public HTML_ELEMENT(string _type, string _params, string _content, HTML_ELEMENT _parent = null)
{
this._type = _type;
this._params = _params;
this._content = _content;
this._parent = _parent;
}
public static HTMLDom Parse_HTML(string html)
{
HTMLDom Dom = new HTMLDom();
string html_pattern = @"^((<)(?<Tag>[\S^<>]+)(\s*)(?<Params>.*)(>))?";
Regex html_regex = new Regex(html_pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);
//Debug.WriteLine(html);
Stack <char> S = new Stack <char>(html.ToCharArray().Reverse());
//Array.ForEach(S.ToArray(), e => Debug.Write(e));
//Debug.WriteLine("");
Stack <string> MS = new Stack <string>();
ArrayList clist = new ArrayList();
int reader_state = 0; //0-Default, 1-Script, 2-Comments
while (S.Count() != 0)
{
//If the code finds what looks like an html statement it will iterate over it using a stack in order to
//ensure that is is a regular statement.
char c = S.Pop();
if (c.Equals('<'))
{
clist.Clear();
clist.Add(c);
while (S.Count != 0 && !c.Equals('>'))
{
c = S.Pop();
//Debug.WriteLine(c);
clist.Add(c);
}
string p = new string((char[])clist.ToArray(typeof(char))).ToLowerInvariant();
Debug.WriteLine(p);
//Now handle it using a regex expression.
//Array.ForEach(clist.ToArray(), e => Debug.Write(e));
//Debug.WriteLine("");
Match M = html_regex.Match(p);
//GroupCollection G = M.Groups;
//Debug.WriteLine("\t" + M.Name + " :: " + M.Value);
//foreach(Group g in G)
//{
// Debug.WriteLine("\t\t" + g.Name + " :: " + g.Value);
//}
/*Debug.WriteLine("" + M.Groups[5].Name + " :: " + M.Groups[5].Value);*/
//If prog finds opening bracket then simply push.
if (html_spec_openers.Contains(M.Groups[5].Value))
{
if (html_spec_openers[M.Groups[5].Value].Equals(M.Groups[5].Value))
{
string _element_type = (string)M.Groups[5].Value;
HTML_ELEMENT _element = new HTML_ELEMENT(_element_type, "", "");
Log.WriteTime("Indentified element type=" + _element_type);
}
else
{
Log.WriteTime("Pushed onto MStack='" + M.Groups[5].Value + "'");
MS.Push(M.Groups[5].Value);
}
}
//Check to see if the prog found a html dom child element. If not then prog expects one of more child objects.
else if (html_spec_closers.Contains(M.Groups[5].Value))
{
string closer_check = MS.Peek();
//Check for matching open and closing bracket.
Log.WriteTime("Checked HTML DOM potential match: Stack.Peek()='"
+ closer_check + "', Regex Match='" + M.Groups[5].Value + "', Openers,Closers=',"
+ html_spec_closers[M.Groups[5].Value] + "," + html_spec_openers[closer_check]);
if (html_spec_openers[closer_check].Equals(M.Groups[5].Value))
{
MS.Pop();
Log.WriteTime("\tSuccess");
Debug.Assert(html_spec_closers[M.Groups[5].Value] is string);
string _element_type = (string)html_spec_closers[M.Groups[5].Value];
Log.WriteTime("Indentified element type=" + _element_type);
HTML_ELEMENT _element = new HTML_ELEMENT(_element_type, "", "");
}
}
else
{
Log.WriteTime("Failed to parse '" + M.Groups[5].Value + "' with name '" + M.Groups[5].Name + "'.");
}
Debug.WriteLine("\t" + M.Groups[5].Value + " :: " + (html_spec_openers.Contains(M.Groups[5].Value) ? html_spec_openers[M.Groups[5].Value] : html_spec_closers[M.Groups[5].Value]));
}
}
if (MS.Count != 0)
{
Log.WriteTime("ERROR: Failed to fully unwind MatchStack with " + MS.Count + " remaining");
Log.WriteTime("\tUnwinding Stack...");
foreach (string er in MS)
{
Log.WriteTime("\t\t" + er);
}
}
return(Dom);
}
