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<?php
/**
* Font Collection class.
*
* This file contains the Font Collection class definition.
*
* @package WordPress
* @subpackage Fonts
* @since 6.5.0
*/
/**
* Font Collection class.
*
* @since 6.5.0
*
* @see wp_register_font_collection()
*/
final class WP_Font_Collection {
/**
* The unique slug for the font collection.
*
* @since 6.5.0
* @var string
*/
public $slug;
/**
* Font collection data.
*
* @since 6.5.0
* @var array|WP_Error|null
*/
private $data;
/**
* Font collection JSON file path or URL.
*
* @since 6.5.0
* @var string|null
*/
private $src;
/**
* WP_Font_Collection constructor.
*
* @since 6.5.0
*
* @param string $slug Font collection slug. May only contain alphanumeric characters, dashes,
* and underscores. See sanitize_title().
* @param array $args Font collection data. See wp_register_font_collection() for information on accepted arguments.
*/
public function __construct( string $slug, array $args ) {
$this->slug = sanitize_title( $slug );
if ( $this->slug !== $slug ) {
_doing_it_wrong(
__METHOD__,
/* translators: %s: Font collection slug. */
sprintf( __( 'Font collection slug "%s" is not valid. Slugs must use only alphanumeric characters, dashes, and underscores.' ), $slug ),
'6.5.0'
);
}
$required_properties = array( 'name', 'font_families' );
if ( isset( $args['font_families'] ) && is_string( $args['font_families'] ) ) {
// JSON data is lazy loaded by ::get_data().
$this->src = $args['font_families'];
unset( $args['font_families'] );
$required_properties = array( 'name' );
}
$this->data = $this->sanitize_and_validate_data( $args, $required_properties );
}
/**
* Retrieves the font collection data.
*
* @since 6.5.0
*
* @return array|WP_Error An array containing the font collection data, or a WP_Error on failure.
*/
public function get_data() {
if ( is_wp_error( $this->data ) ) {
return $this->data;
}
// If the collection uses JSON data, load it and cache the data/error.
if ( isset( $this->src ) ) {
$this->data = $this->load_from_json( $this->src );
}
if ( is_wp_error( $this->data ) ) {
return $this->data;
}
// Set defaults for optional properties.
$defaults = array(
'description' => '',
'categories' => array(),
);
return wp_parse_args( $this->data, $defaults );
}
/**
* Loads font collection data from a JSON file or URL.
*
* @since 6.5.0
*
* @param string $file_or_url File path or URL to a JSON file containing the font collection data.
* @return array|WP_Error An array containing the font collection data on success,
* else an instance of WP_Error on failure.
*/
private function load_from_json( $file_or_url ) {
$url = wp_http_validate_url( $file_or_url );
$file = file_exists( $file_or_url ) ? wp_normalize_path( realpath( $file_or_url ) ) : false;
if ( ! $url && ! $file ) {
// translators: %s: File path or URL to font collection JSON file.
$message = __( 'Font collection JSON file is invalid or does not exist.' );
_doing_it_wrong( __METHOD__, $message, '6.5.0' );
return new WP_Error( 'font_collection_json_missing', $message );
}
$data = $url ? $this->load_from_url( $url ) : $this->load_from_file( $file );
if ( is_wp_error( $data ) ) {
return $data;
}
$data = array(
'name' => $this->data['name'],
'font_families' => $data['font_families'],
);
if ( isset( $this->data['description'] ) ) {
$data['description'] = $this->data['description'];
}
if ( isset( $this->data['categories'] ) ) {
$data['categories'] = $this->data['categories'];
}
return $data;
}
/**
* Loads the font collection data from a JSON file path.
*
* @since 6.5.0
*
* @param string $file File path to a JSON file containing the font collection data.
* @return array|WP_Error An array containing the font collection data on success,
* else an instance of WP_Error on failure.
*/
private function load_from_file( $file ) {
$data = wp_json_file_decode( $file, array( 'associative' => true ) );
if ( empty( $data ) ) {
return new WP_Error( 'font_collection_decode_error', __( 'Error decoding the font collection JSON file contents.' ) );
}
return $this->sanitize_and_validate_data( $data, array( 'font_families' ) );
}
/**
* Loads the font collection data from a JSON file URL.
*
* @since 6.5.0
*
* @param string $url URL to a JSON file containing the font collection data.
* @return array|WP_Error An array containing the font collection data on success,
* else an instance of WP_Error on failure.
*/
private function load_from_url( $url ) {
// Limit key to 167 characters to avoid failure in the case of a long URL.
$transient_key = substr( 'wp_font_collection_url_' . $url, 0, 167 );
$data = get_site_transient( $transient_key );
if ( false === $data ) {
$response = wp_safe_remote_get( $url );
if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
return new WP_Error(
'font_collection_request_error',
sprintf(
// translators: %s: Font collection URL.
__( 'Error fetching the font collection data from "%s".' ),
$url
)
);
}
$data = json_decode( wp_remote_retrieve_body( $response ), true );
if ( empty( $data ) ) {
return new WP_Error( 'font_collection_decode_error', __( 'Error decoding the font collection data from the HTTP response JSON.' ) );
}
// Make sure the data is valid before storing it in a transient.
$data = $this->sanitize_and_validate_data( $data, array( 'font_families' ) );
if ( is_wp_error( $data ) ) {
return $data;
}
set_site_transient( $transient_key, $data, DAY_IN_SECONDS );
}
return $data;
}
/**
* Sanitizes and validates the font collection data.
*
* @since 6.5.0
*
* @param array $data Font collection data to sanitize and validate.
* @param array $required_properties Required properties that must exist in the passed data.
* @return array|WP_Error Sanitized data if valid, otherwise a WP_Error instance.
*/
private function sanitize_and_validate_data( $data, $required_properties = array() ) {
$schema = self::get_sanitization_schema();
$data = WP_Font_Utils::sanitize_from_schema( $data, $schema );
foreach ( $required_properties as $property ) {
if ( empty( $data[ $property ] ) ) {
$message = sprintf(
// translators: 1: Font collection slug, 2: Missing property name, e.g. "font_families".
__( 'Font collection "%1$s" has missing or empty property: "%2$s".' ),
$this->slug,
$property
);
_doing_it_wrong( __METHOD__, $message, '6.5.0' );
return new WP_Error( 'font_collection_missing_property', $message );
}
}
return $data;
}
/**
* Retrieves the font collection sanitization schema.
*
* @since 6.5.0
*
* @return array Font collection sanitization schema.
*/
private static function get_sanitization_schema() {
return array(
'name' => 'sanitize_text_field',
'description' => 'sanitize_text_field',
'font_families' => array(
array(
'font_family_settings' => array(
'name' => 'sanitize_text_field',
'slug' => static function ( $value ) {
return _wp_to_kebab_case( sanitize_title( $value ) );
},
'fontFamily' => 'WP_Font_Utils::sanitize_font_family',
'preview' => 'sanitize_url',
'fontFace' => array(
array(
'fontFamily' => 'sanitize_text_field',
'fontStyle' => 'sanitize_text_field',
'fontWeight' => 'sanitize_text_field',
'src' => static function ( $value ) {
return is_array( $value )
? array_map( 'sanitize_text_field', $value )
: sanitize_text_field( $value );
},
'preview' => 'sanitize_url',
'fontDisplay' => 'sanitize_text_field',
'fontStretch' => 'sanitize_text_field',
'ascentOverride' => 'sanitize_text_field',
'descentOverride' => 'sanitize_text_field',
'fontVariant' => 'sanitize_text_field',
'fontFeatureSettings' => 'sanitize_text_field',
'fontVariationSettings' => 'sanitize_text_field',
'lineGapOverride' => 'sanitize_text_field',
'sizeAdjust' => 'sanitize_text_field',
'unicodeRange' => 'sanitize_text_field',
),
),
),
'categories' => array( 'sanitize_title' ),
),
),
'categories' => array(
array(
'name' => 'sanitize_text_field',
'slug' => 'sanitize_title',
),
),
);
}
}
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