efa414c442
Let's move off our custom QuaZip. In the olden times we needed the custom version of QuaZip, as it was basically unmaintained and on SourceForge (eww). But nowadays it's maintained and on GitHub. See new GitHub page: https://github.com/stachenov/quazip
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/* Copyright 2013-2021 MultiMC Contributors
|
|
*
|
|
* Authors: Orochimarufan <orochimarufan.x3@gmail.com>
|
|
*
|
|
* 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 "classfile.h"
|
|
#include "classparser.h"
|
|
|
|
#include <QFile>
|
|
#include <QuaZip-Qt5-1.2/quazip/quazipfile.h>
|
|
#include <QDebug>
|
|
|
|
namespace classparser
|
|
{
|
|
|
|
QString GetMinecraftJarVersion(QString jarName)
|
|
{
|
|
QString version;
|
|
|
|
// check if minecraft.jar exists
|
|
QFile jar(jarName);
|
|
if (!jar.exists())
|
|
return version;
|
|
|
|
// open minecraft.jar
|
|
QuaZip zip(&jar);
|
|
if (!zip.open(QuaZip::mdUnzip))
|
|
return version;
|
|
|
|
// open Minecraft.class
|
|
zip.setCurrentFile("net/minecraft/client/Minecraft.class", QuaZip::csSensitive);
|
|
QuaZipFile Minecraft(&zip);
|
|
if (!Minecraft.open(QuaZipFile::ReadOnly))
|
|
return version;
|
|
|
|
// read Minecraft.class
|
|
qint64 size = Minecraft.size();
|
|
char *classfile = new char[size];
|
|
Minecraft.read(classfile, size);
|
|
|
|
// parse Minecraft.class
|
|
try
|
|
{
|
|
char *temp = classfile;
|
|
java::classfile MinecraftClass(temp, size);
|
|
java::constant_pool constants = MinecraftClass.constants;
|
|
for (java::constant_pool::container_type::const_iterator iter = constants.begin();
|
|
iter != constants.end(); iter++)
|
|
{
|
|
const java::constant &constant = *iter;
|
|
if (constant.type != java::constant_type_t::j_string_data)
|
|
continue;
|
|
const std::string &str = constant.str_data;
|
|
qDebug() << QString::fromStdString(str);
|
|
if (str.compare(0, 20, "Minecraft Minecraft ") == 0)
|
|
{
|
|
version = str.substr(20).data();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
catch (const java::classfile_exception &) { }
|
|
|
|
// clean up
|
|
delete[] classfile;
|
|
Minecraft.close();
|
|
zip.close();
|
|
jar.close();
|
|
|
|
return version;
|
|
}
|
|
}
|