File: /var/www/html/wp-content/plugins/wp-asset-clean-up/classes/OptimiseAssets/FontsGoogle.php
<?php
/** @noinspection MultipleReturnStatementsInspection */
namespace WpAssetCleanUp\OptimiseAssets;
use WpAssetCleanUp\Main;
use WpAssetCleanUp\Misc;
/**
* Class FontsGoogle
* @package WpAssetCleanUp\OptimiseAssets
*/
class FontsGoogle
{
/**
* @var string
*/
public static $containsStr = '//fonts.googleapis.com/';
/**
* @var string
*/
public static $matchesStr = '//fonts.googleapis.com/(css|icon)\?';
/**
*
*/
const NOSCRIPT_WEB_FONT_LOADER = '<span style="display: none;" data-name=wpacu-delimiter content="ASSET CLEANUP NOSCRIPT WEB FONT LOADER"></span>';
/**
*
*/
const COMBINED_LINK_DEL = '<span style="display: none;" data-name=wpacu-delimiter content="ASSET CLEANUP COMBINED LINK LOCATION"></span>';
/**
*
*/
public function init()
{
if (self::preventAnyChange()) {
return;
}
add_filter('wp_resource_hints', array($this, 'resourceHints'), PHP_INT_MAX, 2);
add_action('wp_head', array($this, 'preloadFontFiles'), 1);
add_action('wp_footer', static function() {
if ( OptimizeCommon::preventAnyFrontendOptimization() || Main::instance()->settings['google_fonts_remove'] ) {
return;
}
echo self::NOSCRIPT_WEB_FONT_LOADER;
}, PHP_INT_MAX);
add_filter('wpacu_html_source_after_optimization', static function($htmlSource) {
// Is the mark still there and wasn't replaced? Strip it
return str_replace(FontsGoogle::NOSCRIPT_WEB_FONT_LOADER, '', $htmlSource);
});
add_action('init', function() {
// don't apply any changes if not in the front-end view (e.g. Dashboard view)
// or test mode is enabled, and a guest user is accessing the page
if ( OptimizeCommon::preventAnyFrontendOptimization() || Main::instance()->settings['google_fonts_remove'] || ! Main::instance()->settings['google_fonts_display'] ) {
return;
}
add_filter('style_loader_src', array($this, 'alterGoogleFontLink'));
}, 20);
}
/**
* @param $urls
* @param $relationType
*
* @return array
*/
public function resourceHints($urls, $relationType)
{
// don't apply any changes if not in the front-end view (e.g. Dashboard view)
// or test mode is enabled, and a guest user is accessing the page
if (is_admin() || OptimizeCommon::preventAnyFrontendOptimization()) {
return $urls;
}
// Are the Google Fonts removed? Do not add it and strip any existing ones
if (! empty($urls) && Main::instance()->settings['google_fonts_remove']) {
foreach ($urls as $urlKey => $urlValue) {
if (is_string($urlValue) && ((stripos($urlValue, 'fonts.googleapis.com') !== false) || (stripos($urlValue, 'fonts.gstatic.com') !== false))) {
unset($urls[$urlKey]);
}
}
return $urls; // Finally, return the list after any removals
}
// Google Fonts "preconnect"
if ('preconnect' === $relationType
&& ! Main::instance()->settings['google_fonts_remove'] // "Remove Google Fonts" has to be turned off
&& Main::instance()->settings['google_fonts_preconnect']) { // Needs to be enabled within "Plugin Usage Preferences" in "Settings"
$urls[] = array(
'href' => 'https://fonts.gstatic.com/',
'crossorigin'
);
}
return $urls;
}
/**
*
*/
public function preloadFontFiles()
{
// Don't apply any changes if not in the front-end view (e.g. Dashboard view)
// or test mode is enabled, and a guest user is accessing the page
if ( OptimizeCommon::preventAnyFrontendOptimization() ) {
return;
}
if ( ! $preloadFontFiles = trim(Main::instance()->settings['google_fonts_preload_files']) ) {
return;
}
$preloadFontFilesArray = array();
if (strpos($preloadFontFiles, "\n") !== false) {
foreach (explode("\n", $preloadFontFiles) as $preloadFontFile) {
$preloadFontFile = esc_attr(trim($preloadFontFile));
if ( ! $preloadFontFile ) {
continue;
}
$preloadFontFilesArray[] = $preloadFontFile;
}
} else {
$preloadFontFiles = esc_attr(trim($preloadFontFiles));
if ($preloadFontFiles) {
$preloadFontFilesArray[] = $preloadFontFiles;
}
}
$preloadFontFilesArray = array_unique($preloadFontFilesArray);
$preloadFontFilesOutput = '';
// Finally, go through the list
if ( ! empty($preloadFontFilesArray) ) {
foreach ($preloadFontFilesArray as $preloadFontFile) {
$preloadFontFilesOutput .= '<link rel="preload" as="font" href="' . $preloadFontFile . '" data-wpacu-preload-google-font="1" crossorigin>' . "\n";
}
}
echo apply_filters('wpacu_preload_google_font_files_output', $preloadFontFilesOutput);
}
/**
* @param $htmlSource
*
* @return false|mixed|string|void
* @noinspection NestedAssignmentsUsageInspection
*/
public static function alterHtmlSource($htmlSource)
{
// don't apply any changes if not in the front-end view (e.g. Dashboard view)
// or test mode is enabled and a guest user is accessing the page
// or an AMP page is accessed
if ( OptimizeCommon::preventAnyFrontendOptimization() ) {
return $htmlSource;
}
/*
* Remove Google Fonts? Stop here as optimization is no longer relevant
*/
if (Main::instance()->settings['google_fonts_remove']) {
return FontsGoogleRemove::cleanHtmlSource($htmlSource);
}
/*
* Optimize Google Fonts
*/
if (stripos($htmlSource, self::$containsStr) !== false) {
// Cleaner HTML Source
$altHtmlSource = preg_replace( '@<(script|style|noscript)[^>]*?>.*?</\\1>@si', '', $htmlSource ); // strip irrelevant tags for the collection
$altHtmlSource = preg_replace( '/<!--[^>]*' . preg_quote( self::$containsStr, '/' ) . '.*?-->/', '', $altHtmlSource ); // strip any comments containing the string
// Get all valid LINKs that have the $string within them
preg_match_all( '#<link[^>]*' . self::$matchesStr . '.*(>)#Usmi', $altHtmlSource, $matchesFromLinkTags, PREG_SET_ORDER );
// Needs to match at least one to carry on with the replacements
if ( ! empty( $matchesFromLinkTags[0] ) ) {
if ( Main::instance()->settings['google_fonts_combine'] ) {
/*
* "Combine Google Fonts" IS enabled
*/
$finalCombinableLinks = $preloadedLinks = array();
foreach ( $matchesFromLinkTags as $linkTagArray ) {
$linkTag = $finalLinkTag = trim( trim( $linkTagArray[0], '"\'' ) );
// Extra checks to make sure it's a valid LINK tag
if ( ( strpos( $linkTag, "'" ) !== false && ( substr_count( $linkTag, "'" ) % 2 ) )
|| ( strpos( $linkTag, '"' ) !== false && ( substr_count( $linkTag, '"' ) % 2 ) )
|| ( trim( strip_tags( $linkTag ) ) !== '' ) ) {
continue;
}
// Check if the CSS has any 'data-wpacu-skip' attribute; if it does, do not continue and leave it as it is (non-combined)
if ( Misc::hasExactDataAttr($linkTag, 'data-wpacu-skip') ) {
continue;
}
$finalLinkHref = $linkHrefOriginal = Misc::getValueFromTag($linkTag);
// [START] Remove invalid requests with no font family
$urlParse = parse_url( str_replace( array('&', '&'), '&', $linkHrefOriginal ), PHP_URL_QUERY );
parse_str( $urlParse, $qStr );
if ( isset( $qStr['family'] ) && ! $qStr['family'] ) {
$htmlSource = str_replace( $linkTag, '', $htmlSource );
continue;
}
// [END] Remove invalid requests with no font family
// If anything is set apart from '[none set]', proceed
if ( Main::instance()->settings['google_fonts_display'] ) {
$finalLinkHref = self::alterGoogleFontLink( $linkHrefOriginal );
if ( $finalLinkHref !== $linkHrefOriginal ) {
$finalLinkTag = str_replace( $linkHrefOriginal, $finalLinkHref, $linkTag );
// Finally, alter the HTML source
$htmlSource = str_replace( $linkTag, $finalLinkTag, $htmlSource );
}
}
if ( preg_match( '/rel=(["\'])preload(["\'])/i', $finalLinkTag )
|| strpos( $finalLinkTag, 'data-wpacu-to-be-preloaded-basic' ) ) {
$preloadedLinks[] = $finalLinkHref;
}
$finalCombinableLinks[] = array( 'href' => $finalLinkHref, 'tag' => $finalLinkTag );
}
$preloadedLinks = array_unique( $preloadedLinks );
// Remove data for preloaded LINKs
if ( ! empty( $preloadedLinks ) ) {
foreach ( $finalCombinableLinks as $fclIndex => $combinableLinkData ) {
if ( in_array( $combinableLinkData['href'], $preloadedLinks ) ) {
unset( $finalCombinableLinks[ $fclIndex ] );
}
}
}
$finalCombinableLinks = array_values( $finalCombinableLinks );
// Only proceed with the optimization/combine if there's obviously at least 2 combinable URL requests to Google Fonts
// OR the loading type is different from render-blocking
if ( Main::instance()->settings['google_fonts_combine_type'] || count( $finalCombinableLinks ) > 1 ) {
$htmlSource = self::combineGoogleFontLinks( $finalCombinableLinks, $htmlSource );
}
} elseif (Main::instance()->settings['google_fonts_display']) {
/*
* "Combine Google Fonts" IS NOT enabled
* Go through the links and apply any "font-display"
*/
foreach ( $matchesFromLinkTags as $linkTagArray ) {
$linkTag = trim( trim( $linkTagArray[0], '"\'' ) );
// Extra checks to make sure it's a valid LINK tag
if ( ( strpos( $linkTag, "'" ) !== false && ( substr_count( $linkTag, "'" ) % 2 ) )
|| ( strpos( $linkTag, '"' ) !== false && ( substr_count( $linkTag, '"' ) % 2 ) )
|| ( trim( strip_tags( $linkTag ) ) !== '' ) ) {
continue;
}
// Check if the CSS has any 'data-wpacu-skip' attribute; if it does, do not continue and leave it as it is (non-altered)
if ( Misc::hasExactDataAttr($linkTag, 'data-wpacu-skip') ) {
continue;
}
$linkHrefOriginal = Misc::getValueFromTag($linkTag);
// [START] Remove invalid requests with no font family
$urlParse = parse_url( str_replace( array('&', '&'), '&', $linkHrefOriginal ), PHP_URL_QUERY );
parse_str( $urlParse, $qStr );
if ( isset( $qStr['family'] ) && ! $qStr['family'] ) {
$htmlSource = str_replace( $linkTag, '', $htmlSource );
continue;
}
// [END] Remove invalid requests with no font family
// If anything is set apart from '[none set]', proceed
$newLinkHref = self::alterGoogleFontLink( $linkHrefOriginal );
if ( $newLinkHref !== $linkHrefOriginal ) {
$finalLinkTag = str_replace( $linkHrefOriginal, $newLinkHref, $linkTag );
// Finally, alter the HTML source
$htmlSource = str_replace( $linkTag, $finalLinkTag, $htmlSource );
}
}
}
}
}
// "font-display: swap;" if enabled
$htmlSource = self::alterGoogleFontUrlFromInlineStyleTags($htmlSource);
// Clear any traces
return str_replace(self::NOSCRIPT_WEB_FONT_LOADER, '', $htmlSource);
}
/**
* @param string $linkHrefOriginal
* @param bool $escHtml
* @param string $alterFor
*
* @return string
*/
public static function alterGoogleFontLink($linkHrefOriginal, $escHtml = true, $alterFor = 'css')
{
$isInVar = false; // The link is inside a variable with a JSON format
// Some special filtering here as some hosting environments (at least staging) behave funny with // inside SCRIPT tags
if ($alterFor === 'js') {
$containsStrNoSlashes = str_replace('/', '', self::$containsStr);
$conditionOne = stripos($linkHrefOriginal, $containsStrNoSlashes) === false;
if (strpos($linkHrefOriginal, '\/') !== false) {
$isInVar = true;
}
} else { // css (default)
$conditionOne = stripos($linkHrefOriginal, self::$containsStr) === false;
}
// Do not continue if it doesn't contain the right string, or it contains 'display=' or it does not contain 'family=' or there is no value set for "font-display"
if ($conditionOne ||
stripos($linkHrefOriginal, 'display=') !== false ||
stripos($linkHrefOriginal, 'family=') === false ||
! Main::instance()->settings['google_fonts_display']) {
// Return original source
return $linkHrefOriginal;
}
$altLinkHref = str_replace('&', '&', $linkHrefOriginal);
if ($isInVar) {
$altLinkHref = str_replace('\/', '/', $altLinkHref);
}
$urlQuery = parse_url($altLinkHref, PHP_URL_QUERY);
parse_str($urlQuery, $outputStr);
// Is there no "display" or there is, but it has an empty value? Append the one we have in the "Settings" - "Google Fonts"
if ( ! isset($outputStr['display']) || (isset($outputStr['display']) && $outputStr['display'] === '') ) {
$outputStr['display'] = Main::instance()->settings['google_fonts_display'];
list($linkHrefFirstPart) = explode('?', $linkHrefOriginal);
// Returned the updated source with the 'display' parameter appended to it
$afterQuestionMark = http_build_query($outputStr);
if ($escHtml) {
$afterQuestionMark = esc_attr($afterQuestionMark);
}
return $linkHrefFirstPart . '?' . $afterQuestionMark;
}
// Return original source
return $linkHrefOriginal;
}
/**
* @param $htmlSource
*
* @return mixed
*/
public static function alterGoogleFontUrlFromInlineStyleTags($htmlSource)
{
if (! preg_match('/@import(\s+)url\(/i', $htmlSource)) {
return $htmlSource;
}
preg_match_all('#<\s*?style\b[^>]*>(.*?)</style\b[^>]*>#s', $htmlSource, $styleMatches, PREG_SET_ORDER);
if (empty($styleMatches)) {
return $htmlSource;
}
// Go through each STYLE tag
foreach ($styleMatches as $styleInlineArray) {
list($styleInlineTag, $styleInlineContent) = $styleInlineArray;
// Check if the STYLE tag has any 'data-wpacu-skip' attribute; if it does, do not continue
if (Misc::hasExactDataAttr($styleInlineTag, 'data-wpacu-skip')) {
continue;
}
// Is the content relevant?
if (! preg_match('/@import(\s+|)(url|\(|\'|")/i', $styleInlineContent)
|| stripos($styleInlineContent, 'fonts.googleapis.com') === false) {
continue;
}
// Do any alteration to the URL of the Google Font
$newCssOutput = self::alterGoogleFontUrlFromCssContent($styleInlineTag);
$htmlSource = str_replace($styleInlineTag, $newCssOutput, $htmlSource);
}
return $htmlSource;
}
/**
* @param $cssContent
*
* @return mixed
*/
public static function alterGoogleFontUrlFromCssContent($cssContent)
{
if (stripos($cssContent, 'fonts.googleapis.com') === false || ! Main::instance()->settings['google_fonts_display']) {
return $cssContent;
}
$regExps = array('/@import(\s+)url\((.*?)\)(|\s+)\;/i', '/@import(\s+|)(\(|\'|")(.*?)(\'|"|\))\;/i');
$newCssOutput = $cssContent;
foreach ($regExps as $regExpIndex => $regExpPattern) {
preg_match_all($regExpPattern, $cssContent, $matchesFromInlineCode, PREG_SET_ORDER);
if (! empty($matchesFromInlineCode)) {
foreach ($matchesFromInlineCode as $matchesFromInlineCodeArray) {
$cssImportRule = $matchesFromInlineCodeArray[0];
if ($regExpIndex === 0) {
$googleApisUrl = trim($matchesFromInlineCodeArray[2], '"\' ');
} else {
$googleApisUrl = trim($matchesFromInlineCodeArray[3], '"\' ');
}
// It has to be a Google Fonts API link
if (stripos($googleApisUrl, 'fonts.googleapis.com') === false) {
continue;
}
$newGoogleApisUrl = self::alterGoogleFontLink($googleApisUrl, false);
if ($newGoogleApisUrl !== $googleApisUrl) {
$newCssImportRule = str_replace($googleApisUrl, $newGoogleApisUrl, $cssImportRule);
$newCssOutput = str_replace($cssImportRule, $newCssImportRule, $newCssOutput);
}
}
}
}
return $newCssOutput;
}
/**
* @param $jsContent
*
* @return mixed
*/
public static function alterGoogleFontUrlFromJsContent($jsContent)
{
$newJsOutput = $jsContent;
if (stripos($jsContent, 'fonts.googleapis.com') !== false) {
preg_match_all('#fonts.googleapis.com(.*?)(["\'])#si', $jsContent, $matchesFromJsCode);
if (isset($matchesFromJsCode[0]) && ! empty($matchesFromJsCode)) {
foreach ($matchesFromJsCode[0] as $match) {
$matchRule = $match;
$googleApisUrl = trim($match, '"\' ');
$newGoogleApisUrl = self::alterGoogleFontLink($googleApisUrl, false, 'js');
if ($newGoogleApisUrl !== $googleApisUrl) {
$newJsMatchOutput = str_replace($googleApisUrl, $newGoogleApisUrl, $matchRule);
$newJsOutput = str_replace($matchRule, $newJsMatchOutput, $newJsOutput);
}
}
}
}
foreach (array('WebFontConfig', 'WebFont') as $webFontStr) {
if (stripos($jsContent, $webFontStr) !== false) {
// Case 1:
// Look for any "WebFontConfig = { google: { families: ['font-one', 'font-two'] } }" patterns
// and for any "WebFont = { google: { families: ['font-one', 'font-two'] } }" patterns
preg_match_all(
'#'.$webFontStr.'(.*?)google(\s+|):(\s+|){(\s+|)families(\s+|):(?<families>.*?)]#s',
$jsContent,
$webFontConfigMatches
);
if ( ! empty($webFontConfigMatches['families']) ) {
foreach ($webFontConfigMatches['families'] as $webFontConfigKey => $webFontConfigMatch) {
$originalWholeMatch = $webFontConfigMatches[0][$webFontConfigKey];
$familiesMatchOutput = trim($webFontConfigMatch);
// NO match or existing "display" parameter was found? Do not continue
if ( ! $familiesMatchOutput || strpos($familiesMatchOutput, 'display=') ) {
continue;
}
// Alter the matched string
$familiesNewOutput = preg_replace(
'/([\'"])$/',
'&display=' . Main::instance()->settings['google_fonts_display'] . '\\1',
$familiesMatchOutput
);
$newWebFontConfigOutput = str_replace($familiesMatchOutput, $familiesNewOutput, $originalWholeMatch);
// Finally, do the replacement
$newJsOutput = str_replace($originalWholeMatch, $newWebFontConfigOutput, $newJsOutput);
}
}
// Case 2
// Look for any "WebFontConfig['google'] = {families: ['font-one', 'font-two']};" / "WebFontConfig.google = {families: ['font-one', 'font-two']};"
// and for any "WebFont['google'] = {families: ['font-one', 'font-two']};" / "WebFont.google = {families: ['font-one', 'font-two']};"
preg_match_all(
'#'.$webFontStr.'(.*?)google(.*?)=(.*?)families(\s+|):(?<families>.*?)]#si',
$jsContent,
$webFontConfigMatchesTwo
);
if ( ! empty($webFontConfigMatchesTwo['families']) ) {
foreach ($webFontConfigMatchesTwo['families'] as $webFontConfigKey => $webFontConfigMatch) {
$originalWholeMatch = $webFontConfigMatchesTwo[0][$webFontConfigKey];
$familiesMatchOutput = trim($webFontConfigMatch);
// NO match or existing "display" parameter was found? Do not continue
if ( ! $familiesMatchOutput || strpos($familiesMatchOutput, 'display=')) {
continue;
}
// Alter the matched string
$familiesNewOutput = preg_replace(
'/([\'"])$/',
'&display=' . Main::instance()->settings['google_fonts_display'] . '\\1',
$familiesMatchOutput
);
$newWebFontConfigOutput = str_replace($familiesMatchOutput, $familiesNewOutput, $originalWholeMatch);
// Finally, do the replacement
$newJsOutput = str_replace($originalWholeMatch, $newWebFontConfigOutput, $newJsOutput);
}
}
}
}
return $newJsOutput;
}
/**
* @param $finalLinks
* @param $htmlSource
*
* @return false|mixed|string|void
*/
public static function combineGoogleFontLinks($finalLinks, $htmlSource)
{
$fontsArray = array();
foreach ($finalLinks as $finalLinkIndex => $finalLinkData) {
$finalLinkHref = $finalLinkData['href'];
// Make sure all have the same common delimiters
// They will be restored later on for "W3 Validator Compatibility"
$finalLinkHref = str_replace(array('&', '%7C'), array('&', '|'), $finalLinkHref);
$queries = parse_url($finalLinkHref, PHP_URL_QUERY);
parse_str($queries, $fontQueries);
if (! array_key_exists('family', $fontQueries) || array_key_exists('text', $fontQueries)) {
continue;
}
// Strip the existing tag, leave a mark where the final combined LINK will be placed
$stripTagWith = ($finalLinkIndex === 0) ? self::COMBINED_LINK_DEL : '';
$finalLinkTag = $finalLinkData['tag'];
$htmlSource = str_ireplace(array($finalLinkTag."\n", $finalLinkTag), $stripTagWith, $htmlSource);
$family = trim($fontQueries['family']);
$family = trim($family, '|');
if (! $family) {
continue;
}
if (strpos($family, '|') !== false) {
// More than one family per request?
foreach (explode('|', $family) as $familyOne) {
if (strpos($familyOne, ':') !== false) {
// They have types
list ($familyRaw, $familyTypes) = explode(':', $familyOne);
$fontsArray['families'][$familyRaw]['types'] = self::buildSortTypesList($familyTypes);
} else {
// They do not have types
$familyRaw = $familyOne;
$fontsArray['families'][$familyRaw]['types'] = false;
}
}
} elseif (strpos($family, ':') !== false) {
list ($familyRaw, $familyTypes) = explode(':', $family);
$fontsArray['families'][$familyRaw]['types'] = self::buildSortTypesList($familyTypes);
} else {
$familyRaw = $family;
$fontsArray['families'][$familyRaw]['types'] = false;
}
if (array_key_exists('subset', $fontQueries)) {
// More than one subset per request?
if (strpos($fontQueries['subset'], ',') !== false) {
$multipleSubsets = explode(',', trim($fontQueries['subset'], ','));
foreach ($multipleSubsets as $subset) {
$fontsArray['subsets'][] = trim($subset);
}
} else {
// Only one subset
$fontsArray['subsets'][] = $fontQueries['subset'];
}
}
if (array_key_exists('effect', $fontQueries)) {
// More than one subset per request?
if (strpos($fontQueries['effect'], '|') !== false) {
$multipleSubsets = explode('|', trim($fontQueries['effect'], '|'));
foreach ($multipleSubsets as $subset) {
$fontsArray['effect'][] = trim($subset);
}
} else {
// Only one subset
$fontsArray['effect'][] = $fontQueries['effect'];
}
}
}
if ( ! empty($fontsArray) ) {
$finalCombinedParameters = '';
ksort($fontsArray['families']);
// Families
foreach ($fontsArray['families'] as $familyRaw => $fontValues) {
$finalCombinedParameters .= str_replace(' ', '+', $familyRaw);
// Any types? e.g. 400, 400italic, bold, etc.
if (isset($fontValues['types']) && $fontValues['types'] !== false) {
$finalCombinedParameters .= ':' . $fontValues['types'];
}
$finalCombinedParameters .= '|';
}
$finalCombinedParameters = trim($finalCombinedParameters, '|');
// Subsets
if ( ! empty($fontsArray['subsets']) ) {
sort($fontsArray['subsets']);
$finalCombinedParameters .= '&subset=' . implode(',', array_unique($fontsArray['subsets']));
}
// Effect(s)
if ( ! empty($fontsArray['effect']) ) {
sort($fontsArray['effect']);
$finalCombinedParameters .= '&effect=' . implode('|', array_unique($fontsArray['effect']));
}
if ($fontDisplay = Main::instance()->settings['google_fonts_display']) {
$finalCombinedParameters .= '&display=' . $fontDisplay;
}
// For "W3 Validator"
$finalCombinedParameters = str_replace('|', '%7C', $finalCombinedParameters);
$finalCombinedParameters = esc_attr($finalCombinedParameters);
// This is needed for both render-blocking and async (within NOSCRIPT tag as a fallback)
$finalCombinedLink = <<<LINK
<link rel='stylesheet' id='wpacu-combined-google-fonts-css' href='https://fonts.googleapis.com/css?family={$finalCombinedParameters}' type='text/css' media='all' />
LINK;
/*
* Loading Type: Render-Blocking (Default)
*/
if ( ! Main::instance()->settings['google_fonts_combine_type'] ) {
$finalCombinedLink .= "\n";
$htmlSource = str_replace(self::COMBINED_LINK_DEL, apply_filters('wpacu_combined_google_fonts_link_tag', $finalCombinedLink), $htmlSource);
}
/*
* Loading Type: Asynchronous via LINK preload with fallback
*/
if (Main::instance()->settings['google_fonts_combine_type'] === 'async_preload') {
$finalPreloadCombinedLink = <<<LINK
<link rel='preload' as="style" onload="this.onload=null;this.rel='stylesheet'" data-wpacu-preload-it-async='1' id='wpacu-combined-google-fonts-css-async-preload' href='https://fonts.googleapis.com/css?family={$finalCombinedParameters}' type='text/css' media='all' />
LINK;
$finalPreloadCombinedLink .= "\n".Misc::preloadAsyncCssFallbackOutput();
$htmlSource = str_replace(self::COMBINED_LINK_DEL, apply_filters('wpacu_combined_google_fonts_async_preload_link_tag', $finalPreloadCombinedLink), $htmlSource);
}
/*
* Loading Type: Asynchronous via Web Font Loader (webfont.js) with fallback
*/
if (Main::instance()->settings['google_fonts_combine_type'] === 'async') { // Async via Web Font Loader
$subSetsStr = '';
if ( ! empty($fontsArray['subsets']) ) {
sort($fontsArray['subsets']);
$subSetsStr = implode(',', array_unique($fontsArray['subsets']));
}
$wfConfigGoogleFamilies = array();
// Families
$iCount = 0;
foreach ($fontsArray['families'] as $familyRaw => $fontValues) {
$wfConfigGoogleFamily = str_replace(' ', '+', $familyRaw);
// Any types? e.g. 400, 400italic, bold, etc.
$hasTypes = false;
if (isset($fontValues['types']) && $fontValues['types']) {
$wfConfigGoogleFamily .= ':'.$fontValues['types'];
$hasTypes = true;
}
if ($subSetsStr) {
// If there are types, continue to use the comma delimiter
$wfConfigGoogleFamily .= ($hasTypes ? ',' : ':') . $subSetsStr;
}
// Append extra parameters to the last family from the list
if ($iCount === count($fontsArray['families']) - 1) {
// Effect(s)
if ( ! empty($fontsArray['effect']) ) {
sort($fontsArray['effect']);
$wfConfigGoogleFamily .= '&effect=' . implode('%7C', array_unique($fontsArray['effect']));
}
if ($fontDisplay = Main::instance()->settings['google_fonts_display']) {
$wfConfigGoogleFamily .= '&display=' . $fontDisplay;
}
}
$wfConfigGoogleFamilies[] = "'".$wfConfigGoogleFamily."'";
$iCount++;
}
$wfConfigGoogleFamiliesStr = '['.implode(',', $wfConfigGoogleFamilies).']';
$scriptType = Misc::getScriptTypeAttribute();
$finalInlineTagWebFontConfig = '<script id=\'wpacu-google-fonts-async-load\' '.$scriptType.'>'."\n".'WebFontConfig={google:{families:'.$wfConfigGoogleFamiliesStr.'}};(function(wpacuD){var wpacuWf=wpacuD.createElement(\'script\'),wpacuS=wpacuD.scripts[0];wpacuWf.src=(\'https:\'===document.location.protocol?\'https\':\'http\')+\'://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js\';wpacuWf.async=!0;wpacuS.parentNode.insertBefore(wpacuWf,wpacuS)})(document);'."\n".'</script>';
$htmlSource = str_replace(
array(
self::COMBINED_LINK_DEL,
self::NOSCRIPT_WEB_FONT_LOADER
),
array(
apply_filters( 'wpacu_combined_google_fonts_inline_script_tag', $finalInlineTagWebFontConfig ),
'<noscript>' . apply_filters( 'wpacu_combined_google_fonts_link_tag', $finalCombinedLink ) . '</noscript>' . "\n"
),
$htmlSource
);
}
}
return $htmlSource;
}
/**
* e.g. 300, 400, 400italic, bold, etc.
*
* @param $types
*
* @return string
*/
public static function buildSortTypesList($types)
{
$newTypes = array();
// More than one type per family?
if (strpos($types, ',') !== false) {
$multipleTypes = explode(',', trim($types, ','));
foreach ($multipleTypes as $type) {
if (trim($type)) {
$newTypes[] = trim($type);
}
}
} else {
// Only one type per family
$newTypes[] = $types;
}
$newTypes = array_unique($newTypes);
$newTypes = array_map(function($type) {
return ($type === 'bold') ? '700' : $type;
}, $newTypes);
sort($newTypes);
return implode(',', $newTypes);
}
/**
* @return bool
*/
public static function preventAnyChange()
{
return wpacuIsDefinedConstant( 'WPACU_ALLOW_ONLY_UNLOAD_RULES' );
}
}