239 lines
7.8 KiB
PHP
239 lines
7.8 KiB
PHP
<?php
|
|
/**
|
|
* Font Utils class.
|
|
*
|
|
* Provides utility functions for working with font families.
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Fonts
|
|
* @since 6.5.0
|
|
*/
|
|
|
|
/**
|
|
* A class of utilities for working with the Font Library.
|
|
*
|
|
* These utilities may change or be removed in the future and are intended for internal use only.
|
|
*
|
|
* @since 6.5.0
|
|
* @access private
|
|
*/
|
|
class WP_Font_Utils {
|
|
/**
|
|
* Sanitizes and formats font family names.
|
|
*
|
|
* - Applies `sanitize_text_field`
|
|
* - Adds surrounding quotes to names that contain spaces and are not already quoted
|
|
*
|
|
* @since 6.5.0
|
|
* @access private
|
|
*
|
|
* @see sanitize_text_field()
|
|
*
|
|
* @param string $font_family Font family name(s), comma-separated.
|
|
* @return string Sanitized and formatted font family name(s).
|
|
*/
|
|
public static function sanitize_font_family( $font_family ) {
|
|
if ( ! $font_family ) {
|
|
return '';
|
|
}
|
|
|
|
$font_family = sanitize_text_field( $font_family );
|
|
$font_families = explode( ',', $font_family );
|
|
$wrapped_font_families = array_map(
|
|
function ( $family ) {
|
|
$trimmed = trim( $family );
|
|
if ( ! empty( $trimmed ) && str_contains( $trimmed, ' ' ) && ! str_contains( $trimmed, "'" ) && ! str_contains( $trimmed, '"' ) ) {
|
|
return '"' . $trimmed . '"';
|
|
}
|
|
return $trimmed;
|
|
},
|
|
$font_families
|
|
);
|
|
|
|
if ( count( $wrapped_font_families ) === 1 ) {
|
|
$font_family = $wrapped_font_families[0];
|
|
} else {
|
|
$font_family = implode( ', ', $wrapped_font_families );
|
|
}
|
|
|
|
return $font_family;
|
|
}
|
|
|
|
/**
|
|
* Generates a slug from font face properties, e.g. `open sans;normal;400;100%;U+0-10FFFF`
|
|
*
|
|
* Used for comparison with other font faces in the same family, to prevent duplicates
|
|
* that would both match according the CSS font matching spec. Uses only simple case-insensitive
|
|
* matching for fontFamily and unicodeRange, so does not handle overlapping font-family lists or
|
|
* unicode ranges.
|
|
*
|
|
* @since 6.5.0
|
|
* @access private
|
|
*
|
|
* @link https://drafts.csswg.org/css-fonts/#font-style-matching
|
|
*
|
|
* @param array $settings {
|
|
* Font face settings.
|
|
*
|
|
* @type string $fontFamily Font family name.
|
|
* @type string $fontStyle Optional font style, defaults to 'normal'.
|
|
* @type string $fontWeight Optional font weight, defaults to 400.
|
|
* @type string $fontStretch Optional font stretch, defaults to '100%'.
|
|
* @type string $unicodeRange Optional unicode range, defaults to 'U+0-10FFFF'.
|
|
* }
|
|
* @return string Font face slug.
|
|
*/
|
|
public static function get_font_face_slug( $settings ) {
|
|
$defaults = array(
|
|
'fontFamily' => '',
|
|
'fontStyle' => 'normal',
|
|
'fontWeight' => '400',
|
|
'fontStretch' => '100%',
|
|
'unicodeRange' => 'U+0-10FFFF',
|
|
);
|
|
$settings = wp_parse_args( $settings, $defaults );
|
|
|
|
$font_family = mb_strtolower( $settings['fontFamily'] );
|
|
$font_style = strtolower( $settings['fontStyle'] );
|
|
$font_weight = strtolower( $settings['fontWeight'] );
|
|
$font_stretch = strtolower( $settings['fontStretch'] );
|
|
$unicode_range = strtoupper( $settings['unicodeRange'] );
|
|
|
|
// Convert weight keywords to numeric strings.
|
|
$font_weight = str_replace( array( 'normal', 'bold' ), array( '400', '700' ), $font_weight );
|
|
|
|
// Convert stretch keywords to numeric strings.
|
|
$font_stretch_map = array(
|
|
'ultra-condensed' => '50%',
|
|
'extra-condensed' => '62.5%',
|
|
'condensed' => '75%',
|
|
'semi-condensed' => '87.5%',
|
|
'normal' => '100%',
|
|
'semi-expanded' => '112.5%',
|
|
'expanded' => '125%',
|
|
'extra-expanded' => '150%',
|
|
'ultra-expanded' => '200%',
|
|
);
|
|
$font_stretch = str_replace( array_keys( $font_stretch_map ), array_values( $font_stretch_map ), $font_stretch );
|
|
|
|
$slug_elements = array( $font_family, $font_style, $font_weight, $font_stretch, $unicode_range );
|
|
|
|
$slug_elements = array_map(
|
|
function ( $elem ) {
|
|
// Remove quotes to normalize font-family names, and ';' to use as a separator.
|
|
$elem = trim( str_replace( array( '"', "'", ';' ), '', $elem ) );
|
|
|
|
// Normalize comma separated lists by removing whitespace in between items,
|
|
// but keep whitespace within items (e.g. "Open Sans" and "OpenSans" are different fonts).
|
|
// CSS spec for whitespace includes: U+000A LINE FEED, U+0009 CHARACTER TABULATION, or U+0020 SPACE,
|
|
// which by default are all matched by \s in PHP.
|
|
return preg_replace( '/,\s+/', ',', $elem );
|
|
},
|
|
$slug_elements
|
|
);
|
|
|
|
return sanitize_text_field( implode( ';', $slug_elements ) );
|
|
}
|
|
|
|
/**
|
|
* Sanitizes a tree of data using a schema.
|
|
*
|
|
* The schema structure should mirror the data tree. Each value provided in the
|
|
* schema should be a callable that will be applied to sanitize the corresponding
|
|
* value in the data tree. Keys that are in the data tree, but not present in the
|
|
* schema, will be removed in the sanitized data. Nested arrays are traversed recursively.
|
|
*
|
|
* @since 6.5.0
|
|
*
|
|
* @access private
|
|
*
|
|
* @param array $tree The data to sanitize.
|
|
* @param array $schema The schema used for sanitization.
|
|
* @return array The sanitized data.
|
|
*/
|
|
public static function sanitize_from_schema( $tree, $schema ) {
|
|
if ( ! is_array( $tree ) || ! is_array( $schema ) ) {
|
|
return array();
|
|
}
|
|
|
|
foreach ( $tree as $key => $value ) {
|
|
// Remove keys not in the schema or with null/empty values.
|
|
if ( ! array_key_exists( $key, $schema ) ) {
|
|
unset( $tree[ $key ] );
|
|
continue;
|
|
}
|
|
|
|
$is_value_array = is_array( $value );
|
|
$is_schema_array = is_array( $schema[ $key ] ) && ! is_callable( $schema[ $key ] );
|
|
|
|
if ( $is_value_array && $is_schema_array ) {
|
|
if ( wp_is_numeric_array( $value ) ) {
|
|
// If indexed, process each item in the array.
|
|
foreach ( $value as $item_key => $item_value ) {
|
|
$tree[ $key ][ $item_key ] = isset( $schema[ $key ][0] ) && is_array( $schema[ $key ][0] )
|
|
? self::sanitize_from_schema( $item_value, $schema[ $key ][0] )
|
|
: self::apply_sanitizer( $item_value, $schema[ $key ][0] );
|
|
}
|
|
} else {
|
|
// If it is an associative or indexed array, process as a single object.
|
|
$tree[ $key ] = self::sanitize_from_schema( $value, $schema[ $key ] );
|
|
}
|
|
} elseif ( ! $is_value_array && $is_schema_array ) {
|
|
// If the value is not an array but the schema is, remove the key.
|
|
unset( $tree[ $key ] );
|
|
} elseif ( ! $is_schema_array ) {
|
|
// If the schema is not an array, apply the sanitizer to the value.
|
|
$tree[ $key ] = self::apply_sanitizer( $value, $schema[ $key ] );
|
|
}
|
|
|
|
// Remove keys with null/empty values.
|
|
if ( empty( $tree[ $key ] ) ) {
|
|
unset( $tree[ $key ] );
|
|
}
|
|
}
|
|
|
|
return $tree;
|
|
}
|
|
|
|
/**
|
|
* Applies a sanitizer function to a value.
|
|
*
|
|
* @since 6.5.0
|
|
*
|
|
* @param mixed $value The value to sanitize.
|
|
* @param mixed $sanitizer The sanitizer function to apply.
|
|
* @return mixed The sanitized value.
|
|
*/
|
|
private static function apply_sanitizer( $value, $sanitizer ) {
|
|
if ( null === $sanitizer ) {
|
|
return $value;
|
|
|
|
}
|
|
return call_user_func( $sanitizer, $value );
|
|
}
|
|
|
|
/**
|
|
* Returns the expected mime-type values for font files, depending on PHP version.
|
|
*
|
|
* This is needed because font mime types vary by PHP version, so checking the PHP version
|
|
* is necessary until a list of valid mime-types for each file extension can be provided to
|
|
* the 'upload_mimes' filter.
|
|
*
|
|
* @since 6.5.0
|
|
*
|
|
* @access private
|
|
*
|
|
* @return array A collection of mime types keyed by file extension.
|
|
*/
|
|
public static function get_allowed_font_mime_types() {
|
|
$php_7_ttf_mime_type = PHP_VERSION_ID >= 70300 ? 'application/font-sfnt' : 'application/x-font-ttf';
|
|
|
|
return array(
|
|
'otf' => 'application/vnd.ms-opentype',
|
|
'ttf' => PHP_VERSION_ID >= 70400 ? 'font/sfnt' : $php_7_ttf_mime_type,
|
|
'woff' => PHP_VERSION_ID >= 80100 ? 'font/woff' : 'application/font-woff',
|
|
'woff2' => PHP_VERSION_ID >= 80100 ? 'font/woff2' : 'application/font-woff2',
|
|
);
|
|
}
|
|
}
|