filesystem

type DefaultFs struct{}

type FSErrorHandler func(err error)

type FSEventHandler func(event fsnotify.Event)

type FSWatcher interface {
	// Initializes the watcher with the given watch handlers.
	// Called before all other methods.
	Init(FSEventHandler, FSErrorHandler) error

	// Starts listening for events and errors.
	// When an event or error occurs, the corresponding handler is called.
	Run()

	// Add a filesystem path to watch
	AddWatch(path string) error
}

type File interface {
	// for now, the only os.File methods used are those below, add more as necessary
	Name() string
	Write(b []byte) (n int, err error)
	WriteString(s string) (n int, err error)
	Sync() error
	Close() error
	Read(b []byte) (n int, err error)
	Readdir(n int) ([]os.FileInfo, error)
}

type Filesystem interface {
	// from "os"
	Stat(name string) (os.FileInfo, error)
	Create(name string) (File, error)
	Open(name string) (File, error)
	OpenFile(name string, flag int, perm os.FileMode) (File, error)
	Rename(oldpath, newpath string) error
	MkdirAll(path string, perm os.FileMode) error
	Chtimes(name string, atime time.Time, mtime time.Time) error
	RemoveAll(path string) error
	Remove(name string) error
	Chmod(name string, mode os.FileMode) error
	Getwd() (dir string, err error)
	ReadFile(filename string) ([]byte, error)
	WriteFile(filename string, data []byte, perm os.FileMode) error
	TempDir(dir, prefix string) (string, error)
	TempFile(dir, prefix string) (File, error)
	ReadDir(dirname string) ([]os.FileInfo, error)

	// from "filepath"
	Walk(root string, walkFn filepath.WalkFunc) error
}