tex to xml conversion through xslt

I know latex, but new in xslt (learning now), I need to convert the tex to xml file through XSLT (one of my friend suggest, but i failed to convert). Please suggest or give example to convert the files (below is the MWE),

documentclass{book}
begin{document}
chapter{Sample}

section{Section Head}

Sample Para text

subsection{Section Head 2}
Sample Para text

section{Section Head}
subsection{Section Head 2}

Sample Para text

end{document}