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https://github.com/DaveGamble/cJSON.git
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b3bd706f8f
Based on an idea from Daniel Harcek; these are designed to allow you to replace entries in an object or array with new values. The old values get deleted and the new ones are wired into place. This leads to a structure like this: cJSON_ReplaceItemInObject(myobject, "spooncount", cJSON_CreateNumber(24)); cJSON +NEVER+ type checks, so it's perfectly legal to replace an object with a string (to cJSON) though it may not be in your schema! git-svn-id: http://svn.code.sf.net/p/cjson/code@13 e3330c51-1366-4df0-8b21-3ccf24e3d50e
111 lines
4.5 KiB
C
111 lines
4.5 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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// 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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// 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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// These calls create a cJSON item of the appropriate type.
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extern cJSON *cJSON_CreateNull();
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extern cJSON *cJSON_CreateTrue();
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extern cJSON *cJSON_CreateFalse();
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extern cJSON *cJSON_CreateNumber(double num);
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extern cJSON *cJSON_CreateString(const char *string);
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extern cJSON *cJSON_CreateArray();
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extern cJSON *cJSON_CreateObject();
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// These utilities create an Array of count items.
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extern cJSON *cJSON_CreateIntArray(int *numbers,int count);
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extern cJSON *cJSON_CreateFloatArray(float *numbers,int count);
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extern cJSON *cJSON_CreateDoubleArray(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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// Update array items.
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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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#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_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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#ifdef __cplusplus
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}
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#endif
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#endif
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