gecko-dev/dom/file/ArchiveEvent.cpp

144 lines
3.1 KiB
C++

/* -*- 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 "ArchiveEvent.h"
#include "nsContentUtils.h"
#include "nsCExternalHandlerService.h"
#include "nsProxyRelease.h"
USING_FILE_NAMESPACE
NS_IMPL_THREADSAFE_ISUPPORTS0(ArchiveItem)
ArchiveItem::ArchiveItem()
{
MOZ_COUNT_CTOR(ArchiveItem);
}
ArchiveItem::~ArchiveItem()
{
MOZ_COUNT_DTOR(ArchiveItem);
}
nsCString
ArchiveItem::GetType()
{
if (mType.IsEmpty()) {
return NS_LITERAL_CSTRING("binary/octet-stream");
}
return mType;
}
void
ArchiveItem::SetType(const nsCString& aType)
{
mType = aType;
}
ArchiveReaderEvent::ArchiveReaderEvent(ArchiveReader* aArchiveReader)
: mArchiveReader(aArchiveReader)
{
MOZ_COUNT_CTOR(ArchiveReaderEvent);
}
ArchiveReaderEvent::~ArchiveReaderEvent()
{
if (!NS_IsMainThread()) {
nsIMIMEService* mimeService;
mMimeService.forget(&mimeService);
if (mimeService) {
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
NS_WARN_IF_FALSE(mainThread, "Couldn't get the main thread! Leaking!");
if (mainThread) {
NS_ProxyRelease(mainThread, mimeService);
}
}
}
MOZ_COUNT_DTOR(ArchiveReaderEvent);
}
// From the filename to the mimetype:
nsresult
ArchiveReaderEvent::GetType(nsCString& aExt,
nsCString& aMimeType)
{
MOZ_ASSERT(NS_IsMainThread());
nsresult rv;
if (mMimeService.get() == nullptr) {
mMimeService = do_GetService(NS_MIMESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = mMimeService->GetTypeFromExtension(aExt, aMimeType);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
ArchiveReaderEvent::Run()
{
return Exec();
}
nsresult
ArchiveReaderEvent::RunShare(nsresult aStatus)
{
mStatus = aStatus;
nsCOMPtr<nsIRunnable> event = NS_NewRunnableMethod(this, &ArchiveReaderEvent::ShareMainThread);
NS_DispatchToMainThread(event, NS_DISPATCH_NORMAL);
return NS_OK;
}
void
ArchiveReaderEvent::ShareMainThread()
{
nsTArray<nsCOMPtr<nsIDOMFile> > fileList;
if (!NS_FAILED(mStatus)) {
// This extra step must run in the main thread:
for (uint32_t index = 0; index < mFileList.Length(); ++index) {
nsRefPtr<ArchiveItem> item = mFileList[index];
nsString tmp;
nsresult rv = item->GetFilename(tmp);
nsCString filename = NS_ConvertUTF16toUTF8(tmp);
if (NS_FAILED(rv)) {
continue;
}
int32_t offset = filename.RFindChar('.');
if (offset != kNotFound) {
filename.Cut(0, offset + 1);
// Just to be sure, if something goes wrong, the mimetype is an empty string:
nsCString type;
if (NS_SUCCEEDED(GetType(filename, type))) {
item->SetType(type);
}
}
// This is a nsDOMFile:
nsRefPtr<nsIDOMFile> file = item->File(mArchiveReader);
if (file) {
fileList.AppendElement(file);
}
}
}
mArchiveReader->Ready(fileList, mStatus);
}