Hi Frank,
I opened the code and was hoping for something easy to replace file types, but PHP is beyond my knowledge.
I did play with it trying to make sense of existing code for the images and apply it to the fonts. Sorry if I butchered it and probably is totally different from what I was thinking, I am just trying to help.
// Do the @font-face!
$fontreplace = array();
preg_match_all('#(*url\((?!data)(.*)\)[^;}]*)(?:;|$|})#Usm',$code,$matches);
if ((is_array($matches)) && (!empty($this->cdn_url))) {
// change @font-face urls to cdn-url
foreach($matches[2] as $count => $quotedurl) {
$url = trim($quotedurl," \t\n\r\x0B\"'");
$cdn_url=$this->url_replace_cdn($url);
$fontreplace[$matches[1][$count]] = str_replace($quotedurl,$cdn_url,$matches[1][$count]);
}
$ipath = $this->getpath($url);
}
if($ipath != false && preg_match('#\.(eot|woff2|woff|ttf|svg)$#',$ipath)) {
unset($icheck);
// Add it to the list for replacement
$fontreplace[$matches[1][$count]] = str_replace($quotedurl,$matches[1][$count]).";\n*".str_replace($quotedurl,'mhtml:%%MHTML%%!'.$mhtmlcount,$matches[1][$count]).";\n_".$matches[1][$count].';';
}
}
}
if(!empty($fontreplace)) {
$code = str_replace(array_keys($fontreplace),array_values($fontreplace),$code);
}