HtmlNode.cs

using System.Collections.Generic;
using System.Text;
using System.Xml;
 
namespace Waher.Content.Html
{
    public abstract class HtmlNode
    {
        private readonly HtmlDocument document;
        private readonly HtmlNode parent;
        private int start;
        private int end;
 
        public HtmlNode(HtmlDocument Document, HtmlNode Parent, int StartPosition)
        {
            this.document = Document;
            this.parent = Parent;
            this.start = StartPosition;
            this.end = -1;
        }
 
        public HtmlNode(HtmlDocument Document, HtmlNode Parent, int StartPosition, int EndPosition)
        {
            this.document = Document;
            this.parent = Parent;
            this.start = StartPosition;
            this.end = EndPosition;
        }
 
        public HtmlDocument Document => this.document;
 
        public HtmlNode Parent => this.parent;
 
        public int StartPosition
        {
            get => this.start;
            internal set => this.start = value;
        }
 
        public int EndPosition
        {
            get => this.end;
            internal set => this.end = value;
        }
 
        public string OuterHtml
        {
            get
            {
                return this.document.HtmlText.Substring(this.start, this.end - this.start + 1);
            }
        }
 
        protected static void SplitName(string FullName, out string Prefix, out string LocalName,
            out bool HasPrefix)
        {
            int i = FullName.IndexOf(':');
            if (i < 0)
            {
                LocalName = FullName;
                Prefix = null;
                HasPrefix = false;
            }
            else
            {
                Prefix = FullName.Substring(0, i);
                LocalName = FullName.Substring(i + 1);
                HasPrefix = true;
            }
        }
 
        public abstract void Export(XmlWriter Output, Dictionary<string, string> Namespaces);
 
        public abstract void Export(StringBuilder Output);
    }
}