Creating Compressed (Zipped) Folder using Delphi

Question

Can I create Windows XP\'s Compressed (Zipped) Folder using Delphi?

Answer 1

Some time ago, I've tried all of the Delphi compression libraries that I could find, and eventually I ended up using KaZip by Kiril Antonov.

My requirements were:

• Free;
• Open source;
• Native Delphi code;
• No external dependencies (dll, exe). My most important requirement;
• Small memory footprint;
• Easy to use;

I use it mainly to turn .kml files into .kmz, and it does that amazingly fast.

Here's an example of how I use it:

uses
  KaZip;

...

// replaces a .kml file with a .kmz file
procedure KmlToKmz(const aFileName: string);
var
  FS: TFileStream;
  KaZip:TKaZip;
  KmzFileName:TFileName;
begin
  KmzFileName := ChangeFileExt(aFileName, '.kmz');
  KaZip := TKaZip.Create(nil);
  try
    // create an empty zipfile with .kmz extension:
    FS := TFileStream.Create(KmzFileName, fmOpenReadWrite or FmCreate);
    try
      KaZip.CreateZip(FS);
    finally
      FS.Free;
    end;        

    KaZip.Open(KmzFileName); // Open the new .kmz zipfile
    KaZip.Entries.AddFile(aFileName); // add the .kml
    KaZip.Close; 
    DeleteFile(aFileName); // delete the .kml
  finally
    KaZip.Free;
  end;
end;