**
* Replaces the Google Fonts URL with the local one.
*
* @param array $font Font data.
* @param string $html HTML content.
* @param string $font_provider Font provider.
*
* @return string
*/
private function replace_font( array $font, string $html, string $font_provider = 'google-fonts' ): string {
$hash = md5( $font['url'] );
if ( $this->filesystem->exists( $this->get_css_path( $hash, $font_provider ) ) ) {
$local = $this->get_optimized_markup( $hash, $font['url'], $font_provider );
return str_replace( $font[0], $local, $html );
}
if ( ! $this->filesystem->write_font_css( $font['url'], $font_provider ) ) {
$this->error = true;
return $html;
}
$local = $this->get_optimized_markup( $hash, $font['url'], $font_provider );
return str_replace( $font[0], $local, $html );
}
/**
* Returns the optimized markup for Google Fonts
*
* @since 3.18
*
* @param string $hash Font Url has.
* @param string $original_url Fonts Url.
* @param string $font_provider Fonts provider.
*
* @return string
*/
private function get_optimized_markup(
string $hash,
string $original_url,
string $font_provider
): string {
$font_provider_path = sprintf( '%s/', $font_provider );
$original_url = html_entity_decode( $original_url, ENT_QUOTES );
$gf_parameters = wp_parse_url( $original_url, PHP_URL_QUERY );
/**
* Filters to enable the inline css output.
*
* @since 3.18
*
* @param bool $enable Tells if we are enabling or not the inline css output.
*/
if ( wpm_apply_filters_typed( 'boolean', 'rocket_host_fonts_locally_inline_css', false ) ) {
$local_css_path = $this->get_css_path( $hash, $font_provider );
$inline_css = $this->get_font_inline_css( $local_css_path, $gf_parameters );
if ( ! empty( $inline_css ) ) {
return $inline_css;
}
}
// This filter is documented in inc/classes/optimization/css/class-abstract-css-optimization.php.
$url = wpm_apply_filters_typed( 'string', 'rocket_css_url', $this->base_url . $font_provider_path . 'css/' . $this->filesystem->hash_to_path( $hash ) . '.css' );
return sprintf(
'', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
$url,
$gf_parameters
);
}
/**
* Gets the CSS path for the font.
*
* @param string $hash Font hash.
* @param string $font_provider Font provider.
*
* @return string
*/
private function get_css_path( string $hash, string $font_provider ): string {
$font_provider_path = sprintf( '%s/', $font_provider );
return $this->base_path . $font_provider_path . 'css/' . $this->filesystem->hash_to_path( $hash ) . '.css';
}
/**
* Removes preconnect and prefetch links for Google Fonts from the HTML content.
*
* @param string $html HTML content.
*
* @return string Modified HTML content without preconnect and prefetch links.
*/
private function remove_preconnect_and_prefetch( string $html ) {
/**
* Filters the removal of Google preconnect/prefetch links.
*
* @since 3.18
*
* @param bool $enable_removal Enable or disable removal of Google preconnect/prefetch links.
*/
$remove_links = wpm_apply_filters_typed( 'boolean', 'rocket_remove_font_pre_links', true );
if ( ! $remove_links ) {
return $html;
}
$pattern = '/]*\b(rel\s*=\s*[\'"](?:preconnect|dns-prefetch)[\'"]|href\s*=\s*[\'"](?:https?:)?\/\/(?:fonts\.(?:googleapis|gstatic)\.com)[\'"])[^>]*\b(rel\s*=\s*[\'"](?:preconnect|dns-prefetch)[\'"]|href\s*=\s*[\'"](?:https?:)?\/\/(?:fonts\.(?:googleapis|gstatic)\.com)[\'"])[^>]*>/i';
$html = preg_replace( $pattern, '', $html );
return $html;
}
/**
* Disables the preload of Google Fonts.
*
* @param bool $disable Whether to disable the preload of Google Fonts.
*
* @return bool
*/
public function disable_google_fonts_preload( $disable ): bool {
if ( ! $this->optimization_context->is_allowed() ) {
return $disable;
}
return true;
}
/**
* Gets the font inline css.
*
* @param string $local_css_path CSS file path.
* @param string $gf_parameters Google Fonts parameters.
*
* @return string
*/
private function get_font_inline_css( string $local_css_path, string $gf_parameters ): string {
$content = $this->filesystem->get_file_content( $local_css_path );
if ( empty( $content ) ) {
return '';
}
return sprintf(
'',
$gf_parameters,
$content
);
}
}