Iterate over nodes in an XML document using FirstChild / NextSibling

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Source Code Listing

// Iterate over each "DOC" record (crisp.xml) and copy the
// ArticleTitle to a new XML document
void ScanForArticleTitles2(void)
    {
    // Load the input document.
    CkXml xml;
    xml.LoadXmlFile("crisp.xml");

    // Create the output XML document in-memory
    CkXml outXml;
    outXml.put_Tag("article_titles");

    // Iterate over the "DOC" nodes by calling FirstChild
    // followed by NextSibling2 repeatedly until it returns false.
    CkString strContent;
    CkXml *node = xml.FirstChild();
    while (node)
	{
	CkXml *titleNode = node->FindChild("ArticleTitle");
	if (titleNode)
	    {
	    // NewChild returns the created child, whereas NewChild2 does not.
	    titleNode->get_Content(strContent);
	    outXml.NewChild2("article",strContent.getString());
	    delete titleNode;
	    }

	// Move to the next sibling. The internal reference within node is updated
	// to the node's next sibling. If no siblings remain, it returns false.
	if (!node->NextSibling2())
	    {
	    delete node;
	    node = 0;
	    }
	}

    outXml.SaveXml("ArticleTitles2.xml");
    return;
    }