106 lines
2.1 KiB
Go
106 lines
2.1 KiB
Go
package main
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import (
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"os"
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"path/filepath"
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"github.com/fsnotify/fsnotify"
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)
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type RecursiveWatcher struct {
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watcher *fsnotify.Watcher
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paths map[string]bool
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recursive bool
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}
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func NewRecursiveWatcher(recursive bool) (*RecursiveWatcher, error) {
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watcher, err := fsnotify.NewWatcher()
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if err != nil {
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return nil, err
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}
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return &RecursiveWatcher{watcher, make(map[string]bool), recursive}, nil
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}
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func (rw *RecursiveWatcher) Close() error {
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return rw.watcher.Close()
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}
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func (rw *RecursiveWatcher) AddPath(root string) error {
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info, err := os.Stat(root)
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if err != nil {
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return err
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}
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if info.Mode().IsRegular() {
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root = filepath.Dir(root)
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if rw.paths[root] {
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return nil
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}
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if err := rw.watcher.Add(root); err != nil {
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return err
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}
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rw.paths[root] = true
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return nil
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} else if !rw.recursive {
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if rw.paths[root] {
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return nil
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}
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if err := rw.watcher.Add(root); err != nil {
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return err
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}
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rw.paths[root] = true
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return nil
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} else {
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return filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if info.Mode().IsDir() {
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if !validDir(info) || rw.paths[path] {
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return filepath.SkipDir
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}
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if err := rw.watcher.Add(path); err != nil {
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return err
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}
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rw.paths[path] = true
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}
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return nil
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})
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}
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}
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func (rw *RecursiveWatcher) Run() chan string {
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files := make(chan string, 10)
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go func() {
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for rw.watcher.Events != nil && rw.watcher.Errors != nil {
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select {
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case event, ok := <-rw.watcher.Events:
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if !ok {
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rw.watcher.Events = nil
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break
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}
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if info, err := os.Stat(event.Name); err == nil {
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if validDir(info) {
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if event.Op&fsnotify.Create == fsnotify.Create {
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if err := rw.AddPath(event.Name); err != nil {
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Error.Println(err)
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}
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}
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} else if validFile(info) {
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if event.Op&fsnotify.Create == fsnotify.Create || event.Op&fsnotify.Write == fsnotify.Write {
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files <- event.Name
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}
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}
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}
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case err, ok := <-rw.watcher.Errors:
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if !ok {
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rw.watcher.Errors = nil
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break
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}
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Error.Println(err)
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}
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}
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close(files)
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}()
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return files
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}
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