NavigatorOutput.cs

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using System.Xml.XPath;
 
namespace System.Xml.Xsl.XsltOld;
 
internal sealed class NavigatorOutput : IRecordOutput
{
    private readonly XPathDocument _doc;
 
    private int _documentIndex;
 
    private readonly XmlRawWriter _wr;
 
    internal XPathNavigator Navigator => ((IXPathNavigable)_doc).CreateNavigator();
 
    internal NavigatorOutput(string baseUri)
    {
        _doc = new XPathDocument();
        _wr = _doc.LoadFromWriter(XPathDocument.LoadFlags.AtomizeNames, baseUri);
    }
 
    public Processor.OutputResult RecordDone(RecordBuilder record)
    {
        BuilderInfo mainNode = record.MainNode;
        _documentIndex++;
        switch (mainNode.NodeType)
        {
        case XmlNodeType.Element:
        {
            _wr.WriteStartElement(mainNode.Prefix, mainNode.LocalName, mainNode.NamespaceURI);
            for (int i = 0; i < record.AttributeCount; i++)
            {
                _documentIndex++;
                BuilderInfo builderInfo = (BuilderInfo)record.AttributeList[i];
                if (builderInfo.NamespaceURI == "http://www.w3.org/2000/xmlns/")
                {
                    if (builderInfo.Prefix.Length == 0)
                    {
                        _wr.WriteNamespaceDeclaration(string.Empty, builderInfo.Value);
                    }
                    else
                    {
                        _wr.WriteNamespaceDeclaration(builderInfo.LocalName, builderInfo.Value);
                    }
                }
                else
                {
                    _wr.WriteAttributeString(builderInfo.Prefix, builderInfo.LocalName, builderInfo.NamespaceURI, builderInfo.Value);
                }
            }
            _wr.StartElementContent();
            if (mainNode.IsEmptyTag)
            {
                _wr.WriteEndElement(mainNode.Prefix, mainNode.LocalName, mainNode.NamespaceURI);
            }
            break;
        }
        case XmlNodeType.Text:
            _wr.WriteString(mainNode.Value);
            break;
        case XmlNodeType.SignificantWhitespace:
            _wr.WriteString(mainNode.Value);
            break;
        case XmlNodeType.ProcessingInstruction:
            _wr.WriteProcessingInstruction(mainNode.LocalName, mainNode.Value);
            break;
        case XmlNodeType.Comment:
            _wr.WriteComment(mainNode.Value);
            break;
        case XmlNodeType.EndElement:
            _wr.WriteEndElement(mainNode.Prefix, mainNode.LocalName, mainNode.NamespaceURI);
            break;
        }
        record.Reset();
        return Processor.OutputResult.Continue;
    }
 
    public void TheEnd()
    {
        _wr.Close();
    }
}