public static bool IsEmptyElement(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (name.Length == 0)
{
return(true);
}
if ('!' == name[0])
{
return(true);
}
if ('?' == name[0])
{
return(true);
}
if (!ElementsFlags.ContainsKey(name.ToLower()))
{
return(false);
}
HtmlElementFlag flag = ElementsFlags[name.ToLower()];
return((flag & HtmlElementFlag.Empty) != 0);
}
private static void RemoveSetting(string tag, HtmlElementFlag flag)
{
if (HtmlNode.ElementsFlags.ContainsKey(tag))
{
HtmlNode.ElementsFlags[tag] = HtmlNode.ElementsFlags[tag] & ~flag;
}
}
public static bool IsClosedElement(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
HtmlElementFlag htmlElementFlag = HtmlNode.ElementsFlags.TryGetValue(name.ToLowerFast());
return((htmlElementFlag & HtmlElementFlag.Closed) != (HtmlElementFlag)0);
}
public static bool IsClosedElement(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (!ElementsFlags.ContainsKey(name.ToLower()))
{
return(false);
}
HtmlElementFlag flag = ElementsFlags[name.ToLower()];
return((flag & HtmlElementFlag.Closed) != 0);
}
/// <summary>
/// Determines if an element node can be kept overlapped.
/// </summary>
/// <param name="name">The name of the element node to check. May not be <c>null</c>.</param>
/// <returns>true if the name is the name of an element node that can be kept overlapped, <c>false</c> otherwise.</returns>
public static bool CanOverlapElement(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (!ElementsFlags.ContainsKey(name.ToLower()))
{
return false;
}
HtmlElementFlag flag = ElementsFlags[name.ToLower()];
return (flag & HtmlElementFlag.CanOverlap) != 0;
}
public static bool IsEmptyElement(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (name.Length == 0)
{
return(true);
}
if ('!' == name[0])
{
return(true);
}
if ('?' == name[0])
{
return(true);
}
HtmlElementFlag htmlElementFlag = HtmlNode.ElementsFlags.TryGetValue(name.ToLowerFast());
return((htmlElementFlag & HtmlElementFlag.Empty) != (HtmlElementFlag)0);
}
public bool IsWebContentChanged(string url, string ID, string @class, string lastContent, out string changedContent)
{
try
{
using (WebClient wc = new WebClient())
{
//string stringThatKeepsYourHtml = "<div id=....";
HtmlDocument doc = new HtmlDocument();
HtmlElementFlag hl = new HtmlElementFlag();
doc.LoadHtml(wc.DownloadString(url));
//doc.LoadHtml(stringThatKeepsYourHtml);
string content = doc.Text;
//content = content.Replace("</div>", "");
if (ID.Length > 0)
{
content = doc.GetElementbyId(ID).InnerHtml;
}
else
{
content = doc.DocumentNode.SelectSingleNode("//div[@class='" + @class + "']").OuterHtml;
Debug.WriteLine("Checking content " + url);
Debug.WriteLine("Content first = " + content);
Debug.WriteLine(content);
}
List <string> removers = new List <string>();
try
{
removers.AddRange(doc.DocumentNode.SelectNodes("//img[@class='wp-post-image']").Select(x => x.OuterHtml).ToList());
}
catch
{
}
try
{
removers.AddRange(doc.DocumentNode.SelectNodes("//a[@class='__cf_email__']").Select(x => x.OuterHtml).ToList());
}
catch
{
}
try
{
removers.AddRange(doc.DocumentNode.SelectNodes("//div[@class='grid-container grid-container__classic tc-grid-shadow tc-grid-border tc-grid-hover-move']").Select(x => x.OuterHtml).ToList());
}
catch
{
}
foreach (string remover in removers)
{
Debug.WriteLine("remover = " + remover);
content = content.Replace(remover, "");
}
content = content.Replace(" ", "");
content = content.Replace(System.Environment.NewLine, "");
content = Regex.Replace(content, @"\t|\n|\r", "");
if (lastContent != content)
{
changedContent = content;
return(true);
}
wc.Dispose();
}
}
catch
{
}
changedContent = string.Empty;
return(false);
}
