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1/*
2 Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
3
4 Permission is hereby granted, free of charge, to any person obtaining a copy
5 of this software and associated documentation files (the "Software"), to deal
6 in the Software without restriction, including without limitation the rights
7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 copies of the Software, and to permit persons to whom the Software is
9 furnished to do so, subject to the following conditions:
10
11 The above copyright notice and this permission notice shall be included in
12 all copies or substantial portions of the Software.
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 THE SOFTWARE.
21*/
22
23#ifndef cJSON__h
24#define cJSON__h
25
26#ifdef __cplusplus
27extern "C"
28{
29#endif
30
31/* project version */
32#define CJSON_VERSION_MAJOR 1
33#define CJSON_VERSION_MINOR 5
34#define CJSON_VERSION_PATCH 7
35
36#include <stddef.h>
37
38/* cJSON Types: */
39#define cJSON_Invalid (0)
40#define cJSON_False (1 << 0)
41#define cJSON_True (1 << 1)
42#define cJSON_NULL (1 << 2)
43#define cJSON_Number (1 << 3)
44#define cJSON_String (1 << 4)
45#define cJSON_Array (1 << 5)
46#define cJSON_Object (1 << 6)
47#define cJSON_Raw (1 << 7) /* raw json */
48
49#define cJSON_IsReference 256
50#define cJSON_StringIsConst 512
51
52/* The cJSON structure: */
53typedef struct cJSON
54{
55 /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
56 struct cJSON *next;
57 struct cJSON *prev;
58 /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
59 struct cJSON *child;
60
61 /* The type of the item, as above. */
62 int type;
63
64 /* The item's string, if type==cJSON_String and type == cJSON_Raw */
65 char *valuestring;
66 /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */
67 int valueint;
68 /* The item's number, if type==cJSON_Number */
69 double valuedouble;
70
71 /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
72 char *string;
73} cJSON;
74
75typedef struct cJSON_Hooks
76{
77 void *(*malloc_fn)(size_t sz);
78 void (*free_fn)(void *ptr);
79} cJSON_Hooks;
80
81typedef int cJSON_bool;
82
83#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
84#define __WINDOWS__
85#endif
86#ifdef __WINDOWS__
87
88/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 2 define options:
89
90CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
91CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
92CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
93
94For *nix builds that support visibility attribute, you can define similar behavior by
95
96setting default visibility to hidden by adding
97-fvisibility=hidden (for gcc)
98or
99-xldscope=hidden (for sun cc)
100to CFLAGS
101
102then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
103
104*/
105
106/* export symbols by default, this is necessary for copy pasting the C and header file */
107#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
108#define CJSON_EXPORT_SYMBOLS
109#endif
110
111#if defined(CJSON_HIDE_SYMBOLS)
112#define CJSON_PUBLIC(type) type __stdcall
113#elif defined(CJSON_EXPORT_SYMBOLS)
114#define CJSON_PUBLIC(type) __declspec(dllexport) type __stdcall
115#elif defined(CJSON_IMPORT_SYMBOLS)
116#define CJSON_PUBLIC(type) __declspec(dllimport) type __stdcall
117#endif
118#else /* !WIN32 */
119#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
120#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type
121#else
122#define CJSON_PUBLIC(type) type
123#endif
124#endif
125
126/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them.
127 * This is to prevent stack overflows. */
128#ifndef CJSON_NESTING_LIMIT
129#define CJSON_NESTING_LIMIT 1000
130#endif
131
132/* returns the version of cJSON as a string */
133CJSON_PUBLIC(const char*) cJSON_Version(void);
134
135/* Supply malloc, realloc and free functions to cJSON */
136CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);
137
138/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */
139/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */
140CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);
141/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
142/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error. If not, then cJSON_GetErrorPtr() does the job. */
143CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
144
145/* Render a cJSON entity to text for transfer/storage. */
146CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item);
147/* Render a cJSON entity to text for transfer/storage without any formatting. */
148CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item);
149/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess at the final size. guessing well reduces reallocation. fmt=0 gives unformatted, =1 gives formatted */
150CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt);
151/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */
152/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
153CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
154/* Delete a cJSON entity and all subentities. */
155CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
156
157/* Returns the number of items in an array (or object). */
158CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
159/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
160CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index);
161/* Get item "string" from object. Case insensitive. */
162CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string);
163CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string);
164CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string);
165/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
166CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
167
168/* These functions check the type of an item */
169CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
170CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item);
171CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item);
172CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item);
173CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item);
174CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item);
175CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item);
176CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item);
177CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item);
178CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item);
179
180/* These calls create a cJSON item of the appropriate type. */
181CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void);
182CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void);
183CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void);
184CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean);
185CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num);
186CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string);
187/* raw json */
188CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
189CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
190CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
191
192/* These utilities create an Array of count items. */
193CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
194CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
195CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
196CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count);
197
198/* Append item to the specified array/object. */
199CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
200CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
201/* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object.
202 * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before
203 * writing to `item->string` */
204CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
205/* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */
206CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
207CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
208
209/* Remove/Detatch items from Arrays/Objects. */
210CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item);
211CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
212CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
213CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string);
214CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string);
215CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string);
216CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string);
217
218/* Update array items. */
219CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
220CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement);
221CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
222CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
223CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
224
225/* Duplicate a cJSON item */
226CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse);
227/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
228need to be released. With recurse!=0, it will duplicate any children connected to the item.
229The item->next and ->prev pointers are always zero on return from Duplicate. */
230/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal.
231 * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */
232CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive);
233
234
235CJSON_PUBLIC(void) cJSON_Minify(char *json);
236
237/* Macros for creating things quickly. */
238#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
239#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
240#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
241#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
242#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
243#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
244#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(s))
245
246/* When assigning an integer value, it needs to be propagated to valuedouble too. */
247#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))
248/* helper for the cJSON_SetNumberValue macro */
249CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number);
250#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))
251
252/* Macro for iterating over an array or object */
253#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next)
254
255/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */
256CJSON_PUBLIC(void *) cJSON_malloc(size_t size);
257CJSON_PUBLIC(void) cJSON_free(void *object);
258
259#ifdef __cplusplus
260}
261#endif
262
263#endif \ No newline at end of file