1 /*
2 * This file is part of ltrace.
3 * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 */
20
21 #include <assert.h>
22 #include <string.h>
23 #include <stdlib.h>
24
25 #include "value_dict.h"
26 #include "value.h"
27
28 struct named_value
29 {
30 const char *name;
31 struct value value;
32 int own_name;
33 };
34
35 void
val_dict_init(struct value_dict * dict)36 val_dict_init(struct value_dict *dict)
37 {
38 VECT_INIT(&dict->numbered, struct value);
39 VECT_INIT(&dict->named, struct named_value);
40 }
41
42 static int
value_clone_cb(struct value * tgt,const struct value * src,void * data)43 value_clone_cb(struct value *tgt, const struct value *src, void *data)
44 {
45 return value_clone(tgt, src);
46 }
47
48 static void
value_dtor(struct value * val,void * data)49 value_dtor(struct value *val, void *data)
50 {
51 value_destroy(val);
52 }
53
54 static int
named_value_clone(struct named_value * tgt,const struct named_value * src,void * data)55 named_value_clone(struct named_value *tgt,
56 const struct named_value *src, void *data)
57 {
58 tgt->name = strdup(src->name);
59 if (tgt->name == NULL)
60 return -1;
61 tgt->own_name = 1;
62 if (value_clone(&tgt->value, &src->value) < 0) {
63 free((char *)tgt->name);
64 return -1;
65 }
66 return 0;
67 }
68
69 static void
named_value_dtor(struct named_value * named,void * data)70 named_value_dtor(struct named_value *named, void *data)
71 {
72 if (named->own_name)
73 free((char *)named->name);
74 value_destroy(&named->value);
75 }
76
77 int
val_dict_clone(struct value_dict * target,struct value_dict * source)78 val_dict_clone(struct value_dict *target, struct value_dict *source)
79 {
80 if (VECT_CLONE(&target->numbered, &source->numbered, struct value,
81 value_clone_cb, value_dtor, NULL) < 0)
82 return -1;
83
84 if (VECT_CLONE(&target->named, &source->named, struct named_value,
85 named_value_clone, named_value_dtor, NULL) < 0) {
86 VECT_DESTROY(&target->numbered, struct value, value_dtor, NULL);
87 return -1;
88 }
89
90 return 0;
91 }
92
93 int
val_dict_push_next(struct value_dict * dict,struct value * val)94 val_dict_push_next(struct value_dict *dict, struct value *val)
95 {
96 return VECT_PUSHBACK(&dict->numbered, val);
97 }
98
99 int
val_dict_push_named(struct value_dict * dict,struct value * val,const char * name,int own_name)100 val_dict_push_named(struct value_dict *dict, struct value *val,
101 const char *name, int own_name)
102 {
103 if (own_name && (name = strdup(name)) == NULL)
104 return -1;
105 struct named_value element = { name, *val, own_name };
106 if (VECT_PUSHBACK(&dict->named, &element) < 0) {
107 if (own_name)
108 free((char *)name);
109 return -1;
110 }
111 return 0;
112 }
113
114 size_t
val_dict_count(struct value_dict * dict)115 val_dict_count(struct value_dict *dict)
116 {
117 return vect_size(&dict->numbered);
118 }
119
120 struct value *
val_dict_get_num(struct value_dict * dict,size_t num)121 val_dict_get_num(struct value_dict *dict, size_t num)
122 {
123 assert(num < vect_size(&dict->numbered));
124 return VECT_ELEMENT(&dict->numbered, struct value, num);
125 }
126
127 struct value *
val_dict_get_name(struct value_dict * dict,const char * name)128 val_dict_get_name(struct value_dict *dict, const char *name)
129 {
130 size_t i;
131 for (i = 0; i < vect_size(&dict->named); ++i) {
132 struct named_value *element
133 = VECT_ELEMENT(&dict->named, struct named_value, i);
134 if (strcmp(element->name, name) == 0)
135 return &element->value;
136 }
137 return NULL;
138 }
139
140 void
val_dict_destroy(struct value_dict * dict)141 val_dict_destroy(struct value_dict *dict)
142 {
143 if (dict == NULL)
144 return;
145
146 VECT_DESTROY(&dict->numbered, struct value, value_dtor, NULL);
147 VECT_DESTROY(&dict->named, struct named_value, named_value_dtor, NULL);
148 }
149