Ticket #58919: add_get_mo_files_from_path_1.diff

src/wp-includes/class-wp-textdomain-registry.php

@@ -226 +226 @@
         private function set_cached_mo_files( $path ) {
                 $this->cached_mo_files[ $path ] = array();
 
-                $mo_files = glob( $path . '/*.mo' );
+                /**
+                 * Filters the .mo files retrieved from a specified path.
+                 *
+                 * This filter allows you to change the way .mo files are fetched from a given path.
+                 * This can be useful in situations where the directory contains a large number of files
+                 * and the default glob() function becomes expensive in terms of performance.
+                 *
+                 * @since TBD
+                 *
+                 * @param null|array $mo_files Null by default, allowing the usual glob() function to run. If a non-null value
+                 *                             is returned by the filter, this value is used instead of running glob().
+                 *                             Should be an array of .mo files if not null.
+                 * @param string $path The path from which .mo files are being fetched.
+                **/
+                $mo_files = apply_filters( 'get_mo_files_from_path', null, $path );
+                if ( null === $mo_files ) {
+                        $mo_files = glob( $path . '/*.mo' );
+                }
 
                 if ( $mo_files ) {
                         $this->cached_mo_files[ $path ] = $mo_files;