1 files changed, 60 insertions, 0 deletions
diff --git a/dom/file/FileReaderSync.h b/dom/file/FileReaderSync.h
new file mode 100644
index 0000000000..84eb5a73a8
--- /dev/null
+++ b/dom/file/FileReaderSync.h
@@ -0,0 +1,60 @@
+/* -*- 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_filereadersync_h__
+#define mozilla_dom_filereadersync_h__
+
+#include "mozilla/dom/WorkerCommon.h"
+#include "nsISupports.h"
+
+class nsIInputStream;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+class Blob;
+class GlobalObject;
+template <typename>
+class Optional;
+
+class FileReaderSync final {
+  NS_INLINE_DECL_REFCOUNTING(FileReaderSync)
+
+ private:
+  // Private destructor, to discourage deletion outside of Release():
+  ~FileReaderSync() = default;
+
+  nsresult ConvertStream(nsIInputStream* aStream, const char* aCharset,
+                         nsAString& aResult);
+
+  nsresult ConvertAsyncToSyncStream(
+      uint64_t aStreamSize, already_AddRefed<nsIInputStream> aAsyncStream,
+      nsIInputStream** aSyncStream);
+
+  nsresult SyncRead(nsIInputStream* aStream, char* aBuffer,
+                    uint32_t aBufferSize, uint32_t* aTotalBytesRead);
+
+ public:
+  static already_AddRefed<FileReaderSync> Constructor(
+      const GlobalObject& aGlobal);
+
+  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
+                  JS::MutableHandle<JSObject*> aReflector);
+
+  void ReadAsArrayBuffer(JSContext* aCx, JS::Handle<JSObject*> aScopeObj,
+                         Blob& aBlob, JS::MutableHandle<JSObject*> aRetval,
+                         ErrorResult& aRv);
+  void ReadAsBinaryString(Blob& aBlob, nsAString& aResult, ErrorResult& aRv);
+  void ReadAsText(Blob& aBlob, const Optional<nsAString>& aEncoding,
+                  nsAString& aResult, ErrorResult& aRv);
+  void ReadAsDataURL(Blob& aBlob, nsAString& aResult, ErrorResult& aRv);
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_filereadersync_h__