зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
3.8 KiB
C++
119 строки
3.8 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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BEGIN_QUOTA_NAMESPACE
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template <class FileStreamBase>
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NS_IMETHODIMP FileQuotaStream<FileStreamBase>::SetEOF() {
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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 FileQuotaStream<FileStreamBase>::Close() {
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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 FileQuotaStream<FileStreamBase>::DoOpen() {
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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(
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mPersistenceType, mGroup, mOrigin, 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 FileQuotaStreamWithWrite<FileStreamBase>::Write(
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const char* aBuf, uint32_t aCount, uint32_t* _retval) {
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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::mQuotaObject->MaybeUpdateSize(
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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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already_AddRefed<FileInputStream> CreateFileInputStream(
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PersistenceType aPersistenceType, const nsACString& aGroup,
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const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags, int32_t aPerm,
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int32_t aBehaviorFlags) {
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RefPtr<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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already_AddRefed<FileOutputStream> CreateFileOutputStream(
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PersistenceType aPersistenceType, const nsACString& aGroup,
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const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags, int32_t aPerm,
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int32_t aBehaviorFlags) {
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RefPtr<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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already_AddRefed<FileStream> CreateFileStream(PersistenceType aPersistenceType,
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const nsACString& aGroup,
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const nsACString& aOrigin,
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nsIFile* aFile, int32_t aIOFlags,
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int32_t aPerm,
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int32_t aBehaviorFlags) {
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RefPtr<FileStream> stream = 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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END_QUOTA_NAMESPACE
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