/// <summary>
/// Create a new comment from another.
/// </summary>
public HComment(HComment other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
this.value = other.value;
}
/// <summary>
/// Deserialize as a list of nodes
/// </summary>
public IEnumerable <HNode> Deserialize(TextReader reader, Func <Exception, bool> errorHandler = null)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// Create the parser
var parser = new HParser(reader);
parser.RemoveUnknownOrInvalidEntities = this.RemoveUnknownOrInvalidEntities;
var token = ParseNext(parser, errorHandler);
Stack <HElement> opened = new Stack <HElement>();
HXmlDeclaration currentXDecl = null;
String tag;
HNode tokenToReturns = null;
while (token != null)
{
switch (token.TokenType)
{
case ParsedTokenType.Text:
var htxt = new HText(HEntity.HtmlDecode(((ParsedText)token).Text, RemoveUnknownOrInvalidEntities));
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, htxt, errorHandler);
}
else
{
tokenToReturns = htxt;
}
break;
case ParsedTokenType.CData:
var hcd = new HCData(((ParsedCData)token).Text);
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, hcd, errorHandler);
}
else
{
tokenToReturns = hcd;
}
break;
case ParsedTokenType.Comment:
var hcom = new HComment(HEntity.HtmlDecode(((ParsedComment)token).Text, RemoveUnknownOrInvalidEntities));
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, hcom, errorHandler);
}
else
{
tokenToReturns = hcom;
}
break;
case ParsedTokenType.OpenTag:
opened.Push(new HElement(((ParsedTag)token).TagName));
break;
case ParsedTokenType.AutoClosedTag:
System.Diagnostics.Debug.Assert(opened.Count > 0, "Opened tags are empty when receiving AutoClosedTag.");
System.Diagnostics.Debug.Assert(opened.Peek().Name == ((ParsedTag)token).TagName, "AutoClosedTag and opened element are not same tag name.");
var actag = opened.Pop();
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, actag, errorHandler);
}
else
{
tokenToReturns = actag;
}
break;
case ParsedTokenType.CloseTag:
System.Diagnostics.Debug.Assert(opened.Count > 0, "Opened tags are empty when receiving CloseTag.");
System.Diagnostics.Debug.Assert(opened.Peek().Name == ((ParsedTag)token).TagName, "CloseTag and opened element are not same tag name.");
// Tag with text content
String tagName = opened.Peek().Name;
if (IsRawElement(tagName) || IsEscapableRawElement(tagName))
{
token = ParseContentTextNext(tagName, parser, errorHandler);
continue;
}
break;
case ParsedTokenType.EndTag:
tag = ((ParsedTag)token).TagName;
HElement helm;
// Close all elements that not matching the tag
while (opened.Count > 0 && !String.Equals(opened.Peek().Name, tag, StringComparison.OrdinalIgnoreCase))
{
helm = opened.Pop();
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, helm, errorHandler);
}
else
{
yield return(helm);
}
}
// If we are opened tag, then close it because we find our element
if (opened.Count > 0)
{
helm = opened.Pop();
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, helm, errorHandler);
}
else
{
yield return(helm);
}
}
break;
case ParsedTokenType.OpenProcessInstruction:
if (currentXDecl != null)
{
while ((token = ParseNext(parser, errorHandler)) != null && token.TokenType != ParsedTokenType.CloseProcessInstruction)
{
;
}
ProcessError(new ParseError("XML declaration already opened."), errorHandler);
}
tag = ((ParsedTag)token).TagName;
if (!String.Equals("xml", tag, StringComparison.OrdinalIgnoreCase))
{
while ((token = ParseNext(parser, errorHandler)) != null && token.TokenType != ParsedTokenType.CloseProcessInstruction)
{
;
}
ProcessError(new ParseError(String.Format("Unexpected '{0}' process instruction.", tag)), errorHandler);
}
currentXDecl = new HXmlDeclaration(null, null, null);
break;
case ParsedTokenType.CloseProcessInstruction:
if (currentXDecl == null)
{
ProcessError(new ParseError("No XML declaration opened."), errorHandler);
}
else
{
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, currentXDecl, errorHandler);
}
else
{
tokenToReturns = currentXDecl;
}
}
currentXDecl = null;
break;
case ParsedTokenType.Doctype:
var vs = ((ParsedDoctype)token).Values ?? new String[0];
var hdt = new HDocumentType(
vs.Length > 0 ? vs[0] : null,
vs.Length > 1 ? vs[1] : null,
vs.Length > 2 ? vs[2] : null,
vs.Length > 3 ? vs[3] : null
);
if (opened.Count > 0)
{
ProtectAddOnPeek(opened, hdt, errorHandler);
}
else
{
tokenToReturns = hdt;
}
break;
case ParsedTokenType.Attribute:
var attr = (ParsedAttribute)token;
// Xml declaration ?
if (currentXDecl != null)
{
if (String.Equals("version", attr.Name, StringComparison.OrdinalIgnoreCase))
{
currentXDecl.Version = attr.Value;
}
else if (String.Equals("encoding", attr.Name, StringComparison.OrdinalIgnoreCase))
{
currentXDecl.Encoding = attr.Value;
}
else if (String.Equals("standalone", attr.Name, StringComparison.OrdinalIgnoreCase))
{
currentXDecl.Standalone = attr.Value;
}
else
{
ProcessError(new ParseError(String.Format("Invalid XML declaration attribute : ''", attr.Name)), errorHandler);
}
}
System.Diagnostics.Debug.Assert(opened.Count > 0, "No element opened for the attribtue.");
ProtectAddOnPeek(opened, new HAttribute(attr.Name, attr.Value), errorHandler);
break;
//default:
// break;
}
// Returns a token if we have one
if (tokenToReturns != null)
{
yield return(tokenToReturns);
tokenToReturns = null;
}
// Next token
token = ParseNext(parser, errorHandler);
}
// Close all opened elements
while (opened.Count > 0)
{
yield return(opened.Pop());
}
}
/// <summary>
/// Serialize a comment
/// </summary>
protected virtual void SerializeComment(HComment comment, TextWriter writer)
{
writer.Write("<!-- ");
writer.Write(HEntity.HtmlEncode(comment.Value));
writer.Write(" -->");
}