MultiMC5/launcher/minecraft/launch/ModMinecraftJar.cpp

83 lines
2.5 KiB
C++

/* 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 "ModMinecraftJar.h"
#include "launch/LaunchTask.h"
#include "MMCZip.h"
#include "minecraft/OpSys.h"
#include "FileSystem.h"
#include "minecraft/MinecraftInstance.h"
#include "minecraft/PackProfile.h"
void ModMinecraftJar::executeTask()
{
auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
if(!m_inst->getJarMods().size())
{
emitSucceeded();
return;
}
// nuke obsolete stripped jar(s) if needed
if(!FS::ensureFolderPathExists(m_inst->binRoot()))
{
emitFailed(tr("Couldn't create the bin folder for Minecraft.jar"));
}
auto finalJarPath = QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
if(!removeJar())
{
emitFailed(tr("Couldn't remove stale jar file: %1").arg(finalJarPath));
}
// create temporary modded jar, if needed
auto components = m_inst->getPackProfile();
auto profile = components->getProfile();
auto jarMods = m_inst->getJarMods();
if(jarMods.size())
{
auto mainJar = profile->getMainJar();
QStringList jars, temp1, temp2, temp3, temp4;
mainJar->getApplicableFiles(currentSystem, jars, temp1, temp2, temp3, m_inst->getLocalLibraryPath());
auto sourceJarPath = jars[0];
if(!MMCZip::createModdedJar(sourceJarPath, finalJarPath, jarMods))
{
emitFailed(tr("Failed to create the custom Minecraft jar file."));
return;
}
}
emitSucceeded();
}
void ModMinecraftJar::finalize()
{
removeJar();
}
bool ModMinecraftJar::removeJar()
{
auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
auto finalJarPath = QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
QFile finalJar(finalJarPath);
if(finalJar.exists())
{
if(!finalJar.remove())
{
return false;
}
}
return true;
}