/* cJSON.h * Copyright (c) 2009 Dave Gamble * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * SPDX-License-Identifier: MIT * * Note that this code has been modified from the original code taken * from cjson-code-58.zip. */ #ifndef cJSON_h #define cJSON_h #ifdef __cplusplus extern "C" { #if 0 /*(to make Emacs auto-indent happy)*/ } #endif #endif /* cJSON Types: */ #define cJSON_False 0 #define cJSON_True 1 #define cJSON_NULL 2 #define cJSON_Number 3 #define cJSON_String 4 #define cJSON_Array 5 #define cJSON_Object 6 #define cJSON_IsReference 256 /* The cJSON structure: */ typedef struct cJSON { /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */ struct cJSON *next, *prev; /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */ struct cJSON *child; int type; /* The type of the item, as above. */ char *valuestring; /* The item's string, if type==cJSON_String */ int valueint; /* The item's number, if type==cJSON_Number */ double valuedouble; /* The item's number, if type==cJSON_Number */ /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */ char *string; } cJSON; typedef struct cJSON *cjson_t; /* Macros to test the type of an object. */ #define cjson_is_boolean(a) (!((a)->type & ~1)) #define cjson_is_false(a) ((a)->type == cJSON_False) #define cjson_is_true(a) ((a)->type == cJSON_True) #define cjson_is_null(a) ((a)->type == cJSON_NULL) #define cjson_is_number(a) ((a)->type == cJSON_Number) #define cjson_is_string(a) ((a)->type == cJSON_String) #define cjson_is_array(a) ((a)->type == cJSON_Array) #define cjson_is_object(a) ((a)->type == cJSON_Object) /* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */ extern cJSON *cJSON_Parse(const char *value, size_t *r_erroff); /* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */ extern char *cJSON_Print(cJSON *item); /* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */ extern char *cJSON_PrintUnformatted(cJSON *item); /* Delete a cJSON entity and all subentities. */ extern void cJSON_Delete(cJSON *c); /* Returns the number of items in an array (or object). */ extern int cJSON_GetArraySize(cJSON *array); /* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */ extern cJSON *cJSON_GetArrayItem(cJSON *array,int item); /* Get item "string" from object. Case insensitive. */ extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string); /* These calls create a cJSON item of the appropriate type. */ extern cJSON *cJSON_CreateNull(void); extern cJSON *cJSON_CreateTrue(void); extern cJSON *cJSON_CreateFalse(void); extern cJSON *cJSON_CreateBool(int b); extern cJSON *cJSON_CreateNumber(double num); extern cJSON *cJSON_CreateString(const char *string); extern cJSON *cJSON_CreateStringConvey (char *string); extern cJSON *cJSON_CreateArray(void); extern cJSON *cJSON_CreateObject(void); /* These utilities create an Array of count items. */ extern cJSON *cJSON_CreateIntArray(const int *numbers,int count); extern cJSON *cJSON_CreateFloatArray(const float *numbers,int count); extern cJSON *cJSON_CreateDoubleArray(const double *numbers,int count); extern cJSON *cJSON_CreateStringArray(const char **strings,int count); /* Append item to the specified array. */ extern void cJSON_AddItemToArray(cJSON *array, cJSON *item); /* Append item to the specified object. */ extern cJSON *cJSON_AddItemToObject(cJSON *object, const char *name, cJSON *item); extern cJSON *cJSON_AddNullToObject (cJSON *object, const char *name); extern cJSON *cJSON_AddTrueToObject (cJSON *object, const char *name); extern cJSON *cJSON_AddFalseToObject (cJSON *object, const char *name); extern cJSON *cJSON_AddBoolToObject (cJSON *object, const char *name, int b); extern cJSON *cJSON_AddNumberToObject (cJSON *object, const char *name, double num); extern cJSON *cJSON_AddStringToObject (cJSON *object, const char *name, const char *string); /* 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. */ extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item); extern void cJSON_AddItemReferenceToObject(cJSON *object, const char *string,cJSON *item); /* Remove/Detatch items from Arrays/Objects. */ extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which); extern void cJSON_DeleteItemFromArray(cJSON *array,int which); extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string); extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string); /* Update array items. */ extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem); extern void cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem); /* Duplicate a cJSON item */ extern cJSON *cJSON_Duplicate(cJSON *item,int recurse); /* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will need to be released. With recurse!=0, it will duplicate any children connected to the item. The item->next and ->prev pointers are always zero on return from Duplicate. */ /* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */ extern cJSON *cJSON_ParseWithOpts(const char *value, const char **return_parse_end, int require_null_terminated, size_t *r_erroff); extern void cJSON_Minify(char *json); /* When assigning an integer value, it needs to be propagated to valuedouble too. */ #define cJSON_SetIntValue(object,val) \ ((object)?(object)->valueint=(object)->valuedouble=(val):(val)) #ifdef __cplusplus } #endif #endif /* cJSON_h */