curl https://codeload.github.com/ezyang/htmlpurifier/tar.gz/v4.7.0 -o htmlpurifier-4.7.0.tar.gz
tar xzf htmlpurifier-4.7.0.tar.gz --strip-components 1 htmlpurifier-4.7.0/LICENSE
tar xzf htmlpurifier-4.7.0.tar.gz --strip-components 2 htmlpurifier-4.7.0/library/*.php
tar xzf htmlpurifier-4.7.0.tar.gz --strip-components 3 htmlpurifier-4.7.0/library/HTMLPurifier/*
rm htmlpurifier-4.7.0.tar.gz
