Source restructure. yaz-marcdump part of installation

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

diff --git a/src/odr_choice.c b/src/odr_choice.c
new file mode 100644 (file)
index 0000000..53b6516
--- /dev/null
+++ b/src/odr_choice.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 1995-2003, Index Data
+ * See the file LICENSE for details.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Id: odr_choice.c,v 1.1 2003-10-27 12:21:33 adam Exp $
+ */
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "odr-priv.h"
+
+int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp,
+              const char *name)
+{
+    int i, cl = -1, tg, cn, *which = (int *)whichp, bias = o->choice_bias;
+
+    if (o->error)
+       return 0;
+    if (o->direction != ODR_DECODE && !*(char**)p)
+       return 0;
+
+    if (o->direction == ODR_DECODE)
+    {
+        *which = -1;
+        *(char**)p = 0;
+    }
+    o->choice_bias = -1;
+
+    if (o->direction == ODR_PRINT)
+    {
+       if (name)
+       {
+           odr_prname(o, name);
+           fprintf (o->print, "choice\n");
+       }
+    }
+    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;
+
+       if (arm[i].tagmode != ODR_NONE)
+       {
+           if (o->direction == ODR_DECODE && cl < 0)
+           {
+               if (o->op->stackp > -1 && !odr_constructed_more(o))
+                   return 0;
+               if (ber_dectag(o->bp, &cl, &tg, &cn, odr_max(o)) <= 0)
+                   return 0;
+           }
+           else if (o->direction != ODR_DECODE)
+           {
+               cl = arm[i].zclass;
+               tg = arm[i].tag;
+           }
+           if (tg == arm[i].tag && cl == arm[i].zclass)
+           {
+               if (arm[i].tagmode == ODR_IMPLICIT)
+               {
+                   odr_implicit_settag(o, cl, tg);
+                   return (*arm[i].fun)(o, (char **)p, 0, arm[i].name);
+               }
+               /* explicit */
+               if (!odr_constructed_begin(o, p, cl, tg, 0))
+                   return 0;
+               return (*arm[i].fun)(o, (char **)p, 0, arm[i].name) &&
+                   odr_constructed_end(o);
+           }
+       }
+       else  /* no tagging. Have to poll type */
+       {
+           if ((*arm[i].fun)(o, (char **)p, 1, arm[i].name) && *(char**)p)
+               return 1;
+       }
+    }
+    return 0;
+}
+
+void odr_choice_bias(ODR o, int what)
+{
+    if (o->enable_bias)
+        o->choice_bias = what;
+}
+
+void odr_choice_enable_bias (ODR o, int mode)
+{
+    o->enable_bias = mode;
+}