name : class-wp-font-face-resolver.php <?php /** * WP_Font_Face_Resolver class. * * @package WordPress * @subpackage Fonts * @since 6.4.0 */ /** * The Font Face Resolver abstracts the processing of different data sources * (such as theme.json) for processing within the Font Face. * * This class is for internal core usage and is not supposed to be used by * extenders (plugins and/or themes). * * @access private */ class WP_Font_Face_Resolver { /** * Gets fonts defined in theme.json. * * @since 6.4.0 * * @return array Returns the font-families, each with their font-face variations. */ public static function get_fonts_from_theme_json() { $settings = wp_get_global_settings(); // Bail out early if there are no font settings. if ( empty( $settings['typography']['fontFamilies'] ) ) { return array(); } return static::parse_settings( $settings ); } /** * Parse theme.json settings to extract font definitions with variations grouped by font-family. * * @since 6.4.0 * * @param array $settings Font settings to parse. * @return array Returns an array of fonts, grouped by font-family. */ private static function parse_settings( array $settings ) { $fonts = array(); foreach ( $settings['typography']['fontFamilies'] as $font_families ) { foreach ( $font_families as $definition ) { // Skip if "fontFace" is not defined, meaning there are no variations. if ( empty( $definition['fontFace'] ) ) { continue; } // Skip if "fontFamily" is not defined. if ( empty( $definition['fontFamily'] ) ) { continue; } $font_family_name = static::maybe_parse_name_from_comma_separated_list( $definition['fontFamily'] ); // Skip if no font family is defined. if ( empty( $font_family_name ) ) { continue; } $fonts[] = static::convert_font_face_properties( $definition['fontFace'], $font_family_name ); } } return $fonts; } /** * Parse font-family name from comma-separated lists. * * If the given `fontFamily` is a comma-separated lists (example: "Inter, sans-serif" ), * parse and return the fist font from the list. * * @since 6.4.0 * * @param string $font_family Font family `fontFamily' to parse. * @return string Font-family name. */ private static function maybe_parse_name_from_comma_separated_list( $font_family ) { if ( str_contains( $font_family, ',' ) ) { $font_family = explode( ',', $font_family )[0]; } return trim( $font_family, "\"'" ); } /** * Converts font-face properties from theme.json format. * * @since 6.4.0 * * @param array $font_face_definition The font-face definitions to convert. * @param string $font_family_property The value to store in the font-face font-family property. * @return array Converted font-face properties. */ private static function convert_font_face_properties( array $font_face_definition, $font_family_property ) { $converted_font_faces = array(); foreach ( $font_face_definition as $font_face ) { // Add the font-family property to the font-face. $font_face['font-family'] = $font_family_property; // Converts the "file:./" src placeholder into a theme font file URI. if ( ! empty( $font_face['src'] ) ) { $font_face['src'] = static::to_theme_file_uri( (array) $font_face['src'] ); } // Convert camelCase properties into kebab-case. $font_face = static::to_kebab_case( $font_face ); $converted_font_faces[] = $font_face; } return $converted_font_faces; } /** * Converts each 'file:./' placeholder into a URI to the font file in the theme. * * The 'file:./' is specified in the theme's `theme.json` as a placeholder to be * replaced with the URI to the font file's location in the theme. When a "src" * beings with this placeholder, it is replaced, converting the src into a URI. * * @since 6.4.0 * * @param array $src An array of font file sources to process. * @return array An array of font file src URI(s). */ private static function to_theme_file_uri( array $src ) { $placeholder = 'file:./'; foreach ( $src as $src_key => $src_url ) { // Skip if the src doesn't start with the placeholder, as there's nothing to replace. if ( ! str_starts_with( $src_url, $placeholder ) ) { continue; } $src_file = str_replace( $placeholder, '', $src_url ); $src[ $src_key ] = get_theme_file_uri( $src_file ); } return $src; } /** * Converts all first dimension keys into kebab-case. * * @since 6.4.0 * * @param array $data The array to process. * @return array Data with first dimension keys converted into kebab-case. */ private static function to_kebab_case( array $data ) { foreach ( $data as $key => $value ) { $kebab_case = _wp_to_kebab_case( $key ); $data[ $kebab_case ] = $value; if ( $kebab_case !== $key ) { unset( $data[ $key ] ); } } return $data; } }