--- /dev/null
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build appengine !linux,!darwin,!freebsd,!openbsd,!netbsd
+
+package fastwalk
+
+import (
+ "io/ioutil"
+ "os"
+)
+
+// readDir calls fn for each directory entry in dirName.
+// It does not descend into directories or follow symlinks.
+// If fn returns a non-nil error, readDir returns with that error
+// immediately.
+func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
+ fis, err := ioutil.ReadDir(dirName)
+ if err != nil {
+ return err
+ }
+ skipFiles := false
+ for _, fi := range fis {
+ if fi.Mode().IsRegular() && skipFiles {
+ continue
+ }
+ if err := fn(dirName, fi.Name(), fi.Mode()&os.ModeType); err != nil {
+ if err == ErrSkipFiles {
+ skipFiles = true
+ continue
+ }
+ return err
+ }
+ }
+ return nil
+}