| 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 | |
| 99 | static void json_free_pair(struct json_pair *pair); |
| 100 | static void json_free_value(struct json_value *value); |
| 101 | |
| 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 | } |