private void processElement(Element parent, List<Tag> tags, int start, int end)
{
Element element;
string tagType = "";
for (int i = start; i <= end; i++)
{
if (tagType == "")
{
if (tags[i].Name == "!--" | tags[i].Name == "SCRIPT")
{
element = new Element(this);
element.Name = tags[i].Name;
element.Value = tags[i].Value;
this.Elements.Add(element);
parent.Elements.Add(element);
if (i + 1 < end)
{
processElement(parent, tags, i + 1, end);
}
return;
}
else if (tags[i].Name == "")
{
tagType ="text";
}
else
{
tagType = "tag";
}
}
else if (tagType == "tag")
{
if ("/" + tags[start].Name == tags[i].Name)
{
element = new Element(this);
element.Name = tags[start].Name;
element.Value = tags[start].Value;
this.Elements.Add(element);
parent.Elements.Add(element);
if (start+1 <= i - 1)
{
processElement(element, tags, start+1,i-1 );
}
if (i + 1 <= end)
{
processElement(parent, tags, i + 1, end);
}
return;
}
else if (i == end)
{
element = new Element(this);
element.Name = tags[i].Name;
element.Value = tags[i].Value;
this.Elements.Add(element);
parent.Elements.Add(element);
if (start + 1 <= end)
{
processElement(parent, tags, start + 1, end);
}
return;
}
}
else if (tagType == "text")
{
if (tags[i].Name != "")
{
i--;
element = new Element(this);
element.Name = tags[i].Name;
element.Value = tags[i].Value;
this.Elements.Add(element);
parent.Elements.Add(element);
if (i + 1 < end)
{
processElement(parent, tags, i + 1, end);
}
return;
}
}
}
}
public void Startprocess(string htmlSnippet)
{
HTML = htmlSnippet.Trim();
#region Extract tags
int i = 0;
int k = 0;
int j = 0;
String tagType = "";
Tag.EnumFlavor flavor = Tag.EnumFlavor.Text;
Boolean inQoute = false;
char qouteType = ' ';
List<Tag> tags = new List<Tag>();
Tag tag;
while(i< HTML.Length)
{
if (tagType != "" & tagType != "text" & tagType != "commit")
{
if (inQoute == false && (HTML[i] == '\"' | HTML[i] == '\''))
{
qouteType = HTML[i];
inQoute = true;
}
else if (inQoute == true && HTML[i] == qouteType)
{
inQoute = false;
}
}
if (tagType == "")
{
if (HTML.Substring(i, 4) == "<!--")
{
tagType = "commit";
flavor = Tag.EnumFlavor.Commit;
k = i;
}
else if (HTML.Substring(i, 7).ToLower() == "<script")
{
tagType = "script";
flavor = Tag.EnumFlavor.Script;
k = i;
}
else if (HTML[i] == '<')
{
tagType = "tag";
flavor = Tag.EnumFlavor.Open;
k = i;
}
else if (tagType == "")
{
tagType = "text";
flavor = Tag.EnumFlavor.Text;
k = i;
}
}
else if (tagType == "tag" && inQoute == false)
{
if (HTML[i] == '>')
{
tagType = "";
tag = new Tag();
tag.Value=HTML.Substring(k, i - k + 1);
j = tag.Value.Length-1;
foreach (char c in new List<char> { '\n', '\r', ' ', '>', ':' })
{
if (tag.Value.IndexOf(c) != -1)
{
j= Math.Min(tag.Value.IndexOf(c), j);
}
}
tag.Name = tag.Value.Substring(1, j - 1).ToUpper();
tag.Flavor = flavor;
tags.Add(tag);
}
}
else if (tagType == "script" && inQoute == false)
{
if (HTML.Substring(i, 9) == "</script>")
{
tagType = "";
tag = new Tag();
tag.Name = "SCRIPT";
tag.Value=HTML.Substring(k, i - k + 9);
tag.Flavor = Tag.EnumFlavor.Script;
tags.Add(tag);
i += 8;
}
}
else if (tagType == "commit")
{
if (HTML.Substring(i, 3) == "-->")
{
tagType = "";
tag = new Tag();
tag.Name = "!--";
tag.Value=HTML.Substring(k, i - k + 3);
tag.Flavor = Tag.EnumFlavor.Commit;
tags.Add(tag);
i += 2;
}
}
else if (tagType == "text")
{
if (HTML[i] == '<')
{
tagType = "";
tag = new Tag();
tag.Name = "";
tag.Value=HTML.Substring(k, i - k);
tag.Flavor = Tag.EnumFlavor.Text;
tags.Add(tag);
k = i;
i--;
}
}
i++;
}
#endregion
tags.ForEach(delegate(Tag t)
{
if (t.Flavor == Tag.EnumFlavor.Open)
{
if (t.Value.StartsWith("</"))
{
t.Flavor = Tag.EnumFlavor.Close;
}
else if(t.Value.EndsWith("/>"))
{
t.Flavor = Tag.EnumFlavor.Self;
}
}
});
if (tags.Count > 0)
{
int start = 0;
Tag doctype = tags.FirstOrDefault(t => t.Name == "!DOCTYPE");
if (doctype is Tag)
{
start = tags.IndexOf(doctype) + 1;
Element element = new Element(this, doctype);
this._RootElement.Elements.Add(element);
}
processElement(this._RootElement, tags.Skip(start));
}
this.Tags = tags;
}
private void processElement(Element parent, IEnumerable<Tag> tags)
{
for (int i = 0; i < tags.Count(); i++)
{
Tag iTag = tags.ElementAt(i);
if (iTag.Flavor == Tag.EnumFlavor.Open)
{
Element element = new Element(this, iTag);
parent.Elements.Add(element);
this.Elements.Add(element);
IEnumerable<Tag> subTags = tags.Skip(i+1);
Tag eTag = subTags.FirstOrDefault(t => t.Name == "/" + iTag.Name);
int c = subTags.TakeWhile(t => t != eTag).Count();
c = subTags.Take(c).Count(t => t.Name == iTag.Name)+1;
eTag = subTags.FirstOrDefault(t => t.Name == "/" + iTag.Name && --c == 0);
c = subTags.TakeWhile(t => t != eTag).Count();
subTags = subTags.Take(c);
if (subTags.Count() > 0) processElement(element, subTags);
i = i + c;
}
else if (iTag.Flavor != Tag.EnumFlavor.Close)
{
Element element = new Element(this, iTag);
parent.Elements.Add(element);
this.Elements.Add(element);
}
}
}