(Delphi DLL) Download Text File into String Variable

Download a text file directly into a string variable.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Ftp2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: HCkFtp2;
success: Boolean;
fileContents: PWideChar;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

ftp := CkFtp2_Create();

CkFtp2_putHostname(ftp,'ftp.someFtpServer.com');
CkFtp2_putUsername(ftp,'myFtpUserAccount');
CkFtp2_putPassword(ftp,'myFtpPassword');

// Set other possible settings...
// See http://www.cknotes.com/determining-ftp2-connection-settings/ 
// for more information about FTP connection settings.
CkFtp2_putPassive(ftp,True);
CkFtp2_putAuthTls(ftp,True);

// Connect and login to the FTP server.
success := CkFtp2_Connect(ftp);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

// Change to the remote directory where the existing file is located.
success := CkFtp2_ChangeRemoteDir(ftp,'junk');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

// Download the contents of the remote file into a string variable.

// The GetRemoteFileTextData method assumes the remote file contains ANSI chars.
// To download text files containing non-ANSI text, such as utf-8, call GetRemoteFileTextC
// instead. (see below)
fileContents := CkFtp2__getRemoteFileTextData(ftp,'ansiText.txt');
if (CkFtp2_getLastMethodSuccess(ftp) <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end
else
  begin
    Memo1.Lines.Add(fileContents);
  end;

// To download a remote text file containing utf-8 chars, 
// call GetRemoteFileTextC and pass "utf-8" for the 2nd arg.  This tells
// Chilkat to interpret the incoming bytes according to the utf-8 character encoding.

fileContents := CkFtp2__getRemoteFileTextC(ftp,'utf8Text.txt','utf-8');
if (CkFtp2_getLastMethodSuccess(ftp) <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end
else
  begin
    Memo1.Lines.Add(fileContents);
  end;

success := CkFtp2_Disconnect(ftp);

CkFtp2_Dispose(ftp);

end;