Smallish

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

diff --git a/odr/odr_cons.c b/odr/odr_cons.c
index 608ee65..1ae66c1 100644 (file)
--- a/odr/odr_cons.c
+++ b/odr/odr_cons.c
@@ -1,10 +1,52 @@
 /*
- * 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_cons.c,v $
- * Revision 1.2  1995-02-07 17:52:59  quinn
+ * Revision 1.15  1995-09-29 17:12:23  quinn
+ * Smallish
+ *
+ * Revision 1.14  1995/09/27  15:02:58  quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.13  1995/08/15  11:16:39  quinn
+ * Fixed pretty-printers.
+ * CV:e ----------------------------------------------------------------------
+ * CV:e ----------------------------------------------------------------------
+ *
+ * Revision 1.12  1995/06/19  12:38:47  quinn
+ * Added BER dumper.
+ *
+ * Revision 1.11  1995/05/16  08:50:53  quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.10  1995/04/18  08:15:21  quinn
+ * Added dynamic memory allocation on encoding (whew). Code is now somewhat
+ * neater. We'll make the same change for decoding one day.
+ *
+ * Revision 1.9  1995/03/28  09:15:49  quinn
+ * Fixed bug in the printing mode
+ *
+ * Revision 1.8  1995/03/15  11:18:04  quinn
+ * Fixed serious bug in odr_cons
+ *
+ * Revision 1.7  1995/03/10  11:44:41  quinn
+ * Fixed serious stack-bug in odr_cons_begin
+ *
+ * Revision 1.6  1995/03/08  12:12:23  quinn
+ * Added better error checking.
+ *
+ * Revision 1.5  1995/02/10  18:57:25  quinn
+ * More in the way of error-checking.
+ *
+ * Revision 1.4  1995/02/10  15:55:29  quinn
+ * Bug fixes, mostly.
+ *
+ * Revision 1.3  1995/02/09  15:51:48  quinn
+ * Works better now.
+ *
+ * Revision 1.2  1995/02/07  17:52:59  quinn
  * A damn mess, but now things work, I think.
  *
  * Revision 1.1  1995/02/02  16:21:53  quinn
@@ -13,28 +55,40 @@
  */
 
 #include <odr.h>
+#include <assert.h>
 
 int odr_constructed_begin(ODR o, void *p, int class, int tag)
 {
     int res;
     int cons = 1;
 
+    if (o->error)
+       return 0;
     if (o->t_class < 0)
     {
        o->t_class = class;
        o->t_tag = tag;
     }
-    if ((res = ber_tag(o, *(char**)p, o->t_class, o->t_tag, &cons)) < 0)
+    if ((res = ber_tag(o, p, o->t_class, o->t_tag, &cons, 1)) < 0)
        return 0;
     if (!res || !cons)
        return 0;
 
+    if (o->stackp == ODR_MAX_STACK - 1)
+    {
+       o->error = OSTACK;
+       return 0;
+    }
     o->stack[++(o->stackp)].lenb = o->bp;
-    if (o->direction == ODR_ENCODE || o->direction == ODR_PRINT)
+    o->stack[o->stackp].len_offset = odr_tell(o);
+#ifdef ODR_DEBUG
+    fprintf(stderr, "[cons_begin(%d)]", o->stackp);
+#endif
+    if (o->direction == ODR_ENCODE)
     {
        o->stack[o->stackp].lenlen = 1;
-       o->bp++;
-       o->left--;
+       if (odr_putc(o, 0) < 0)     /* dummy */
+           return 0;
     }
     else if (o->direction == ODR_DECODE)
     {
@@ -44,18 +98,45 @@ int odr_constructed_begin(ODR o, void *p, int class, int tag)
        o->bp += res;
        o->left -= res;
     }
-    else return 0;
-
+    else if (o->direction == ODR_PRINT)
+    {
+       fprintf(o->print, "%s{\n", odr_indent(o));
+       o->indent++;
+    }
+    else
+    {
+       o->error = OOTHER;
+       return 0;
+    }
     o->stack[o->stackp].base = o->bp;
+    o->stack[o->stackp].base_offset = odr_tell(o);
     return 1;
 }
 
+int odr_constructed_more(ODR o)
+{
+    if (o->error)
+       return 0;
+    if (o->stackp < 0)
+       return 0;
+    if (o->stack[o->stackp].len >= 0)
+       return o->bp - o->stack[o->stackp].base < o->stack[o->stackp].len;
+    else
+       return (!(*o->bp == 0 && *(o->bp + 1) == 0));
+}
+
 int odr_constructed_end(ODR o)
 {
     int res;
+    int pos;
 
+    if (o->error)
+       return 0;
     if (o->stackp < 0)
+    {
+       o->error = OOTHER;
        return 0;
+    }
     switch (o->direction)
     {
        case ODR_DECODE:
@@ -64,29 +145,54 @@ int odr_constructed_end(ODR o)
                if (*o->bp++ == 0 && *(o->bp++) == 0)
                {
                    o->left -= 2;
+                   o->stackp--;
                    return 1;
                }
                else
+               {
+                   o->error = OOTHER;
                    return 0;
+               }
            }
            else if (o->bp - o->stack[o->stackp].base !=
                o->stack[o->stackp].len)
+           {
+               o->error = OCONLEN;
                return 0;
+           }
            o->stackp--;
            return 1;
        case ODR_ENCODE:
-           if ((res = ber_enclen(o->stack[o->stackp].lenb,
-               o->bp - o->stack[o->stackp].base,
+           pos = odr_tell(o);
+           odr_seek(o, ODR_S_SET, o->stack[o->stackp].len_offset);
+           if ((res = ber_enclen(o, pos - o->stack[o->stackp].base_offset,
                o->stack[o->stackp].lenlen, 1)) < 0)
-                   return 0;
+               return 0;
+           odr_seek(o, ODR_S_END, 0);
            if (res == 0)   /* indefinite encoding */
            {
-               *(o->bp++) = *(o->bp++) = 0;
-               o->left--;
+#ifdef ODR_DEBUG
+               fprintf(stderr, "[cons_end(%d): indefinite]", o->stackp);
+#endif
+               if (odr_putc(o, 0) < 0 || odr_putc(o, 0) < 0)
+                   return 0;
+           }
+#ifdef ODR_DEBUG
+           else
+           {
+               fprintf(stderr, "[cons_end(%d): definite]", o->stackp);
            }
+#endif
            o->stackp--;
            return 1;
-       case ODR_PRINT: return 1;
-       default: return 0;
+       case ODR_PRINT:
+           assert(o->indent > 0);
+           o->stackp--;
+           o->indent--;
+           fprintf(o->print, "%s}\n", odr_indent(o));
+           return 1;
+       default:
+           o->error = OOTHER;
+           return 0;
     }
 }