deep copy and clone

tinyxml2.cpp

@@ -771,6 +771,18 @@ void XMLNode::SetValue( const char* str, bool staticMem )
     }
 }
 
+XMLNode* XMLNode::DeepClone(XMLDocument* document) const
+{
+	XMLNode* clone = this->ShallowClone(document);
+	if (!clone) return 0;
+
+	for (const XMLNode* child = this->FirstChild(); child; child = child->NextSibling()) {
+		XMLNode* childClone = child->DeepClone(document);
+		TIXMLASSERT(childClone);
+		clone->InsertEndChild(childClone);
+	}
+	return clone;
+}
 
 void XMLNode::DeleteChildren()
 {
@@ -2006,6 +2018,17 @@ void XMLDocument::Clear()
 }
 
 
+void XMLDocument::DeepCopy(XMLDocument* target)
+{
+	TIXMLASSERT(target);
+	TIXMLASSERT(target != this);
+
+	target->Clear();
+	for (const XMLNode* node = this->FirstChild(); node; node = node->NextSibling()) {
+		target->InsertEndChild(node->DeepClone(target));
+	}
+}
+
 XMLElement* XMLDocument::NewElement( const char* name )
 {
     TIXMLASSERT( sizeof( XMLElement ) == _elementPool.ItemSize() );