pollymc/launcher/net/ByteArraySink.h

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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "Sink.h"
namespace Net {
/*
* Sink object for downloads that uses an external QByteArray it doesn't own as a target.
* FIXME: It is possible that the QByteArray is freed while we're doing some operation on it,
* causing a segmentation fault.
*/
class ByteArraySink : public Sink {
public:
ByteArraySink(QByteArray* output) : m_output(output){};
virtual ~ByteArraySink() = default;
public:
auto init(QNetworkRequest& request) -> Task::State override
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{
m_output->clear();
if (initAllValidators(request))
return Task::State::Running;
return Task::State::Failed;
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};
auto write(QByteArray& data) -> Task::State override
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{
m_output->append(data);
if (writeAllValidators(data))
return Task::State::Running;
return Task::State::Failed;
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}
auto abort() -> Task::State override
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{
m_output->clear();
failAllValidators();
return Task::State::Failed;
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}
auto finalize(QNetworkReply& reply) -> Task::State override
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{
if (finalizeAllValidators(reply))
return Task::State::Succeeded;
return Task::State::Failed;
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}
auto hasLocalData() -> bool override { return false; }
private:
QByteArray* m_output;
};
} // namespace Net