1 files changed, 44 insertions, 0 deletions
diff --git a/dom/filesystem/FileSystemUtils.h b/dom/filesystem/FileSystemUtils.h
new file mode 100644
index 000000000..ae302e07c
--- /dev/null
+++ b/dom/filesystem/FileSystemUtils.h
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_FileSystemUtils_h
+#define mozilla_dom_FileSystemUtils_h
+
+class nsIFile;
+
+namespace mozilla {
+namespace dom {
+
+#define FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL "/"
+#define FILESYSTEM_DOM_PATH_SEPARATOR_CHAR '/'
+
+/*
+ * This class is for error handling.
+ * All methods in this class are static.
+ */
+class FileSystemUtils
+{
+public:
+  /*
+   * Return true if aDescendantPath is a descendant of aPath.
+   */
+  static bool
+  IsDescendantPath(const nsAString& aPath,
+                   const nsAString& aDescendantPath);
+
+  /**
+   * Return true if this is valid DOMPath. It also splits the path in
+   * subdirectories and stores them in aParts.
+   */
+  static bool
+  IsValidRelativeDOMPath(const nsAString& aPath,
+                         nsTArray<nsString>& aParts);
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_FileSystemUtils_h