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cc372b17 SL |
1 | #include <stdlib.h> |
2 | #include <string.h> | |
3 | #include <stdio.h> | |
4 | #include <errno.h> | |
5 | #include <stdarg.h> | |
6 | #include "json.h" | |
7 | #include "log.h" | |
8 | ||
9 | struct json_object *json_create_object(void) | |
10 | { | |
11 | struct json_object *obj = malloc(sizeof(struct json_object)); | |
12 | if (obj) | |
13 | memset(obj, 0, sizeof(struct json_object)); | |
14 | return obj; | |
15 | } | |
16 | ||
17 | struct json_array *json_create_array(void) | |
18 | { | |
19 | struct json_array *array = malloc(sizeof(struct json_array)); | |
20 | if (array) | |
21 | memset(array, 0, sizeof(struct json_array)); | |
22 | return array; | |
23 | } | |
24 | ||
25 | static struct json_pair *json_create_pair(const char *name, struct json_value *value) | |
26 | { | |
27 | struct json_pair *pair = malloc(sizeof(struct json_pair)); | |
28 | if (pair) { | |
29 | pair->name = strdup(name); | |
30 | pair->value = value; | |
31 | ||
32 | value->parent_type = JSON_PARENT_TYPE_PAIR; | |
33 | value->parent_pair = pair; | |
34 | } | |
35 | return pair; | |
36 | } | |
37 | ||
38 | static struct json_value *json_create_value_int(long number) | |
39 | { | |
40 | struct json_value *value = malloc(sizeof(struct json_value)); | |
41 | ||
42 | if (value) { | |
43 | value->type = JSON_TYPE_INTEGER; | |
44 | value->integer_number = number; | |
45 | } | |
46 | return value; | |
47 | } | |
48 | ||
49 | static struct json_value *json_create_value_float(float number) | |
50 | { | |
51 | struct json_value *value = malloc(sizeof(struct json_value)); | |
52 | ||
53 | if (value) { | |
54 | value->type = JSON_TYPE_FLOAT; | |
55 | value->float_number = number; | |
56 | } | |
57 | return value; | |
58 | } | |
59 | ||
60 | static struct json_value *json_create_value_string(const char *str) | |
61 | { | |
62 | struct json_value *value = malloc(sizeof(struct json_value)); | |
63 | ||
64 | if (value) { | |
65 | value->type = JSON_TYPE_STRING; | |
66 | value->string = strdup(str); | |
67 | if (!value->string) { | |
68 | free(value); | |
69 | value = NULL; | |
70 | } | |
71 | } | |
72 | return value; | |
73 | } | |
74 | ||
75 | static struct json_value *json_create_value_object(struct json_object *obj) | |
76 | { | |
77 | struct json_value *value = malloc(sizeof(struct json_value)); | |
78 | ||
79 | if (value) { | |
80 | value->type = JSON_TYPE_OBJECT; | |
81 | value->object = obj; | |
82 | obj->parent = value; | |
83 | } | |
84 | return value; | |
85 | } | |
86 | ||
87 | static struct json_value *json_create_value_array(struct json_array *array) | |
88 | { | |
89 | struct json_value *value = malloc(sizeof(struct json_value)); | |
90 | ||
91 | if (value) { | |
92 | value->type = JSON_TYPE_ARRAY; | |
93 | value->array = array; | |
94 | array->parent = value; | |
95 | } | |
96 | return value; | |
97 | } | |
98 | ||
cc372b17 SL |
99 | static void json_free_pair(struct json_pair *pair); |
100 | static void json_free_value(struct json_value *value); | |
f3afa57e | 101 | |
cc372b17 SL |
102 | void json_free_object(struct json_object *obj) |
103 | { | |
104 | int i; | |
105 | ||
106 | for (i = 0; i < obj->pair_cnt; i++) | |
107 | json_free_pair(obj->pairs[i]); | |
108 | free(obj->pairs); | |
109 | free(obj); | |
110 | } | |
111 | ||
112 | static void json_free_array(struct json_array *array) | |
113 | { | |
114 | int i; | |
115 | ||
116 | for (i = 0; i < array->value_cnt; i++) | |
117 | json_free_value(array->values[i]); | |
118 | free(array->values); | |
119 | free(array); | |
120 | } | |
121 | ||
122 | static void json_free_pair(struct json_pair *pair) | |
123 | { | |
124 | json_free_value(pair->value); | |
125 | free(pair->name); | |
126 | free(pair); | |
127 | } | |
128 | ||
129 | static void json_free_value(struct json_value *value) | |
130 | { | |
131 | switch (value->type) { | |
132 | case JSON_TYPE_STRING: | |
133 | free(value->string); | |
134 | break; | |
135 | case JSON_TYPE_OBJECT: | |
136 | json_free_object(value->object); | |
137 | break; | |
138 | case JSON_TYPE_ARRAY: | |
139 | json_free_array(value->array); | |
140 | break; | |
141 | } | |
142 | free(value); | |
143 | } | |
144 | ||
145 | static int json_array_add_value(struct json_array *array, struct json_value *value) | |
146 | { | |
147 | struct json_value **values = realloc(array->values, | |
148 | sizeof(struct json_value *) * (array->value_cnt + 1)); | |
149 | ||
150 | if (!values) | |
151 | return ENOMEM; | |
152 | values[array->value_cnt] = value; | |
153 | array->value_cnt++; | |
154 | array->values = values; | |
155 | ||
156 | value->parent_type = JSON_PARENT_TYPE_ARRAY; | |
157 | value->parent_array = array; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static int json_object_add_pair(struct json_object *obj, struct json_pair *pair) | |
162 | { | |
163 | struct json_pair **pairs = realloc(obj->pairs, | |
164 | sizeof(struct json_pair *) * (obj->pair_cnt + 1)); | |
165 | if (!pairs) | |
166 | return ENOMEM; | |
167 | pairs[obj->pair_cnt] = pair; | |
168 | obj->pair_cnt++; | |
169 | obj->pairs = pairs; | |
170 | ||
171 | pair->parent = obj; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | int json_object_add_value_type(struct json_object *obj, const char *name, int type, ...) | |
176 | { | |
177 | struct json_value *value; | |
178 | struct json_pair *pair; | |
179 | va_list args; | |
180 | int ret; | |
181 | ||
182 | va_start(args, type); | |
183 | if (type == JSON_TYPE_STRING) | |
184 | value = json_create_value_string(va_arg(args, char *)); | |
185 | else if (type == JSON_TYPE_INTEGER) | |
186 | value = json_create_value_int(va_arg(args, long)); | |
187 | else if (type == JSON_TYPE_FLOAT) | |
188 | value = json_create_value_float(va_arg(args, double)); | |
189 | else if (type == JSON_TYPE_OBJECT) | |
190 | value = json_create_value_object(va_arg(args, struct json_object *)); | |
191 | else | |
192 | value = json_create_value_array(va_arg(args, struct json_array *)); | |
193 | va_end(args); | |
194 | ||
195 | if (!value) | |
196 | return ENOMEM; | |
197 | ||
198 | pair = json_create_pair(name, value); | |
199 | if (!pair) { | |
200 | json_free_value(value); | |
201 | return ENOMEM; | |
202 | } | |
203 | ret = json_object_add_pair(obj, pair); | |
204 | if (ret) { | |
205 | json_free_pair(pair); | |
206 | return ENOMEM; | |
207 | } | |
208 | return 0; | |
209 | } | |
210 | ||
211 | static void json_print_array(struct json_array *array); | |
212 | int json_array_add_value_type(struct json_array *array, int type, ...) | |
213 | { | |
214 | struct json_value *value; | |
215 | va_list args; | |
216 | int ret; | |
217 | ||
218 | va_start(args, type); | |
219 | if (type == JSON_TYPE_STRING) | |
220 | value = json_create_value_string(va_arg(args, char *)); | |
221 | else if (type == JSON_TYPE_INTEGER) | |
222 | value = json_create_value_int(va_arg(args, long)); | |
223 | else if (type == JSON_TYPE_FLOAT) | |
224 | value = json_create_value_float(va_arg(args, double)); | |
225 | else if (type == JSON_TYPE_OBJECT) | |
226 | value = json_create_value_object(va_arg(args, struct json_object *)); | |
227 | else | |
228 | value = json_create_value_array(va_arg(args, struct json_array *)); | |
229 | va_end(args); | |
230 | ||
231 | if (!value) | |
232 | return ENOMEM; | |
233 | ||
234 | ret = json_array_add_value(array, value); | |
235 | if (ret) { | |
236 | json_free_value(value); | |
237 | return ENOMEM; | |
238 | } | |
239 | return 0; | |
240 | } | |
241 | ||
242 | static int json_value_level(struct json_value *value); | |
243 | static int json_pair_level(struct json_pair *pair); | |
244 | static int json_array_level(struct json_array *array); | |
245 | static int json_object_level(struct json_object *object) | |
246 | { | |
247 | if (object->parent == NULL) | |
248 | return 0; | |
249 | return json_value_level(object->parent); | |
250 | } | |
251 | ||
252 | static int json_pair_level(struct json_pair *pair) | |
253 | { | |
254 | return json_object_level(pair->parent) + 1; | |
255 | } | |
256 | ||
257 | static int json_array_level(struct json_array *array) | |
258 | { | |
259 | return json_value_level(array->parent); | |
260 | } | |
261 | ||
262 | static int json_value_level(struct json_value *value) | |
263 | { | |
264 | if (value->parent_type == JSON_PARENT_TYPE_PAIR) | |
265 | return json_pair_level(value->parent_pair); | |
266 | else | |
267 | return json_array_level(value->parent_array) + 1; | |
268 | } | |
269 | ||
270 | static void json_print_level(int level) | |
271 | { | |
272 | while (level-- > 0) | |
273 | log_info(" "); | |
274 | } | |
275 | ||
276 | static void json_print_pair(struct json_pair *pair); | |
277 | static void json_print_array(struct json_array *array); | |
278 | static void json_print_value(struct json_value *value); | |
279 | void json_print_object(struct json_object *obj) | |
280 | { | |
281 | int i; | |
282 | ||
283 | log_info("{\n"); | |
284 | for (i = 0; i < obj->pair_cnt; i++) { | |
285 | if (i > 0) | |
286 | log_info(",\n"); | |
287 | json_print_pair(obj->pairs[i]); | |
288 | } | |
289 | log_info("\n"); | |
290 | json_print_level(json_object_level(obj)); | |
291 | log_info("}"); | |
292 | } | |
293 | ||
294 | static void json_print_pair(struct json_pair *pair) | |
295 | { | |
296 | json_print_level(json_pair_level(pair)); | |
297 | log_info("\"%s\" : ", pair->name); | |
298 | json_print_value(pair->value); | |
299 | } | |
300 | ||
301 | static void json_print_array(struct json_array *array) | |
302 | { | |
303 | int i; | |
304 | ||
305 | log_info("[\n"); | |
306 | for (i = 0; i < array->value_cnt; i++) { | |
307 | if (i > 0) | |
308 | log_info(",\n"); | |
309 | json_print_level(json_value_level(array->values[i])); | |
310 | json_print_value(array->values[i]); | |
311 | } | |
312 | log_info("\n"); | |
313 | json_print_level(json_array_level(array)); | |
314 | log_info("]"); | |
315 | } | |
316 | ||
317 | static void json_print_value(struct json_value *value) | |
318 | { | |
319 | switch (value->type) { | |
320 | case JSON_TYPE_STRING: | |
321 | log_info("\"%s\"", value->string); | |
322 | break; | |
323 | case JSON_TYPE_INTEGER: | |
324 | log_info("%ld", value->integer_number); | |
325 | break; | |
326 | case JSON_TYPE_FLOAT: | |
327 | log_info("%.2f", value->float_number); | |
328 | break; | |
329 | case JSON_TYPE_OBJECT: | |
330 | json_print_object(value->object); | |
331 | break; | |
332 | case JSON_TYPE_ARRAY: | |
333 | json_print_array(value->array); | |
334 | break; | |
335 | } | |
336 | } |