func copyStatic() error {
	staticDir := helpers.AbsPathify(viper.GetString("StaticDir")) + "/"
	if _, err := os.Stat(staticDir); os.IsNotExist(err) {
		jww.ERROR.Println("Unable to find Static Directory:", staticDir)
		return nil
	}

	publishDir := helpers.AbsPathify(viper.GetString("PublishDir")) + "/"

	syncer := fsync.NewSyncer()
	syncer.NoTimes = viper.GetBool("notimes")
	syncer.SrcFs = hugofs.SourceFs
	syncer.DestFs = hugofs.DestinationFS

	themeDir, err := helpers.GetThemeStaticDirPath()
	if err != nil {
		jww.ERROR.Println(err)
		return nil
	}

	if themeDir != "" {
		// Copy Static to Destination
		jww.INFO.Println("syncing from", themeDir, "to", publishDir)
		utils.CheckErr(syncer.Sync(publishDir, themeDir), fmt.Sprintf("Error copying static files of theme to %s", publishDir))
	}

	// Copy Static to Destination
	jww.INFO.Println("syncing from", staticDir, "to", publishDir)
	return syncer.Sync(publishDir, staticDir)
}

func copyStatic() error {
	publishDir := helpers.AbsPathify(viper.GetString("publishDir")) + helpers.FilePathSeparator

	// If root, remove the second '/'
	if publishDir == "//" {
		publishDir = helpers.FilePathSeparator
	}

	// Includes both theme/static & /static
	staticSourceFs := getStaticSourceFs()

	if staticSourceFs == nil {
		jww.WARN.Println("No static directories found to sync")
		return nil
	}

	syncer := fsync.NewSyncer()
	syncer.NoTimes = viper.GetBool("notimes")
	syncer.SrcFs = staticSourceFs
	syncer.DestFs = hugofs.Destination()
	// Now that we are using a unionFs for the static directories
	// We can effectively clean the publishDir on initial sync
	syncer.Delete = viper.GetBool("cleanDestinationDir")
	if syncer.Delete {
		jww.INFO.Println("removing all files from destination that don't exist in static dirs")
	}
	jww.INFO.Println("syncing static files to", publishDir)

	// because we are using a baseFs (to get the union right).
	// set sync src to root
	return syncer.Sync(publishDir, helpers.FilePathSeparator)
}

func copyStatic() error {
	publishDir := helpers.AbsPathify(viper.GetString("PublishDir")) + "/"

	// If root, remove the second '/'
	if publishDir == "//" {
		publishDir = "/"
	}

	syncer := fsync.NewSyncer()
	syncer.NoTimes = viper.GetBool("notimes")
	syncer.SrcFs = hugofs.SourceFs
	syncer.DestFs = hugofs.DestinationFS

	themeDir, err := helpers.GetThemeStaticDirPath()
	if err != nil {
		jww.ERROR.Println(err)
		return nil
	}

	// Copy the theme's static directory
	if themeDir != "" {
		jww.INFO.Println("syncing from", themeDir, "to", publishDir)
		utils.CheckErr(syncer.Sync(publishDir, themeDir), fmt.Sprintf("Error copying static files of theme to %s", publishDir))
	}

	// Copy the site's own static directory
	staticDir := helpers.AbsPathify(viper.GetString("StaticDir")) + "/"
	if _, err := os.Stat(staticDir); err == nil {
		jww.INFO.Println("syncing from", staticDir, "to", publishDir)
		return syncer.Sync(publishDir, staticDir)
	} else if os.IsNotExist(err) {
		jww.WARN.Println("Unable to find Static Directory:", staticDir)
	}
	return nil
}

func copyStatic() error {
	staticDir := helpers.AbsPathify(viper.GetString("StaticDir")) + "/"
	if _, err := os.Stat(staticDir); os.IsNotExist(err) {
		jww.ERROR.Println("Unable to find Static Directory:", staticDir)
		return nil
	}

	publishDir := helpers.AbsPathify(viper.GetString("PublishDir")) + "/"

	syncer := fsync.NewSyncer()
	syncer.SrcFs = hugofs.SourceFs
	syncer.DestFs = hugofs.DestinationFS

	if themeSet() {
		themeDir := helpers.AbsPathify("themes/"+viper.GetString("theme")) + "/static/"
		if _, err := os.Stat(themeDir); os.IsNotExist(err) {
			jww.ERROR.Println("Unable to find static directory for theme:", viper.GetString("theme"), "in", themeDir)
			return nil
		}

		// Copy Static to Destination
		jww.INFO.Println("syncing from", themeDir, "to", publishDir)
		utils.CheckErr(syncer.Sync(publishDir, themeDir), fmt.Sprintf("Error copying static files of theme to %s", publishDir))
	}

	// Copy Static to Destination
	jww.INFO.Println("syncing from", staticDir, "to", publishDir)
	return syncer.Sync(publishDir, staticDir)
}

//.........这里部分代码省略.........
					if isstatic {
						staticEvents = append(staticEvents, ev)
					} else {
						dynamicEvents = append(dynamicEvents, ev)
					}
				}

				if len(staticEvents) > 0 {
					publishDir := helpers.AbsPathify(viper.GetString("PublishDir")) + helpers.FilePathSeparator

					// If root, remove the second '/'
					if publishDir == "//" {
						publishDir = helpers.FilePathSeparator
					}

					jww.FEEDBACK.Println("\nStatic file changes detected")
					const layout = "2006-01-02 15:04 -0700"
					fmt.Println(time.Now().Format(layout))

					if viper.GetBool("ForceSyncStatic") {
						jww.FEEDBACK.Printf("Syncing all static files\n")
						err := copyStatic()
						if err != nil {
							utils.StopOnErr(err, fmt.Sprintf("Error copying static files to %s", helpers.AbsPathify(viper.GetString("PublishDir"))))
						}
					} else {
						staticSourceFs := getStaticSourceFs()

						if staticSourceFs == nil {
							jww.WARN.Println("No static directories found to sync")
							return
						}

						syncer := fsync.NewSyncer()
						syncer.NoTimes = viper.GetBool("notimes")
						syncer.SrcFs = staticSourceFs
						syncer.DestFs = hugofs.DestinationFS

						// prevent spamming the log on changes
						logger := helpers.NewDistinctFeedbackLogger()

						for _, ev := range staticEvents {
							// Due to our approach of layering both directories and the content's rendered output
							// into one we can't accurately remove a file not in one of the source directories.
							// If a file is in the local static dir and also in the theme static dir and we remove
							// it from one of those locations we expect it to still exist in the destination
							//
							// If Hugo generates a file (from the content dir) over a static file
							// the content generated file should take precedence.
							//
							// Because we are now watching and handling individual events it is possible that a static
							// event that occupies the same path as a content generated file will take precedence
							// until a regeneration of the content takes places.
							//
							// Hugo assumes that these cases are very rare and will permit this bad behavior
							// The alternative is to track every single file and which pipeline rendered it
							// and then to handle conflict resolution on every event.

							fromPath := ev.Name

							// If we are here we already know the event took place in a static dir
							relPath, err := helpers.MakeStaticPathRelative(fromPath)
							if err != nil {
								fmt.Println(err)
								continue
							}

// NewWatcher creates a new watcher to watch filesystem events.
func NewWatcher(port int) error {
	if runtime.GOOS == "darwin" {
		tweakLimit()
	}

	watcher, err := watcher.New(1 * time.Second)
	var wg sync.WaitGroup

	if err != nil {
		return err
	}

	defer watcher.Close()

	wg.Add(1)

	for _, d := range getDirList() {
		if d != "" {
			_ = watcher.Add(d)
		}
	}

	go func() {
		for {
			select {
			case evs := <-watcher.Events:
				jww.INFO.Println("File System Event:", evs)

				staticChanged := false
				dynamicChanged := false
				staticFilesChanged := make(map[string]bool)

				for _, ev := range evs {
					ext := filepath.Ext(ev.Name)
					istemp := strings.HasSuffix(ext, "~") || (ext == ".swp") || (ext == ".swx") || (ext == ".tmp") || strings.HasPrefix(ext, ".goutputstream") || strings.HasSuffix(ext, "jb_old___") || strings.HasSuffix(ext, "jb_bak___")
					if istemp {
						continue
					}
					// renames are always followed with Create/Modify
					if ev.Op&fsnotify.Rename == fsnotify.Rename {
						continue
					}

					// Write and rename operations are often followed by CHMOD.
					// There may be valid use cases for rebuilding the site on CHMOD,
					// but that will require more complex logic than this simple conditional.
					// On OS X this seems to be related to Spotlight, see:
					// https://github.com/go-fsnotify/fsnotify/issues/15
					// A workaround is to put your site(s) on the Spotlight exception list,
					// but that may be a little mysterious for most end users.
					// So, for now, we skip reload on CHMOD.
					if ev.Op&fsnotify.Chmod == fsnotify.Chmod {
						continue
					}

					isstatic := strings.HasPrefix(ev.Name, helpers.GetStaticDirPath()) || (len(helpers.GetThemesDirPath()) > 0 && strings.HasPrefix(ev.Name, helpers.GetThemesDirPath()))
					staticChanged = staticChanged || isstatic
					dynamicChanged = dynamicChanged || !isstatic

					if isstatic {
						staticFilesChanged[ev.Name] = true
					}

					// add new directory to watch list
					if s, err := os.Stat(ev.Name); err == nil && s.Mode().IsDir() {
						if ev.Op&fsnotify.Create == fsnotify.Create {
							watcher.Add(ev.Name)
						}
					}
				}

				if staticChanged {
					jww.FEEDBACK.Printf("Static file changed, syncing\n")
					if viper.GetBool("ForceSyncStatic") {
						jww.FEEDBACK.Printf("Syncing all static files\n")
						err := copyStatic()
						if err != nil {
							fmt.Println(err)
							utils.StopOnErr(err, fmt.Sprintf("Error copying static files to %s", helpers.AbsPathify(viper.GetString("PublishDir"))))
						}
					} else {

						syncer := fsync.NewSyncer()
						syncer.NoTimes = viper.GetBool("notimes")
						syncer.SrcFs = hugofs.SourceFs
						syncer.DestFs = hugofs.DestinationFS

						publishDir := helpers.AbsPathify(viper.GetString("PublishDir")) + helpers.FilePathSeparator

						if publishDir == "//" || publishDir == helpers.FilePathSeparator {
							publishDir = ""
						}

						staticDir := helpers.GetStaticDirPath()
						themeStaticDir := helpers.GetThemesDirPath()

						jww.FEEDBACK.Printf("StaticDir '%s'\nThemeStaticDir '%s'\n", staticDir, themeStaticDir)

						for path := range staticFilesChanged {
//.........这里部分代码省略.........