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package wfs
import (
"io"
"io/fs"
"path"
)
type ReadLinkFS interface {
fs.FS
ReadLink(string) (string, error)
Lstat(string) (fs.FileInfo, error)
}
func ReadLink(fsys fs.FS, name string) (string, error) {
sym, ok := fsys.(ReadLinkFS)
if !ok {
return "", &fs.PathError{Op: "readlink", Path: name, Err: fs.ErrInvalid}
}
return sym.ReadLink(name)
}
func Lstat(fsys fs.FS, name string) (fs.FileInfo, error) {
sym, ok := fsys.(ReadLinkFS)
if !ok {
return fs.Stat(fsys, name)
}
return sym.Lstat(name)
}
type FS interface {
fs.FS
Create(string, fs.FileMode) (io.WriteCloser, error)
Remove(string) error
Mkdir(string) error
Symlink(string, string) error
Chmod(string, fs.FileMode) error
}
type MkdirModeFS interface {
FS
MkdirMode(string, fs.FileMode) error
}
func MkdirMode(fsys FS, name string, mode fs.FileMode) error {
if fsys, ok := fsys.(MkdirModeFS); ok {
return fsys.MkdirMode(name, mode)
}
if err := fsys.Mkdir(name); err != nil {
return err
}
return fsys.Chmod(name, mode)
}
func removeDir(fsys FS, dir string) error {
entries, err := fs.ReadDir(fsys, dir)
if err != nil {
return err
}
for _, f := range entries {
name := path.Join(dir, f.Name())
if f.IsDir() {
err = removeDir(fsys, name)
} else {
err = fsys.Remove(name)
}
if err != nil {
return err
}
}
return fsys.Remove(dir)
}
func RemoveAll(fsys FS, path string) error {
stat, err := Lstat(fsys, path)
if err != nil {
return err
}
if stat.IsDir() {
return removeDir(fsys, path)
}
return fsys.Remove(path)
}
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