pollymc/launcher/settings/INIFile.cpp

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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
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*
* 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.
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*
* 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.
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*/
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#include "settings/INIFile.h"
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#include <FileSystem.h>
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#include <QFile>
#include <QTextStream>
#include <QStringList>
#include <QSaveFile>
#include <QDebug>
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INIFile::INIFile()
{
}
QString INIFile::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 INIFile::escape(QString orig)
{
QString out;
for(auto c: orig)
{
if(c == '\n')
out += "\\n";
else if (c == '\t')
out += "\\t";
else if(c == '\\')
out += "\\\\";
else if(c == '#')
out += "\\#";
else
out += c;
}
return out;
}
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bool INIFile::saveFile(QString fileName)
{
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QByteArray outArray;
for (Iterator iter = begin(); iter != end(); iter++)
{
QString value = iter.value().toString();
value = escape(value);
outArray.append(iter.key().toUtf8());
outArray.append('=');
outArray.append(value.toUtf8());
outArray.append('\n');
}
try
{
FS::write(fileName, outArray);
}
catch (const Exception &e)
{
qCritical() << e.what();
return false;
}
return true;
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}
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bool INIFile::loadFile(QString fileName)
{
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QFile file(fileName);
if (!file.open(QIODevice::ReadOnly))
return false;
bool success = loadFile(file.readAll());
file.close();
return success;
}
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bool INIFile::loadFile(QByteArray file)
{
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QTextStream in(file);
#if QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
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in.setCodec("UTF-8");
#endif
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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();
}
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int eqPos = line.indexOf('=');
if (eqPos == -1)
continue;
QString key = line.left(eqPos).trimmed();
QString valueStr = line.right(line.length() - eqPos - 1).trimmed();
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valueStr = unescape(valueStr);
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QVariant value(valueStr);
this->operator[](key) = value;
}
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return true;
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}
QVariant INIFile::get(QString key, QVariant def) const
{
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if (!this->contains(key))
return def;
else
return this->operator[](key);
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}
void INIFile::set(QString key, QVariant val)
{
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this->operator[](key) = val;
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}