2 * Copyright (C) 1995-2005, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: odr_choice.c,v 1.4 2005-01-15 19:47:14 adam Exp $
10 * \brief Implements ODR CHOICE codec
19 int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp,
22 int i, cl = -1, tg, cn, *which = (int *)whichp, bias = o->choice_bias;
26 if (o->direction != ODR_DECODE && !*(char**)p)
29 if (o->direction == ODR_DECODE)
36 if (o->direction == ODR_PRINT)
41 odr_printf(o, "choice\n");
44 for (i = 0; arm[i].fun; i++)
46 if (o->direction == ODR_DECODE)
48 if (bias >= 0 && bias != arm[i].which)
50 *which = arm[i].which;
52 else if (*which != arm[i].which)
55 if (arm[i].tagmode != ODR_NONE)
57 if (o->direction == ODR_DECODE && cl < 0)
59 if (o->op->stackp > -1 && !odr_constructed_more(o))
61 if (ber_dectag(o->bp, &cl, &tg, &cn, odr_max(o)) <= 0)
64 else if (o->direction != ODR_DECODE)
69 if (tg == arm[i].tag && cl == arm[i].zclass)
71 if (arm[i].tagmode == ODR_IMPLICIT)
73 odr_implicit_settag(o, cl, tg);
74 return (*arm[i].fun)(o, (char **)p, 0, arm[i].name);
77 if (!odr_constructed_begin(o, p, cl, tg, 0))
79 return (*arm[i].fun)(o, (char **)p, 0, arm[i].name) &&
80 odr_constructed_end(o);
83 else /* no tagging. Have to poll type */
85 if ((*arm[i].fun)(o, (char **)p, 1, arm[i].name) && *(char**)p)
92 void odr_choice_bias(ODR o, int what)
95 o->choice_bias = what;
98 void odr_choice_enable_bias (ODR o, int mode)
100 o->enable_bias = mode;