// Copyright 2020 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package fs // A StatFS is a file system with a Stat method. type StatFS interface { FS // Stat returns a FileInfo describing the file. // If there is an error, it should be of type *PathError. Stat(name string) (FileInfo, error) } // Stat returns a [FileInfo] describing the named file from the file system. // // If fs implements [StatFS], Stat calls fs.Stat. // Otherwise, Stat opens the [File] to stat it. func Stat(fsys FS, name string) (FileInfo, error) { if fsys, ok := fsys.(StatFS); ok { return fsys.Stat(name) } file, err := fsys.Open(name) if err != nil { return nil, err } defer file.Close() return file.Stat() }