Delphi ActiveX

List Files/Directories in Zip by Index

See more Zip Examples

Demonstrates how to iterate over the files and directories in a zip archive by index. Delphi ActiveX

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
success: Integer;
zip: TChilkatZip;
numEntries: Integer;
entry: TChilkatZipEntry;
i: Integer;

begin
success := 0;

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

zip := TChilkatZip.Create(Self);

success := zip.OpenZip('qa_data/zips/sample.zip');
if (success = 0) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

numEntries := zip.NumEntries;

entry := TChilkatZipEntry.Create(Self);

i := 0;
while i < numEntries do
  begin
    zip.EntryAt(i,entry.ControlInterface);
    // Note: In the ZIP file format, it is not required for a ZIP file to contain explicit directory entries. 
    // However, explicit directory entries can be included for convenience and compatibility with certain ZIP file processing tools and software.
    // An explicit directory entry in a ZIP file is an entry that specifically represents a directory, rather than a file. 
    // It usually has a directory name with a trailing slash (/) and zero-length content.
    if (entry.IsDirectory) then
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + entry.FileName + ' (directory)');
      end
    else
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + entry.FileName);
      end;
    i := i + 1;
  end;

// Sample output:

// 0: aaa/ (directory)
// 1: aaa/pigs.json
// 2: bbb/ (directory)
// 3: bbb/base64Cert.txt
// 4: bbb/sub1/ (directory)
// 5: bbb/sub1/brasil_cert.pem
// 6: bbb/sub2/ (directory)
// 7: bbb/sub2/penguins.gif
// 8: bbb/sub2/starfish.jpg
// 9: hamlet.xml
// 10: hello.pdf

zip.CloseZip();
end;