Delphi DLL

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 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
success: Boolean;
zip: HCkZip;
numEntries: Integer;
entry: HCkZipEntry;
i: Integer;

begin
success := False;

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

zip := CkZip_Create();

success := CkZip_OpenZip(zip,'qa_data/zips/sample.zip');
if (success = False) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

numEntries := CkZip_getNumEntries(zip);

entry := CkZipEntry_Create();

i := 0;
while i < numEntries do
  begin
    CkZip_EntryAt(zip,i,entry);
    // 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 (CkZipEntry_getIsDirectory(entry)) then
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + CkZipEntry__fileName(entry) + ' (directory)');
      end
    else
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + CkZipEntry__fileName(entry));
      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

CkZip_CloseZip(zip);

CkZip_Dispose(zip);
CkZipEntry_Dispose(entry);

end;