XML parsing, TXMLDocument
Try this:
uses ComObj, MSXML;procedure TForm1.Button1Click(Sender: TObject);var xml: IXMLDOMDocument; node: IXMLDomNode; nodes_row, nodes_se: IXMLDomNodeList; i, j: Integer; url: string;begin // put url or file name url := 'http://softez.pp.ua/gg.xml'; xml := CreateOleObject('Microsoft.XMLDOM') as IXMLDOMDocument; xml.async := False; xml.load(url); // or use loadXML to load XML document using a supplied string if xml.parseError.errorCode <> 0 then raise Exception.Create('XML Load error:' + xml.parseError.reason); Memo1.Clear; nodes_row := xml.selectNodes('/doc/data/row'); for i := 0 to nodes_row.length - 1 do begin node := nodes_row.item[i]; Memo1.Lines.Add('phrase=' + node.selectSingleNode('phrase').text); nodes_se := node.selectNodes('search_engines/search_engine/se_url'); for j := 0 to nodes_se.length - 1 do begin node := nodes_se.item[j]; Memo1.Lines.Add('url=' + node.text); end; Memo1.Lines.Add('--------------'); end;end;Result:
phrase=key1url=link1_1url=link1_2--------------phrase=key2url=link2_1url=link2_2--------------A Reference to IXMLDOMDocument
If you first include these 3 general purpose library routines ....
uses XMLDoc, XMLIntf, xmldom;function CreateXMLDocument( var Owner1: TComponent): TXMLDocument;beginOwner1 := TComponent.Create( nil);result := TXMLDocument.Create( Owner1);result.Options := [doNodeAutoCreate, doNodeAutoIndent, doAttrNull, doAutoPrefix, doNamespaceDecl];result.DOMVendor := GetDOMVendor( 'MSXML');end;function XPATHSelect( const FocusNode: IXMLNode; const sXPath: string): TArray<IXMLNode>;var DomNodeSelect: IDomNodeSelect; DOMNode : IDomNode; DocAccess : IXmlDocumentAccess; Doc : TXmlDocument; DOMNodes : IDOMNodeList; iDOMNode : integer;beginSetLength( result, 0);if assigned( FocusNode) and Supports( FocusNode.DOMNode, IDomNodeSelect, DomNodeSelect) then DOMNodes := DomNodeSelect.SelectNodes( sXPath);if not assigned( DOMNodes) then exit;SetLength( result, DOMNodes.Length);for iDOMNode := 0 to DOMNodes.Length - 1 do begin Doc := nil; DOMNode := DOMNodes.item[iDOMNode]; if Supports( DOMNode, IXmlDocumentAccess, DocAccess) then Doc := DocAccess.DocumentObject; result[ iDOMNode] := TXmlNode.Create( DOMNode, nil, Doc) as IXMLNode; endend;function XPATHSelectFirst( const FocusNode: IXMLNode; const sXPath: string; var SelectedNode: IXMLNode): boolean;var DomNodeSelect: IDomNodeSelect; DOMNode : IDomNode; DocAccess : IXmlDocumentAccess; Doc : TXmlDocument;beginSelectedNode := nil;if assigned( FocusNode) and Supports( FocusNode.DOMNode, IDomNodeSelect, DomNodeSelect) then DOMNode := DomNodeSelect.selectNode( sXPath);if assigned( DOMNode) and Supports( DOMNode.OwnerDocument, IXmlDocumentAccess, DocAccess) then Doc := DocAccess.DocumentObject;if Assigned( DOMNode) then SelectedNode := TXmlNode.Create( DOMNode, nil, Doc);result := assigned( SelectedNode)end;Then A much neater solution is ...
procedure TForm2.btn1Click(Sender: TObject);const DocumentSource = 'http://softez.pp.ua/gg.xml';var Doc: IXMLDocument; DocOwner: TComponent; RowNode, PhraseNode, UrlNode: IXMLNode; procedure PutLn( const LineFmt: string; const Args: array of const); begin memo2.Lines.Add( Format( LineFmt, Args)) end;beginmemo2.Clear;Doc := CreateXMLDocument( DocOwner);Doc.LoadFromFile( DocumentSource);for RowNode in XPATHSelect( Doc.DocumentElement, '//row[phrase]') do begin if not XPATHSelectFirst( RowNode, 'phrase', PhraseNode) then continue; PutLn( 'phrase=%s', [PhraseNode.NodeValue]); for UrlNode in XPATHSelect( RowNode, 'search_engines/search_engine/se_url') do PutLn( 'url=%s', [UrlNode.NodeValue]); PutLn('--------------',[]) end;DocOwner.Free;end;This was tested on Delphi 2010 and works a treat.
And just for good measure, here is another answer, provided you are not afraid to mix in a little XSLT !
const Transform ='<?xml version="1.0" encoding="utf-8"?>' +'<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> ' +' <xsl:output method="text" indent="no"/>' +' <xsl:template match="text()|@*"/>' +' <xsl:template match="//row">' +' <xsl:text>phrase=</xsl:text>' +' <xsl:value-of select="phrase"/>' +' <xsl:text> </xsl:text>' +' <xsl:apply-templates/>' +' <xsl:text>-------------- </xsl:text>' +' </xsl:template>' +' <xsl:template match="search_engines/search_engine/se_url">' +' <xsl:text>url=</xsl:text>' +' <xsl:value-of select="."/>' +' <xsl:text> </xsl:text>' +' </xsl:template>' +'</xsl:stylesheet>';procedure TForm2.btn1Click( Sender: TObject);const DocumentSource = 'http://softez.pp.ua/gg.xml';var Doc, Style: IXMLDocument; DocOwner, StyleOwner: TComponent; sOut: widestring;begin memo2.Clear; Doc := CreateXMLDocument( DocOwner); Doc.LoadFromFile( DocumentSource); Style := CreateXMLDocument( StyleOwner); Style.LoadFromXML( Transform); Doc.DocumentElement.TransformNode( Style.DocumentElement, sOut); memo2.Lines.Add( sOut); DocOwner.Free; StyleOwner.Freeend;