private void ProcessBeginTag(Match match) { string tagName = match.Groups["tagName"].Value; bool selfClosed = match.Groups["selfClosed"].Success; if (HtmlSpecification.selfCloseTags.Contains(tagName, StringComparer.OrdinalIgnoreCase)) { selfClosed = true; } //检查父标签是否可选结束标记,并相应处理 { var element = containerStack.Peek() as DomElement; if (element != null && HtmlSpecification.optionalCloseTags.Contains(element.Name, StringComparer.OrdinalIgnoreCase)) { if (HtmlSpecification.ImmediatelyClose(element.Name, tagName)) { containerStack.Pop(); } } } //处理所有属性 var attributes = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase); foreach (Capture capture in match.Groups["attribute"].Captures) { string name = capture.FindCaptures(match.Groups["attrName"]).Single().Value; string value = capture.FindCaptures(match.Groups["attrValue"]).Select(c => c.Value).SingleOrDefault(); value = HtmlEncoding.HtmlDecode(value); if (attributes.ContainsKey(name)) { continue; } attributes.Add(name, value); } //加入容器堆栈。 { var element = CreateElement(tagName, attributes); if (!selfClosed) { containerStack.Push(element); } } }
/// <summary> /// 检查当前开放的可选结束标签是否必须立即关闭 /// </summary> /// <param name="tagName">分析器遇到的标签</param> /// <param name="element">当前开放的可选结束标签</param> /// <returns></returns> protected virtual bool ImmediatelyClose(string tagName, IHtmlElement element) { return(HtmlSpecification.ImmediatelyClose(element.Name, tagName)); }