Commit | Line | Data |
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44e0a4f5 JG |
1 | /* |
2 | * attributes.c | |
3 | * | |
4 | * Babeltrace CTF IR - Attributes | |
5 | * | |
6 | * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation | |
7 | * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com> | |
8 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
28 | #include <babeltrace/babeltrace-internal.h> | |
dac5c838 | 29 | #include <babeltrace/values.h> |
44e0a4f5 JG |
30 | |
31 | #define BT_CTF_ATTR_NAME_INDEX 0 | |
83509119 | 32 | #define BT_CTF_ATTR_VALUE_INDEX 1 |
44e0a4f5 JG |
33 | |
34 | BT_HIDDEN | |
dac5c838 | 35 | struct bt_value *bt_ctf_attributes_create(void) |
44e0a4f5 JG |
36 | { |
37 | /* | |
dac5c838 PP |
38 | * Attributes: array value object of array value objects, each one |
39 | * containing two entries: a string value object (attributes | |
40 | * field name), and a value object (attributes field value). | |
44e0a4f5 JG |
41 | * |
42 | * Example (JSON representation): | |
43 | * | |
44 | * [ | |
45 | * ["hostname", "eeppdesk"], | |
46 | * ["sysname", "Linux"], | |
47 | * ["tracer_major", 2], | |
48 | * ["tracer_minor", 5] | |
49 | * ] | |
50 | */ | |
dac5c838 | 51 | return bt_value_array_create(); |
44e0a4f5 JG |
52 | } |
53 | ||
54 | BT_HIDDEN | |
dac5c838 | 55 | void bt_ctf_attributes_destroy(struct bt_value *attr_obj) |
44e0a4f5 | 56 | { |
83509119 | 57 | bt_put(attr_obj); |
44e0a4f5 JG |
58 | } |
59 | ||
60 | BT_HIDDEN | |
544d0515 | 61 | int64_t bt_ctf_attributes_get_count(struct bt_value *attr_obj) |
44e0a4f5 | 62 | { |
dac5c838 | 63 | return bt_value_array_size(attr_obj); |
44e0a4f5 JG |
64 | } |
65 | ||
66 | BT_HIDDEN | |
dac5c838 | 67 | const char *bt_ctf_attributes_get_field_name(struct bt_value *attr_obj, |
44e0a4f5 JG |
68 | int index) |
69 | { | |
70 | int rc; | |
71 | const char *ret = NULL; | |
dac5c838 PP |
72 | struct bt_value *attr_field_obj = NULL; |
73 | struct bt_value *attr_field_name_obj = NULL; | |
44e0a4f5 JG |
74 | |
75 | if (!attr_obj || index < 0) { | |
76 | goto end; | |
77 | } | |
78 | ||
dac5c838 | 79 | attr_field_obj = bt_value_array_get(attr_obj, index); |
44e0a4f5 JG |
80 | |
81 | if (!attr_field_obj) { | |
82 | goto end; | |
83 | } | |
84 | ||
dac5c838 | 85 | attr_field_name_obj = bt_value_array_get(attr_field_obj, |
44e0a4f5 JG |
86 | BT_CTF_ATTR_NAME_INDEX); |
87 | ||
88 | if (!attr_field_name_obj) { | |
89 | goto end; | |
90 | } | |
91 | ||
dac5c838 | 92 | rc = bt_value_string_get(attr_field_name_obj, &ret); |
44e0a4f5 JG |
93 | |
94 | if (rc) { | |
95 | ret = NULL; | |
96 | } | |
97 | ||
98 | end: | |
83509119 JG |
99 | BT_PUT(attr_field_name_obj); |
100 | BT_PUT(attr_field_obj); | |
44e0a4f5 JG |
101 | return ret; |
102 | } | |
103 | ||
104 | BT_HIDDEN | |
dac5c838 | 105 | struct bt_value *bt_ctf_attributes_get_field_value(struct bt_value *attr_obj, |
44e0a4f5 JG |
106 | int index) |
107 | { | |
dac5c838 PP |
108 | struct bt_value *value_obj = NULL; |
109 | struct bt_value *attr_field_obj = NULL; | |
44e0a4f5 JG |
110 | |
111 | if (!attr_obj || index < 0) { | |
112 | goto end; | |
113 | } | |
114 | ||
dac5c838 | 115 | attr_field_obj = bt_value_array_get(attr_obj, index); |
44e0a4f5 JG |
116 | |
117 | if (!attr_field_obj) { | |
118 | goto end; | |
119 | } | |
120 | ||
dac5c838 | 121 | value_obj = bt_value_array_get(attr_field_obj, |
44e0a4f5 JG |
122 | BT_CTF_ATTR_VALUE_INDEX); |
123 | ||
124 | end: | |
83509119 | 125 | BT_PUT(attr_field_obj); |
44e0a4f5 JG |
126 | return value_obj; |
127 | } | |
128 | ||
129 | static | |
dac5c838 PP |
130 | struct bt_value *bt_ctf_attributes_get_field_by_name( |
131 | struct bt_value *attr_obj, const char *name) | |
44e0a4f5 JG |
132 | { |
133 | int i; | |
134 | int attr_size; | |
dac5c838 PP |
135 | struct bt_value *value_obj = NULL; |
136 | struct bt_value *attr_field_name_obj = NULL; | |
44e0a4f5 | 137 | |
dac5c838 | 138 | attr_size = bt_value_array_size(attr_obj); |
44e0a4f5 JG |
139 | |
140 | if (attr_size < 0) { | |
141 | goto error; | |
142 | } | |
143 | ||
144 | for (i = 0; i < attr_size; ++i) { | |
145 | int ret; | |
146 | const char *field_name; | |
147 | ||
dac5c838 | 148 | value_obj = bt_value_array_get(attr_obj, i); |
44e0a4f5 JG |
149 | |
150 | if (!value_obj) { | |
151 | goto error; | |
152 | } | |
153 | ||
dac5c838 | 154 | attr_field_name_obj = bt_value_array_get(value_obj, 0); |
44e0a4f5 JG |
155 | |
156 | if (!attr_field_name_obj) { | |
157 | goto error; | |
158 | } | |
159 | ||
dac5c838 | 160 | ret = bt_value_string_get(attr_field_name_obj, &field_name); |
44e0a4f5 JG |
161 | if (ret) { |
162 | goto error; | |
163 | } | |
164 | ||
165 | if (!strcmp(field_name, name)) { | |
83509119 | 166 | BT_PUT(attr_field_name_obj); |
44e0a4f5 JG |
167 | break; |
168 | } | |
169 | ||
83509119 JG |
170 | BT_PUT(attr_field_name_obj); |
171 | BT_PUT(value_obj); | |
44e0a4f5 JG |
172 | } |
173 | ||
174 | return value_obj; | |
175 | ||
176 | error: | |
83509119 JG |
177 | BT_PUT(attr_field_name_obj); |
178 | BT_PUT(value_obj); | |
44e0a4f5 JG |
179 | |
180 | return value_obj; | |
181 | } | |
182 | ||
183 | BT_HIDDEN | |
dac5c838 PP |
184 | int bt_ctf_attributes_set_field_value(struct bt_value *attr_obj, |
185 | const char *name, struct bt_value *value_obj) | |
44e0a4f5 JG |
186 | { |
187 | int ret = 0; | |
dac5c838 | 188 | struct bt_value *attr_field_obj = NULL; |
44e0a4f5 JG |
189 | |
190 | if (!attr_obj || !name || !value_obj) { | |
191 | ret = -1; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | attr_field_obj = bt_ctf_attributes_get_field_by_name(attr_obj, name); | |
196 | ||
197 | if (attr_field_obj) { | |
dac5c838 | 198 | ret = bt_value_array_set(attr_field_obj, |
44e0a4f5 JG |
199 | BT_CTF_ATTR_VALUE_INDEX, value_obj); |
200 | goto end; | |
201 | } | |
202 | ||
dac5c838 | 203 | attr_field_obj = bt_value_array_create(); |
44e0a4f5 JG |
204 | |
205 | if (!attr_field_obj) { | |
206 | ret = -1; | |
207 | goto end; | |
208 | } | |
209 | ||
dac5c838 PP |
210 | ret = bt_value_array_append_string(attr_field_obj, name); |
211 | ret |= bt_value_array_append(attr_field_obj, value_obj); | |
44e0a4f5 JG |
212 | |
213 | if (ret) { | |
214 | goto end; | |
215 | } | |
216 | ||
dac5c838 | 217 | ret = bt_value_array_append(attr_obj, attr_field_obj); |
44e0a4f5 JG |
218 | |
219 | end: | |
83509119 | 220 | BT_PUT(attr_field_obj); |
44e0a4f5 JG |
221 | |
222 | return ret; | |
223 | } | |
224 | ||
225 | BT_HIDDEN | |
dac5c838 PP |
226 | struct bt_value *bt_ctf_attributes_get_field_value_by_name( |
227 | struct bt_value *attr_obj, const char *name) | |
44e0a4f5 | 228 | { |
dac5c838 PP |
229 | struct bt_value *value_obj = NULL; |
230 | struct bt_value *attr_field_obj = NULL; | |
44e0a4f5 JG |
231 | |
232 | if (!attr_obj || !name) { | |
233 | goto end; | |
234 | } | |
235 | ||
236 | attr_field_obj = bt_ctf_attributes_get_field_by_name(attr_obj, name); | |
237 | ||
238 | if (!attr_field_obj) { | |
239 | goto end; | |
240 | } | |
241 | ||
dac5c838 | 242 | value_obj = bt_value_array_get(attr_field_obj, |
44e0a4f5 JG |
243 | BT_CTF_ATTR_VALUE_INDEX); |
244 | ||
245 | end: | |
83509119 | 246 | BT_PUT(attr_field_obj); |
44e0a4f5 JG |
247 | |
248 | return value_obj; | |
249 | } | |
250 | ||
251 | BT_HIDDEN | |
dac5c838 | 252 | int bt_ctf_attributes_freeze(struct bt_value *attr_obj) |
44e0a4f5 JG |
253 | { |
254 | int i; | |
255 | int count; | |
256 | int ret = 0; | |
257 | ||
258 | if (!attr_obj) { | |
259 | ret = -1; | |
260 | goto end; | |
261 | } | |
262 | ||
dac5c838 | 263 | count = bt_value_array_size(attr_obj); |
44e0a4f5 JG |
264 | |
265 | if (count < 0) { | |
266 | ret = -1; | |
267 | goto end; | |
268 | } | |
269 | ||
270 | /* | |
dac5c838 PP |
271 | * We do not freeze the array value object itself here, since |
272 | * internal stuff could need to modify/add attributes. Each | |
273 | * attribute is frozen one by one. | |
44e0a4f5 JG |
274 | */ |
275 | for (i = 0; i < count; ++i) { | |
dac5c838 | 276 | struct bt_value *obj = NULL; |
44e0a4f5 JG |
277 | |
278 | obj = bt_ctf_attributes_get_field_value(attr_obj, i); | |
279 | ||
280 | if (!obj) { | |
281 | ret = -1; | |
282 | goto end; | |
283 | } | |
284 | ||
dac5c838 | 285 | bt_value_freeze(obj); |
83509119 | 286 | BT_PUT(obj); |
44e0a4f5 JG |
287 | } |
288 | ||
289 | end: | |
44e0a4f5 JG |
290 | return ret; |
291 | } |