Any full feature xml library available?

[Domain]

I need a xml library which support document entity or xinclude.
The xml may like this:


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE doc [
     <!ENTITY data SYSTEM "data.xml">
]>
<root xmlns:xi="http://www.w3.org/2001/XInclude">
     &data;
     <xi:include href="table.xml"/>
</root>