Ticket #45103: 45103.2.diff

src/wp-includes/class.wp-scripts.php

@@ -463 +463 @@
                 return parent::set_group( $handle, $recursion, $grp );
         }
 
+        /**
+         * Register a translation textdomain.
+         *
+         * @since 5.0.0
+         *
+         * @param string $handle Name of the script to register a translation domain to.
+         * @param string $domain The textdomain.
+         * @param string $path   Optional. The full file path to the directory containing translation files.
+         *
+         * @return bool True if the textdomain was registered, false if not.
+         */
+        public function set_translations( $handle, $domain, $path = null ) {
+                if ( ! isset( $this->registered[ $handle ] ) ) {
+                        return false;
+                }
+
+                /** @var \_WP_Dependency $obj */
+                $obj = $this->registered[ $handle ];
+
+                /** This filter is documented in wp-includes/class.wp-scripts.php */
+                $src = esc_url( apply_filters( 'script_loader_src', $obj->src, $handle ) );
+
+                $relative          = false;
+                $languages_path    = WP_LANG_DIR;
+                $json_translations = false;
+
+                // First see if the script is from the content directory.
+                $content_url = content_url();
+                if ( strpos( $content_url, $src ) === 0 ) {
+                        // Make the src relative the specific plugin or theme.
+                        $relative = trim( substr( $src, strlen( $content_url ) ), '/' );
+                        $relative = explode( '/', $relative );
+
+                        $languages_path = WP_LANG_DIR . '/' . $relative[0];
+
+                        $relative = array_slice( $relative, 2 );
+                        $relative = implode( '/', $relative );
+                } else {
+                        // Otherwise check if it's from another WP directory.
+                        $site_url = site_url();
+                        if ( strpos( $site_url, $src ) === 0 ) {
+                                // Make the src relative to the WP root.
+                                $relative = substr( $src, strlen( $site_url ) );
+                                $relative = trim( $relative, '/' );
+                        }
+                }
+
+                // If the source is not from WP.
+                if ( false === $relative ) {
+                        return false;
+                }
+
+                $locale = is_admin() ? get_locale() : get_user_locale();
+
+                $filename = $domain . '-' . $locale . '-' . md5( $relative ) . '.json';
+
+                // If a registered path was given check if a translation exists.
+                if ( $path && file_exists( $path . '/' . $filename ) ) {
+                        $json_translations = file_get_contents( $path . '/' . $filename );
+                }
+
+                // Otherwise check if the translation exists in the languages path.
+                if ( ! $json_translations && file_exists( $languages_path . '/' . $filename ) ) {
+                        $json_translations = file_get_contents( $languages_path . '/' . $filename );
+                }
+
+                if ( ! $json_translations ) {
+                        return false;
+                }
+
+                $obj->deps[] = 'wp-i18n';
+
+                return $this->add_inline_script( $handle, 'wp.i18n.setLocaleData( ' . $json_translations . ', ' . $domain . ' );', 'before' );
+        }
+
         /**
          * Determines script dependencies.
      *

src/wp-includes/functions.wp-scripts.php

@@ -192 +192 @@
         return $wp_scripts->localize( $handle, $object_name, $l10n );
 }
 
+/**
+ * Register translated strings for a script.
+ *
+ * Works only if the script has already been added.
+ *
+ * @see WP_Scripts::register_textdomain()
+ * @link https://core.trac.wordpress.org/ticket/45103
+ * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
+ *
+ * @since 5.0.0
+ *
+ * @param string $handle Script handle the textdomain will be attached to.
+ * @param string $domain The textdomain.
+ * @param string $path   Optional. The full file path to the directory containing translation files.
+ *
+ * @return bool True if the textdomain was successfully localized, false otherwise.
+ */
+function wp_set_script_translations( $handle, $domain, $path = null ) {
+        global $wp_scripts;
+        if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
+                _wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
+                return false;
+        }
+
+        return $wp_scripts->set_translations( $handle, $domain, $path );
+}
+
 /**
  * Remove a registered script.
  *