(Delphi ActiveX) Compress a String and Save as a Gzip File

See more Gzip Examples

This example demonstrates how to use the CompressStringToFile method to compress a string and write the result directly to a Gzip (.gz) file.

The input string is first converted to its byte representation using the specified character set (in this case, UTF-8). The resulting bytes are then compressed using the Gzip format, and the compressed output is written directly to the specified file.

This method is convenient when you want to generate a compressed file from in-memory text without needing intermediate objects such as BinData or StringBuilder.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
gzip: TChilkatGzip;
inputStr: WideString;

begin
success := 0;

// This example demonstrates how to compress a string and save the result
// directly to a Gzip (.gz) file.

gzip := TChilkatGzip.Create(Self);

// The string to be compressed:
inputStr := 'The quick brown fox jumps over the lazy dog.';

// Compress the string using UTF-8 and write to a file:
success := gzip.CompressStringToFile(inputStr,'utf-8','output.gz');
if (success = 0) then
  begin
    Memo1.Lines.Add(gzip.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Compression successful.');
Memo1.Lines.Add('Gzip file written to output.gz');
end;