Delphi DLL

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: Boolean;
ftp: HCkFtp2;
sb: HCkStringBuilder;

begin
success := False;

//  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 := 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;

sb := CkStringBuilder_Create();
CkStringBuilder_Append(sb,'appended line one' + #10);
CkStringBuilder_Append(sb,'appended line two' + #10);

success := CkFtp2_AppendFileSb(ftp,'logs/app.log',sb,'utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;
Memo1.Lines.Add('Appended text.');

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

CkFtp2_Dispose(ftp);
CkStringBuilder_Dispose(sb);