dom/file/EmptyBlobImpl.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "EmptyBlobImpl.h"
   8 #include "nsStringStream.h"
   9
  10 namespace mozilla::dom {
  11
  12 already_AddRefed<BlobImpl> EmptyBlobImpl::CreateSlice(
  13     uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
  14     ErrorResult& aRv) const {
  15   MOZ_ASSERT(!aStart && !aLength);
  16   RefPtr<BlobImpl> impl = new EmptyBlobImpl(aContentType);
  17   return impl.forget();
  18 }
  19
  20 void EmptyBlobImpl::CreateInputStream(nsIInputStream** aStream,
  21                                       ErrorResult& aRv) const {
  22   if (NS_WARN_IF(!aStream)) {
  23     aRv.Throw(NS_ERROR_FAILURE);
  24     return;
  25   }
  26
  27   nsresult rv = NS_NewCStringInputStream(aStream, ""_ns);
  28   if (NS_WARN_IF(NS_FAILED(rv))) {
  29     aRv.Throw(rv);
  30     return;
  31   }
  32 }
  33
  34 }  // namespace mozilla::dom