mirror of
https://github.com/classilla/tenfourfox.git
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218 lines
5.5 KiB
C++
218 lines
5.5 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ArchiveReader.h"
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#include "ArchiveRequest.h"
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#include "ArchiveEvent.h"
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#include "ArchiveZipEvent.h"
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#include "nsIURI.h"
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#include "nsNetCID.h"
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#include "mozilla/dom/ArchiveReaderBinding.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/EncodingUtils.h"
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#include "mozilla/Preferences.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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USING_ARCHIVEREADER_NAMESPACE
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/* static */ already_AddRefed<ArchiveReader>
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ArchiveReader::Constructor(const GlobalObject& aGlobal,
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Blob& aBlob,
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const ArchiveReaderOptions& aOptions,
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ErrorResult& aError)
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{
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nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
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if (!window) {
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aError.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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nsAutoCString encoding;
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if (!EncodingUtils::FindEncodingForLabelNoReplacement(aOptions.mEncoding,
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encoding)) {
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aError.ThrowRangeError<MSG_ENCODING_NOT_SUPPORTED>(aOptions.mEncoding);
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return nullptr;
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}
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RefPtr<ArchiveReader> reader =
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new ArchiveReader(aBlob, window, encoding);
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return reader.forget();
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}
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ArchiveReader::ArchiveReader(Blob& aBlob, nsPIDOMWindow* aWindow,
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const nsACString& aEncoding)
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: mBlobImpl(aBlob.Impl())
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, mWindow(aWindow)
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, mStatus(NOT_STARTED)
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, mEncoding(aEncoding)
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{
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MOZ_ASSERT(aWindow);
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}
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ArchiveReader::~ArchiveReader()
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{
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}
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/* virtual */ JSObject*
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ArchiveReader::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return ArchiveReaderBinding::Wrap(aCx, this, aGivenProto);
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}
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nsresult
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ArchiveReader::RegisterRequest(ArchiveRequest* aRequest)
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{
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switch (mStatus) {
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// Append to the list and let's start to work:
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case NOT_STARTED:
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mRequests.AppendElement(aRequest);
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return OpenArchive();
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// Just append to the list:
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case WORKING:
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mRequests.AppendElement(aRequest);
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return NS_OK;
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// Return data!
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case READY:
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RequestReady(aRequest);
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return NS_OK;
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}
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NS_ASSERTION(false, "unexpected mStatus value");
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return NS_OK;
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}
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// This returns the input stream
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nsresult
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ArchiveReader::GetInputStream(nsIInputStream** aInputStream)
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{
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// Getting the input stream
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ErrorResult rv;
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mBlobImpl->GetInternalStream(aInputStream, rv);
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if (NS_WARN_IF(rv.Failed())) {
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return rv.StealNSResult();
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}
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return NS_OK;
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}
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nsresult
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ArchiveReader::GetSize(uint64_t* aSize)
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{
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ErrorResult rv;
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*aSize = mBlobImpl->GetSize(rv);
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return rv.StealNSResult();
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}
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// Here we open the archive:
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nsresult
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ArchiveReader::OpenArchive()
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{
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mStatus = WORKING;
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nsresult rv;
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// Target:
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nsCOMPtr<nsIEventTarget> target = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
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NS_ASSERTION(target, "Must have stream transport service");
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// Here a Event to make everything async:
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RefPtr<ArchiveReaderEvent> event;
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/* FIXME: If we want to support more than 1 format we should check the content type here: */
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event = new ArchiveReaderZipEvent(this, mEncoding);
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rv = target->Dispatch(event, NS_DISPATCH_NORMAL);
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NS_ENSURE_SUCCESS(rv, rv);
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// In order to be sure that this object exists when the event finishes its task,
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// we increase the refcount here:
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AddRef();
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return NS_OK;
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}
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// Data received from the dispatched event:
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void
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ArchiveReader::Ready(nsTArray<RefPtr<File>>& aFileList,
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nsresult aStatus)
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{
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mStatus = READY;
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// Let's store the values:
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mData.fileList = aFileList;
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mData.status = aStatus;
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// Propagate the results:
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for (uint32_t index = 0; index < mRequests.Length(); ++index) {
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RefPtr<ArchiveRequest> request = mRequests[index];
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RequestReady(request);
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}
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mRequests.Clear();
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// The async operation is concluded, we can decrease the reference:
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Release();
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}
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void
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ArchiveReader::RequestReady(ArchiveRequest* aRequest)
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{
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// The request will do the rest:
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aRequest->ReaderReady(mData.fileList, mData.status);
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}
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already_AddRefed<ArchiveRequest>
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ArchiveReader::GetFilenames()
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{
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RefPtr<ArchiveRequest> request = GenerateArchiveRequest();
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request->OpGetFilenames();
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return request.forget();
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}
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already_AddRefed<ArchiveRequest>
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ArchiveReader::GetFile(const nsAString& filename)
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{
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RefPtr<ArchiveRequest> request = GenerateArchiveRequest();
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request->OpGetFile(filename);
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return request.forget();
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}
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already_AddRefed<ArchiveRequest>
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ArchiveReader::GetFiles()
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{
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RefPtr<ArchiveRequest> request = GenerateArchiveRequest();
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request->OpGetFiles();
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return request.forget();
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}
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already_AddRefed<ArchiveRequest>
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ArchiveReader::GenerateArchiveRequest()
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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return ArchiveRequest::Create(mWindow, this);
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}
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(ArchiveReader,
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mBlobImpl,
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mWindow,
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mData.fileList,
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mRequests)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ArchiveReader)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(ArchiveReader)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(ArchiveReader)
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