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// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
* Copyright (C) 2023 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.
*/
#include "settings/INIFile.h"
#include <FileSystem.h>
#include <QFile>
#include <QTextStream>
#include <QStringList>
#include <QSaveFile>
#include <QDebug>
#include <QSettings>
INIFile::INIFile() {}
bool INIFile::saveFile(QString fileName)
{
if (!contains("ConfigVersion"))
insert("ConfigVersion", "1.2");
QSettings _settings_obj{ fileName, QSettings::Format::IniFormat };
_settings_obj.setFallbacksEnabled(false);
for (Iterator iter = begin(); iter != end(); iter++)
_settings_obj.setValue(iter.key(), iter.value());
_settings_obj.sync();
if (auto status = _settings_obj.status(); status != QSettings::Status::NoError) {
// Shouldn't be possible!
Q_ASSERT(status != QSettings::Status::FormatError);
if (status == QSettings::Status::AccessError)
qCritical() << "An access error occurred (e.g. trying to write to a read-only file).";
return false;
}
return true;
}
QString unescape(QString orig)
{
QString out;
QChar prev = QChar::Null;
for (auto c : orig) {
if (prev == '\\') {
if (c == 'n')
out += '\n';
else if (c == 't')
out += '\t';
else if (c == '#')
out += '#';
else
out += c;
prev = QChar::Null;
} else {
if (c == '\\') {
prev = c;
continue;
}
out += c;
prev = QChar::Null;
}
}
return out;
}
QString unquote(QString str)
{
if ((str.contains(QChar(';')) || str.contains(QChar('=')) || str.contains(QChar(','))) && str.endsWith("\"") && str.startsWith("\"")) {
#if QT_VERSION < QT_VERSION_CHECK(6, 5, 0)
str = str.remove(0, 1);
str = str.remove(str.size() - 1, 1);
#else
str = str.removeFirst().removeLast();
#endif
}
return str;
}
bool parseOldFileFormat(QIODevice& device, QSettings::SettingsMap& map)
{
QTextStream in(device.readAll());
#if QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
in.setCodec("UTF-8");
#endif
QStringList lines = in.readAll().split('\n');
for (int i = 0; i < lines.count(); i++) {
QString& lineRaw = lines[i];
// Ignore comments.
int commentIndex = 0;
QString line = lineRaw;
// Search for comments until no more escaped # are available
while ((commentIndex = line.indexOf('#', commentIndex + 1)) != -1) {
if (commentIndex > 0 && line.at(commentIndex - 1) == '\\') {
continue;
}
line = line.left(lineRaw.indexOf('#')).trimmed();
}
int eqPos = line.indexOf('=');
if (eqPos == -1)
continue;
QString key = line.left(eqPos).trimmed();
QString valueStr = line.right(line.length() - eqPos - 1).trimmed();
valueStr = unquote(unescape(valueStr));
QVariant value(valueStr);
map.insert(key, value);
}
return true;
}
bool INIFile::loadFile(QString fileName)
{
QSettings _settings_obj{ fileName, QSettings::Format::IniFormat };
_settings_obj.setFallbacksEnabled(false);
if (auto status = _settings_obj.status(); status != QSettings::Status::NoError) {
if (status == QSettings::Status::AccessError)
qCritical() << "An access error occurred (e.g. trying to write to a read-only file).";
if (status == QSettings::Status::FormatError)
qCritical() << "A format error occurred (e.g. loading a malformed INI file).";
return false;
}
if (!_settings_obj.value("ConfigVersion").isValid()) {
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly))
return false;
QSettings::SettingsMap map;
parseOldFileFormat(file, map);
file.close();
for (auto&& key : map.keys())
insert(key, map.value(key));
insert("ConfigVersion", "1.2");
} else if (_settings_obj.value("ConfigVersion").toString() == "1.1") {
for (auto&& key : _settings_obj.allKeys()) {
if (auto valueStr = _settings_obj.value(key).toString();
(valueStr.contains(QChar(';')) || valueStr.contains(QChar('=')) || valueStr.contains(QChar(','))) &&
valueStr.endsWith("\"") && valueStr.startsWith("\"")) {
insert(key, unquote(valueStr));
} else
insert(key, _settings_obj.value(key));
}
insert("ConfigVersion", "1.2");
} else
for (auto&& key : _settings_obj.allKeys())
insert(key, _settings_obj.value(key));
return true;
}
QVariant INIFile::get(QString key, QVariant def) const
{
if (!this->contains(key))
return def;
else
return this->operator[](key);
}
void INIFile::set(QString key, QVariant val)
{
this->operator[](key) = val;
}
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