HtmlUtf8RawTextWriterIndent.cs

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using System.IO;
 
namespace System.Xml;
 
internal sealed class HtmlUtf8RawTextWriterIndent : HtmlUtf8RawTextWriter
{
    private int _indentLevel;
 
    private int _endBlockPos;
 
    private string _indentChars;
 
    private bool _newLineOnAttributes;
 
    public HtmlUtf8RawTextWriterIndent(Stream stream, XmlWriterSettings settings)
        : base(stream, settings)
    {
        Init(settings);
    }
 
    public override void WriteDocType(string name, string pubid, string sysid, string subset)
    {
        base.WriteDocType(name, pubid, sysid, subset);
        _endBlockPos = _bufPos;
    }
 
    public override void WriteStartElement(string prefix, string localName, string ns)
    {
        _elementScope.Push((byte)_currentElementProperties);
        if (ns.Length == 0)
        {
            _currentElementProperties = (ElementProperties)HtmlUtf8RawTextWriter._elementPropertySearch.FindCaseInsensitiveString(localName);
            if (_endBlockPos == _bufPos && (_currentElementProperties & ElementProperties.BLOCK_WS) != 0)
            {
                WriteIndent();
            }
            _indentLevel++;
            _bufBytes[_bufPos++] = 60;
        }
        else
        {
            _currentElementProperties = (ElementProperties)192u;
            if (_endBlockPos == _bufPos)
            {
                WriteIndent();
            }
            _indentLevel++;
            _bufBytes[_bufPos++] = 60;
            if (prefix.Length != 0)
            {
                RawText(prefix);
                _bufBytes[_bufPos++] = 58;
            }
        }
        RawText(localName);
        _attrEndPos = _bufPos;
    }
 
    internal override void StartElementContent()
    {
        _bufBytes[_bufPos++] = 62;
        _contentPos = _bufPos;
        if ((_currentElementProperties & ElementProperties.HEAD) != 0)
        {
            WriteIndent();
            WriteMetaElement();
            _endBlockPos = _bufPos;
        }
        else if ((_currentElementProperties & ElementProperties.BLOCK_WS) != 0)
        {
            _endBlockPos = _bufPos;
        }
    }
 
    internal override void WriteEndElement(string prefix, string localName, string ns)
    {
        _indentLevel--;
        bool flag = (_currentElementProperties & ElementProperties.BLOCK_WS) != 0;
        if (flag && _endBlockPos == _bufPos && _contentPos != _bufPos)
        {
            WriteIndent();
        }
        base.WriteEndElement(prefix, localName, ns);
        _contentPos = 0;
        if (flag)
        {
            _endBlockPos = _bufPos;
        }
    }
 
    public override void WriteStartAttribute(string prefix, string localName, string ns)
    {
        if (_newLineOnAttributes)
        {
            RawText(_newLineChars);
            _indentLevel++;
            WriteIndent();
            _indentLevel--;
        }
        base.WriteStartAttribute(prefix, localName, ns);
    }
 
    protected override void FlushBuffer()
    {
        _endBlockPos = ((_endBlockPos == _bufPos) ? 1 : 0);
        base.FlushBuffer();
    }
 
    private void Init(XmlWriterSettings settings)
    {
        _indentLevel = 0;
        _indentChars = settings.IndentChars;
        _newLineOnAttributes = settings.NewLineOnAttributes;
    }
 
    private void WriteIndent()
    {
        RawText(_newLineChars);
        for (int num = _indentLevel; num > 0; num--)
        {
            RawText(_indentChars);
        }
    }
}