Pascal (Lazarus/Delphi)

Gzip a File

See more Gzip Examples

Demonstrates how to create a .gz (gzipped file). 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.Gzip;

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

procedure RunDemo;
var
  success: Boolean;
  gzip: TGzip;
  embeddedExtractPath: string;

begin
  success := False;

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

  gzip := TGzip.Create;

  //  This will create a .gz such that when ungzipped by a tool such as 7-Zip,
  //  it will create "qa_data/hamlet.xml".
  success := gzip.CompressFile('qa_data/hamlet.xml','qa_output/hamlet.xml.gz');
  if (success = False) then
    begin
      WriteLn(gzip.LastErrorText);
      Exit;
    end;

  //  Call CompressFile2 to explicitly specify the ungzip path
  //  For example, this will create a .gz such that when ungzipped by a tool such as 7-Zip,
  //  it will create "hamlet.xml".
  embeddedExtractPath := 'hamlet.xml';
  success := gzip.CompressFile2('qa_data/hamlet.xml',embeddedExtractPath,'qa_output/hamlet2.xml.gz');
  if (success = False) then
    begin
      WriteLn(gzip.LastErrorText);
      Exit;
    end;

  WriteLn('Success.');


  gzip.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.