Pascal (Lazarus/Delphi)

Egypt ITIDA Generate eReceipt UUID

See more Egypt ITIDA Examples

Demonstrates how to generate the eReceipt UUID for Egypt ITIDA.

Note: This example requires Chilkat v9.5.0.92 or greater.

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.StringBuilder;

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

procedure RunDemo;
var
  success: Boolean;
  sb: TStringBuilder;
  uuid: string;

begin
  success := False;

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

  //  Note: This example requires Chilkat v9.5.0.92 or greater.
  //  (In v9.5.0.92, the "itida" encoding was added to StringBuilder's Encode method.)
  sb := TStringBuilder.Create;

  //  Load the eReceipt JSON into a StringBuilder object.
  success := sb.LoadFile('qa_data/itida/EReceipt_ex.json','utf-8');
  if (success = False) then
    begin
      WriteLn('Failed to load input file.');
      Exit;
    end;

  //  Convert the contents of sb to the ITIDA canonical form.
  //  Always pass utf-8 for the 2nd arg.
  sb.Encode('itida','utf-8');

  //  Get the lowercase hex encoded SHA256 hash of the canonicalized JSON
  //  (always use utf-8)
  uuid := sb.GetHash('sha256','hex_lower','utf-8');
  WriteLn('eInvoicing UUID = ' + uuid);


  sb.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.