Method FactorElements

IO/XMLParser/vtkXMLUtilities.cxx:528–559

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//------------------------------------------------------------------------------
void vtkXMLUtilities::FactorElements(vtkXMLDataElement* tree)
{
  if (!tree)
  {
    return;
  }

  // Create the factored pool, and add it to the tree so that it can
  // factor itself too

  vtkXMLDataElement* pool = vtkXMLDataElement::New();
  pool->SetName(VTK_XML_UTILITIES_FACTORED_POOL_NAME);
  pool->SetAttributeEncoding(tree->GetAttributeEncoding());
  tree->AddNestedElement(pool);

  // Factor the tree, as long as some factorization has occurred
  // (multiple pass might be needed because larger trees are factored
  // first)

  while (vtkXMLUtilities::FactorElementsInternal(tree, tree, pool))
  {
  }

  // Nothing factored, remove the useless pool

  if (!pool->GetNumberOfNestedElements())
  {
    tree->RemoveNestedElement(pool);
  }

  pool->Delete();
}

//------------------------------------------------------------------------------
int vtkXMLUtilities::FactorElementsInternal(