import System.Data;
import System.Windows.Forms;

public class Parser {
	///////////////////////////////////
	///////////////////////////////////
	// START CONFIGURABLE PARAMETERS //
	///////////////////////////////////
	///////////////////////////////////
	// SET THIS TO 1 (ONE) TO REMOVE HTML TAGS, OR 0 (ZERO) TO LEAVE THEM IN
	public static var iStripTags	= 1;
		
	
	// THIS IS A WORD THAT IF FOUND THE CONTENT PEICE WONT BE ADDED
	// SET THIS TO "" OR SOMETHING LIKE "ABCDEFG01010101" TO DISABLE
	public static var sDontShow 	= "Google Home";
	
	
	// HTML IS SPLIT INTO PEICES DEPENDING ON THIS TAG
	// THIS MEANS PULL PEICES OF CONTENT BETWEEN <P> TAGS BY DEFAULT
	public static var sTag			= "p";
	
	
	// URL OF YOUR CHOICE, CAN BE USED AS {URL} IN CONTENT TEMPLATE
	public static var sContentURL	= "http://your.domain.com/";
	
	
	// TITLE OF YOUR CHOICE, OR "{KEYWORD}"
	// CAN BE USED IN CONTENT TEMPLATE AS {TITLE}
	public static var sContentTitle	= "{KEYWORD}";
	
	
	////////////////////////////////////
	////////////////////////////////////
	// END OF CONFIGURABLE PARAMETERS //
	////////////////////////////////////
	////////////////////////////////////
	// DO NOT MODIFY BELOW THIS LINE! //
	////////////////////////////////////

	public static var ds : DataSet = new DataSet();

	public static function SetupDataSet() {
		var dt : DataTable = new DataTable("Content");
		dt.Columns.Add("Body");
		dt.Columns.Add("Date");
		dt.Columns.Add("Title");
		dt.Columns.Add("URL");
		ds.Tables.Add(dt);
	}
	
	public static function AddRow(sBody) {
		var d = new Date();
		var gd = d.getFullYear()+"-"+d.getMonth()+"-"+d.getDate();
		if (ds.Tables.Count > 0) {
			var dr : DataRow = ds.Tables["Content"].NewRow();
			dr["Body"] = sBody;
			dr["Date"] = gd;
			dr["Title"] = sContentTitle;
			dr["URL"] = sContentURL;
			ds.Tables["Content"].Rows.Add(dr);
		} else {
			MessageBox.Show("Table not initialized.", "JScript Error");
		}
	}
	
	public static function GetExpressionForTagContents (sTagName)
	{
		var sPatternTag;
		if (sTagName == "!")
			sPatternTag = "<!.*?->";
		else if (sTagName.localeCompare("!doctype") == 0)
			sPatternTag = "<!doctype.*?>";
		else if (sTagName.localeCompare("p") == 0)
			sPatternTag = "<\\s*(" + sTagName + ")(>|\\s+[^>]*>)(.*(?!<\\s*/?\\s*(\\1)(>|\\s+)))";
		else
			if (sTagName.localeCompare("br") == 0)
				sPatternTag = "<br\s*/?\\s*>";
			else
				sPatternTag = "<\\s*(" + sTagName + ")(>|\\s+[^>]*>)(.*?)<\\s*/\\s*\\1\\s*>";
		return(sPatternTag);
	}
	
	public static function GetTagByName (sTagName, sSource)
	{
		var sPatternTag = GetExpressionForTagContents(sTagName);
		var sPatternTagNoClose = "<" + sTagName + "(>|\\s+[^>]*>)[^<]";
		var p;
		var re = /&[a-z0-9]+;/ig;
		sSource = sSource.replace(re, " ");
		re = new RegExp(sPatternTag, "mig");
		if ((p = re.exec(sSource)))
			while (p) {
				if (sDontShow.length > 0 && p[3].toLowerCase().indexOf(sDontShow.toLowerCase()) == -1) {
					if (iStripTags == 1)
						AddRow(StripHTMLTags(p[3]));
					else
						AddRow(p[3]);
				}
				p = re.exec(sSource);
			}
	}

	public static function StripHTMLTags(s) {
		if (s == null) return(s);
		if (s.Length == 0) return(s);
		s = "" + s + "";
		return s.replace(new RegExp("(\<[\/]?)([^>]*\>)", "gim"), " ");
	}

	public static function Parse(sInput) : DataSet {
		SetupDataSet();
		GetTagByName(sTag, sInput);
		return(ds);
	}
}