public virtual List <string> FindLink(string html)
{
if (Utility.Utility.IsStringNullOrEmpty(this._BaseUrl))
{
return(null);
}
if (Utility.Utility.IsStringNullOrEmpty(html))
{
return(null);
}
// String Regex
string strRef = @"(href|HREF)[ ]*=.*?[^""'#>]+[""'>]";
html = html.Replace("href = ", "href=");
// Regex Html by string Regex
List <string> listUrl = RegexUtility.RegexGetListAll(ref html, strRef);
if (listUrl != null && listUrl.Count > 0)
{
List <string> listLink = new List <string>();
foreach (string url in listUrl)
{
// Get Link by Regex
strRef = url.Substring(url.IndexOf('=') + 1).Trim('"', '\'', '#', ' ', '>');
if (strRef.Contains("javascript") || strRef.Contains("mailto"))
{
continue;
}
// Standard Link
if (strRef.ToLower().Trim() == "//" || strRef.Contains("file://"))
{
continue;
}
if (strRef.IndexOf("..") != -1 || strRef.StartsWith("/") == true || strRef.StartsWith("http://") == false)
{
if (this._BaseUrl.EndsWith("index.aspx?"))
{
strRef = "index.aspx?" + strRef;
strRef = strRef.Replace("??", "?");
}
try
{
strRef = new Uri(new Uri(this._BaseUrl), strRef).AbsoluteUri;
}
catch
{
continue;
}
}
Utility.Utility.Normalize(ref strRef);
// Check Link
string[] ExtArray = { ".gif", ".jpg", ".css", ".zip", ".exe", ".ico", ".js" };
bool found = true;
foreach (string ext in ExtArray)
{
if (strRef.ToLower().EndsWith(ext))
{
found = false;
break;
}
}
if (found == true && !listLink.Contains(strRef))
{
listLink.Add(strRef);
}
}
return(listLink);
}
return(null);
}
