The Tor Browser: dom/file/ArchiveReader.cpp@6474c204b198 (annotated)

dom/file/ArchiveReader.cpp@6474c204b198 (annotated)

dom/file/ArchiveReader.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=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 "ArchiveReader.h"
 #include "ArchiveRequest.h"
 #include "ArchiveEvent.h"
 #include "ArchiveZipEvent.h"
 #include "nsIURI.h"
 #include "nsNetUtil.h"
 #include "mozilla/dom/ArchiveReaderBinding.h"
 #include "mozilla/dom/BindingDeclarations.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/EncodingUtils.h"
 using namespace mozilla;
 using namespace mozilla::dom;
 USING_FILE_NAMESPACE
 /* static */ already_AddRefed<ArchiveReader>
 ArchiveReader::Constructor(const GlobalObject& aGlobal,
                            nsIDOMBlob* aBlob,
                            const ArchiveReaderOptions& aOptions,
                            ErrorResult& aError)
 {
   MOZ_ASSERT(aBlob);
   nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
   if (!window) {
     aError.Throw(NS_ERROR_UNEXPECTED);
     return nullptr;
   }
   nsAutoCString encoding;
   if (!EncodingUtils::FindEncodingForLabel(aOptions.mEncoding, encoding) ||
       encoding.EqualsLiteral("replacement")) {
     aError.ThrowTypeError(MSG_ENCODING_NOT_SUPPORTED, &aOptions.mEncoding);
     return nullptr;
   }
   nsRefPtr<ArchiveReader> reader =
     new ArchiveReader(aBlob, window, encoding);
   return reader.forget();
 }
 ArchiveReader::ArchiveReader(nsIDOMBlob* aBlob, nsPIDOMWindow* aWindow,
                              const nsACString& aEncoding)
   : mBlob(aBlob)
   , mWindow(aWindow)
   , mStatus(NOT_STARTED)
   , mEncoding(aEncoding)
 {
   MOZ_ASSERT(aBlob);
   MOZ_ASSERT(aWindow);
   SetIsDOMBinding();
 }
 ArchiveReader::~ArchiveReader()
 {
 }
 /* virtual */ JSObject*
 ArchiveReader::WrapObject(JSContext* aCx)
 {
   return ArchiveReaderBinding::Wrap(aCx, this);
 }
 nsresult
 ArchiveReader::RegisterRequest(ArchiveRequest* aRequest)
 {
   switch (mStatus) {
     // Append to the list and let's start to work:
     case NOT_STARTED:
       mRequests.AppendElement(aRequest);
       return OpenArchive();
     // Just append to the list:
     case WORKING:
       mRequests.AppendElement(aRequest);
       return NS_OK;
     // Return data!
     case READY:
       RequestReady(aRequest);
       return NS_OK;
   }
   NS_ASSERTION(false, "unexpected mStatus value");
   return NS_OK;
 }
 // This returns the input stream
 nsresult
 ArchiveReader::GetInputStream(nsIInputStream** aInputStream)
 {
   // Getting the input stream
   mBlob->GetInternalStream(aInputStream);
   NS_ENSURE_TRUE(*aInputStream, NS_ERROR_UNEXPECTED);
   return NS_OK;
 }
 nsresult
 ArchiveReader::GetSize(uint64_t* aSize)
 {
   nsresult rv = mBlob->GetSize(aSize);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 // Here we open the archive:
 nsresult
 ArchiveReader::OpenArchive()
 {
   mStatus = WORKING;
   nsresult rv;
   // Target:
   nsCOMPtr<nsIEventTarget> target = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
   NS_ASSERTION(target, "Must have stream transport service");
   // Here a Event to make everything async:
   nsRefPtr<ArchiveReaderEvent> event;
   /* FIXME: If we want to support more than 1 format we should check the content type here: */
   event = new ArchiveReaderZipEvent(this, mEncoding);
   rv = target->Dispatch(event, NS_DISPATCH_NORMAL);
   NS_ENSURE_SUCCESS(rv, rv);
   // In order to be sure that this object exists when the event finishes its task,
   // we increase the refcount here:
   AddRef();
   return NS_OK;
 }
 // Data received from the dispatched event:
 void
 ArchiveReader::Ready(nsTArray<nsCOMPtr<nsIDOMFile> >& aFileList,
                      nsresult aStatus)
 {
   mStatus = READY;
   // Let's store the values:
   mData.fileList = aFileList;
   mData.status = aStatus;
   // Propagate the results:
   for (uint32_t index = 0; index < mRequests.Length(); ++index) {
     nsRefPtr<ArchiveRequest> request = mRequests[index];
     RequestReady(request);
   }
   mRequests.Clear();
   // The async operation is concluded, we can decrease the reference:
   Release();
 }
 void
 ArchiveReader::RequestReady(ArchiveRequest* aRequest)
 {
   // The request will do the rest:
   aRequest->ReaderReady(mData.fileList, mData.status);
 }
 already_AddRefed<ArchiveRequest>
 ArchiveReader::GetFilenames()
 {
   nsRefPtr<ArchiveRequest> request = GenerateArchiveRequest();
   request->OpGetFilenames();
   return request.forget();
 }
 already_AddRefed<ArchiveRequest>
 ArchiveReader::GetFile(const nsAString& filename)
 {
   nsRefPtr<ArchiveRequest> request = GenerateArchiveRequest();
   request->OpGetFile(filename);
   return request.forget();
 }
 already_AddRefed<ArchiveRequest>
 ArchiveReader::GetFiles()
 {
   nsRefPtr<ArchiveRequest> request = GenerateArchiveRequest();
   request->OpGetFiles();
   return request.forget();
 }
 already_AddRefed<ArchiveRequest>
 ArchiveReader::GenerateArchiveRequest()
 {
   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
   return ArchiveRequest::Create(mWindow, this);
 }
 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_4(ArchiveReader,
                                         mBlob,
                                         mWindow,
                                         mData.fileList,
                                         mRequests)
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ArchiveReader)
   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
   NS_INTERFACE_MAP_ENTRY(nsISupports)
 NS_INTERFACE_MAP_END
 NS_IMPL_CYCLE_COLLECTING_ADDREF(ArchiveReader)
 NS_IMPL_CYCLE_COLLECTING_RELEASE(ArchiveReader)

The Tor Browser / annotate

dom/file/ArchiveReader.cpp@6474c204b198 (annotated)

dom/file/ArchiveReader.cpp