private string PreprocessScript(string input, string tag_name)
{
StringBuilder stringBuilder = new StringBuilder();
int i = 0;
int length = tag_name.Length;
while (i < input.Length)
{
bool flag = false;
if (i + length + 1 < input.Length && input.Substring(i, length + 1).ToLower().Equals("<" + tag_name))
{
while (i < input.Length)
{
if (input.Substring(i, 1).Equals(">"))
{
stringBuilder.Append(">");
i++;
}
else
{
if (i + 1 >= input.Length || !input.Substring(i, 2).Equals("/>"))
{
if (input.Substring(i, 1).Equals("\""))
{
stringBuilder.Append("\"");
i++;
while (i < input.Length && !input.Substring(i, 1).Equals("\""))
{
stringBuilder.Append(input.Substring(i, 1));
i++;
}
if (i < input.Length)
{
i++;
stringBuilder.Append("\"");
}
}
else if (input.Substring(i, 1).Equals("'"))
{
stringBuilder.Append("'");
i++;
while (i < input.Length && !input.Substring(i, 1).Equals("'"))
{
stringBuilder.Append(input.Substring(i, 1));
i++;
}
if (i < input.Length)
{
i++;
stringBuilder.Append("'");
}
}
else
{
stringBuilder.Append(input.Substring(i, 1));
i++;
}
continue;
}
stringBuilder.Append("/>");
i += 2;
flag = true;
}
break;
}
if (i >= input.Length)
{
goto IL_314;
}
if (!flag)
{
StringBuilder stringBuilder2 = new StringBuilder();
while (i + length + 3 < input.Length && !input.Substring(i, length + 3).ToLower().Equals("</" + tag_name + ">"))
{
stringBuilder2.Append(input.Substring(i, 1));
i++;
}
stringBuilder.Append(HtmlParser.EncodeScript(stringBuilder2.ToString()));
stringBuilder.Append("</" + tag_name + ">");
if (i + length + 3 < input.Length)
{
i += length + 3;
}
}
goto IL_301;
}
stringBuilder.Append(input.Substring(i, 1));
i++;
IL_301 :;
}
IL_314 :
return(stringBuilder.ToString());
}
public HtmlNodeCollection Parse(string html)
{
HtmlNodeCollection htmlNodeCollection = new HtmlNodeCollection(null);
html = this.PreprocessScript(html, "script");
html = this.PreprocessScript(html, "style");
html = this.RemoveComments(html);
html = this.RemoveSGMLComments(html);
StringCollection tokens = this.GetTokens(html);
int i = 0;
HtmlElement htmlElement = null;
HtmlNodeCollection result;
while (i < tokens.Count)
{
if ("<".Equals(tokens[i]))
{
i++;
if (i >= tokens.Count)
{
result = htmlNodeCollection;
return(result);
}
string name = tokens[i];
i++;
htmlElement = new HtmlElement(name);
while (i < tokens.Count && !">".Equals(tokens[i]) && !"/>".Equals(tokens[i]))
{
string name2 = tokens[i];
i++;
if (i < tokens.Count && "=".Equals(tokens[i]))
{
i++;
string value;
if (i < tokens.Count)
{
value = tokens[i];
}
else
{
value = null;
}
i++;
HtmlAttribute attribute = new HtmlAttribute(name2, HtmlEncoder.DecodeValue(value));
htmlElement.Attributes.Add(attribute);
}
else if (i < tokens.Count)
{
HtmlAttribute attribute = new HtmlAttribute(name2, null);
htmlElement.Attributes.Add(attribute);
}
}
htmlNodeCollection.Add(htmlElement);
if (i < tokens.Count && "/>".Equals(tokens[i]))
{
htmlElement.IsTerminated = true;
i++;
htmlElement = null;
}
else if (i < tokens.Count && ">".Equals(tokens[i]))
{
i++;
}
}
else if (">".Equals(tokens[i]))
{
i++;
}
else if ("</".Equals(tokens[i]))
{
i++;
if (i >= tokens.Count)
{
result = htmlNodeCollection;
return(result);
}
string name = tokens[i];
i++;
int num = this.FindTagOpenNodeIndex(htmlNodeCollection, name);
if (num != -1)
{
this.MoveNodesDown(ref htmlNodeCollection, num + 1, (HtmlElement)htmlNodeCollection[num]);
}
while (i < tokens.Count && !">".Equals(tokens[i]))
{
i++;
}
if (i < tokens.Count && ">".Equals(tokens[i]))
{
i++;
}
htmlElement = null;
}
else
{
string text = tokens[i];
if (this.mRemoveEmptyElementText)
{
text = this.RemoveWhitespace(text);
}
text = HtmlParser.DecodeScript(text);
if (!this.mRemoveEmptyElementText || text.Length != 0)
{
if (htmlElement == null || !htmlElement.NoEscaping)
{
text = HtmlEncoder.DecodeValue(text);
}
HtmlText node = new HtmlText(text);
htmlNodeCollection.Add(node);
}
i++;
}
}
result = htmlNodeCollection;
return(result);
}