(Delphi ActiveX) Iterate over Matching Filenames

Iterates over files within a .zip that match a pattern. In this case, the pattern is "*.pem". This example will open a .zip containing files of type .txt, .cer, .pem, and possibly others, and will iterate over only the .pem files.

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
zip: TChilkatZip;
success: Integer;
entry: IChilkatZipEntry;
nextEntry: IChilkatZipEntry;
pemStr: WideString;
bContinue: Integer;

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

zip := TChilkatZip.Create(Self);

// Open a .zip containing PEM files, among other things..
success := zip.OpenZip('qa_data/certs/thawte-roots.zip');
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

entry := zip.FirstMatchingEntry('*.pem');
if (zip.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add('No PEM entries found.');
    Exit;
  end;

bContinue := 1;
while (bContinue = 1) do
  begin

    Memo1.Lines.Add('Entry: ' + entry.FileName);

    // Get the uncommpressed contents of the entry:
    pemStr := entry.UnzipToString(0,'utf-8');
    Memo1.Lines.Add(pemStr);

    nextEntry := entry.NextMatchingEntry('*.pem');
    bContinue := entry.LastMethodSuccess;

    entry := nextEntry;
  end;
end;