Sylvestre Ledru
9eb1a31a98
replaced by .editorconfig # ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D287843
113 lines
4.0 KiB
C++
113 lines
4.0 KiB
C++
/* 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 "mozilla/dom/DecompressionStream.h"
|
|
|
|
#include "BaseAlgorithms.h"
|
|
#include "FormatBrotli.h"
|
|
#include "FormatZlib.h"
|
|
#include "FormatZstd.h"
|
|
#include "js/TypeDecls.h"
|
|
#include "mozilla/StaticPrefs_dom.h"
|
|
#include "mozilla/dom/CompressionStreamBinding.h"
|
|
#include "mozilla/dom/DecompressionStreamBinding.h"
|
|
#include "mozilla/dom/ReadableStream.h"
|
|
#include "mozilla/dom/TextDecoderStream.h"
|
|
#include "mozilla/dom/TransformStream.h"
|
|
#include "mozilla/dom/UnionTypes.h"
|
|
#include "mozilla/dom/WritableStream.h"
|
|
|
|
namespace mozilla::dom {
|
|
using namespace compression;
|
|
|
|
/*
|
|
* Constructs either a ZLibDecompressionStreamAlgorithms or a
|
|
* Brotli/ZstdDecompressionStreamAlgorithms, based on the CompressionFormat.
|
|
*/
|
|
static Result<already_AddRefed<DecompressionStreamAlgorithms>, nsresult>
|
|
CreateDecompressionStreamAlgorithms(CompressionFormat aFormat) {
|
|
if (aFormat == CompressionFormat::Brotli) {
|
|
RefPtr<DecompressionStreamAlgorithms> brotliAlgos =
|
|
MOZ_TRY(BrotliDecompressionStreamAlgorithms::Create());
|
|
return brotliAlgos.forget();
|
|
}
|
|
if (aFormat == CompressionFormat::Zstd) {
|
|
RefPtr<DecompressionStreamAlgorithms> zstdAlgos =
|
|
MOZ_TRY(ZstdDecompressionStreamAlgorithms::Create());
|
|
return zstdAlgos.forget();
|
|
}
|
|
|
|
RefPtr<DecompressionStreamAlgorithms> zlibAlgos =
|
|
MOZ_TRY(ZLibDecompressionStreamAlgorithms::Create(aFormat));
|
|
return zlibAlgos.forget();
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DecompressionStream, mGlobal, mStream)
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(DecompressionStream)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(DecompressionStream)
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DecompressionStream)
|
|
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
DecompressionStream::DecompressionStream(nsISupports* aGlobal,
|
|
TransformStream& aStream)
|
|
: mGlobal(aGlobal), mStream(&aStream) {}
|
|
|
|
DecompressionStream::~DecompressionStream() = default;
|
|
|
|
JSObject* DecompressionStream::WrapObject(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) {
|
|
return DecompressionStream_Binding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
// https://wicg.github.io/compression/#dom-decompressionstream-decompressionstream
|
|
already_AddRefed<DecompressionStream> DecompressionStream::Constructor(
|
|
const GlobalObject& aGlobal, CompressionFormat aFormat, ErrorResult& aRv) {
|
|
if (aFormat == CompressionFormat::Zstd &&
|
|
aGlobal.CallerType() != CallerType::System &&
|
|
!StaticPrefs::dom_compression_streams_zstd_enabled()) {
|
|
aRv.ThrowTypeError(
|
|
"'zstd' (value of argument 1) is not a valid value for enumeration "
|
|
"CompressionFormat.");
|
|
return nullptr;
|
|
}
|
|
|
|
// Step 1: If format is unsupported in DecompressionStream, then throw a
|
|
// TypeError.
|
|
// XXX: Skipped as we are using enum for this
|
|
|
|
// Step 2 - 4: (Done in {ZLib|Zstd}DecompressionStreamAlgorithms)
|
|
|
|
// Step 5: Set this's transform to a new TransformStream.
|
|
|
|
// Step 6: Set up this's transform with transformAlgorithm set to
|
|
// transformAlgorithm and flushAlgorithm set to flushAlgorithm.
|
|
|
|
Result<already_AddRefed<DecompressionStreamAlgorithms>, nsresult> algorithms =
|
|
CreateDecompressionStreamAlgorithms(aFormat);
|
|
if (algorithms.isErr()) {
|
|
aRv.ThrowUnknownError("Not enough memory");
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<DecompressionStreamAlgorithms> alg = algorithms.unwrap();
|
|
RefPtr<TransformStream> stream =
|
|
TransformStream::CreateGeneric(aGlobal, *alg, aRv);
|
|
if (aRv.Failed()) {
|
|
return nullptr;
|
|
}
|
|
return do_AddRef(new DecompressionStream(aGlobal.GetAsSupports(), *stream));
|
|
}
|
|
|
|
already_AddRefed<ReadableStream> DecompressionStream::Readable() const {
|
|
return do_AddRef(mStream->Readable());
|
|
};
|
|
|
|
already_AddRefed<WritableStream> DecompressionStream::Writable() const {
|
|
return do_AddRef(mStream->Writable());
|
|
};
|
|
|
|
} // namespace mozilla::dom
|