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<?php |
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/** |
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* Handles downloading a font from the google-fonts API locally. |
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* Solves privacy concerns with Google's CDN |
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* and their sometimes less-than-transparent policies. |
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* |
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* @package Kirki |
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* @category Core |
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* @author Aristeides Stathopoulos |
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* @copyright Copyright (c) 2017, Aristeides Stathopoulos |
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* @license http://opensource.org/licenses/https://opensource.org/licenses/MIT |
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* @since 3.0.28 |
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*/ |
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// Do not allow directly accessing this file. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit( 'Direct script access denied.' ); |
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} |
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/** |
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* The Kirki_Fonts object. |
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* |
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* @since 3.0.28 |
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*/ |
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final class Kirki_Fonts_Google_Local { |
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/** |
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* The name of the font-family |
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* |
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* @access private |
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* @since 3.0.28 |
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* @var string |
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*/ |
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private $family; |
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/** |
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* The system path where font-files are stored. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @var string |
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*/ |
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private $folder_path; |
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/** |
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* The URL where files for this font can be found. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @var string |
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*/ |
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private $folder_url; |
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/** |
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* The font-family array from the google-fonts API. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @var array |
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*/ |
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private $font; |
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/** |
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* An array of instances for this object. |
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* |
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* @static |
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* @access private |
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* @since 3.0.28 |
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* @var array |
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*/ |
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private static $instances = array(); |
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/** |
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* Create an instance of this object for a specific font-family. |
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* |
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* @static |
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* @access public |
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* @since 3.0.28 |
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* @param string $family The font-family name. |
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* @return Kirki_Fonts_Google_Local |
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*/ |
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public static function init( $family ) { |
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$key = sanitize_key( $family ); |
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if ( ! isset( self::$instances[ $key ] ) ) { |
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self::$instances[ $key ] = new self( $family ); |
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} |
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return self::$instances[ $key ]; |
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} |
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/** |
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* Constructor. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @param string $family The font-family name. |
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*/ |
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private function __construct( $family ) { |
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$this->family = $family; |
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$key = sanitize_key( $this->family ); |
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$this->folder_path = $this->get_root_path() . "/$key"; |
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$this->folder_url = $this->get_root_url() . "/$key"; |
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$this->files = $this->get_font_family(); |
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} |
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/** |
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* Gets the @font-face CSS. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @param array $variants The variants we want to get. |
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* @return string |
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*/ |
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public function get_css( $variants = array() ) { |
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if ( ! $this->files ) { |
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return; |
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} |
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$key = md5( $this->files ); |
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$cached = get_transient( $key ); |
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if ( $cached ) { |
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return $cached; |
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} |
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$css = ''; |
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// If $variants is empty then use all variants available. |
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if ( empty( $variants ) ) { |
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$variants = array_keys( $this->files ); |
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} |
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// Download files. |
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$this->download_font_family( $variants ); |
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// Create the @font-face CSS. |
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foreach ( $variants as $variant ) { |
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$css .= $this->get_variant_fontface_css( $variant ); |
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} |
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set_transient( $key, $css, DAY_IN_SECONDS ); |
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return $css; |
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} |
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/** |
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* Get the @font-face CSS for a specific variant. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @param string $variant The variant. |
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* @return string |
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*/ |
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public function get_variant_fontface_css( $variant ) { |
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$font_face = "@font-face{font-family:'{$this->family}';"; |
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// Get the font-style. |
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$font_style = ( false !== strpos( $variant, 'italic' ) ) ? 'italic' : 'normal'; |
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$font_face .= "font-style:{$font_style};"; |
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// Get the font-weight. |
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$font_weight = '400'; |
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$font_weight = str_replace( 'italic', '', $variant ); |
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$font_weight = ( ! $font_weight || 'regular' === $font_weight ) ? '400' : $font_weight; |
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$font_face .= "font-weight:{$font_weight};"; |
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// Get the font-names. |
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$font_name_0 = $this->get_local_font_name( $variant, false ); |
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$font_name_1 = $this->get_local_font_name( $variant, true ); |
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$font_face .= "src:local('{$font_name_0}'),"; |
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if ( $font_name_0 !== $font_name_1 ) { |
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$font_face .= "local('{$font_name_1}'),"; |
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} |
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// Get the font-url. |
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$font_url = $this->get_variant_local_url( $variant ); |
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// Get the font-format. |
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$font_format = ( strpos( $font_url, '.woff2' ) ) ? 'woff2' : 'truetype'; |
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$font_format = ( strpos( $font_url, '.woff' ) && ! strpos( $font_url, '.woff2' ) ) ? 'woff' : $font_format; |
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$font_face .= "url({$font_url}) format('{$font_format}');}"; |
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return $font_face; |
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} |
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/** |
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* Gets the local URL for a variant. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @param string $variant The variant. |
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* @return string The URL. |
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*/ |
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public function get_variant_local_url( $variant ) { |
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$local_urls = $this->get_font_files_urls_local(); |
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if ( empty( $local_urls ) ) { |
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return; |
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} |
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// Return the specific variant if we can find it. |
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if ( isset( $local_urls[ $variant ] ) ) { |
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return $local_urls[ $variant ]; |
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} |
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// Return regular if the one we want could not be found. |
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if ( isset( $local_urls['regular'] ) ) { |
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return $local_urls['regular']; |
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} |
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// Return the first available if all else failed. |
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$vals = array_values( $local_urls ); |
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return $vals[0]; |
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} |
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/** |
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* Get the name of the font-family. |
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* This is used by @font-face in case the user already has the font downloaded locally. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @param string $variant The variant. |
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* @param bool $compact Whether we want the compact formatting or not. |
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* @return string |
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*/ |
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public function get_local_font_name( $variant, $compact = false ) { |
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$variant_names = array( |
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'100' => 'Thin', |
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'100i' => 'Thin Italic', |
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'100italic' => 'Thin Italic', |
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'200' => 'Extra-Light', |
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'200i' => 'Extra-Light Italic', |
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'200italic' => 'Extra-Light Italic', |
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'300' => 'Light', |
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'300i' => 'Light Italic', |
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'300italic' => 'Light Italic', |
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'400' => 'Regular', |
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'regular' => 'Regular', |
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'400i' => 'Regular Italic', |
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'italic' => 'Italic', |
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'400italic' => 'Regular Italic', |
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'500' => 'Medium', |
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'500i' => 'Medium Italic', |
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'500italic' => 'Medium Italic', |
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'600' => 'Semi-Bold', |
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'600i' => 'Semi-Bold Italic', |
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'600italic' => 'Semi-Bold Italic', |
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'700' => 'Bold', |
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'700i' => 'Bold Italic', |
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'700italic' => 'Bold Italic', |
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'800' => 'Extra-Bold', |
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'800i' => 'Extra-Bold Italic', |
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'800italic' => 'Extra-Bold Italic', |
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'900' => 'Black', |
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'900i' => 'Black Italic', |
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'900italic' => 'Black Italic', |
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); |
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$variant = (string) $variant; |
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if ( $compact ) { |
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if ( isset( $variant_names[ $variant ] ) ) { |
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return str_replace( array( ' ', '-' ), '', $this->family ) . '-' . str_replace( array( ' ', '-' ), '', $variant_names[ $variant ] ); |
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} |
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return str_replace( array( ' ', '-' ), '', $this->family ); |
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} |
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if ( isset( $variant_names[ $variant ] ) ) { |
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return $this->family . ' ' . $variant_names[ $variant ]; |
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} |
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return $this->family; |
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} |
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/** |
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* Get an array of font-files. |
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* Only contains the filenames. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @return array |
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*/ |
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public function get_font_files() { |
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$files = array(); |
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foreach ( $this->files as $key => $url ) { |
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$files[ $key ] = $this->get_filename_from_url( $url ); |
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} |
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return $files; |
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} |
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/** |
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* Get an array of local file URLs. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @return array |
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*/ |
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public function get_font_files_urls_local() { |
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$urls = array(); |
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$files = $this->get_font_files(); |
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foreach ( $files as $key => $file ) { |
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$urls[ $key ] = $this->folder_url . '/' . $file; |
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} |
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return $urls; |
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} |
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/** |
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* Get an array of local file paths. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @return array |
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*/ |
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public function get_font_files_paths() { |
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$paths = array(); |
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$files = $this->get_font_files(); |
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foreach ( $files as $key => $file ) { |
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$paths[ $key ] = $this->folder_path . '/' . $file; |
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} |
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return $paths; |
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} |
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/** |
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* Downloads a font-file and saves it locally. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @param string $url The URL of the file we want to get. |
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* @return bool |
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*/ |
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private function download_font_file( $url ) { |
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$contents = $this->get_remote_url_contents( $url ); |
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$path = $this->folder_path . '/' . $this->get_filename_from_url( $url ); |
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// If the folder doesn't exist, create it. |
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if ( ! file_exists( $this->folder_path ) ) { |
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Kirki_Helper::init_filesystem()->mkdir( $this->folder_path, FS_CHMOD_FILE ); |
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} |
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// If the file exists no reason to do anything. |
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if ( file_exists( $path ) ) { |
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return true; |
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} |
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// Write file. |
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return Kirki_Helper::init_filesystem()->put_contents( $path, $contents, FS_CHMOD_FILE ); |
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} |
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/** |
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* Get a font-family from the array of google-fonts. |
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* |
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* @access public |
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* @since 3.0.28 |
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* @return array |
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*/ |
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public function get_font_family() { |
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// Get the fonts array. |
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$fonts = $this->get_fonts(); |
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if ( isset( $fonts[ $this->family ] ) ) { |
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return $fonts[ $this->family ]; |
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} |
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return array(); |
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} |
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/** |
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* Gets the filename by breaking-down the URL parts. |
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* |
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* @access private |
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* @since 3.0.28 |
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* @param string $url The URL. |
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* @return string The filename. |
365
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*/ |
366
|
|
|
private function get_filename_from_url( $url ) { |
367
|
|
|
$url_parts = explode( '/', $url ); |
368
|
|
|
$parts_count = count( $url_parts ); |
369
|
|
|
if ( 1 < $parts_count ) { |
370
|
|
|
return $url_parts[ count( $url_parts ) - 1 ]; |
371
|
|
|
} |
372
|
|
|
return $url; |
373
|
|
|
} |
374
|
|
|
|
375
|
|
|
/** |
376
|
|
|
* Get the font defined in the google-fonts API. |
377
|
|
|
* |
378
|
|
|
* @access private |
379
|
|
|
* @since 3.0.28 |
380
|
|
|
* @return array |
381
|
|
|
*/ |
382
|
|
|
private function get_fonts() { |
383
|
|
|
ob_start(); |
384
|
|
|
include wp_normalize_path( dirname( __FILE__ ) . '/webfont-files.json' ); |
385
|
|
|
$json = ob_get_clean(); |
386
|
|
|
return json_decode( $json, true ); |
387
|
|
|
} |
388
|
|
|
|
389
|
|
|
/** |
390
|
|
|
* Gets the root fonts folder path. |
391
|
|
|
* Other paths are built based on this. |
392
|
|
|
* |
393
|
|
|
* @since 1.5 |
394
|
|
|
* @access public |
395
|
|
|
* @return string |
396
|
|
|
*/ |
397
|
|
|
public function get_root_path() { |
398
|
|
|
// Get the upload directory for this site. |
399
|
|
|
$upload_dir = wp_upload_dir(); |
400
|
|
|
$path = untrailingslashit( wp_normalize_path( $upload_dir['basedir'] ) ) . '/webfonts'; |
401
|
|
|
|
402
|
|
|
// If the folder doesn't exist, create it. |
403
|
|
|
if ( ! file_exists( $path ) ) { |
404
|
|
|
Kirki_Helper::init_filesystem()->mkdir( $path, FS_CHMOD_FILE ); |
|
|
|
|
405
|
|
|
} |
406
|
|
|
|
407
|
|
|
// Return the path. |
408
|
|
|
return apply_filters( 'kirki_googlefonts_root_path', $path ); |
409
|
|
|
} |
410
|
|
|
|
411
|
|
|
/** |
412
|
|
|
* Gets the root folder url. |
413
|
|
|
* Other urls are built based on this. |
414
|
|
|
* |
415
|
|
|
* @since 1.5 |
416
|
|
|
* @access public |
417
|
|
|
* @return string |
418
|
|
|
*/ |
419
|
|
|
public function get_root_url() { |
420
|
|
|
|
421
|
|
|
// Get the upload directory for this site. |
422
|
|
|
$upload_dir = wp_upload_dir(); |
423
|
|
|
|
424
|
|
|
// The URL. |
425
|
|
|
$url = trailingslashit( $upload_dir['baseurl'] ); |
426
|
|
|
// Take care of domain mapping. |
427
|
|
|
// When using domain mapping we have to make sure that the URL to the file |
428
|
|
|
// does not include the original domain but instead the mapped domain. |
429
|
|
|
if ( defined( 'DOMAIN_MAPPING' ) && DOMAIN_MAPPING ) { |
|
|
|
|
430
|
|
|
if ( function_exists( 'domain_mapping_siteurl' ) && function_exists( 'get_original_url' ) ) { |
431
|
|
|
$mapped_domain = domain_mapping_siteurl( false ); |
432
|
|
|
$original_domain = get_original_url( 'siteurl' ); |
433
|
|
|
$url = str_replace( $original_domain, $mapped_domain, $url ); |
434
|
|
|
} |
435
|
|
|
} |
436
|
|
|
return apply_filters( 'kirki_googlefonts_root_url', untrailingslashit( esc_url_raw( $url ) ) . '/webfonts' ); |
437
|
|
|
} |
438
|
|
|
|
439
|
|
|
/** |
440
|
|
|
* Download font-family files. |
441
|
|
|
* |
442
|
|
|
* @access public |
443
|
|
|
* @since 3.0.28 |
444
|
|
|
* @param array $variants An array of variants to download. Leave empty to download all. |
445
|
|
|
* @return void |
446
|
|
|
*/ |
447
|
|
|
public function download_font_family( $variants = array() ) { |
448
|
|
|
if ( empty( $variants ) ) { |
449
|
|
|
$variants = array_keys( $this->files ); |
450
|
|
|
} |
451
|
|
|
foreach ( $this->files as $variant => $file ) { |
452
|
|
|
if ( in_array( $variant, $variants ) ) { |
453
|
|
|
$this->download_font_file( $file ); |
454
|
|
|
} |
455
|
|
|
} |
456
|
|
|
} |
457
|
|
|
|
458
|
|
|
/** |
459
|
|
|
* Gets the remote URL contents. |
460
|
|
|
* |
461
|
|
|
* @access private |
462
|
|
|
* @since 3.0.28 |
463
|
|
|
* @param string $url The URL we want to get. |
464
|
|
|
* @return string The contents of the remote URL. |
465
|
|
|
*/ |
466
|
|
|
public function get_remote_url_contents( $url ) { |
467
|
|
|
$response = wp_remote_get( $url ); |
468
|
|
|
if ( is_wp_error( $response ) ) { |
469
|
|
|
return array(); |
470
|
|
|
} |
471
|
|
|
$html = wp_remote_retrieve_body( $response ); |
472
|
|
|
if ( is_wp_error( $html ) ) { |
473
|
|
|
return; |
474
|
|
|
} |
475
|
|
|
return $html; |
476
|
|
|
} |
477
|
|
|
} |
478
|
|
|
|