Sync a Local Tree Up with Preview and Traversal Control

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Demonstrates the Chilkat Ftp2.SyncRemoteTree2 method, which uploads a local tree to the current remote directory with extra controls. The arguments are the local root, the upload mode, whether to descend into subdirectories, and whether to run preview-only. In preview mode the results are available via the SyncPreview property.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

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;
  mode: Integer;
  bDescend: Boolean;
  bPreviewOnly: Boolean;

begin
  success := False;

  //  Demonstrates the Ftp2.SyncRemoteTree2 method, which uploads a local tree to the current remote
  //  directory with extra traversal and preview controls.  The 1st argument is the local root, the
  //  2nd is the upload mode, the 3rd selects whether to descend into subdirectories, and the 4th
  //  selects preview-only (no actual transfers).

  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';

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

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

  //    0 = all selected files
  //    1 = files missing on the server
  //    2 = missing, or newer locally
  //    3 = only files that exist remotely and are newer locally
  //    4 = missing, or a different size
  //    5 = missing, different size, or newer locally

  mode := 5;

  //  Descend into subdirectories.
  bDescend := True;

  //  Preview only: determine what WOULD be uploaded without transferring anything.  The results are
  //  available via the SyncPreview property.
  bPreviewOnly := True;

  success := ftp.SyncRemoteTree2('qa_data/site',mode,bDescend,bPreviewOnly);
  if (success = False) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;

  //  SyncPreview lists the files that would be uploaded.
  WriteLn(ftp.SyncPreview);

  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.