150 lines
7.4 KiB
C
150 lines
7.4 KiB
C
/*
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Copyright (c) 2009 Dave Gamble
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef cJSON__h
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#define cJSON__h
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* cJSON Types: */
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#define cJSON_False 0
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#define cJSON_True 1
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#define cJSON_NULL 2
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#define cJSON_Number 3
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#define cJSON_String 4
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#define cJSON_Array 5
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#define cJSON_Object 6
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#define cJSON_IsReference 256
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#define cJSON_StringIsConst 512
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/* The cJSON structure: */
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typedef struct cJSON {
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struct cJSON *next,*prev; /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
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struct cJSON *child; /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
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int type; /* The type of the item, as above. */
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char *valuestring; /* The item's string, if type==cJSON_String */
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int valueint; /* The item's number, if type==cJSON_Number */
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double valuedouble; /* The item's number, if type==cJSON_Number */
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char *string; /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
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} cJSON;
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typedef struct cJSON_Hooks {
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void *(*malloc_fn)(size_t sz);
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void (*free_fn)(void *ptr);
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} cJSON_Hooks;
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/* Supply malloc, realloc and free functions to cJSON */
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extern void cJSON_InitHooks(cJSON_Hooks* hooks);
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/* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */
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extern cJSON *cJSON_Parse(const char *value);
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/* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
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extern char *cJSON_Print(cJSON *item);
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/* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */
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extern char *cJSON_PrintUnformatted(cJSON *item);
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/* 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 */
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extern char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt);
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/* Delete a cJSON entity and all subentities. */
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extern void cJSON_Delete(cJSON *c);
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/* Returns the number of items in an array (or object). */
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extern int cJSON_GetArraySize(cJSON *array);
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/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
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extern cJSON *cJSON_GetArrayItem(cJSON *array,int item);
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/* Get item "string" from object. Case insensitive. */
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extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string);
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/* 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. */
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extern const char *cJSON_GetErrorPtr(void);
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/* These calls create a cJSON item of the appropriate type. */
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extern cJSON *cJSON_CreateNull(void);
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extern cJSON *cJSON_CreateTrue(void);
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extern cJSON *cJSON_CreateFalse(void);
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extern cJSON *cJSON_CreateBool(int b);
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extern cJSON *cJSON_CreateNumber(double num);
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extern cJSON *cJSON_CreateDouble(double num,int i_num);
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extern cJSON *cJSON_CreateString(const char *string);
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extern cJSON *cJSON_CreateArray(void);
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extern cJSON *cJSON_CreateObject(void);
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/* These utilities create an Array of count items. */
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extern cJSON *cJSON_CreateIntArray(const int *numbers,int count);
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extern cJSON *cJSON_CreateFloatArray(const float *numbers,int count);
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extern cJSON *cJSON_CreateDoubleArray(const double *numbers,int count);
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extern cJSON *cJSON_CreateStringArray(const char **strings,int count);
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/* Append item to the specified array/object. */
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extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
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extern void cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item);
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extern void cJSON_AddItemToObjectCS(cJSON *object,const char *string,cJSON *item); /* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object */
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/* 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. */
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extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
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extern void cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item);
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/* Remove/Detatch items from Arrays/Objects. */
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extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which);
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extern void cJSON_DeleteItemFromArray(cJSON *array,int which);
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extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string);
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extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string);
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/* Update array items. */
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extern void cJSON_InsertItemInArray(cJSON *array,int which,cJSON *newitem); /* Shifts pre-existing items to the right. */
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extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);
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extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
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/* Duplicate a cJSON item */
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extern cJSON *cJSON_Duplicate(cJSON *item,int recurse);
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/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
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need to be released. With recurse!=0, it will duplicate any children connected to the item.
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The item->next and ->prev pointers are always zero on return from Duplicate. */
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/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
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extern cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated);
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extern void cJSON_Minify(char *json);
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/* Macros for creating things quickly. */
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#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
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#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
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#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
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#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
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#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
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#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
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/* When assigning an integer value, it needs to be propagated to valuedouble too. */
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#define cJSON_SetIntValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
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#define cJSON_SetNumberValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
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#ifdef __cplusplus
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}
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#endif
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#endif
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