core/log: add filesystem logger

src/core/paths.hpp

@@ -0,0 +1,27 @@
+#pragma once
+#include <qdir.h>
+
+class QsPaths {
+public:
+	static QsPaths* instance();
+	static void init(QString shellId);
+
+	QDir* cacheDir();
+	QDir* runDir();
+	QDir* instanceRunDir();
+
+private:
+	enum class DirState {
+		Unknown = 0,
+		Ready = 1,
+		Failed = 2,
+	};
+
+	QString shellId;
+	QDir mCacheDir;
+	QDir mRunDir;
+	QDir mInstanceRunDir;
+	DirState cacheState = DirState::Unknown;
+	DirState runState = DirState::Unknown;
+	DirState instanceRunState = DirState::Unknown;
+};