Lazarus Pascal

Parsing XML Children Having Identical Tags

See more XML Examples

Demonstrates how to deal with XML where child elements may have identical tags. Lazarus Pascal

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;
  numPhoneNumbers: Integer;
  i: Integer;
  xPhoneNumber: TXml;
  numGroupMemberships: Integer;
  xMembership: TXml;

begin
  success := False;

  //  This example will get the phoneNumber's and groupMembershihpInfo's from the following XML:

  //  <?xml version="1.0" encoding="UTF-8" ?>
  //  <someEntries>
  //      <entry>
  //          <id>123</id>
  //          <updated>2017-07-19T05:19:57.761Z</updated>
  //          <app:edited xmlns:app="http://www.w3.org/2007/app">2017-07-19T05:19:57.761Z</app:edited>
  //          <category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/contact/2008#contact"/>
  //          <title>George Costanza</title>
  //           <gd:name>
  //              <gd:fullName>George Costanza</gd:fullName>
  //              <gd:givenName>George</gd:givenName>
  //              <gd:familyName>Costanza</gd:familyName>
  //          </gd:name>
  //          <gd:phoneNumber rel="http://schemas.google.com/g/2005#home">(555) 123-4567</gd:phoneNumber>
  //          <gd:phoneNumber rel="http://schemas.google.com/g/2005#mobile">(555) 444-8877</gd:phoneNumber>
  //          <gd:phoneNumber rel="http://schemas.google.com/g/2005#work">(555) 678-1111</gd:phoneNumber>
  //          <gContact:groupMembershipInfo deleted="false" href="http://www.google.com/123"/>
  //          <gContact:groupMembershipInfo deleted="false" href="http://www.google.com/456"/>
  //      </entry>
  //  </someEntries>
  //  

  xml := TXml.Create;

  success := xml.LoadXmlFile('qa_data/xml/georgeCostanza.xml');

  numPhoneNumbers := xml.NumChildrenHavingTag('entry|*:phoneNumber');
  i := 0;
  while i < numPhoneNumbers do
    begin
      xPhoneNumber := xml.GetNthChildWithTag('entry|*:phoneNumber',i);
      WriteLn(xPhoneNumber.Content);
      xPhoneNumber.Free;
      i := i + 1;
    end;

  WriteLn('----');

  numGroupMemberships := xml.NumChildrenHavingTag('entry|*:groupMembershipInfo');
  i := 0;
  while i < numGroupMemberships do
    begin
      xMembership := xml.GetNthChildWithTag('entry|*:groupMembershipInfo',i);
      WriteLn(xMembership.GetAttrValue('href'));
      xMembership.Free;
      i := i + 1;
    end;



  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.