224 lines
11 KiB
C
224 lines
11 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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/* project version */
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#define CJSON_VERSION_MAJOR 1
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#define CJSON_VERSION_MINOR 3
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#define CJSON_VERSION_PATCH 0
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#include <stddef.h>
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/* cJSON Types: */
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#define cJSON_Invalid (0)
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#define cJSON_False (1 << 0)
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#define cJSON_True (1 << 1)
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#define cJSON_NULL (1 << 2)
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#define cJSON_Number (1 << 3)
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#define cJSON_String (1 << 4)
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#define cJSON_Array (1 << 5)
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#define cJSON_Object (1 << 6)
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#define cJSON_Raw (1 << 7) /* raw json */
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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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{
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/* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
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struct cJSON *next;
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struct cJSON *prev;
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/* 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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struct cJSON *child;
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/* The type of the item, as above. */
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int type;
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/* The item's string, if type==cJSON_String and type == cJSON_Raw */
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char *valuestring;
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/* The item's number, if type==cJSON_Number */
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int valueint;
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/* The item's number, if type==cJSON_Number */
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double valuedouble;
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/* 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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char *string;
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} cJSON;
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typedef struct cJSON_Hooks
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{
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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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#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
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#define __WINDOWS__
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#endif
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#ifdef __WINDOWS__
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/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 2 define options:
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CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
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CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols
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For *nix builds that support visibility attribute, you can define similar behavior by
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setting default visibility to hidden by adding
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-fvisibility=hidden (for gcc)
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or
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-xldscope=hidden (for sun cc)
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to CFLAGS
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then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
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*/
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#if defined(CJSON_HIDE_SYMBOLS)
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#define CJSON_PUBLIC(type) type __stdcall
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#elif defined(CJSON_EXPORT_SYMBOLS)
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#define CJSON_PUBLIC(type) __declspec(dllexport) type __stdcall
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#else
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#define CJSON_PUBLIC(type) __declspec(dllimport) type __stdcall
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#endif
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#else /* !WIN32 */
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#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
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#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type
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#else
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#define CJSON_PUBLIC(type) type
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#endif
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#endif
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/* returns the version of cJSON as a string */
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CJSON_PUBLIC(const char*) cJSON_Version(void);
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/* Supply malloc, realloc and free functions to cJSON */
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CJSON_PUBLIC(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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CJSON_PUBLIC(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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CJSON_PUBLIC(char *) cJSON_Print(const 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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CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const 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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CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, int fmt);
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/* Render a cJSON entity to text using a buffer already allocated in memory with length buf_len. Returns 1 on success and 0 on failure. */
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CJSON_PUBLIC(int) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const int fmt);
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/* Delete a cJSON entity and all subentities. */
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CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
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/* Returns the number of items in an array (or object). */
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CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
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/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
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CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int item);
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/* Get item "string" from object. Case insensitive. */
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CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON *object, const char *string);
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CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON *object, const char *string);
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CJSON_PUBLIC(int) cJSON_HasObjectItem(const 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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CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
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/* These calls create a cJSON item of the appropriate type. */
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CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void);
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CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void);
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CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void);
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CJSON_PUBLIC(cJSON *) cJSON_CreateBool(int b);
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CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num);
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CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string);
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/* raw json */
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CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
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CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
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CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
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/* These utilities create an Array of count items. */
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CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
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CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
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CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
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CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count);
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/* Append item to the specified array/object. */
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CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
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CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
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/* 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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* WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before
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* writing to `item->string` */
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CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
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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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CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
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CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
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/* Remove/Detatch items from Arrays/Objects. */
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CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
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CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
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CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string);
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CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string);
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/* Update array items. */
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CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
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CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
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CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
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/* Duplicate a cJSON item */
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CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const 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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/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error. If not, then cJSON_GetErrorPtr() does the job. */
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CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, int require_null_terminated);
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CJSON_PUBLIC(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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#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(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, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))
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/* helper for the cJSON_SetNumberValue macro */
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CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number);
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#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))
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/* Macro for iterating over an array */
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#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next)
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#ifdef __cplusplus
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}
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#endif
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#endif
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