(Delphi DLL) Unzip all Files to a Single Directory (Ignoring Subdirectories in Zip)

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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, Zip, FileAccess;

...

procedure TForm1.Button1Click(Sender: TObject);
var
outDir: PWideChar;
fac: HCkFileAccess;
success: Boolean;
zip: HCkZip;
numUnzipped: Integer;

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

outDir := 'c:/temp/testUnzipDir';

// Make sure our output directory exists.
fac := CkFileAccess_Create();
success := CkFileAccess_DirEnsureExists(fac,outDir);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFileAccess__lastErrorText(fac));
    Exit;
  end;

zip := CkZip_Create();

// In this example, the xml_files.zip contains some files in the subdirectories "dir1" and also "dir2/dir3".

// a1.xml
// b1.xml
// c1.xml
// dir1/a2.xml
// dir1/c2.xml
// dir2/dir3/c3.xml

success := CkZip_OpenZip(zip,'qa_data/zips/xml_files.zip');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// Unzip all files into the directory c:/temp/testUnzipDir
numUnzipped := CkZip_UnzipInto(zip,outDir);
if (numUnzipped < 0) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

Memo1.Lines.Add('Num unzipped = ' + IntToStr(numUnzipped));

// After unzipping via UnzipInto, we have this:

// c:\temp\testUnzipDir\a1.xml
// c:\temp\testUnzipDir\b1.xml
// c:\temp\testUnzipDir\c1.xml
// c:\temp\testUnzipDir\a2.xml
// c:\temp\testUnzipDir\c2.xml
// c:\temp\testUnzipDir\c3.xml

CkZip_CloseZip(zip);

Memo1.Lines.Add('Success.');

CkFileAccess_Dispose(fac);
CkZip_Dispose(zip);

end;