| 1 | /*
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| 2 | * Copyright (c) 1995-2000, Index Data
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| 3 | * See the file LICENSE for details.
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| 4 | * Sebastian Hammer, Adam Dickmeiss
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| 5 | *
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| 6 | * $Log$
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| 7 | * Revision 1.1 2000/08/03 03:11:24 johnmcp
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| 8 | * Added the YAZ toolkit source to the packages directory (for z39.50 stuff)
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| 9 | *
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| 10 | * Revision 1.11 2000/02/29 13:44:55 adam
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| 11 | * Check for config.h (currently not generated).
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| 12 | *
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| 13 | * Revision 1.10 1999/11/30 13:47:11 adam
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| 14 | * Improved installation. Moved header files to include/yaz.
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| 15 | *
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| 16 | * Revision 1.9 1998/02/11 11:53:34 adam
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| 17 | * Changed code so that it compiles as C++.
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| 18 | *
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| 19 | * Revision 1.8 1997/05/14 06:53:59 adam
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| 20 | * C++ support.
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| 21 | *
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| 22 | * Revision 1.7 1996/02/20 12:52:54 quinn
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| 23 | * Added odr_peektag
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| 24 | *
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| 25 | * Revision 1.6 1995/12/14 16:28:26 quinn
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| 26 | * More explain stuff.
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| 27 | *
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| 28 | * Revision 1.5 1995/09/29 17:12:27 quinn
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| 29 | * Smallish
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| 30 | *
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| 31 | * Revision 1.4 1995/09/27 15:03:00 quinn
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| 32 | * Modified function heads & prototypes.
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| 33 | *
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| 34 | * Revision 1.3 1995/05/16 08:51:00 quinn
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| 35 | * License, documentation, and memory fixes
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| 36 | *
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| 37 | * Revision 1.2 1995/03/08 12:12:31 quinn
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| 38 | * Added better error checking.
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| 39 | *
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| 40 | * Revision 1.1 1995/02/02 16:21:54 quinn
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| 41 | * First kick.
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| 42 | *
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| 43 | */
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| 44 | #if HAVE_CONFIG_H
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| 45 | #include <config.h>
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| 46 | #endif
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| 47 |
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| 48 | #include <yaz/odr.h>
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| 49 |
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| 50 | int odr_peektag(ODR o, int *zclass, int *tag, int *cons)
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| 51 | {
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| 52 | if (o->direction != ODR_DECODE)
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| 53 | {
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| 54 | o->error = OOTHER;
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| 55 | return 0;
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| 56 | }
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| 57 | if (o->stackp > -1 && !odr_constructed_more(o))
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| 58 | return 0;
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| 59 | if (ber_dectag(o->bp, zclass, tag, cons) <= 0)
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| 60 | {
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| 61 | o->error = OREQUIRED;
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| 62 | return 0;
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| 63 | }
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| 64 | return 1;
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| 65 | }
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| 66 |
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| 67 | int odr_implicit_settag(ODR o, int zclass, int tag)
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| 68 | {
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| 69 | if (o->error)
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| 70 | return 0;
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| 71 | if (o->t_class < 0)
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| 72 | {
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| 73 | o->t_class = zclass;
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| 74 | o->t_tag = tag;
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| 75 | }
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| 76 | return 1;
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| 77 | }
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| 78 |
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| 79 | int odr_initmember(ODR o, void *p, int size)
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| 80 | {
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| 81 | char **pp = (char **) p;
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| 82 |
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| 83 | if (o->error)
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| 84 | return 0;
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| 85 | if (o->direction == ODR_DECODE)
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| 86 | *pp = (char *)odr_malloc(o, size);
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| 87 | else if (!*pp)
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| 88 | {
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| 89 | o->t_class = -1;
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| 90 | return 0;
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| 91 | }
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| 92 | return 1;
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| 93 | }
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