fileutil

type CopyOptions struct {
	Overwrite bool // Overwrite replaces the destination file if it already exists.
}

type FileManager interface {
	Open(path string) (*os.File, error)
	OpenReaderIfExists(path string) (io.Reader, error)
	ReadDirEntryNames(path string) ([]string, error)
	Remove(path string) error
	RemoveAll(path string) error
	Write(path string, value string, perm os.FileMode) error
	WriteBytes(path string, value []byte) error
	FileSizeInBytes(pth string) (int64, error)
	CopyFile(src, dst string, opts *CopyOptions) error
	CopyFileFS(fsys fs.FS, src, dst string, opts *CopyOptions) error
	CopyDir(src, dst string, opts *CopyOptions) error
	Lstat(path string) (os.FileInfo, error)
	LastNLines(s string, n int) string
}

type OsProxy interface {
	Stat(name string) (os.FileInfo, error)
	Lstat(name string) (os.FileInfo, error)
	Readlink(name string) (string, error)
	Symlink(oldname, newname string) error
	Mkdir(name string, perm os.FileMode) error
	MkdirAll(path string, perm os.FileMode) error
	Open(name string) (*os.File, error)
	Create(name string) (*os.File, error)
	Remove(name string) error
	RemoveAll(path string) error
	Rename(oldpath, newpath string) error
	Chmod(name string, mode os.FileMode) error
	Chown(name string, uid, gid int) error
	Chtimes(name string, atime, mtime time.Time) error
	Getwd() (string, error)
	Abs(path string) (string, error)
	DirFS(dir string) fs.FS
	OpenFile(name string, flag int, perm os.FileMode) (*os.File, error)
	Lchown(name string, uid, gid int) error
}

type RealOS struct{}

type SysStat struct {
	Uid int
	Gid int
}