1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) Index Data
3 * See the file LICENSE for details.
4 */
5 /**
6 * \file odr_seq.c
7 * \brief Implements ODR SEQUENCE codec
8 */
9 #if HAVE_CONFIG_H
10 #include <config.h>
11 #endif
12
13 #include "odr-priv.h"
14
odr_sequence_begin(ODR o,void * p,int size,const char * name)15 int odr_sequence_begin(ODR o, void *p, int size, const char *name)
16 {
17 char **pp = (char**) p;
18
19 if (o->error)
20 return 0;
21 if (o->op->t_class < 0)
22 {
23 o->op->t_class = ODR_UNIVERSAL;
24 o->op->t_tag = ODR_SEQUENCE;
25 }
26 if (o->direction == ODR_DECODE)
27 *pp = 0;
28 if (odr_constructed_begin(o, p, o->op->t_class, o->op->t_tag, name))
29 {
30 if (o->direction == ODR_DECODE && size)
31 *pp = (char *)odr_malloc(o, size);
32 return 1;
33 }
34 else
35 return 0;
36 }
37
odr_set_begin(ODR o,void * p,int size,const char * name)38 int odr_set_begin(ODR o, void *p, int size, const char *name)
39 {
40 char **pp = (char**) p;
41
42 if (o->error)
43 return 0;
44 if (o->op->t_class < 0)
45 {
46 o->op->t_class = ODR_UNIVERSAL;
47 o->op->t_tag = ODR_SET;
48 }
49 if (o->direction == ODR_DECODE)
50 *pp = 0;
51 if (odr_constructed_begin(o, p, o->op->t_class, o->op->t_tag, name))
52 {
53 if (o->direction == ODR_DECODE && size)
54 *pp = (char *)odr_malloc(o, size);
55 return 1;
56 }
57 else
58 return 0;
59 }
60
odr_sequence_end(ODR o)61 int odr_sequence_end(ODR o)
62 {
63 return odr_constructed_end(o);
64 }
65
odr_set_end(ODR o)66 int odr_set_end(ODR o)
67 {
68 return odr_constructed_end(o);
69 }
70
odr_sequence_more(ODR o)71 static int odr_sequence_more(ODR o)
72 {
73 return odr_constructed_more(o);
74 }
75
odr_sequence_x(ODR o,Odr_fun type,void * p,int * num)76 static int odr_sequence_x (ODR o, Odr_fun type, void *p, int *num)
77 {
78 char ***pp = (char***) p; /* for dereferencing */
79 char **tmp = 0;
80 int size = 0, i;
81
82 switch (o->direction)
83 {
84 case ODR_DECODE:
85 *num = 0;
86 *pp = (char **)odr_nullval();
87 while (odr_sequence_more(o))
88 {
89 /* outgrown array? */
90 if (*num * (int) sizeof(void*) >= size)
91 {
92 /* double the buffer size */
93 tmp = (char **)odr_malloc(o, sizeof(void*) *
94 (size += size ? size : 128));
95 if (*num)
96 {
97 memcpy(tmp, *pp, *num * sizeof(void*));
98 /*
99 * For now, we just throw the old *p away, since we use
100 * nibble memory anyway (disgusting, isn't it?).
101 */
102 }
103 *pp = tmp;
104 }
105 if (!(*type)(o, (*pp) + *num, 0, 0))
106 return 0;
107 (*num)++;
108 }
109 break;
110 case ODR_ENCODE: case ODR_PRINT:
111 for (i = 0; i < *num; i++)
112 {
113 if (!(*type)(o, *pp + i, 0, 0))
114 return 0;
115 }
116 break;
117 default:
118 odr_seterror(o, OOTHER, 47);
119 return 0;
120 }
121 return odr_sequence_end(o);
122 }
123
odr_set_of(ODR o,Odr_fun type,void * p,int * num,const char * name)124 int odr_set_of(ODR o, Odr_fun type, void *p, int *num, const char *name)
125 {
126 if (!odr_set_begin(o, p, 0, name)) {
127 if (o->direction == ODR_DECODE)
128 *num = 0;
129 return 0;
130 }
131 return odr_sequence_x (o, type, p, num);
132 }
133
odr_sequence_of(ODR o,Odr_fun type,void * p,int * num,const char * name)134 int odr_sequence_of(ODR o, Odr_fun type, void *p, int *num,
135 const char *name)
136 {
137 if (!odr_sequence_begin(o, p, 0, name)) {
138 if (o->direction == ODR_DECODE)
139 *num = 0;
140 return 0;
141 }
142 return odr_sequence_x (o, type, p, num);
143 }
144
145 /*
146 * Local variables:
147 * c-basic-offset: 4
148 * c-file-style: "Stroustrup"
149 * indent-tabs-mode: nil
150 * End:
151 * vim: shiftwidth=4 tabstop=8 expandtab
152 */
153
154