57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
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package nar
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import (
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"io/fs"
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"os"
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)
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type DirFS string
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func (dir DirFS) Open(name string) (fs.File, error) {
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if !fs.ValidPath(name) {
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return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrInvalid}
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}
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f, err := os.Open(dir.Join(name))
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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func (dir DirFS) Stat(name string) (fs.FileInfo, error) {
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if !fs.ValidPath(name) {
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return nil, &fs.PathError{Op: "stat", Path: name, Err: fs.ErrInvalid}
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}
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f, err := os.Stat(dir.Join(name))
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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func (dir DirFS) Lstat(name string) (fs.FileInfo, error) {
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if !fs.ValidPath(name) {
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return nil, &fs.PathError{Op: "lstat", Path: name, Err: fs.ErrInvalid}
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}
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f, err := os.Lstat(dir.Join(name))
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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func (dir DirFS) Readlink(name string) (string, error) {
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if !fs.ValidPath(name) {
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return "", &fs.PathError{Op: "readlink", Path: name, Err: fs.ErrInvalid}
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}
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f, err := os.Readlink(dir.Join(name))
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if err != nil {
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return "", err
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}
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return f, nil
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}
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func (dir DirFS) Join(name string) string {
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return string(dir) + string(os.PathSeparator) + name
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}
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