/// <summary>
/// Starts editting a file
/// </summary>
/// <param name="Server">Reference to the telnet server</param>
/// <param name="Filename">File to edit</param>
private static void EditFile(TelnetServer Server, string Filename)
{
if (!File.Exists(Filename)) throw new Exception("File does not exist: " + Filename);
// Makes a working file
string Tempfile = ReplaceExt(Filename, ".$$$");
string Bakfile = ReplaceExt(Filename, ".bak");
File.Copy(Filename, Tempfile, true);
// Detecting line endings
FileStream Stream = File.OpenRead(Tempfile);
int Lines = 0;
int Byte = 0;
for (long Pos = 0; Pos < Stream.Length; ++Pos)
{
Byte = Stream.ReadByte();
if (Byte == 10) ++Lines;
}
Stream.Close();
// Appairently the file doesn't end with a line ending
if (Byte != 10) ++Lines;
// Okay, we know the amount of lines
Server.Print(Lines.ToString() + " lines. Type ? for help.");
// Lets start the main loop
while (true)
{
// Shows a prompt and asks for a command
Server.Print("*", true);
string[] Arguments = SplitCommandline(Server.Input());
if (Arguments.Length == 0) continue;
switch (Arguments[Arguments.Length - 1].Substring(0, 1).ToUpper())
{
case "Q": // Quits, without saving
File.Delete(Tempfile);
return;
case "E": // Quits, with saving
if (File.Exists(Bakfile)) File.Delete(Bakfile);
File.Move(Filename, Bakfile);
File.Move(Tempfile, Filename);
return;
case "L": // Lists some lines
if (Arguments.Length > 2) List(Server, Tempfile, int.Parse(Arguments[0]), int.Parse(Arguments[1]));
else if (Arguments.Length > 1) List(Server, Tempfile, int.Parse(Arguments[0]), Lines);
else List(Server, Tempfile, 1, Lines);
break;
case "?": // Shows help
EdlinHelp(Server);
break;
default:
// Is this a line number, or unknown entry?
int LineNo = -1;
try { LineNo = int.Parse(Arguments[0]); } catch { }
if (LineNo == -1) Server.Print("Entry error");
else if (LineNo > Lines) Server.Print("Line out of range (1 to " + Lines.ToString() + ")");
else EditLine(Server, Tempfile, LineNo);
break;
}
}
}
/// <summary>
/// Edits a line
/// </summary>
/// <param name="Server">Reference to the telnet server</param>
/// <param name="Tempfile">The location of the temp file</param>
/// <param name="LineNo">Line number to edit</param>
private static void EditLine(TelnetServer Server, string Tempfile, int LineNo)
{
List(Server, Tempfile, LineNo, LineNo);
Server.Print(Tools.ZeroFill(LineNo, 8, ' ') + ":*", true);
string NewLine = Server.Input();
if (NewLine == "\x03") return;
Edlin.UpdateLine(Tempfile, LineNo, NewLine);
}
/// <summary>
/// Actually starts the demo
/// </summary>
/// <param name="Server">Reference to the Telnet Server</param>
public static void Start(TelnetServer Server)
{
// Configures the onboard button. If this fails, it's probably already in use by another app.
InputPort Button = null;
try { Button = new InputPort(ONBOARD_SW1, false, Port.ResistorMode.Disabled); }
catch (Exception e)
{
Server.Color(TelnetServer.Colors.LightRed);
Server.Print("Exception " + e.Message + " given. Were the onboard Button already configured?");
Server.Color(TelnetServer.Colors.White);
return;
}
// Configures the onboard LED. If this fails, it's probably already in use by another app.
OutputPort Led = null;
try { Led = new OutputPort(ONBOARD_LED, false); }
catch (Exception e)
{
Button.Dispose(); // The button is already defined
Server.Color(TelnetServer.Colors.LightRed);
Server.Print("Exception " + e.Message + " given. Were the onboard LED already configured?");
Server.Color(TelnetServer.Colors.White);
return;
}
// Disables echoing of keypresses
Server.EchoEnabled = false;
// Clears the screen
Server.ClearScreen();
// Draws a Netduino Plus in ANSI/ASCII art
Server.Print("\xda\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xbf");
Server.Print("\xb3 \xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe \xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xb3");
Server.Print("\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb \xdc \xb3");
Server.Print("\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb NETDUINO \xb3");
Server.Print("\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb PLUS \xb3");
Server.Print("\xb3 ..\xb3");
Server.Print("\xdb\xdb \xdb\xdb ::\xb3");
Server.Print("\xb3 \xdb\xdb\xdb\xdb\xdb\xdb \xb3");
Server.Print("\xdb\xdb\xdb\xdb\xdb \xdb\xdb\xdb\xdb\xdb\xdb \xb3");
Server.Print("\xdb\xdb\xdb\xdb\xdb \xdb\xdb\xdb\xdb\xdb\xdb \xfe\xfe\xfe\xfe\xfe\xfe \xfe\xfe\xfe\xfe\xfe\xfe\xb3");
Server.Print("\xc0\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xdb\xdb\xdb\xdb\xdb\xdb\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xd9");
Server.Print("", true);
Server.Print("Push the Netduino Plus onboard button, or press a key to close this app");
// We only update the screen if the LastState is different from the current state
bool LastState = false;
while (Server.IsConnected && Server.Input(1, false) == "")
{
// We need to update
if (Button.Read() == LastState)
{
// Lets record the last state
LastState = !Button.Read();
Led.Write(LastState);
// Draws the button
if (LastState) Server.Color(TelnetServer.Colors.HighIntensityWhite);
else Server.Color(TelnetServer.Colors.Gray);
Server.Locate(7, 26, true); Server.Print("\xdb\xdb", true, true);
// Draws the LED
if (LastState) Server.Color(TelnetServer.Colors.LightBlue);
else Server.Color(TelnetServer.Colors.Gray);
Server.Locate(3, 29, true); Server.Print("\xdc", true);
// Brings back the cursor to the last line
Server.Locate(14, 1);
}
}
// Releases the pins
Button.Dispose();
Led.Dispose();
// Enables echo again and clears the screen
if (Server.IsConnected)
{
Server.EchoEnabled = true;
Server.ClearScreen();
}
}
