daemon: make possible to set datadir before init

Signed-off-by: R4SAS <r4sas@i2pmail.org>

daemon/Daemon.cpp

@@ -64,6 +64,12 @@ namespace util
 		return service;
 	}
 
+	void Daemon_Singleton::setDataDir(std::string path)
+	{
+		if (path != "")
+			DaemonDataDir = path;
+	}
+
 	bool Daemon_Singleton::init(int argc, char* argv[]) {
 		return init(argc, argv, nullptr);
 	}
@@ -74,7 +80,13 @@ namespace util
 		i2p::config::ParseCmdline(argc, argv);
 
 		std::string config;  i2p::config::GetOption("conf", config);
-		std::string datadir; i2p::config::GetOption("datadir", datadir);
+		std::string datadir;
+		if(DaemonDataDir != "") {
+			datadir = DaemonDataDir;
+		} else {
+			i2p::config::GetOption("datadir", datadir);
+		}
+
 		i2p::fs::DetectDataDir(datadir, IsService());
 		i2p::fs::Init();
 

daemon/Daemon.h

@@ -28,6 +28,8 @@ namespace util
 		virtual bool stop ();
 		virtual void run () {};
 
+		virtual void setDataDir (std::string path);
+
 		bool isDaemon;
 		bool running;
 
@@ -41,6 +43,10 @@ namespace util
 		// d-pointer for httpServer, httpProxy, etc.
 		class Daemon_Singleton_Private;
 		Daemon_Singleton_Private &d;
+
+	private:
+
+		std::string DaemonDataDir;
 	};
 
 #if defined(QT_GUI_LIB) // check if QT