public Node(Placehold begin, Placehold end, string html)
{
ID = begin.ID;
Children = new List <Node>();
this.PlaceholdType = begin.PlaceholdType;
InnerHtml = html.Substring(begin.EndPosition, end.StartPosition - begin.EndPosition);
OuterHtml = html.Substring(begin.StartPosition, end.EndPosition - begin.StartPosition);
UniqueSign = string.Format("<^*?{0}?*^>", Guid.NewGuid().ToString());
}
private static List <Node> AnalyseTemplate(string html)
{
string pattern = @"<%\s*(?<place>IF|TABLE_ROWS)_(?<tag>BEGIN|END)\s+ID\s*=(?<id>[\s\S]+?)\s*%>";
MatchCollection matchCollectioin = Regex.Matches(html, pattern, RegexOptions.IgnoreCase | RegexOptions.Multiline);
Stack <Placehold> stack = new Stack <Placehold>(matchCollectioin.Count);
List <KeyValuePair <int, Node> > stackNode = new List <KeyValuePair <int, Node> >(matchCollectioin.Count / 2);
StringBuilder htmlCopy = new StringBuilder(html);
int cut_len = 0;
foreach (Match matchField in matchCollectioin)
{
if (matchField.Success && matchField.Groups["id"] != null && !string.IsNullOrWhiteSpace(matchField.Groups["id"].Value))
{
string tag = matchField.Groups["tag"].Value.ToUpper();
string place = matchField.Groups["place"].Value.ToUpper();
Placehold p = new Placehold();
if (tag == "BEGIN")
{
p.TagType = TagType.Begin;
}
else
{
p.TagType = TagType.End;
}
if (place == "IF")
{
p.PlaceholdType = PlaceholdType.If;
}
else
{
p.PlaceholdType = PlaceholdType.Table;
}
p.ID = matchField.Groups["id"].Value.Trim();
p.Word = matchField.Groups[0].Value;
int t_start = htmlCopy.ToString().IndexOf(p.Word);
p.StartPosition = t_start + cut_len;
cut_len = cut_len + p.Word.Length;
htmlCopy.Remove(t_start, p.Word.Length);
if (p.TagType == TagType.Begin)
{
stack.Push(p);
}
else
{
if (stack.Count <= 0)
{
throw new ApplicationException("The tag '" + p.Word + "' has not a matched Begin tag.");
}
Placehold tmp = stack.Pop();
if (tmp.TagType == TagType.Begin && tmp.PlaceholdType == p.PlaceholdType && tmp.ID == p.ID)
{
Node n = new Node(tmp, p, html);
stackNode.Add(new KeyValuePair <int, Node>(stack.Count, n));
}
else
{
throw new ApplicationException("The tag '" + p.Word + "' is not matched with the Begin tag '" + tmp.Word + "'");
}
}
}
}
List <Node> nodeList = new List <Node>(stackNode.Count(k => k.Key == 0));
for (int i = 0; i < stackNode.Count; i++)
{
KeyValuePair <int, Node> n = stackNode[i];
if (n.Key == 0)
{
nodeList.Add(n.Value);
}
else
{
for (int j = i + 1; j < stackNode.Count; j++)
{
if (stackNode[j].Key == n.Key - 1)
{
stackNode[j].Value.Children.Add(n.Value);
break;
}
}
}
}
return(nodeList);
}
