Get JSON Details from the Last Operation

See more MIME Examples

Demonstrates GetLastJsonData, which copies structured details from the most recent operation into a JsonObject when such details are available. Many operations produce no JSON data, in which case the object is empty or minimal.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Tip: Code to parse the returned JSON can be generated with Chilkat's online tool at https://tools.chilkat.io/jsonParse.

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.Mime,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  mime: TMime;
  pfxPassword: string;
  json: TJsonObject;
  jsonStr: string;

begin
  success := False;

  mime := TMime.Create;
  success := mime.LoadMimeFile('qa_data/encrypted.eml');
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;

  //  Some operations produce structured JSON details.  After an operation, copy those details into a
  //  JsonObject with GetLastJsonData.  Many methods produce no JSON, in which case the object is
  //  little or empty.
  pfxPassword := 'myPfxPassword';
  success := mime.AddPfxSourceFile('qa_data/recipient.pfx',pfxPassword);
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;
  success := mime.Decrypt();
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;

  json := TJsonObject.Create;
  mime.GetLastJsonData(json);

  json.EmitCompact := False;
  jsonStr := json.Emit();
  WriteLn(jsonStr);


  mime.Free;
  json.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.