Add named constructor xml::Document::clone

libs/xmlutil/Document.cpp

@@ -42,6 +42,18 @@ Document Document::create()
 	return Document(doc);
 }
 
+Document Document::clone(const Document& source)
+{
+	if (source._xmlDoc == nullptr)
+	{
+		// Nothing to clone, create an empty doc
+		return Document(nullptr);
+	}
+
+	// Create a deep copy of the other doc
+	return Document(xmlCopyDoc(source._xmlDoc, 1));
+}
+
 void Document::addTopLevelNode(const std::string& name)
 {
 	std::lock_guard<std::mutex> lock(_lock);

libs/xmlutil/Document.h

@@ -37,7 +37,7 @@ class Document
 	// Use the isValid() method to check if the load was successful.
 	Document(const std::string& filename);
 
-	// Copy constructor
+	// Copy constructor (note: does not create an actual copy of the internal xmlDoc)
 	Document(const Document& other);
 
 	// Destructor, frees the xmlDocPtr
@@ -46,6 +46,9 @@ class Document
 	// Creates a new xml::Document object (allocates a new xmlDoc)
 	static Document create();
 
+	// Creates a deep copy of the given Document
+	static Document clone(const Document& source);
+
 	// Add a new toplevel node with the given name to this Document
 	void addTopLevelNode(const std::string& name);