/*
- * Copyright (c) 1995, Index Data
+ * Copyright (c) 1995-1997, Index Data
* See the file LICENSE for details.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: ber_tag.c,v $
- * Revision 1.12 1995-09-27 15:02:57 quinn
+ * Revision 1.18 1998-02-11 11:53:34 adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.17 1997/09/30 09:33:10 adam
+ * Minor changes - removed indentation of ifdef.
+ *
+ * Revision 1.16 1997/09/17 12:10:33 adam
+ * YAZ version 1.4.
+ *
+ * Revision 1.15 1997/09/01 08:51:06 adam
+ * New windows NT/95 port using MSV5.0. Had to avoid a few static
+ * variables used in function ber_tag. These are now part of the
+ * ODR structure.
+ *
+ * Revision 1.14 1997/05/14 06:53:56 adam
+ * C++ support.
+ *
+ * Revision 1.13 1995/09/29 17:12:21 quinn
+ * Smallish
+ *
+ * Revision 1.12 1995/09/27 15:02:57 quinn
* Modified function heads & prototypes.
*
* Revision 1.11 1995/05/16 08:50:48 quinn
* if p: write tag. return 1 (success) or -1 (error).
* if !p: return 0.
* On decoding:
- * if tag && class match up, advance pointer and return 1. set cons.
+ * if tag && zclass match up, advance pointer and return 1. set cons.
* else leave pointer unchanged. Return 0.
*
* Should perhaps be odr_tag?
-*/
-int MDF ber_tag(ODR o, void *p, int class, int tag, int *constructed, int opt)
+ */
+int ber_tag(ODR o, void *p, int zclass, int tag, int *constructed, int opt)
{
- static int lclass = -1, ltag, br, lcons; /* save t&c rather than
- decoding twice */
+ Odr_ber_tag *odr_ber_tag = &o->odr_ber_tag;
int rd;
- char **pp = p;
+ char **pp = (char **)p;
if (o->direction == ODR_DECODE)
*pp = 0;
if (o->stackp < 0)
{
odr_seek(o, ODR_S_SET, 0);
- o->ecb.top = 0;
+ o->ecb.top = 0;
o->bp = o->buf;
- lclass = -1;
+ odr_ber_tag->lclass = -1;
}
switch (o->direction)
{
case ODR_ENCODE:
- if (!*pp)
- {
- if (!opt)
- o->error = OREQUIRED;
- return 0;
- }
- if ((rd = ber_enctag(o, class, tag, *constructed)) < 0)
- return -1;
+ if (!*pp)
+ {
+ if (!opt)
+ o->error = OREQUIRED;
+ return 0;
+ }
+ if ((rd = ber_enctag(o, zclass, tag, *constructed)) < 0)
+ return -1;
#ifdef ODR_DEBUG
- fprintf(stderr, "\n[class=%d,tag=%d,cons=%d,stackp=%d]", class, tag,
- *constructed, o->stackp);
+ fprintf(stderr, "\n[class=%d,tag=%d,cons=%d,stackp=%d]", zclass, tag,
+ *constructed, o->stackp);
#endif
- return 1;
+ return 1;
+
case ODR_DECODE:
- if (o->stackp > -1 && !odr_constructed_more(o))
- {
- if (!opt)
- o->error = OREQUIRED;
- return 0;
- }
- if (lclass < 0)
- {
- if ((br = ber_dectag(o->bp, &lclass, <ag, &lcons)) <= 0)
- {
- o->error = OPROTO;
- return 0;
- }
+ if (o->stackp > -1 && !odr_constructed_more(o))
+ {
+ if (!opt)
+ o->error = OREQUIRED;
+ return 0;
+ }
+ if (odr_ber_tag->lclass < 0)
+ {
+ if ((odr_ber_tag->br = ber_dectag(o->bp, &odr_ber_tag->lclass,
+ &odr_ber_tag->ltag, &odr_ber_tag->lcons)) <= 0)
+ {
+ o->error = OPROTO;
+ return 0;
+ }
#ifdef ODR_DEBUG
- fprintf(stderr, "\n[class=%d,tag=%d,cons=%d,stackp=%d]", lclass, ltag,
- lcons, o->stackp);
+ fprintf(stderr,
+ "\n[class=%d,tag=%d,cons=%d,stackp=%d]",
+ odr_ber_tag->lclass, odr_ber_tag->ltag,
+ odr_ber_tag->lcons, o->stackp);
#endif
- }
- if (class == lclass && tag == ltag)
- {
- o->bp += br;
- o->left -= br;
- *constructed = lcons;
- lclass = -1;
- return 1;
- }
- else
- {
- if (!opt)
- o->error = OREQUIRED;
- return 0;
- }
+ }
+ if (zclass == odr_ber_tag->lclass && tag == odr_ber_tag->ltag)
+ {
+ o->bp += odr_ber_tag->br;
+ o->left -= odr_ber_tag->br;
+ *constructed = odr_ber_tag->lcons;
+ odr_ber_tag->lclass = -1;
+ return 1;
+ }
+ else
+ {
+ if (!opt)
+ o->error = OREQUIRED;
+ return 0;
+ }
case ODR_PRINT:
- if (!*pp && !opt)
- o->error = OREQUIRED;
- return *pp != 0;
- default: o->error = OOTHER; return 0;
+ if (!*pp && !opt)
+ o->error = OREQUIRED;
+ return *pp != 0;
+ default:
+ o->error = OOTHER;
+ return 0;
}
}
/* ber_enctag
- * BER-encode a class/tag/constructed package (identifier octets). Return
+ * BER-encode a zclass/tag/constructed package (identifier octets). Return
* number of bytes encoded, or -1 if out of bounds.
*/
-int MDF ber_enctag(ODR o, int class, int tag, int constructed)
+int ber_enctag(ODR o, int zclass, int tag, int constructed)
{
int cons = (constructed ? 1 : 0), n = 0;
unsigned char octs[sizeof(int)], b;
- b = (class << 6) & 0XC0;
+ b = (zclass << 6) & 0XC0;
b |= (cons << 5) & 0X20;
if (tag <= 30)
{
/* ber_dectag
* Decode BER identifier octets. Return number of bytes read or -1 for error.
*/
-int MDF ber_dectag(unsigned char *buf, int *class, int *tag, int *constructed)
+int ber_dectag(unsigned char *buf, int *zclass, int *tag, int *constructed)
{
unsigned char *b = buf;
- *class = *b >> 6;
+ *zclass = *b >> 6;
*constructed = (*b >> 5) & 0X01;
if ((*tag = *b & 0x1F) <= 30)
return 1;