Rule-based restructuring of nodes

Question

Supposed I have the following XML file with nodes I would like to rearrange based on rules:

   
  Some text         


        

Answer 1

If you could have a rules.xml file living (for example) in the same directory as the XSLT stylesheet file, in (for example) the following format:

rules.xml

    

        KeyA
        KeyM
        KeyZ
    
    

        KeyL
        KeyN
        KeyP
    

you could then apply the following stylesheet to your input:

XSLT 1.0

to get the following result:

   

      
      Some text
      Some text
   
   

      Some text
      Some text
      Some text
   

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Edit:

To suppress section rules that do not have matching subsections in the input document, try: