pollymc/logic/InstanceFactory.cpp

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/* Copyright 2013 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 "InstanceFactory.h"
#include <QDir>
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#include <QFileInfo>
#include "BaseInstance.h"
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#include "LegacyInstance.h"
#include "OneSixInstance.h"
#include "NostalgiaInstance.h"
#include "BaseVersion.h"
#include "MinecraftVersion.h"
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#include "inifile.h"
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#include <inisettingsobject.h>
#include <setting.h>
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#include "pathutils.h"
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#include <logger/QsLog.h>
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InstanceFactory InstanceFactory::loader;
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InstanceFactory::InstanceFactory() : QObject(NULL)
{
}
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InstanceFactory::InstLoadError InstanceFactory::loadInstance(BaseInstance *&inst,
const QString &instDir)
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{
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auto m_settings = new INISettingsObject(PathCombine(instDir, "instance.cfg"));
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m_settings->registerSetting(new Setting("InstanceType", "Legacy"));
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QString inst_type = m_settings->get("InstanceType").toString();
// FIXME: replace with a map lookup, where instance classes register their types
if (inst_type == "Legacy")
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{
inst = new LegacyInstance(instDir, m_settings, this);
}
else if (inst_type == "OneSix")
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{
inst = new OneSixInstance(instDir, m_settings, this);
}
else if (inst_type == "Nostalgia")
{
inst = new NostalgiaInstance(instDir, m_settings, this);
}
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else
{
return InstanceFactory::UnknownLoadError;
}
return NoLoadError;
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}
InstanceFactory::InstCreateError InstanceFactory::createInstance(BaseInstance *&inst,
BaseVersionPtr version,
const QString &instDir)
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{
QDir rootDir(instDir);
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QLOG_DEBUG() << instDir.toUtf8();
if (!rootDir.exists() && !rootDir.mkpath("."))
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{
return InstanceFactory::CantCreateDir;
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}
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auto mcVer = std::dynamic_pointer_cast<MinecraftVersion>(version);
if (!mcVer)
return InstanceFactory::NoSuchVersion;
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auto m_settings = new INISettingsObject(PathCombine(instDir, "instance.cfg"));
m_settings->registerSetting(new Setting("InstanceType", "Legacy"));
switch (mcVer->type)
{
case MinecraftVersion::Legacy:
m_settings->set("InstanceType", "Legacy");
inst = new LegacyInstance(instDir, m_settings, this);
inst->setIntendedVersionId(version->descriptor());
inst->setShouldUseCustomBaseJar(false);
break;
case MinecraftVersion::OneSix:
m_settings->set("InstanceType", "OneSix");
inst = new OneSixInstance(instDir, m_settings, this);
inst->setIntendedVersionId(version->descriptor());
inst->setShouldUseCustomBaseJar(false);
break;
case MinecraftVersion::Nostalgia:
m_settings->set("InstanceType", "Nostalgia");
inst = new NostalgiaInstance(instDir, m_settings, this);
inst->setIntendedVersionId(version->descriptor());
inst->setShouldUseCustomBaseJar(false);
break;
default:
{
delete m_settings;
return InstanceFactory::NoSuchVersion;
}
}
// FIXME: really, how do you even know?
return InstanceFactory::NoCreateError;
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}
InstanceFactory::InstCreateError InstanceFactory::copyInstance(BaseInstance *&newInstance,
BaseInstance *&oldInstance,
const QString &instDir)
{
QDir rootDir(instDir);
QLOG_DEBUG() << instDir.toUtf8();
if (!copyPath(oldInstance->instanceRoot(), instDir))
{
rootDir.removeRecursively();
return InstanceFactory::CantCreateDir;
}
auto error = loadInstance(newInstance, instDir);
switch(error)
{
case NoLoadError:
return NoCreateError;
case UnknownLoadError:
{
rootDir.removeRecursively();
return UnknownCreateError;
}
case NotAnInstance:
{
rootDir.removeRecursively();
return CantCreateDir;
}
};
}