From 99e04c027662eefa9a9dc083e767d4d6bdbdfc66 Mon Sep 17 00:00:00 2001 From: dnomd343 Date: Sat, 3 Sep 2022 21:17:31 +0800 Subject: [PATCH] update: cJSON version `1.7.15` --- include/cJSON.h | 586 ++--- src/cJSON.c | 6220 +++++++++++++++++++++++------------------------ 2 files changed, 3403 insertions(+), 3403 deletions(-) diff --git a/include/cJSON.h b/include/cJSON.h index ab5fbd7..92907a2 100644 --- a/include/cJSON.h +++ b/include/cJSON.h @@ -1,293 +1,293 @@ -/* - Copyright (c) 2009-2017 Dave Gamble and cJSON contributors - - 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. -*/ - -#ifndef cJSON__h -#define cJSON__h - -#ifdef __cplusplus -extern "C" -{ -#endif - -#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32)) -#define __WINDOWS__ -#endif - -#ifdef __WINDOWS__ - -/* 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 3 define options: - -CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols -CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default) -CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol - -For *nix builds that support visibility attribute, you can define similar behavior by - -setting default visibility to hidden by adding --fvisibility=hidden (for gcc) -or --xldscope=hidden (for sun cc) -to CFLAGS - -then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does - -*/ - -#define CJSON_CDECL __cdecl -#define CJSON_STDCALL __stdcall - -/* export symbols by default, this is necessary for copy pasting the C and header file */ -#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS) -#define CJSON_EXPORT_SYMBOLS -#endif - -#if defined(CJSON_HIDE_SYMBOLS) -#define CJSON_PUBLIC(type) type CJSON_STDCALL -#elif defined(CJSON_EXPORT_SYMBOLS) -#define CJSON_PUBLIC(type) __declspec(dllexport) type CJSON_STDCALL -#elif defined(CJSON_IMPORT_SYMBOLS) -#define CJSON_PUBLIC(type) __declspec(dllimport) type CJSON_STDCALL -#endif -#else /* !__WINDOWS__ */ -#define CJSON_CDECL -#define CJSON_STDCALL - -#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY) -#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type -#else -#define CJSON_PUBLIC(type) type -#endif -#endif - -/* project version */ -#define CJSON_VERSION_MAJOR 1 -#define CJSON_VERSION_MINOR 7 -#define CJSON_VERSION_PATCH 15 - -#include - -/* cJSON Types: */ -#define cJSON_Invalid (0) -#define cJSON_False (1 << 0) -#define cJSON_True (1 << 1) -#define cJSON_NULL (1 << 2) -#define cJSON_Number (1 << 3) -#define cJSON_String (1 << 4) -#define cJSON_Array (1 << 5) -#define cJSON_Object (1 << 6) -#define cJSON_Raw (1 << 7) /* raw json */ - -#define cJSON_IsReference 256 -#define cJSON_StringIsConst 512 - -/* The cJSON structure: */ -typedef struct cJSON -{ - /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */ - struct cJSON *next; - struct cJSON *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; - - /* The type of the item, as above. */ - int type; - - /* The item's string, if type==cJSON_String and type == cJSON_Raw */ - char *valuestring; - /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */ - int valueint; - /* The item's number, if type==cJSON_Number */ - double valuedouble; - - /* 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_Hooks -{ - /* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */ - void *(CJSON_CDECL *malloc_fn)(size_t sz); - void (CJSON_CDECL *free_fn)(void *ptr); -} cJSON_Hooks; - -typedef int cJSON_bool; - -/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them. - * This is to prevent stack overflows. */ -#ifndef CJSON_NESTING_LIMIT -#define CJSON_NESTING_LIMIT 1000 -#endif - -/* returns the version of cJSON as a string */ -CJSON_PUBLIC(const char*) cJSON_Version(void); - -/* Supply malloc, realloc and free functions to cJSON */ -CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks); - -/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */ -/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */ -CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value); -CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length); -/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */ -/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */ -CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated); -CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated); - -/* Render a cJSON entity to text for transfer/storage. */ -CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item); -/* Render a cJSON entity to text for transfer/storage without any formatting. */ -CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item); -/* 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 */ -CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt); -/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */ -/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */ -CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format); -/* Delete a cJSON entity and all subentities. */ -CJSON_PUBLIC(void) cJSON_Delete(cJSON *item); - -/* Returns the number of items in an array (or object). */ -CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array); -/* Retrieve item number "index" from array "array". Returns NULL if unsuccessful. */ -CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index); -/* Get item "string" from object. Case insensitive. */ -CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string); -CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string); -CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string); -/* 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. */ -CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void); - -/* Check item type and return its value */ -CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item); -CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item); - -/* These functions check the type of an item */ -CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item); -CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item); - -/* These calls create a cJSON item of the appropriate type. */ -CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void); -CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void); -CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void); -CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean); -CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num); -CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string); -/* raw json */ -CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw); -CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void); -CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void); - -/* Create a string where valuestring references a string so - * it will not be freed by cJSON_Delete */ -CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string); -/* Create an object/array that only references it's elements so - * they will not be freed by cJSON_Delete */ -CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child); -CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child); - -/* These utilities create an Array of count items. - * The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/ -CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count); -CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count); -CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count); -CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count); - -/* Append item to the specified array/object. */ -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item); -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(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. - * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before - * writing to `item->string` */ -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item); -/* 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. */ -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item); -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item); - -/* Remove/Detach items from Arrays/Objects. */ -CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item); -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which); -CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which); -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string); -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string); -CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string); -CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string); - -/* Update array items. */ -CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */ -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement); -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem); -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem); -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem); - -/* Duplicate a cJSON item */ -CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool 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. */ -/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal. - * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */ -CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive); - -/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings. - * The input pointer json cannot point to a read-only address area, such as a string constant, - * but should point to a readable and writable address area. */ -CJSON_PUBLIC(void) cJSON_Minify(char *json); - -/* Helper functions for creating and adding items to an object at the same time. - * They return the added item or NULL on failure. */ -CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name); -CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name); -CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name); -CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean); -CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number); -CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string); -CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw); -CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name); -CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name); - -/* When assigning an integer value, it needs to be propagated to valuedouble too. */ -#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number)) -/* helper for the cJSON_SetNumberValue macro */ -CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number); -#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number)) -/* Change the valuestring of a cJSON_String object, only takes effect when type of object is cJSON_String */ -CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring); - -/* Macro for iterating over an array or object */ -#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next) - -/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */ -CJSON_PUBLIC(void *) cJSON_malloc(size_t size); -CJSON_PUBLIC(void) cJSON_free(void *object); - -#ifdef __cplusplus -} -#endif - -#endif +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + 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. +*/ + +#ifndef cJSON__h +#define cJSON__h + +#ifdef __cplusplus +extern "C" +{ +#endif + +#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32)) +#define __WINDOWS__ +#endif + +#ifdef __WINDOWS__ + +/* 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 3 define options: + +CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols +CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default) +CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol + +For *nix builds that support visibility attribute, you can define similar behavior by + +setting default visibility to hidden by adding +-fvisibility=hidden (for gcc) +or +-xldscope=hidden (for sun cc) +to CFLAGS + +then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does + +*/ + +#define CJSON_CDECL __cdecl +#define CJSON_STDCALL __stdcall + +/* export symbols by default, this is necessary for copy pasting the C and header file */ +#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS) +#define CJSON_EXPORT_SYMBOLS +#endif + +#if defined(CJSON_HIDE_SYMBOLS) +#define CJSON_PUBLIC(type) type CJSON_STDCALL +#elif defined(CJSON_EXPORT_SYMBOLS) +#define CJSON_PUBLIC(type) __declspec(dllexport) type CJSON_STDCALL +#elif defined(CJSON_IMPORT_SYMBOLS) +#define CJSON_PUBLIC(type) __declspec(dllimport) type CJSON_STDCALL +#endif +#else /* !__WINDOWS__ */ +#define CJSON_CDECL +#define CJSON_STDCALL + +#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY) +#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type +#else +#define CJSON_PUBLIC(type) type +#endif +#endif + +/* project version */ +#define CJSON_VERSION_MAJOR 1 +#define CJSON_VERSION_MINOR 7 +#define CJSON_VERSION_PATCH 15 + +#include + +/* cJSON Types: */ +#define cJSON_Invalid (0) +#define cJSON_False (1 << 0) +#define cJSON_True (1 << 1) +#define cJSON_NULL (1 << 2) +#define cJSON_Number (1 << 3) +#define cJSON_String (1 << 4) +#define cJSON_Array (1 << 5) +#define cJSON_Object (1 << 6) +#define cJSON_Raw (1 << 7) /* raw json */ + +#define cJSON_IsReference 256 +#define cJSON_StringIsConst 512 + +/* The cJSON structure: */ +typedef struct cJSON +{ + /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */ + struct cJSON *next; + struct cJSON *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; + + /* The type of the item, as above. */ + int type; + + /* The item's string, if type==cJSON_String and type == cJSON_Raw */ + char *valuestring; + /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */ + int valueint; + /* The item's number, if type==cJSON_Number */ + double valuedouble; + + /* 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_Hooks +{ + /* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */ + void *(CJSON_CDECL *malloc_fn)(size_t sz); + void (CJSON_CDECL *free_fn)(void *ptr); +} cJSON_Hooks; + +typedef int cJSON_bool; + +/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them. + * This is to prevent stack overflows. */ +#ifndef CJSON_NESTING_LIMIT +#define CJSON_NESTING_LIMIT 1000 +#endif + +/* returns the version of cJSON as a string */ +CJSON_PUBLIC(const char*) cJSON_Version(void); + +/* Supply malloc, realloc and free functions to cJSON */ +CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks); + +/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */ +/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */ +CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value); +CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length); +/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */ +/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */ +CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated); +CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated); + +/* Render a cJSON entity to text for transfer/storage. */ +CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item); +/* Render a cJSON entity to text for transfer/storage without any formatting. */ +CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item); +/* 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 */ +CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt); +/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */ +/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */ +CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format); +/* Delete a cJSON entity and all subentities. */ +CJSON_PUBLIC(void) cJSON_Delete(cJSON *item); + +/* Returns the number of items in an array (or object). */ +CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array); +/* Retrieve item number "index" from array "array". Returns NULL if unsuccessful. */ +CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index); +/* Get item "string" from object. Case insensitive. */ +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string); +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string); +CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string); +/* 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. */ +CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void); + +/* Check item type and return its value */ +CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item); +CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item); + +/* These functions check the type of an item */ +CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item); + +/* These calls create a cJSON item of the appropriate type. */ +CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean); +CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num); +CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string); +/* raw json */ +CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw); +CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void); + +/* Create a string where valuestring references a string so + * it will not be freed by cJSON_Delete */ +CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string); +/* Create an object/array that only references it's elements so + * they will not be freed by cJSON_Delete */ +CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child); +CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child); + +/* These utilities create an Array of count items. + * The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/ +CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count); + +/* Append item to the specified array/object. */ +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item); +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(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. + * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before + * writing to `item->string` */ +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item); +/* 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. */ +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item); +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item); + +/* Remove/Detach items from Arrays/Objects. */ +CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which); +CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string); +CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string); +CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string); + +/* Update array items. */ +CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */ +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement); +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem); +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem); +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem); + +/* Duplicate a cJSON item */ +CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool 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. */ +/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal. + * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */ +CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive); + +/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings. + * The input pointer json cannot point to a read-only address area, such as a string constant, + * but should point to a readable and writable address area. */ +CJSON_PUBLIC(void) cJSON_Minify(char *json); + +/* Helper functions for creating and adding items to an object at the same time. + * They return the added item or NULL on failure. */ +CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name); +CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name); +CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name); +CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean); +CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number); +CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string); +CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw); +CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name); +CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name); + +/* When assigning an integer value, it needs to be propagated to valuedouble too. */ +#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number)) +/* helper for the cJSON_SetNumberValue macro */ +CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number); +#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number)) +/* Change the valuestring of a cJSON_String object, only takes effect when type of object is cJSON_String */ +CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring); + +/* Macro for iterating over an array or object */ +#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next) + +/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */ +CJSON_PUBLIC(void *) cJSON_malloc(size_t size); +CJSON_PUBLIC(void) cJSON_free(void *object); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/cJSON.c b/src/cJSON.c index 5283936..3063f74 100644 --- a/src/cJSON.c +++ b/src/cJSON.c @@ -1,3110 +1,3110 @@ -/* - Copyright (c) 2009-2017 Dave Gamble and cJSON contributors - - 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. -*/ - -/* cJSON */ -/* JSON parser in C. */ - -/* disable warnings about old C89 functions in MSVC */ -#if !defined(_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER) -#define _CRT_SECURE_NO_DEPRECATE -#endif - -#ifdef __GNUC__ -#pragma GCC visibility push(default) -#endif -#if defined(_MSC_VER) -#pragma warning (push) -/* disable warning about single line comments in system headers */ -#pragma warning (disable : 4001) -#endif - -#include -#include -#include -#include -#include -#include -#include - -#ifdef ENABLE_LOCALES -#include -#endif - -#if defined(_MSC_VER) -#pragma warning (pop) -#endif -#ifdef __GNUC__ -#pragma GCC visibility pop -#endif - -#include "cJSON.h" - -/* define our own boolean type */ -#ifdef true -#undef true -#endif -#define true ((cJSON_bool)1) - -#ifdef false -#undef false -#endif -#define false ((cJSON_bool)0) - -/* define isnan and isinf for ANSI C, if in C99 or above, isnan and isinf has been defined in math.h */ -#ifndef isinf -#define isinf(d) (isnan((d - d)) && !isnan(d)) -#endif -#ifndef isnan -#define isnan(d) (d != d) -#endif - -#ifndef NAN -#ifdef _WIN32 -#define NAN sqrt(-1.0) -#else -#define NAN 0.0/0.0 -#endif -#endif - -typedef struct { - const unsigned char *json; - size_t position; -} error; -static error global_error = { NULL, 0 }; - -CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void) -{ - return (const char*) (global_error.json + global_error.position); -} - -CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item) -{ - if (!cJSON_IsString(item)) - { - return NULL; - } - - return item->valuestring; -} - -CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item) -{ - if (!cJSON_IsNumber(item)) - { - return (double) NAN; - } - - return item->valuedouble; -} - -/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */ -#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 15) - #error cJSON.h and cJSON.c have different versions. Make sure that both have the same. -#endif - -CJSON_PUBLIC(const char*) cJSON_Version(void) -{ - static char version[15]; - sprintf(version, "%i.%i.%i", CJSON_VERSION_MAJOR, CJSON_VERSION_MINOR, CJSON_VERSION_PATCH); - - return version; -} - -/* Case insensitive string comparison, doesn't consider two NULL pointers equal though */ -static int case_insensitive_strcmp(const unsigned char *string1, const unsigned char *string2) -{ - if ((string1 == NULL) || (string2 == NULL)) - { - return 1; - } - - if (string1 == string2) - { - return 0; - } - - for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++) - { - if (*string1 == '\0') - { - return 0; - } - } - - return tolower(*string1) - tolower(*string2); -} - -typedef struct internal_hooks -{ - void *(CJSON_CDECL *allocate)(size_t size); - void (CJSON_CDECL *deallocate)(void *pointer); - void *(CJSON_CDECL *reallocate)(void *pointer, size_t size); -} internal_hooks; - -#if defined(_MSC_VER) -/* work around MSVC error C2322: '...' address of dllimport '...' is not static */ -static void * CJSON_CDECL internal_malloc(size_t size) -{ - return malloc(size); -} -static void CJSON_CDECL internal_free(void *pointer) -{ - free(pointer); -} -static void * CJSON_CDECL internal_realloc(void *pointer, size_t size) -{ - return realloc(pointer, size); -} -#else -#define internal_malloc malloc -#define internal_free free -#define internal_realloc realloc -#endif - -/* strlen of character literals resolved at compile time */ -#define static_strlen(string_literal) (sizeof(string_literal) - sizeof("")) - -static internal_hooks global_hooks = { internal_malloc, internal_free, internal_realloc }; - -static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks) -{ - size_t length = 0; - unsigned char *copy = NULL; - - if (string == NULL) - { - return NULL; - } - - length = strlen((const char*)string) + sizeof(""); - copy = (unsigned char*)hooks->allocate(length); - if (copy == NULL) - { - return NULL; - } - memcpy(copy, string, length); - - return copy; -} - -CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks) -{ - if (hooks == NULL) - { - /* Reset hooks */ - global_hooks.allocate = malloc; - global_hooks.deallocate = free; - global_hooks.reallocate = realloc; - return; - } - - global_hooks.allocate = malloc; - if (hooks->malloc_fn != NULL) - { - global_hooks.allocate = hooks->malloc_fn; - } - - global_hooks.deallocate = free; - if (hooks->free_fn != NULL) - { - global_hooks.deallocate = hooks->free_fn; - } - - /* use realloc only if both free and malloc are used */ - global_hooks.reallocate = NULL; - if ((global_hooks.allocate == malloc) && (global_hooks.deallocate == free)) - { - global_hooks.reallocate = realloc; - } -} - -/* Internal constructor. */ -static cJSON *cJSON_New_Item(const internal_hooks * const hooks) -{ - cJSON* node = (cJSON*)hooks->allocate(sizeof(cJSON)); - if (node) - { - memset(node, '\0', sizeof(cJSON)); - } - - return node; -} - -/* Delete a cJSON structure. */ -CJSON_PUBLIC(void) cJSON_Delete(cJSON *item) -{ - cJSON *next = NULL; - while (item != NULL) - { - next = item->next; - if (!(item->type & cJSON_IsReference) && (item->child != NULL)) - { - cJSON_Delete(item->child); - } - if (!(item->type & cJSON_IsReference) && (item->valuestring != NULL)) - { - global_hooks.deallocate(item->valuestring); - } - if (!(item->type & cJSON_StringIsConst) && (item->string != NULL)) - { - global_hooks.deallocate(item->string); - } - global_hooks.deallocate(item); - item = next; - } -} - -/* get the decimal point character of the current locale */ -static unsigned char get_decimal_point(void) -{ -#ifdef ENABLE_LOCALES - struct lconv *lconv = localeconv(); - return (unsigned char) lconv->decimal_point[0]; -#else - return '.'; -#endif -} - -typedef struct -{ - const unsigned char *content; - size_t length; - size_t offset; - size_t depth; /* How deeply nested (in arrays/objects) is the input at the current offset. */ - internal_hooks hooks; -} parse_buffer; - -/* check if the given size is left to read in a given parse buffer (starting with 1) */ -#define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length)) -/* check if the buffer can be accessed at the given index (starting with 0) */ -#define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length)) -#define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index)) -/* get a pointer to the buffer at the position */ -#define buffer_at_offset(buffer) ((buffer)->content + (buffer)->offset) - -/* Parse the input text to generate a number, and populate the result into item. */ -static cJSON_bool parse_number(cJSON * const item, parse_buffer * const input_buffer) -{ - double number = 0; - unsigned char *after_end = NULL; - unsigned char number_c_string[64]; - unsigned char decimal_point = get_decimal_point(); - size_t i = 0; - - if ((input_buffer == NULL) || (input_buffer->content == NULL)) - { - return false; - } - - /* copy the number into a temporary buffer and replace '.' with the decimal point - * of the current locale (for strtod) - * This also takes care of '\0' not necessarily being available for marking the end of the input */ - for (i = 0; (i < (sizeof(number_c_string) - 1)) && can_access_at_index(input_buffer, i); i++) - { - switch (buffer_at_offset(input_buffer)[i]) - { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - case '+': - case '-': - case 'e': - case 'E': - number_c_string[i] = buffer_at_offset(input_buffer)[i]; - break; - - case '.': - number_c_string[i] = decimal_point; - break; - - default: - goto loop_end; - } - } -loop_end: - number_c_string[i] = '\0'; - - number = strtod((const char*)number_c_string, (char**)&after_end); - if (number_c_string == after_end) - { - return false; /* parse_error */ - } - - item->valuedouble = number; - - /* use saturation in case of overflow */ - if (number >= INT_MAX) - { - item->valueint = INT_MAX; - } - else if (number <= (double)INT_MIN) - { - item->valueint = INT_MIN; - } - else - { - item->valueint = (int)number; - } - - item->type = cJSON_Number; - - input_buffer->offset += (size_t)(after_end - number_c_string); - return true; -} - -/* don't ask me, but the original cJSON_SetNumberValue returns an integer or double */ -CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number) -{ - if (number >= INT_MAX) - { - object->valueint = INT_MAX; - } - else if (number <= (double)INT_MIN) - { - object->valueint = INT_MIN; - } - else - { - object->valueint = (int)number; - } - - return object->valuedouble = number; -} - -CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring) -{ - char *copy = NULL; - /* if object's type is not cJSON_String or is cJSON_IsReference, it should not set valuestring */ - if (!(object->type & cJSON_String) || (object->type & cJSON_IsReference)) - { - return NULL; - } - if (strlen(valuestring) <= strlen(object->valuestring)) - { - strcpy(object->valuestring, valuestring); - return object->valuestring; - } - copy = (char*) cJSON_strdup((const unsigned char*)valuestring, &global_hooks); - if (copy == NULL) - { - return NULL; - } - if (object->valuestring != NULL) - { - cJSON_free(object->valuestring); - } - object->valuestring = copy; - - return copy; -} - -typedef struct -{ - unsigned char *buffer; - size_t length; - size_t offset; - size_t depth; /* current nesting depth (for formatted printing) */ - cJSON_bool noalloc; - cJSON_bool format; /* is this print a formatted print */ - internal_hooks hooks; -} printbuffer; - -/* realloc printbuffer if necessary to have at least "needed" bytes more */ -static unsigned char* ensure(printbuffer * const p, size_t needed) -{ - unsigned char *newbuffer = NULL; - size_t newsize = 0; - - if ((p == NULL) || (p->buffer == NULL)) - { - return NULL; - } - - if ((p->length > 0) && (p->offset >= p->length)) - { - /* make sure that offset is valid */ - return NULL; - } - - if (needed > INT_MAX) - { - /* sizes bigger than INT_MAX are currently not supported */ - return NULL; - } - - needed += p->offset + 1; - if (needed <= p->length) - { - return p->buffer + p->offset; - } - - if (p->noalloc) { - return NULL; - } - - /* calculate new buffer size */ - if (needed > (INT_MAX / 2)) - { - /* overflow of int, use INT_MAX if possible */ - if (needed <= INT_MAX) - { - newsize = INT_MAX; - } - else - { - return NULL; - } - } - else - { - newsize = needed * 2; - } - - if (p->hooks.reallocate != NULL) - { - /* reallocate with realloc if available */ - newbuffer = (unsigned char*)p->hooks.reallocate(p->buffer, newsize); - if (newbuffer == NULL) - { - p->hooks.deallocate(p->buffer); - p->length = 0; - p->buffer = NULL; - - return NULL; - } - } - else - { - /* otherwise reallocate manually */ - newbuffer = (unsigned char*)p->hooks.allocate(newsize); - if (!newbuffer) - { - p->hooks.deallocate(p->buffer); - p->length = 0; - p->buffer = NULL; - - return NULL; - } - - memcpy(newbuffer, p->buffer, p->offset + 1); - p->hooks.deallocate(p->buffer); - } - p->length = newsize; - p->buffer = newbuffer; - - return newbuffer + p->offset; -} - -/* calculate the new length of the string in a printbuffer and update the offset */ -static void update_offset(printbuffer * const buffer) -{ - const unsigned char *buffer_pointer = NULL; - if ((buffer == NULL) || (buffer->buffer == NULL)) - { - return; - } - buffer_pointer = buffer->buffer + buffer->offset; - - buffer->offset += strlen((const char*)buffer_pointer); -} - -/* securely comparison of floating-point variables */ -static cJSON_bool compare_double(double a, double b) -{ - double maxVal = fabs(a) > fabs(b) ? fabs(a) : fabs(b); - return (fabs(a - b) <= maxVal * DBL_EPSILON); -} - -/* Render the number nicely from the given item into a string. */ -static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer) -{ - unsigned char *output_pointer = NULL; - double d = item->valuedouble; - int length = 0; - size_t i = 0; - unsigned char number_buffer[26] = {0}; /* temporary buffer to print the number into */ - unsigned char decimal_point = get_decimal_point(); - double test = 0.0; - - if (output_buffer == NULL) - { - return false; - } - - /* This checks for NaN and Infinity */ - if (isnan(d) || isinf(d)) - { - length = sprintf((char*)number_buffer, "null"); - } - else - { - /* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */ - length = sprintf((char*)number_buffer, "%1.15g", d); - - /* Check whether the original double can be recovered */ - if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || !compare_double((double)test, d)) - { - /* If not, print with 17 decimal places of precision */ - length = sprintf((char*)number_buffer, "%1.17g", d); - } - } - - /* sprintf failed or buffer overrun occurred */ - if ((length < 0) || (length > (int)(sizeof(number_buffer) - 1))) - { - return false; - } - - /* reserve appropriate space in the output */ - output_pointer = ensure(output_buffer, (size_t)length + sizeof("")); - if (output_pointer == NULL) - { - return false; - } - - /* copy the printed number to the output and replace locale - * dependent decimal point with '.' */ - for (i = 0; i < ((size_t)length); i++) - { - if (number_buffer[i] == decimal_point) - { - output_pointer[i] = '.'; - continue; - } - - output_pointer[i] = number_buffer[i]; - } - output_pointer[i] = '\0'; - - output_buffer->offset += (size_t)length; - - return true; -} - -/* parse 4 digit hexadecimal number */ -static unsigned parse_hex4(const unsigned char * const input) -{ - unsigned int h = 0; - size_t i = 0; - - for (i = 0; i < 4; i++) - { - /* parse digit */ - if ((input[i] >= '0') && (input[i] <= '9')) - { - h += (unsigned int) input[i] - '0'; - } - else if ((input[i] >= 'A') && (input[i] <= 'F')) - { - h += (unsigned int) 10 + input[i] - 'A'; - } - else if ((input[i] >= 'a') && (input[i] <= 'f')) - { - h += (unsigned int) 10 + input[i] - 'a'; - } - else /* invalid */ - { - return 0; - } - - if (i < 3) - { - /* shift left to make place for the next nibble */ - h = h << 4; - } - } - - return h; -} - -/* converts a UTF-16 literal to UTF-8 - * A literal can be one or two sequences of the form \uXXXX */ -static unsigned char utf16_literal_to_utf8(const unsigned char * const input_pointer, const unsigned char * const input_end, unsigned char **output_pointer) -{ - long unsigned int codepoint = 0; - unsigned int first_code = 0; - const unsigned char *first_sequence = input_pointer; - unsigned char utf8_length = 0; - unsigned char utf8_position = 0; - unsigned char sequence_length = 0; - unsigned char first_byte_mark = 0; - - if ((input_end - first_sequence) < 6) - { - /* input ends unexpectedly */ - goto fail; - } - - /* get the first utf16 sequence */ - first_code = parse_hex4(first_sequence + 2); - - /* check that the code is valid */ - if (((first_code >= 0xDC00) && (first_code <= 0xDFFF))) - { - goto fail; - } - - /* UTF16 surrogate pair */ - if ((first_code >= 0xD800) && (first_code <= 0xDBFF)) - { - const unsigned char *second_sequence = first_sequence + 6; - unsigned int second_code = 0; - sequence_length = 12; /* \uXXXX\uXXXX */ - - if ((input_end - second_sequence) < 6) - { - /* input ends unexpectedly */ - goto fail; - } - - if ((second_sequence[0] != '\\') || (second_sequence[1] != 'u')) - { - /* missing second half of the surrogate pair */ - goto fail; - } - - /* get the second utf16 sequence */ - second_code = parse_hex4(second_sequence + 2); - /* check that the code is valid */ - if ((second_code < 0xDC00) || (second_code > 0xDFFF)) - { - /* invalid second half of the surrogate pair */ - goto fail; - } - - - /* calculate the unicode codepoint from the surrogate pair */ - codepoint = 0x10000 + (((first_code & 0x3FF) << 10) | (second_code & 0x3FF)); - } - else - { - sequence_length = 6; /* \uXXXX */ - codepoint = first_code; - } - - /* encode as UTF-8 - * takes at maximum 4 bytes to encode: - * 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ - if (codepoint < 0x80) - { - /* normal ascii, encoding 0xxxxxxx */ - utf8_length = 1; - } - else if (codepoint < 0x800) - { - /* two bytes, encoding 110xxxxx 10xxxxxx */ - utf8_length = 2; - first_byte_mark = 0xC0; /* 11000000 */ - } - else if (codepoint < 0x10000) - { - /* three bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx */ - utf8_length = 3; - first_byte_mark = 0xE0; /* 11100000 */ - } - else if (codepoint <= 0x10FFFF) - { - /* four bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx 10xxxxxx */ - utf8_length = 4; - first_byte_mark = 0xF0; /* 11110000 */ - } - else - { - /* invalid unicode codepoint */ - goto fail; - } - - /* encode as utf8 */ - for (utf8_position = (unsigned char)(utf8_length - 1); utf8_position > 0; utf8_position--) - { - /* 10xxxxxx */ - (*output_pointer)[utf8_position] = (unsigned char)((codepoint | 0x80) & 0xBF); - codepoint >>= 6; - } - /* encode first byte */ - if (utf8_length > 1) - { - (*output_pointer)[0] = (unsigned char)((codepoint | first_byte_mark) & 0xFF); - } - else - { - (*output_pointer)[0] = (unsigned char)(codepoint & 0x7F); - } - - *output_pointer += utf8_length; - - return sequence_length; - -fail: - return 0; -} - -/* Parse the input text into an unescaped cinput, and populate item. */ -static cJSON_bool parse_string(cJSON * const item, parse_buffer * const input_buffer) -{ - const unsigned char *input_pointer = buffer_at_offset(input_buffer) + 1; - const unsigned char *input_end = buffer_at_offset(input_buffer) + 1; - unsigned char *output_pointer = NULL; - unsigned char *output = NULL; - - /* not a string */ - if (buffer_at_offset(input_buffer)[0] != '\"') - { - goto fail; - } - - { - /* calculate approximate size of the output (overestimate) */ - size_t allocation_length = 0; - size_t skipped_bytes = 0; - while (((size_t)(input_end - input_buffer->content) < input_buffer->length) && (*input_end != '\"')) - { - /* is escape sequence */ - if (input_end[0] == '\\') - { - if ((size_t)(input_end + 1 - input_buffer->content) >= input_buffer->length) - { - /* prevent buffer overflow when last input character is a backslash */ - goto fail; - } - skipped_bytes++; - input_end++; - } - input_end++; - } - if (((size_t)(input_end - input_buffer->content) >= input_buffer->length) || (*input_end != '\"')) - { - goto fail; /* string ended unexpectedly */ - } - - /* This is at most how much we need for the output */ - allocation_length = (size_t) (input_end - buffer_at_offset(input_buffer)) - skipped_bytes; - output = (unsigned char*)input_buffer->hooks.allocate(allocation_length + sizeof("")); - if (output == NULL) - { - goto fail; /* allocation failure */ - } - } - - output_pointer = output; - /* loop through the string literal */ - while (input_pointer < input_end) - { - if (*input_pointer != '\\') - { - *output_pointer++ = *input_pointer++; - } - /* escape sequence */ - else - { - unsigned char sequence_length = 2; - if ((input_end - input_pointer) < 1) - { - goto fail; - } - - switch (input_pointer[1]) - { - case 'b': - *output_pointer++ = '\b'; - break; - case 'f': - *output_pointer++ = '\f'; - break; - case 'n': - *output_pointer++ = '\n'; - break; - case 'r': - *output_pointer++ = '\r'; - break; - case 't': - *output_pointer++ = '\t'; - break; - case '\"': - case '\\': - case '/': - *output_pointer++ = input_pointer[1]; - break; - - /* UTF-16 literal */ - case 'u': - sequence_length = utf16_literal_to_utf8(input_pointer, input_end, &output_pointer); - if (sequence_length == 0) - { - /* failed to convert UTF16-literal to UTF-8 */ - goto fail; - } - break; - - default: - goto fail; - } - input_pointer += sequence_length; - } - } - - /* zero terminate the output */ - *output_pointer = '\0'; - - item->type = cJSON_String; - item->valuestring = (char*)output; - - input_buffer->offset = (size_t) (input_end - input_buffer->content); - input_buffer->offset++; - - return true; - -fail: - if (output != NULL) - { - input_buffer->hooks.deallocate(output); - } - - if (input_pointer != NULL) - { - input_buffer->offset = (size_t)(input_pointer - input_buffer->content); - } - - return false; -} - -/* Render the cstring provided to an escaped version that can be printed. */ -static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffer * const output_buffer) -{ - const unsigned char *input_pointer = NULL; - unsigned char *output = NULL; - unsigned char *output_pointer = NULL; - size_t output_length = 0; - /* numbers of additional characters needed for escaping */ - size_t escape_characters = 0; - - if (output_buffer == NULL) - { - return false; - } - - /* empty string */ - if (input == NULL) - { - output = ensure(output_buffer, sizeof("\"\"")); - if (output == NULL) - { - return false; - } - strcpy((char*)output, "\"\""); - - return true; - } - - /* set "flag" to 1 if something needs to be escaped */ - for (input_pointer = input; *input_pointer; input_pointer++) - { - switch (*input_pointer) - { - case '\"': - case '\\': - case '\b': - case '\f': - case '\n': - case '\r': - case '\t': - /* one character escape sequence */ - escape_characters++; - break; - default: - if (*input_pointer < 32) - { - /* UTF-16 escape sequence uXXXX */ - escape_characters += 5; - } - break; - } - } - output_length = (size_t)(input_pointer - input) + escape_characters; - - output = ensure(output_buffer, output_length + sizeof("\"\"")); - if (output == NULL) - { - return false; - } - - /* no characters have to be escaped */ - if (escape_characters == 0) - { - output[0] = '\"'; - memcpy(output + 1, input, output_length); - output[output_length + 1] = '\"'; - output[output_length + 2] = '\0'; - - return true; - } - - output[0] = '\"'; - output_pointer = output + 1; - /* copy the string */ - for (input_pointer = input; *input_pointer != '\0'; (void)input_pointer++, output_pointer++) - { - if ((*input_pointer > 31) && (*input_pointer != '\"') && (*input_pointer != '\\')) - { - /* normal character, copy */ - *output_pointer = *input_pointer; - } - else - { - /* character needs to be escaped */ - *output_pointer++ = '\\'; - switch (*input_pointer) - { - case '\\': - *output_pointer = '\\'; - break; - case '\"': - *output_pointer = '\"'; - break; - case '\b': - *output_pointer = 'b'; - break; - case '\f': - *output_pointer = 'f'; - break; - case '\n': - *output_pointer = 'n'; - break; - case '\r': - *output_pointer = 'r'; - break; - case '\t': - *output_pointer = 't'; - break; - default: - /* escape and print as unicode codepoint */ - sprintf((char*)output_pointer, "u%04x", *input_pointer); - output_pointer += 4; - break; - } - } - } - output[output_length + 1] = '\"'; - output[output_length + 2] = '\0'; - - return true; -} - -/* Invoke print_string_ptr (which is useful) on an item. */ -static cJSON_bool print_string(const cJSON * const item, printbuffer * const p) -{ - return print_string_ptr((unsigned char*)item->valuestring, p); -} - -/* Predeclare these prototypes. */ -static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer); -static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer); -static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer); -static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer); -static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer); -static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer); - -/* Utility to jump whitespace and cr/lf */ -static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer) -{ - if ((buffer == NULL) || (buffer->content == NULL)) - { - return NULL; - } - - if (cannot_access_at_index(buffer, 0)) - { - return buffer; - } - - while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32)) - { - buffer->offset++; - } - - if (buffer->offset == buffer->length) - { - buffer->offset--; - } - - return buffer; -} - -/* skip the UTF-8 BOM (byte order mark) if it is at the beginning of a buffer */ -static parse_buffer *skip_utf8_bom(parse_buffer * const buffer) -{ - if ((buffer == NULL) || (buffer->content == NULL) || (buffer->offset != 0)) - { - return NULL; - } - - if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0)) - { - buffer->offset += 3; - } - - return buffer; -} - -CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated) -{ - size_t buffer_length; - - if (NULL == value) - { - return NULL; - } - - /* Adding null character size due to require_null_terminated. */ - buffer_length = strlen(value) + sizeof(""); - - return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated); -} - -/* Parse an object - create a new root, and populate. */ -CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated) -{ - parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } }; - cJSON *item = NULL; - - /* reset error position */ - global_error.json = NULL; - global_error.position = 0; - - if (value == NULL || 0 == buffer_length) - { - goto fail; - } - - buffer.content = (const unsigned char*)value; - buffer.length = buffer_length; - buffer.offset = 0; - buffer.hooks = global_hooks; - - item = cJSON_New_Item(&global_hooks); - if (item == NULL) /* memory fail */ - { - goto fail; - } - - if (!parse_value(item, buffer_skip_whitespace(skip_utf8_bom(&buffer)))) - { - /* parse failure. ep is set. */ - goto fail; - } - - /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */ - if (require_null_terminated) - { - buffer_skip_whitespace(&buffer); - if ((buffer.offset >= buffer.length) || buffer_at_offset(&buffer)[0] != '\0') - { - goto fail; - } - } - if (return_parse_end) - { - *return_parse_end = (const char*)buffer_at_offset(&buffer); - } - - return item; - -fail: - if (item != NULL) - { - cJSON_Delete(item); - } - - if (value != NULL) - { - error local_error; - local_error.json = (const unsigned char*)value; - local_error.position = 0; - - if (buffer.offset < buffer.length) - { - local_error.position = buffer.offset; - } - else if (buffer.length > 0) - { - local_error.position = buffer.length - 1; - } - - if (return_parse_end != NULL) - { - *return_parse_end = (const char*)local_error.json + local_error.position; - } - - global_error = local_error; - } - - return NULL; -} - -/* Default options for cJSON_Parse */ -CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value) -{ - return cJSON_ParseWithOpts(value, 0, 0); -} - -CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length) -{ - return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0); -} - -#define cjson_min(a, b) (((a) < (b)) ? (a) : (b)) - -static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks) -{ - static const size_t default_buffer_size = 256; - printbuffer buffer[1]; - unsigned char *printed = NULL; - - memset(buffer, 0, sizeof(buffer)); - - /* create buffer */ - buffer->buffer = (unsigned char*) hooks->allocate(default_buffer_size); - buffer->length = default_buffer_size; - buffer->format = format; - buffer->hooks = *hooks; - if (buffer->buffer == NULL) - { - goto fail; - } - - /* print the value */ - if (!print_value(item, buffer)) - { - goto fail; - } - update_offset(buffer); - - /* check if reallocate is available */ - if (hooks->reallocate != NULL) - { - printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->offset + 1); - if (printed == NULL) { - goto fail; - } - buffer->buffer = NULL; - } - else /* otherwise copy the JSON over to a new buffer */ - { - printed = (unsigned char*) hooks->allocate(buffer->offset + 1); - if (printed == NULL) - { - goto fail; - } - memcpy(printed, buffer->buffer, cjson_min(buffer->length, buffer->offset + 1)); - printed[buffer->offset] = '\0'; /* just to be sure */ - - /* free the buffer */ - hooks->deallocate(buffer->buffer); - } - - return printed; - -fail: - if (buffer->buffer != NULL) - { - hooks->deallocate(buffer->buffer); - } - - if (printed != NULL) - { - hooks->deallocate(printed); - } - - return NULL; -} - -/* Render a cJSON item/entity/structure to text. */ -CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item) -{ - return (char*)print(item, true, &global_hooks); -} - -CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item) -{ - return (char*)print(item, false, &global_hooks); -} - -CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt) -{ - printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; - - if (prebuffer < 0) - { - return NULL; - } - - p.buffer = (unsigned char*)global_hooks.allocate((size_t)prebuffer); - if (!p.buffer) - { - return NULL; - } - - p.length = (size_t)prebuffer; - p.offset = 0; - p.noalloc = false; - p.format = fmt; - p.hooks = global_hooks; - - if (!print_value(item, &p)) - { - global_hooks.deallocate(p.buffer); - return NULL; - } - - return (char*)p.buffer; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format) -{ - printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; - - if ((length < 0) || (buffer == NULL)) - { - return false; - } - - p.buffer = (unsigned char*)buffer; - p.length = (size_t)length; - p.offset = 0; - p.noalloc = true; - p.format = format; - p.hooks = global_hooks; - - return print_value(item, &p); -} - -/* Parser core - when encountering text, process appropriately. */ -static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer) -{ - if ((input_buffer == NULL) || (input_buffer->content == NULL)) - { - return false; /* no input */ - } - - /* parse the different types of values */ - /* null */ - if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0)) - { - item->type = cJSON_NULL; - input_buffer->offset += 4; - return true; - } - /* false */ - if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0)) - { - item->type = cJSON_False; - input_buffer->offset += 5; - return true; - } - /* true */ - if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0)) - { - item->type = cJSON_True; - item->valueint = 1; - input_buffer->offset += 4; - return true; - } - /* string */ - if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '\"')) - { - return parse_string(item, input_buffer); - } - /* number */ - if (can_access_at_index(input_buffer, 0) && ((buffer_at_offset(input_buffer)[0] == '-') || ((buffer_at_offset(input_buffer)[0] >= '0') && (buffer_at_offset(input_buffer)[0] <= '9')))) - { - return parse_number(item, input_buffer); - } - /* array */ - if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '[')) - { - return parse_array(item, input_buffer); - } - /* object */ - if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '{')) - { - return parse_object(item, input_buffer); - } - - return false; -} - -/* Render a value to text. */ -static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer) -{ - unsigned char *output = NULL; - - if ((item == NULL) || (output_buffer == NULL)) - { - return false; - } - - switch ((item->type) & 0xFF) - { - case cJSON_NULL: - output = ensure(output_buffer, 5); - if (output == NULL) - { - return false; - } - strcpy((char*)output, "null"); - return true; - - case cJSON_False: - output = ensure(output_buffer, 6); - if (output == NULL) - { - return false; - } - strcpy((char*)output, "false"); - return true; - - case cJSON_True: - output = ensure(output_buffer, 5); - if (output == NULL) - { - return false; - } - strcpy((char*)output, "true"); - return true; - - case cJSON_Number: - return print_number(item, output_buffer); - - case cJSON_Raw: - { - size_t raw_length = 0; - if (item->valuestring == NULL) - { - return false; - } - - raw_length = strlen(item->valuestring) + sizeof(""); - output = ensure(output_buffer, raw_length); - if (output == NULL) - { - return false; - } - memcpy(output, item->valuestring, raw_length); - return true; - } - - case cJSON_String: - return print_string(item, output_buffer); - - case cJSON_Array: - return print_array(item, output_buffer); - - case cJSON_Object: - return print_object(item, output_buffer); - - default: - return false; - } -} - -/* Build an array from input text. */ -static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer) -{ - cJSON *head = NULL; /* head of the linked list */ - cJSON *current_item = NULL; - - if (input_buffer->depth >= CJSON_NESTING_LIMIT) - { - return false; /* to deeply nested */ - } - input_buffer->depth++; - - if (buffer_at_offset(input_buffer)[0] != '[') - { - /* not an array */ - goto fail; - } - - input_buffer->offset++; - buffer_skip_whitespace(input_buffer); - if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ']')) - { - /* empty array */ - goto success; - } - - /* check if we skipped to the end of the buffer */ - if (cannot_access_at_index(input_buffer, 0)) - { - input_buffer->offset--; - goto fail; - } - - /* step back to character in front of the first element */ - input_buffer->offset--; - /* loop through the comma separated array elements */ - do - { - /* allocate next item */ - cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); - if (new_item == NULL) - { - goto fail; /* allocation failure */ - } - - /* attach next item to list */ - if (head == NULL) - { - /* start the linked list */ - current_item = head = new_item; - } - else - { - /* add to the end and advance */ - current_item->next = new_item; - new_item->prev = current_item; - current_item = new_item; - } - - /* parse next value */ - input_buffer->offset++; - buffer_skip_whitespace(input_buffer); - if (!parse_value(current_item, input_buffer)) - { - goto fail; /* failed to parse value */ - } - buffer_skip_whitespace(input_buffer); - } - while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); - - if (cannot_access_at_index(input_buffer, 0) || buffer_at_offset(input_buffer)[0] != ']') - { - goto fail; /* expected end of array */ - } - -success: - input_buffer->depth--; - - if (head != NULL) { - head->prev = current_item; - } - - item->type = cJSON_Array; - item->child = head; - - input_buffer->offset++; - - return true; - -fail: - if (head != NULL) - { - cJSON_Delete(head); - } - - return false; -} - -/* Render an array to text */ -static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer) -{ - unsigned char *output_pointer = NULL; - size_t length = 0; - cJSON *current_element = item->child; - - if (output_buffer == NULL) - { - return false; - } - - /* Compose the output array. */ - /* opening square bracket */ - output_pointer = ensure(output_buffer, 1); - if (output_pointer == NULL) - { - return false; - } - - *output_pointer = '['; - output_buffer->offset++; - output_buffer->depth++; - - while (current_element != NULL) - { - if (!print_value(current_element, output_buffer)) - { - return false; - } - update_offset(output_buffer); - if (current_element->next) - { - length = (size_t) (output_buffer->format ? 2 : 1); - output_pointer = ensure(output_buffer, length + 1); - if (output_pointer == NULL) - { - return false; - } - *output_pointer++ = ','; - if(output_buffer->format) - { - *output_pointer++ = ' '; - } - *output_pointer = '\0'; - output_buffer->offset += length; - } - current_element = current_element->next; - } - - output_pointer = ensure(output_buffer, 2); - if (output_pointer == NULL) - { - return false; - } - *output_pointer++ = ']'; - *output_pointer = '\0'; - output_buffer->depth--; - - return true; -} - -/* Build an object from the text. */ -static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer) -{ - cJSON *head = NULL; /* linked list head */ - cJSON *current_item = NULL; - - if (input_buffer->depth >= CJSON_NESTING_LIMIT) - { - return false; /* to deeply nested */ - } - input_buffer->depth++; - - if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '{')) - { - goto fail; /* not an object */ - } - - input_buffer->offset++; - buffer_skip_whitespace(input_buffer); - if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '}')) - { - goto success; /* empty object */ - } - - /* check if we skipped to the end of the buffer */ - if (cannot_access_at_index(input_buffer, 0)) - { - input_buffer->offset--; - goto fail; - } - - /* step back to character in front of the first element */ - input_buffer->offset--; - /* loop through the comma separated array elements */ - do - { - /* allocate next item */ - cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); - if (new_item == NULL) - { - goto fail; /* allocation failure */ - } - - /* attach next item to list */ - if (head == NULL) - { - /* start the linked list */ - current_item = head = new_item; - } - else - { - /* add to the end and advance */ - current_item->next = new_item; - new_item->prev = current_item; - current_item = new_item; - } - - /* parse the name of the child */ - input_buffer->offset++; - buffer_skip_whitespace(input_buffer); - if (!parse_string(current_item, input_buffer)) - { - goto fail; /* failed to parse name */ - } - buffer_skip_whitespace(input_buffer); - - /* swap valuestring and string, because we parsed the name */ - current_item->string = current_item->valuestring; - current_item->valuestring = NULL; - - if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != ':')) - { - goto fail; /* invalid object */ - } - - /* parse the value */ - input_buffer->offset++; - buffer_skip_whitespace(input_buffer); - if (!parse_value(current_item, input_buffer)) - { - goto fail; /* failed to parse value */ - } - buffer_skip_whitespace(input_buffer); - } - while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); - - if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '}')) - { - goto fail; /* expected end of object */ - } - -success: - input_buffer->depth--; - - if (head != NULL) { - head->prev = current_item; - } - - item->type = cJSON_Object; - item->child = head; - - input_buffer->offset++; - return true; - -fail: - if (head != NULL) - { - cJSON_Delete(head); - } - - return false; -} - -/* Render an object to text. */ -static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer) -{ - unsigned char *output_pointer = NULL; - size_t length = 0; - cJSON *current_item = item->child; - - if (output_buffer == NULL) - { - return false; - } - - /* Compose the output: */ - length = (size_t) (output_buffer->format ? 2 : 1); /* fmt: {\n */ - output_pointer = ensure(output_buffer, length + 1); - if (output_pointer == NULL) - { - return false; - } - - *output_pointer++ = '{'; - output_buffer->depth++; - if (output_buffer->format) - { - *output_pointer++ = '\n'; - } - output_buffer->offset += length; - - while (current_item) - { - if (output_buffer->format) - { - size_t i; - output_pointer = ensure(output_buffer, output_buffer->depth); - if (output_pointer == NULL) - { - return false; - } - for (i = 0; i < output_buffer->depth; i++) - { - *output_pointer++ = '\t'; - } - output_buffer->offset += output_buffer->depth; - } - - /* print key */ - if (!print_string_ptr((unsigned char*)current_item->string, output_buffer)) - { - return false; - } - update_offset(output_buffer); - - length = (size_t) (output_buffer->format ? 2 : 1); - output_pointer = ensure(output_buffer, length); - if (output_pointer == NULL) - { - return false; - } - *output_pointer++ = ':'; - if (output_buffer->format) - { - *output_pointer++ = '\t'; - } - output_buffer->offset += length; - - /* print value */ - if (!print_value(current_item, output_buffer)) - { - return false; - } - update_offset(output_buffer); - - /* print comma if not last */ - length = ((size_t)(output_buffer->format ? 1 : 0) + (size_t)(current_item->next ? 1 : 0)); - output_pointer = ensure(output_buffer, length + 1); - if (output_pointer == NULL) - { - return false; - } - if (current_item->next) - { - *output_pointer++ = ','; - } - - if (output_buffer->format) - { - *output_pointer++ = '\n'; - } - *output_pointer = '\0'; - output_buffer->offset += length; - - current_item = current_item->next; - } - - output_pointer = ensure(output_buffer, output_buffer->format ? (output_buffer->depth + 1) : 2); - if (output_pointer == NULL) - { - return false; - } - if (output_buffer->format) - { - size_t i; - for (i = 0; i < (output_buffer->depth - 1); i++) - { - *output_pointer++ = '\t'; - } - } - *output_pointer++ = '}'; - *output_pointer = '\0'; - output_buffer->depth--; - - return true; -} - -/* Get Array size/item / object item. */ -CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array) -{ - cJSON *child = NULL; - size_t size = 0; - - if (array == NULL) - { - return 0; - } - - child = array->child; - - while(child != NULL) - { - size++; - child = child->next; - } - - /* FIXME: Can overflow here. Cannot be fixed without breaking the API */ - - return (int)size; -} - -static cJSON* get_array_item(const cJSON *array, size_t index) -{ - cJSON *current_child = NULL; - - if (array == NULL) - { - return NULL; - } - - current_child = array->child; - while ((current_child != NULL) && (index > 0)) - { - index--; - current_child = current_child->next; - } - - return current_child; -} - -CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index) -{ - if (index < 0) - { - return NULL; - } - - return get_array_item(array, (size_t)index); -} - -static cJSON *get_object_item(const cJSON * const object, const char * const name, const cJSON_bool case_sensitive) -{ - cJSON *current_element = NULL; - - if ((object == NULL) || (name == NULL)) - { - return NULL; - } - - current_element = object->child; - if (case_sensitive) - { - while ((current_element != NULL) && (current_element->string != NULL) && (strcmp(name, current_element->string) != 0)) - { - current_element = current_element->next; - } - } - else - { - while ((current_element != NULL) && (case_insensitive_strcmp((const unsigned char*)name, (const unsigned char*)(current_element->string)) != 0)) - { - current_element = current_element->next; - } - } - - if ((current_element == NULL) || (current_element->string == NULL)) { - return NULL; - } - - return current_element; -} - -CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string) -{ - return get_object_item(object, string, false); -} - -CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string) -{ - return get_object_item(object, string, true); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string) -{ - return cJSON_GetObjectItem(object, string) ? 1 : 0; -} - -/* Utility for array list handling. */ -static void suffix_object(cJSON *prev, cJSON *item) -{ - prev->next = item; - item->prev = prev; -} - -/* Utility for handling references. */ -static cJSON *create_reference(const cJSON *item, const internal_hooks * const hooks) -{ - cJSON *reference = NULL; - if (item == NULL) - { - return NULL; - } - - reference = cJSON_New_Item(hooks); - if (reference == NULL) - { - return NULL; - } - - memcpy(reference, item, sizeof(cJSON)); - reference->string = NULL; - reference->type |= cJSON_IsReference; - reference->next = reference->prev = NULL; - return reference; -} - -static cJSON_bool add_item_to_array(cJSON *array, cJSON *item) -{ - cJSON *child = NULL; - - if ((item == NULL) || (array == NULL) || (array == item)) - { - return false; - } - - child = array->child; - /* - * To find the last item in array quickly, we use prev in array - */ - if (child == NULL) - { - /* list is empty, start new one */ - array->child = item; - item->prev = item; - item->next = NULL; - } - else - { - /* append to the end */ - if (child->prev) - { - suffix_object(child->prev, item); - array->child->prev = item; - } - } - - return true; -} - -/* Add item to array/object. */ -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item) -{ - return add_item_to_array(array, item); -} - -#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) - #pragma GCC diagnostic push -#endif -#ifdef __GNUC__ -#pragma GCC diagnostic ignored "-Wcast-qual" -#endif -/* helper function to cast away const */ -static void* cast_away_const(const void* string) -{ - return (void*)string; -} -#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) - #pragma GCC diagnostic pop -#endif - - -static cJSON_bool add_item_to_object(cJSON * const object, const char * const string, cJSON * const item, const internal_hooks * const hooks, const cJSON_bool constant_key) -{ - char *new_key = NULL; - int new_type = cJSON_Invalid; - - if ((object == NULL) || (string == NULL) || (item == NULL) || (object == item)) - { - return false; - } - - if (constant_key) - { - new_key = (char*)cast_away_const(string); - new_type = item->type | cJSON_StringIsConst; - } - else - { - new_key = (char*)cJSON_strdup((const unsigned char*)string, hooks); - if (new_key == NULL) - { - return false; - } - - new_type = item->type & ~cJSON_StringIsConst; - } - - if (!(item->type & cJSON_StringIsConst) && (item->string != NULL)) - { - hooks->deallocate(item->string); - } - - item->string = new_key; - item->type = new_type; - - return add_item_to_array(object, item); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item) -{ - return add_item_to_object(object, string, item, &global_hooks, false); -} - -/* Add an item to an object with constant string as key */ -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item) -{ - return add_item_to_object(object, string, item, &global_hooks, true); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item) -{ - if (array == NULL) - { - return false; - } - - return add_item_to_array(array, create_reference(item, &global_hooks)); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item) -{ - if ((object == NULL) || (string == NULL)) - { - return false; - } - - return add_item_to_object(object, string, create_reference(item, &global_hooks), &global_hooks, false); -} - -CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name) -{ - cJSON *null = cJSON_CreateNull(); - if (add_item_to_object(object, name, null, &global_hooks, false)) - { - return null; - } - - cJSON_Delete(null); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name) -{ - cJSON *true_item = cJSON_CreateTrue(); - if (add_item_to_object(object, name, true_item, &global_hooks, false)) - { - return true_item; - } - - cJSON_Delete(true_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name) -{ - cJSON *false_item = cJSON_CreateFalse(); - if (add_item_to_object(object, name, false_item, &global_hooks, false)) - { - return false_item; - } - - cJSON_Delete(false_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean) -{ - cJSON *bool_item = cJSON_CreateBool(boolean); - if (add_item_to_object(object, name, bool_item, &global_hooks, false)) - { - return bool_item; - } - - cJSON_Delete(bool_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number) -{ - cJSON *number_item = cJSON_CreateNumber(number); - if (add_item_to_object(object, name, number_item, &global_hooks, false)) - { - return number_item; - } - - cJSON_Delete(number_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string) -{ - cJSON *string_item = cJSON_CreateString(string); - if (add_item_to_object(object, name, string_item, &global_hooks, false)) - { - return string_item; - } - - cJSON_Delete(string_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw) -{ - cJSON *raw_item = cJSON_CreateRaw(raw); - if (add_item_to_object(object, name, raw_item, &global_hooks, false)) - { - return raw_item; - } - - cJSON_Delete(raw_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name) -{ - cJSON *object_item = cJSON_CreateObject(); - if (add_item_to_object(object, name, object_item, &global_hooks, false)) - { - return object_item; - } - - cJSON_Delete(object_item); - return NULL; -} - -CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name) -{ - cJSON *array = cJSON_CreateArray(); - if (add_item_to_object(object, name, array, &global_hooks, false)) - { - return array; - } - - cJSON_Delete(array); - return NULL; -} - -CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item) -{ - if ((parent == NULL) || (item == NULL)) - { - return NULL; - } - - if (item != parent->child) - { - /* not the first element */ - item->prev->next = item->next; - } - if (item->next != NULL) - { - /* not the last element */ - item->next->prev = item->prev; - } - - if (item == parent->child) - { - /* first element */ - parent->child = item->next; - } - else if (item->next == NULL) - { - /* last element */ - parent->child->prev = item->prev; - } - - /* make sure the detached item doesn't point anywhere anymore */ - item->prev = NULL; - item->next = NULL; - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which) -{ - if (which < 0) - { - return NULL; - } - - return cJSON_DetachItemViaPointer(array, get_array_item(array, (size_t)which)); -} - -CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which) -{ - cJSON_Delete(cJSON_DetachItemFromArray(array, which)); -} - -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string) -{ - cJSON *to_detach = cJSON_GetObjectItem(object, string); - - return cJSON_DetachItemViaPointer(object, to_detach); -} - -CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string) -{ - cJSON *to_detach = cJSON_GetObjectItemCaseSensitive(object, string); - - return cJSON_DetachItemViaPointer(object, to_detach); -} - -CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string) -{ - cJSON_Delete(cJSON_DetachItemFromObject(object, string)); -} - -CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string) -{ - cJSON_Delete(cJSON_DetachItemFromObjectCaseSensitive(object, string)); -} - -/* Replace array/object items with new ones. */ -CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem) -{ - cJSON *after_inserted = NULL; - - if (which < 0) - { - return false; - } - - after_inserted = get_array_item(array, (size_t)which); - if (after_inserted == NULL) - { - return add_item_to_array(array, newitem); - } - - newitem->next = after_inserted; - newitem->prev = after_inserted->prev; - after_inserted->prev = newitem; - if (after_inserted == array->child) - { - array->child = newitem; - } - else - { - newitem->prev->next = newitem; - } - return true; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement) -{ - if ((parent == NULL) || (replacement == NULL) || (item == NULL)) - { - return false; - } - - if (replacement == item) - { - return true; - } - - replacement->next = item->next; - replacement->prev = item->prev; - - if (replacement->next != NULL) - { - replacement->next->prev = replacement; - } - if (parent->child == item) - { - if (parent->child->prev == parent->child) - { - replacement->prev = replacement; - } - parent->child = replacement; - } - else - { /* - * To find the last item in array quickly, we use prev in array. - * We can't modify the last item's next pointer where this item was the parent's child - */ - if (replacement->prev != NULL) - { - replacement->prev->next = replacement; - } - if (replacement->next == NULL) - { - parent->child->prev = replacement; - } - } - - item->next = NULL; - item->prev = NULL; - cJSON_Delete(item); - - return true; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem) -{ - if (which < 0) - { - return false; - } - - return cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem); -} - -static cJSON_bool replace_item_in_object(cJSON *object, const char *string, cJSON *replacement, cJSON_bool case_sensitive) -{ - if ((replacement == NULL) || (string == NULL)) - { - return false; - } - - /* replace the name in the replacement */ - if (!(replacement->type & cJSON_StringIsConst) && (replacement->string != NULL)) - { - cJSON_free(replacement->string); - } - replacement->string = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); - replacement->type &= ~cJSON_StringIsConst; - - return cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem) -{ - return replace_item_in_object(object, string, newitem, false); -} - -CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem) -{ - return replace_item_in_object(object, string, newitem, true); -} - -/* Create basic types: */ -CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_NULL; - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_True; - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_False; - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = boolean ? cJSON_True : cJSON_False; - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_Number; - item->valuedouble = num; - - /* use saturation in case of overflow */ - if (num >= INT_MAX) - { - item->valueint = INT_MAX; - } - else if (num <= (double)INT_MIN) - { - item->valueint = INT_MIN; - } - else - { - item->valueint = (int)num; - } - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_String; - item->valuestring = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); - if(!item->valuestring) - { - cJSON_Delete(item); - return NULL; - } - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if (item != NULL) - { - item->type = cJSON_String | cJSON_IsReference; - item->valuestring = (char*)cast_away_const(string); - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if (item != NULL) { - item->type = cJSON_Object | cJSON_IsReference; - item->child = (cJSON*)cast_away_const(child); - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child) { - cJSON *item = cJSON_New_Item(&global_hooks); - if (item != NULL) { - item->type = cJSON_Array | cJSON_IsReference; - item->child = (cJSON*)cast_away_const(child); - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type = cJSON_Raw; - item->valuestring = (char*)cJSON_strdup((const unsigned char*)raw, &global_hooks); - if(!item->valuestring) - { - cJSON_Delete(item); - return NULL; - } - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if(item) - { - item->type=cJSON_Array; - } - - return item; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void) -{ - cJSON *item = cJSON_New_Item(&global_hooks); - if (item) - { - item->type = cJSON_Object; - } - - return item; -} - -/* Create Arrays: */ -CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count) -{ - size_t i = 0; - cJSON *n = NULL; - cJSON *p = NULL; - cJSON *a = NULL; - - if ((count < 0) || (numbers == NULL)) - { - return NULL; - } - - a = cJSON_CreateArray(); - - for(i = 0; a && (i < (size_t)count); i++) - { - n = cJSON_CreateNumber(numbers[i]); - if (!n) - { - cJSON_Delete(a); - return NULL; - } - if(!i) - { - a->child = n; - } - else - { - suffix_object(p, n); - } - p = n; - } - - if (a && a->child) { - a->child->prev = n; - } - - return a; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count) -{ - size_t i = 0; - cJSON *n = NULL; - cJSON *p = NULL; - cJSON *a = NULL; - - if ((count < 0) || (numbers == NULL)) - { - return NULL; - } - - a = cJSON_CreateArray(); - - for(i = 0; a && (i < (size_t)count); i++) - { - n = cJSON_CreateNumber((double)numbers[i]); - if(!n) - { - cJSON_Delete(a); - return NULL; - } - if(!i) - { - a->child = n; - } - else - { - suffix_object(p, n); - } - p = n; - } - - if (a && a->child) { - a->child->prev = n; - } - - return a; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count) -{ - size_t i = 0; - cJSON *n = NULL; - cJSON *p = NULL; - cJSON *a = NULL; - - if ((count < 0) || (numbers == NULL)) - { - return NULL; - } - - a = cJSON_CreateArray(); - - for(i = 0; a && (i < (size_t)count); i++) - { - n = cJSON_CreateNumber(numbers[i]); - if(!n) - { - cJSON_Delete(a); - return NULL; - } - if(!i) - { - a->child = n; - } - else - { - suffix_object(p, n); - } - p = n; - } - - if (a && a->child) { - a->child->prev = n; - } - - return a; -} - -CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count) -{ - size_t i = 0; - cJSON *n = NULL; - cJSON *p = NULL; - cJSON *a = NULL; - - if ((count < 0) || (strings == NULL)) - { - return NULL; - } - - a = cJSON_CreateArray(); - - for (i = 0; a && (i < (size_t)count); i++) - { - n = cJSON_CreateString(strings[i]); - if(!n) - { - cJSON_Delete(a); - return NULL; - } - if(!i) - { - a->child = n; - } - else - { - suffix_object(p,n); - } - p = n; - } - - if (a && a->child) { - a->child->prev = n; - } - - return a; -} - -/* Duplication */ -CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse) -{ - cJSON *newitem = NULL; - cJSON *child = NULL; - cJSON *next = NULL; - cJSON *newchild = NULL; - - /* Bail on bad ptr */ - if (!item) - { - goto fail; - } - /* Create new item */ - newitem = cJSON_New_Item(&global_hooks); - if (!newitem) - { - goto fail; - } - /* Copy over all vars */ - newitem->type = item->type & (~cJSON_IsReference); - newitem->valueint = item->valueint; - newitem->valuedouble = item->valuedouble; - if (item->valuestring) - { - newitem->valuestring = (char*)cJSON_strdup((unsigned char*)item->valuestring, &global_hooks); - if (!newitem->valuestring) - { - goto fail; - } - } - if (item->string) - { - newitem->string = (item->type&cJSON_StringIsConst) ? item->string : (char*)cJSON_strdup((unsigned char*)item->string, &global_hooks); - if (!newitem->string) - { - goto fail; - } - } - /* If non-recursive, then we're done! */ - if (!recurse) - { - return newitem; - } - /* Walk the ->next chain for the child. */ - child = item->child; - while (child != NULL) - { - newchild = cJSON_Duplicate(child, true); /* Duplicate (with recurse) each item in the ->next chain */ - if (!newchild) - { - goto fail; - } - if (next != NULL) - { - /* If newitem->child already set, then crosswire ->prev and ->next and move on */ - next->next = newchild; - newchild->prev = next; - next = newchild; - } - else - { - /* Set newitem->child and move to it */ - newitem->child = newchild; - next = newchild; - } - child = child->next; - } - if (newitem && newitem->child) - { - newitem->child->prev = newchild; - } - - return newitem; - -fail: - if (newitem != NULL) - { - cJSON_Delete(newitem); - } - - return NULL; -} - -static void skip_oneline_comment(char **input) -{ - *input += static_strlen("//"); - - for (; (*input)[0] != '\0'; ++(*input)) - { - if ((*input)[0] == '\n') { - *input += static_strlen("\n"); - return; - } - } -} - -static void skip_multiline_comment(char **input) -{ - *input += static_strlen("/*"); - - for (; (*input)[0] != '\0'; ++(*input)) - { - if (((*input)[0] == '*') && ((*input)[1] == '/')) - { - *input += static_strlen("*/"); - return; - } - } -} - -static void minify_string(char **input, char **output) { - (*output)[0] = (*input)[0]; - *input += static_strlen("\""); - *output += static_strlen("\""); - - - for (; (*input)[0] != '\0'; (void)++(*input), ++(*output)) { - (*output)[0] = (*input)[0]; - - if ((*input)[0] == '\"') { - (*output)[0] = '\"'; - *input += static_strlen("\""); - *output += static_strlen("\""); - return; - } else if (((*input)[0] == '\\') && ((*input)[1] == '\"')) { - (*output)[1] = (*input)[1]; - *input += static_strlen("\""); - *output += static_strlen("\""); - } - } -} - -CJSON_PUBLIC(void) cJSON_Minify(char *json) -{ - char *into = json; - - if (json == NULL) - { - return; - } - - while (json[0] != '\0') - { - switch (json[0]) - { - case ' ': - case '\t': - case '\r': - case '\n': - json++; - break; - - case '/': - if (json[1] == '/') - { - skip_oneline_comment(&json); - } - else if (json[1] == '*') - { - skip_multiline_comment(&json); - } else { - json++; - } - break; - - case '\"': - minify_string(&json, (char**)&into); - break; - - default: - into[0] = json[0]; - json++; - into++; - } - } - - /* and null-terminate. */ - *into = '\0'; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_Invalid; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_False; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xff) == cJSON_True; -} - - -CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & (cJSON_True | cJSON_False)) != 0; -} -CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_NULL; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_Number; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_String; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_Array; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_Object; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item) -{ - if (item == NULL) - { - return false; - } - - return (item->type & 0xFF) == cJSON_Raw; -} - -CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive) -{ - if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF))) - { - return false; - } - - /* check if type is valid */ - switch (a->type & 0xFF) - { - case cJSON_False: - case cJSON_True: - case cJSON_NULL: - case cJSON_Number: - case cJSON_String: - case cJSON_Raw: - case cJSON_Array: - case cJSON_Object: - break; - - default: - return false; - } - - /* identical objects are equal */ - if (a == b) - { - return true; - } - - switch (a->type & 0xFF) - { - /* in these cases and equal type is enough */ - case cJSON_False: - case cJSON_True: - case cJSON_NULL: - return true; - - case cJSON_Number: - if (compare_double(a->valuedouble, b->valuedouble)) - { - return true; - } - return false; - - case cJSON_String: - case cJSON_Raw: - if ((a->valuestring == NULL) || (b->valuestring == NULL)) - { - return false; - } - if (strcmp(a->valuestring, b->valuestring) == 0) - { - return true; - } - - return false; - - case cJSON_Array: - { - cJSON *a_element = a->child; - cJSON *b_element = b->child; - - for (; (a_element != NULL) && (b_element != NULL);) - { - if (!cJSON_Compare(a_element, b_element, case_sensitive)) - { - return false; - } - - a_element = a_element->next; - b_element = b_element->next; - } - - /* one of the arrays is longer than the other */ - if (a_element != b_element) { - return false; - } - - return true; - } - - case cJSON_Object: - { - cJSON *a_element = NULL; - cJSON *b_element = NULL; - cJSON_ArrayForEach(a_element, a) - { - /* TODO This has O(n^2) runtime, which is horrible! */ - b_element = get_object_item(b, a_element->string, case_sensitive); - if (b_element == NULL) - { - return false; - } - - if (!cJSON_Compare(a_element, b_element, case_sensitive)) - { - return false; - } - } - - /* doing this twice, once on a and b to prevent true comparison if a subset of b - * TODO: Do this the proper way, this is just a fix for now */ - cJSON_ArrayForEach(b_element, b) - { - a_element = get_object_item(a, b_element->string, case_sensitive); - if (a_element == NULL) - { - return false; - } - - if (!cJSON_Compare(b_element, a_element, case_sensitive)) - { - return false; - } - } - - return true; - } - - default: - return false; - } -} - -CJSON_PUBLIC(void *) cJSON_malloc(size_t size) -{ - return global_hooks.allocate(size); -} - -CJSON_PUBLIC(void) cJSON_free(void *object) -{ - global_hooks.deallocate(object); -} +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + 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. +*/ + +/* cJSON */ +/* JSON parser in C. */ + +/* disable warnings about old C89 functions in MSVC */ +#if !defined(_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER) +#define _CRT_SECURE_NO_DEPRECATE +#endif + +#ifdef __GNUC__ +#pragma GCC visibility push(default) +#endif +#if defined(_MSC_VER) +#pragma warning (push) +/* disable warning about single line comments in system headers */ +#pragma warning (disable : 4001) +#endif + +#include +#include +#include +#include +#include +#include +#include + +#ifdef ENABLE_LOCALES +#include +#endif + +#if defined(_MSC_VER) +#pragma warning (pop) +#endif +#ifdef __GNUC__ +#pragma GCC visibility pop +#endif + +#include "cJSON.h" + +/* define our own boolean type */ +#ifdef true +#undef true +#endif +#define true ((cJSON_bool)1) + +#ifdef false +#undef false +#endif +#define false ((cJSON_bool)0) + +/* define isnan and isinf for ANSI C, if in C99 or above, isnan and isinf has been defined in math.h */ +#ifndef isinf +#define isinf(d) (isnan((d - d)) && !isnan(d)) +#endif +#ifndef isnan +#define isnan(d) (d != d) +#endif + +#ifndef NAN +#ifdef _WIN32 +#define NAN sqrt(-1.0) +#else +#define NAN 0.0/0.0 +#endif +#endif + +typedef struct { + const unsigned char *json; + size_t position; +} error; +static error global_error = { NULL, 0 }; + +CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void) +{ + return (const char*) (global_error.json + global_error.position); +} + +CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item) +{ + if (!cJSON_IsString(item)) + { + return NULL; + } + + return item->valuestring; +} + +CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item) +{ + if (!cJSON_IsNumber(item)) + { + return (double) NAN; + } + + return item->valuedouble; +} + +/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */ +#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 15) + #error cJSON.h and cJSON.c have different versions. Make sure that both have the same. +#endif + +CJSON_PUBLIC(const char*) cJSON_Version(void) +{ + static char version[15]; + sprintf(version, "%i.%i.%i", CJSON_VERSION_MAJOR, CJSON_VERSION_MINOR, CJSON_VERSION_PATCH); + + return version; +} + +/* Case insensitive string comparison, doesn't consider two NULL pointers equal though */ +static int case_insensitive_strcmp(const unsigned char *string1, const unsigned char *string2) +{ + if ((string1 == NULL) || (string2 == NULL)) + { + return 1; + } + + if (string1 == string2) + { + return 0; + } + + for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++) + { + if (*string1 == '\0') + { + return 0; + } + } + + return tolower(*string1) - tolower(*string2); +} + +typedef struct internal_hooks +{ + void *(CJSON_CDECL *allocate)(size_t size); + void (CJSON_CDECL *deallocate)(void *pointer); + void *(CJSON_CDECL *reallocate)(void *pointer, size_t size); +} internal_hooks; + +#if defined(_MSC_VER) +/* work around MSVC error C2322: '...' address of dllimport '...' is not static */ +static void * CJSON_CDECL internal_malloc(size_t size) +{ + return malloc(size); +} +static void CJSON_CDECL internal_free(void *pointer) +{ + free(pointer); +} +static void * CJSON_CDECL internal_realloc(void *pointer, size_t size) +{ + return realloc(pointer, size); +} +#else +#define internal_malloc malloc +#define internal_free free +#define internal_realloc realloc +#endif + +/* strlen of character literals resolved at compile time */ +#define static_strlen(string_literal) (sizeof(string_literal) - sizeof("")) + +static internal_hooks global_hooks = { internal_malloc, internal_free, internal_realloc }; + +static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks) +{ + size_t length = 0; + unsigned char *copy = NULL; + + if (string == NULL) + { + return NULL; + } + + length = strlen((const char*)string) + sizeof(""); + copy = (unsigned char*)hooks->allocate(length); + if (copy == NULL) + { + return NULL; + } + memcpy(copy, string, length); + + return copy; +} + +CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks) +{ + if (hooks == NULL) + { + /* Reset hooks */ + global_hooks.allocate = malloc; + global_hooks.deallocate = free; + global_hooks.reallocate = realloc; + return; + } + + global_hooks.allocate = malloc; + if (hooks->malloc_fn != NULL) + { + global_hooks.allocate = hooks->malloc_fn; + } + + global_hooks.deallocate = free; + if (hooks->free_fn != NULL) + { + global_hooks.deallocate = hooks->free_fn; + } + + /* use realloc only if both free and malloc are used */ + global_hooks.reallocate = NULL; + if ((global_hooks.allocate == malloc) && (global_hooks.deallocate == free)) + { + global_hooks.reallocate = realloc; + } +} + +/* Internal constructor. */ +static cJSON *cJSON_New_Item(const internal_hooks * const hooks) +{ + cJSON* node = (cJSON*)hooks->allocate(sizeof(cJSON)); + if (node) + { + memset(node, '\0', sizeof(cJSON)); + } + + return node; +} + +/* Delete a cJSON structure. */ +CJSON_PUBLIC(void) cJSON_Delete(cJSON *item) +{ + cJSON *next = NULL; + while (item != NULL) + { + next = item->next; + if (!(item->type & cJSON_IsReference) && (item->child != NULL)) + { + cJSON_Delete(item->child); + } + if (!(item->type & cJSON_IsReference) && (item->valuestring != NULL)) + { + global_hooks.deallocate(item->valuestring); + } + if (!(item->type & cJSON_StringIsConst) && (item->string != NULL)) + { + global_hooks.deallocate(item->string); + } + global_hooks.deallocate(item); + item = next; + } +} + +/* get the decimal point character of the current locale */ +static unsigned char get_decimal_point(void) +{ +#ifdef ENABLE_LOCALES + struct lconv *lconv = localeconv(); + return (unsigned char) lconv->decimal_point[0]; +#else + return '.'; +#endif +} + +typedef struct +{ + const unsigned char *content; + size_t length; + size_t offset; + size_t depth; /* How deeply nested (in arrays/objects) is the input at the current offset. */ + internal_hooks hooks; +} parse_buffer; + +/* check if the given size is left to read in a given parse buffer (starting with 1) */ +#define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length)) +/* check if the buffer can be accessed at the given index (starting with 0) */ +#define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length)) +#define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index)) +/* get a pointer to the buffer at the position */ +#define buffer_at_offset(buffer) ((buffer)->content + (buffer)->offset) + +/* Parse the input text to generate a number, and populate the result into item. */ +static cJSON_bool parse_number(cJSON * const item, parse_buffer * const input_buffer) +{ + double number = 0; + unsigned char *after_end = NULL; + unsigned char number_c_string[64]; + unsigned char decimal_point = get_decimal_point(); + size_t i = 0; + + if ((input_buffer == NULL) || (input_buffer->content == NULL)) + { + return false; + } + + /* copy the number into a temporary buffer and replace '.' with the decimal point + * of the current locale (for strtod) + * This also takes care of '\0' not necessarily being available for marking the end of the input */ + for (i = 0; (i < (sizeof(number_c_string) - 1)) && can_access_at_index(input_buffer, i); i++) + { + switch (buffer_at_offset(input_buffer)[i]) + { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '+': + case '-': + case 'e': + case 'E': + number_c_string[i] = buffer_at_offset(input_buffer)[i]; + break; + + case '.': + number_c_string[i] = decimal_point; + break; + + default: + goto loop_end; + } + } +loop_end: + number_c_string[i] = '\0'; + + number = strtod((const char*)number_c_string, (char**)&after_end); + if (number_c_string == after_end) + { + return false; /* parse_error */ + } + + item->valuedouble = number; + + /* use saturation in case of overflow */ + if (number >= INT_MAX) + { + item->valueint = INT_MAX; + } + else if (number <= (double)INT_MIN) + { + item->valueint = INT_MIN; + } + else + { + item->valueint = (int)number; + } + + item->type = cJSON_Number; + + input_buffer->offset += (size_t)(after_end - number_c_string); + return true; +} + +/* don't ask me, but the original cJSON_SetNumberValue returns an integer or double */ +CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number) +{ + if (number >= INT_MAX) + { + object->valueint = INT_MAX; + } + else if (number <= (double)INT_MIN) + { + object->valueint = INT_MIN; + } + else + { + object->valueint = (int)number; + } + + return object->valuedouble = number; +} + +CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring) +{ + char *copy = NULL; + /* if object's type is not cJSON_String or is cJSON_IsReference, it should not set valuestring */ + if (!(object->type & cJSON_String) || (object->type & cJSON_IsReference)) + { + return NULL; + } + if (strlen(valuestring) <= strlen(object->valuestring)) + { + strcpy(object->valuestring, valuestring); + return object->valuestring; + } + copy = (char*) cJSON_strdup((const unsigned char*)valuestring, &global_hooks); + if (copy == NULL) + { + return NULL; + } + if (object->valuestring != NULL) + { + cJSON_free(object->valuestring); + } + object->valuestring = copy; + + return copy; +} + +typedef struct +{ + unsigned char *buffer; + size_t length; + size_t offset; + size_t depth; /* current nesting depth (for formatted printing) */ + cJSON_bool noalloc; + cJSON_bool format; /* is this print a formatted print */ + internal_hooks hooks; +} printbuffer; + +/* realloc printbuffer if necessary to have at least "needed" bytes more */ +static unsigned char* ensure(printbuffer * const p, size_t needed) +{ + unsigned char *newbuffer = NULL; + size_t newsize = 0; + + if ((p == NULL) || (p->buffer == NULL)) + { + return NULL; + } + + if ((p->length > 0) && (p->offset >= p->length)) + { + /* make sure that offset is valid */ + return NULL; + } + + if (needed > INT_MAX) + { + /* sizes bigger than INT_MAX are currently not supported */ + return NULL; + } + + needed += p->offset + 1; + if (needed <= p->length) + { + return p->buffer + p->offset; + } + + if (p->noalloc) { + return NULL; + } + + /* calculate new buffer size */ + if (needed > (INT_MAX / 2)) + { + /* overflow of int, use INT_MAX if possible */ + if (needed <= INT_MAX) + { + newsize = INT_MAX; + } + else + { + return NULL; + } + } + else + { + newsize = needed * 2; + } + + if (p->hooks.reallocate != NULL) + { + /* reallocate with realloc if available */ + newbuffer = (unsigned char*)p->hooks.reallocate(p->buffer, newsize); + if (newbuffer == NULL) + { + p->hooks.deallocate(p->buffer); + p->length = 0; + p->buffer = NULL; + + return NULL; + } + } + else + { + /* otherwise reallocate manually */ + newbuffer = (unsigned char*)p->hooks.allocate(newsize); + if (!newbuffer) + { + p->hooks.deallocate(p->buffer); + p->length = 0; + p->buffer = NULL; + + return NULL; + } + + memcpy(newbuffer, p->buffer, p->offset + 1); + p->hooks.deallocate(p->buffer); + } + p->length = newsize; + p->buffer = newbuffer; + + return newbuffer + p->offset; +} + +/* calculate the new length of the string in a printbuffer and update the offset */ +static void update_offset(printbuffer * const buffer) +{ + const unsigned char *buffer_pointer = NULL; + if ((buffer == NULL) || (buffer->buffer == NULL)) + { + return; + } + buffer_pointer = buffer->buffer + buffer->offset; + + buffer->offset += strlen((const char*)buffer_pointer); +} + +/* securely comparison of floating-point variables */ +static cJSON_bool compare_double(double a, double b) +{ + double maxVal = fabs(a) > fabs(b) ? fabs(a) : fabs(b); + return (fabs(a - b) <= maxVal * DBL_EPSILON); +} + +/* Render the number nicely from the given item into a string. */ +static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + double d = item->valuedouble; + int length = 0; + size_t i = 0; + unsigned char number_buffer[26] = {0}; /* temporary buffer to print the number into */ + unsigned char decimal_point = get_decimal_point(); + double test = 0.0; + + if (output_buffer == NULL) + { + return false; + } + + /* This checks for NaN and Infinity */ + if (isnan(d) || isinf(d)) + { + length = sprintf((char*)number_buffer, "null"); + } + else + { + /* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */ + length = sprintf((char*)number_buffer, "%1.15g", d); + + /* Check whether the original double can be recovered */ + if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || !compare_double((double)test, d)) + { + /* If not, print with 17 decimal places of precision */ + length = sprintf((char*)number_buffer, "%1.17g", d); + } + } + + /* sprintf failed or buffer overrun occurred */ + if ((length < 0) || (length > (int)(sizeof(number_buffer) - 1))) + { + return false; + } + + /* reserve appropriate space in the output */ + output_pointer = ensure(output_buffer, (size_t)length + sizeof("")); + if (output_pointer == NULL) + { + return false; + } + + /* copy the printed number to the output and replace locale + * dependent decimal point with '.' */ + for (i = 0; i < ((size_t)length); i++) + { + if (number_buffer[i] == decimal_point) + { + output_pointer[i] = '.'; + continue; + } + + output_pointer[i] = number_buffer[i]; + } + output_pointer[i] = '\0'; + + output_buffer->offset += (size_t)length; + + return true; +} + +/* parse 4 digit hexadecimal number */ +static unsigned parse_hex4(const unsigned char * const input) +{ + unsigned int h = 0; + size_t i = 0; + + for (i = 0; i < 4; i++) + { + /* parse digit */ + if ((input[i] >= '0') && (input[i] <= '9')) + { + h += (unsigned int) input[i] - '0'; + } + else if ((input[i] >= 'A') && (input[i] <= 'F')) + { + h += (unsigned int) 10 + input[i] - 'A'; + } + else if ((input[i] >= 'a') && (input[i] <= 'f')) + { + h += (unsigned int) 10 + input[i] - 'a'; + } + else /* invalid */ + { + return 0; + } + + if (i < 3) + { + /* shift left to make place for the next nibble */ + h = h << 4; + } + } + + return h; +} + +/* converts a UTF-16 literal to UTF-8 + * A literal can be one or two sequences of the form \uXXXX */ +static unsigned char utf16_literal_to_utf8(const unsigned char * const input_pointer, const unsigned char * const input_end, unsigned char **output_pointer) +{ + long unsigned int codepoint = 0; + unsigned int first_code = 0; + const unsigned char *first_sequence = input_pointer; + unsigned char utf8_length = 0; + unsigned char utf8_position = 0; + unsigned char sequence_length = 0; + unsigned char first_byte_mark = 0; + + if ((input_end - first_sequence) < 6) + { + /* input ends unexpectedly */ + goto fail; + } + + /* get the first utf16 sequence */ + first_code = parse_hex4(first_sequence + 2); + + /* check that the code is valid */ + if (((first_code >= 0xDC00) && (first_code <= 0xDFFF))) + { + goto fail; + } + + /* UTF16 surrogate pair */ + if ((first_code >= 0xD800) && (first_code <= 0xDBFF)) + { + const unsigned char *second_sequence = first_sequence + 6; + unsigned int second_code = 0; + sequence_length = 12; /* \uXXXX\uXXXX */ + + if ((input_end - second_sequence) < 6) + { + /* input ends unexpectedly */ + goto fail; + } + + if ((second_sequence[0] != '\\') || (second_sequence[1] != 'u')) + { + /* missing second half of the surrogate pair */ + goto fail; + } + + /* get the second utf16 sequence */ + second_code = parse_hex4(second_sequence + 2); + /* check that the code is valid */ + if ((second_code < 0xDC00) || (second_code > 0xDFFF)) + { + /* invalid second half of the surrogate pair */ + goto fail; + } + + + /* calculate the unicode codepoint from the surrogate pair */ + codepoint = 0x10000 + (((first_code & 0x3FF) << 10) | (second_code & 0x3FF)); + } + else + { + sequence_length = 6; /* \uXXXX */ + codepoint = first_code; + } + + /* encode as UTF-8 + * takes at maximum 4 bytes to encode: + * 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ + if (codepoint < 0x80) + { + /* normal ascii, encoding 0xxxxxxx */ + utf8_length = 1; + } + else if (codepoint < 0x800) + { + /* two bytes, encoding 110xxxxx 10xxxxxx */ + utf8_length = 2; + first_byte_mark = 0xC0; /* 11000000 */ + } + else if (codepoint < 0x10000) + { + /* three bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx */ + utf8_length = 3; + first_byte_mark = 0xE0; /* 11100000 */ + } + else if (codepoint <= 0x10FFFF) + { + /* four bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx 10xxxxxx */ + utf8_length = 4; + first_byte_mark = 0xF0; /* 11110000 */ + } + else + { + /* invalid unicode codepoint */ + goto fail; + } + + /* encode as utf8 */ + for (utf8_position = (unsigned char)(utf8_length - 1); utf8_position > 0; utf8_position--) + { + /* 10xxxxxx */ + (*output_pointer)[utf8_position] = (unsigned char)((codepoint | 0x80) & 0xBF); + codepoint >>= 6; + } + /* encode first byte */ + if (utf8_length > 1) + { + (*output_pointer)[0] = (unsigned char)((codepoint | first_byte_mark) & 0xFF); + } + else + { + (*output_pointer)[0] = (unsigned char)(codepoint & 0x7F); + } + + *output_pointer += utf8_length; + + return sequence_length; + +fail: + return 0; +} + +/* Parse the input text into an unescaped cinput, and populate item. */ +static cJSON_bool parse_string(cJSON * const item, parse_buffer * const input_buffer) +{ + const unsigned char *input_pointer = buffer_at_offset(input_buffer) + 1; + const unsigned char *input_end = buffer_at_offset(input_buffer) + 1; + unsigned char *output_pointer = NULL; + unsigned char *output = NULL; + + /* not a string */ + if (buffer_at_offset(input_buffer)[0] != '\"') + { + goto fail; + } + + { + /* calculate approximate size of the output (overestimate) */ + size_t allocation_length = 0; + size_t skipped_bytes = 0; + while (((size_t)(input_end - input_buffer->content) < input_buffer->length) && (*input_end != '\"')) + { + /* is escape sequence */ + if (input_end[0] == '\\') + { + if ((size_t)(input_end + 1 - input_buffer->content) >= input_buffer->length) + { + /* prevent buffer overflow when last input character is a backslash */ + goto fail; + } + skipped_bytes++; + input_end++; + } + input_end++; + } + if (((size_t)(input_end - input_buffer->content) >= input_buffer->length) || (*input_end != '\"')) + { + goto fail; /* string ended unexpectedly */ + } + + /* This is at most how much we need for the output */ + allocation_length = (size_t) (input_end - buffer_at_offset(input_buffer)) - skipped_bytes; + output = (unsigned char*)input_buffer->hooks.allocate(allocation_length + sizeof("")); + if (output == NULL) + { + goto fail; /* allocation failure */ + } + } + + output_pointer = output; + /* loop through the string literal */ + while (input_pointer < input_end) + { + if (*input_pointer != '\\') + { + *output_pointer++ = *input_pointer++; + } + /* escape sequence */ + else + { + unsigned char sequence_length = 2; + if ((input_end - input_pointer) < 1) + { + goto fail; + } + + switch (input_pointer[1]) + { + case 'b': + *output_pointer++ = '\b'; + break; + case 'f': + *output_pointer++ = '\f'; + break; + case 'n': + *output_pointer++ = '\n'; + break; + case 'r': + *output_pointer++ = '\r'; + break; + case 't': + *output_pointer++ = '\t'; + break; + case '\"': + case '\\': + case '/': + *output_pointer++ = input_pointer[1]; + break; + + /* UTF-16 literal */ + case 'u': + sequence_length = utf16_literal_to_utf8(input_pointer, input_end, &output_pointer); + if (sequence_length == 0) + { + /* failed to convert UTF16-literal to UTF-8 */ + goto fail; + } + break; + + default: + goto fail; + } + input_pointer += sequence_length; + } + } + + /* zero terminate the output */ + *output_pointer = '\0'; + + item->type = cJSON_String; + item->valuestring = (char*)output; + + input_buffer->offset = (size_t) (input_end - input_buffer->content); + input_buffer->offset++; + + return true; + +fail: + if (output != NULL) + { + input_buffer->hooks.deallocate(output); + } + + if (input_pointer != NULL) + { + input_buffer->offset = (size_t)(input_pointer - input_buffer->content); + } + + return false; +} + +/* Render the cstring provided to an escaped version that can be printed. */ +static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffer * const output_buffer) +{ + const unsigned char *input_pointer = NULL; + unsigned char *output = NULL; + unsigned char *output_pointer = NULL; + size_t output_length = 0; + /* numbers of additional characters needed for escaping */ + size_t escape_characters = 0; + + if (output_buffer == NULL) + { + return false; + } + + /* empty string */ + if (input == NULL) + { + output = ensure(output_buffer, sizeof("\"\"")); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "\"\""); + + return true; + } + + /* set "flag" to 1 if something needs to be escaped */ + for (input_pointer = input; *input_pointer; input_pointer++) + { + switch (*input_pointer) + { + case '\"': + case '\\': + case '\b': + case '\f': + case '\n': + case '\r': + case '\t': + /* one character escape sequence */ + escape_characters++; + break; + default: + if (*input_pointer < 32) + { + /* UTF-16 escape sequence uXXXX */ + escape_characters += 5; + } + break; + } + } + output_length = (size_t)(input_pointer - input) + escape_characters; + + output = ensure(output_buffer, output_length + sizeof("\"\"")); + if (output == NULL) + { + return false; + } + + /* no characters have to be escaped */ + if (escape_characters == 0) + { + output[0] = '\"'; + memcpy(output + 1, input, output_length); + output[output_length + 1] = '\"'; + output[output_length + 2] = '\0'; + + return true; + } + + output[0] = '\"'; + output_pointer = output + 1; + /* copy the string */ + for (input_pointer = input; *input_pointer != '\0'; (void)input_pointer++, output_pointer++) + { + if ((*input_pointer > 31) && (*input_pointer != '\"') && (*input_pointer != '\\')) + { + /* normal character, copy */ + *output_pointer = *input_pointer; + } + else + { + /* character needs to be escaped */ + *output_pointer++ = '\\'; + switch (*input_pointer) + { + case '\\': + *output_pointer = '\\'; + break; + case '\"': + *output_pointer = '\"'; + break; + case '\b': + *output_pointer = 'b'; + break; + case '\f': + *output_pointer = 'f'; + break; + case '\n': + *output_pointer = 'n'; + break; + case '\r': + *output_pointer = 'r'; + break; + case '\t': + *output_pointer = 't'; + break; + default: + /* escape and print as unicode codepoint */ + sprintf((char*)output_pointer, "u%04x", *input_pointer); + output_pointer += 4; + break; + } + } + } + output[output_length + 1] = '\"'; + output[output_length + 2] = '\0'; + + return true; +} + +/* Invoke print_string_ptr (which is useful) on an item. */ +static cJSON_bool print_string(const cJSON * const item, printbuffer * const p) +{ + return print_string_ptr((unsigned char*)item->valuestring, p); +} + +/* Predeclare these prototypes. */ +static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer); +static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer); +static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer); + +/* Utility to jump whitespace and cr/lf */ +static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer) +{ + if ((buffer == NULL) || (buffer->content == NULL)) + { + return NULL; + } + + if (cannot_access_at_index(buffer, 0)) + { + return buffer; + } + + while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32)) + { + buffer->offset++; + } + + if (buffer->offset == buffer->length) + { + buffer->offset--; + } + + return buffer; +} + +/* skip the UTF-8 BOM (byte order mark) if it is at the beginning of a buffer */ +static parse_buffer *skip_utf8_bom(parse_buffer * const buffer) +{ + if ((buffer == NULL) || (buffer->content == NULL) || (buffer->offset != 0)) + { + return NULL; + } + + if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0)) + { + buffer->offset += 3; + } + + return buffer; +} + +CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated) +{ + size_t buffer_length; + + if (NULL == value) + { + return NULL; + } + + /* Adding null character size due to require_null_terminated. */ + buffer_length = strlen(value) + sizeof(""); + + return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated); +} + +/* Parse an object - create a new root, and populate. */ +CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated) +{ + parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } }; + cJSON *item = NULL; + + /* reset error position */ + global_error.json = NULL; + global_error.position = 0; + + if (value == NULL || 0 == buffer_length) + { + goto fail; + } + + buffer.content = (const unsigned char*)value; + buffer.length = buffer_length; + buffer.offset = 0; + buffer.hooks = global_hooks; + + item = cJSON_New_Item(&global_hooks); + if (item == NULL) /* memory fail */ + { + goto fail; + } + + if (!parse_value(item, buffer_skip_whitespace(skip_utf8_bom(&buffer)))) + { + /* parse failure. ep is set. */ + goto fail; + } + + /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */ + if (require_null_terminated) + { + buffer_skip_whitespace(&buffer); + if ((buffer.offset >= buffer.length) || buffer_at_offset(&buffer)[0] != '\0') + { + goto fail; + } + } + if (return_parse_end) + { + *return_parse_end = (const char*)buffer_at_offset(&buffer); + } + + return item; + +fail: + if (item != NULL) + { + cJSON_Delete(item); + } + + if (value != NULL) + { + error local_error; + local_error.json = (const unsigned char*)value; + local_error.position = 0; + + if (buffer.offset < buffer.length) + { + local_error.position = buffer.offset; + } + else if (buffer.length > 0) + { + local_error.position = buffer.length - 1; + } + + if (return_parse_end != NULL) + { + *return_parse_end = (const char*)local_error.json + local_error.position; + } + + global_error = local_error; + } + + return NULL; +} + +/* Default options for cJSON_Parse */ +CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value) +{ + return cJSON_ParseWithOpts(value, 0, 0); +} + +CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length) +{ + return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0); +} + +#define cjson_min(a, b) (((a) < (b)) ? (a) : (b)) + +static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks) +{ + static const size_t default_buffer_size = 256; + printbuffer buffer[1]; + unsigned char *printed = NULL; + + memset(buffer, 0, sizeof(buffer)); + + /* create buffer */ + buffer->buffer = (unsigned char*) hooks->allocate(default_buffer_size); + buffer->length = default_buffer_size; + buffer->format = format; + buffer->hooks = *hooks; + if (buffer->buffer == NULL) + { + goto fail; + } + + /* print the value */ + if (!print_value(item, buffer)) + { + goto fail; + } + update_offset(buffer); + + /* check if reallocate is available */ + if (hooks->reallocate != NULL) + { + printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->offset + 1); + if (printed == NULL) { + goto fail; + } + buffer->buffer = NULL; + } + else /* otherwise copy the JSON over to a new buffer */ + { + printed = (unsigned char*) hooks->allocate(buffer->offset + 1); + if (printed == NULL) + { + goto fail; + } + memcpy(printed, buffer->buffer, cjson_min(buffer->length, buffer->offset + 1)); + printed[buffer->offset] = '\0'; /* just to be sure */ + + /* free the buffer */ + hooks->deallocate(buffer->buffer); + } + + return printed; + +fail: + if (buffer->buffer != NULL) + { + hooks->deallocate(buffer->buffer); + } + + if (printed != NULL) + { + hooks->deallocate(printed); + } + + return NULL; +} + +/* Render a cJSON item/entity/structure to text. */ +CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item) +{ + return (char*)print(item, true, &global_hooks); +} + +CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item) +{ + return (char*)print(item, false, &global_hooks); +} + +CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt) +{ + printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; + + if (prebuffer < 0) + { + return NULL; + } + + p.buffer = (unsigned char*)global_hooks.allocate((size_t)prebuffer); + if (!p.buffer) + { + return NULL; + } + + p.length = (size_t)prebuffer; + p.offset = 0; + p.noalloc = false; + p.format = fmt; + p.hooks = global_hooks; + + if (!print_value(item, &p)) + { + global_hooks.deallocate(p.buffer); + return NULL; + } + + return (char*)p.buffer; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format) +{ + printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; + + if ((length < 0) || (buffer == NULL)) + { + return false; + } + + p.buffer = (unsigned char*)buffer; + p.length = (size_t)length; + p.offset = 0; + p.noalloc = true; + p.format = format; + p.hooks = global_hooks; + + return print_value(item, &p); +} + +/* Parser core - when encountering text, process appropriately. */ +static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer) +{ + if ((input_buffer == NULL) || (input_buffer->content == NULL)) + { + return false; /* no input */ + } + + /* parse the different types of values */ + /* null */ + if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0)) + { + item->type = cJSON_NULL; + input_buffer->offset += 4; + return true; + } + /* false */ + if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0)) + { + item->type = cJSON_False; + input_buffer->offset += 5; + return true; + } + /* true */ + if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0)) + { + item->type = cJSON_True; + item->valueint = 1; + input_buffer->offset += 4; + return true; + } + /* string */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '\"')) + { + return parse_string(item, input_buffer); + } + /* number */ + if (can_access_at_index(input_buffer, 0) && ((buffer_at_offset(input_buffer)[0] == '-') || ((buffer_at_offset(input_buffer)[0] >= '0') && (buffer_at_offset(input_buffer)[0] <= '9')))) + { + return parse_number(item, input_buffer); + } + /* array */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '[')) + { + return parse_array(item, input_buffer); + } + /* object */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '{')) + { + return parse_object(item, input_buffer); + } + + return false; +} + +/* Render a value to text. */ +static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output = NULL; + + if ((item == NULL) || (output_buffer == NULL)) + { + return false; + } + + switch ((item->type) & 0xFF) + { + case cJSON_NULL: + output = ensure(output_buffer, 5); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "null"); + return true; + + case cJSON_False: + output = ensure(output_buffer, 6); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "false"); + return true; + + case cJSON_True: + output = ensure(output_buffer, 5); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "true"); + return true; + + case cJSON_Number: + return print_number(item, output_buffer); + + case cJSON_Raw: + { + size_t raw_length = 0; + if (item->valuestring == NULL) + { + return false; + } + + raw_length = strlen(item->valuestring) + sizeof(""); + output = ensure(output_buffer, raw_length); + if (output == NULL) + { + return false; + } + memcpy(output, item->valuestring, raw_length); + return true; + } + + case cJSON_String: + return print_string(item, output_buffer); + + case cJSON_Array: + return print_array(item, output_buffer); + + case cJSON_Object: + return print_object(item, output_buffer); + + default: + return false; + } +} + +/* Build an array from input text. */ +static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer) +{ + cJSON *head = NULL; /* head of the linked list */ + cJSON *current_item = NULL; + + if (input_buffer->depth >= CJSON_NESTING_LIMIT) + { + return false; /* to deeply nested */ + } + input_buffer->depth++; + + if (buffer_at_offset(input_buffer)[0] != '[') + { + /* not an array */ + goto fail; + } + + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ']')) + { + /* empty array */ + goto success; + } + + /* check if we skipped to the end of the buffer */ + if (cannot_access_at_index(input_buffer, 0)) + { + input_buffer->offset--; + goto fail; + } + + /* step back to character in front of the first element */ + input_buffer->offset--; + /* loop through the comma separated array elements */ + do + { + /* allocate next item */ + cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); + if (new_item == NULL) + { + goto fail; /* allocation failure */ + } + + /* attach next item to list */ + if (head == NULL) + { + /* start the linked list */ + current_item = head = new_item; + } + else + { + /* add to the end and advance */ + current_item->next = new_item; + new_item->prev = current_item; + current_item = new_item; + } + + /* parse next value */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_value(current_item, input_buffer)) + { + goto fail; /* failed to parse value */ + } + buffer_skip_whitespace(input_buffer); + } + while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); + + if (cannot_access_at_index(input_buffer, 0) || buffer_at_offset(input_buffer)[0] != ']') + { + goto fail; /* expected end of array */ + } + +success: + input_buffer->depth--; + + if (head != NULL) { + head->prev = current_item; + } + + item->type = cJSON_Array; + item->child = head; + + input_buffer->offset++; + + return true; + +fail: + if (head != NULL) + { + cJSON_Delete(head); + } + + return false; +} + +/* Render an array to text */ +static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + size_t length = 0; + cJSON *current_element = item->child; + + if (output_buffer == NULL) + { + return false; + } + + /* Compose the output array. */ + /* opening square bracket */ + output_pointer = ensure(output_buffer, 1); + if (output_pointer == NULL) + { + return false; + } + + *output_pointer = '['; + output_buffer->offset++; + output_buffer->depth++; + + while (current_element != NULL) + { + if (!print_value(current_element, output_buffer)) + { + return false; + } + update_offset(output_buffer); + if (current_element->next) + { + length = (size_t) (output_buffer->format ? 2 : 1); + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ','; + if(output_buffer->format) + { + *output_pointer++ = ' '; + } + *output_pointer = '\0'; + output_buffer->offset += length; + } + current_element = current_element->next; + } + + output_pointer = ensure(output_buffer, 2); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ']'; + *output_pointer = '\0'; + output_buffer->depth--; + + return true; +} + +/* Build an object from the text. */ +static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer) +{ + cJSON *head = NULL; /* linked list head */ + cJSON *current_item = NULL; + + if (input_buffer->depth >= CJSON_NESTING_LIMIT) + { + return false; /* to deeply nested */ + } + input_buffer->depth++; + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '{')) + { + goto fail; /* not an object */ + } + + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '}')) + { + goto success; /* empty object */ + } + + /* check if we skipped to the end of the buffer */ + if (cannot_access_at_index(input_buffer, 0)) + { + input_buffer->offset--; + goto fail; + } + + /* step back to character in front of the first element */ + input_buffer->offset--; + /* loop through the comma separated array elements */ + do + { + /* allocate next item */ + cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); + if (new_item == NULL) + { + goto fail; /* allocation failure */ + } + + /* attach next item to list */ + if (head == NULL) + { + /* start the linked list */ + current_item = head = new_item; + } + else + { + /* add to the end and advance */ + current_item->next = new_item; + new_item->prev = current_item; + current_item = new_item; + } + + /* parse the name of the child */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_string(current_item, input_buffer)) + { + goto fail; /* failed to parse name */ + } + buffer_skip_whitespace(input_buffer); + + /* swap valuestring and string, because we parsed the name */ + current_item->string = current_item->valuestring; + current_item->valuestring = NULL; + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != ':')) + { + goto fail; /* invalid object */ + } + + /* parse the value */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_value(current_item, input_buffer)) + { + goto fail; /* failed to parse value */ + } + buffer_skip_whitespace(input_buffer); + } + while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '}')) + { + goto fail; /* expected end of object */ + } + +success: + input_buffer->depth--; + + if (head != NULL) { + head->prev = current_item; + } + + item->type = cJSON_Object; + item->child = head; + + input_buffer->offset++; + return true; + +fail: + if (head != NULL) + { + cJSON_Delete(head); + } + + return false; +} + +/* Render an object to text. */ +static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + size_t length = 0; + cJSON *current_item = item->child; + + if (output_buffer == NULL) + { + return false; + } + + /* Compose the output: */ + length = (size_t) (output_buffer->format ? 2 : 1); /* fmt: {\n */ + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + + *output_pointer++ = '{'; + output_buffer->depth++; + if (output_buffer->format) + { + *output_pointer++ = '\n'; + } + output_buffer->offset += length; + + while (current_item) + { + if (output_buffer->format) + { + size_t i; + output_pointer = ensure(output_buffer, output_buffer->depth); + if (output_pointer == NULL) + { + return false; + } + for (i = 0; i < output_buffer->depth; i++) + { + *output_pointer++ = '\t'; + } + output_buffer->offset += output_buffer->depth; + } + + /* print key */ + if (!print_string_ptr((unsigned char*)current_item->string, output_buffer)) + { + return false; + } + update_offset(output_buffer); + + length = (size_t) (output_buffer->format ? 2 : 1); + output_pointer = ensure(output_buffer, length); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ':'; + if (output_buffer->format) + { + *output_pointer++ = '\t'; + } + output_buffer->offset += length; + + /* print value */ + if (!print_value(current_item, output_buffer)) + { + return false; + } + update_offset(output_buffer); + + /* print comma if not last */ + length = ((size_t)(output_buffer->format ? 1 : 0) + (size_t)(current_item->next ? 1 : 0)); + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + if (current_item->next) + { + *output_pointer++ = ','; + } + + if (output_buffer->format) + { + *output_pointer++ = '\n'; + } + *output_pointer = '\0'; + output_buffer->offset += length; + + current_item = current_item->next; + } + + output_pointer = ensure(output_buffer, output_buffer->format ? (output_buffer->depth + 1) : 2); + if (output_pointer == NULL) + { + return false; + } + if (output_buffer->format) + { + size_t i; + for (i = 0; i < (output_buffer->depth - 1); i++) + { + *output_pointer++ = '\t'; + } + } + *output_pointer++ = '}'; + *output_pointer = '\0'; + output_buffer->depth--; + + return true; +} + +/* Get Array size/item / object item. */ +CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array) +{ + cJSON *child = NULL; + size_t size = 0; + + if (array == NULL) + { + return 0; + } + + child = array->child; + + while(child != NULL) + { + size++; + child = child->next; + } + + /* FIXME: Can overflow here. Cannot be fixed without breaking the API */ + + return (int)size; +} + +static cJSON* get_array_item(const cJSON *array, size_t index) +{ + cJSON *current_child = NULL; + + if (array == NULL) + { + return NULL; + } + + current_child = array->child; + while ((current_child != NULL) && (index > 0)) + { + index--; + current_child = current_child->next; + } + + return current_child; +} + +CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index) +{ + if (index < 0) + { + return NULL; + } + + return get_array_item(array, (size_t)index); +} + +static cJSON *get_object_item(const cJSON * const object, const char * const name, const cJSON_bool case_sensitive) +{ + cJSON *current_element = NULL; + + if ((object == NULL) || (name == NULL)) + { + return NULL; + } + + current_element = object->child; + if (case_sensitive) + { + while ((current_element != NULL) && (current_element->string != NULL) && (strcmp(name, current_element->string) != 0)) + { + current_element = current_element->next; + } + } + else + { + while ((current_element != NULL) && (case_insensitive_strcmp((const unsigned char*)name, (const unsigned char*)(current_element->string)) != 0)) + { + current_element = current_element->next; + } + } + + if ((current_element == NULL) || (current_element->string == NULL)) { + return NULL; + } + + return current_element; +} + +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string) +{ + return get_object_item(object, string, false); +} + +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string) +{ + return get_object_item(object, string, true); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string) +{ + return cJSON_GetObjectItem(object, string) ? 1 : 0; +} + +/* Utility for array list handling. */ +static void suffix_object(cJSON *prev, cJSON *item) +{ + prev->next = item; + item->prev = prev; +} + +/* Utility for handling references. */ +static cJSON *create_reference(const cJSON *item, const internal_hooks * const hooks) +{ + cJSON *reference = NULL; + if (item == NULL) + { + return NULL; + } + + reference = cJSON_New_Item(hooks); + if (reference == NULL) + { + return NULL; + } + + memcpy(reference, item, sizeof(cJSON)); + reference->string = NULL; + reference->type |= cJSON_IsReference; + reference->next = reference->prev = NULL; + return reference; +} + +static cJSON_bool add_item_to_array(cJSON *array, cJSON *item) +{ + cJSON *child = NULL; + + if ((item == NULL) || (array == NULL) || (array == item)) + { + return false; + } + + child = array->child; + /* + * To find the last item in array quickly, we use prev in array + */ + if (child == NULL) + { + /* list is empty, start new one */ + array->child = item; + item->prev = item; + item->next = NULL; + } + else + { + /* append to the end */ + if (child->prev) + { + suffix_object(child->prev, item); + array->child->prev = item; + } + } + + return true; +} + +/* Add item to array/object. */ +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item) +{ + return add_item_to_array(array, item); +} + +#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) + #pragma GCC diagnostic push +#endif +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif +/* helper function to cast away const */ +static void* cast_away_const(const void* string) +{ + return (void*)string; +} +#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) + #pragma GCC diagnostic pop +#endif + + +static cJSON_bool add_item_to_object(cJSON * const object, const char * const string, cJSON * const item, const internal_hooks * const hooks, const cJSON_bool constant_key) +{ + char *new_key = NULL; + int new_type = cJSON_Invalid; + + if ((object == NULL) || (string == NULL) || (item == NULL) || (object == item)) + { + return false; + } + + if (constant_key) + { + new_key = (char*)cast_away_const(string); + new_type = item->type | cJSON_StringIsConst; + } + else + { + new_key = (char*)cJSON_strdup((const unsigned char*)string, hooks); + if (new_key == NULL) + { + return false; + } + + new_type = item->type & ~cJSON_StringIsConst; + } + + if (!(item->type & cJSON_StringIsConst) && (item->string != NULL)) + { + hooks->deallocate(item->string); + } + + item->string = new_key; + item->type = new_type; + + return add_item_to_array(object, item); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item) +{ + return add_item_to_object(object, string, item, &global_hooks, false); +} + +/* Add an item to an object with constant string as key */ +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item) +{ + return add_item_to_object(object, string, item, &global_hooks, true); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item) +{ + if (array == NULL) + { + return false; + } + + return add_item_to_array(array, create_reference(item, &global_hooks)); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item) +{ + if ((object == NULL) || (string == NULL)) + { + return false; + } + + return add_item_to_object(object, string, create_reference(item, &global_hooks), &global_hooks, false); +} + +CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name) +{ + cJSON *null = cJSON_CreateNull(); + if (add_item_to_object(object, name, null, &global_hooks, false)) + { + return null; + } + + cJSON_Delete(null); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name) +{ + cJSON *true_item = cJSON_CreateTrue(); + if (add_item_to_object(object, name, true_item, &global_hooks, false)) + { + return true_item; + } + + cJSON_Delete(true_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name) +{ + cJSON *false_item = cJSON_CreateFalse(); + if (add_item_to_object(object, name, false_item, &global_hooks, false)) + { + return false_item; + } + + cJSON_Delete(false_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean) +{ + cJSON *bool_item = cJSON_CreateBool(boolean); + if (add_item_to_object(object, name, bool_item, &global_hooks, false)) + { + return bool_item; + } + + cJSON_Delete(bool_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number) +{ + cJSON *number_item = cJSON_CreateNumber(number); + if (add_item_to_object(object, name, number_item, &global_hooks, false)) + { + return number_item; + } + + cJSON_Delete(number_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string) +{ + cJSON *string_item = cJSON_CreateString(string); + if (add_item_to_object(object, name, string_item, &global_hooks, false)) + { + return string_item; + } + + cJSON_Delete(string_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw) +{ + cJSON *raw_item = cJSON_CreateRaw(raw); + if (add_item_to_object(object, name, raw_item, &global_hooks, false)) + { + return raw_item; + } + + cJSON_Delete(raw_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name) +{ + cJSON *object_item = cJSON_CreateObject(); + if (add_item_to_object(object, name, object_item, &global_hooks, false)) + { + return object_item; + } + + cJSON_Delete(object_item); + return NULL; +} + +CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name) +{ + cJSON *array = cJSON_CreateArray(); + if (add_item_to_object(object, name, array, &global_hooks, false)) + { + return array; + } + + cJSON_Delete(array); + return NULL; +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item) +{ + if ((parent == NULL) || (item == NULL)) + { + return NULL; + } + + if (item != parent->child) + { + /* not the first element */ + item->prev->next = item->next; + } + if (item->next != NULL) + { + /* not the last element */ + item->next->prev = item->prev; + } + + if (item == parent->child) + { + /* first element */ + parent->child = item->next; + } + else if (item->next == NULL) + { + /* last element */ + parent->child->prev = item->prev; + } + + /* make sure the detached item doesn't point anywhere anymore */ + item->prev = NULL; + item->next = NULL; + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which) +{ + if (which < 0) + { + return NULL; + } + + return cJSON_DetachItemViaPointer(array, get_array_item(array, (size_t)which)); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which) +{ + cJSON_Delete(cJSON_DetachItemFromArray(array, which)); +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string) +{ + cJSON *to_detach = cJSON_GetObjectItem(object, string); + + return cJSON_DetachItemViaPointer(object, to_detach); +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string) +{ + cJSON *to_detach = cJSON_GetObjectItemCaseSensitive(object, string); + + return cJSON_DetachItemViaPointer(object, to_detach); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string) +{ + cJSON_Delete(cJSON_DetachItemFromObject(object, string)); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string) +{ + cJSON_Delete(cJSON_DetachItemFromObjectCaseSensitive(object, string)); +} + +/* Replace array/object items with new ones. */ +CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem) +{ + cJSON *after_inserted = NULL; + + if (which < 0) + { + return false; + } + + after_inserted = get_array_item(array, (size_t)which); + if (after_inserted == NULL) + { + return add_item_to_array(array, newitem); + } + + newitem->next = after_inserted; + newitem->prev = after_inserted->prev; + after_inserted->prev = newitem; + if (after_inserted == array->child) + { + array->child = newitem; + } + else + { + newitem->prev->next = newitem; + } + return true; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement) +{ + if ((parent == NULL) || (replacement == NULL) || (item == NULL)) + { + return false; + } + + if (replacement == item) + { + return true; + } + + replacement->next = item->next; + replacement->prev = item->prev; + + if (replacement->next != NULL) + { + replacement->next->prev = replacement; + } + if (parent->child == item) + { + if (parent->child->prev == parent->child) + { + replacement->prev = replacement; + } + parent->child = replacement; + } + else + { /* + * To find the last item in array quickly, we use prev in array. + * We can't modify the last item's next pointer where this item was the parent's child + */ + if (replacement->prev != NULL) + { + replacement->prev->next = replacement; + } + if (replacement->next == NULL) + { + parent->child->prev = replacement; + } + } + + item->next = NULL; + item->prev = NULL; + cJSON_Delete(item); + + return true; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem) +{ + if (which < 0) + { + return false; + } + + return cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem); +} + +static cJSON_bool replace_item_in_object(cJSON *object, const char *string, cJSON *replacement, cJSON_bool case_sensitive) +{ + if ((replacement == NULL) || (string == NULL)) + { + return false; + } + + /* replace the name in the replacement */ + if (!(replacement->type & cJSON_StringIsConst) && (replacement->string != NULL)) + { + cJSON_free(replacement->string); + } + replacement->string = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); + replacement->type &= ~cJSON_StringIsConst; + + return cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem) +{ + return replace_item_in_object(object, string, newitem, false); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem) +{ + return replace_item_in_object(object, string, newitem, true); +} + +/* Create basic types: */ +CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_NULL; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_True; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_False; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = boolean ? cJSON_True : cJSON_False; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_Number; + item->valuedouble = num; + + /* use saturation in case of overflow */ + if (num >= INT_MAX) + { + item->valueint = INT_MAX; + } + else if (num <= (double)INT_MIN) + { + item->valueint = INT_MIN; + } + else + { + item->valueint = (int)num; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_String; + item->valuestring = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); + if(!item->valuestring) + { + cJSON_Delete(item); + return NULL; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if (item != NULL) + { + item->type = cJSON_String | cJSON_IsReference; + item->valuestring = (char*)cast_away_const(string); + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if (item != NULL) { + item->type = cJSON_Object | cJSON_IsReference; + item->child = (cJSON*)cast_away_const(child); + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child) { + cJSON *item = cJSON_New_Item(&global_hooks); + if (item != NULL) { + item->type = cJSON_Array | cJSON_IsReference; + item->child = (cJSON*)cast_away_const(child); + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_Raw; + item->valuestring = (char*)cJSON_strdup((const unsigned char*)raw, &global_hooks); + if(!item->valuestring) + { + cJSON_Delete(item); + return NULL; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type=cJSON_Array; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if (item) + { + item->type = cJSON_Object; + } + + return item; +} + +/* Create Arrays: */ +CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for(i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if (!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + if (a && a->child) { + a->child->prev = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for(i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber((double)numbers[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + if (a && a->child) { + a->child->prev = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for(i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + if (a && a->child) { + a->child->prev = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (strings == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for (i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateString(strings[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p,n); + } + p = n; + } + + if (a && a->child) { + a->child->prev = n; + } + + return a; +} + +/* Duplication */ +CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse) +{ + cJSON *newitem = NULL; + cJSON *child = NULL; + cJSON *next = NULL; + cJSON *newchild = NULL; + + /* Bail on bad ptr */ + if (!item) + { + goto fail; + } + /* Create new item */ + newitem = cJSON_New_Item(&global_hooks); + if (!newitem) + { + goto fail; + } + /* Copy over all vars */ + newitem->type = item->type & (~cJSON_IsReference); + newitem->valueint = item->valueint; + newitem->valuedouble = item->valuedouble; + if (item->valuestring) + { + newitem->valuestring = (char*)cJSON_strdup((unsigned char*)item->valuestring, &global_hooks); + if (!newitem->valuestring) + { + goto fail; + } + } + if (item->string) + { + newitem->string = (item->type&cJSON_StringIsConst) ? item->string : (char*)cJSON_strdup((unsigned char*)item->string, &global_hooks); + if (!newitem->string) + { + goto fail; + } + } + /* If non-recursive, then we're done! */ + if (!recurse) + { + return newitem; + } + /* Walk the ->next chain for the child. */ + child = item->child; + while (child != NULL) + { + newchild = cJSON_Duplicate(child, true); /* Duplicate (with recurse) each item in the ->next chain */ + if (!newchild) + { + goto fail; + } + if (next != NULL) + { + /* If newitem->child already set, then crosswire ->prev and ->next and move on */ + next->next = newchild; + newchild->prev = next; + next = newchild; + } + else + { + /* Set newitem->child and move to it */ + newitem->child = newchild; + next = newchild; + } + child = child->next; + } + if (newitem && newitem->child) + { + newitem->child->prev = newchild; + } + + return newitem; + +fail: + if (newitem != NULL) + { + cJSON_Delete(newitem); + } + + return NULL; +} + +static void skip_oneline_comment(char **input) +{ + *input += static_strlen("//"); + + for (; (*input)[0] != '\0'; ++(*input)) + { + if ((*input)[0] == '\n') { + *input += static_strlen("\n"); + return; + } + } +} + +static void skip_multiline_comment(char **input) +{ + *input += static_strlen("/*"); + + for (; (*input)[0] != '\0'; ++(*input)) + { + if (((*input)[0] == '*') && ((*input)[1] == '/')) + { + *input += static_strlen("*/"); + return; + } + } +} + +static void minify_string(char **input, char **output) { + (*output)[0] = (*input)[0]; + *input += static_strlen("\""); + *output += static_strlen("\""); + + + for (; (*input)[0] != '\0'; (void)++(*input), ++(*output)) { + (*output)[0] = (*input)[0]; + + if ((*input)[0] == '\"') { + (*output)[0] = '\"'; + *input += static_strlen("\""); + *output += static_strlen("\""); + return; + } else if (((*input)[0] == '\\') && ((*input)[1] == '\"')) { + (*output)[1] = (*input)[1]; + *input += static_strlen("\""); + *output += static_strlen("\""); + } + } +} + +CJSON_PUBLIC(void) cJSON_Minify(char *json) +{ + char *into = json; + + if (json == NULL) + { + return; + } + + while (json[0] != '\0') + { + switch (json[0]) + { + case ' ': + case '\t': + case '\r': + case '\n': + json++; + break; + + case '/': + if (json[1] == '/') + { + skip_oneline_comment(&json); + } + else if (json[1] == '*') + { + skip_multiline_comment(&json); + } else { + json++; + } + break; + + case '\"': + minify_string(&json, (char**)&into); + break; + + default: + into[0] = json[0]; + json++; + into++; + } + } + + /* and null-terminate. */ + *into = '\0'; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Invalid; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_False; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xff) == cJSON_True; +} + + +CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & (cJSON_True | cJSON_False)) != 0; +} +CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_NULL; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Number; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_String; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Array; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Object; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Raw; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive) +{ + if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF))) + { + return false; + } + + /* check if type is valid */ + switch (a->type & 0xFF) + { + case cJSON_False: + case cJSON_True: + case cJSON_NULL: + case cJSON_Number: + case cJSON_String: + case cJSON_Raw: + case cJSON_Array: + case cJSON_Object: + break; + + default: + return false; + } + + /* identical objects are equal */ + if (a == b) + { + return true; + } + + switch (a->type & 0xFF) + { + /* in these cases and equal type is enough */ + case cJSON_False: + case cJSON_True: + case cJSON_NULL: + return true; + + case cJSON_Number: + if (compare_double(a->valuedouble, b->valuedouble)) + { + return true; + } + return false; + + case cJSON_String: + case cJSON_Raw: + if ((a->valuestring == NULL) || (b->valuestring == NULL)) + { + return false; + } + if (strcmp(a->valuestring, b->valuestring) == 0) + { + return true; + } + + return false; + + case cJSON_Array: + { + cJSON *a_element = a->child; + cJSON *b_element = b->child; + + for (; (a_element != NULL) && (b_element != NULL);) + { + if (!cJSON_Compare(a_element, b_element, case_sensitive)) + { + return false; + } + + a_element = a_element->next; + b_element = b_element->next; + } + + /* one of the arrays is longer than the other */ + if (a_element != b_element) { + return false; + } + + return true; + } + + case cJSON_Object: + { + cJSON *a_element = NULL; + cJSON *b_element = NULL; + cJSON_ArrayForEach(a_element, a) + { + /* TODO This has O(n^2) runtime, which is horrible! */ + b_element = get_object_item(b, a_element->string, case_sensitive); + if (b_element == NULL) + { + return false; + } + + if (!cJSON_Compare(a_element, b_element, case_sensitive)) + { + return false; + } + } + + /* doing this twice, once on a and b to prevent true comparison if a subset of b + * TODO: Do this the proper way, this is just a fix for now */ + cJSON_ArrayForEach(b_element, b) + { + a_element = get_object_item(a, b_element->string, case_sensitive); + if (a_element == NULL) + { + return false; + } + + if (!cJSON_Compare(b_element, a_element, case_sensitive)) + { + return false; + } + } + + return true; + } + + default: + return false; + } +} + +CJSON_PUBLIC(void *) cJSON_malloc(size_t size) +{ + return global_hooks.allocate(size); +} + +CJSON_PUBLIC(void) cJSON_free(void *object) +{ + global_hooks.deallocate(object); +}