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Commit | Line | Data |
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cbb23cdb | 1 | /* |
2 | Parson ( http://kgabis.github.com/parson/ ) | |
3 | Copyright (c) 2012 Krzysztof Gabis | |
4 | ||
5 | Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | of this software and associated documentation files (the "Software"), to deal | |
7 | in the Software without restriction, including without limitation the rights | |
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | copies of the Software, and to permit persons to whom the Software is | |
10 | furnished to do so, subject to the following conditions: | |
11 | ||
12 | The above copyright notice and this permission notice shall be included in | |
13 | all copies or substantial portions of the Software. | |
14 | ||
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
21 | THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include "parson.h" | |
25 | ||
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <ctype.h> | |
30 | ||
31 | #define ERROR 0 | |
32 | #define SUCCESS 1 | |
33 | #define STARTING_CAPACITY 15 | |
34 | #define ARRAY_MAX_CAPACITY 122880 /* 15*(2^13) */ | |
35 | #define OBJECT_MAX_CAPACITY 960 /* 15*(2^6) */ | |
36 | #define MAX_NESTING 19 | |
37 | #define sizeof_token(a) (sizeof(a) - 1) | |
38 | #define skip_char(str) ((*str)++) | |
39 | #define skip_whitespaces(str) while (isspace(**string)) { skip_char(string); } | |
40 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
41 | ||
42 | #define parson_malloc(a) malloc(a) | |
43 | #define parson_free(a) free((void*)a) | |
44 | #define parson_realloc(a, b) realloc(a, b) | |
45 | ||
46 | /* Type definitions */ | |
47 | typedef union json_value_value { | |
48 | const char *string; | |
49 | double number; | |
50 | JSON_Object *object; | |
51 | JSON_Array *array; | |
52 | int boolean; | |
53 | int null; | |
54 | } JSON_Value_Value; | |
55 | ||
56 | struct json_value_t { | |
57 | JSON_Value_Type type; | |
58 | JSON_Value_Value value; | |
59 | }; | |
60 | ||
61 | struct json_object_t { | |
62 | const char **names; | |
63 | JSON_Value **values; | |
64 | size_t count; | |
65 | size_t capacity; | |
66 | }; | |
67 | ||
68 | struct json_array_t { | |
69 | JSON_Value **items; | |
70 | size_t count; | |
71 | size_t capacity; | |
72 | }; | |
73 | ||
74 | /* Various */ | |
75 | static int try_realloc(void **ptr, size_t new_size); | |
76 | static char * parson_strndup(const char *string, size_t n); | |
77 | static int is_utf(const unsigned char *string); | |
78 | static int is_decimal(const char *string, size_t length); | |
79 | ||
80 | /* JSON Object */ | |
81 | static JSON_Object * json_object_init(void); | |
82 | static int json_object_add(JSON_Object *object, const char *name, JSON_Value *value); | |
83 | static int json_object_resize(JSON_Object *object, size_t capacity); | |
84 | static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n); | |
85 | static void json_object_free(JSON_Object *object); | |
86 | ||
87 | /* JSON Array */ | |
88 | static JSON_Array * json_array_init(void); | |
89 | static int json_array_add(JSON_Array *array, JSON_Value *value); | |
90 | static int json_array_resize(JSON_Array *array, size_t capacity); | |
91 | static void json_array_free(JSON_Array *array); | |
92 | ||
93 | /* JSON Value */ | |
94 | static JSON_Value * json_value_init_object(void); | |
95 | static JSON_Value * json_value_init_array(void); | |
96 | static JSON_Value * json_value_init_string(const char *string); | |
97 | static JSON_Value * json_value_init_number(double number); | |
98 | static JSON_Value * json_value_init_boolean(int boolean); | |
99 | static JSON_Value * json_value_init_null(void); | |
100 | ||
101 | /* Parser */ | |
102 | static void skip_quotes(const char **string); | |
103 | static const char * get_processed_string(const char **string); | |
104 | static JSON_Value * parse_object_value(const char **string, size_t nesting); | |
105 | static JSON_Value * parse_array_value(const char **string, size_t nesting); | |
106 | static JSON_Value * parse_string_value(const char **string); | |
107 | static JSON_Value * parse_boolean_value(const char **string); | |
108 | static JSON_Value * parse_number_value(const char **string); | |
109 | static JSON_Value * parse_null_value(const char **string); | |
110 | static JSON_Value * parse_value(const char **string, size_t nesting); | |
111 | ||
112 | /* Various */ | |
113 | static int try_realloc(void **ptr, size_t new_size) { | |
114 | void *reallocated_ptr = parson_realloc(*ptr, new_size); | |
115 | if (!reallocated_ptr) { return ERROR; } | |
116 | *ptr = reallocated_ptr; | |
117 | return SUCCESS; | |
118 | } | |
119 | ||
120 | static char * parson_strndup(const char *string, size_t n) { | |
121 | char *output_string = (char*)parson_malloc(n + 1); | |
122 | if (!output_string) { return NULL; } | |
123 | output_string[n] = '\0'; | |
124 | strncpy(output_string, string, n); | |
125 | return output_string; | |
126 | } | |
127 | ||
128 | static int is_utf(const unsigned char *s) { | |
129 | return isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) && isxdigit(s[3]); | |
130 | } | |
131 | ||
132 | static int is_decimal(const char *string, size_t length) { | |
133 | if (length > 1 && string[0] == '0' && string[1] != '.') { return 0; } | |
134 | if (length > 2 && !strncmp(string, "-0", 2) && string[2] != '.') { return 0; } | |
135 | while (length--) { if (strchr("xX", string[length])) { return 0; } } | |
136 | return 1; | |
137 | } | |
138 | ||
139 | /* JSON Object */ | |
140 | static JSON_Object * json_object_init(void) { | |
141 | JSON_Object *new_obj = (JSON_Object*)parson_malloc(sizeof(JSON_Object)); | |
142 | if (!new_obj) { return NULL; } | |
143 | new_obj->names = (const char**)NULL; | |
144 | new_obj->values = (JSON_Value**)NULL; | |
145 | new_obj->capacity = 0; | |
146 | new_obj->count = 0; | |
147 | return new_obj; | |
148 | } | |
149 | ||
150 | static int json_object_add(JSON_Object *object, const char *name, JSON_Value *value) { | |
151 | size_t index; | |
152 | if (object->count >= object->capacity) { | |
153 | size_t new_capacity = MAX(object->capacity * 2, STARTING_CAPACITY); | |
154 | if (new_capacity > OBJECT_MAX_CAPACITY) { return ERROR; } | |
155 | if (json_object_resize(object, new_capacity) == ERROR) { return ERROR; } | |
156 | } | |
157 | if (json_object_get_value(object, name) != NULL) { return ERROR; } | |
158 | index = object->count; | |
159 | object->names[index] = parson_strndup(name, strlen(name)); | |
160 | if (!object->names[index]) { return ERROR; } | |
161 | object->values[index] = value; | |
162 | object->count++; | |
163 | return SUCCESS; | |
164 | } | |
165 | ||
166 | static int json_object_resize(JSON_Object *object, size_t capacity) { | |
167 | if (try_realloc((void**)&object->names, capacity * sizeof(char*)) == ERROR) { return ERROR; } | |
168 | if (try_realloc((void**)&object->values, capacity * sizeof(JSON_Value*)) == ERROR) { return ERROR; } | |
169 | object->capacity = capacity; | |
170 | return SUCCESS; | |
171 | } | |
172 | ||
173 | static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n) { | |
174 | size_t i, name_length; | |
175 | for (i = 0; i < json_object_get_count(object); i++) { | |
176 | name_length = strlen(object->names[i]); | |
177 | if (name_length != n) { continue; } | |
178 | if (strncmp(object->names[i], name, n) == 0) { return object->values[i]; } | |
179 | } | |
180 | return NULL; | |
181 | } | |
182 | ||
183 | static void json_object_free(JSON_Object *object) { | |
184 | while(object->count--) { | |
185 | parson_free(object->names[object->count]); | |
186 | json_value_free(object->values[object->count]); | |
187 | } | |
188 | parson_free(object->names); | |
189 | parson_free(object->values); | |
190 | parson_free(object); | |
191 | } | |
192 | ||
193 | /* JSON Array */ | |
194 | static JSON_Array * json_array_init(void) { | |
195 | JSON_Array *new_array = (JSON_Array*)parson_malloc(sizeof(JSON_Array)); | |
196 | if (!new_array) { return NULL; } | |
197 | new_array->items = (JSON_Value**)NULL; | |
198 | new_array->capacity = 0; | |
199 | new_array->count = 0; | |
200 | return new_array; | |
201 | } | |
202 | ||
203 | static int json_array_add(JSON_Array *array, JSON_Value *value) { | |
204 | if (array->count >= array->capacity) { | |
205 | size_t new_capacity = MAX(array->capacity * 2, STARTING_CAPACITY); | |
206 | if (new_capacity > ARRAY_MAX_CAPACITY) { return ERROR; } | |
207 | if (!json_array_resize(array, new_capacity)) { return ERROR; } | |
208 | } | |
209 | array->items[array->count] = value; | |
210 | array->count++; | |
211 | return SUCCESS; | |
212 | } | |
213 | ||
214 | static int json_array_resize(JSON_Array *array, size_t capacity) { | |
215 | if (try_realloc((void**)&array->items, capacity * sizeof(JSON_Value*)) == ERROR) { return ERROR; } | |
216 | array->capacity = capacity; | |
217 | return SUCCESS; | |
218 | } | |
219 | ||
220 | static void json_array_free(JSON_Array *array) { | |
221 | while (array->count--) { json_value_free(array->items[array->count]); } | |
222 | parson_free(array->items); | |
223 | parson_free(array); | |
224 | } | |
225 | ||
226 | /* JSON Value */ | |
227 | static JSON_Value * json_value_init_object(void) { | |
228 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
229 | if (!new_value) { return NULL; } | |
230 | new_value->type = JSONObject; | |
231 | new_value->value.object = json_object_init(); | |
232 | if (!new_value->value.object) { parson_free(new_value); return NULL; } | |
233 | return new_value; | |
234 | } | |
235 | ||
236 | static JSON_Value * json_value_init_array(void) { | |
237 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
238 | if (!new_value) { return NULL; } | |
239 | new_value->type = JSONArray; | |
240 | new_value->value.array = json_array_init(); | |
241 | if (!new_value->value.array) { parson_free(new_value); return NULL; } | |
242 | return new_value; | |
243 | } | |
244 | ||
245 | static JSON_Value * json_value_init_string(const char *string) { | |
246 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
247 | if (!new_value) { return NULL; } | |
248 | new_value->type = JSONString; | |
249 | new_value->value.string = string; | |
250 | return new_value; | |
251 | } | |
252 | ||
253 | static JSON_Value * json_value_init_number(double number) { | |
254 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
255 | if (!new_value) { return NULL; } | |
256 | new_value->type = JSONNumber; | |
257 | new_value->value.number = number; | |
258 | return new_value; | |
259 | } | |
260 | ||
261 | static JSON_Value * json_value_init_boolean(int boolean) { | |
262 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
263 | if (!new_value) { return NULL; } | |
264 | new_value->type = JSONBoolean; | |
265 | new_value->value.boolean = boolean; | |
266 | return new_value; | |
267 | } | |
268 | ||
269 | static JSON_Value * json_value_init_null(void) { | |
270 | JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); | |
271 | if (!new_value) { return NULL; } | |
272 | new_value->type = JSONNull; | |
273 | return new_value; | |
274 | } | |
275 | ||
276 | /* Parser */ | |
277 | static void skip_quotes(const char **string) { | |
278 | skip_char(string); | |
279 | while (**string != '\"') { | |
280 | if (**string == '\0') { return; } | |
281 | if (**string == '\\') { skip_char(string); if (**string == '\0') { return; }} | |
282 | skip_char(string); | |
283 | } | |
284 | skip_char(string); | |
285 | } | |
286 | ||
287 | /* Returns contents of a string inside double quotes and parses escaped | |
288 | characters inside. | |
289 | Example: "\u006Corem ipsum" -> lorem ipsum */ | |
290 | static const char * get_processed_string(const char **string) { | |
291 | const char *string_start = *string; | |
292 | char *output, *processed_ptr, *unprocessed_ptr, current_char; | |
293 | unsigned int utf_val; | |
294 | skip_quotes(string); | |
295 | if (**string == '\0') { return NULL; } | |
296 | output = parson_strndup(string_start + 1, *string - string_start - 2); | |
297 | if (!output) { return NULL; } | |
298 | processed_ptr = unprocessed_ptr = output; | |
299 | while (*unprocessed_ptr) { | |
300 | current_char = *unprocessed_ptr; | |
301 | if (current_char == '\\') { | |
302 | unprocessed_ptr++; | |
303 | current_char = *unprocessed_ptr; | |
304 | switch (current_char) { | |
305 | case '\"': case '\\': case '/': break; | |
306 | case 'b': current_char = '\b'; break; | |
307 | case 'f': current_char = '\f'; break; | |
308 | case 'n': current_char = '\n'; break; | |
309 | case 'r': current_char = '\r'; break; | |
310 | case 't': current_char = '\t'; break; | |
311 | case 'u': | |
312 | unprocessed_ptr++; | |
313 | if (!is_utf((const unsigned char*)unprocessed_ptr) || | |
314 | sscanf(unprocessed_ptr, "%4x", &utf_val) == EOF) { | |
315 | parson_free(output); return NULL; | |
316 | } | |
317 | if (utf_val < 0x80) { | |
318 | current_char = utf_val; | |
319 | } else if (utf_val < 0x800) { | |
320 | *processed_ptr++ = (utf_val >> 6) | 0xC0; | |
321 | current_char = ((utf_val | 0x80) & 0xBF); | |
322 | } else { | |
323 | *processed_ptr++ = (utf_val >> 12) | 0xE0; | |
324 | *processed_ptr++ = (((utf_val >> 6) | 0x80) & 0xBF); | |
325 | current_char = ((utf_val | 0x80) & 0xBF); | |
326 | } | |
327 | unprocessed_ptr += 3; | |
328 | break; | |
329 | default: | |
330 | parson_free(output); | |
331 | return NULL; | |
332 | break; | |
333 | } | |
334 | } else if ((unsigned char)current_char < 0x20) { /* 0x00-0x19 are invalid characters for json string (http://www.ietf.org/rfc/rfc4627.txt) */ | |
335 | parson_free(output); | |
336 | return NULL; | |
337 | } | |
338 | *processed_ptr = current_char; | |
339 | processed_ptr++; | |
340 | unprocessed_ptr++; | |
341 | } | |
342 | *processed_ptr = '\0'; | |
343 | if (try_realloc((void**)&output, strlen(output) + 1) == ERROR) { return NULL; } | |
344 | return output; | |
345 | } | |
346 | ||
347 | static JSON_Value * parse_value(const char **string, size_t nesting) { | |
348 | if (nesting > MAX_NESTING) { return NULL; } | |
349 | skip_whitespaces(string); | |
350 | switch (**string) { | |
351 | case '{': | |
352 | return parse_object_value(string, nesting + 1); | |
353 | case '[': | |
354 | return parse_array_value(string, nesting + 1); | |
355 | case '\"': | |
356 | return parse_string_value(string); | |
357 | case 'f': case 't': | |
358 | return parse_boolean_value(string); | |
359 | case '-': | |
360 | case '0': case '1': case '2': case '3': case '4': | |
361 | case '5': case '6': case '7': case '8': case '9': | |
362 | return parse_number_value(string); | |
363 | case 'n': | |
364 | return parse_null_value(string); | |
365 | default: | |
366 | return NULL; | |
367 | } | |
368 | } | |
369 | ||
370 | static JSON_Value * parse_object_value(const char **string, size_t nesting) { | |
371 | JSON_Value *output_value = json_value_init_object(), *new_value = NULL; | |
372 | JSON_Object *output_object = json_value_get_object(output_value); | |
373 | const char *new_key = NULL; | |
374 | if (!output_value) { return NULL; } | |
375 | skip_char(string); | |
376 | skip_whitespaces(string); | |
377 | if (**string == '}') { skip_char(string); return output_value; } /* empty object */ | |
378 | while (**string != '\0') { | |
379 | new_key = get_processed_string(string); | |
380 | skip_whitespaces(string); | |
381 | if (!new_key || **string != ':') { | |
382 | json_value_free(output_value); | |
383 | return NULL; | |
384 | } | |
385 | skip_char(string); | |
386 | new_value = parse_value(string, nesting); | |
387 | if (!new_value) { | |
388 | parson_free(new_key); | |
389 | json_value_free(output_value); | |
390 | return NULL; | |
391 | } | |
392 | if(!json_object_add(output_object, new_key, new_value)) { | |
393 | parson_free(new_key); | |
394 | parson_free(new_value); | |
395 | json_value_free(output_value); | |
396 | return NULL; | |
397 | } | |
398 | parson_free(new_key); | |
399 | skip_whitespaces(string); | |
400 | if (**string != ',') { break; } | |
401 | skip_char(string); | |
402 | skip_whitespaces(string); | |
403 | } | |
404 | skip_whitespaces(string); | |
405 | if (**string != '}' || /* Trim object after parsing is over */ | |
406 | json_object_resize(output_object, json_object_get_count(output_object)) == ERROR) { | |
407 | json_value_free(output_value); | |
408 | return NULL; | |
409 | } | |
410 | skip_char(string); | |
411 | return output_value; | |
412 | } | |
413 | ||
414 | static JSON_Value * parse_array_value(const char **string, size_t nesting) { | |
415 | JSON_Value *output_value = json_value_init_array(), *new_array_value = NULL; | |
416 | JSON_Array *output_array = json_value_get_array(output_value); | |
417 | if (!output_value) { return NULL; } | |
418 | skip_char(string); | |
419 | skip_whitespaces(string); | |
420 | if (**string == ']') { /* empty array */ | |
421 | skip_char(string); | |
422 | return output_value; | |
423 | } | |
424 | while (**string != '\0') { | |
425 | new_array_value = parse_value(string, nesting); | |
426 | if (!new_array_value) { | |
427 | json_value_free(output_value); | |
428 | return NULL; | |
429 | } | |
430 | if(json_array_add(output_array, new_array_value) == ERROR) { | |
431 | parson_free(new_array_value); | |
432 | json_value_free(output_value); | |
433 | return NULL; | |
434 | } | |
435 | skip_whitespaces(string); | |
436 | if (**string != ',') { break; } | |
437 | skip_char(string); | |
438 | skip_whitespaces(string); | |
439 | } | |
440 | skip_whitespaces(string); | |
441 | if (**string != ']' || /* Trim array after parsing is over */ | |
442 | json_array_resize(output_array, json_array_get_count(output_array)) == ERROR) { | |
443 | json_value_free(output_value); | |
444 | return NULL; | |
445 | } | |
446 | skip_char(string); | |
447 | return output_value; | |
448 | } | |
449 | ||
450 | static JSON_Value * parse_string_value(const char **string) { | |
451 | const char *new_string = get_processed_string(string); | |
452 | if (!new_string) { return NULL; } | |
453 | return json_value_init_string(new_string); | |
454 | } | |
455 | ||
456 | static JSON_Value * parse_boolean_value(const char **string) { | |
457 | size_t true_token_size = sizeof_token("true"); | |
458 | size_t false_token_size = sizeof_token("false"); | |
459 | if (strncmp("true", *string, true_token_size) == 0) { | |
460 | *string += true_token_size; | |
461 | return json_value_init_boolean(1); | |
462 | } else if (strncmp("false", *string, false_token_size) == 0) { | |
463 | *string += false_token_size; | |
464 | return json_value_init_boolean(0); | |
465 | } | |
466 | return NULL; | |
467 | } | |
468 | ||
469 | static JSON_Value * parse_number_value(const char **string) { | |
470 | char *end; | |
471 | double number = strtod(*string, &end); | |
472 | JSON_Value *output_value; | |
473 | if (is_decimal(*string, end - *string)) { | |
474 | *string = end; | |
475 | output_value = json_value_init_number(number); | |
476 | } else { | |
477 | output_value = NULL; | |
478 | } | |
479 | return output_value; | |
480 | } | |
481 | ||
482 | static JSON_Value * parse_null_value(const char **string) { | |
483 | size_t token_size = sizeof_token("null"); | |
484 | if (strncmp("null", *string, token_size) == 0) { | |
485 | *string += token_size; | |
486 | return json_value_init_null(); | |
487 | } | |
488 | return NULL; | |
489 | } | |
490 | ||
491 | /* Parser API */ | |
492 | JSON_Value * json_parse_file(const char *filename) { | |
493 | FILE *fp = fopen(filename, "r"); | |
494 | size_t file_size; | |
495 | char *file_contents; | |
496 | JSON_Value *output_value; | |
497 | if (!fp) { return NULL; } | |
498 | fseek(fp, 0L, SEEK_END); | |
499 | file_size = ftell(fp); | |
500 | rewind(fp); | |
501 | file_contents = (char*)parson_malloc(sizeof(char) * (file_size + 1)); | |
502 | if (!file_contents) { fclose(fp); return NULL; } | |
503 | fread(file_contents, file_size, 1, fp); | |
504 | fclose(fp); | |
505 | file_contents[file_size] = '\0'; | |
506 | output_value = json_parse_string(file_contents); | |
507 | parson_free(file_contents); | |
508 | return output_value; | |
509 | } | |
510 | ||
511 | JSON_Value * json_parse_string(const char *string) { | |
512 | if (!string || (*string != '{' && *string != '[')) { return NULL; } | |
513 | return parse_value((const char**)&string, 0); | |
514 | } | |
515 | ||
516 | /* JSON Object API */ | |
517 | JSON_Value * json_object_get_value(const JSON_Object *object, const char *name) { | |
518 | return json_object_nget_value(object, name, strlen(name)); | |
519 | } | |
520 | ||
521 | const char * json_object_get_string(const JSON_Object *object, const char *name) { | |
522 | return json_value_get_string(json_object_get_value(object, name)); | |
523 | } | |
524 | ||
525 | double json_object_get_number(const JSON_Object *object, const char *name) { | |
526 | return json_value_get_number(json_object_get_value(object, name)); | |
527 | } | |
528 | ||
529 | JSON_Object * json_object_get_object(const JSON_Object *object, const char *name) { | |
530 | return json_value_get_object(json_object_get_value(object, name)); | |
531 | } | |
532 | ||
533 | JSON_Array * json_object_get_array(const JSON_Object *object, const char *name) { | |
534 | return json_value_get_array(json_object_get_value(object, name)); | |
535 | } | |
536 | ||
537 | int json_object_get_boolean(const JSON_Object *object, const char *name) { | |
538 | return json_value_get_boolean(json_object_get_value(object, name)); | |
539 | } | |
540 | ||
541 | JSON_Value * json_object_dotget_value(const JSON_Object *object, const char *name) { | |
542 | const char *dot_position = strchr(name, '.'); | |
543 | if (!dot_position) { return json_object_get_value(object, name); } | |
544 | object = json_value_get_object(json_object_nget_value(object, name, dot_position - name)); | |
545 | return json_object_dotget_value(object, dot_position + 1); | |
546 | } | |
547 | ||
548 | const char * json_object_dotget_string(const JSON_Object *object, const char *name) { | |
549 | return json_value_get_string(json_object_dotget_value(object, name)); | |
550 | } | |
551 | ||
552 | double json_object_dotget_number(const JSON_Object *object, const char *name) { | |
553 | return json_value_get_number(json_object_dotget_value(object, name)); | |
554 | } | |
555 | ||
556 | JSON_Object * json_object_dotget_object(const JSON_Object *object, const char *name) { | |
557 | return json_value_get_object(json_object_dotget_value(object, name)); | |
558 | } | |
559 | ||
560 | JSON_Array * json_object_dotget_array(const JSON_Object *object, const char *name) { | |
561 | return json_value_get_array(json_object_dotget_value(object, name)); | |
562 | } | |
563 | ||
564 | int json_object_dotget_boolean(const JSON_Object *object, const char *name) { | |
565 | return json_value_get_boolean(json_object_dotget_value(object, name)); | |
566 | } | |
567 | ||
568 | size_t json_object_get_count(const JSON_Object *object) { | |
569 | return object ? object->count : 0; | |
570 | } | |
571 | ||
572 | const char * json_object_get_name(const JSON_Object *object, size_t index) { | |
573 | if (index >= json_object_get_count(object)) { return NULL; } | |
574 | return object->names[index]; | |
575 | } | |
576 | ||
577 | /* JSON Array API */ | |
578 | JSON_Value * json_array_get_value(const JSON_Array *array, size_t index) { | |
579 | if (index >= json_array_get_count(array)) { return NULL; } | |
580 | return array->items[index]; | |
581 | } | |
582 | ||
583 | const char * json_array_get_string(const JSON_Array *array, size_t index) { | |
584 | return json_value_get_string(json_array_get_value(array, index)); | |
585 | } | |
586 | ||
587 | double json_array_get_number(const JSON_Array *array, size_t index) { | |
588 | return json_value_get_number(json_array_get_value(array, index)); | |
589 | } | |
590 | ||
591 | JSON_Object * json_array_get_object(const JSON_Array *array, size_t index) { | |
592 | return json_value_get_object(json_array_get_value(array, index)); | |
593 | } | |
594 | ||
595 | JSON_Array * json_array_get_array(const JSON_Array *array, size_t index) { | |
596 | return json_value_get_array(json_array_get_value(array, index)); | |
597 | } | |
598 | ||
599 | int json_array_get_boolean(const JSON_Array *array, size_t index) { | |
600 | return json_value_get_boolean(json_array_get_value(array, index)); | |
601 | } | |
602 | ||
603 | size_t json_array_get_count(const JSON_Array *array) { | |
604 | return array ? array->count : 0; | |
605 | } | |
606 | ||
607 | /* JSON Value API */ | |
608 | JSON_Value_Type json_value_get_type(const JSON_Value *value) { | |
609 | return value ? value->type : JSONError; | |
610 | } | |
611 | ||
612 | JSON_Object * json_value_get_object(const JSON_Value *value) { | |
613 | return json_value_get_type(value) == JSONObject ? value->value.object : NULL; | |
614 | } | |
615 | ||
616 | JSON_Array * json_value_get_array(const JSON_Value *value) { | |
617 | return json_value_get_type(value) == JSONArray ? value->value.array : NULL; | |
618 | } | |
619 | ||
620 | const char * json_value_get_string(const JSON_Value *value) { | |
621 | return json_value_get_type(value) == JSONString ? value->value.string : NULL; | |
622 | } | |
623 | ||
624 | double json_value_get_number(const JSON_Value *value) { | |
625 | return json_value_get_type(value) == JSONNumber ? value->value.number : 0; | |
626 | } | |
627 | ||
628 | int json_value_get_boolean(const JSON_Value *value) { | |
629 | return json_value_get_type(value) == JSONBoolean ? value->value.boolean : -1; | |
630 | } | |
631 | ||
632 | void json_value_free(JSON_Value *value) { | |
633 | switch (json_value_get_type(value)) { | |
634 | case JSONObject: | |
635 | json_object_free(value->value.object); | |
636 | break; | |
637 | case JSONString: | |
638 | if (value->value.string) { parson_free(value->value.string); } | |
639 | break; | |
640 | case JSONArray: | |
641 | json_array_free(value->value.array); | |
642 | break; | |
643 | default: | |
644 | break; | |
645 | } | |
646 | parson_free(value); | |
647 | } |