(Delphi ActiveX) FTP Sync Download Tree w/ Must-Match Constraints

Demonstrates how synchronize a directory tree in the download direction, but only for files matching a set of wildcard filenames.

Note: This example requires Chilkat v9.5.0.76 or greater.

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: TChilkatFtp2;
success: Integer;
mode: Integer;

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

ftp := TChilkatFtp2.Create(Self);

ftp.Hostname := 'ftp.something.com';
ftp.Username := 'my_login';
ftp.Password := 'my_password';

// Connect and login to the FTP server.
success := ftp.Connect();
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

// Set the current remote directory to the root of
// the tree to be downloaded.
success := ftp.ChangeRemoteDir('/subDir1');
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

// Possible synchronization modes are:
// mode=0: Download all files
// mode=1: Download all files that do not exist on the local filesystem.
// mode=2: Download newer or non-existant files.
// mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server..
// mode=5: Download only missing files or files with size differences.
// mode=6: Same as mode 5, but also download newer files.

// This example will download all files, but only those files having filenames
// that match *.gif and *.eml

// Imagine our remote directory tree has these files and directories:

// 	accentedLatin1.txt
// 	accentedUtf8.txt
// 	alice.key
// 	anter_cert.pem
// 	chiliPepper.gif
// 	helloWorld.pdf
// 	abc/chiliPepper.gif
// 	abc/ghk/
// 	data/chiliPepper.gif
// 	data/xyz/dkimHtmlBody.txt
// 	data/xyz/dkimVerifyTest.eml
// 	data/xyz/emailForCreateDsn.eml
// 	text/frenchUtf8.txt
// 	text/helloWorld.txt
// 	text/PolishEmailBody.txt
// 	text/something/

// Indicate that we only want to create auto-create local directories (if needed)
// for the files that are actually downloaded.  If SyncCreateAllLocalDirs remains
// 1, then the corresponding local directory is created for each remote directory
// traversed regardless of whether files within are downloaded.
ftp.SyncCreateAllLocalDirs := 0;

ftp.SyncMustMatch := '*.eml; *.gif';
mode := 0;
success := ftp.SyncLocalTree('c:/temp/subDir1',mode);
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

success := ftp.Disconnect();

// Show the files downloaded.
Memo1.Lines.Add(ftp.SyncedFiles);

// Output showing the files downloaded:

// chiliPepper.gif
// abc/chiliPepper.gif
// data/chiliPepper.gif
// data/xyz/dkimVerifyTest.eml
// data/xyz/emailForCreateDsn.eml
end;