add some hacky experiments for inotify event parsing

internal/walker/walker.go

@@ -0,0 +1,47 @@
+package walker
+
+import (
+	"fmt"
+	"io/ioutil"
+)
+
+func Walk(root string) (dirCh chan string, errCh chan error) {
+	dirCh = make(chan string)
+	errCh = make(chan error)
+	dirs := make([]string, 1)
+	dirs[0] = root
+
+	go func() {
+		dirCh <- root
+	}()
+	go func() {
+		for {
+			if len(dirs) == 0 {
+				break
+			}
+			dirs = descent(dirs, dirCh, errCh)
+		}
+		close(dirCh)
+		close(errCh)
+	}()
+	return dirCh, errCh
+}
+
+func descent(dirs []string, dirCh chan string, errCh chan error) []string {
+	next := make([]string, 0)
+	for _, dir := range dirs {
+		ls, err := ioutil.ReadDir(dir)
+		if err != nil {
+			errCh <- fmt.Errorf("opening dir %s: %v", dir, err)
+		}
+
+		for _, e := range ls {
+			if e.IsDir() {
+				newDir := dir + e.Name() + "/"
+				dirCh <- newDir
+				next = append(next, newDir)
+			}
+		}
+	}
+	return next
+}