Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 155 insertions, 0 deletions

diff --git a/meshmc/launcher/modplatform/flame/PackManifest.cpp b/meshmc/launcher/modplatform/flame/PackManifest.cpp
new file mode 100644
index 0000000000..020370b29f
--- /dev/null
+++ b/meshmc/launcher/modplatform/flame/PackManifest.cpp
@@ -0,0 +1,155 @@
+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   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, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   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 "PackManifest.h"
+#include "Json.h"
+
+static void loadFileV1(Flame::File& f, QJsonObject& file)
+{
+	f.projectId = Json::requireInteger(file, "projectID");
+	f.fileId = Json::requireInteger(file, "fileID");
+	f.required = Json::ensureBoolean(file, QString("required"), true);
+}
+
+static void loadModloaderV1(Flame::Modloader& m, QJsonObject& modLoader)
+{
+	m.id = Json::requireString(modLoader, "id");
+	m.primary = Json::ensureBoolean(modLoader, QString("primary"), false);
+}
+
+static void loadMinecraftV1(Flame::Minecraft& m, QJsonObject& minecraft)
+{
+	m.version = Json::requireString(minecraft, "version");
+	// extra libraries... apparently only used for a custom Minecraft launcher
+	// in the 1.2.5 FTB retro pack intended use is likely hardcoded in the
+	// 'Flame' client, the manifest says nothing
+	m.libraries =
+		Json::ensureString(minecraft, QString("libraries"), QString());
+	auto arr = Json::ensureArray(minecraft, "modLoaders", QJsonArray());
+	for (QJsonValueRef item : arr) {
+		auto obj = Json::requireObject(item);
+		Flame::Modloader loader;
+		loadModloaderV1(loader, obj);
+		m.modLoaders.append(loader);
+	}
+}
+
+static void loadManifestV1(Flame::Manifest& m, QJsonObject& manifest)
+{
+	auto mc = Json::requireObject(manifest, "minecraft");
+	loadMinecraftV1(m.minecraft, mc);
+	m.name = Json::ensureString(manifest, QString("name"), "Unnamed");
+	m.version = Json::ensureString(manifest, QString("version"), QString());
+	m.author =
+		Json::ensureString(manifest, QString("author"), "Anonymous Coward");
+	auto arr = Json::ensureArray(manifest, "files", QJsonArray());
+	for (QJsonValueRef item : arr) {
+		auto obj = Json::requireObject(item);
+		Flame::File file;
+		loadFileV1(file, obj);
+		m.files.append(file);
+	}
+	m.overrides = Json::ensureString(manifest, "overrides", "overrides");
+}
+
+void Flame::loadManifest(Flame::Manifest& m, const QString& filepath)
+{
+	auto doc = Json::requireDocument(filepath);
+	auto obj = Json::requireObject(doc);
+	m.manifestType = Json::requireString(obj, "manifestType");
+	if (m.manifestType != "minecraftModpack") {
+		throw JSONValidationError("Not a modpack manifest!");
+	}
+	m.manifestVersion = Json::requireInteger(obj, "manifestVersion");
+	if (m.manifestVersion != 1) {
+		throw JSONValidationError(
+			QString("Unknown manifest version (%1)").arg(m.manifestVersion));
+	}
+	loadManifestV1(m, obj);
+}
+
+bool Flame::File::parseFromBytes(const QByteArray& bytes)
+{
+	auto doc = Json::requireDocument(bytes);
+	auto obj = Json::requireObject(doc);
+	// result code signifies true failure.
+	if (obj.contains("code")) {
+		qCritical() << "Resolving of" << projectId << fileId
+					<< "failed because of a negative result:";
+		qCritical() << bytes;
+		return false;
+	}
+	// CurseForge API v1 wraps the file object in "data"
+	if (obj.contains("data")) {
+		obj = Json::requireObject(obj, "data");
+	}
+	// Support both old cursemeta (FileNameOnDisk) and CurseForge API v1
+	// (fileName) field names
+	fileName = Json::ensureString(obj, "fileName", QString());
+	if (fileName.isEmpty()) {
+		fileName = Json::requireString(obj, "FileNameOnDisk");
+	}
+	QString rawUrl = Json::ensureString(obj, "downloadUrl", QString());
+	if (rawUrl.isEmpty()) {
+		rawUrl = Json::ensureString(obj, "DownloadURL", QString());
+	}
+	if (rawUrl.isEmpty()) {
+		// Mod has disabled third-party downloads — will be handled via browser
+		// download
+		qWarning() << "Mod" << projectId << fileId << "(" << fileName
+				   << ") has no download URL (restricted)."
+				   << "Will require browser download.";
+		resolved = false;
+		return true;
+	}
+	url = QUrl(rawUrl, QUrl::TolerantMode);
+	if (!url.isValid()) {
+		throw JSONValidationError(QString("Invalid URL: %1").arg(rawUrl));
+	}
+	// This is a piece of a Flame project JSON pulled out into the file metadata
+	// (here) for convenience It is also optional
+	QJsonObject projObj = Json::ensureObject(obj, "_Project", {});
+	if (!projObj.isEmpty()) {
+		QString strType =
+			Json::ensureString(projObj, "PackageType", "mod").toLower();
+		if (strType == "singlefile") {
+			type = File::Type::SingleFile;
+		} else if (strType == "ctoc") {
+			type = File::Type::Ctoc;
+		} else if (strType == "cmod2") {
+			type = File::Type::Cmod2;
+		} else if (strType == "mod") {
+			type = File::Type::Mod;
+		} else if (strType == "folder") {
+			type = File::Type::Folder;
+		} else if (strType == "modpack") {
+			type = File::Type::Modpack;
+		} else {
+			qCritical() << "Resolving of" << projectId << fileId
+						<< "failed because of unknown file type:" << strType;
+			type = File::Type::Unknown;
+			return false;
+		}
+		targetFolder = Json::ensureString(projObj, "Path", "mods");
+	}
+	resolved = true;
+	return true;
+}