/// <summary>
/// 处理结束标签
/// </summary>
/// <param name="endTag">结束标签信息</param>
/// <returns>相关的元素对象，若不支持则返回null</returns>
protected virtual IHtmlElement ProcessEndTag( HtmlEndTag endTag )
{
var tagName = endTag.TagName;
if ( ContainerStack.OfType<IHtmlElement>().Select( e => e.Name ).Contains( tagName, StringComparer.OrdinalIgnoreCase ) )
{
IHtmlElement element;
while ( true )
{
element = ContainerStack.Pop() as IHtmlElement;
if ( element.Name.EqualsIgnoreCase( tagName ) )
break;
}
return element;
}
else
{
ProcessEndTagMissingBeginTag( endTag );
return null;
}
//无需退出CData标签，读取器会自动退出
}
/// <summary>
/// 处理丢失了开始标签的结束标签
/// </summary>
/// <param name="endTag">结束标签信息</param>
protected virtual void ProcessEndTagMissingBeginTag( HtmlEndTag endTag )
{
//如果堆栈中没有对应的开始标签，则将这个结束标签解释为文本
CreateTextNode( endTag.Html );
}
/// <summary>
/// 处理丢失了开始标签的结束标签
/// </summary>
/// <param name="endTag">结束标签信息</param>
protected override void ProcessEndTagMissingBeginTag( HtmlEndTag endTag )
{
//忽略多出的结束标签
}
