Pascal (Lazarus/Delphi)

Get the Files Affected by an FTP Sync

Demonstrates the Chilkat Ftp2.GetSyncedFiles method, which reports the relative paths affected by the most recent synchronization. The only argument is a StringTable that receives the paths (uploaded, downloaded, or deleted).

Background: A sync call reports only overall success, but you usually want to know what actually changed — for logging, for triggering follow-up work on just the new files, or to confirm an incremental sync did the minimal transfer. An empty result is meaningful too: it means everything was already up to date. Call it immediately after the sync, before another operation replaces the recorded list.

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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,
  Chilkat.StringTable;

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

procedure RunDemo;
var
  success: Boolean;
  ftp: TFtp2;
  mode: Integer;
  synced: TStringTable;
  n: Integer;
  i: Integer;
  relPath: string;

begin
  success := False;

  //  Demonstrates the Ftp2.GetSyncedFiles method, which reports the relative paths affected by the
  //  most recent synchronization operation.  The only argument is a StringTable that receives the
  //  paths.

  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;

  //  Perform a sync.
  mode := 6;
  success := ftp.SyncLocalTree('qa_output/site',mode);
  if (success = False) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end;

  //  Get the list of files that were uploaded, downloaded, or deleted by that sync.
  synced := TStringTable.Create;
  ftp.GetSyncedFiles(synced);

  n := synced.Count;
  WriteLn('Affected files: ' + n);

  for i := 0 to n - 1 do
    begin
      relPath := synced.StringAt(i);
      if (synced.LastMethodSuccess = False) then
        begin
          WriteLn(synced.LastErrorText);
          Exit;
        end;
      WriteLn(relPath);
    end;

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


  ftp.Free;
  synced.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.