C# Connector.RunOrDefault方法代码示例

        static void StartGui(Connector conn, Settings settings)
        {
            Gui.Start(x => {
            //if changes UI: have to use this
            Action<string, Action<CmdArg>> xRegister = (cmd, a) => conn.Register(cmd, x.InSTAThread(a));
            var help = @"Help:
            Type (messages) to line at bottom of window.
            Commands start with ':'.
            All messages are trimmed by default, so to write ':-)' just write ' :-)'.
            Use tab for command completion.

            :chat                    # show message board
            :server.start <port>     # starts server and DOES NOT connect to it
            :server.stop
            :ip                      # get local IP address(es)
            :wsdl                    # open server with wsdl description of service to access chans
            :connect <host:port>     # connect to a server; default port is " + settings.DefaultServerPort + @"
            :disconnect              # closes client
            :host <port>             # :server.start, :connect
            :join <host> <name>      # :connect <host>, :name <name>
            :name <new name>         # get or set; 'anon' by default
            :down, :d                # scroll to end of message board
            :exit, :quit
            :help, :h                # show this help
            :send <msg>              # send msg as it is; even just whitespace / nothing...
            :text <theText>          # ~= :send <trim($theText)>
                         # wouldn't send nothing

            if line doesn't start with ':': gets translated to: ':text <$line>'
            ";

            xRegister(Cmd.Help, _ => x.SwitchToHelp(help));
            xRegister(Cmd.Chat, _ => x.SwitchToChat());
            xRegister(Cmd.Exit, _ => x.Exit());
            xRegister(Cmd.ScrollDown, _ => x.ScrollToBottom());
            xRegister(Cmd.NotifyError, a => x.ShowError(a.Source, a.Text));
            xRegister(Cmd.NotifySystem, a => x.ShowNotifySystem(a.Source, a.Text));
            xRegister(Cmd.ReceivedMsg, a => x.ShowMessage(a.Source, a.Text));
            xRegister(Cmd.CmdAccepted, a => x.ClearCmdLineIfSame(a));
            xRegister(Cmd.CompletionResponse, a => x.PushCompletion(a, a.Source));

            conn.Alias("d", Cmd.ScrollDown);
            conn.Alias("h", Cmd.Help);
            conn.Alias("quit", Cmd.Exit);

            conn.Run(Cmd.Help);

            x.Command += line => conn.RunOrDefault(Cmd.CmdParseRun, line);
            x.CompletionRequest += line => conn.RunOrDefault(Cmd.CompletionRequest, line);
            x.BoardChanged += () => conn.Run(Cmd.Chat);

            conn.RunOrDefault(Cmd.AfterGuiLoaded);
              });
        }

        static void Init(Settings settings, Connector conn, Action<Connector, ChanStore> initExtra)
        {
            var store = new ChanStore();
              var client = new ChatClient(settings, store, conn);

              //simple default config for now
              var dfltCfg = NetChanConfig.MakeDefault<Message>();

              //client
              var rFailT = store.PrepareClientReceiverForType(dfltCfg);
              var sFailT = store.PrepareClientSenderForType(dfltCfg);
              rFailT.PipeEx(conn, "store: receiver cache");
              sFailT.PipeEx(conn, "store: sender cache");
              conn.Register(Cmd.Send, client.BroadcastMessage);
              conn.Register(Cmd.Connect, client.Connect);
              conn.Register(Cmd.Disconnect, _ => client.Disconnect());
              conn.Register(Cmd.Join, a => {
            var args = (a.Text ?? "").Split(new []{ ' ' }, StringSplitOptions.RemoveEmptyEntries);
            if (args.Length > 2)
              conn.RunError("requires 1 or 2 arguments <?host:port> <name>".ArgSrc("join"));
            else ((Func<Func<string, string, bool>, bool>) (cont => { //I could use ifs; this is more obvious to me...
            switch (args.Length) { //host, name
              case 1:
                return cont(null, args[0]);
              case 2:
                return cont(args[0], args[1]);
              default:
                return cont(null, null);
            } // apply args^ to connect and (name if != null)
              }))((host, name) => conn.RunOrDefault(Cmd.Connect, host) && (name != null) && conn.RunOrDefault(Cmd.Name, name));
              });

              //server
              //it reregisters it's commands if started (to ones created in start fn)
              Action<CmdArg> serverStartOff = null; //~ referenced from itself
              Action<CmdArg> serverStopOff = _ => conn.RunError("not running".ArgSrc("server"));
              serverStartOff = a => {
            var portS = a.Text;
            int port;
            if (!int.TryParse(portS, out port)) {
              //couldn't parse: try default
              if (settings.DefaultServerPort == -1) {
            conn.RunError("requires port (default not allowed)".ArgSrc(Cmd.ServerStart + " " + portS));
            return;
              }
              port = settings.DefaultServerPort;
            }
            //port OK: try creating and starting server:
            try {
              var serverStore = new ChanStore();
              InitServer(settings, serverStore, conn);
              serverStore.StartServer(port);

              //created fine: reregister
              conn.Reregister(Cmd.ServerStart, _ => conn.RunError(("already running (port: " + port + ")").ArgSrc("server")));
              conn.Reregister(Cmd.ServerStop, _ => {
            try {
              serverStore.StopServer();//stop listening for new
              //kill stuff in ChanStore: this will force shut the open channels and close clients
              serverStore.CloseAll().PipeEx(conn, "server.stop (in clear)");

              conn.RunNotifySystem("stopped".ArgSrc("server"));
            } catch (Exception ex) {
              ex.PipeEx(conn, "server.stop");
            } finally {
              conn.Reregister(Cmd.ServerStop, serverStopOff); //use original handlers again
              conn.Reregister(Cmd.ServerStart, serverStartOff);
            }
              });

              conn.RunNotifySystem("started".ArgSrc("server"));
            } catch (Exception ex) {
              ex.PipeEx(conn, Cmd.ServerStart + " " + port);
            }
              };

              conn.Register(Cmd.ServerStart, serverStartOff);
              conn.Register(Cmd.ServerStop, serverStopOff);
              conn.Register(Cmd.Host, async port => {
            try {
              if (string.IsNullOrWhiteSpace(port)) {
            if (settings.DefaultServerPort == -1)
              throw new ArgumentException("requires port (default not allowed)");
            port = settings.DefaultServerPort.ToString();
              }

              if (await conn.RunOrDefaultAsync(Cmd.ServerStart, port)) {
            //~ok: problem: this is run after known, whether Cmd.Server exists, not after server started
            //: connect waits until started; ok
            // - no it doesn't: it cannot: it's elsewhere...
            await Task.Delay(50); //wait a little instead
            await conn.RunOrDefaultAsync(Cmd.Connect, "localhost:" + port);
              }
            } catch (Exception ex) {
              ex.PipeEx(conn, Cmd.Host + " " + port);
            }
              });

              //translate text to send
              conn.Register(Cmd.Text, a => {
//.........这里部分代码省略.........