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Telegram/SourceFiles/core/launcher.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "core/base_integration.h"
+
+namespace Core {
+
+extern const char kOptionFractionalScalingEnabled[];
+extern const char kOptionFreeType[];
+
+class Launcher {
+public:
+	Launcher(int argc, char *argv[]);
+
+	static std::unique_ptr<Launcher> Create(int argc, char *argv[]);
+
+	static Launcher &Instance() {
+		Expects(InstanceSetter::Instance != nullptr);
+
+		return *InstanceSetter::Instance;
+	}
+
+	virtual int exec();
+
+	const QStringList &arguments() const;
+	QString initialWorkingDir() const;
+	bool customWorkingDir() const;
+
+	uint64 installationTag() const;
+	QByteArray instanceHash() const;
+
+	bool checkPortableVersionFolder();
+	bool validateCustomWorkingDir();
+	void workingFolderReady();
+	void writeDebugModeSetting();
+	void writeInstallBetaVersionsSetting();
+
+	virtual ~Launcher();
+
+protected:
+	enum class UpdaterLaunch {
+		PerformUpdate,
+		JustRelaunch,
+	};
+
+private:
+	void prepareSettings();
+	void initQtMessageLogging();
+	void processArguments();
+
+	QStringList readArguments(int argc, char *argv[]) const;
+	virtual std::optional<QStringList> readArgumentsHook(
+			int argc,
+			char *argv[]) const {
+		return std::nullopt;
+	}
+
+	void init();
+	virtual void initHook() {
+	}
+	virtual void initHighDpi();
+
+	virtual bool launchUpdater(UpdaterLaunch action) = 0;
+
+	int executeApplication();
+
+	struct InstanceSetter {
+		InstanceSetter(not_null<Launcher*> instance) {
+			Expects(Instance == nullptr);
+
+			Instance = instance;
+		}
+
+		static Launcher *Instance;
+	};
+	InstanceSetter _setter = { this };
+
+	int _argc;
+	char **_argv;
+	QStringList _arguments;
+	BaseIntegration _baseIntegration;
+
+	QString _initialWorkingDir;
+	QString _customWorkingDir;
+
+};
+
+} // namespace Core