Adopt Google Font proxy for Wikimedia.it WordPress theme
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Authored by valerio.bozzolan on May 29 2021, 10:04 PM.

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	<?php
	/*
	* Enable a Google Font proxy
	*
	* Author: Valerio Bozzolan
	* License: GNU General Public License v2 or later
	* Date: 2021
	*
	* See https://phabricator.wikimedia.org/T282613
	* See https://gitpull.it/T776
	* See https://gitpull.it/R26:f8b39ca15e8ba48a92fb0d58c2772e9b02691059
	*/

	/**
	* Local Google Font cache
	*/
	define( 'GOOGLE_FONT_PROXY', 'fonts.wikimedia.it' );

	/**
	* Convert a Google Font domain to your local proxy cache
	*
	* See https://phabricator.wikimedia.org/T266998
	*/
	function convert_google_font_to_local_proxy( $url ) {
	return str_replace( 'fonts.googleapis.com', GOOGLE_FONT_PROXY, $url );
	}

	/**
	* Avoid Google Fonts in your stylesheets
	*
	* https://phabricator.wikimedia.org/T282613
	*/
	add_filter( 'style_loader_src', 'convert_google_font_to_local_proxy' );

	/**
	* Avoid Google Fonts in your DNS prefetch
	*
	* https://phabricator.wikimedia.org/T282613
	*/
	add_filter( 'wp_resource_hints', function( $urls ) {
	foreach( $urls as & $url ) {
	$url = convert_google_font_to_local_proxy( $url );
	}
	return $urls;
	} );

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