1995/08/15  12:00:23  quinn
+ * Updated External
+ *
+ * Revision 1.8  1995/06/19  17:01:51  quinn
+ * This should bring us in sync with the version distributed as 1.0b
+ *
+ * Revision 1.7  1995/06/19  13:06:50  quinn
+ * Fixed simple bug in the code to handle untagged choice elements.
+ *
+ * Revision 1.6  1995/05/16  08:50:53  quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.5  1995/03/18  12:16:31  quinn
  * Minor changes.
  *
  * Revision 1.4  1995/03/14  16:59:38  quinn
@@ -23,18 +38,23 @@
 
 #include <odr.h>
 
-int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp)
+int MDF odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp)
 {
-    int i, cl = -1, tg, cn, *which = whichp;
+    int i, cl = -1, tg, cn, *which = whichp, bias = o->choice_bias;
 
     if (o->error)
        return 0;
     if (o->direction != ODR_DECODE && !*(char**)p)
        return 0;
+    o->choice_bias = -1;
     for (i = 0; arm[i].fun; i++)
     {
        if (o->direction == ODR_DECODE)
+       {
+           if (bias >= 0 && bias != arm[i].which)
+               continue;
            *which = arm[i].which;
+       }
        else if (*which != arm[i].which)
            continue;
 
@@ -67,10 +87,17 @@ int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp)
            }
        }
        else  /* no tagging. Have to poll type */
-           if ((*arm[i].fun)(o, p, 0))
+       {
+           if ((*arm[i].fun)(o, p, 1) && *(char**)p)
                return 1;
+       }
     }
     *which = -1;
     *(char*)p = 0;
     return 0;
 }
+
+void MDF odr_choice_bias(ODR o, int what)
+{
+    o->choice_bias = what;
+}