gofs

type File interface {
	io.Closer
	io.Reader
	io.ReaderAt
	io.Seeker
	io.Writer
	io.WriterAt

	Name() string
	Readdir(count int) ([]os.FileInfo, error)
	Readdirnames(n int) ([]string, error)
	Stat() (os.FileInfo, error)
	Sync() error
	Truncate(size int64) error
	WriteString(s string) (ret int, err error)
}

type Fs interface {
	Create(name string) (File, error)
	Remove(path string) error
	RemoveAll(path string) error
	Stat(path string) (os.FileInfo, error)
	Lstat(path string) (os.FileInfo, error)
	ReadDir(dirname string) ([]os.FileInfo, error)
	ReadFile(path string) ([]byte, error)
	Mkdir(path string, perm os.FileMode) error
	MkdirAll(path string, perm os.FileMode) error
	Open(path string) (File, error)
	WriteFile(path string, data []byte, perm os.FileMode) error
	Rename(old, new string) error
	OpenFile(name string, flag int, perm os.FileMode) (File, error)
	Symlink(oldName, newName string) error
	Chmod(name string, mode os.FileMode) error
	Readlink(path string) (string, error)
}

type OsFs struct{}

type WalkOptions struct {
	IncludesMatcher,
	ExcludesMatcher patternmatcher.Matcher
	MaxConcurrency uint
	// FollowSymlinks treats a symlink as if it were the file/directory underneath, effectively hiding the symlink from the consumer.
	// It can be used with a chain of symlinks, in which case it will keep following the links, until it reaches a non-symlink
	FollowSymlinks bool
}