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/* -*- 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 */
#include "IndexedDBCommon.h"
#include "js/StructuredClone.h"
#include "mozilla/SnappyUncompressInputStream.h"
namespace mozilla::dom::indexedDB {
// aStructuredCloneData is a parameter rather than a return value because one
// caller preallocates it on the heap not immediately before calling for some
// reason. Maybe this could be changed.
nsresult SnappyUncompressStructuredCloneData(
nsIInputStream& aInputStream, JSStructuredCloneData& aStructuredCloneData) {
const auto snappyInputStream =
char buffer[kFileCopyBufferSize];
[&snappyInputStream = *snappyInputStream, &buffer] {
buffer, sizeof(buffer)));
&buffer](const uint32_t& numRead) -> Result<Ok, nsresult> {
QM_TRY(OkIf(aStructuredCloneData.AppendBytes(buffer, numRead)),
return Ok{};
return NS_OK;
} // namespace mozilla::dom::indexedDB