gistfile1.nginxconf

set $utm_hash "";

if ($args ~* "^(.*&?)utm_source=([a-zA-Z0-9._-]*)(&(.*))?") {
	set $args $1$4;
	set $utm_hash "$utm_hash&utm_source=$2";
}

if ($args ~* "^(.*&?)utm_medium=([a-zA-Z0-9._-]*)(&(.*))?") {
	set $args $1$4;
	set $utm_hash "$utm_hash&utm_medium=$2";
}

if ($args ~* "^(.*&?)utm_campaign=([a-zA-Z0-9._-]*)(&(.*))?") {
	set $args $1$4;
	set $utm_hash "$utm_hash&utm_campaign=$2";
}

if ($args ~* "^(.*&?)utm_content=([a-zA-Z0-9._-]*)(&(.*))?") {
	set $args $1$4;
	set $utm_hash "$utm_hash&utm_content=$2";
}

if ($args ~* "^(.*&?)utm_term=([a-zA-Z0-9._-]*)(&(.*))?") {
	set $args $1$4;
	set $utm_hash "$utm_hash&utm_term=$2";
}

if ($args ~* "^(.*)&$") {
	set $args $1;
}

if ($utm_hash ~* "^&(.*)$") {
	set $utm_hash $1;
}

set $redirect "";

if ($utm_hash != "") {
	set $redirect "H";
}

if ($args != "") {
	set $redirect "Q$redirect";
}

if ($redirect = "QH") {
	rewrite "(.*)" $1?$args#$utm_hash? permanent;
}

if ($redirect = "H") {
	rewrite "(.*)" $1#$utm_hash? permanent;
}