go stat 源码
golang stat 代码
文件路径：/src/io/fs/stat.go
// 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()
}
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