Delphi ActiveX

Append Text to a Remote FTP File (StringBuilder)

Demonstrates the Chilkat Ftp2.AppendFileSb method, which encodes the text in a StringBuilder and appends the bytes to a remote file. The arguments are the remote filename, the StringBuilder, and the charset.

Background: When you have accumulated several lines or records in a StringBuilder, this appends them to a remote file in one call, encoding as it writes. It pairs naturally with building up text in memory and flushing it to a remote log periodically.

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var
success: Integer;
ftp: TChilkatFtp2;
sb: TChilkatStringBuilder;

begin
success := 0;

//  Demonstrates the Ftp2.AppendFileSb method, which encodes the text in a StringBuilder and
//  appends the bytes to a remote file.  The 1st argument is the remote filename, the 2nd is the
//  StringBuilder, and the 3rd is the charset.

ftp := TChilkatFtp2.Create(Self);

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 = 0) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

sb := TChilkatStringBuilder.Create(Self);
sb.Append('appended line one' + #10);
sb.Append('appended line two' + #10);

success := ftp.AppendFileSb('logs/app.log',sb.ControlInterface,'utf-8');
if (success = 0) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add('Appended text.');

success := ftp.Disconnect();
if (success = 0) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;