hide_comments( $html ); $fonts = $this->find( '])+)?(?:\s+href\s*=\s*([\'"])((?:https?:)?\/\/fonts\.googleapis\.com\/css(?:(?!\1).)+)\1)(?:\s+[^>]*)?>', $html_nocomments ); if ( ! $fonts ) { Logger::debug( 'No Google Fonts found.', [ 'GF combine process' ] ); return $html; } Logger::debug( 'Found ' . count( $fonts ) . ' Google Fonts.', [ 'GF combine process', 'tags' => $fonts, ] ); $this->parse( $fonts ); if ( empty( $this->fonts ) ) { Logger::debug( 'No Google Fonts left to combine.', [ 'GF combine process' ] ); return $html; } $html = str_replace( '', '' . $this->get_combine_tag(), $html ); foreach ( $fonts as $font ) { $html = str_replace( $font[0], '', $html ); } Logger::info( 'Google Fonts successfully combined.', [ 'GF combine process', 'url' => $this->fonts . $this->subsets, ] ); return $html; } /** * Finds links to Google fonts * * @since 3.1 * @author Remy Perona * * @param string $pattern Pattern to search for. * @param string $html HTML content. * @return bool|array */ protected function find( $pattern, $html ) { preg_match_all( '/' . $pattern . '/Umsi', $html, $matches, PREG_SET_ORDER ); if ( count( $matches ) <= 1 ) { return false; } return $matches; } /** * Parses found matches to extract fonts and subsets * * @since 3.1 * @author Remy Perona * * @param Array $matches Found matches for the pattern. * @return void */ protected function parse( $matches ) { foreach ( $matches as $match ) { $url = html_entity_decode( $match[2] ); $query = \rocket_extract_url_component( $url, PHP_URL_QUERY ); if ( ! isset( $query ) ) { return; } $font = wp_parse_args( $query ); // Add font to the collection. $this->fonts[] = rawurlencode( htmlentities( $font['family'] ) ); // Add subset to collection. if ( isset( $font['subset'] ) ) { $this->subsets[] = rawurlencode( htmlentities( $font['subset'] ) ); } } // Concatenate fonts tag. $this->subsets = ! empty( $this->subsets ) ? '&subset=' . implode( ',', array_filter( array_unique( $this->subsets ) ) ) : ''; $this->fonts = implode( '|', array_filter( array_unique( $this->fonts ) ) ); $this->fonts = str_replace( '|', '%7C', $this->fonts ); } /** * Returns the combined Google fonts link tag * * @since 3.3.5 Add support for the display parameter * @since 3.1 * @author Remy Perona * * @return string */ protected function get_combine_tag() { /** * Filters the combined Google Fonts display parameter value * * @since 3.3.5 * @author Remy Perona * * @param string $display Display value. Can be either auto, block, swap, fallback or optional. */ $display = apply_filters( 'rocket_combined_google_fonts_display', 'swap' ); $allowed_values = [ 'auto' => 1, 'block' => 1, 'swap' => 1, 'fallback' => 1, 'optional' => 1, ]; $display = isset( $allowed_values[ $display ] ) ? $display : 'swap'; return ''; } }