public static void WrapWithHtmlTag(this HtmlNode node)
{
var pTag = new HtmlTagNode("p");
foreach (var child in node.Children)
pTag.AddChild(child);
var htmlTag = new HtmlTagNode("html");
htmlTag.AddChild(pTag);
node.Children.Clear();
node.AddChild(htmlTag);
}
/// <summary>Parses the HTML to an <see cref="HtmlNode"/>.</summary>
/// <param name="html">The HTML.</param>
/// <returns>The HTML node.</returns>
/// <exception cref="InvalidOperationException">The HTML is malformed.</exception>
public HtmlNode Parse(string html)
{
html = CleanUpHtml(html);
var matches = Regex.Matches(html, "<(.*?)>|</(.*?)>|<(.*?)/>|([^<>]*)");
var tokens = matches
.OfType <Group>()
.Select(m => m.Value)
.ToArray();
var root = new HtmlTagNode("html");
var stack = new Stack <HtmlNode>();
stack.Push(root);
foreach (var token in tokens)
{
if (token.StartsWith("</") && token.EndsWith(">")) // end tag
{
var tag = token.Substring(2, token.Length - 3);
var node = stack.Peek();
if (node is HtmlTagNode && ((HtmlTagNode)node).Name == tag)
{
stack.Pop();
}
else if (!IgnoreMalformedHtml)
{
throw new InvalidOperationException("The HTML is malformed at token '<" + token + ">'.");
}
}
else if (token.StartsWith("<") && token.EndsWith("/>")) // full tag
{
var value = token.Substring(1, token.Length - 3);
stack.Peek().AddChild(new HtmlTagNode(value));
}
else if (token.StartsWith("<") && token.EndsWith(">")) // start tag
{
var value = token.Substring(1, token.Length - 2);
var node = new HtmlTagNode(value);
stack.Peek().AddChild(node);
stack.Push(node);
}
else if (!string.IsNullOrEmpty(token)) // text
{
stack.Peek().AddChild(new HtmlTextNode(token));
}
}
return(root);
}
/// <summary>Parses the HTML to an <see cref="HtmlNode"/>.</summary>
/// <param name="html">The HTML.</param>
/// <returns>The HTML node.</returns>
/// <exception cref="InvalidOperationException">The HTML is malformed.</exception>
public HtmlNode Parse(string html)
{
html = CleanUpHtml(html);
var matches = Regex.Matches(html, "<(.*?)>|</(.*?)>|<(.*?)/>|([^<>]*)");
var tokens = matches
.OfType<Group>()
.Select(m => m.Value)
.ToArray();
var root = new HtmlTagNode("html");
var stack = new Stack<HtmlNode>();
stack.Push(root);
foreach (var token in tokens)
{
if (token.StartsWith("</") && token.EndsWith(">")) // end tag
{
var tag = token.Substring(2, token.Length - 3);
var node = stack.Peek();
if (node is HtmlTagNode && ((HtmlTagNode)node).Name == tag)
stack.Pop();
else if (!IgnoreMalformedHtml)
throw new InvalidOperationException("The HTML is malformed at token '<"+ token + ">'.");
}
else if (token.StartsWith("<") && token.EndsWith("/>")) // full tag
{
var value = token.Substring(1, token.Length - 3);
stack.Peek().AddChild(new HtmlTagNode(value));
}
else if (token.StartsWith("<") && token.EndsWith(">")) // start tag
{
var value = token.Substring(1, token.Length - 2);
var node = new HtmlTagNode(value);
stack.Peek().AddChild(node);
stack.Push(node);
}
else if (!string.IsNullOrEmpty(token)) // text
stack.Peek().AddChild(new HtmlTextNode(token));
}
return root;
}
