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[proxmark3-svn] / client / jansson / jansson.h
1 /*
2 * Copyright (c) 2009-2016 Petri Lehtinen <petri@digip.org>
3 *
4 * Jansson is free software; you can redistribute it and/or modify
5 * it under the terms of the MIT license. See LICENSE for details.
6 */
7
8 #ifndef JANSSON_H
9 #define JANSSON_H
10
11 #include <stdio.h>
12 #include <stdlib.h> /* for size_t */
13 #include <stdarg.h>
14
15 #include "jansson_config.h"
16
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20
21 /* version */
22
23 #define JANSSON_MAJOR_VERSION 2
24 #define JANSSON_MINOR_VERSION 12
25 #define JANSSON_MICRO_VERSION 0
26
27 /* Micro version is omitted if it's 0 */
28 #define JANSSON_VERSION "2.12"
29
30 /* Version as a 3-byte hex number, e.g. 0x010201 == 1.2.1. Use this
31 for numeric comparisons, e.g. #if JANSSON_VERSION_HEX >= ... */
32 #define JANSSON_VERSION_HEX ((JANSSON_MAJOR_VERSION << 16) | \
33 (JANSSON_MINOR_VERSION << 8) | \
34 (JANSSON_MICRO_VERSION << 0))
35
36 /* If __atomic or __sync builtins are available the library is thread
37 * safe for all read-only functions plus reference counting. */
38 #if JSON_HAVE_ATOMIC_BUILTINS || JSON_HAVE_SYNC_BUILTINS
39 #define JANSSON_THREAD_SAFE_REFCOUNT 1
40 #endif
41
42 #if defined(__GNUC__) || defined(__clang__)
43 #define JANSSON_ATTRS(...) __attribute__((__VA_ARGS__))
44 #else
45 #define JANSSON_ATTRS(...)
46 #endif
47
48 /* types */
49
50 typedef enum {
51 JSON_OBJECT,
52 JSON_ARRAY,
53 JSON_STRING,
54 JSON_INTEGER,
55 JSON_REAL,
56 JSON_TRUE,
57 JSON_FALSE,
58 JSON_NULL
59 } json_type;
60
61 typedef struct json_t {
62 json_type type;
63 volatile size_t refcount;
64 } json_t;
65
66 #ifndef JANSSON_USING_CMAKE /* disabled if using cmake */
67 #if JSON_INTEGER_IS_LONG_LONG
68 #ifdef _WIN32
69 #define JSON_INTEGER_FORMAT "I64d"
70 #else
71 #define JSON_INTEGER_FORMAT "lld"
72 #endif
73 typedef long long json_int_t;
74 #else
75 #define JSON_INTEGER_FORMAT "ld"
76 typedef long json_int_t;
77 #endif /* JSON_INTEGER_IS_LONG_LONG */
78 #endif
79
80 #define json_typeof(json) ((json)->type)
81 #define json_is_object(json) ((json) && json_typeof(json) == JSON_OBJECT)
82 #define json_is_array(json) ((json) && json_typeof(json) == JSON_ARRAY)
83 #define json_is_string(json) ((json) && json_typeof(json) == JSON_STRING)
84 #define json_is_integer(json) ((json) && json_typeof(json) == JSON_INTEGER)
85 #define json_is_real(json) ((json) && json_typeof(json) == JSON_REAL)
86 #define json_is_number(json) (json_is_integer(json) || json_is_real(json))
87 #define json_is_true(json) ((json) && json_typeof(json) == JSON_TRUE)
88 #define json_is_false(json) ((json) && json_typeof(json) == JSON_FALSE)
89 #define json_boolean_value json_is_true
90 #define json_is_boolean(json) (json_is_true(json) || json_is_false(json))
91 #define json_is_null(json) ((json) && json_typeof(json) == JSON_NULL)
92
93 /* construction, destruction, reference counting */
94
95 json_t *json_object(void);
96 json_t *json_array(void);
97 json_t *json_string(const char *value);
98 json_t *json_stringn(const char *value, size_t len);
99 json_t *json_string_nocheck(const char *value);
100 json_t *json_stringn_nocheck(const char *value, size_t len);
101 json_t *json_integer(json_int_t value);
102 json_t *json_real(double value);
103 json_t *json_true(void);
104 json_t *json_false(void);
105 #define json_boolean(val) ((val) ? json_true() : json_false())
106 json_t *json_null(void);
107
108 /* do not call JSON_INTERNAL_INCREF or JSON_INTERNAL_DECREF directly */
109 #if JSON_HAVE_ATOMIC_BUILTINS
110 #define JSON_INTERNAL_INCREF(json) __atomic_add_fetch(&json->refcount, 1, __ATOMIC_ACQUIRE)
111 #define JSON_INTERNAL_DECREF(json) __atomic_sub_fetch(&json->refcount, 1, __ATOMIC_RELEASE)
112 #elif JSON_HAVE_SYNC_BUILTINS
113 #define JSON_INTERNAL_INCREF(json) __sync_add_and_fetch(&json->refcount, 1)
114 #define JSON_INTERNAL_DECREF(json) __sync_sub_and_fetch(&json->refcount, 1)
115 #else
116 #define JSON_INTERNAL_INCREF(json) (++json->refcount)
117 #define JSON_INTERNAL_DECREF(json) (--json->refcount)
118 #endif
119
120 static JSON_INLINE
121 json_t *json_incref(json_t *json)
122 {
123 if(json && json->refcount != (size_t)-1)
124 JSON_INTERNAL_INCREF(json);
125 return json;
126 }
127
128 /* do not call json_delete directly */
129 void json_delete(json_t *json);
130
131 static JSON_INLINE
132 void json_decref(json_t *json)
133 {
134 if(json && json->refcount != (size_t)-1 && JSON_INTERNAL_DECREF(json) == 0)
135 json_delete(json);
136 }
137
138 #if defined(__GNUC__) || defined(__clang__)
139 static JSON_INLINE
140 void json_decrefp(json_t **json)
141 {
142 if(json) {
143 json_decref(*json);
144 *json = NULL;
145 }
146 }
147
148 #define json_auto_t json_t __attribute__((cleanup(json_decrefp)))
149 #endif
150
151
152 /* error reporting */
153
154 #define JSON_ERROR_TEXT_LENGTH 160
155 #define JSON_ERROR_SOURCE_LENGTH 80
156
157 typedef struct json_error_t {
158 int line;
159 int column;
160 int position;
161 char source[JSON_ERROR_SOURCE_LENGTH];
162 char text[JSON_ERROR_TEXT_LENGTH];
163 } json_error_t;
164
165 enum json_error_code {
166 json_error_unknown,
167 json_error_out_of_memory,
168 json_error_stack_overflow,
169 json_error_cannot_open_file,
170 json_error_invalid_argument,
171 json_error_invalid_utf8,
172 json_error_premature_end_of_input,
173 json_error_end_of_input_expected,
174 json_error_invalid_syntax,
175 json_error_invalid_format,
176 json_error_wrong_type,
177 json_error_null_character,
178 json_error_null_value,
179 json_error_null_byte_in_key,
180 json_error_duplicate_key,
181 json_error_numeric_overflow,
182 json_error_item_not_found,
183 json_error_index_out_of_range
184 };
185
186 static JSON_INLINE enum json_error_code json_error_code(const json_error_t *e) {
187 return (enum json_error_code)e->text[JSON_ERROR_TEXT_LENGTH - 1];
188 }
189
190 /* getters, setters, manipulation */
191
192 void json_object_seed(size_t seed);
193 size_t json_object_size(const json_t *object);
194 json_t *json_object_get(const json_t *object, const char *key) JANSSON_ATTRS(warn_unused_result);
195 int json_object_set_new(json_t *object, const char *key, json_t *value);
196 int json_object_set_new_nocheck(json_t *object, const char *key, json_t *value);
197 int json_object_del(json_t *object, const char *key);
198 int json_object_clear(json_t *object);
199 int json_object_update(json_t *object, json_t *other);
200 int json_object_update_existing(json_t *object, json_t *other);
201 int json_object_update_missing(json_t *object, json_t *other);
202 void *json_object_iter(json_t *object);
203 void *json_object_iter_at(json_t *object, const char *key);
204 void *json_object_key_to_iter(const char *key);
205 void *json_object_iter_next(json_t *object, void *iter);
206 const char *json_object_iter_key(void *iter);
207 json_t *json_object_iter_value(void *iter);
208 int json_object_iter_set_new(json_t *object, void *iter, json_t *value);
209
210 #define json_object_foreach(object, key, value) \
211 for(key = json_object_iter_key(json_object_iter(object)); \
212 key && (value = json_object_iter_value(json_object_key_to_iter(key))); \
213 key = json_object_iter_key(json_object_iter_next(object, json_object_key_to_iter(key))))
214
215 #define json_object_foreach_safe(object, n, key, value) \
216 for(key = json_object_iter_key(json_object_iter(object)), \
217 n = json_object_iter_next(object, json_object_key_to_iter(key)); \
218 key && (value = json_object_iter_value(json_object_key_to_iter(key))); \
219 key = json_object_iter_key(n), \
220 n = json_object_iter_next(object, json_object_key_to_iter(key)))
221
222 #define json_array_foreach(array, index, value) \
223 for(index = 0; \
224 index < json_array_size(array) && (value = json_array_get(array, index)); \
225 index++)
226
227 static JSON_INLINE
228 int json_object_set(json_t *object, const char *key, json_t *value)
229 {
230 return json_object_set_new(object, key, json_incref(value));
231 }
232
233 static JSON_INLINE
234 int json_object_set_nocheck(json_t *object, const char *key, json_t *value)
235 {
236 return json_object_set_new_nocheck(object, key, json_incref(value));
237 }
238
239 static JSON_INLINE
240 int json_object_iter_set(json_t *object, void *iter, json_t *value)
241 {
242 return json_object_iter_set_new(object, iter, json_incref(value));
243 }
244
245 size_t json_array_size(const json_t *array);
246 json_t *json_array_get(const json_t *array, size_t index) JANSSON_ATTRS(warn_unused_result);
247 int json_array_set_new(json_t *array, size_t index, json_t *value);
248 int json_array_append_new(json_t *array, json_t *value);
249 int json_array_insert_new(json_t *array, size_t index, json_t *value);
250 int json_array_remove(json_t *array, size_t index);
251 int json_array_clear(json_t *array);
252 int json_array_extend(json_t *array, json_t *other);
253
254 static JSON_INLINE
255 int json_array_set(json_t *array, size_t ind, json_t *value)
256 {
257 return json_array_set_new(array, ind, json_incref(value));
258 }
259
260 static JSON_INLINE
261 int json_array_append(json_t *array, json_t *value)
262 {
263 return json_array_append_new(array, json_incref(value));
264 }
265
266 static JSON_INLINE
267 int json_array_insert(json_t *array, size_t ind, json_t *value)
268 {
269 return json_array_insert_new(array, ind, json_incref(value));
270 }
271
272 const char *json_string_value(const json_t *string);
273 size_t json_string_length(const json_t *string);
274 json_int_t json_integer_value(const json_t *integer);
275 double json_real_value(const json_t *real);
276 double json_number_value(const json_t *json);
277
278 int json_string_set(json_t *string, const char *value);
279 int json_string_setn(json_t *string, const char *value, size_t len);
280 int json_string_set_nocheck(json_t *string, const char *value);
281 int json_string_setn_nocheck(json_t *string, const char *value, size_t len);
282 int json_integer_set(json_t *integer, json_int_t value);
283 int json_real_set(json_t *real, double value);
284
285 /* pack, unpack */
286
287 json_t *json_pack(const char *fmt, ...) JANSSON_ATTRS(warn_unused_result);
288 json_t *json_pack_ex(json_error_t *error, size_t flags, const char *fmt, ...) JANSSON_ATTRS(warn_unused_result);
289 json_t *json_vpack_ex(json_error_t *error, size_t flags, const char *fmt, va_list ap) JANSSON_ATTRS(warn_unused_result);
290
291 #define JSON_VALIDATE_ONLY 0x1
292 #define JSON_STRICT 0x2
293
294 int json_unpack(json_t *root, const char *fmt, ...);
295 int json_unpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, ...);
296 int json_vunpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, va_list ap);
297
298 /* sprintf */
299
300 json_t *json_sprintf(const char *fmt, ...) JANSSON_ATTRS(warn_unused_result, format(printf, 1, 2));
301 json_t *json_vsprintf(const char *fmt, va_list ap) JANSSON_ATTRS(warn_unused_result, format(printf, 1, 0));
302
303
304 /* equality */
305
306 int json_equal(const json_t *value1, const json_t *value2);
307
308
309 /* copying */
310
311 json_t *json_copy(json_t *value) JANSSON_ATTRS(warn_unused_result);
312 json_t *json_deep_copy(const json_t *value) JANSSON_ATTRS(warn_unused_result);
313
314 json_t *json_path_get(const json_t *json, const char *path);
315 int json_path_set_new(json_t *json, const char *path, json_t *value, size_t flags, json_error_t *error);
316
317 static JSON_INLINE
318 int json_path_set(json_t *json, const char *path, json_t *value, size_t flags, json_error_t *error)
319 {
320 return json_path_set_new(json, path, json_incref(value), flags, error);
321 }
322
323 /* decoding */
324
325 #define JSON_REJECT_DUPLICATES 0x1
326 #define JSON_DISABLE_EOF_CHECK 0x2
327 #define JSON_DECODE_ANY 0x4
328 #define JSON_DECODE_INT_AS_REAL 0x8
329 #define JSON_ALLOW_NUL 0x10
330
331 typedef size_t (*json_load_callback_t)(void *buffer, size_t buflen, void *data);
332
333 json_t *json_loads(const char *input, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
334 json_t *json_loadb(const char *buffer, size_t buflen, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
335 json_t *json_loadf(FILE *input, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
336 json_t *json_loadfd(int input, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
337 json_t *json_load_file(const char *path, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
338 json_t *json_load_callback(json_load_callback_t callback, void *data, size_t flags, json_error_t *error) JANSSON_ATTRS(warn_unused_result);
339
340
341 /* encoding */
342
343 #define JSON_MAX_INDENT 0x1F
344 #define JSON_INDENT(n) ((n) & JSON_MAX_INDENT)
345 #define JSON_COMPACT 0x20
346 #define JSON_ENSURE_ASCII 0x40
347 #define JSON_SORT_KEYS 0x80
348 #define JSON_PRESERVE_ORDER 0x100
349 #define JSON_ENCODE_ANY 0x200
350 #define JSON_ESCAPE_SLASH 0x400
351 #define JSON_REAL_PRECISION(n) (((n) & 0x1F) << 11)
352 #define JSON_EMBED 0x10000
353
354 typedef int (*json_dump_callback_t)(const char *buffer, size_t size, void *data);
355
356 char *json_dumps(const json_t *json, size_t flags) JANSSON_ATTRS(warn_unused_result);
357 size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags);
358 int json_dumpf(const json_t *json, FILE *output, size_t flags);
359 int json_dumpfd(const json_t *json, int output, size_t flags);
360 int json_dump_file(const json_t *json, const char *path, size_t flags);
361 int json_dump_callback(const json_t *json, json_dump_callback_t callback, void *data, size_t flags);
362
363 /* custom memory allocation */
364
365 typedef void *(*json_malloc_t)(size_t);
366 typedef void (*json_free_t)(void *);
367
368 void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn);
369 void json_get_alloc_funcs(json_malloc_t *malloc_fn, json_free_t *free_fn);
370
371 #ifdef __cplusplus
372 }
373 #endif
374
375 #endif
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