1 files changed, 34 insertions, 0 deletions
diff --git a/dom/file/EmptyBlobImpl.cpp b/dom/file/EmptyBlobImpl.cpp
new file mode 100644
index 0000000000..5fa1055b4d
--- /dev/null
+++ b/dom/file/EmptyBlobImpl.cpp
@@ -0,0 +1,34 @@
+/* -*- 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/. */
+
+#include "EmptyBlobImpl.h"
+#include "nsStringStream.h"
+
+namespace mozilla::dom {
+
+already_AddRefed<BlobImpl> EmptyBlobImpl::CreateSlice(
+    uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
+    ErrorResult& aRv) const {
+  MOZ_ASSERT(!aStart && !aLength);
+  RefPtr<BlobImpl> impl = new EmptyBlobImpl(aContentType);
+  return impl.forget();
+}
+
+void EmptyBlobImpl::CreateInputStream(nsIInputStream** aStream,
+                                      ErrorResult& aRv) const {
+  if (NS_WARN_IF(!aStream)) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+
+  nsresult rv = NS_NewCStringInputStream(aStream, ""_ns);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return;
+  }
+}
+
+}  // namespace mozilla::dom