(Delphi DLL) Create Zip in a BinData Object

Recursively appends files in a directory tree and writes a zip archive into a Chilkat BinData object.

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, BinData, Zip;

...

procedure TForm1.Button1Click(Sender: TObject);
var
zip: HCkZip;
success: Boolean;
recurse: Boolean;
bdZip: HCkBinData;
zipAsBase64: PWideChar;

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

zip := CkZip_Create();

// Initialize the zip object.  Because we will never actually write a zip file to the filesystem,
// the filepath passed to NewZip does not matter.
success := CkZip_NewZip(zip,'x.zip');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// Append a directory tree.  The call to AppendFiles does
// not read the file contents or append them to the zip
// object in memory.  It simply appends references
// to the files so that when WriteBd, WriteZip, or WriteZipAndClose 
// is called, the referenced files are streamed and compressed
// into the .zip output file (or BinData object).

recurse := True;
success := CkZip_AppendFiles(zip,'c:/temp/a/*',recurse);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// Write the zip archive into the bdZip object.
bdZip := CkBinData_Create();
success := CkZip_WriteBd(zip,bdZip);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// We could directly access the bytes of the zip archive, or perhaps
// get the zip bytes in base64 format.
zipAsBase64 := CkBinData__getEncoded(bdZip,'base64');
Memo1.Lines.Add(zipAsBase64);

// Or the zip can be used by some other Chilkat method call that accepts
// a BinData object as an argument.

CkZip_Dispose(zip);
CkBinData_Dispose(bdZip);

end;