2 Copyright (c) 2009 Dave Gamble
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:
11 The above copyright notice and this permission notice shall be included in
12 all copies or substantial portions of the Software.
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
35 #define cJSON_Number 3
36 #define cJSON_String 4
38 #define cJSON_Object 6
40 #define cJSON_IsReference 256
42 /* The cJSON structure: */
43 typedef struct cJSON {
44 struct cJSON *next,*prev; /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
45 struct cJSON *child; /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
47 int type; /* The type of the item, as above. */
49 char *valuestring; /* The item's string, if type==cJSON_String */
50 int valueint; /* The item's number, if type==cJSON_Number */
51 double valuedouble; /* The item's number, if type==cJSON_Number */
53 char *string; /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
56 typedef struct cJSON_Hooks {
57 void *(*malloc_fn)(size_t sz);
58 void (*free_fn)(void *ptr);
61 /* Supply malloc, realloc and free functions to cJSON */
62 extern void cJSON_InitHooks(cJSON_Hooks* hooks);
65 /* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */
66 extern cJSON *cJSON_Parse(const char *value);
67 /* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
68 extern char *cJSON_Print(cJSON *item);
69 /* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */
70 extern char *cJSON_PrintUnformatted(cJSON *item);
71 /* Delete a cJSON entity and all subentities. */
72 extern void cJSON_Delete(cJSON *c);
74 /* Returns the number of items in an array (or object). */
75 extern int cJSON_GetArraySize(cJSON *array);
76 /* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
77 extern cJSON *cJSON_GetArrayItem(cJSON *array,int item);
78 /* Get item "string" from object. Case insensitive. */
79 extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string);
81 /* 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. */
82 extern const char *cJSON_GetErrorPtr();
84 /* These calls create a cJSON item of the appropriate type. */
85 extern cJSON *cJSON_CreateNull();
86 extern cJSON *cJSON_CreateTrue();
87 extern cJSON *cJSON_CreateFalse();
88 extern cJSON *cJSON_CreateBool(int b);
89 extern cJSON *cJSON_CreateNumber(double num);
90 extern cJSON *cJSON_CreateString(const char *string);
91 extern cJSON *cJSON_CreateArray();
92 extern cJSON *cJSON_CreateObject();
94 /* These utilities create an Array of count items. */
95 extern cJSON *cJSON_CreateIntArray(int *numbers,int count);
96 extern cJSON *cJSON_CreateFloatArray(float *numbers,int count);
97 extern cJSON *cJSON_CreateDoubleArray(double *numbers,int count);
98 extern cJSON *cJSON_CreateStringArray(const char **strings,int count);
100 /* Append item to the specified array/object. */
101 extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
102 extern void cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item);
103 /* 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. */
104 extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
105 extern void cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item);
107 /* Remove/Detatch items from Arrays/Objects. */
108 extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which);
109 extern void cJSON_DeleteItemFromArray(cJSON *array,int which);
110 extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string);
111 extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string);
113 /* Update array items. */
114 extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);
115 extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
117 #define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
118 #define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
119 #define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
120 #define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
121 #define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))