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// SPDX-License-Identifier: GPL-3.0-only
// SPDX-FileCopyrightText: 2026 Project Tick
// SPDX-FileContributor: Project Tick Team
/*
* ProjT Launcher - Minecraft Launcher
* Copyright (C) 2026 Project Tick
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* === Upstream License Block (Do Not Modify) ==============================
*
*
*
* Prism Launcher - Minecraft Launcher
* Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* ======================================================================== */
#pragma once
#include <QFileInfo>
#include <QSaveFile>
#include "Application.h"
#if defined(LAUNCHER_APPLICATION)
/* PSaveFile
* A class that mimics QSaveFile for Windows.
*
* When reading resources, we need to avoid accessing temporary files
* generated by QSaveFile. If we start reading such a file, we may
* inadvertently keep it open while QSaveFile is trying to remove it,
* or we might detect the file just before it is removed, leading to
* race conditions and errors.
*
* Unfortunately, QSaveFile doesn't provide a way to retrieve the
* temporary file name or to set a specific template for the temporary
* file name it uses. By default, QSaveFile appends a `.XXXXXX` suffix
* to the original file name, where the `XXXXXX` part is dynamically
* generated to ensure uniqueness.
*
* This class acts like a lock by adding and removing the target file
* name into/from a global string set, helping to manage access to
* files during critical operations.
*
* Note: Please do not use the `setFileName` function directly, as it
* is not virtual and cannot be overridden.
*/
class PSaveFile : public QSaveFile
{
public:
PSaveFile(const QString& name) : QSaveFile(name)
{
addPath(name);
}
PSaveFile(const QString& name, QObject* parent) : QSaveFile(name, parent)
{
addPath(name);
}
virtual ~PSaveFile()
{
if (auto app = APPLICATION_DYN)
{
app->removeQSavePath(m_absoluteFilePath);
}
}
private:
void addPath(const QString& path)
{
m_absoluteFilePath = QFileInfo(path).absoluteFilePath() + "."; // add dot for tmp files only
if (auto app = APPLICATION_DYN)
{
app->addQSavePath(m_absoluteFilePath);
}
}
QString m_absoluteFilePath;
};
#else
#define PSaveFile QSaveFile
#endif
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