зеркало из https://github.com/mozilla/gecko-dev.git
136 строки
4.0 KiB
C++
136 строки
4.0 KiB
C++
/* -*- 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FileStreams.h"
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#include "QuotaManager.h"
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#include "prio.h"
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USING_QUOTA_NAMESPACE
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template <class FileStreamBase>
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NS_IMETHODIMP
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FileQuotaStream<FileStreamBase>::SetEOF()
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{
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nsresult rv = FileStreamBase::SetEOF();
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NS_ENSURE_SUCCESS(rv, rv);
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if (mQuotaObject) {
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int64_t offset;
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nsresult rv = FileStreamBase::Tell(&offset);
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NS_ENSURE_SUCCESS(rv, rv);
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mQuotaObject->MaybeUpdateSize(offset, /* aTruncate */ true);
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}
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return NS_OK;
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}
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template <class FileStreamBase>
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NS_IMETHODIMP
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FileQuotaStream<FileStreamBase>::Close()
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{
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nsresult rv = FileStreamBase::Close();
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NS_ENSURE_SUCCESS(rv, rv);
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mQuotaObject = nullptr;
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return NS_OK;
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}
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template <class FileStreamBase>
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nsresult
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FileQuotaStream<FileStreamBase>::DoOpen()
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{
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QuotaManager* quotaManager = QuotaManager::Get();
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NS_ASSERTION(quotaManager, "Shouldn't be null!");
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NS_ASSERTION(!mQuotaObject, "Creating quota object more than once?");
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mQuotaObject = quotaManager->GetQuotaObject(mPersistenceType, mGroup, mOrigin,
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FileStreamBase::mOpenParams.localFile);
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nsresult rv = FileStreamBase::DoOpen();
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NS_ENSURE_SUCCESS(rv, rv);
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if (mQuotaObject && (FileStreamBase::mOpenParams.ioFlags & PR_TRUNCATE)) {
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mQuotaObject->MaybeUpdateSize(0, /* aTruncate */ true);
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}
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return NS_OK;
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}
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template <class FileStreamBase>
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NS_IMETHODIMP
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FileQuotaStreamWithWrite<FileStreamBase>::Write(const char* aBuf,
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uint32_t aCount,
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uint32_t* _retval)
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{
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nsresult rv;
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if (FileQuotaStreamWithWrite::mQuotaObject) {
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int64_t offset;
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rv = FileStreamBase::Tell(&offset);
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NS_ENSURE_SUCCESS(rv, rv);
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MOZ_ASSERT(INT64_MAX - offset >= int64_t(aCount));
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if (!FileQuotaStreamWithWrite::
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mQuotaObject->MaybeUpdateSize(offset + int64_t(aCount),
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/* aTruncate */ false)) {
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return NS_ERROR_FILE_NO_DEVICE_SPACE;
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}
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}
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rv = FileStreamBase::Write(aBuf, aCount, _retval);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMPL_ISUPPORTS_INHERITED0(FileInputStream, nsFileInputStream)
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already_AddRefed<FileInputStream>
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FileInputStream::Create(PersistenceType aPersistenceType,
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const nsACString& aGroup, const nsACString& aOrigin,
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nsIFile* aFile, int32_t aIOFlags, int32_t aPerm,
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int32_t aBehaviorFlags)
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{
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nsRefPtr<FileInputStream> stream =
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new FileInputStream(aPersistenceType, aGroup, aOrigin);
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nsresult rv = stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags);
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NS_ENSURE_SUCCESS(rv, nullptr);
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return stream.forget();
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}
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NS_IMPL_ISUPPORTS_INHERITED0(FileOutputStream, nsFileOutputStream)
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already_AddRefed<FileOutputStream>
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FileOutputStream::Create(PersistenceType aPersistenceType,
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const nsACString& aGroup, const nsACString& aOrigin,
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nsIFile* aFile, int32_t aIOFlags, int32_t aPerm,
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int32_t aBehaviorFlags)
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{
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nsRefPtr<FileOutputStream> stream =
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new FileOutputStream(aPersistenceType, aGroup, aOrigin);
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nsresult rv = stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags);
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NS_ENSURE_SUCCESS(rv, nullptr);
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return stream.forget();
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}
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NS_IMPL_ISUPPORTS_INHERITED0(FileStream, nsFileStream)
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already_AddRefed<FileStream>
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FileStream::Create(PersistenceType aPersistenceType, const nsACString& aGroup,
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const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags,
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int32_t aPerm, int32_t aBehaviorFlags)
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{
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nsRefPtr<FileStream> stream =
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new FileStream(aPersistenceType, aGroup, aOrigin);
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nsresult rv = stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags);
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NS_ENSURE_SUCCESS(rv, nullptr);
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return stream.forget();
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}
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