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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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/>.
*/
#include "JavaVersion.h"
#include <MMCStrings.h>
#include <QRegularExpression>
#include <QString>
JavaVersion & JavaVersion::operator=(const QString & javaVersionString)
{
m_string = javaVersionString;
auto getCapturedInteger = [](const QRegularExpressionMatch & match, const QString &what) -> int
{
auto str = match.captured(what);
if(str.isEmpty())
{
return 0;
}
return str.toInt();
};
QRegularExpression pattern;
if(javaVersionString.startsWith("1."))
{
pattern = QRegularExpression ("1[.](?<major>[0-9]+)([.](?<minor>[0-9]+))?(_(?<security>[0-9]+)?)?(-(?<prerelease>[a-zA-Z0-9]+))?");
}
else
{
pattern = QRegularExpression("(?<major>[0-9]+)([.](?<minor>[0-9]+))?([.](?<security>[0-9]+))?(-(?<prerelease>[a-zA-Z0-9]+))?");
}
auto match = pattern.match(m_string);
m_parseable = match.hasMatch();
m_major = getCapturedInteger(match, "major");
m_minor = getCapturedInteger(match, "minor");
m_security = getCapturedInteger(match, "security");
m_prerelease = match.captured("prerelease");
return *this;
}
JavaVersion::JavaVersion(const QString &rhs)
{
operator=(rhs);
}
QString JavaVersion::toString()
{
return m_string;
}
bool JavaVersion::requiresPermGen()
{
if(m_parseable)
{
return m_major < 8;
}
return true;
}
bool JavaVersion::operator<(const JavaVersion &rhs) const
{
if(m_parseable && rhs.m_parseable)
{
auto major = m_major;
auto rmajor = rhs.m_major;
// HACK: discourage using java 9
if(major > 8)
major = -major;
if(rmajor > 8)
rmajor = -rmajor;
if(major < rmajor)
return true;
if(major > rmajor)
return false;
if(m_minor < rhs.m_minor)
return true;
if(m_minor > rhs.m_minor)
return false;
if(m_security < rhs.m_security)
return true;
if(m_security > rhs.m_security)
return false;
// everything else being equal, consider prerelease status
bool thisPre = !m_prerelease.isEmpty();
bool rhsPre = !rhs.m_prerelease.isEmpty();
if(thisPre && !rhsPre)
{
// this is a prerelease and the other one isn't -> lesser
return true;
}
else if(!thisPre && rhsPre)
{
// this isn't a prerelease and the other one is -> greater
return false;
}
else if(thisPre && rhsPre)
{
// both are prereleases - use natural compare...
return Strings::naturalCompare(m_prerelease, rhs.m_prerelease, Qt::CaseSensitive) < 0;
}
// neither is prerelease, so they are the same -> this cannot be less than rhs
return false;
}
else return Strings::naturalCompare(m_string, rhs.m_string, Qt::CaseSensitive) < 0;
}
bool JavaVersion::operator==(const JavaVersion &rhs) const
{
if(m_parseable && rhs.m_parseable)
{
return m_major == rhs.m_major && m_minor == rhs.m_minor && m_security == rhs.m_security && m_prerelease == rhs.m_prerelease;
}
return m_string == rhs.m_string;
}
bool JavaVersion::operator>(const JavaVersion &rhs) const
{
return (!operator<(rhs)) && (!operator==(rhs));
}
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