/*
- Copyright (c) 2009 Dave Gamble
-
+ 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
{
#endif
+/* project version */
+#define CJSON_VERSION_MAJOR 1
+#define CJSON_VERSION_MINOR 6
+#define CJSON_VERSION_PATCH 0
+
+#include <stddef.h>
+
/* cJSON Types: */
-#define cJSON_False 0
-#define cJSON_True 1
-#define cJSON_NULL 2
-#define cJSON_Number 3
-#define cJSON_String 4
-#define cJSON_Array 5
-#define cJSON_Object 6
-
+#define cJSON_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 {
- struct cJSON *next,*prev; /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
- struct cJSON *child; /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
+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;
- int type; /* The type of the item, as above. */
+ /* The type of the item, as above. */
+ int type;
- char *valuestring; /* The item's string, if type==cJSON_String */
- int valueint; /* The item's number, if type==cJSON_Number */
- double valuedouble; /* The item's number, if type==cJSON_Number */
+ /* The item's 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;
- char *string; /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
+ /* 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 {
+typedef struct cJSON_Hooks
+{
void *(*malloc_fn)(size_t sz);
void (*free_fn)(void *ptr);
} cJSON_Hooks;
+typedef int cJSON_bool;
+
+#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 2 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
+
+*/
+
+/* 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 __stdcall
+#elif defined(CJSON_EXPORT_SYMBOLS)
+#define CJSON_PUBLIC(type) __declspec(dllexport) type __stdcall
+#elif defined(CJSON_IMPORT_SYMBOLS)
+#define CJSON_PUBLIC(type) __declspec(dllimport) type __stdcall
+#endif
+#else /* !WIN32 */
+#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
+
+/* 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 */
-extern void cJSON_InitHooks(cJSON_Hooks* hooks);
+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);
+/* 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);
-/* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */
-extern cJSON *cJSON_Parse(const char *value);
-/* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
-extern char *cJSON_Print(cJSON *item);
-/* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */
-extern char *cJSON_PrintUnformatted(cJSON *item);
+/* 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 */
-extern char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt);
+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. */
-extern void cJSON_Delete(cJSON *c);
+CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
/* Returns the number of items in an array (or object). */
-extern int cJSON_GetArraySize(cJSON *array);
+CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
-extern cJSON *cJSON_GetArrayItem(cJSON *array,int item);
+CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index);
/* Get item "string" from object. Case insensitive. */
-extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string);
-
+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. */
-extern const char *cJSON_GetErrorPtr(void);
-
+CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
+
+/* 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. */
-extern cJSON *cJSON_CreateNull(void);
-extern cJSON *cJSON_CreateTrue(void);
-extern cJSON *cJSON_CreateFalse(void);
-extern cJSON *cJSON_CreateBool(int b);
-extern cJSON *cJSON_CreateNumber(double num);
-extern cJSON *cJSON_CreateDouble(double num,int i_num);
-extern cJSON *cJSON_CreateString(const char *string);
-extern cJSON *cJSON_CreateArray(void);
-extern cJSON *cJSON_CreateObject(void);
+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);
/* These utilities create an Array of count items. */
-extern cJSON *cJSON_CreateIntArray(const int *numbers,int count);
-extern cJSON *cJSON_CreateFloatArray(const float *numbers,int count);
-extern cJSON *cJSON_CreateDoubleArray(const double *numbers,int count);
-extern cJSON *cJSON_CreateStringArray(const char **strings,int count);
+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 **strings, int count);
/* Append item to the specified array/object. */
-extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
-extern void cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item);
-extern void cJSON_AddItemToObjectCS(cJSON *object,const char *string,cJSON *item); /* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object */
+CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(void) 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(void) 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. */
-extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
-extern void cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item);
+CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
/* Remove/Detatch items from Arrays/Objects. */
-extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which);
-extern void cJSON_DeleteItemFromArray(cJSON *array,int which);
-extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string);
-extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string);
-
+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. */
-extern void cJSON_InsertItemInArray(cJSON *array,int which,cJSON *newitem); /* Shifts pre-existing items to the right. */
-extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);
-extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
+CJSON_PUBLIC(void) 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(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
+CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
+CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
/* Duplicate a cJSON item */
-extern cJSON *cJSON_Duplicate(cJSON *item,int recurse);
+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);
-/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
-extern cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated);
-extern void cJSON_Minify(char *json);
+CJSON_PUBLIC(void) cJSON_Minify(char *json);
/* Macros for creating things quickly. */
-#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
-#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
-#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
-#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
-#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
-#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
+#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
+#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
+#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
+#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
+#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
+#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
+#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(s))
/* When assigning an integer value, it needs to be propagated to valuedouble too. */
-#define cJSON_SetIntValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
-#define cJSON_SetNumberValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
+#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))
+
+/* 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
}
/*
- Copyright (c) 2009 Dave Gamble
+ 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
/* 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 <string.h>
#include <stdio.h>
#include <math.h>
#include <float.h>
#include <limits.h>
#include <ctype.h>
+
+#ifdef ENABLE_LOCALES
+#include <locale.h>
+#endif
+
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+#ifdef __GNUC__
+#pragma GCC visibility pop
+#endif
+
#include "cJSON.h"
-static const char *ep;
+/* define our own boolean type */
+#define true ((cJSON_bool)1)
+#define false ((cJSON_bool)0)
+
+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);
+}
+
+/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
+#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 6) || (CJSON_VERSION_PATCH != 0)
+ #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;
+ }
+ }
-const char *cJSON_GetErrorPtr(void) {return ep;}
+ return tolower(*string1) - tolower(*string2);
+}
-static int cJSON_strcasecmp(const char *s1,const char *s2)
+typedef struct internal_hooks
+{
+ void *(*allocate)(size_t size);
+ void (*deallocate)(void *pointer);
+ void *(*reallocate)(void *pointer, size_t size);
+} internal_hooks;
+
+#if defined(_MSC_VER)
+/* work around MSVC error C2322: '...' address of dillimport '...' is not static */
+static void *internal_malloc(size_t size)
+{
+ return malloc(size);
+}
+static void internal_free(void *pointer)
+{
+ free(pointer);
+}
+static void *internal_realloc(void *pointer, size_t size)
{
- if (!s1) return (s1==s2)?0:1;if (!s2) return 1;
- for(; tolower(*(const unsigned char *)s1) == tolower(*(const unsigned char *)s2); ++s1, ++s2) if(*s1 == 0) return 0;
- return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
+ return realloc(pointer, size);
}
+#else
+#define internal_malloc malloc
+#define internal_free free
+#define internal_realloc realloc
+#endif
-static void *(*cJSON_malloc)(size_t sz) = malloc;
-static void (*cJSON_free)(void *ptr) = free;
+static internal_hooks global_hooks = { internal_malloc, internal_free, internal_realloc };
-static char* cJSON_strdup(const char* str)
+static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks)
{
- size_t len;
- char* copy;
+ 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);
- len = strlen(str) + 1;
- if (!(copy = (char*)cJSON_malloc(len))) return 0;
- memcpy(copy,str,len);
- return copy;
+ return copy;
}
-void cJSON_InitHooks(cJSON_Hooks* hooks)
+CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks)
{
- if (!hooks) { /* Reset hooks */
- cJSON_malloc = malloc;
- cJSON_free = free;
+ if (hooks == NULL)
+ {
+ /* Reset hooks */
+ global_hooks.allocate = malloc;
+ global_hooks.deallocate = free;
+ global_hooks.reallocate = realloc;
return;
}
- cJSON_malloc = (hooks->malloc_fn)?hooks->malloc_fn:malloc;
- cJSON_free = (hooks->free_fn)?hooks->free_fn:free;
+ 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(void)
+static cJSON *cJSON_New_Item(const internal_hooks * const hooks)
{
- cJSON* node = (cJSON*)cJSON_malloc(sizeof(cJSON));
- if (node) memset(node,0,sizeof(cJSON));
- return node;
+ cJSON* node = (cJSON*)hooks->allocate(sizeof(cJSON));
+ if (node)
+ {
+ memset(node, '\0', sizeof(cJSON));
+ }
+
+ return node;
}
/* Delete a cJSON structure. */
-void cJSON_Delete(cJSON *c)
+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)
{
- cJSON *next;
- while (c)
- {
- next=c->next;
- if (!(c->type&cJSON_IsReference) && c->child) cJSON_Delete(c->child);
- if (!(c->type&cJSON_IsReference) && c->valuestring) cJSON_free(c->valuestring);
- if (!(c->type&cJSON_StringIsConst) && c->string) cJSON_free(c->string);
- cJSON_free(c);
- c=next;
- }
+#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 const char *parse_number(cJSON *item,const char *num)
+static cJSON_bool parse_number(cJSON * const item, parse_buffer * const input_buffer)
{
- double n=0,sign=1,scale=0;int subscale=0,signsubscale=1;
+ 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 <= INT_MIN)
+ {
+ item->valueint = INT_MIN;
+ }
+ else
+ {
+ item->valueint = (int)number;
+ }
- if (*num=='-') sign=-1,num++; /* Has sign? */
- if (*num=='0') num++; /* is zero */
- if (*num>='1' && *num<='9') do n=(n*10.0)+(*num++ -'0'); while (*num>='0' && *num<='9'); /* Number? */
- if (*num=='.' && num[1]>='0' && num[1]<='9') {num++; do n=(n*10.0)+(*num++ -'0'),scale--; while (*num>='0' && *num<='9');} /* Fractional part? */
- if (*num=='e' || *num=='E') /* Exponent? */
- { num++;if (*num=='+') num++; else if (*num=='-') signsubscale=-1,num++; /* With sign? */
- while (*num>='0' && *num<='9') subscale=(subscale*10)+(*num++ - '0'); /* Number? */
- }
+ item->type = cJSON_Number;
- n=sign*n*pow(10.0,(scale+subscale*signsubscale)); /* number = +/- number.fraction * 10^+/- exponent */
-
- item->valuedouble=n;
- item->valueint=(int)n;
- item->type=cJSON_Number;
- return num;
+ input_buffer->offset += (size_t)(after_end - number_c_string);
+ return true;
}
-static int pow2gt (int x) { --x; x|=x>>1; x|=x>>2; x|=x>>4; x|=x>>8; x|=x>>16; return x+1; }
+/* 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 <= INT_MIN)
+ {
+ object->valueint = INT_MIN;
+ }
+ else
+ {
+ object->valueint = (int)number;
+ }
-typedef struct {char *buffer; int length; int offset; } printbuffer;
+ return object->valuedouble = number;
+}
-static char* ensure(printbuffer *p,int needed)
+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)
{
- char *newbuffer;int newsize;
- if (!p || !p->buffer) return 0;
- needed+=p->offset;
- if (needed<=p->length) return p->buffer+p->offset;
+ 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;
+ }
- newsize=pow2gt(needed);
- newbuffer=(char*)cJSON_malloc(newsize);
- if (!newbuffer) {cJSON_free(p->buffer);p->length=0,p->buffer=0;return 0;}
- if (newbuffer) memcpy(newbuffer,p->buffer,p->length);
- cJSON_free(p->buffer);
- p->length=newsize;
- p->buffer=newbuffer;
- return newbuffer+p->offset;
+ 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;
+ }
+ if (newbuffer)
+ {
+ memcpy(newbuffer, p->buffer, p->offset + 1);
+ }
+ p->hooks.deallocate(p->buffer);
+ }
+ p->length = newsize;
+ p->buffer = newbuffer;
+
+ return newbuffer + p->offset;
}
-static int update(printbuffer *p)
+/* calculate the new length of the string in a printbuffer and update the offset */
+static void update_offset(printbuffer * const buffer)
{
- char *str;
- if (!p || !p->buffer) return 0;
- str=p->buffer+p->offset;
- return p->offset+strlen(str);
+ 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);
}
/* Render the number nicely from the given item into a string. */
-static char *print_number(cJSON *item,printbuffer *p)
-{
- char *str=0;
- double d=item->valuedouble;
- if (d==0)
- {
- if (p) str=ensure(p,2);
- else str=(char*)cJSON_malloc(2); /* special case for 0. */
- if (str) strcpy(str,"0");
- }
- else if (fabs(((double)item->valueint)-d)<=DBL_EPSILON && d<=INT_MAX && d>=INT_MIN)
- {
- if (p) str=ensure(p,21);
- else str=(char*)cJSON_malloc(21); /* 2^64+1 can be represented in 21 chars. */
- if (str) sprintf(str,"%d",item->valueint);
- }
- else
- {
- if (p) str=ensure(p,64);
- else str=(char*)cJSON_malloc(64); /* This is a nice tradeoff. */
- if (str)
- {
- if (fabs(floor(d)-d)<=DBL_EPSILON && fabs(d)<1.0e60)sprintf(str,"%.0f",d);
- else if (fabs(d)<1.0e-6 || fabs(d)>1.0e9) sprintf(str,"%e",d);
- else sprintf(str,"%f",d);
- }
- }
- return str;
-}
-
-static unsigned parse_hex4(const char *str)
-{
- unsigned h=0;
- if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
- h=h<<4;str++;
- if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
- h=h<<4;str++;
- if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
- h=h<<4;str++;
- if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
- return h;
-}
-
-/* Parse the input text into an unescaped cstring, and populate item. */
-static const unsigned char firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
-static const char *parse_string(cJSON *item,const char *str)
-{
- const char *ptr=str+1;char *ptr2;char *out;int len=0;unsigned uc,uc2;
- if (*str!='\"') {ep=str;return 0;} /* not a string! */
-
- while (*ptr!='\"' && *ptr && ++len) if (*ptr++ == '\\') ptr++; /* Skip escaped quotes. */
-
- out=(char*)cJSON_malloc(len+1); /* This is how long we need for the string, roughly. */
- if (!out) return 0;
-
- ptr=str+1;ptr2=out;
- while (*ptr!='\"' && *ptr)
- {
- if (*ptr!='\\') *ptr2++=*ptr++;
- else
- {
- ptr++;
- switch (*ptr)
- {
- case 'b': *ptr2++='\b'; break;
- case 'f': *ptr2++='\f'; break;
- case 'n': *ptr2++='\n'; break;
- case 'r': *ptr2++='\r'; break;
- case 't': *ptr2++='\t'; break;
- case 'u': /* transcode utf16 to utf8. */
- uc=parse_hex4(ptr+1);ptr+=4; /* get the unicode char. */
-
- if ((uc>=0xDC00 && uc<=0xDFFF) || uc==0) break; /* check for invalid. */
-
- if (uc>=0xD800 && uc<=0xDBFF) /* UTF16 surrogate pairs. */
- {
- if (ptr[1]!='\\' || ptr[2]!='u') break; /* missing second-half of surrogate. */
- uc2=parse_hex4(ptr+3);ptr+=6;
- if (uc2<0xDC00 || uc2>0xDFFF) break; /* invalid second-half of surrogate. */
- uc=0x10000 + (((uc&0x3FF)<<10) | (uc2&0x3FF));
- }
-
- len=4;if (uc<0x80) len=1;else if (uc<0x800) len=2;else if (uc<0x10000) len=3; ptr2+=len;
-
- switch (len) {
- case 4: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
- case 3: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
- case 2: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
- case 1: *--ptr2 =(uc | firstByteMark[len]);
- }
- ptr2+=len;
- break;
- default: *ptr2++=*ptr; break;
- }
- ptr++;
- }
- }
- *ptr2=0;
- if (*ptr=='\"') ptr++;
- item->valuestring=out;
- item->type=cJSON_String;
- return ptr;
+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]; /* temporary buffer to print the number into */
+ unsigned char decimal_point = get_decimal_point();
+ double test;
+
+ if (output_buffer == NULL)
+ {
+ return false;
+ }
+
+ /* This checks for NaN and Infinity */
+ if ((d * 0) != 0)
+ {
+ 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) || ((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 occured */
+ 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);
+ 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 char *print_string_ptr(const char *str,printbuffer *p)
-{
- const char *ptr;char *ptr2,*out;int len=0,flag=0;unsigned char token;
-
- for (ptr=str;*ptr;ptr++) flag|=((*ptr>0 && *ptr<32)||(*ptr=='\"')||(*ptr=='\\'))?1:0;
- if (!flag)
- {
- len=ptr-str;
- if (p) out=ensure(p,len+3);
- else out=(char*)cJSON_malloc(len+3);
- if (!out) return 0;
- ptr2=out;*ptr2++='\"';
- strcpy(ptr2,str);
- ptr2[len]='\"';
- ptr2[len+1]=0;
- return out;
- }
-
- if (!str)
- {
- if (p) out=ensure(p,3);
- else out=(char*)cJSON_malloc(3);
- if (!out) return 0;
- strcpy(out,"\"\"");
- return out;
- }
- ptr=str;while ((token=*ptr) && ++len) {if (strchr("\"\\\b\f\n\r\t",token)) len++; else if (token<32) len+=5;ptr++;}
-
- if (p) out=ensure(p,len+3);
- else out=(char*)cJSON_malloc(len+3);
- if (!out) return 0;
-
- ptr2=out;ptr=str;
- *ptr2++='\"';
- while (*ptr)
- {
- if ((unsigned char)*ptr>31 && *ptr!='\"' && *ptr!='\\') *ptr2++=*ptr++;
- else
- {
- *ptr2++='\\';
- switch (token=*ptr++)
- {
- case '\\': *ptr2++='\\'; break;
- case '\"': *ptr2++='\"'; break;
- case '\b': *ptr2++='b'; break;
- case '\f': *ptr2++='f'; break;
- case '\n': *ptr2++='n'; break;
- case '\r': *ptr2++='r'; break;
- case '\t': *ptr2++='t'; break;
- default: sprintf(ptr2,"u%04x",token);ptr2+=5; break; /* escape and print */
- }
- }
- }
- *ptr2++='\"';*ptr2++=0;
- return out;
-}
-/* Invote print_string_ptr (which is useful) on an item. */
-static char *print_string(cJSON *item,printbuffer *p) {return print_string_ptr(item->valuestring,p);}
+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 const char *parse_value(cJSON *item,const char *value);
-static char *print_value(cJSON *item,int depth,int fmt,printbuffer *p);
-static const char *parse_array(cJSON *item,const char *value);
-static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p);
-static const char *parse_object(cJSON *item,const char *value);
-static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p);
+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 const char *skip(const char *in) {while (in && *in && (unsigned char)*in<=32) in++; return in;}
+static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
+{
+ if ((buffer == NULL) || (buffer->content == NULL))
+ {
+ return NULL;
+ }
-/* Parse an object - create a new root, and populate. */
-cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated)
+ 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)
{
- const char *end=0;
- cJSON *c=cJSON_New_Item();
- ep=0;
- if (!c) return 0; /* memory fail */
+ if ((buffer == NULL) || (buffer->content == NULL) || (buffer->offset != 0))
+ {
+ return NULL;
+ }
- end=parse_value(c,skip(value));
- if (!end) {cJSON_Delete(c);return 0;} /* parse failure. ep is set. */
+ if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0))
+ {
+ buffer->offset += 3;
+ }
- /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */
- if (require_null_terminated) {end=skip(end);if (*end) {cJSON_Delete(c);ep=end;return 0;}}
- if (return_parse_end) *return_parse_end=end;
- return c;
+ return buffer;
}
-/* Default options for cJSON_Parse */
-cJSON *cJSON_Parse(const char *value) {return cJSON_ParseWithOpts(value,0,0);}
-/* Render a cJSON item/entity/structure to text. */
-char *cJSON_Print(cJSON *item) {return print_value(item,0,1,0);}
-char *cJSON_PrintUnformatted(cJSON *item) {return print_value(item,0,0,0);}
+/* Parse an object - create a new root, and populate. */
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, 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)
+ {
+ goto fail;
+ }
+
+ buffer.content = (const unsigned char*)value;
+ buffer.length = strlen((const char*)value) + sizeof("");
+ buffer.offset = 0;
+ buffer.hooks = global_hooks;
+
+ item = cJSON_New_Item(&global_hooks);
+ if (item == NULL) /* memory fail */
+ {
+ goto fail;
+ }
-char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt)
+ 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)
{
- printbuffer p;
- p.buffer=(char*)cJSON_malloc(prebuffer);
- p.length=prebuffer;
- p.offset=0;
- return print_value(item,0,fmt,&p);
- return p.buffer;
+ return cJSON_ParseWithOpts(value, 0, 0);
}
+#define cjson_min(a, b) ((a < b) ? a : b)
-/* Parser core - when encountering text, process appropriately. */
-static const char *parse_value(cJSON *item,const char *value)
+static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks)
{
- if (!value) return 0; /* Fail on null. */
- if (!strncmp(value,"null",4)) { item->type=cJSON_NULL; return value+4; }
- if (!strncmp(value,"false",5)) { item->type=cJSON_False; return value+5; }
- if (!strncmp(value,"true",4)) { item->type=cJSON_True; item->valueint=1; return value+4; }
- if (*value=='\"') { return parse_string(item,value); }
- if (*value=='-' || (*value>='0' && *value<='9')) { return parse_number(item,value); }
- if (*value=='[') { return parse_array(item,value); }
- if (*value=='{') { return parse_object(item,value); }
+ printbuffer buffer[1];
+ unsigned char *printed = NULL;
+
+ memset(buffer, 0, sizeof(buffer));
+
+ /* create buffer */
+ buffer->buffer = (unsigned char*) hooks->allocate(256);
+ 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->length);
+ buffer->buffer = NULL;
+ if (printed == NULL) {
+ goto fail;
+ }
+ }
+ 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);
+ }
- ep=value;return 0; /* failure. */
+ return NULL;
}
-/* Render a value to text. */
-static char *print_value(cJSON *item,int depth,int fmt,printbuffer *p)
-{
- char *out=0;
- if (!item) return 0;
- if (p)
- {
- switch ((item->type)&255)
- {
- case cJSON_NULL: {out=ensure(p,5); if (out) strcpy(out,"null"); break;}
- case cJSON_False: {out=ensure(p,6); if (out) strcpy(out,"false"); break;}
- case cJSON_True: {out=ensure(p,5); if (out) strcpy(out,"true"); break;}
- case cJSON_Number: out=print_number(item,p);break;
- case cJSON_String: out=print_string(item,p);break;
- case cJSON_Array: out=print_array(item,depth,fmt,p);break;
- case cJSON_Object: out=print_object(item,depth,fmt,p);break;
- }
- }
- else
- {
- switch ((item->type)&255)
- {
- case cJSON_NULL: out=cJSON_strdup("null"); break;
- case cJSON_False: out=cJSON_strdup("false");break;
- case cJSON_True: out=cJSON_strdup("true"); break;
- case cJSON_Number: out=print_number(item,0);break;
- case cJSON_String: out=print_string(item,0);break;
- case cJSON_Array: out=print_array(item,depth,fmt,0);break;
- case cJSON_Object: out=print_object(item,depth,fmt,0);break;
- }
- }
- return out;
+/* Render a cJSON item/entity/structure to text. */
+CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item)
+{
+ return (char*)print(item, true, &global_hooks);
}
-/* Build an array from input text. */
-static const char *parse_array(cJSON *item,const char *value)
+CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item)
{
- cJSON *child;
- if (*value!='[') {ep=value;return 0;} /* not an array! */
+ 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;
+ }
- item->type=cJSON_Array;
- value=skip(value+1);
- if (*value==']') return value+1; /* empty array. */
+ p.buffer = (unsigned char*)global_hooks.allocate((size_t)prebuffer);
+ if (!p.buffer)
+ {
+ return NULL;
+ }
- item->child=child=cJSON_New_Item();
- if (!item->child) return 0; /* memory fail */
- value=skip(parse_value(child,skip(value))); /* skip any spacing, get the value. */
- if (!value) return 0;
+ p.length = (size_t)prebuffer;
+ p.offset = 0;
+ p.noalloc = false;
+ p.format = fmt;
+ p.hooks = global_hooks;
- while (*value==',')
- {
- cJSON *new_item;
- if (!(new_item=cJSON_New_Item())) return 0; /* memory fail */
- child->next=new_item;new_item->prev=child;child=new_item;
- value=skip(parse_value(child,skip(value+1)));
- if (!value) return 0; /* memory fail */
- }
+ if (!print_value(item, &p))
+ {
+ global_hooks.deallocate(p.buffer);
+ return NULL;
+ }
- if (*value==']') return value+1; /* end of array */
- ep=value;return 0; /* malformed. */
+ return (char*)p.buffer;
}
-/* Render an array to text */
-static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p)
-{
- char **entries;
- char *out=0,*ptr,*ret;int len=5;
- cJSON *child=item->child;
- int numentries=0,i=0,fail=0;
- size_t tmplen=0;
-
- /* How many entries in the array? */
- while (child) numentries++,child=child->next;
- /* Explicitly handle numentries==0 */
- if (!numentries)
- {
- if (p) out=ensure(p,3);
- else out=(char*)cJSON_malloc(3);
- if (out) strcpy(out,"[]");
- return out;
- }
-
- if (p)
- {
- /* Compose the output array. */
- i=p->offset;
- ptr=ensure(p,1);if (!ptr) return 0; *ptr='['; p->offset++;
- child=item->child;
- while (child && !fail)
- {
- print_value(child,depth+1,fmt,p);
- p->offset=update(p);
- if (child->next) {len=fmt?2:1;ptr=ensure(p,len+1);if (!ptr) return 0;*ptr++=',';if(fmt)*ptr++=' ';*ptr=0;p->offset+=len;}
- child=child->next;
- }
- ptr=ensure(p,2);if (!ptr) return 0; *ptr++=']';*ptr=0;
- out=(p->buffer)+i;
- }
- else
- {
- /* Allocate an array to hold the values for each */
- entries=(char**)cJSON_malloc(numentries*sizeof(char*));
- if (!entries) return 0;
- memset(entries,0,numentries*sizeof(char*));
- /* Retrieve all the results: */
- child=item->child;
- while (child && !fail)
- {
- ret=print_value(child,depth+1,fmt,0);
- entries[i++]=ret;
- if (ret) len+=strlen(ret)+2+(fmt?1:0); else fail=1;
- child=child->next;
- }
-
- /* If we didn't fail, try to malloc the output string */
- if (!fail) out=(char*)cJSON_malloc(len);
- /* If that fails, we fail. */
- if (!out) fail=1;
-
- /* Handle failure. */
- if (fail)
- {
- for (i=0;i<numentries;i++) if (entries[i]) cJSON_free(entries[i]);
- cJSON_free(entries);
- return 0;
- }
-
- /* Compose the output array. */
- *out='[';
- ptr=out+1;*ptr=0;
- for (i=0;i<numentries;i++)
- {
- tmplen=strlen(entries[i]);memcpy(ptr,entries[i],tmplen);ptr+=tmplen;
- if (i!=numentries-1) {*ptr++=',';if(fmt)*ptr++=' ';*ptr=0;}
- cJSON_free(entries[i]);
- }
- cJSON_free(entries);
- *ptr++=']';*ptr++=0;
- }
- return out;
+CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const cJSON_bool fmt)
+{
+ printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
+
+ if ((len < 0) || (buf == NULL))
+ {
+ return false;
+ }
+
+ p.buffer = (unsigned char*)buf;
+ p.length = (size_t)len;
+ p.offset = 0;
+ p.noalloc = true;
+ p.format = fmt;
+ p.hooks = global_hooks;
+
+ return print_value(item, &p);
}
-/* Build an object from the text. */
-static const char *parse_object(cJSON *item,const char *value)
-{
- cJSON *child;
- if (*value!='{') {ep=value;return 0;} /* not an object! */
-
- item->type=cJSON_Object;
- value=skip(value+1);
- if (*value=='}') return value+1; /* empty array. */
-
- item->child=child=cJSON_New_Item();
- if (!item->child) return 0;
- value=skip(parse_string(child,skip(value)));
- if (!value) return 0;
- child->string=child->valuestring;child->valuestring=0;
- if (*value!=':') {ep=value;return 0;} /* fail! */
- value=skip(parse_value(child,skip(value+1))); /* skip any spacing, get the value. */
- if (!value) return 0;
-
- while (*value==',')
- {
- cJSON *new_item;
- if (!(new_item=cJSON_New_Item())) return 0; /* memory fail */
- child->next=new_item;new_item->prev=child;child=new_item;
- value=skip(parse_string(child,skip(value+1)));
- if (!value) return 0;
- child->string=child->valuestring;child->valuestring=0;
- if (*value!=':') {ep=value;return 0;} /* fail! */
- value=skip(parse_value(child,skip(value+1))); /* skip any spacing, get the value. */
- if (!value) return 0;
- }
-
- if (*value=='}') return value+1; /* end of array */
- ep=value;return 0; /* malformed. */
+/* 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 an object to text. */
-static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p)
-{
- char **entries=0,**names=0;
- char *out=0,*ptr,*ret,*str;int len=7,i=0,j;
- cJSON *child=item->child;
- int numentries=0,fail=0;
- size_t tmplen=0;
- /* Count the number of entries. */
- while (child) numentries++,child=child->next;
- /* Explicitly handle empty object case */
- if (!numentries)
- {
- if (p) out=ensure(p,fmt?depth+4:3);
- else out=(char*)cJSON_malloc(fmt?depth+4:3);
- if (!out) return 0;
- ptr=out;*ptr++='{';
- if (fmt) {*ptr++='\n';for (i=0;i<depth-1;i++) *ptr++='\t';}
- *ptr++='}';*ptr++=0;
- return out;
- }
- if (p)
- {
- /* Compose the output: */
- i=p->offset;
- len=fmt?2:1; ptr=ensure(p,len+1); if (!ptr) return 0;
- *ptr++='{'; if (fmt) *ptr++='\n'; *ptr=0; p->offset+=len;
- child=item->child;depth++;
- while (child)
- {
- if (fmt)
- {
- ptr=ensure(p,depth); if (!ptr) return 0;
- for (j=0;j<depth;j++) *ptr++='\t';
- p->offset+=depth;
- }
- print_string_ptr(child->string,p);
- p->offset=update(p);
-
- len=fmt?2:1;
- ptr=ensure(p,len); if (!ptr) return 0;
- *ptr++=':';if (fmt) *ptr++='\t';
- p->offset+=len;
-
- print_value(child,depth,fmt,p);
- p->offset=update(p);
-
- len=(fmt?1:0)+(child->next?1:0);
- ptr=ensure(p,len+1); if (!ptr) return 0;
- if (child->next) *ptr++=',';
- if (fmt) *ptr++='\n';*ptr=0;
- p->offset+=len;
- child=child->next;
- }
- ptr=ensure(p,fmt?(depth+1):2); if (!ptr) return 0;
- if (fmt) for (i=0;i<depth-1;i++) *ptr++='\t';
- *ptr++='}';*ptr=0;
- out=(p->buffer)+i;
- }
- else
- {
- /* Allocate space for the names and the objects */
- entries=(char**)cJSON_malloc(numentries*sizeof(char*));
- if (!entries) return 0;
- names=(char**)cJSON_malloc(numentries*sizeof(char*));
- if (!names) {cJSON_free(entries);return 0;}
- memset(entries,0,sizeof(char*)*numentries);
- memset(names,0,sizeof(char*)*numentries);
-
- /* Collect all the results into our arrays: */
- child=item->child;depth++;if (fmt) len+=depth;
- while (child)
- {
- names[i]=str=print_string_ptr(child->string,0);
- entries[i++]=ret=print_value(child,depth,fmt,0);
- if (str && ret) len+=strlen(ret)+strlen(str)+2+(fmt?2+depth:0); else fail=1;
- child=child->next;
- }
-
- /* Try to allocate the output string */
- if (!fail) out=(char*)cJSON_malloc(len);
- if (!out) fail=1;
-
- /* Handle failure */
- if (fail)
- {
- for (i=0;i<numentries;i++) {if (names[i]) cJSON_free(names[i]);if (entries[i]) cJSON_free(entries[i]);}
- cJSON_free(names);cJSON_free(entries);
- return 0;
- }
-
- /* Compose the output: */
- *out='{';ptr=out+1;if (fmt)*ptr++='\n';*ptr=0;
- for (i=0;i<numentries;i++)
- {
- if (fmt) for (j=0;j<depth;j++) *ptr++='\t';
- tmplen=strlen(names[i]);memcpy(ptr,names[i],tmplen);ptr+=tmplen;
- *ptr++=':';if (fmt) *ptr++='\t';
- strcpy(ptr,entries[i]);ptr+=strlen(entries[i]);
- if (i!=numentries-1) *ptr++=',';
- if (fmt) *ptr++='\n';*ptr=0;
- cJSON_free(names[i]);cJSON_free(entries[i]);
- }
-
- cJSON_free(names);cJSON_free(entries);
- if (fmt) for (i=0;i<depth-1;i++) *ptr++='\t';
- *ptr++='}';*ptr++=0;
- }
- return out;
+/* 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)
+ {
+ if (!output_buffer->noalloc)
+ {
+ output_buffer->hooks.deallocate(output_buffer->buffer);
+ }
+ 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;
+ }
}
-/* Get Array size/item / object item. */
-int cJSON_GetArraySize(cJSON *array) {cJSON *c=array->child;int i=0;while(c)i++,c=c->next;return i;}
-cJSON *cJSON_GetArrayItem(cJSON *array,int item) {cJSON *c=array->child; while (c && item>0) item--,c=c->next; return c;}
-cJSON *cJSON_GetObjectItem(cJSON *object,const char *string) {cJSON *c=object->child; while (c && cJSON_strcasecmp(c->string,string)) c=c->next; return c;}
+/* 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;
-/* 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(cJSON *item) {cJSON *ref=cJSON_New_Item();if (!ref) return 0;memcpy(ref,item,sizeof(cJSON));ref->string=0;ref->type|=cJSON_IsReference;ref->next=ref->prev=0;return ref;}
+ if (input_buffer->depth >= CJSON_NESTING_LIMIT)
+ {
+ return false; /* to deeply nested */
+ }
+ input_buffer->depth++;
-/* Add item to array/object. */
-void cJSON_AddItemToArray(cJSON *array, cJSON *item) {cJSON *c=array->child;if (!item) return; if (!c) {array->child=item;} else {while (c && c->next) c=c->next; suffix_object(c,item);}}
-void cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item) {if (!item) return; if (item->string) cJSON_free(item->string);item->string=cJSON_strdup(string);cJSON_AddItemToArray(object,item);}
-void cJSON_AddItemToObjectCS(cJSON *object,const char *string,cJSON *item) {if (!item) return; if (!(item->type&cJSON_StringIsConst) && item->string) cJSON_free(item->string);item->string=(char*)string;item->type|=cJSON_StringIsConst;cJSON_AddItemToArray(object,item);}
-void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item) {cJSON_AddItemToArray(array,create_reference(item));}
-void cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item) {cJSON_AddItemToObject(object,string,create_reference(item));}
-
-cJSON *cJSON_DetachItemFromArray(cJSON *array,int which) {cJSON *c=array->child;while (c && which>0) c=c->next,which--;if (!c) return 0;
- if (c->prev) c->prev->next=c->next;if (c->next) c->next->prev=c->prev;if (c==array->child) array->child=c->next;c->prev=c->next=0;return c;}
-void cJSON_DeleteItemFromArray(cJSON *array,int which) {cJSON_Delete(cJSON_DetachItemFromArray(array,which));}
-cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string) {int i=0;cJSON *c=object->child;while (c && cJSON_strcasecmp(c->string,string)) i++,c=c->next;if (c) return cJSON_DetachItemFromArray(object,i);return 0;}
-void cJSON_DeleteItemFromObject(cJSON *object,const char *string) {cJSON_Delete(cJSON_DetachItemFromObject(object,string));}
+ if (buffer_at_offset(input_buffer)[0] != '[')
+ {
+ /* not an array */
+ goto fail;
+ }
-/* Replace array/object items with new ones. */
-void cJSON_InsertItemInArray(cJSON *array,int which,cJSON *newitem) {cJSON *c=array->child;while (c && which>0) c=c->next,which--;if (!c) {cJSON_AddItemToArray(array,newitem);return;}
- newitem->next=c;newitem->prev=c->prev;c->prev=newitem;if (c==array->child) array->child=newitem; else newitem->prev->next=newitem;}
-void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem) {cJSON *c=array->child;while (c && which>0) c=c->next,which--;if (!c) return;
- newitem->next=c->next;newitem->prev=c->prev;if (newitem->next) newitem->next->prev=newitem;
- if (c==array->child) array->child=newitem; else newitem->prev->next=newitem;c->next=c->prev=0;cJSON_Delete(c);}
-void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem){int i=0;cJSON *c=object->child;while(c && cJSON_strcasecmp(c->string,string))i++,c=c->next;if(c){newitem->string=cJSON_strdup(string);cJSON_ReplaceItemInArray(object,i,newitem);}}
+ 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;
+ }
-/* Create basic types: */
-cJSON *cJSON_CreateNull(void) {cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_NULL;return item;}
-cJSON *cJSON_CreateTrue(void) {cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_True;return item;}
-cJSON *cJSON_CreateFalse(void) {cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_False;return item;}
-cJSON *cJSON_CreateBool(int b) {cJSON *item=cJSON_New_Item();if(item)item->type=b?cJSON_True:cJSON_False;return item;}
-cJSON *cJSON_CreateNumber(double num) {cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueint=(int)num;}return item;}
-cJSON *cJSON_CreateDouble(double num,int i_num) {cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueint=i_num;}return item;}
-cJSON *cJSON_CreateString(const char *string) {cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_String;item->valuestring=cJSON_strdup(string);}return item;}
-cJSON *cJSON_CreateArray(void) {cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Array;return item;}
-cJSON *cJSON_CreateObject(void) {cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Object;return item;}
+ /* check if we skipped to the end of the buffer */
+ if (cannot_access_at_index(input_buffer, 0))
+ {
+ input_buffer->offset--;
+ goto fail;
+ }
-/* Create Arrays: */
-cJSON *cJSON_CreateIntArray(const int *numbers,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}
-cJSON *cJSON_CreateFloatArray(const float *numbers,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}
-cJSON *cJSON_CreateDoubleArray(const double *numbers,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}
-cJSON *cJSON_CreateStringArray(const char **strings,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateString(strings[i]);if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}
+ /* 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] == ','));
-/* Duplication */
-cJSON *cJSON_Duplicate(cJSON *item,int recurse)
-{
- cJSON *newitem,*cptr,*nptr=0,*newchild;
- /* Bail on bad ptr */
- if (!item) return 0;
- /* Create new item */
- newitem=cJSON_New_Item();
- if (!newitem) return 0;
- /* Copy over all vars */
- newitem->type=item->type&(~cJSON_IsReference),newitem->valueint=item->valueint,newitem->valuedouble=item->valuedouble;
- if (item->valuestring) {newitem->valuestring=cJSON_strdup(item->valuestring); if (!newitem->valuestring) {cJSON_Delete(newitem);return 0;}}
- if (item->string) {newitem->string=cJSON_strdup(item->string); if (!newitem->string) {cJSON_Delete(newitem);return 0;}}
- /* If non-recursive, then we're done! */
- if (!recurse) return newitem;
- /* Walk the ->next chain for the child. */
- cptr=item->child;
- while (cptr)
- {
- newchild=cJSON_Duplicate(cptr,1); /* Duplicate (with recurse) each item in the ->next chain */
- if (!newchild) {cJSON_Delete(newitem);return 0;}
- if (nptr) {nptr->next=newchild,newchild->prev=nptr;nptr=newchild;} /* If newitem->child already set, then crosswire ->prev and ->next and move on */
- else {newitem->child=newchild;nptr=newchild;} /* Set newitem->child and move to it */
- cptr=cptr->next;
- }
- return newitem;
-}
-
-void cJSON_Minify(char *json)
-{
- char *into=json;
- while (*json)
- {
- if (*json==' ') json++;
- else if (*json=='\t') json++; /* Whitespace characters. */
- else if (*json=='\r') json++;
- else if (*json=='\n') json++;
- else if (*json=='/' && json[1]=='/') while (*json && *json!='\n') json++; /* double-slash comments, to end of line. */
- else if (*json=='/' && json[1]=='*') {while (*json && !(*json=='*' && json[1]=='/')) json++;json+=2;} /* multiline comments. */
- else if (*json=='\"'){*into++=*json++;while (*json && *json!='\"'){if (*json=='\\') *into++=*json++;*into++=*json++;}*into++=*json++;} /* string literals, which are \" sensitive. */
- else *into++=*json++; /* All other characters. */
- }
- *into=0; /* and null-terminate. */
+ if (cannot_access_at_index(input_buffer, 0) || buffer_at_offset(input_buffer)[0] != ']')
+ {
+ goto fail; /* expected end of array */
+ }
+
+success:
+ input_buffer->depth--;
+
+ 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; /* faile 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--;
+
+ 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) + (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) && (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;
+ }
+ }
+
+ 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;
+}
+
+/* Add item to array/object. */
+CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item)
+{
+ cJSON *child = NULL;
+
+ if ((item == NULL) || (array == NULL))
+ {
+ return;
+ }
+
+ child = array->child;
+
+ if (child == NULL)
+ {
+ /* list is empty, start new one */
+ array->child = item;
+ }
+ else
+ {
+ /* append to the end */
+ while (child->next)
+ {
+ child = child->next;
+ }
+ suffix_object(child, item);
+ }
+}
+
+CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item)
+{
+ if (item == NULL)
+ {
+ return;
+ }
+
+ /* call cJSON_AddItemToObjectCS for code reuse */
+ cJSON_AddItemToObjectCS(object, (char*)cJSON_strdup((const unsigned char*)string, &global_hooks), item);
+ /* remove cJSON_StringIsConst flag */
+ item->type &= ~cJSON_StringIsConst;
+}
+
+#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
+
+/* Add an item to an object with constant string as key */
+CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item)
+{
+ if ((item == NULL) || (string == NULL))
+ {
+ return;
+ }
+ if (!(item->type & cJSON_StringIsConst) && item->string)
+ {
+ global_hooks.deallocate(item->string);
+ }
+ item->string = (char*)string;
+ item->type |= cJSON_StringIsConst;
+ cJSON_AddItemToArray(object, item);
+}
+#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+ #pragma GCC diagnostic pop
+#endif
+
+CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item)
+{
+ if (array == NULL)
+ {
+ return;
+ }
+
+ cJSON_AddItemToArray(array, create_reference(item, &global_hooks));
+}
+
+CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item)
+{
+ if ((object == NULL) || (string == NULL))
+ {
+ return;
+ }
+
+ cJSON_AddItemToObject(object, string, create_reference(item, &global_hooks));
+}
+
+CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item)
+{
+ if ((parent == NULL) || (item == NULL))
+ {
+ return NULL;
+ }
+
+ if (item->prev != NULL)
+ {
+ /* 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;
+ }
+ /* 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(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem)
+{
+ cJSON *after_inserted = NULL;
+
+ if (which < 0)
+ {
+ return;
+ }
+
+ after_inserted = get_array_item(array, (size_t)which);
+ if (after_inserted == NULL)
+ {
+ cJSON_AddItemToArray(array, newitem);
+ return;
+ }
+
+ 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;
+ }
+}
+
+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 (replacement->prev != NULL)
+ {
+ replacement->prev->next = replacement;
+ }
+ if (parent->child == item)
+ {
+ parent->child = replacement;
+ }
+
+ item->next = NULL;
+ item->prev = NULL;
+ cJSON_Delete(item);
+
+ return true;
+}
+
+CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem)
+{
+ if (which < 0)
+ {
+ 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;
+
+ cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement);
+
+ return true;
+}
+
+CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem)
+{
+ replace_item_in_object(object, string, newitem, false);
+}
+
+CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem)
+{
+ 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 b)
+{
+ cJSON *item = cJSON_New_Item(&global_hooks);
+ if(item)
+ {
+ item->type = b ? 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 <= 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_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;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ return a;
+}
+
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **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;
+ }
+
+ 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;
+ }
+
+ return newitem;
+
+fail:
+ if (newitem != NULL)
+ {
+ cJSON_Delete(newitem);
+ }
+
+ return NULL;
+}
+
+CJSON_PUBLIC(void) cJSON_Minify(char *json)
+{
+ unsigned char *into = (unsigned char*)json;
+
+ if (json == NULL)
+ {
+ return;
+ }
+
+ while (*json)
+ {
+ if (*json == ' ')
+ {
+ json++;
+ }
+ else if (*json == '\t')
+ {
+ /* Whitespace characters. */
+ json++;
+ }
+ else if (*json == '\r')
+ {
+ json++;
+ }
+ else if (*json=='\n')
+ {
+ json++;
+ }
+ else if ((*json == '/') && (json[1] == '/'))
+ {
+ /* double-slash comments, to end of line. */
+ while (*json && (*json != '\n'))
+ {
+ json++;
+ }
+ }
+ else if ((*json == '/') && (json[1] == '*'))
+ {
+ /* multiline comments. */
+ while (*json && !((*json == '*') && (json[1] == '/')))
+ {
+ json++;
+ }
+ json += 2;
+ }
+ else if (*json == '\"')
+ {
+ /* string literals, which are \" sensitive. */
+ *into++ = (unsigned char)*json++;
+ while (*json && (*json != '\"'))
+ {
+ if (*json == '\\')
+ {
+ *into++ = (unsigned char)*json++;
+ }
+ *into++ = (unsigned char)*json++;
+ }
+ *into++ = (unsigned char)*json++;
+ }
+ else
+ {
+ /* All other characters. */
+ *into++ = (unsigned char)*json++;
+ }
+ }
+
+ /* 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)) || cJSON_IsInvalid(a))
+ {
+ 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 (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.
+*/
+
+/* disable warnings about old C89 functions in MSVC */
+#if !defined(_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER)
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+
+#ifdef __GNUCC__
+#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 <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
+#include <limits.h>
+
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+#ifdef __GNUCC__
+#pragma GCC visibility pop
+#endif
+
#include "cJSON_Utils.h"
-static int cJSONUtils_strcasecmp(const char *s1,const char *s2)
-{
- if (!s1) return (s1==s2)?0:1;if (!s2) return 1;
- for(; tolower(*(const unsigned char *)s1) == tolower(*(const unsigned char *)s2); ++s1, ++s2) if(*s1 == 0) return 0;
- return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
-}
-
-/* JSON Pointer implementation: */
-static int cJSONUtils_Pstrcasecmp(const char *a,const char *e)
-{
- if (!a || !e) return (a==e)?0:1;
- for (;*a && *e && *e!='/';a++,e++) {
- if (*e=='~') {if (!(e[1]=='0' && *a=='~') && !(e[1]=='1' && *a=='/')) return 1; else e++;}
- else if (tolower(*(const unsigned char *)a)!=tolower(*(const unsigned char *)e)) return 1;
- }
- if ((*e!=0 && *e!='/') != (*a!=0)) return 1;
- return 0;
-}
-
-static int cJSONUtils_PointerEncodedstrlen(const char *s) {int l=0;for (;*s;s++,l++) if (*s=='~' || *s=='/') l++;return l;}
-
-static void cJSONUtils_PointerEncodedstrcpy(char *d,const char *s)
-{
- for (;*s;s++)
- {
- if (*s=='/') {*d++='~';*d++='1';}
- else if (*s=='~') {*d++='~';*d++='0';}
- else *d++=*s;
- }
- *d=0;
-}
-
-char *cJSONUtils_FindPointerFromObjectTo(cJSON *object,cJSON *target)
-{
- int type=object->type,c=0;cJSON *obj=0;
-
- if (object==target) return strdup("");
-
- for (obj=object->child;obj;obj=obj->next,c++)
- {
- char *found=cJSONUtils_FindPointerFromObjectTo(obj,target);
- if (found)
- {
- if (type==cJSON_Array)
- {
- char *ret=(char*)malloc(strlen(found)+23);
- sprintf(ret,"/%d%s",c,found);
- free(found);
- return ret;
- }
- else if (type==cJSON_Object)
- {
- char *ret=(char*)malloc(strlen(found)+cJSONUtils_PointerEncodedstrlen(obj->string)+2);
- *ret='/';cJSONUtils_PointerEncodedstrcpy(ret+1,obj->string);
- strcat(ret,found);
- free(found);
- return ret;
- }
- free(found);
- return 0;
- }
- }
- return 0;
-}
-
-cJSON *cJSONUtils_GetPointer(cJSON *object,const char *pointer)
-{
- while (*pointer++=='/' && object)
- {
- if (object->type==cJSON_Array)
- {
- int which=0; while (*pointer>='0' && *pointer<='9') which=(10*which) + *pointer++ - '0';
- if (*pointer && *pointer!='/') return 0;
- object=cJSON_GetArrayItem(object,which);
- }
- else if (object->type==cJSON_Object)
- {
- object=object->child; while (object && cJSONUtils_Pstrcasecmp(object->string,pointer)) object=object->next; /* GetObjectItem. */
- while (*pointer && *pointer!='/') pointer++;
- }
- else return 0;
- }
- return object;
+/* define our own boolean type */
+#define true ((cJSON_bool)1)
+#define false ((cJSON_bool)0)
+
+static unsigned char* cJSONUtils_strdup(const unsigned char* const string)
+{
+ size_t length = 0;
+ unsigned char *copy = NULL;
+
+ length = strlen((const char*)string) + sizeof("");
+ copy = (unsigned char*) cJSON_malloc(length);
+ if (copy == NULL)
+ {
+ return NULL;
+ }
+ memcpy(copy, string, length);
+
+ return copy;
+}
+
+/* string comparison which doesn't consider NULL pointers equal */
+static int compare_strings(const unsigned char *string1, const unsigned char *string2, const cJSON_bool case_sensitive)
+{
+ if ((string1 == NULL) || (string2 == NULL))
+ {
+ return 1;
+ }
+
+ if (string1 == string2)
+ {
+ return 0;
+ }
+
+ if (case_sensitive)
+ {
+ return strcmp((const char*)string1, (const char*)string2);
+ }
+
+ for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++)
+ {
+ if (*string1 == '\0')
+ {
+ return 0;
+ }
+ }
+
+ return tolower(*string1) - tolower(*string2);
+}
+
+/* Compare the next path element of two JSON pointers, two NULL pointers are considered unequal: */
+static cJSON_bool compare_pointers(const unsigned char *name, const unsigned char *pointer, const cJSON_bool case_sensitive)
+{
+ if ((name == NULL) || (pointer == NULL))
+ {
+ return false;
+ }
+
+ for (; (*name != '\0') && (*pointer != '\0') && (*pointer != '/'); (void)name++, pointer++) /* compare until next '/' */
+ {
+ if (*pointer == '~')
+ {
+ /* check for escaped '~' (~0) and '/' (~1) */
+ if (((pointer[1] != '0') || (*name != '~')) && ((pointer[1] != '1') || (*name != '/')))
+ {
+ /* invalid escape sequence or wrong character in *name */
+ return false;
+ }
+ else
+ {
+ pointer++;
+ }
+ }
+ else if ((!case_sensitive && (tolower(*name) != tolower(*pointer))) || (case_sensitive && (*name != *pointer)))
+ {
+ return false;
+ }
+ }
+ if (((*pointer != 0) && (*pointer != '/')) != (*name != 0))
+ {
+ /* one string has ended, the other not */
+ return false;;
+ }
+
+ return true;
+}
+
+/* calculate the length of a string if encoded as JSON pointer with ~0 and ~1 escape sequences */
+static size_t pointer_encoded_length(const unsigned char *string)
+{
+ size_t length;
+ for (length = 0; *string != '\0'; (void)string++, length++)
+ {
+ /* character needs to be escaped? */
+ if ((*string == '~') || (*string == '/'))
+ {
+ length++;
+ }
+ }
+
+ return length;
+}
+
+/* copy a string while escaping '~' and '/' with ~0 and ~1 JSON pointer escape codes */
+static void encode_string_as_pointer(unsigned char *destination, const unsigned char *source)
+{
+ for (; source[0] != '\0'; (void)source++, destination++)
+ {
+ if (source[0] == '/')
+ {
+ destination[1] = '1';
+ destination++;
+ }
+ else if (source[0] == '~')
+ {
+ destination[0] = '~';
+ destination[1] = '1';
+ destination++;
+ }
+ else
+ {
+ destination[0] = source[0];
+ }
+ }
+
+ destination[0] = '\0';
+}
+
+CJSON_PUBLIC(char *) cJSONUtils_FindPointerFromObjectTo(const cJSON * const object, const cJSON * const target)
+{
+ size_t child_index = 0;
+ cJSON *current_child = 0;
+
+ if ((object == NULL) || (target == NULL))
+ {
+ return NULL;
+ }
+
+ if (object == target)
+ {
+ /* found */
+ return (char*)cJSONUtils_strdup((const unsigned char*)"");
+ }
+
+ /* recursively search all children of the object or array */
+ for (current_child = object->child; current_child != NULL; (void)(current_child = current_child->next), child_index++)
+ {
+ unsigned char *target_pointer = (unsigned char*)cJSONUtils_FindPointerFromObjectTo(current_child, target);
+ /* found the target? */
+ if (target_pointer != NULL)
+ {
+ if (cJSON_IsArray(object))
+ {
+ /* reserve enough memory for a 64 bit integer + '/' and '\0' */
+ unsigned char *full_pointer = (unsigned char*)cJSON_malloc(strlen((char*)target_pointer) + 20 + sizeof("/"));
+ /* check if conversion to unsigned long is valid
+ * This should be eliminated at compile time by dead code elimination
+ * if size_t is an alias of unsigned long, or if it is bigger */
+ if (child_index > ULONG_MAX)
+ {
+ cJSON_free(target_pointer);
+ return NULL;
+ }
+ sprintf((char*)full_pointer, "/%lu%s", (unsigned long)child_index, target_pointer); /* /<array_index><path> */
+ cJSON_free(target_pointer);
+
+ return (char*)full_pointer;
+ }
+
+ if (cJSON_IsObject(object))
+ {
+ unsigned char *full_pointer = (unsigned char*)cJSON_malloc(strlen((char*)target_pointer) + pointer_encoded_length((unsigned char*)current_child->string) + 2);
+ full_pointer[0] = '/';
+ encode_string_as_pointer(full_pointer + 1, (unsigned char*)current_child->string);
+ strcat((char*)full_pointer, (char*)target_pointer);
+ cJSON_free(target_pointer);
+
+ return (char*)full_pointer;
+ }
+
+ /* reached leaf of the tree, found nothing */
+ cJSON_free(target_pointer);
+ return NULL;
+ }
+ }
+
+ /* not found */
+ return NULL;
+}
+
+/* non broken version of cJSON_GetArrayItem */
+static cJSON *get_array_item(const cJSON *array, size_t item)
+{
+ cJSON *child = array ? array->child : NULL;
+ while ((child != NULL) && (item > 0))
+ {
+ item--;
+ child = child->next;
+ }
+
+ return child;
+}
+
+static cJSON_bool decode_array_index_from_pointer(const unsigned char * const pointer, size_t * const index)
+{
+ size_t parsed_index = 0;
+ size_t position = 0;
+
+ if ((pointer[0] == '0') && ((pointer[1] != '\0') && (pointer[1] != '/')))
+ {
+ /* leading zeroes are not permitted */
+ return 0;
+ }
+
+ for (position = 0; (pointer[position] >= '0') && (pointer[0] <= '9'); position++)
+ {
+ parsed_index = (10 * parsed_index) + (size_t)(pointer[position] - '0');
+
+ }
+
+ if ((pointer[position] != '\0') && (pointer[position] != '/'))
+ {
+ return 0;
+ }
+
+ *index = parsed_index;
+
+ return 1;
+}
+
+static cJSON *get_item_from_pointer(cJSON * const object, const char * pointer, const cJSON_bool case_sensitive)
+{
+ cJSON *current_element = object;
+
+ if (pointer == NULL)
+ {
+ return NULL;
+ }
+
+ /* follow path of the pointer */
+ while ((pointer[0] == '/') && (current_element != NULL))
+ {
+ pointer++;
+ if (cJSON_IsArray(current_element))
+ {
+ size_t index = 0;
+ if (!decode_array_index_from_pointer((const unsigned char*)pointer, &index))
+ {
+ return NULL;
+ }
+
+ current_element = get_array_item(current_element, index);
+ }
+ else if (cJSON_IsObject(current_element))
+ {
+ current_element = current_element->child;
+ /* GetObjectItem. */
+ while ((current_element != NULL) && !compare_pointers((unsigned char*)current_element->string, (const unsigned char*)pointer, case_sensitive))
+ {
+ current_element = current_element->next;
+ }
+ }
+ else
+ {
+ return NULL;
+ }
+
+ /* skip to the next path token or end of string */
+ while ((pointer[0] != '\0') && (pointer[0] != '/'))
+ {
+ pointer++;
+ }
+ }
+
+ return current_element;
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointer(cJSON * const object, const char *pointer)
+{
+ return get_item_from_pointer(object, pointer, false);
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointerCaseSensitive(cJSON * const object, const char *pointer)
+{
+ return get_item_from_pointer(object, pointer, true);
}
/* JSON Patch implementation. */
-static void cJSONUtils_InplaceDecodePointerString(char *string)
-{
- char *s2=string;
- for (;*string;s2++,string++) *s2=(*string!='~')?(*string):((*(++string)=='0')?'~':'/');
- *s2=0;
-}
-
-static cJSON *cJSONUtils_PatchDetach(cJSON *object,const char *path)
-{
- char *parentptr=0,*childptr=0;cJSON *parent=0,*ret=0;
-
- parentptr=strdup(path); childptr=strrchr(parentptr,'/'); if (childptr) *childptr++=0;
- parent=cJSONUtils_GetPointer(object,parentptr);
- cJSONUtils_InplaceDecodePointerString(childptr);
-
- if (!parent) ret=0; /* Couldn't find object to remove child from. */
- else if (parent->type==cJSON_Array) ret=cJSON_DetachItemFromArray(parent,atoi(childptr));
- else if (parent->type==cJSON_Object) ret=cJSON_DetachItemFromObject(parent,childptr);
- free(parentptr);
- return ret;
-}
-
-static int cJSONUtils_Compare(cJSON *a,cJSON *b)
-{
- if (a->type!=b->type) return -1; /* mismatched type. */
- switch (a->type)
- {
- case cJSON_Number: return (a->valueint!=b->valueint || a->valuedouble!=b->valuedouble)?-2:0; /* numeric mismatch. */
- case cJSON_String: return (strcmp(a->valuestring,b->valuestring)!=0)?-3:0; /* string mismatch. */
- case cJSON_Array: for (a=a->child,b=b->child;a && b;a=a->next,b=b->next) {int err=cJSONUtils_Compare(a,b);if (err) return err;}
- return (a || b)?-4:0; /* array size mismatch. */
- case cJSON_Object:
- cJSONUtils_SortObject(a);
- cJSONUtils_SortObject(b);
- a=a->child,b=b->child;
- while (a && b)
- {
- int err;
- if (cJSONUtils_strcasecmp(a->string,b->string)) return -6; /* missing member */
- err=cJSONUtils_Compare(a,b);if (err) return err;
- a=a->next,b=b->next;
- }
- return (a || b)?-5:0; /* object length mismatch */
-
- default: break;
- }
- return 0;
-}
-
-static int cJSONUtils_ApplyPatch(cJSON *object,cJSON *patch)
-{
- cJSON *op=0,*path=0,*value=0,*parent=0;int opcode=0;char *parentptr=0,*childptr=0;
-
- op=cJSON_GetObjectItem(patch,"op");
- path=cJSON_GetObjectItem(patch,"path");
- if (!op || !path) return 2; /* malformed patch. */
-
- if (!strcmp(op->valuestring,"add")) opcode=0;
- else if (!strcmp(op->valuestring,"remove")) opcode=1;
- else if (!strcmp(op->valuestring,"replace"))opcode=2;
- else if (!strcmp(op->valuestring,"move")) opcode=3;
- else if (!strcmp(op->valuestring,"copy")) opcode=4;
- else if (!strcmp(op->valuestring,"test")) return cJSONUtils_Compare(cJSONUtils_GetPointer(object,path->valuestring),cJSON_GetObjectItem(patch,"value"));
- else return 3; /* unknown opcode. */
-
- if (opcode==1 || opcode==2) /* Remove/Replace */
- {
- cJSON_Delete(cJSONUtils_PatchDetach(object,path->valuestring)); /* Get rid of old. */
- if (opcode==1) return 0; /* For Remove, this is job done. */
- }
-
- if (opcode==3 || opcode==4) /* Copy/Move uses "from". */
- {
- cJSON *from=cJSON_GetObjectItem(patch,"from"); if (!from) return 4; /* missing "from" for copy/move. */
-
- if (opcode==3) value=cJSONUtils_PatchDetach(object,from->valuestring);
- if (opcode==4) value=cJSONUtils_GetPointer(object,from->valuestring);
- if (!value) return 5; /* missing "from" for copy/move. */
- if (opcode==4) value=cJSON_Duplicate(value,1);
- if (!value) return 6; /* out of memory for copy/move. */
- }
- else /* Add/Replace uses "value". */
- {
- value=cJSON_GetObjectItem(patch,"value");
- if (!value) return 7; /* missing "value" for add/replace. */
- value=cJSON_Duplicate(value,1);
- if (!value) return 8; /* out of memory for add/replace. */
- }
-
- /* Now, just add "value" to "path". */
-
- parentptr=strdup(path->valuestring); childptr=strrchr(parentptr,'/'); if (childptr) *childptr++=0;
- parent=cJSONUtils_GetPointer(object,parentptr);
- cJSONUtils_InplaceDecodePointerString(childptr);
-
- /* add, remove, replace, move, copy, test. */
- if (!parent) {free(parentptr); cJSON_Delete(value); return 9;} /* Couldn't find object to add to. */
- else if (parent->type==cJSON_Array)
- {
- if (!strcmp(childptr,"-")) cJSON_AddItemToArray(parent,value);
- else cJSON_InsertItemInArray(parent,atoi(childptr),value);
- }
- else if (parent->type==cJSON_Object)
- {
- cJSON_DeleteItemFromObject(parent,childptr);
- cJSON_AddItemToObject(parent,childptr,value);
- }
- else
- {
- cJSON_Delete(value);
- }
- free(parentptr);
- return 0;
-}
-
-
-int cJSONUtils_ApplyPatches(cJSON *object,cJSON *patches)
-{
- int err;
- if (patches->type!=cJSON_Array) return 1; /* malformed patches. */
- if (patches) patches=patches->child;
- while (patches)
- {
- if ((err=cJSONUtils_ApplyPatch(object,patches))) return err;
- patches=patches->next;
- }
- return 0;
-}
-
-static void cJSONUtils_GeneratePatch(cJSON *patches,const char *op,const char *path,const char *suffix,cJSON *val)
-{
- cJSON *patch=cJSON_CreateObject();
- cJSON_AddItemToObject(patch,"op",cJSON_CreateString(op));
- if (suffix)
- {
- char *newpath=(char*)malloc(strlen(path)+cJSONUtils_PointerEncodedstrlen(suffix)+2);
- cJSONUtils_PointerEncodedstrcpy(newpath+sprintf(newpath,"%s/",path),suffix);
- cJSON_AddItemToObject(patch,"path",cJSON_CreateString(newpath));
- free(newpath);
- }
- else cJSON_AddItemToObject(patch,"path",cJSON_CreateString(path));
- if (val) cJSON_AddItemToObject(patch,"value",cJSON_Duplicate(val,1));
- cJSON_AddItemToArray(patches,patch);
-}
-
-void cJSONUtils_AddPatchToArray(cJSON *array,const char *op,const char *path,cJSON *val) {cJSONUtils_GeneratePatch(array,op,path,0,val);}
-
-static void cJSONUtils_CompareToPatch(cJSON *patches,const char *path,cJSON *from,cJSON *to)
-{
- if (from->type!=to->type) {cJSONUtils_GeneratePatch(patches,"replace",path,0,to); return; }
-
- switch (from->type)
- {
- case cJSON_Number:
- if (from->valueint!=to->valueint || from->valuedouble!=to->valuedouble)
- cJSONUtils_GeneratePatch(patches,"replace",path,0,to);
- return;
-
- case cJSON_String:
- if (strcmp(from->valuestring,to->valuestring)!=0)
- cJSONUtils_GeneratePatch(patches,"replace",path,0,to);
- return;
-
- case cJSON_Array:
- {
- int c;char *newpath=(char*)malloc(strlen(path)+23); /* Allow space for 64bit int. */
- for (c=0,from=from->child,to=to->child;from && to;from=from->next,to=to->next,c++){
- sprintf(newpath,"%s/%d",path,c); cJSONUtils_CompareToPatch(patches,newpath,from,to);
- }
- for (;from;from=from->next,c++) {sprintf(newpath,"%d",c); cJSONUtils_GeneratePatch(patches,"remove",path,newpath,0); }
- for (;to;to=to->next,c++) cJSONUtils_GeneratePatch(patches,"add",path,"-",to);
- free(newpath);
- return;
- }
-
- case cJSON_Object:
- {
- cJSON *a,*b;
- cJSONUtils_SortObject(from);
- cJSONUtils_SortObject(to);
-
- a=from->child,b=to->child;
- while (a || b)
- {
- int diff=(!a)?1:(!b)?-1:cJSONUtils_strcasecmp(a->string,b->string);
- if (!diff)
- {
- char *newpath=(char*)malloc(strlen(path)+cJSONUtils_PointerEncodedstrlen(a->string)+2);
- cJSONUtils_PointerEncodedstrcpy(newpath+sprintf(newpath,"%s/",path),a->string);
- cJSONUtils_CompareToPatch(patches,newpath,a,b);
- free(newpath);
- a=a->next;
- b=b->next;
- }
- else if (diff<0) {cJSONUtils_GeneratePatch(patches,"remove",path,a->string,0); a=a->next;}
- else {cJSONUtils_GeneratePatch(patches,"add",path,b->string,b); b=b->next;}
- }
- return;
- }
-
- default: break;
- }
-}
-
-
-cJSON* cJSONUtils_GeneratePatches(cJSON *from,cJSON *to)
-{
- cJSON *patches=cJSON_CreateArray();
- cJSONUtils_CompareToPatch(patches,"",from,to);
- return patches;
-}
-
-
-static cJSON *cJSONUtils_SortList(cJSON *list)
-{
- cJSON *first=list,*second=list,*ptr=list;
-
- if (!list || !list->next) return list; /* One entry is sorted already. */
-
- while (ptr && ptr->next && cJSONUtils_strcasecmp(ptr->string,ptr->next->string)<0) ptr=ptr->next; /* Test for list sorted. */
- if (!ptr || !ptr->next) return list; /* Leave sorted lists unmodified. */
- ptr=list;
-
- while (ptr) {second=second->next;ptr=ptr->next;if (ptr) ptr=ptr->next;} /* Walk two pointers to find the middle. */
- if (second && second->prev) second->prev->next=0; /* Split the lists */
-
- first=cJSONUtils_SortList(first); /* Recursively sort the sub-lists. */
- second=cJSONUtils_SortList(second);
- list=ptr=0;
-
- while (first && second) /* Merge the sub-lists */
- {
- if (cJSONUtils_strcasecmp(first->string,second->string)<0)
- {
- if (!list) list=ptr=first;
- else {ptr->next=first;first->prev=ptr;ptr=first;}
- first=first->next;
- }
- else
- {
- if (!list) list=ptr=second;
- else {ptr->next=second;second->prev=ptr;ptr=second;}
- second=second->next;
- }
- }
- if (first) { if (!list) return first; ptr->next=first; first->prev=ptr; } /* Append any tails. */
- if (second) { if (!list) return second; ptr->next=second; second->prev=ptr; }
-
- return list;
-}
-
-void cJSONUtils_SortObject(cJSON *object) {object->child=cJSONUtils_SortList(object->child);}
-
-cJSON* cJSONUtils_MergePatch(cJSON *target, cJSON *patch)
-{
- if (!patch || patch->type != cJSON_Object) {cJSON_Delete(target);return cJSON_Duplicate(patch,1);}
- if (!target || target->type != cJSON_Object) {cJSON_Delete(target);target=cJSON_CreateObject();}
-
- patch=patch->child;
- while (patch)
- {
- if (patch->type == cJSON_NULL) cJSON_DeleteItemFromObject(target,patch->string);
- else
- {
- cJSON *replaceme=cJSON_DetachItemFromObject(target,patch->string);
- cJSON_AddItemToObject(target,patch->string,cJSONUtils_MergePatch(replaceme,patch));
- }
- patch=patch->next;
- }
- return target;
-}
-
-cJSON *cJSONUtils_GenerateMergePatch(cJSON *from,cJSON *to)
-{
- cJSON *patch=0;
- if (!to) return cJSON_CreateNull();
- if (to->type!=cJSON_Object || !from || from->type!=cJSON_Object) return cJSON_Duplicate(to,1);
- cJSONUtils_SortObject(from);
- cJSONUtils_SortObject(to);
- from=from->child;to=to->child;
- patch=cJSON_CreateObject();
- while (from || to)
- {
- int compare=from?(to?strcmp(from->string,to->string):-1):1;
- if (compare<0)
- {
- cJSON_AddItemToObject(patch,from->string,cJSON_CreateNull());
- from=from->next;
- }
- else if (compare>0)
- {
- cJSON_AddItemToObject(patch,to->string,cJSON_Duplicate(to,1));
- to=to->next;
- }
- else
- {
- if (cJSONUtils_Compare(from,to)) cJSON_AddItemToObject(patch,to->string,cJSONUtils_GenerateMergePatch(from,to));
- from=from->next;to=to->next;
- }
- }
- if (!patch->child) {cJSON_Delete(patch);return 0;}
- return patch;
-}
\ No newline at end of file
+static void decode_pointer_inplace(unsigned char *string)
+{
+ unsigned char *decoded_string = string;
+
+ if (string == NULL) {
+ return;
+ }
+
+ for (; *string; (void)decoded_string++, string++)
+ {
+ if (string[0] == '~')
+ {
+ if (string[1] == '0')
+ {
+ decoded_string[0] = '~';
+ }
+ else if (string[1] == '1')
+ {
+ decoded_string[1] = '/';
+ }
+ else
+ {
+ /* invalid escape sequence */
+ return;
+ }
+
+ string++;
+ }
+ }
+
+ decoded_string[0] = '\0';
+}
+
+/* non-broken cJSON_DetachItemFromArray */
+static cJSON *detach_item_from_array(cJSON *array, size_t which)
+{
+ cJSON *c = array->child;
+ while (c && (which > 0))
+ {
+ c = c->next;
+ which--;
+ }
+ if (!c)
+ {
+ /* item doesn't exist */
+ return NULL;
+ }
+ if (c->prev)
+ {
+ /* not the first element */
+ c->prev->next = c->next;
+ }
+ if (c->next)
+ {
+ c->next->prev = c->prev;
+ }
+ if (c==array->child)
+ {
+ array->child = c->next;
+ }
+ /* make sure the detached item doesn't point anywhere anymore */
+ c->prev = c->next = NULL;
+
+ return c;
+}
+
+/* detach an item at the given path */
+static cJSON *detach_path(cJSON *object, const unsigned char *path, const cJSON_bool case_sensitive)
+{
+ unsigned char *parent_pointer = NULL;
+ unsigned char *child_pointer = NULL;
+ cJSON *parent = NULL;
+ cJSON *detached_item = NULL;
+
+ /* copy path and split it in parent and child */
+ parent_pointer = cJSONUtils_strdup(path);
+ if (parent_pointer == NULL) {
+ goto cleanup;
+ }
+
+ child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/'); /* last '/' */
+ if (child_pointer == NULL)
+ {
+ goto cleanup;
+ }
+ /* split strings */
+ child_pointer[0] = '\0';
+ child_pointer++;
+
+ parent = get_item_from_pointer(object, (char*)parent_pointer, case_sensitive);
+ decode_pointer_inplace(child_pointer);
+
+ if (cJSON_IsArray(parent))
+ {
+ size_t index = 0;
+ if (!decode_array_index_from_pointer(child_pointer, &index))
+ {
+ goto cleanup;
+ }
+ detached_item = detach_item_from_array(parent, index);
+ }
+ else if (cJSON_IsObject(parent))
+ {
+ detached_item = cJSON_DetachItemFromObject(parent, (char*)child_pointer);
+ }
+ else
+ {
+ /* Couldn't find object to remove child from. */
+ goto cleanup;
+ }
+
+cleanup:
+ if (parent_pointer != NULL)
+ {
+ cJSON_free(parent_pointer);
+ }
+
+ return detached_item;
+}
+
+/* sort lists using mergesort */
+static cJSON *sort_list(cJSON *list, const cJSON_bool case_sensitive)
+{
+ cJSON *first = list;
+ cJSON *second = list;
+ cJSON *current_item = list;
+ cJSON *result = list;
+ cJSON *result_tail = NULL;
+
+ if ((list == NULL) || (list->next == NULL))
+ {
+ /* One entry is sorted already. */
+ return result;
+ }
+
+ while ((current_item != NULL) && (current_item->next != NULL) && (compare_strings((unsigned char*)current_item->string, (unsigned char*)current_item->next->string, case_sensitive) < 0))
+ {
+ /* Test for list sorted. */
+ current_item = current_item->next;
+ }
+ if ((current_item == NULL) || (current_item->next == NULL))
+ {
+ /* Leave sorted lists unmodified. */
+ return result;
+ }
+
+ /* reset pointer to the beginning */
+ current_item = list;
+ while (current_item != NULL)
+ {
+ /* Walk two pointers to find the middle. */
+ second = second->next;
+ current_item = current_item->next;
+ /* advances current_item two steps at a time */
+ if (current_item != NULL)
+ {
+ current_item = current_item->next;
+ }
+ }
+ if ((second != NULL) && (second->prev != NULL))
+ {
+ /* Split the lists */
+ second->prev->next = NULL;
+ }
+
+ /* Recursively sort the sub-lists. */
+ first = sort_list(first, case_sensitive);
+ second = sort_list(second, case_sensitive);
+ result = NULL;
+
+ /* Merge the sub-lists */
+ while ((first != NULL) && (second != NULL))
+ {
+ cJSON *smaller = NULL;
+ if (compare_strings((unsigned char*)first->string, (unsigned char*)second->string, false) < 0)
+ {
+ smaller = first;
+ }
+ else
+ {
+ smaller = second;
+ }
+
+ if (result == NULL)
+ {
+ /* start merged list with the smaller element */
+ result_tail = smaller;
+ result = smaller;
+ }
+ else
+ {
+ /* add smaller element to the list */
+ result_tail->next = smaller;
+ smaller->prev = result_tail;
+ result_tail = smaller;
+ }
+
+ if (first == smaller)
+ {
+ first = first->next;
+ }
+ else
+ {
+ second = second->next;
+ }
+ }
+
+ if (first != NULL)
+ {
+ /* Append rest of first list. */
+ if (result == NULL)
+ {
+ return first;
+ }
+ result_tail->next = first;
+ first->prev = result_tail;
+ }
+ if (second != NULL)
+ {
+ /* Append rest of second list */
+ if (result == NULL)
+ {
+ return second;
+ }
+ result_tail->next = second;
+ second->prev = result_tail;
+ }
+
+ return result;
+}
+
+static void sort_object(cJSON * const object, const cJSON_bool case_sensitive)
+{
+ if (object == NULL)
+ {
+ return;
+ }
+ object->child = sort_list(object->child, case_sensitive);
+}
+
+static cJSON_bool compare_json(cJSON *a, cJSON *b, const cJSON_bool case_sensitive)
+{
+ if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)))
+ {
+ /* mismatched type. */
+ return false;
+ }
+ switch (a->type & 0xFF)
+ {
+ case cJSON_Number:
+ /* numeric mismatch. */
+ if ((a->valueint != b->valueint) || (a->valuedouble != b->valuedouble))
+ {
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+
+ case cJSON_String:
+ /* string mismatch. */
+ if (strcmp(a->valuestring, b->valuestring) != 0)
+ {
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+
+ case cJSON_Array:
+ for ((void)(a = a->child), b = b->child; (a != NULL) && (b != NULL); (void)(a = a->next), b = b->next)
+ {
+ cJSON_bool identical = compare_json(a, b, case_sensitive);
+ if (!identical)
+ {
+ return false;
+ }
+ }
+
+ /* array size mismatch? (one of both children is not NULL) */
+ if ((a != NULL) || (b != NULL))
+ {
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+
+ case cJSON_Object:
+ sort_object(a, case_sensitive);
+ sort_object(b, case_sensitive);
+ for ((void)(a = a->child), b = b->child; (a != NULL) && (b != NULL); (void)(a = a->next), b = b->next)
+ {
+ cJSON_bool identical = false;
+ /* compare object keys */
+ if (compare_strings((unsigned char*)a->string, (unsigned char*)b->string, case_sensitive))
+ {
+ /* missing member */
+ return false;
+ }
+ identical = compare_json(a, b, case_sensitive);
+ if (!identical)
+ {
+ return false;
+ }
+ }
+
+ /* object length mismatch (one of both children is not null) */
+ if ((a != NULL) || (b != NULL))
+ {
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+
+ default:
+ break;
+ }
+
+ /* null, true or false */
+ return true;
+}
+
+/* non broken version of cJSON_InsertItemInArray */
+static cJSON_bool insert_item_in_array(cJSON *array, size_t which, cJSON *newitem)
+{
+ cJSON *child = array->child;
+ while (child && (which > 0))
+ {
+ child = child->next;
+ which--;
+ }
+ if (which > 0)
+ {
+ /* item is after the end of the array */
+ return 0;
+ }
+ if (child == NULL)
+ {
+ cJSON_AddItemToArray(array, newitem);
+ return 1;
+ }
+
+ /* insert into the linked list */
+ newitem->next = child;
+ newitem->prev = child->prev;
+ child->prev = newitem;
+
+ /* was it at the beginning */
+ if (child == array->child)
+ {
+ array->child = newitem;
+ }
+ else
+ {
+ newitem->prev->next = newitem;
+ }
+
+ return 1;
+}
+
+static cJSON *get_object_item(const cJSON * const object, const char* name, const cJSON_bool case_sensitive)
+{
+ if (case_sensitive)
+ {
+ return cJSON_GetObjectItemCaseSensitive(object, name);
+ }
+
+ return cJSON_GetObjectItem(object, name);
+}
+
+enum patch_operation { INVALID, ADD, REMOVE, REPLACE, MOVE, COPY, TEST };
+
+static enum patch_operation decode_patch_operation(const cJSON * const patch, const cJSON_bool case_sensitive)
+{
+ cJSON *operation = get_object_item(patch, "op", case_sensitive);
+ if (!cJSON_IsString(operation))
+ {
+ return INVALID;
+ }
+
+ if (strcmp(operation->valuestring, "add") == 0)
+ {
+ return ADD;
+ }
+
+ if (strcmp(operation->valuestring, "remove") == 0)
+ {
+ return REMOVE;
+ }
+
+ if (strcmp(operation->valuestring, "replace") == 0)
+ {
+ return REPLACE;
+ }
+
+ if (strcmp(operation->valuestring, "move") == 0)
+ {
+ return MOVE;
+ }
+
+ if (strcmp(operation->valuestring, "copy") == 0)
+ {
+ return COPY;
+ }
+
+ if (strcmp(operation->valuestring, "test") == 0)
+ {
+ return TEST;
+ }
+
+ return INVALID;
+}
+
+/* overwrite and existing item with another one and free resources on the way */
+static void overwrite_item(cJSON * const root, const cJSON replacement)
+{
+ if (root == NULL)
+ {
+ return;
+ }
+
+ if (root->string != NULL)
+ {
+ cJSON_free(root->string);
+ }
+ if (root->valuestring != NULL)
+ {
+ cJSON_free(root->valuestring);
+ }
+ if (root->child != NULL)
+ {
+ cJSON_Delete(root->child);
+ }
+
+ memcpy(root, &replacement, sizeof(cJSON));
+}
+
+static int apply_patch(cJSON *object, const cJSON *patch, const cJSON_bool case_sensitive)
+{
+ cJSON *path = NULL;
+ cJSON *value = NULL;
+ cJSON *parent = NULL;
+ enum patch_operation opcode = INVALID;
+ unsigned char *parent_pointer = NULL;
+ unsigned char *child_pointer = NULL;
+ int status = 0;
+
+ path = get_object_item(patch, "path", case_sensitive);
+ if (!cJSON_IsString(path))
+ {
+ /* malformed patch. */
+ status = 2;
+ goto cleanup;
+ }
+
+ opcode = decode_patch_operation(patch, case_sensitive);
+ if (opcode == INVALID)
+ {
+ status = 3;
+ goto cleanup;
+ }
+ else if (opcode == TEST)
+ {
+ /* compare value: {...} with the given path */
+ status = !compare_json(get_item_from_pointer(object, path->valuestring, case_sensitive), get_object_item(patch, "value", case_sensitive), case_sensitive);
+ goto cleanup;
+ }
+
+ /* special case for replacing the root */
+ if (path->valuestring[0] == '\0')
+ {
+ if (opcode == REMOVE)
+ {
+ static const cJSON invalid = { NULL, NULL, NULL, cJSON_Invalid, NULL, 0, 0, NULL};
+
+ overwrite_item(object, invalid);
+
+ status = 0;
+ goto cleanup;
+ }
+
+ if ((opcode == REPLACE) || (opcode == ADD))
+ {
+ value = get_object_item(patch, "value", case_sensitive);
+ if (value == NULL)
+ {
+ /* missing "value" for add/replace. */
+ status = 7;
+ goto cleanup;
+ }
+
+ value = cJSON_Duplicate(value, 1);
+ if (value == NULL)
+ {
+ /* out of memory for add/replace. */
+ status = 8;
+ goto cleanup;
+ }
+
+ overwrite_item(object, *value);
+
+ /* delete the duplicated value */
+ cJSON_free(value);
+ value = NULL;
+
+ /* the string "value" isn't needed */
+ if (object->string != NULL)
+ {
+ cJSON_free(object->string);
+ object->string = NULL;
+ }
+
+ status = 0;
+ goto cleanup;
+ }
+ }
+
+ if ((opcode == REMOVE) || (opcode == REPLACE))
+ {
+ /* Get rid of old. */
+ cJSON *old_item = detach_path(object, (unsigned char*)path->valuestring, case_sensitive);
+ if (old_item == NULL)
+ {
+ status = 13;
+ goto cleanup;
+ }
+ cJSON_Delete(old_item);
+ if (opcode == REMOVE)
+ {
+ /* For Remove, this job is done. */
+ status = 0;
+ goto cleanup;
+ }
+ }
+
+ /* Copy/Move uses "from". */
+ if ((opcode == MOVE) || (opcode == COPY))
+ {
+ cJSON *from = get_object_item(patch, "from", case_sensitive);
+ if (from == NULL)
+ {
+ /* missing "from" for copy/move. */
+ status = 4;
+ goto cleanup;
+ }
+
+ if (opcode == MOVE)
+ {
+ value = detach_path(object, (unsigned char*)from->valuestring, case_sensitive);
+ }
+ if (opcode == COPY)
+ {
+ value = get_item_from_pointer(object, from->valuestring, case_sensitive);
+ }
+ if (value == NULL)
+ {
+ /* missing "from" for copy/move. */
+ status = 5;
+ goto cleanup;
+ }
+ if (opcode == COPY)
+ {
+ value = cJSON_Duplicate(value, 1);
+ }
+ if (value == NULL)
+ {
+ /* out of memory for copy/move. */
+ status = 6;
+ goto cleanup;
+ }
+ }
+ else /* Add/Replace uses "value". */
+ {
+ value = get_object_item(patch, "value", case_sensitive);
+ if (value == NULL)
+ {
+ /* missing "value" for add/replace. */
+ status = 7;
+ goto cleanup;
+ }
+ value = cJSON_Duplicate(value, 1);
+ if (value == NULL)
+ {
+ /* out of memory for add/replace. */
+ status = 8;
+ goto cleanup;
+ }
+ }
+
+ /* Now, just add "value" to "path". */
+
+ /* split pointer in parent and child */
+ parent_pointer = cJSONUtils_strdup((unsigned char*)path->valuestring);
+ child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/');
+ if (child_pointer != NULL)
+ {
+ child_pointer[0] = '\0';
+ child_pointer++;
+ }
+ parent = get_item_from_pointer(object, (char*)parent_pointer, case_sensitive);
+ decode_pointer_inplace(child_pointer);
+
+ /* add, remove, replace, move, copy, test. */
+ if ((parent == NULL) || (child_pointer == NULL))
+ {
+ /* Couldn't find object to add to. */
+ status = 9;
+ goto cleanup;
+ }
+ else if (cJSON_IsArray(parent))
+ {
+ if (strcmp((char*)child_pointer, "-") == 0)
+ {
+ cJSON_AddItemToArray(parent, value);
+ value = NULL;
+ }
+ else
+ {
+ size_t index = 0;
+ if (!decode_array_index_from_pointer(child_pointer, &index))
+ {
+ status = 11;
+ goto cleanup;
+ }
+
+ if (!insert_item_in_array(parent, index, value))
+ {
+ status = 10;
+ goto cleanup;
+ }
+ value = NULL;
+ }
+ }
+ else if (cJSON_IsObject(parent))
+ {
+ if (case_sensitive)
+ {
+ cJSON_DeleteItemFromObjectCaseSensitive(parent, (char*)child_pointer);
+ }
+ else
+ {
+ cJSON_DeleteItemFromObject(parent, (char*)child_pointer);
+ }
+ cJSON_AddItemToObject(parent, (char*)child_pointer, value);
+ value = NULL;
+ }
+
+cleanup:
+ if (value != NULL)
+ {
+ cJSON_Delete(value);
+ }
+ if (parent_pointer != NULL)
+ {
+ cJSON_free(parent_pointer);
+ }
+
+ return status;
+}
+
+CJSON_PUBLIC(int) cJSONUtils_ApplyPatches(cJSON * const object, const cJSON * const patches)
+{
+ const cJSON *current_patch = NULL;
+ int status = 0;
+
+ if (!cJSON_IsArray(patches))
+ {
+ /* malformed patches. */
+ return 1;
+ }
+
+ if (patches != NULL)
+ {
+ current_patch = patches->child;
+ }
+
+ while (current_patch != NULL)
+ {
+ status = apply_patch(object, current_patch, false);
+ if (status != 0)
+ {
+ return status;
+ }
+ current_patch = current_patch->next;
+ }
+
+ return 0;
+}
+
+CJSON_PUBLIC(int) cJSONUtils_ApplyPatchesCaseSensitive(cJSON * const object, const cJSON * const patches)
+{
+ const cJSON *current_patch = NULL;
+ int status = 0;
+
+ if (!cJSON_IsArray(patches))
+ {
+ /* malformed patches. */
+ return 1;
+ }
+
+ if (patches != NULL)
+ {
+ current_patch = patches->child;
+ }
+
+ while (current_patch != NULL)
+ {
+ status = apply_patch(object, current_patch, true);
+ if (status != 0)
+ {
+ return status;
+ }
+ current_patch = current_patch->next;
+ }
+
+ return 0;
+}
+
+static void compose_patch(cJSON * const patches, const unsigned char * const operation, const unsigned char * const path, const unsigned char *suffix, const cJSON * const value)
+{
+ cJSON *patch = NULL;
+
+ if ((patches == NULL) || (operation == NULL) || (path == NULL))
+ {
+ return;
+ }
+
+ patch = cJSON_CreateObject();
+ if (patch == NULL)
+ {
+ return;
+ }
+ cJSON_AddItemToObject(patch, "op", cJSON_CreateString((const char*)operation));
+
+ if (suffix == NULL)
+ {
+ cJSON_AddItemToObject(patch, "path", cJSON_CreateString((const char*)path));
+ }
+ else
+ {
+ size_t suffix_length = pointer_encoded_length(suffix);
+ size_t path_length = strlen((const char*)path);
+ unsigned char *full_path = (unsigned char*)cJSON_malloc(path_length + suffix_length + sizeof("/"));
+
+ sprintf((char*)full_path, "%s/", (const char*)path);
+ encode_string_as_pointer(full_path + path_length + 1, suffix);
+
+ cJSON_AddItemToObject(patch, "path", cJSON_CreateString((const char*)full_path));
+ cJSON_free(full_path);
+ }
+
+ if (value != NULL)
+ {
+ cJSON_AddItemToObject(patch, "value", cJSON_Duplicate(value, 1));
+ }
+ cJSON_AddItemToArray(patches, patch);
+}
+
+CJSON_PUBLIC(void) cJSONUtils_AddPatchToArray(cJSON * const array, const char * const operation, const char * const path, const cJSON * const value)
+{
+ compose_patch(array, (const unsigned char*)operation, (const unsigned char*)path, NULL, value);
+}
+
+static void create_patches(cJSON * const patches, const unsigned char * const path, cJSON * const from, cJSON * const to, const cJSON_bool case_sensitive)
+{
+ if ((from == NULL) || (to == NULL))
+ {
+ return;
+ }
+
+ if ((from->type & 0xFF) != (to->type & 0xFF))
+ {
+ compose_patch(patches, (const unsigned char*)"replace", path, 0, to);
+ return;
+ }
+
+ switch (from->type & 0xFF)
+ {
+ case cJSON_Number:
+ if ((from->valueint != to->valueint) || (from->valuedouble != to->valuedouble))
+ {
+ compose_patch(patches, (const unsigned char*)"replace", path, NULL, to);
+ }
+ return;
+
+ case cJSON_String:
+ if (strcmp(from->valuestring, to->valuestring) != 0)
+ {
+ compose_patch(patches, (const unsigned char*)"replace", path, NULL, to);
+ }
+ return;
+
+ case cJSON_Array:
+ {
+ size_t index = 0;
+ cJSON *from_child = from->child;
+ cJSON *to_child = to->child;
+ unsigned char *new_path = (unsigned char*)cJSON_malloc(strlen((const char*)path) + 20 + sizeof("/")); /* Allow space for 64bit int. log10(2^64) = 20 */
+
+ /* generate patches for all array elements that exist in both "from" and "to" */
+ for (index = 0; (from_child != NULL) && (to_child != NULL); (void)(from_child = from_child->next), (void)(to_child = to_child->next), index++)
+ {
+ /* check if conversion to unsigned long is valid
+ * This should be eliminated at compile time by dead code elimination
+ * if size_t is an alias of unsigned long, or if it is bigger */
+ if (index > ULONG_MAX)
+ {
+ cJSON_free(new_path);
+ return;
+ }
+ sprintf((char*)new_path, "%s/%lu", path, (unsigned long)index); /* path of the current array element */
+ create_patches(patches, new_path, from_child, to_child, case_sensitive);
+ }
+
+ /* remove leftover elements from 'from' that are not in 'to' */
+ for (; (from_child != NULL); (void)(from_child = from_child->next))
+ {
+ /* check if conversion to unsigned long is valid
+ * This should be eliminated at compile time by dead code elimination
+ * if size_t is an alias of unsigned long, or if it is bigger */
+ if (index > ULONG_MAX)
+ {
+ cJSON_free(new_path);
+ return;
+ }
+ sprintf((char*)new_path, "%lu", (unsigned long)index);
+ compose_patch(patches, (const unsigned char*)"remove", path, new_path, NULL);
+ }
+ /* add new elements in 'to' that were not in 'from' */
+ for (; (to_child != NULL); (void)(to_child = to_child->next), index++)
+ {
+ compose_patch(patches, (const unsigned char*)"add", path, (const unsigned char*)"-", to_child);
+ }
+ cJSON_free(new_path);
+ return;
+ }
+
+ case cJSON_Object:
+ {
+ cJSON *from_child = NULL;
+ cJSON *to_child = NULL;
+ sort_object(from, case_sensitive);
+ sort_object(to, case_sensitive);
+
+ from_child = from->child;
+ to_child = to->child;
+ /* for all object values in the object with more of them */
+ while ((from_child != NULL) || (to_child != NULL))
+ {
+ int diff;
+ if (from_child == NULL)
+ {
+ diff = 1;
+ }
+ else if (to_child == NULL)
+ {
+ diff = -1;
+ }
+ else
+ {
+ diff = compare_strings((unsigned char*)from_child->string, (unsigned char*)to_child->string, case_sensitive);
+ }
+
+ if (diff == 0)
+ {
+ /* both object keys are the same */
+ size_t path_length = strlen((const char*)path);
+ size_t from_child_name_length = pointer_encoded_length((unsigned char*)from_child->string);
+ unsigned char *new_path = (unsigned char*)cJSON_malloc(path_length + from_child_name_length + sizeof("/"));
+
+ sprintf((char*)new_path, "%s/", path);
+ encode_string_as_pointer(new_path + path_length + 1, (unsigned char*)from_child->string);
+
+ /* create a patch for the element */
+ create_patches(patches, new_path, from_child, to_child, case_sensitive);
+ cJSON_free(new_path);
+
+ from_child = from_child->next;
+ to_child = to_child->next;
+ }
+ else if (diff < 0)
+ {
+ /* object element doesn't exist in 'to' --> remove it */
+ compose_patch(patches, (const unsigned char*)"remove", path, (unsigned char*)from_child->string, NULL);
+
+ from_child = from_child->next;
+ }
+ else
+ {
+ /* object element doesn't exist in 'from' --> add it */
+ compose_patch(patches, (const unsigned char*)"add", path, (unsigned char*)to_child->string, to_child);
+
+ to_child = to_child->next;
+ }
+ }
+ return;
+ }
+
+ default:
+ break;
+ }
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatches(cJSON * const from, cJSON * const to)
+{
+ cJSON *patches = NULL;
+
+ if ((from == NULL) || (to == NULL))
+ {
+ return NULL;
+ }
+
+ patches = cJSON_CreateArray();
+ create_patches(patches, (const unsigned char*)"", from, to, false);
+
+ return patches;
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatchesCaseSensitive(cJSON * const from, cJSON * const to)
+{
+ cJSON *patches = NULL;
+
+ if ((from == NULL) || (to == NULL))
+ {
+ return NULL;
+ }
+
+ patches = cJSON_CreateArray();
+ create_patches(patches, (const unsigned char*)"", from, to, true);
+
+ return patches;
+}
+
+CJSON_PUBLIC(void) cJSONUtils_SortObject(cJSON * const object)
+{
+ sort_object(object, false);
+}
+
+CJSON_PUBLIC(void) cJSONUtils_SortObjectCaseSensitive(cJSON * const object)
+{
+ sort_object(object, true);
+}
+
+static cJSON *merge_patch(cJSON *target, const cJSON * const patch, const cJSON_bool case_sensitive)
+{
+ cJSON *patch_child = NULL;
+
+ if (!cJSON_IsObject(patch))
+ {
+ /* scalar value, array or NULL, just duplicate */
+ cJSON_Delete(target);
+ return cJSON_Duplicate(patch, 1);
+ }
+
+ if (!cJSON_IsObject(target))
+ {
+ cJSON_Delete(target);
+ target = cJSON_CreateObject();
+ }
+
+ patch_child = patch->child;
+ while (patch_child != NULL)
+ {
+ if (cJSON_IsNull(patch_child))
+ {
+ /* NULL is the indicator to remove a value, see RFC7396 */
+ if (case_sensitive)
+ {
+ cJSON_DeleteItemFromObjectCaseSensitive(target, patch_child->string);
+ }
+ else
+ {
+ cJSON_DeleteItemFromObject(target, patch_child->string);
+ }
+ }
+ else
+ {
+ cJSON *replace_me = NULL;
+ cJSON *replacement = NULL;
+
+ if (case_sensitive)
+ {
+ replace_me = cJSON_DetachItemFromObjectCaseSensitive(target, patch_child->string);
+ }
+ else
+ {
+ replace_me = cJSON_DetachItemFromObject(target, patch_child->string);
+ }
+
+ replacement = merge_patch(replace_me, patch_child, case_sensitive);
+ if (replacement == NULL)
+ {
+ return NULL;
+ }
+
+ cJSON_AddItemToObject(target, patch_child->string, replacement);
+ }
+ patch_child = patch_child->next;
+ }
+ return target;
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch)
+{
+ return merge_patch(target, patch, false);
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatchCaseSensitive(cJSON *target, const cJSON * const patch)
+{
+ return merge_patch(target, patch, true);
+}
+
+static cJSON *generate_merge_patch(cJSON * const from, cJSON * const to, const cJSON_bool case_sensitive)
+{
+ cJSON *from_child = NULL;
+ cJSON *to_child = NULL;
+ cJSON *patch = NULL;
+ if (to == NULL)
+ {
+ /* patch to delete everything */
+ return cJSON_CreateNull();
+ }
+ if (!cJSON_IsObject(to) || !cJSON_IsObject(from))
+ {
+ return cJSON_Duplicate(to, 1);
+ }
+
+ sort_object(from, case_sensitive);
+ sort_object(to, case_sensitive);
+
+ from_child = from->child;
+ to_child = to->child;
+ patch = cJSON_CreateObject();
+ while (from_child || to_child)
+ {
+ int diff;
+ if (from_child != NULL)
+ {
+ if (to_child != NULL)
+ {
+ diff = strcmp(from_child->string, to_child->string);
+ }
+ else
+ {
+ diff = -1;
+ }
+ }
+ else
+ {
+ diff = 1;
+ }
+
+ if (diff < 0)
+ {
+ /* from has a value that to doesn't have -> remove */
+ cJSON_AddItemToObject(patch, from_child->string, cJSON_CreateNull());
+
+ from_child = from_child->next;
+ }
+ else if (diff > 0)
+ {
+ /* to has a value that from doesn't have -> add to patch */
+ cJSON_AddItemToObject(patch, to_child->string, cJSON_Duplicate(to_child, 1));
+
+ to_child = to_child->next;
+ }
+ else
+ {
+ /* object key exists in both objects */
+ if (!compare_json(from_child, to_child, case_sensitive))
+ {
+ /* not identical --> generate a patch */
+ cJSON_AddItemToObject(patch, to_child->string, cJSONUtils_GenerateMergePatch(from_child, to_child));
+ }
+
+ /* next key in the object */
+ from_child = from_child->next;
+ to_child = to_child->next;
+ }
+ }
+ if (patch->child == NULL)
+ {
+ /* no patch generated */
+ cJSON_Delete(patch);
+ return NULL;
+ }
+
+ return patch;
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatch(cJSON * const from, cJSON * const to)
+{
+ return generate_merge_patch(from, to, false);
+}
+
+CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatchCaseSensitive(cJSON * const from, cJSON * const to)
+{
+ return generate_merge_patch(from, to, true);
+}
projects / esp-idf / commitdiff