Pascal (Lazarus/Delphi)

XML NewChildBefore

Demonstrates the Chilkat.NewChildBefore method. 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.Xml;

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

procedure RunDemo;
var
  success: Boolean;
  xml: TXml;
  orderBillingInfo: TXml;
  index: Integer;
  xCustId: TXml;

begin
  success := False;

  xml := TXml.Create;

  xml.Tag := 'order';
  xml.NewChild2('order_billing_info|price_list','Listino Italia');
  xml.NewChild2('order_billing_info|price_list_id','1');
  xml.NewChild2('order_billing_info|first_name','Francesco');

  WriteLn(xml.GetXml());

  //  We now have the following XML:

  //  <?xml version="1.0" encoding="utf-8"?>
  //  <order>
  //      <order_billing_info>
  //          <price_list>Listino Italia</price_list>
  //          <price_list_id>1</price_list_id>
  //          <first_name>Francesco</first_name>
  //      </order_billing_info>
  //  </order>

  //  If there is no "customer_id" element under "order_billing_info", then add it.
  if (xml.HasChildWithTag('order_billing_info|customer_id') = True) then
    begin
      WriteLn('customer_id already exists, nothing to do...');
      Exit;
    end;

  //  Add the customer_id element just before the "price_list" element.

  //  Get the "order_billing_info" element
  orderBillingInfo := xml.FindChild('order_billing_info');

  //  Call NewChildBefore to add an XML element <customer_id> before <price_list>
  //  First get the index of the element price_list
  index := orderBillingInfo.TagIndex('price_list');
  WriteLn('index = ' + index);

  //  Add the "customer_id" element just before specified index.
  xCustId := orderBillingInfo.NewChildBefore(index,'customer_id','1234');
  xCustId.Free;
  orderBillingInfo.Free;

  WriteLn(xml.GetXml());

  //  We now have:

  //  <?xml version="1.0" encoding="utf-8"?>
  //  <order>
  //      <order_billing_info>
  //          <customer_id>1234</customer_id>
  //          <price_list>Listino Italia</price_list>
  //          <price_list_id>1</price_list_id>
  //          <first_name>Francesco</first_name>
  //      </order_billing_info>
  //  </order>


  xml.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.