Detatch and Remove objects from Arrays/Objects.

git-svn-id: http://svn.code.sf.net/p/cjson/code@21 e3330c51-1366-4df0-8b21-3ccf24e3d50e

cJSON.c

@@ -458,6 +458,11 @@ void   cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item)	{if (
 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;
+	if (c->prev) c->prev->next=c->next;if (c->next) c->next->prev=c->prev;if (c==array->child) array->child=c->next;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 && 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));}
 
 // Replace array/object items with new ones.
 void   cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem)		{cJSON *c=array->child;while (c && which>0) c=c->next,which--;if (!c) return;

cJSON.h

@@ -99,7 +99,12 @@ extern void	cJSON_AddItemToObject(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);
-	
+
+// 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);
 	
 // Update array items.
 extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);