internal void OnScriptState(string scriptType, NameToken nameToken) {
string scriptQualifiedName = _cs.GetSubstringAt(nameToken.QualifiedName.Start, nameToken.QualifiedName.Length);
string endScript = string.Concat("</", scriptQualifiedName);
ITextRange range = FindEndOfBlock(endScript, simpleSearch: true);
ScriptBlockFound?.Invoke(this, new HtmlParserBlockRangeEventArgs(range, scriptType));
}
internal void OnStyleState(NameToken nameToken) {
string styleQualifiedName = _cs.GetSubstringAt(nameToken.QualifiedName.Start, nameToken.QualifiedName.Length);
string endStyle = string.Concat("</", styleQualifiedName);
// here is interesting and somewhat odd piece... <style> and <script> blocks are artifacts too.
// However, they cannot be handled through preprocessor since they are regular markup elements.
// Worse still, <script runat="server"> is ASP.NET artifact... But since they are really
// markup elements, we'll have to deal with them here.
var range = FindEndOfBlock(endStyle, simpleSearch: true);
StyleBlockFound?.Invoke(this, new HtmlParserBlockRangeEventArgs(range, String.Empty));
}
public ElementNode(ElementNode parent, int openAngleBracketPosition, NameToken nameToken, int maxEnd) {
Parent = parent;
if (nameToken.HasColon)
StartTag = new TagNodeWithPrefix(this, openAngleBracketPosition, nameToken, maxEnd);
else
StartTag = new TagNode(this, openAngleBracketPosition, nameToken, maxEnd);
VirtualEnd = maxEnd;
Properties = new PropertyDictionary();
}
public TagNode(ElementNode parent, int openAngleBracketPosition, NameToken nameToken, int maxEnd) {
NameToken = nameToken;
_name = nameToken.HasName() ? parent.GetText(nameToken.NameRange) : String.Empty;
_start = openAngleBracketPosition;
_end = maxEnd;
IsClosed = false;
IsShorthand = false;
}
public override string ToString()
{
if (NameToken != null && ValueToken != null)
{
return(String.Format(CultureInfo.CurrentCulture, "{0} = {1}", NameToken.ToString(), ValueToken.ToString()));
}
else if (NameToken != null)
{
return(NameToken.ToString());
}
else if (ValueToken != null)
{
return(ValueToken.ToString());
}
return("?");
}
public void Shift(int offset)
{
if (NameToken != null)
{
NameToken.Shift(offset);
}
if (EqualsSign >= 0)
{
EqualsSign += offset;
}
if (ValueToken != null)
{
ValueToken.Shift(offset);
}
}
public void ShiftStartingFrom(int start, int offset)
{
if (NameToken != null && NameToken.Start >= start)
{
Debug.Assert(!(start > NameToken.Start && start < NameToken.End), "Can't shift when start position is in the middle of a token");
NameToken.Shift(offset);
}
if (EqualsSign >= start)
{
EqualsSign += offset;
}
if (ValueToken != null)
{
if (ValueToken.Start >= start)
{
var composite = ValueToken as CompositeAttributeValueToken;
if (composite != null)
{
composite.ShiftStartingFrom(start, offset);
}
else if (ValueToken.Start >= start)
{
ValueToken.Shift(offset);
}
}
else if (ValueToken.Contains(start))
{
var expandable = ValueToken as IExpandableTextRange;
if (expandable != null)
{
expandable.Expand(0, offset);
}
}
}
}
/// <summary>Begins element end tag processing. Called exclusively by tree builder.
/// when it discovers </name sequence.</summary>
internal void OpenEndTag(int position, NameToken nameToken, int maxEnd) {
EndTag = new TagNode(this, position, nameToken, maxEnd);
}
public TagNodeWithPrefix(ElementNode parent, int openAngleBracketPosition, NameToken nameToken, int maxEnd)
: base(parent, openAngleBracketPosition, nameToken, maxEnd) {
_prefix = nameToken.HasPrefix() ? parent.GetText(nameToken.PrefixRange) : String.Empty;
}
public HtmlParserOpenTagEventArgs(int openAngleBracketPosition, NameToken nameToken, bool isDocType, bool isXmlPi) {
NameToken = nameToken;
OpenAngleBracketPosition = openAngleBracketPosition;
IsDocType = isDocType;
IsXmlPi = isXmlPi;
}
public HtmlParserOpenTagEventArgs(int openAngleBracketPosition, NameToken nameToken)
: this(openAngleBracketPosition, nameToken, false, false) {
}
// Similar to GetNextToken but also handles namespaces
// It is typically called when parser is entering start tag.
// Note that we do not allow artifacts in names
public NameToken GetNameToken(int tagEnd = Int32.MaxValue, bool artifactTag = false)
{
// < at the end of file or missing tag name
if (_cs.IsEndOfStream() || _cs.IsAtString() || _cs.IsWhiteSpace() || _cs.CurrentChar == '=' || _cs.CurrentChar == '/')
{
return(null);
}
int start = _cs.Position;
int colonPos = -1;
// Technically namespace and name starts with ANSI letter or underscore. Subsequent characters
// can include digits except if it is second character after leading underscore, i.e. _2 is illegal
// and also all underscores are illegal. However, we'll leave validation to the validator and will
// only handle : and = as separators
while (!_cs.IsEndOfStream() && _cs.Position < tagEnd && !_cs.IsWhiteSpace() && _cs.CurrentChar != '=' && _cs.CurrentChar != '/')
{
if (!artifactTag && _cs.IsAtTagDelimiter())
{
break;
}
if (colonPos < 0 && _cs.CurrentChar == ':')
{
colonPos = _cs.Position;
}
_cs.MoveToNextChar();
}
bool hasPrefix = colonPos > start;
bool hasName = false;
int nameStart = -1;
int nameEnd = -1;
if (hasPrefix || colonPos >= 0)
{
hasName = _cs.Position > colonPos + 1;
if (hasName)
{
nameStart = colonPos + 1;
nameEnd = _cs.Position;
}
}
else
{
hasName = _cs.Position > start;
if (hasName)
{
nameStart = start;
nameEnd = _cs.Position;
}
}
if (!hasPrefix && colonPos < 0 && !hasName)
{
return(null);
}
if (hasPrefix || colonPos >= 0)
{
return(NameToken.Create(start, colonPos - start, colonPos, nameStart, nameEnd - nameStart));
}
else
{
return(NameToken.Create(nameStart, nameEnd - nameStart));
}
}
