Pascal (Lazarus/Delphi)

Zip and Keep Open

See more Zip Examples

Zip a directory tree by calling WriteZip instead of WriteZipAndClose. When WriteZip is called, the created zip is automatically opened and the zip object contains references to the compressed zip entries (mapped entries) contained within the .zip. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.ZipEntry,
  Chilkat.Zip;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  zip: TZip;
  zipPath: string;
  recurse: Boolean;
  numEntries: Integer;
  entry: TZipEntry;
  i: Integer;

begin
  success := False;

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

  zip := TZip.Create;

  zipPath := 'c:/temp/myFiles.zip';

  //  Initialize the zip object, which also sets the FileName property to the path of the zip to be created.
  zip.NewZip(zipPath);

  //  Append references to files to be zipped.
  recurse := True;
  success := zip.AppendFiles('c:/temp/files_to_zip/*',recurse);
  if (success = False) then
    begin
      WriteLn(zip.LastErrorText);
      Exit;
    end;

  //  Write the .zip, but don't close the zip file.
  //  The zip file we just created is automatically opened and the zip object
  //  now contains entries that are contained within the zip.  (They are memory-mapped entries)
  success := zip.WriteZip();
  if (success = False) then
    begin
      WriteLn(zip.LastErrorText);
      Exit;
    end;

  WriteLn('Successfully created ' + zipPath);

  //  Let's look at what's in the .zip we just created..

  numEntries := zip.NumEntries;

  entry := TZipEntry.Create;

  i := 0;
  while i < numEntries do
    begin
      zip.EntryAt(i,entry);
      if (entry.IsDirectory) then
        begin
          WriteLn(i + ': ' + entry.FileName + ' (directory)');
        end
      else
        begin
          WriteLn(i + ': ' + entry.FileName);
        end;
      i := i + 1;
    end;

  //  Close the zip file when finished.
  zip.CloseZip();


  zip.Free;
  entry.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.