public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
return true; // ignore whitespace
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype())
{
// todo: parse error check on expected doctypes
// todo: quirk state check on doctype ids
Token.Doctype d = t.AsDoctype();
DocumentType doctype = new DocumentType(d.Name.ToString(), d.PublicIdentifier.ToString(), d.SystemIdentifier.ToString(), tb.BaseUri.ToString());
tb.Document.AppendChild(doctype);
if (d.ForceQuirks)
{
tb.Document.QuirksMode(Document.QuirksModeEnum.Quirks);
}
tb.Transition(BeforeHtml);
}
else
{
// todo: check not iframe srcdoc
tb.Transition(BeforeHtml);
return tb.Process(t); // re-process token
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsDoctype())
{
tb.Error(this);
return false;
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (IsWhitespace(t))
{
return true; // ignore whitespace
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("html"))
{
tb.Insert(t.AsStartTag());
tb.Transition(BeforeHead);
}
else if (t.IsEndTag() && (StringUtil.In(t.AsEndTag().Name(), "head", "body", "html", "br")))
{
return AnythingElse(t, tb);
}
else if (t.IsEndTag())
{
tb.Error(this);
return false;
}
else
{
return AnythingElse(t, tb);
}
return true;
}
public abstract bool Process(Token t, HtmlTreeBuilder tb);
/// <summary>
/// Parse a fragment of HTML into a list of nodes. The context element, if supplied, supplies parsing context.
/// </summary>
/// <param name="fragmentHtml">the fragment of HTML to parse</param>
/// <param name="context">(optional) the element that this HTML fragment is being parsed for (i.e. for inner HTML). This provides stack context (for implicit element creation).</param>
/// <param name="baseUri">base URI of document (i.e. original fetch location), for resolving relative URLs.</param>
/// <returns>list of nodes parsed from the input HTML. Note that the context element, if supplied, is not modified.</returns>
public static IList <Node> ParseFragment(string fragmentHtml, Element context, string baseUri)
{
HtmlTreeBuilder treeBuilder = new HtmlTreeBuilder();
return(treeBuilder.ParseFragment(fragmentHtml, context, baseUri, ParseErrorList.NoTracking()));
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
switch (t.Type)
{
case Token.TokenType.StartTag:
Token.StartTag startTag = t.AsStartTag();
string name = startTag.Name();
if (name.Equals("tr"))
{
tb.ClearStackToTableBodyContext();
tb.Insert(startTag);
tb.Transition(InRow);
}
else if (StringUtil.In(name, "th", "td"))
{
tb.Error(this);
tb.Process(new Token.StartTag("tr"));
return tb.Process(startTag);
}
else if (StringUtil.In(name, "caption", "col", "colgroup", "tbody", "tfoot", "thead"))
{
return ExitTableBody(t, tb);
}
else
{
return AnythingElse(t, tb);
}
break;
case Token.TokenType.EndTag:
Token.EndTag endTag = t.AsEndTag();
name = endTag.Name();
if (StringUtil.In(name, "tbody", "tfoot", "thead"))
{
if (!tb.InTableScope(name))
{
tb.Error(this);
return false;
}
else
{
tb.ClearStackToTableBodyContext();
tb.Pop();
tb.Transition(InTable);
}
}
else if (name.Equals("table"))
{
return ExitTableBody(t, tb);
}
else if (StringUtil.In(name, "body", "caption", "col", "colgroup", "html", "td", "th", "tr"))
{
tb.Error(this);
return false;
}
else
{
return AnythingElse(t, tb);
}
break;
default:
return AnythingElse(t, tb);
}
return true;
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
tb.Insert("html");
tb.Transition(BeforeHead);
return tb.Process(t);
}
/// <summary>
/// Parse a fragment of HTML into a list of nodes. The context element, if supplied, supplies parsing context.
/// </summary>
/// <param name="fragmentHtml">the fragment of HTML to parse</param>
/// <param name="context">(optional) the element that this HTML fragment is being parsed for (i.e. for inner HTML). This provides stack context (for implicit element creation).</param>
/// <param name="baseUri">base URI of document (i.e. original fetch location), for resolving relative URLs.</param>
/// <returns>list of nodes parsed from the input HTML. Note that the context element, if supplied, is not modified.</returns>
public static IList<Node> ParseFragment(string fragmentHtml, Element context, string baseUri)
{
HtmlTreeBuilder treeBuilder = new HtmlTreeBuilder();
return treeBuilder.ParseFragment(fragmentHtml, context, baseUri, ParseErrorList.NoTracking());
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
tb.Insert(t.AsCharacter());
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype())
{
tb.Error(this);
}
else if (t.IsStartTag())
{
Token.StartTag startTag = t.AsStartTag();
string name = startTag.Name();
if (name.Equals("html"))
{
return tb.Process(t, InBody);
}
else if (name.Equals("body"))
{
tb.Insert(startTag);
tb.FramesetOk(false);
tb.Transition(InBody);
}
else if (name.Equals("frameset"))
{
tb.Insert(startTag);
tb.Transition(InFrameset);
}
else if (StringUtil.In(name, "base", "basefont", "bgsound", "link", "meta", "noframes", "script", "style", "title"))
{
tb.Error(this);
Element head = tb.HeadElement;
tb.Push(head);
tb.Process(t, InHead);
tb.RemoveFromStack(head);
}
else if (name.Equals("head"))
{
tb.Error(this);
return false;
}
else
{
AnythingElse(t, tb);
}
}
else if (t.IsEndTag())
{
if (StringUtil.In(t.AsEndTag().Name(), "body", "html"))
{
AnythingElse(t, tb);
}
else
{
tb.Error(this);
return false;
}
}
else
{
AnythingElse(t, tb);
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
switch (t.Type)
{
case Token.TokenType.Character:
Token.Character c = t.AsCharacter();
if (c.Data.Equals(_nullString))
{
// todo confirm that check
tb.Error(this);
return false;
}
else if (IsWhitespace(c))
{
tb.ReconstructFormattingElements();
tb.Insert(c);
}
else
{
tb.ReconstructFormattingElements();
tb.Insert(c);
tb.FramesetOk(false);
}
break;
case Token.TokenType.Comment:
tb.Insert(t.AsComment());
break;
case Token.TokenType.Doctype:
tb.Error(this);
return false;
case Token.TokenType.StartTag:
Token.StartTag startTag = t.AsStartTag();
string name = startTag.Name();
if (name.Equals("html"))
{
tb.Error(this);
// merge attributes onto real html
Element html = tb.Stack.First.Value;
foreach (NSoup.Nodes.Attribute attribute in startTag.Attributes)
{
if (!html.HasAttr(attribute.Key))
{
html.Attributes.Add(attribute);
}
}
}
else if (StringUtil.In(name, "base", "basefont", "bgsound", "command", "link", "meta", "noframes", "script", "style", "title"))
{
return tb.Process(t, InHead);
}
else if (name.Equals("body"))
{
tb.Error(this);
LinkedList<Element> stack = tb.Stack;
if (stack.Count == 1 || (stack.Count > 2 && !stack.ElementAt(1).NodeName.Equals("body")))
{
// only in fragment case
return false; // ignore
}
else
{
tb.FramesetOk(false);
Element body = stack.ElementAt(1);
foreach (NSoup.Nodes.Attribute attribute in startTag.Attributes)
{
if (!body.HasAttr(attribute.Key))
{
body.Attributes.Add(attribute);
}
}
}
}
else if (name.Equals("frameset"))
{
tb.Error(this);
LinkedList<Element> stack = tb.Stack;
if (stack.Count == 1 || (stack.Count > 2 && !stack.ElementAt(1).NodeName.Equals("body")))
{
// only in fragment case
return false; // ignore
}
else if (!tb.FramesetOk())
{
return false; // ignore frameset
}
else
{
Element second = stack.ElementAt(1);
if (second.Parent != null)
second.Remove();
// pop up to html element
while (stack.Count > 1)
{
stack.RemoveLast();
}
tb.Insert(startTag);
tb.Transition(InFrameset);
}
}
else if (StringUtil.In(name,
"address", "article", "aside", "blockquote", "center", "details", "dir", "div", "dl",
"fieldset", "figcaption", "figure", "footer", "header", "hgroup", "menu", "nav", "ol",
"p", "section", "summary", "ul"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
}
else if (StringUtil.In(name, "h1", "h2", "h3", "h4", "h5", "h6"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
if (StringUtil.In(tb.CurrentElement.NodeName, "h1", "h2", "h3", "h4", "h5", "h6"))
{
tb.Error(this);
tb.Pop();
}
tb.Insert(startTag);
}
else if (StringUtil.In(name, "pre", "listing"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
// todo: ignore LF if next token
tb.FramesetOk(false);
}
else if (name.Equals("form"))
{
if (tb.FormElement != null)
{
tb.Error(this);
return false;
}
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
Element form = tb.Insert(startTag);
tb.FormElement = form;
}
else if (name.Equals("li"))
{
tb.FramesetOk(false);
LinkedList<Element> stack = tb.Stack;
for (int i = stack.Count - 1; i > 0; i--)
{
Element el = stack.ElementAt(i);
if (el.NodeName.Equals("li"))
{
tb.Process(new Token.EndTag("li"));
break;
}
if (tb.IsSpecial(el) && !StringUtil.In(el.NodeName, "address", "div", "p"))
break;
}
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
}
else if (StringUtil.In(name, "dd", "dt"))
{
tb.FramesetOk(false);
LinkedList<Element> stack = tb.Stack;
for (int i = stack.Count - 1; i > 0; i--)
{
Element el = stack.ElementAt(i);
if (StringUtil.In(el.NodeName, "dd", "dt"))
{
tb.Process(new Token.EndTag(el.NodeName));
break;
}
if (tb.IsSpecial(el) && !StringUtil.In(el.NodeName, "address", "div", "p"))
{
break;
}
}
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
}
else if (name.Equals("plaintext"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
tb.Tokeniser.Transition(TokeniserState.PlainText); // once in, never gets out
}
else if (name.Equals("button"))
{
if (tb.InButtonScope("button"))
{
// close and reprocess
tb.Error(this);
tb.Process(new Token.EndTag("button"));
tb.Process(startTag);
}
else
{
tb.ReconstructFormattingElements();
tb.Insert(startTag);
tb.FramesetOk(false);
}
}
else if (name.Equals("a"))
{
if (tb.GetActiveFormattingElement("a") != null)
{
tb.Error(this);
tb.Process(new Token.EndTag("a"));
// still on stack?
Element remainingA = tb.GetFromStack("a");
if (remainingA != null)
{
tb.RemoveFromActiveFormattingElements(remainingA);
tb.RemoveFromStack(remainingA);
}
}
tb.ReconstructFormattingElements();
Element a = tb.Insert(startTag);
tb.PushActiveFormattingElements(a);
}
else if (StringUtil.In(name,
"b", "big", "code", "em", "font", "i", "s", "small", "strike", "strong", "tt", "u"))
{
tb.ReconstructFormattingElements();
Element el = tb.Insert(startTag);
tb.PushActiveFormattingElements(el);
}
else if (name.Equals("nobr"))
{
tb.ReconstructFormattingElements();
if (tb.InScope("nobr"))
{
tb.Error(this);
tb.Process(new Token.EndTag("nobr"));
tb.ReconstructFormattingElements();
}
Element el = tb.Insert(startTag);
tb.PushActiveFormattingElements(el);
}
else if (StringUtil.In(name, "applet", "marquee", "object"))
{
tb.ReconstructFormattingElements();
tb.Insert(startTag);
tb.InsertMarkerToFormattingElements();
tb.FramesetOk(false);
}
else if (name.Equals("table"))
{
if (tb.Document.QuirksMode() != Document.QuirksModeEnum.Quirks && tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.Insert(startTag);
tb.FramesetOk(false);
tb.Transition(InTable);
}
else if (StringUtil.In(name, "area", "br", "embed", "img", "keygen", "wbr"))
{
tb.ReconstructFormattingElements();
tb.InsertEmpty(startTag);
tb.FramesetOk(false);
}
else if (name.Equals("input"))
{
tb.ReconstructFormattingElements();
Element el = tb.InsertEmpty(startTag);
if (!el.Attr("type").Equals("hidden", StringComparison.InvariantCultureIgnoreCase))
{
tb.FramesetOk(false);
}
}
else if (StringUtil.In(name, "param", "source", "track"))
{
tb.InsertEmpty(startTag);
}
else if (name.Equals("hr"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.InsertEmpty(startTag);
tb.FramesetOk(false);
}
else if (name.Equals("image"))
{
// we're not supposed to ask.
startTag.Name("img");
return tb.Process(startTag);
}
else if (name.Equals("isindex"))
{
// how much do we care about the early 90s?
tb.Error(this);
if (tb.FormElement != null)
{
return false;
}
tb.Tokeniser.AcknowledgeSelfClosingFlag();
tb.Process(new Token.StartTag("form"));
if (startTag.Attributes.ContainsKey("action"))
{
Element form = tb.FormElement;
form.Attr("action", startTag.Attributes["action"]);
}
tb.Process(new Token.StartTag("hr"));
tb.Process(new Token.StartTag("label"));
// hope you like english.
string prompt = startTag.Attributes.ContainsKey("prompt") ?
startTag.Attributes["prompt"] :
"This is a searchable index. Enter search keywords: ";
tb.Process(new Token.Character(prompt));
// input
Attributes inputAttribs = new Attributes();
foreach (NSoup.Nodes.Attribute attr in startTag.Attributes)
{
if (!StringUtil.In(attr.Key, "name", "action", "prompt"))
{
inputAttribs.Add(attr);
}
}
inputAttribs["name"] = "isindex";
tb.Process(new Token.StartTag("input", inputAttribs));
tb.Process(new Token.EndTag("label"));
tb.Process(new Token.StartTag("hr"));
tb.Process(new Token.EndTag("form"));
}
else if (name.Equals("textarea"))
{
tb.Insert(startTag);
// todo: If the next token is a U+000A LINE FEED (LF) character token, then ignore that token and move on to the next one. (Newlines at the start of textarea elements are ignored as an authoring convenience.)
tb.Tokeniser.Transition(TokeniserState.RcData);
tb.MarkInsertionMode();
tb.FramesetOk(false);
tb.Transition(Text);
}
else if (name.Equals("xmp"))
{
if (tb.InButtonScope("p"))
{
tb.Process(new Token.EndTag("p"));
}
tb.ReconstructFormattingElements();
tb.FramesetOk(false);
HandleRawText(startTag, tb);
}
else if (name.Equals("iframe"))
{
tb.FramesetOk(false);
HandleRawText(startTag, tb);
}
else if (name.Equals("noembed"))
{
// also handle noscript if script enabled
HandleRawText(startTag, tb);
}
else if (name.Equals("select"))
{
tb.ReconstructFormattingElements();
tb.Insert(startTag);
tb.FramesetOk(false);
HtmlTreeBuilderState state = tb.State;
if (state.Equals(InTable) || state.Equals(InCaption) || state.Equals(InTableBody) || state.Equals(InRow) || state.Equals(InCell))
{
tb.Transition(InSelectInTable);
}
else
{
tb.Transition(InSelect);
}
}
else if (StringUtil.In("optgroup", "option"))
{
if (tb.CurrentElement.NodeName.Equals("option"))
{
tb.Process(new Token.EndTag("option"));
}
tb.ReconstructFormattingElements();
tb.Insert(startTag);
}
else if (StringUtil.In("rp", "rt"))
{
if (tb.InScope("ruby"))
{
tb.GenerateImpliedEndTags();
if (!tb.CurrentElement.NodeName.Equals("ruby"))
{
tb.Error(this);
tb.PopStackToBefore("ruby"); // i.e. close up to but not include name
}
tb.Insert(startTag);
}
}
else if (name.Equals("math"))
{
tb.ReconstructFormattingElements();
// todo: handle A start tag whose tag name is "math" (i.e. foreign, mathml)
tb.Insert(startTag);
tb.Tokeniser.AcknowledgeSelfClosingFlag();
}
else if (name.Equals("svg"))
{
tb.ReconstructFormattingElements();
// todo: handle A start tag whose tag name is "svg" (xlink, svg)
tb.Insert(startTag);
tb.Tokeniser.AcknowledgeSelfClosingFlag();
}
else if (StringUtil.In(name,
"caption", "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th", "thead", "tr"))
{
tb.Error(this);
return false;
}
else
{
tb.ReconstructFormattingElements();
tb.Insert(startTag);
}
break;
case Token.TokenType.EndTag:
Token.EndTag endTag = t.AsEndTag();
name = endTag.Name();
if (name.Equals("body"))
{
if (!tb.InScope("body"))
{
tb.Error(this);
return false;
}
else
{
// todo: error if stack contains something not dd, dt, li, optgroup, option, p, rp, rt, tbody, td, tfoot, th, thead, tr, body, html
tb.Transition(AfterBody);
}
}
else if (name.Equals("html"))
{
bool notIgnored = tb.Process(new Token.EndTag("body"));
if (notIgnored)
{
return tb.Process(endTag);
}
}
else if (StringUtil.In(name,
"address", "article", "aside", "blockquote", "button", "center", "details", "dir", "div",
"dl", "fieldset", "figcaption", "figure", "footer", "header", "hgroup", "listing", "menu",
"nav", "ol", "pre", "section", "summary", "ul"))
{
// todo: refactor these lookups
if (!tb.InScope(name))
{
// nothing to close
tb.Error(this);
return false;
}
else
{
tb.GenerateImpliedEndTags();
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
}
}
else if (name.Equals("form"))
{
Element currentForm = tb.FormElement;
tb.FormElement = null;
if (currentForm == null || !tb.InScope(name))
{
tb.Error(this);
return false;
}
else
{
tb.GenerateImpliedEndTags();
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
// remove currentForm from stack. will shift anything under up.
tb.RemoveFromStack(currentForm);
}
}
else if (name.Equals("p"))
{
if (!tb.InButtonScope(name))
{
tb.Error(this);
tb.Process(new Token.StartTag(name)); // if no p to close, creates an empty <p></p>
return tb.Process(endTag);
}
else
{
tb.GenerateImpliedEndTags(name);
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
}
}
else if (name.Equals("li"))
{
if (!tb.InListItemScope(name))
{
tb.Error(this);
return false;
}
else
{
tb.GenerateImpliedEndTags(name);
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
}
}
else if (StringUtil.In(name, "dd", "dt"))
{
if (!tb.InScope(name))
{
tb.Error(this);
return false;
}
else
{
tb.GenerateImpliedEndTags(name);
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
}
}
else if (StringUtil.In(name, "h1", "h2", "h3", "h4", "h5", "h6"))
{
if (!tb.InScope(new string[] { "h1", "h2", "h3", "h4", "h5", "h6" }))
{
tb.Error(this);
return false;
}
else
{
tb.GenerateImpliedEndTags(name);
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose("h1", "h2", "h3", "h4", "h5", "h6");
}
}
else if (name.Equals("sarcasm"))
{
// *sigh*
return AnyOtherEndTag(t, tb);
}
else if (StringUtil.In(name,
"a", "b", "big", "code", "em", "font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u"))
{
// Adoption Agency Algorithm.
//OUTER:
for (int i = 0; i < 8; i++)
{
Element formatEl = tb.GetActiveFormattingElement(name);
if (formatEl == null)
{
return AnyOtherEndTag(t, tb);
}
else if (!tb.OnStack(formatEl))
{
tb.Error(this);
tb.RemoveFromActiveFormattingElements(formatEl);
return true;
}
else if (!tb.InScope(formatEl.NodeName))
{
tb.Error(this);
return false;
}
else if (tb.CurrentElement != formatEl)
{
tb.Error(this);
}
Element furthestBlock = null;
Element commonAncestor = null;
bool seenFormattingElement = false;
LinkedList<Element> stack = tb.Stack;
for (int si = 0; si < stack.Count; si++)
{
Element el = stack.ElementAt(si);
if (el == formatEl)
{
commonAncestor = stack.ElementAt(si - 1);
seenFormattingElement = true;
}
else if (seenFormattingElement && tb.IsSpecial(el))
{
furthestBlock = el;
break;
}
}
if (furthestBlock == null)
{
tb.PopStackToClose(formatEl.NodeName);
tb.RemoveFromActiveFormattingElements(formatEl);
return true;
}
// todo: Let a bookmark note the position of the formatting element in the list of active formatting elements relative to the elements on either side of it in the list.
// does that mean: int pos of format el in list?
Element node = furthestBlock;
Element lastNode = furthestBlock;
for (int j = 0; j < 3; j++)
{
if (tb.OnStack(node))
node = tb.AboveOnStack(node);
if (!tb.IsInActiveFormattingElements(node))
{ // note no bookmark check
tb.RemoveFromStack(node);
continue;
}
else if (node == formatEl)
{
break;
}
Element replacement = new Element(Tag.ValueOf(node.NodeName), tb.BaseUri);
tb.ReplaceActiveFormattingElement(node, replacement);
tb.ReplaceOnStack(node, replacement);
node = replacement;
if (lastNode == furthestBlock)
{
// todo: move the aforementioned bookmark to be immediately after the new node in the list of active formatting elements.
// not getting how this bookmark both straddles the element above, but is inbetween here...
}
if (lastNode.Parent != null)
{
lastNode.Remove();
}
node.AppendChild(lastNode);
lastNode = node;
}
if (StringUtil.In(commonAncestor.NodeName, "table", "tbody", "tfoot", "thead", "tr"))
{
if (lastNode.Parent != null)
{
lastNode.Remove();
}
tb.InsertInFosterParent(lastNode);
}
else
{
if (lastNode.Parent != null)
{
lastNode.Remove();
}
commonAncestor.AppendChild(lastNode);
}
Element adopter = new Element(Tag.ValueOf(name), tb.BaseUri);
Node[] childNodes = furthestBlock.ChildNodes.ToArray();
foreach (Node childNode in childNodes)
{
adopter.AppendChild(childNode); // append will reparent. thus the clone to avvoid concurrent mod.
}
furthestBlock.AppendChild(adopter);
tb.RemoveFromActiveFormattingElements(formatEl);
// todo: insert the new element into the list of active formatting elements at the position of the aforementioned bookmark.
tb.RemoveFromStack(formatEl);
tb.InsertOnStackAfter(furthestBlock, adopter);
}
}
else if (StringUtil.In(name, "applet", "marquee", "object"))
{
if (!tb.InScope("name"))
{
if (!tb.InScope(name))
{
tb.Error(this);
return false;
}
tb.GenerateImpliedEndTags();
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
tb.ClearFormattingElementsToLastMarker();
}
}
else if (name.Equals("br"))
{
tb.Error(this);
tb.Process(new Token.StartTag("br"));
return false;
}
else
{
return AnyOtherEndTag(t, tb);
}
break;
case Token.TokenType.EOF:
// todo: error if stack contains something not dd, dt, li, p, tbody, td, tfoot, th, thead, tr, body, html
// stop parsing
break;
default:
break;
}
return true;
}
protected void HandleRawText(Token.StartTag startTag, HtmlTreeBuilder tb)
{
tb.Insert(startTag);
tb.Tokeniser.Transition(TokeniserState.RawText);
tb.MarkInsertionMode();
tb.Transition(Text);
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsDoctype())
{
tb.Error(this);
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("html"))
{
return tb.Process(t, InBody);
}
else if (t.IsEndTag() && t.AsEndTag().Name().Equals("noscript"))
{
tb.Pop();
tb.Transition(InHead);
}
else if (IsWhitespace(t) || t.IsComment() || (t.IsStartTag() && StringUtil.In(t.AsStartTag().Name(),
"basefont", "bgsound", "link", "meta", "noframes", "style")))
{
return tb.Process(t, InHead);
}
else if (t.IsEndTag() && t.AsEndTag().Name().Equals("br"))
{
return AnythingElse(t, tb);
}
else if ((t.IsStartTag() && StringUtil.In(t.AsStartTag().Name(), "head", "noscript")) || t.IsEndTag())
{
tb.Error(this);
return false;
}
else
{
return AnythingElse(t, tb);
}
return true;
}
private void CloseCell(HtmlTreeBuilder tb)
{
if (tb.InTableScope("td"))
{
tb.Process(new Token.EndTag("td"));
}
else
{
tb.Process(new Token.EndTag("th")); // only here if th or td in scope
}
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
switch (t.Type)
{
case Token.TokenType.Character:
Token.Character c = t.AsCharacter();
if (c.Data.ToString().Equals(_nullString))
{
tb.Error(this);
return false;
}
else
{
tb.Insert(c);
}
break;
case Token.TokenType.Comment:
tb.Insert(t.AsComment());
break;
case Token.TokenType.Doctype:
tb.Error(this);
return false;
case Token.TokenType.StartTag:
Token.StartTag start = t.AsStartTag();
string name = start.Name();
if (name.Equals("html"))
return tb.Process(start, InBody);
else if (name.Equals("option"))
{
tb.Process(new Token.EndTag("option"));
tb.Insert(start);
}
else if (name.Equals("optgroup"))
{
if (tb.CurrentElement.NodeName.Equals("option"))
{
tb.Process(new Token.EndTag("option"));
}
else if (tb.CurrentElement.NodeName.Equals("optgroup"))
{
tb.Process(new Token.EndTag("optgroup"));
}
tb.Insert(start);
}
else if (name.Equals("select"))
{
tb.Error(this);
return tb.Process(new Token.EndTag("select"));
}
else if (StringUtil.In(name, "input", "keygen", "textarea"))
{
tb.Error(this);
if (!tb.InSelectScope("select"))
{
return false; // frag
}
tb.Process(new Token.EndTag("select"));
return tb.Process(start);
}
else if (name.Equals("script"))
{
return tb.Process(t, InHead);
}
else
{
return AnythingElse(t, tb);
}
break;
case Token.TokenType.EndTag:
Token.EndTag end = t.AsEndTag();
name = end.Name();
if (name.Equals("optgroup"))
{
if (tb.CurrentElement.NodeName.Equals("option") && tb.AboveOnStack(tb.CurrentElement) != null && tb.AboveOnStack(tb.CurrentElement).NodeName.Equals("optgroup"))
{
tb.Process(new Token.EndTag("option"));
}
if (tb.CurrentElement.NodeName.Equals("optgroup"))
{
tb.Pop();
}
else
{
tb.Error(this);
}
}
else if (name.Equals("option"))
{
if (tb.CurrentElement.NodeName.Equals("option"))
{
tb.Pop();
}
else
{
tb.Error(this);
}
}
else if (name.Equals("select"))
{
if (!tb.InSelectScope(name))
{
tb.Error(this);
return false;
}
else
{
tb.PopStackToClose(name);
tb.ResetInsertionMode();
}
}
else
{
return AnythingElse(t, tb);
}
break;
case Token.TokenType.EOF:
if (!tb.CurrentElement.NodeName.Equals("html"))
{
tb.Error(this);
}
break;
default:
return AnythingElse(t, tb);
}
return true;
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
return tb.Process(t, InBody);
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsEndTag())
{
Token.EndTag endTag = t.AsEndTag();
String name = endTag.Name();
if (StringUtil.In(name, "td", "th"))
{
if (!tb.InTableScope(name))
{
tb.Error(this);
tb.Transition(InRow); // might not be in scope if empty: <td /> and processing fake end tag
return false;
}
tb.GenerateImpliedEndTags();
if (!tb.CurrentElement.NodeName.Equals(name))
{
tb.Error(this);
}
tb.PopStackToClose(name);
tb.ClearFormattingElementsToLastMarker();
tb.Transition(InRow);
}
else if (StringUtil.In(name, "body", "caption", "col", "colgroup", "html"))
{
tb.Error(this);
return false;
}
else if (StringUtil.In(name, "table", "tbody", "tfoot", "thead", "tr"))
{
if (!tb.InTableScope(name))
{
tb.Error(this);
return false;
}
CloseCell(tb);
return tb.Process(t);
}
else
{
return AnythingElse(t, tb);
}
}
else if (t.IsStartTag() &&
StringUtil.In(t.AsStartTag().Name(),
"caption", "col", "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"))
{
if (!(tb.InTableScope("td") || tb.InTableScope("th")))
{
tb.Error(this);
return false;
}
CloseCell(tb);
return tb.Process(t);
}
else
{
return AnythingElse(t, tb);
}
return true;
}
private bool HandleMissingTr(Token t, HtmlTreeBuilder tb)
{
bool processed = tb.Process(new Token.EndTag("tr"));
if (processed)
{
return tb.Process(t);
}
else
return false;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsStartTag())
{
Token.StartTag startTag = t.AsStartTag();
String name = startTag.Name();
if (StringUtil.In(name, "th", "td"))
{
tb.ClearStackToTableRowContext();
tb.Insert(startTag);
tb.Transition(InCell);
tb.InsertMarkerToFormattingElements();
}
else if (StringUtil.In(name, "caption", "col", "colgroup", "tbody", "tfoot", "thead", "tr"))
{
return HandleMissingTr(t, tb);
}
else
{
return AnythingElse(t, tb);
}
}
else if (t.IsEndTag())
{
Token.EndTag endTag = t.AsEndTag();
string name = endTag.Name();
if (name.Equals("tr"))
{
if (!tb.InTableScope(name))
{
tb.Error(this); // frag
return false;
}
tb.ClearStackToTableRowContext();
tb.Pop(); // tr
tb.Transition(InTableBody);
}
else if (name.Equals("table"))
{
return HandleMissingTr(t, tb);
}
else if (StringUtil.In(name, "tbody", "tfoot", "thead"))
{
if (!tb.InTableScope(name))
{
tb.Error(this);
return false;
}
tb.Process(new Token.EndTag("tr"));
return tb.Process(t);
}
else if (StringUtil.In(name, "body", "caption", "col", "colgroup", "html", "td", "th"))
{
tb.Error(this);
return false;
}
else
{
return AnythingElse(t, tb);
}
}
else
{
return AnythingElse(t, tb);
}
return true;
}
private bool ExitTableBody(Token t, HtmlTreeBuilder tb)
{
if (!(tb.InTableScope("tbody") || tb.InTableScope("thead") || tb.InScope("tfoot")))
{
// frag case
tb.Error(this);
return false;
}
tb.ClearStackToTableBodyContext();
tb.Process(new Token.EndTag(tb.CurrentElement.NodeName)); // tbody, tfoot, thead
return tb.Process(t);
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
tb.Process(new Token.EndTag("head"));
return tb.Process(t);
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
tb.Error(this);
return false;
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
tb.Error(this);
tb.Process(new Token.EndTag("noscript"));
return tb.Process(t);
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsStartTag() && StringUtil.In(t.AsStartTag().Name(), "caption", "table", "tbody", "tfoot", "thead", "tr", "td", "th"))
{
tb.Error(this);
tb.Process(new Token.EndTag("select"));
return tb.Process(t);
}
else if (t.IsEndTag() && StringUtil.In(t.AsEndTag().Name(), "caption", "table", "tbody", "tfoot", "thead", "tr", "td", "th"))
{
tb.Error(this);
if (tb.InTableScope(t.AsEndTag().Name()))
{
tb.Process(new Token.EndTag("select"));
return (tb.Process(t));
}
else
{
return false;
}
}
else
{
return tb.Process(t, InSelect);
}
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
tb.Process(new Token.StartTag("body"));
tb.FramesetOk(true);
return tb.Process(t);
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
return tb.Process(t, InBody);
}
else if (t.IsComment())
{
tb.Insert(t.AsComment()); // into html node
}
else if (t.IsDoctype())
{
tb.Error(this);
return false;
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("html"))
{
return tb.Process(t, InBody);
}
else if (t.IsEndTag() && t.AsEndTag().Name().Equals("html"))
{
if (tb.IsFragmentParsing())
{
tb.Error(this);
return false;
}
else
{
tb.Transition(AfterAfterBody);
}
}
else if (t.IsEOF())
{
// chillax! we're done
}
else
{
tb.Error(this);
tb.Transition(InBody);
return tb.Process(t);
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
tb.Insert(t.AsCharacter());
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype())
{
tb.Error(this);
return false;
}
else if (t.IsStartTag())
{
Token.StartTag start = t.AsStartTag();
string name = start.Name();
if (name.Equals("html"))
{
return tb.Process(start, InBody);
}
else if (name.Equals("frameset"))
{
tb.Insert(start);
}
else if (name.Equals("frame"))
{
tb.InsertEmpty(start);
}
else if (name.Equals("noframes"))
{
return tb.Process(start, InHead);
}
else
{
tb.Error(this);
return false;
}
}
else if (t.IsEndTag() && t.AsEndTag().Name().Equals("frameset"))
{
if (tb.CurrentElement.NodeName.Equals("html"))
{ // frag
tb.Error(this);
return false;
}
else
{
tb.Pop();
if (!tb.IsFragmentParsing() && !tb.CurrentElement.NodeName.Equals("frameset"))
{
tb.Transition(AfterFrameset);
}
}
}
else if (t.IsEOF())
{
if (!tb.CurrentElement.NodeName.Equals("html"))
{
tb.Error(this);
return true;
}
}
else
{
tb.Error(this);
return false;
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
tb.Insert(t.AsCharacter());
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype())
{
tb.Error(this);
return false;
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("html"))
{
return tb.Process(t, InBody);
}
else if (t.IsEndTag() && t.AsEndTag().Name().Equals("html"))
{
tb.Transition(AfterAfterFrameset);
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("noframes"))
{
return tb.Process(t, InHead);
}
else if (t.IsEOF())
{
// cool your heels, we're complete
}
else
{
tb.Error(this);
return false;
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (IsWhitespace(t))
{
return true;
}
else if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype())
{
tb.Error(this);
return false;
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("html"))
{
return InBody.Process(t, tb); // does not transition
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("head"))
{
Element head = tb.Insert(t.AsStartTag());
tb.HeadElement = head;
tb.Transition(InHead);
}
else if (t.IsEndTag() && (StringUtil.In(t.AsEndTag().Name(), "head", "body", "html", "br")))
{
tb.Process(new Token.StartTag("head"));
return tb.Process(t);
}
else if (t.IsEndTag())
{
tb.Error(this);
return false;
}
else
{
tb.Process(new Token.StartTag("head"));
return tb.Process(t);
}
return true;
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
if (t.IsComment())
{
tb.Insert(t.AsComment());
}
else if (t.IsDoctype() || IsWhitespace(t) || (t.IsStartTag() && t.AsStartTag().Name().Equals("html")))
{
return tb.Process(t, InBody);
}
else if (t.IsEOF())
{
// nice work chuck
}
else if (t.IsStartTag() && t.AsStartTag().Name().Equals("noframes"))
{
return tb.Process(t, InHead);
}
else
{
tb.Error(this);
return false;
}
return true;
}
// static parse functions below
/// <summary>
/// Parse HTML into a Document.
/// </summary>
/// <param name="html">HTML to parse</param>
/// <param name="baseUri">base URI of document (i.e. original fetch location), for resolving relative URLs.</param>
/// <returns>parsed Document</returns>
public static Document Parse(string html, string baseUri)
{
HtmlTreeBuilder treeBuilder = new HtmlTreeBuilder();
return treeBuilder.Parse(html, baseUri, ParseErrorList.NoTracking());
}
public override bool Process(Token t, HtmlTreeBuilder tb)
{
return true;
// todo: implement. Also; how do we get here?
}
// static parse functions below
/// <summary>
/// Parse HTML into a Document.
/// </summary>
/// <param name="html">HTML to parse</param>
/// <param name="baseUri">base URI of document (i.e. original fetch location), for resolving relative URLs.</param>
/// <returns>parsed Document</returns>
public static Document Parse(string html, string baseUri)
{
HtmlTreeBuilder treeBuilder = new HtmlTreeBuilder();
return(treeBuilder.Parse(html, baseUri, ParseErrorList.NoTracking()));
}
private bool AnythingElse(Token t, HtmlTreeBuilder tb)
{
bool processed = tb.Process(new Token.EndTag("colgroup"));
if (processed) // only ignored in frag case
{
return tb.Process(t);
}
return true;
}
