Delphi DLL

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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var
success: Boolean;
ftp: HCkFtp2;
mode: Integer;
synced: HCkStringTable;
n: Integer;
i: Integer;
relPath: PWideChar;

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 := CkFtp2_Create();

CkFtp2_putHostname(ftp,'ftp.example.com');
CkFtp2_putUsername(ftp,'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.
CkFtp2_putPassword(ftp,'myPassword');

success := CkFtp2_Connect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

success := CkFtp2_ChangeRemoteDir(ftp,'public_html');
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

//  Perform a sync.
mode := 6;
success := CkFtp2_SyncLocalTree(ftp,'qa_output/site',mode);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

//  Get the list of files that were uploaded, downloaded, or deleted by that sync.
synced := CkStringTable_Create();
CkFtp2_GetSyncedFiles(ftp,synced);

n := CkStringTable_getCount(synced);
Memo1.Lines.Add('Affected files: ' + IntToStr(n));

for i := 0 to n - 1 do
  begin
    relPath := CkStringTable__stringAt(synced,i);
    if (CkStringTable_getLastMethodSuccess(synced) = False) then
      begin
        Memo1.Lines.Add(CkStringTable__lastErrorText(synced));
        Exit;
      end;
    Memo1.Lines.Add(relPath);
  end;

success := CkFtp2_Disconnect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

CkFtp2_Dispose(ftp);
CkStringTable_Dispose(synced);