cJSON.c File Reference

#include <string.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <float.h>
#include <limits.h>
#include <ctype.h>
#include "cJSON.h"

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Data Structures
struct	printbuffer

Functions
const char *	cJSON_GetErrorPtr (void)
void	cJSON_InitHooks (cJSON_Hooks *hooks)
void	cJSON_Delete (cJSON *c)
cJSON *	cJSON_ParseWithOpts (const char *value, const char **return_parse_end, int require_null_terminated)
cJSON *	cJSON_Parse (const char *value)
char *	cJSON_Print (cJSON *item)
char *	cJSON_PrintUnformatted (cJSON *item)
char *	cJSON_PrintBuffered (cJSON *item, int prebuffer, int fmt)
int	cJSON_GetArraySize (cJSON *array)
cJSON *	cJSON_GetArrayItem (cJSON *array, int item)
cJSON *	cJSON_GetObjectItem (cJSON *object, const char *string)
int	cJSON_HasObjectItem (cJSON *object, const char *string)
void	cJSON_AddItemToArray (cJSON *array, cJSON *item)
void	cJSON_AddItemToObject (cJSON *object, const char *string, cJSON *item)
void	cJSON_AddItemToObjectCS (cJSON *object, const char *string, cJSON *item)
void	cJSON_AddItemReferenceToArray (cJSON *array, cJSON *item)
void	cJSON_AddItemReferenceToObject (cJSON *object, const char *string, cJSON *item)
cJSON *	cJSON_DetachItemFromArray (cJSON *array, int which)
void	cJSON_DeleteItemFromArray (cJSON *array, int which)
cJSON *	cJSON_DetachItemFromObject (cJSON *object, const char *string)
void	cJSON_DeleteItemFromObject (cJSON *object, const char *string)
void	cJSON_InsertItemInArray (cJSON *array, int which, cJSON *newitem)
void	cJSON_ReplaceItemInArray (cJSON *array, int which, cJSON *newitem)
void	cJSON_ReplaceItemInObject (cJSON *object, const char *string, cJSON *newitem)
cJSON *	cJSON_CreateNull (void)
cJSON *	cJSON_CreateTrue (void)
cJSON *	cJSON_CreateFalse (void)
cJSON *	cJSON_CreateBool (int b)
cJSON *	cJSON_CreateUInt8 (double num)
cJSON *	cJSON_CreateUInt16 (double num)
cJSON *	cJSON_CreateNumber (double num)
cJSON *	cJSON_CreateString (const char *string)
cJSON *	cJSON_CreateArray (void)
cJSON *	cJSON_CreateObject (void)
cJSON *	cJSON_CreateUInt8Array (const uint8_t *numbers, int count)
cJSON *	cJSON_CreateUInt16Array (const uint16_t *numbers, int count)
cJSON *	cJSON_CreateIntArray (const int *numbers, int count)
cJSON *	cJSON_CreateFloatArray (const float *numbers, int count)
cJSON *	cJSON_CreateDoubleArray (const double *numbers, int count)
cJSON *	cJSON_CreateStringArray (const char **strings, int count)
cJSON *	cJSON_Duplicate (cJSON *item, int recurse)
void	cJSON_Minify (char *json)

Function Documentation

void cJSON_AddItemReferenceToArray	(	cJSON *	array,
		cJSON *	item
	)

References cJSON_AddItemToArray().

{cJSON_AddItemToArray(array,create_reference(item));}

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void cJSON_AddItemReferenceToObject	(	cJSON *	object,
		const char *	string,
		cJSON *	item
	)

References cJSON_AddItemToObject().

{cJSON_AddItemToObject(object,string,create_reference(item));}

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void cJSON_AddItemToArray	(	cJSON *	array,
		cJSON *	item
	)

References cJSON::child, and cJSON::next.

Referenced by cJSON_AddItemReferenceToArray(), cJSON_AddItemToObject(), cJSON_AddItemToObjectCS(), and cJSON_InsertItemInArray().

{cJSON *c=array->child;if (!item) return; if (!c) {array->child=item;} else {while (c && c->next) c=c->next; suffix_object(c,item);}}

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void cJSON_AddItemToObject	(	cJSON *	object,
		const char *	string,
		cJSON *	item
	)

References cJSON_AddItemToArray(), and cJSON::string.

Referenced by cJSON_AddItemReferenceToObject(), cJSONUtils_GenerateMergePatch(), cJSONUtils_MergePatch(), set_modbus_success_resp_str_with_data(), and test_json_encode().

{if (!item) return; if (item->string) cJSON_free(item->string);item->string=cJSON_strdup(string);cJSON_AddItemToArray(object,item);}

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void cJSON_AddItemToObjectCS	(	cJSON *	object,
		const char *	string,
		cJSON *	item
	)

References cJSON_AddItemToArray(), cJSON_StringIsConst, cJSON::string, and cJSON::type.

{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);}

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cJSON* cJSON_CreateArray

(

void

)

References cJSON_Array, and cJSON::type.

Referenced by cJSON_CreateDoubleArray(), cJSON_CreateFloatArray(), cJSON_CreateIntArray(), cJSON_CreateStringArray(), cJSON_CreateUInt16Array(), cJSON_CreateUInt8Array(), and cJSONUtils_GeneratePatches().

{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Array;return item;}

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cJSON* cJSON_CreateBool

(

int

b

)

References cJSON_False, cJSON_True, and cJSON::type.

{cJSON *item=cJSON_New_Item();if(item)item->type=b?cJSON_True:cJSON_False;return item;}

cJSON* cJSON_CreateDoubleArray	(	const double *	numbers,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateNumber(), and cJSON_Delete().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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cJSON* cJSON_CreateFalse

(

void

)

References cJSON_False, and cJSON::type.

{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_False;return item;}

cJSON* cJSON_CreateFloatArray	(	const float *	numbers,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateNumber(), and cJSON_Delete().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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cJSON* cJSON_CreateIntArray	(	const int *	numbers,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateNumber(), and cJSON_Delete().

Referenced by test_json_encode().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateNumber(numbers[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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cJSON* cJSON_CreateNull

(

void

)

References cJSON_NULL, and cJSON::type.

Referenced by cJSONUtils_GenerateMergePatch().

{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_NULL;return item;}

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cJSON* cJSON_CreateNumber

(

double

num

)

References cJSON_Number, cJSON::type, cJSON::valuedouble, and cJSON::valueint.

Referenced by cJSON_CreateDoubleArray(), cJSON_CreateFloatArray(), and cJSON_CreateIntArray().

{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueint=(long)num;}return item;}

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cJSON* cJSON_CreateObject

(

void

)

References cJSON_Object, and cJSON::type.

Referenced by cJSONUtils_GenerateMergePatch(), cJSONUtils_MergePatch(), mbtcp_get_response_timeout(), mbtcp_set_response_timeout(), set_modbus_fail_resp_str(), set_modbus_success_resp_str_with_data(), and test_json_encode().

{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Object;return item;}

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cJSON* cJSON_CreateString

(

const char *

string

)

References cJSON_Delete(), cJSON_String, cJSON::type, and cJSON::valuestring.

Referenced by cJSON_CreateStringArray().

{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_String;item->valuestring=cJSON_strdup(string);if(!item->valuestring){cJSON_Delete(item);return 0;}}return item;}

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cJSON* cJSON_CreateStringArray	(	const char **	strings,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateString(), and cJSON_Delete().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateString(strings[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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cJSON* cJSON_CreateTrue

(

void

)

References cJSON_True, and cJSON::type.

{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_True;return item;}

cJSON* cJSON_CreateUInt16

(

double

num

)

References cJSON_Number, cJSON::type, cJSON::valuedouble, and cJSON::valueuint16.

Referenced by cJSON_CreateUInt16Array().

{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueuint16=(uint16_t)num;}return item;}

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cJSON* cJSON_CreateUInt16Array	(	const uint16_t *	numbers,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateUInt16(), and cJSON_Delete().

Referenced by mbtcp_read_reg_req_fn().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateUInt16(numbers[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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cJSON* cJSON_CreateUInt8

(

double

num

)

References cJSON_Number, cJSON::type, cJSON::valuedouble, and cJSON::valueuint8.

Referenced by cJSON_CreateUInt8Array().

{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueuint8=(uint8_t)num;}return item;}

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cJSON* cJSON_CreateUInt8Array	(	const uint8_t *	numbers,
		int	count
	)

References cJSON_CreateArray(), cJSON_CreateUInt8(), and cJSON_Delete().

Referenced by mbtcp_read_bit_req_fn().

{int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && i<count;i++){n=cJSON_CreateUInt8(numbers[i]);if(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;}

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void cJSON_Delete

(

cJSON *

c

)

References cJSON::child, cJSON_Delete(), cJSON_IsReference, cJSON_StringIsConst, cJSON::next, cJSON::string, cJSON::type, and cJSON::valuestring.

Referenced by cJSON_CreateDoubleArray(), cJSON_CreateFloatArray(), cJSON_CreateIntArray(), cJSON_CreateString(), cJSON_CreateStringArray(), cJSON_CreateUInt16Array(), cJSON_CreateUInt8Array(), cJSON_Delete(), cJSON_DeleteItemFromArray(), cJSON_DeleteItemFromObject(), cJSON_Duplicate(), cJSON_ParseWithOpts(), cJSON_ReplaceItemInArray(), cJSONUtils_GenerateMergePatch(), cJSONUtils_MergePatch(), main(), mbtcp_get_response_timeout(), mbtcp_set_response_timeout(), set_modbus_fail_resp_str(), set_modbus_success_resp_str_with_data(), test_json_decode(), and test_json_encode().

{
    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;
    }
}

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void cJSON_DeleteItemFromArray	(	cJSON *	array,
		int	which
	)

References cJSON_Delete(), and cJSON_DetachItemFromArray().

{cJSON_Delete(cJSON_DetachItemFromArray(array,which));}

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void cJSON_DeleteItemFromObject	(	cJSON *	object,
		const char *	string
	)

References cJSON_Delete(), and cJSON_DetachItemFromObject().

Referenced by cJSONUtils_MergePatch().

{cJSON_Delete(cJSON_DetachItemFromObject(object,string));}

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cJSON* cJSON_DetachItemFromArray	(	cJSON *	array,
		int	which
	)

References cJSON::child, cJSON::next, and cJSON::prev.

Referenced by cJSON_DeleteItemFromArray(), and cJSON_DetachItemFromObject().

                                                                    {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;}

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cJSON* cJSON_DetachItemFromObject	(	cJSON *	object,
		const char *	string
	)

References cJSON::child, cJSON_DetachItemFromArray(), cJSON::next, and cJSON::string.

Referenced by cJSON_DeleteItemFromObject(), and cJSONUtils_MergePatch().

{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;}

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cJSON* cJSON_Duplicate	(	cJSON *	item,
		int	recurse
	)

References cJSON::child, cJSON_Delete(), cJSON_Duplicate(), cJSON_IsReference, cJSON::next, cJSON::prev, cJSON::string, cJSON::type, cJSON::valuedouble, cJSON::valueint, and cJSON::valuestring.

Referenced by cJSON_Duplicate(), cJSONUtils_GenerateMergePatch(), and cJSONUtils_MergePatch().

{
    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;
}

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cJSON* cJSON_GetArrayItem	(	cJSON *	array,
		int	item
	)

References cJSON::child, and cJSON::next.

Referenced by cJSONUtils_GetPointer(), mbtcp_multi_write_req_fn(), and test_json_decode().

{cJSON *c=array?array->child:0;while (c && item>0) item--,c=c->next; return c;}

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int cJSON_GetArraySize

(

cJSON *

array

)

References cJSON::child, and cJSON::next.

Referenced by mbtcp_multi_write_req_fn(), and test_json_decode().

{cJSON *c=array->child;int i=0;while(c)i++,c=c->next;return i;}

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const char* cJSON_GetErrorPtr

(

void

)

{return global_ep;}

cJSON* cJSON_GetObjectItem	(	cJSON *	object,
		const char *	string
	)

References cJSON::child, cJSON::next, and cJSON::string.

Referenced by cJSON_HasObjectItem(), json_get_char(), json_get_double(), json_get_int(), json_get_long(), json_set_double(), json_set_int(), mbtcp_multi_write_req_fn(), and test_json_decode().

{cJSON *c=object?object->child:0;while (c && cJSON_strcasecmp(c->string,string)) c=c->next; return c;}

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int cJSON_HasObjectItem	(	cJSON *	object,
		const char *	string
	)

References cJSON_GetObjectItem().

{return cJSON_GetObjectItem(object,string)?1:0;}

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void cJSON_InitHooks

(

cJSON_Hooks *

hooks

)

References cJSON_Hooks::free_fn, and cJSON_Hooks::malloc_fn.

{
    if (!hooks) { /* Reset hooks */
        cJSON_malloc = malloc;
        cJSON_free = free;
        return;
    }

    cJSON_malloc = (hooks->malloc_fn)?hooks->malloc_fn:malloc;
    cJSON_free   = (hooks->free_fn)?hooks->free_fn:free;
}

void cJSON_InsertItemInArray	(	cJSON *	array,
		int	which,
		cJSON *	newitem
	)

References cJSON::child, cJSON_AddItemToArray(), cJSON::next, and cJSON::prev.

                                                                            {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;}

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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. */
}

cJSON* cJSON_Parse

(

const char *

value

)

References cJSON_ParseWithOpts().

Referenced by file_to_json(), main(), and test_json_decode().

{return cJSON_ParseWithOpts(value,0,0);}

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cJSON* cJSON_ParseWithOpts	(	const char *	value,
		const char **	return_parse_end,
		int	require_null_terminated
	)

References cJSON_Delete().

Referenced by cJSON_Parse().

{
    const char *end=0,**ep=return_parse_end?return_parse_end:&global_ep;
    cJSON *c=cJSON_New_Item();
    *ep=0;
    if (!c) return 0;       /* memory fail */

    end=parse_value(c,skip(value),ep);
    if (!end)   {cJSON_Delete(c);return 0;} /* parse failure. ep is set. */

    /* 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;
}

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char* cJSON_Print

(

cJSON *

item

)

Referenced by json_to_file(), test_json_decode(), and test_json_encode().

{return print_value(item,0,1,0);}

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char* cJSON_PrintBuffered	(	cJSON *	item,
		int	prebuffer,
		int	fmt
	)

References printbuffer::buffer, printbuffer::length, and printbuffer::offset.

{
    printbuffer p;
    p.buffer=(char*)cJSON_malloc(prebuffer);
    p.length=prebuffer;
    p.offset=0;
    return print_value(item,0,fmt,&p);
}

char* cJSON_PrintUnformatted

(

cJSON *

item

)

Referenced by mbtcp_get_response_timeout(), mbtcp_set_response_timeout(), set_modbus_fail_resp_str(), and set_modbus_success_resp_str_with_data().

{return print_value(item,0,0,0);}

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void cJSON_ReplaceItemInArray	(	cJSON *	array,
		int	which,
		cJSON *	newitem
	)

References cJSON::child, cJSON_Delete(), cJSON::next, and cJSON::prev.

Referenced by cJSON_ReplaceItemInObject().

                                                                            {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);}

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void cJSON_ReplaceItemInObject	(	cJSON *	object,
		const char *	string,
		cJSON *	newitem
	)

References cJSON::child, cJSON_ReplaceItemInArray(), cJSON::next, and cJSON::string.

{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);}}

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