From 61a1ff89688956ab0295bc2302423dd431a4a228 Mon Sep 17 00:00:00 2001
From: Benjamin Radovsky <radovskyb@gmail.com>
Date: Thu, 13 Dec 2018 11:17:00 +1100
Subject: [PATCH] Check hidden files correctly for windows.

---
 ishidden.go         | 12 ++++++++++++
 ishidden_windows.go | 21 +++++++++++++++++++++
 watcher.go          | 24 +++++++++++++++++++++---
 3 files changed, 54 insertions(+), 3 deletions(-)
 create mode 100644 ishidden.go
 create mode 100644 ishidden_windows.go

diff --git a/ishidden.go b/ishidden.go
new file mode 100644
index 0000000..0f242e8
--- /dev/null
+++ b/ishidden.go
@@ -0,0 +1,12 @@
+// +build !windows
+
+package watcher
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+func isHiddenFile(path string) (bool, error) {
+	return strings.HasPrefix(filepath.Base(path), "."), nil
+}
diff --git a/ishidden_windows.go b/ishidden_windows.go
new file mode 100644
index 0000000..306c6b7
--- /dev/null
+++ b/ishidden_windows.go
@@ -0,0 +1,21 @@
+// +build windows
+
+package watcher
+
+import (
+	"syscall"
+)
+
+func isHiddenFile(path string) (bool, error) {
+	pointer, err := syscall.UTF16PtrFromString(path)
+	if err != nil {
+		return false, err
+	}
+
+	attributes, err := syscall.GetFileAttributes(pointer)
+	if err != nil {
+		return false, err
+	}
+
+	return attributes&syscall.FILE_ATTRIBUTE_HIDDEN != 0, nil
+}
diff --git a/watcher.go b/watcher.go
index 07ab8ea..e353296 100644
--- a/watcher.go
+++ b/watcher.go
@@ -197,7 +197,13 @@ func (w *Watcher) Add(name string) (err error) {
 	// If name is on the ignored list or if hidden files are
 	// ignored and name is a hidden file or directory, simply return.
 	_, ignored := w.ignored[name]
-	if ignored || (w.ignoreHidden && strings.HasPrefix(name, ".")) {
+
+	isHidden, err := isHiddenFile(name)
+	if err != nil {
+		return err
+	}
+
+	if ignored || (w.ignoreHidden && isHidden) {
 		return nil
 	}
 
@@ -244,7 +250,13 @@ outer:
 	for _, fInfo := range fInfoList {
 		path := filepath.Join(name, fInfo.Name())
 		_, ignored := w.ignored[path]
-		if ignored || (w.ignoreHidden && strings.HasPrefix(fInfo.Name(), ".")) {
+
+		isHidden, err := isHiddenFile(path)
+		if err != nil {
+			return nil, err
+		}
+
+		if ignored || (w.ignoreHidden && isHidden) {
 			continue
 		}
 
@@ -308,7 +320,13 @@ func (w *Watcher) listRecursive(name string) (map[string]os.FileInfo, error) {
 		// If path is ignored and it's a directory, skip the directory. If it's
 		// ignored and it's a single file, skip the file.
 		_, ignored := w.ignored[path]
-		if ignored || (w.ignoreHidden && strings.HasPrefix(info.Name(), ".")) {
+
+		isHidden, err := isHiddenFile(path)
+		if err != nil {
+			return err
+		}
+
+		if ignored || (w.ignoreHidden && isHidden) {
 			if info.IsDir() {
 				return filepath.SkipDir
 			}