Pascal (Lazarus/Delphi)

Load Entire File into BinData

Demonstrates how to load an entire file into a BinData object. 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.BinData,
  Chilkat.FileAccess;

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

procedure RunDemo;
var
  success: Boolean;
  fac: TFileAccess;
  bd: TBinData;
  maxBytesToRead: Integer;

begin
  success := False;

  fac := TFileAccess.Create;

  success := fac.OpenForRead('qa_data/pdf/sample.pdf');
  if (success = False) then
    begin
      WriteLn(fac.LastErrorText);
      Exit;
    end;

  bd := TBinData.Create;
  maxBytesToRead := 99999999;
  success := fac.FileReadBd(maxBytesToRead,bd);
  if (success = False) then
    begin
      WriteLn(fac.LastErrorText);
      Exit;
    end;

  fac.FileClose();

  //  The bd object contains the file data...
  success := bd.WriteFile('qa_output/sample.pdf');


  fac.Free;
  bd.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.