(Delphi DLL) 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 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, ZipEntry, Zip;

...

procedure TForm1.Button1Click(Sender: TObject);
var
zip: HCkZip;
success: Boolean;
entry: HCkZipEntry;
nextEntry: HCkZipEntry;
pemStr: PWideChar;
bContinue: Boolean;

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

zip := CkZip_Create();

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

entry := CkZip_FirstMatchingEntry(zip,'*.pem');
if (CkZip_getLastMethodSuccess(zip) <> True) then
  begin
    Memo1.Lines.Add('No PEM entries found.');
    Exit;
  end;

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

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

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

    nextEntry := CkZipEntry_NextMatchingEntry(entry,'*.pem');
    bContinue := CkZipEntry_getLastMethodSuccess(entry);
    CkZipEntry_Dispose(entry);
    entry := nextEntry;
  end;

CkZip_Dispose(zip);

end;