Add upstream

wp-content/plugins/jetpack/modules/theme-tools.php

@@ -0,0 +1,70 @@
+<?php
+/*
+ * Load code specific to themes or theme tools
+ * This file is special, and is not an actual `module` as such.
+ * It is included by ./module-extras.php
+ */
+
+function jetpack_load_theme_tools() {
+	if ( current_theme_supports( 'tonesque' ) ) {
+		jetpack_require_lib( 'tonesque' );
+	}
+}
+add_action( 'init', 'jetpack_load_theme_tools', 30 );
+
+/**
+ * Load theme compat file if it exists.
+ */
+function jetpack_load_theme_compat() {
+
+	/**
+	 * Filter theme compat files.
+	 *
+	 * Themes can add their own compat files here if they like. For example:
+	 *
+	 * add_filter( 'jetpack_theme_compat_files', 'mytheme_jetpack_compat_file' );
+	 * function mytheme_jetpack_compat_file( $files ) {
+	 *     $files['mytheme'] = locate_template( 'jetpack-compat.php' );
+	 *     return $files;
+	 * }
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array Associative array of theme compat files to load.
+	 */
+	$compat_files = apply_filters( 'jetpack_theme_compat_files', array(
+		'twentyfourteen'   => JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentyfourteen.php',
+		'twentyfifteen'    => JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentyfifteen.php',
+		'twentysixteen'    => JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentysixteen.php',
+		'twentyseventeen'  => JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentyseventeen.php',
+		'twentynineteen'   => JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentynineteen.php',
+	) );
+
+	_jetpack_require_compat_file( get_stylesheet(), $compat_files );
+
+	if ( is_child_theme() ) {
+		_jetpack_require_compat_file( get_template(), $compat_files );
+	}
+}
+add_action( 'after_setup_theme', 'jetpack_load_theme_compat', -1 );
+
+
+/**
+ * Requires a file once, if the passed key exists in the files array.
+ *
+ * @access private
+ * @param string $key
+ * @param array $files
+ * @return void
+ */
+function _jetpack_require_compat_file( $key, $files ) {
+	if ( ! is_string( $key ) ) {
+		return new WP_Error( 'key_not_string', 'The specified key is not actually a string.', compact( 'key' ) );
+	}
+
+	if ( array_key_exists( $key, $files ) && is_readable( $files[ $key ] ) ) {
+		require_once $files[ $key ];
+	}
+}