pollymc/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp

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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
*
* 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.
*
* 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 "LocalResourcePackParseTask.h"
#include "FileSystem.h"
#include "Json.h"
#include <quazip/quazip.h>
#include <quazip/quazipfile.h>
#include <QCryptographicHash>
namespace ResourcePackUtils {
bool process(ResourcePack& pack)
{
switch (pack.type()) {
case ResourceType::FOLDER:
ResourcePackUtils::processFolder(pack);
return true;
case ResourceType::ZIPFILE:
ResourcePackUtils::processZIP(pack);
return true;
default:
qWarning() << "Invalid type for resource pack parse task!";
return false;
}
}
void processFolder(ResourcePack& pack)
{
Q_ASSERT(pack.type() == ResourceType::FOLDER);
QFileInfo mcmeta_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.mcmeta"));
if (mcmeta_file_info.isFile()) {
QFile mcmeta_file(mcmeta_file_info.filePath());
if (!mcmeta_file.open(QIODevice::ReadOnly))
return;
auto data = mcmeta_file.readAll();
ResourcePackUtils::processMCMeta(pack, std::move(data));
mcmeta_file.close();
}
QFileInfo image_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.png"));
if (image_file_info.isFile()) {
QFile mcmeta_file(image_file_info.filePath());
if (!mcmeta_file.open(QIODevice::ReadOnly))
return;
auto data = mcmeta_file.readAll();
ResourcePackUtils::processPackPNG(pack, std::move(data));
mcmeta_file.close();
}
}
void processZIP(ResourcePack& pack)
{
Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
QuaZip zip(pack.fileinfo().filePath());
if (!zip.open(QuaZip::mdUnzip))
return;
QuaZipFile file(&zip);
if (zip.setCurrentFile("pack.mcmeta")) {
if (!file.open(QIODevice::ReadOnly)) {
qCritical() << "Failed to open file in zip.";
zip.close();
return;
}
auto data = file.readAll();
ResourcePackUtils::processMCMeta(pack, std::move(data));
file.close();
}
if (zip.setCurrentFile("pack.png")) {
if (!file.open(QIODevice::ReadOnly)) {
qCritical() << "Failed to open file in zip.";
zip.close();
return;
}
auto data = file.readAll();
ResourcePackUtils::processPackPNG(pack, std::move(data));
file.close();
}
zip.close();
}
// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
void processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
{
try {
auto json_doc = QJsonDocument::fromJson(raw_data);
auto pack_obj = Json::requireObject(json_doc.object(), "pack", {});
pack.setPackFormat(Json::ensureInteger(pack_obj, "pack_format", 0));
pack.setDescription(Json::ensureString(pack_obj, "description", ""));
} catch (Json::JsonException& e) {
qWarning() << "JsonException: " << e.what() << e.cause();
}
}
void processPackPNG(ResourcePack& pack, QByteArray&& raw_data)
{
auto img = QImage::fromData(raw_data);
if (!img.isNull()) {
pack.setImage(img);
} else {
qWarning() << "Failed to parse pack.png.";
}
}
} // namespace ResourcePackUtils
LocalResourcePackParseTask::LocalResourcePackParseTask(int token, ResourcePack& rp)
: Task(nullptr, false), m_token(token), m_resource_pack(rp)
{}
bool LocalResourcePackParseTask::abort()
{
m_aborted = true;
return true;
}
void LocalResourcePackParseTask::executeTask()
{
// Q_ASSERT(m_resource_pack.valid());
if (!ResourcePackUtils::process(m_resource_pack))
return;
if (m_aborted)
emitAborted();
else
emitSucceeded();
}