feat: add texture pack parsing

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

launcher/minecraft/mod/tasks/LocalTexturePackParseTask.cpp

@@ -0,0 +1,154 @@
+// 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 "LocalTexturePackParseTask.h"
+
+#include "FileSystem.h"
+
+#include <quazip/quazip.h>
+#include <quazip/quazipfile.h>
+
+#include <QCryptographicHash>
+
+namespace TexturePackUtils {
+
+bool process(TexturePack& pack)
+{
+    switch (pack.type()) {
+        case ResourceType::FOLDER:
+            TexturePackUtils::processFolder(pack);
+            return true;
+        case ResourceType::ZIPFILE:
+            TexturePackUtils::processZIP(pack);
+            return true;
+        default:
+            qWarning() << "Invalid type for resource pack parse task!";
+            return false;
+    }
+}
+
+void processFolder(TexturePack& pack)
+{
+    Q_ASSERT(pack.type() == ResourceType::FOLDER);
+
+    QFileInfo mcmeta_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.txt"));
+    if (mcmeta_file_info.isFile()) {
+        QFile mcmeta_file(mcmeta_file_info.filePath());
+        if (!mcmeta_file.open(QIODevice::ReadOnly))
+            return;
+
+        auto data = mcmeta_file.readAll();
+
+        TexturePackUtils::processPackTXT(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();
+
+        TexturePackUtils::processPackPNG(pack, std::move(data));
+
+        mcmeta_file.close();
+    }
+}
+
+void processZIP(TexturePack& 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.txt")) {
+        if (!file.open(QIODevice::ReadOnly)) {
+            qCritical() << "Failed to open file in zip.";
+            zip.close();
+            return;
+        }
+
+        auto data = file.readAll();
+
+        TexturePackUtils::processPackTXT(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();
+
+        TexturePackUtils::processPackPNG(pack, std::move(data));
+
+        file.close();
+    }
+
+    zip.close();
+}
+
+void processPackTXT(TexturePack& pack, QByteArray&& raw_data)
+{
+    pack.setDescription(QString(raw_data));
+}
+
+void processPackPNG(TexturePack& pack, QByteArray&& raw_data)
+{
+    auto img = QImage::fromData(raw_data);
+    if (!img.isNull()) {
+        pack.setImage(img);
+    } else {
+        qWarning() << "Failed to parse pack.png.";
+    }
+}
+}  // namespace TexturePackUtils
+
+LocalTexturePackParseTask::LocalTexturePackParseTask(int token, TexturePack& rp)
+    : Task(nullptr, false), m_token(token), m_resource_pack(rp)
+{}
+
+bool LocalTexturePackParseTask::abort()
+{
+    m_aborted = true;
+    return true;
+}
+
+void LocalTexturePackParseTask::executeTask()
+{
+    Q_ASSERT(m_resource_pack.valid());
+
+    if (!TexturePackUtils::process(m_resource_pack))
+        return;
+
+    if (m_aborted)
+        emitAborted();
+    else
+        emitSucceeded();
+}