1 files changed, 164 insertions, 0 deletions
diff --git a/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp
new file mode 100644
index 00000000..4f87bc13
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp
@@ -0,0 +1,164 @@
+// 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();
+}