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