Parsing spell tooltips

[exemplar]

Not sure how useful this is and knowing my luck (and the superbly documented API ) there's probably a function that already does this, but this has come in handy for me for a few things. I didn't spend a heap of time on this and it was a bit of trial and error for a few items, but it seems to give a fairly accurate, parsed spell description for the most part. Mostly have been only using it for items and a modified auto equipper.

Regex desc_eval = new Regex(@"\${(.+?)}");
Regex desc_effect = new Regex(@"\$(\d*?)([a-z])(\d?)");
DataTable _dt = new DataTable();
public string ParseSpellDescription(WoWSpell spell)
{
	if (spell == null || spell.Description == null)
	{
		return "";
	}
	string res = desc_effect.Replace(spell.Description, delegate(Match m)
	{
		string type = m.Groups[2].Value;
		switch (type)
		{
			case "d":
				return (spell.BaseDuration / 1000).ToString();

			case "z":
				return Lua.GetReturnVal<string>("return GetBindLocation();", 0);
		}
		int spellid = toint(m.Groups[1].Value);
		int spelleffectid = toint(m.Groups[3].Value);
		if (spellid > 0)
		{
			spell = WoWSpell.FromId(spellid);
			if (spell == null)
			{
				return "";
			}
		}
		if (spelleffectid > 0)
		{
			spelleffectid--;
		}
		SpellEffect spelleffect = spell.GetSpellEffect(spelleffectid);
		if (spelleffect == null)
		{
			return "";
		}
		switch (type)
		{
			case "o":
				return (spelleffect.BasePoints / 5 * spell.BaseDuration / 1000).ToString();

			case "s":
			case "m":
				return spelleffect.BasePoints.ToString();

			default:
				Logging.Write("ParseSpellDescription(): unknown type: " + type);
				return "";
		}
	});
	res = desc_eval.Replace(res, delegate(Match m)
	{
		try
		{
			_dt.Reset();
			return _dt.Compute(m.Groups[1].Value, null).ToString();
		}
		catch (Exception) { }
		return "";
	});
	return res;
}
public int toint(string s) //haxhaxhaxhaxhaxhahxhaxhahxh
{
	try
	{
		return int.Parse(s);
	}
	catch (Exception) { }
	return 0;
}