Pascal (Lazarus/Delphi)

Send a Raw FTP Command (Quote)

Demonstrates the Chilkat Ftp2.Quote method, which sends a raw FTP command and returns a success/failure result rather than the reply text. The only argument is the command, which must not contain CR or LF. The full reply is available in the LastReply property.

Background: Quote and SendCommand do the same thing — send an arbitrary control-connection command — and differ only in what they return: Quote gives a boolean keyed on the reply code and leaves the text in LastReply, while SendCommand returns the reply string directly. Choose Quote when you mainly care whether the command succeeded.

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Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Ftp2;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  ftp: TFtp2;

begin
  success := False;

  //  Demonstrates the Ftp2.Quote method, which sends a raw FTP command to the server.  The only
  //  argument is the command text.  Unlike SendCommand, it returns a success/failure bool rather
  //  than the reply text.

  ftp := TFtp2.Create;

  ftp.Hostname := 'ftp.example.com';
  ftp.Username := 'myFtpLogin';

  //  Normally you would not hard-code the password in source.  You should instead obtain it
  //  from an interactive prompt, environment variable, or a secrets vault.
  ftp.Password := 'myPassword';

  //  Connect and log in (Connect performs both).
  success := ftp.Connect();
  if (success = False) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;

  //  The command must not contain CR or LF characters.  Here we send a NOOP as an example.
  success := ftp.Quote('NOOP');
  if (success = False) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;

  //  The full server reply to the last command is available in the LastReply property.
  WriteLn(ftp.LastReply);

  success := ftp.Disconnect();
  if (success = False) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;


  ftp.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.