1/*
2  Copyright (c) 2009 Dave Gamble
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/* cJSON Types: */
32#define cJSON_False 0
33#define cJSON_True 1
34#define cJSON_NULL 2
35#define cJSON_Number 3
36#define cJSON_String 4
37#define cJSON_Array 5
38#define cJSON_Object 6
39
40#define cJSON_IsReference 256
41
42/* The cJSON structure: */
43typedef 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. */
46
47	int type;					/* The type of the item, as above. */
48
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 */
52        long long int valuelong;
53
54	char *string;				/* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
55} cJSON;
56
57typedef struct cJSON_Hooks {
58      void *(*malloc_fn)(size_t sz);
59      void (*free_fn)(void *ptr);
60} cJSON_Hooks;
61
62/* Supply malloc, realloc and free functions to cJSON */
63extern void cJSON_InitHooks(cJSON_Hooks* hooks);
64
65
66/* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */
67extern cJSON *cJSON_Parse(const char *value);
68/* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
69extern char  *cJSON_Print(cJSON *item);
70/* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */
71extern char  *cJSON_PrintUnformatted(cJSON *item);
72/* Delete a cJSON entity and all subentities. */
73extern void   cJSON_Delete(cJSON *c);
74
75/* Returns the number of items in an array (or object). */
76extern int	  cJSON_GetArraySize(cJSON *array);
77/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
78extern cJSON *cJSON_GetArrayItem(cJSON *array,int item);
79/* Get item "string" from object. Case insensitive. */
80extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string);
81
82/* 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. */
83extern const char *cJSON_GetErrorPtr();
84
85/* These calls create a cJSON item of the appropriate type. */
86extern cJSON *cJSON_CreateNull();
87extern cJSON *cJSON_CreateTrue();
88extern cJSON *cJSON_CreateFalse();
89extern cJSON *cJSON_CreateBool(int b);
90extern cJSON *cJSON_CreateNumber(double num);
91extern cJSON *cJSON_CreateString(const char *string);
92extern cJSON *cJSON_CreateArray();
93extern cJSON *cJSON_CreateObject();
94
95/* These utilities create an Array of count items. */
96extern cJSON *cJSON_CreateIntArray(int *numbers,int count);
97extern cJSON *cJSON_CreateFloatArray(float *numbers,int count);
98extern cJSON *cJSON_CreateDoubleArray(double *numbers,int count);
99extern cJSON *cJSON_CreateStringArray(const char **strings,int count);
100
101/* Append item to the specified array/object. */
102extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
103extern void	cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item);
104/* 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. */
105extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
106extern void	cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item);
107
108/* Remove/Detatch items from Arrays/Objects. */
109extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which);
110extern void   cJSON_DeleteItemFromArray(cJSON *array,int which);
111extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string);
112extern void   cJSON_DeleteItemFromObject(cJSON *object,const char *string);
113
114/* Update array items. */
115extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);
116extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
117
118#define cJSON_AddNullToObject(object,name)	cJSON_AddItemToObject(object, name, cJSON_CreateNull())
119#define cJSON_AddTrueToObject(object,name)	cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
120#define cJSON_AddFalseToObject(object,name)		cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
121#define cJSON_AddNumberToObject(object,name,n)	cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
122#define cJSON_AddStringToObject(object,name,s)	cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
123
124#ifdef __cplusplus
125}
126#endif
127
128#endif
129