diff --git a/cJSON.c b/cJSON.c index 595d4cd..c56d44a 100644 --- a/cJSON.c +++ b/cJSON.c @@ -529,3 +529,30 @@ cJSON *cJSON_CreateIntArray(int *numbers,int count) {int i;cJSON *n=0,*p=0,*a cJSON *cJSON_CreateFloatArray(float *numbers,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && ichild=n;else suffix_object(p,n);p=n;}return a;} cJSON *cJSON_CreateDoubleArray(double *numbers,int count) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();for(i=0;a && ichild=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 && ichild=n;else suffix_object(p,n);p=n;}return a;} + +/* 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 (item->string) newitem->string=cJSON_strdup(item->string); + /* 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 (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; +} diff --git a/cJSON.h b/cJSON.h index 97d529a..4df09a7 100644 --- a/cJSON.h +++ b/cJSON.h @@ -114,6 +114,12 @@ extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string); extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem); extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem); +/* Duplicate a cJSON item */ +extern cJSON *cJSON_Duplicate(cJSON *item,int 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. */ + #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())