fspider

type PathSet interface {
	Add(string)
	Remove(string)
	Contains(string) bool
	Paths() []string
}

type Spider interface {
	// use to watch a path
	Spide(path string) error
	// use to unwatch a path
	UnSpide(path string) error
	// return a channel that will receive all the files that have been changed(edited,or created), this method is thread safe
	FilesChanged() <-chan string
	// return all paths that are being watched, this method is thread safe
	AllPaths() []string
	// return all files that are being watched, this method is thread safe
	AllFiles() []string
	// return all dirs that are being watched, this method is thread safe
	AllDirs() []string
	// stop watching files,releasing all resources, this method is thread safe,
	// this function must be called at the end of the life cycle
	Stop()
}