2 * Copyright (c) 1995-2002, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
6 * $Log: odr_choice.c,v $
7 * Revision 1.19 2002-02-20 14:42:30 adam
8 * Fixed BER decoding of OPTIONAL CHOICE
10 * Revision 1.18 2000/02/29 13:44:55 adam
11 * Check for config.h (currently not generated).
13 * Revision 1.17 1999/11/30 13:47:11 adam
14 * Improved installation. Moved header files to include/yaz.
16 * Revision 1.16 1999/04/20 09:56:48 adam
17 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
18 * Modified all encoders/decoders to reflect this change.
20 * Revision 1.15 1998/02/11 11:53:34 adam
21 * Changed code so that it compiles as C++.
23 * Revision 1.14 1997/05/14 06:53:57 adam
26 * Revision 1.13 1997/04/30 08:52:10 quinn
29 * Revision 1.12 1996/10/08 12:58:17 adam
30 * New ODR function, odr_choice_enable_bias, to control behaviour of
33 * Revision 1.11 1995/09/29 17:12:23 quinn
36 * Revision 1.10 1995/09/27 15:02:58 quinn
37 * Modified function heads & prototypes.
39 * Revision 1.9 1995/08/15 12:00:23 quinn
42 * Revision 1.8 1995/06/19 17:01:51 quinn
43 * This should bring us in sync with the version distributed as 1.0b
45 * Revision 1.7 1995/06/19 13:06:50 quinn
46 * Fixed simple bug in the code to handle untagged choice elements.
48 * Revision 1.6 1995/05/16 08:50:53 quinn
49 * License, documentation, and memory fixes
51 * Revision 1.5 1995/03/18 12:16:31 quinn
54 * Revision 1.4 1995/03/14 16:59:38 quinn
55 * Added odr_constructed_more check
57 * Revision 1.3 1995/03/08 12:12:22 quinn
58 * Added better error checking.
60 * Revision 1.2 1995/02/09 15:51:48 quinn
63 * Revision 1.1 1995/02/07 17:52:59 quinn
64 * A damn mess, but now things work, I think.
73 int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp,
76 int i, cl = -1, tg, cn, *which = (int *)whichp, bias = o->choice_bias;
80 if (o->direction != ODR_DECODE && !*(char**)p)
83 if (o->direction == ODR_DECODE)
90 if (o->direction == ODR_PRINT)
95 fprintf (o->print, "choice\n");
98 for (i = 0; arm[i].fun; i++)
100 if (o->direction == ODR_DECODE)
102 if (bias >= 0 && bias != arm[i].which)
104 *which = arm[i].which;
106 else if (*which != arm[i].which)
109 if (arm[i].tagmode != ODR_NONE)
111 if (o->direction == ODR_DECODE && cl < 0)
113 if (o->stackp > -1 && !odr_constructed_more(o))
115 if (ber_dectag(o->bp, &cl, &tg, &cn) <= 0)
118 else if (o->direction != ODR_DECODE)
123 if (tg == arm[i].tag && cl == arm[i].zclass)
125 if (arm[i].tagmode == ODR_IMPLICIT)
127 odr_implicit_settag(o, cl, tg);
128 return (*arm[i].fun)(o, (char **)p, 0, arm[i].name);
131 if (!odr_constructed_begin(o, p, cl, tg, 0))
133 return (*arm[i].fun)(o, (char **)p, 0, arm[i].name) &&
134 odr_constructed_end(o);
137 else /* no tagging. Have to poll type */
139 if ((*arm[i].fun)(o, (char **)p, 1, arm[i].name) && *(char**)p)
146 void odr_choice_bias(ODR o, int what)
149 o->choice_bias = what;
152 void odr_choice_enable_bias (ODR o, int mode)
154 o->enable_bias = mode;