/// <summary>
/// Adds the given entity to the DTD container.
/// </summary>
/// <param name="token">The entity token to add.</param>
void AddEntity(DtdEntityToken token)
{
if (token.IsExtern)
{
token.Value = GetText(token.SystemIdentifier);
}
if (token.IsParameter)
{
_result.AddParameter(token.ToElement());
}
else
{
_result.AddEntity(token.ToElement());
}
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-entity-decl.
/// </summary>
/// <param name="c">The next input character.</param>
DtdToken EntityDeclaration(Char c)
{
var decl = new DtdEntityToken();
var canContinue = false;
if (c.IsSpaceCharacter())
{
canContinue = DeclarationNameBefore(_src.Next, decl);
}
else if (c == Specification.EOF)
{
throw new ArgumentException("The document ended unexpectedly.");
}
else
{
RaiseErrorOccurred(ErrorCode.UndefinedMarkupDeclaration);
canContinue = DeclarationNameBefore(c, decl);
}
if (canContinue && decl.Name == "%")
{
decl.IsParameter = true;
canContinue = DeclarationNameBefore(_src.Next, decl);
}
c = _src.Current;
if (canContinue)
{
if (_src.ContinuesWith("SYSTEM"))
{
_src.Advance(5);
decl.IsExtern = true;
do
{
c = _src.Next;
}while (c.IsSpaceCharacter());
}
_stringBuffer.Clear();
decl.Value = EntityDeclarationBeforeValue(c);
c = _src.Next;
}
return(EntityDeclarationAfter(c, decl));
}
DtdToken EntityDeclarationAfter(Char c, DtdEntityToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.EOF)
{
throw new ArgumentException("The document ended unexpectedly.");
}
else if (c == Specification.GT)
{
return(decl);
}
else if (decl.IsExtern && String.IsNullOrEmpty(decl.ExternNotation))
{
if (_src.ContinuesWith("NDATA"))
{
_src.Advance(4);
c = _src.Next;
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c.IsNameStart())
{
_stringBuffer.Clear();
do
{
_stringBuffer.Append(c);
c = _src.Next;
}while (c.IsName());
decl.ExternNotation = _stringBuffer.ToString();
return(EntityDeclarationAfter(c, decl));
}
}
}
throw new ArgumentException("Declaration invalid.");
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
DtdToken CommentEnd(Char c)
{
if (c == Specification.GT)
{
return new DtdCommentToken()
{
Data = _stringBuffer.ToString()
}
}
;
throw Errors.Xml(ErrorCode.XmlInvalidComment);
}
#endregion
#region Declaration Name
Boolean DeclarationNameBefore(Char c, DtdToken decl)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
if (c == Specification.PERCENT)
{
PEReference(_stream.Next);
return(DeclarationNameBefore(_stream.Current, decl));
}
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return(DeclarationName(_stream.Next, decl));
}
return(false);
}
Boolean DeclarationName(Char c, DtdToken decl)
{
while (c.IsXmlName())
{
_stringBuffer.Append(c);
c = _stream.Next;
}
if (c == Specification.PERCENT)
{
PEReference(_stream.Next);
return(DeclarationName(_stream.Current, decl));
}
decl.Name = _stringBuffer.ToString();
_stringBuffer.Clear();
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
return(c.IsSpaceCharacter());
}
#endregion
#region Entity Declaration
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-entity-decl.
/// </summary>
/// <param name="c">The next input character.</param>
DtdToken EntityDeclaration(Char c)
{
var decl = new DtdEntityToken();
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
}
if (c == Specification.PERCENT)
{
decl.IsParameter = true;
if (!_stream.Next.IsSpaceCharacter())
{
throw Errors.Xml(ErrorCode.CharacterReferenceInvalidCode);
}
c = SkipSpaces(c);
}
if (DeclarationNameBefore(c, decl))
{
c = SkipSpaces(c);
if (_stream.ContinuesWith(SYSTEM))
{
decl.IsExtern = true;
_stream.Advance(5);
return(EntityDeclarationBeforeSystem(_stream.Next, decl));
}
else if (_stream.ContinuesWith(PUBLIC))
{
decl.IsExtern = true;
_stream.Advance(5);
return(EntityDeclarationBeforePublic(_stream.Next, decl));
}
else if (Specification.DQ == c || Specification.SQ == c)
{
_stringBuffer.Clear();
return(EntityDeclarationValue(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
DtdToken EntityDeclarationBeforeValue(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
if (Specification.DQ == c || Specification.SQ == c)
{
return(EntityDeclarationValue(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
DtdToken EntityDeclarationValue(Char c, Char end, DtdEntityToken decl)
{
decl.Value = ScanString(c, end);
return(EntityDeclarationAfter(_stream.Next, decl));
}
DtdToken EntityDeclarationBeforePublic(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
_stringBuffer.Clear();
if (Specification.DQ == c || Specification.SQ == c)
{
return(EntityDeclarationPublic(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
DtdToken EntityDeclarationPublic(Char c, Char quote, DtdEntityToken decl)
{
while (c != quote)
{
if (!c.IsPubidChar())
{
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.PublicIdentifier = _stringBuffer.ToString();
return(EntityDeclarationBeforeSystem(_stream.Next, decl));
}
DtdToken EntityDeclarationBeforeSystem(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
_stringBuffer.Clear();
if (Specification.DQ == c || Specification.SQ == c)
{
return(EntityDeclarationSystem(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
DtdToken EntityDeclarationSystem(Char c, Char quote, DtdEntityToken decl)
{
while (c != quote)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.SystemIdentifier = _stringBuffer.ToString();
return(EntityDeclarationAfter(_stream.Next, decl));
}
DtdToken EntityDeclarationAfter(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
if (decl.IsExtern && !decl.IsParameter && String.IsNullOrEmpty(decl.ExternNotation) && _stream.ContinuesWith(NDATA))
{
_stream.Advance(4);
c = _stream.Next;
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
do
{
_stringBuffer.Append(c);
c = _stream.Next;
}while (c.IsXmlName());
decl.ExternNotation = _stringBuffer.ToString();
return(EntityDeclarationAfter(c, decl));
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
}
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
else if (c == Specification.GT)
{
return(decl);
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
#endregion
#region Attribute Declaration
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#attdecls.
/// </summary>
/// <param name="c">The next input character.</param>
DtdAttributeToken AttributeDeclaration(Char c)
{
var decl = new DtdAttributeToken();
if (DeclarationNameBefore(_stream.Next, decl))
{
c = SkipSpaces(c);
while (true)
{
if (c == Specification.GT)
{
return(AttributeDeclarationAfter(c, decl));
}
else if (!c.IsXmlNameStart())
{
break;
}
_stringBuffer.Clear();
decl.Attributes.Add(AttributeDeclarationName(c));
c = _stream.Current;
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
}
}
}
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
AttributeDeclarationEntry AttributeDeclarationName(Char c)
{
var value = new AttributeDeclarationEntry();
do
{
_stringBuffer.Append(c);
c = _stream.Next;
}while (c.IsXmlName());
if (!c.IsSpaceCharacter())
{
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
value.Name = _stringBuffer.ToString();
_stringBuffer.Clear();
return(AttributeDeclarationType(_stream.Next, value));
}
AttributeDeclarationEntry AttributeDeclarationType(Char c, AttributeDeclarationEntry value)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.RBO)
{
var type = new AttributeEnumeratedType();
value.Type = type;
AttributeDeclarationTypeEnumeration(_stream.Next, type);
}
else if (c.IsUppercaseAscii())
{
var id = String.Empty;
while (true)
{
if (c.IsSpaceCharacter())
{
id = _stringBuffer.ToString();
_stringBuffer.Clear();
break;
}
else if (c == Specification.GT)
{
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
else if (c == Specification.NULL)
{
RaiseErrorOccurred(ErrorCode.NULL);
_stringBuffer.Append(Specification.REPLACEMENT);
}
else if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
else
{
_stringBuffer.Append(c);
}
c = _stream.Next;
}
switch (id)
{
case CDATA:
value.Type = new AttributeStringType();
break;
case ID:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.ID
};
break;
case IDREF:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.IDREF
};
break;
case IDREFS:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.IDREFS
};
break;
case ENTITY:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.ENTITY
};
break;
case ENTITIES:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.ENTITIES
};
break;
case NMTOKEN:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.NMTOKEN
};
break;
case NMTOKENS:
value.Type = new AttributeTokenizedType {
Value = AttributeTokenizedType.TokenizedType.NMTOKENS
};
break;
case NOTATION:
var type = new AttributeEnumeratedType {
IsNotation = true
};
value.Type = type;
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c != Specification.RBO)
{
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
AttributeDeclarationTypeEnumeration(_stream.Next, type);
break;
default:
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
}
return(AttributeDeclarationValue(_stream.Next, value));
}
void AttributeDeclarationTypeEnumeration(Char c, AttributeEnumeratedType parent)
{
while (true)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
if (!c.IsXmlName())
{
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
do
{
_stringBuffer.Append(c);
c = _stream.Next;
}while (c.IsXmlName());
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
parent.Names.Add(_stringBuffer.ToString());
_stringBuffer.Clear();
if (c == Specification.RBC)
{
break;
}
else if (c == Specification.PIPE)
{
c = _stream.Next;
}
else
{
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
}
}
AttributeDeclarationEntry AttributeDeclarationValue(Char c, AttributeDeclarationEntry value)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
var isfixed = false;
if (c == Specification.NUM)
{
do
{
_stringBuffer.Append(c);
c = _stream.Next;
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
else if (c == Specification.GT)
{
break;
}
}while (!c.IsSpaceCharacter());
var tag = _stringBuffer.ToString();
_stringBuffer.Clear();
switch (tag)
{
case REQUIRED:
value.Default = new AttributeRequiredValue();
return(value);
case IMPLIED:
value.Default = new AttributeImpliedValue();
return(value);
case FIXED:
isfixed = true;
break;
}
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
}
var defvalue = AttributeDeclarationBeforeDefaultValue(c);
_stream.Advance();
value.Default = new AttributeCustomValue
{
Value = defvalue,
IsFixed = isfixed
};
return(value);
}
String AttributeDeclarationBeforeDefaultValue(Char c)
{
if (c == Specification.DQ || c == Specification.SQ)
{
return(ScanString(_stream.Next, c));
}
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
DtdAttributeToken AttributeDeclarationAfter(Char c, DtdAttributeToken decl)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.GT)
{
return(decl);
}
throw Errors.Xml(ErrorCode.DtdAttListInvalid);
}
#endregion
#region Notation Declaration
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#Notations.
/// </summary>
/// <param name="c">The next input character.</param>
DtdNotationToken NotationDeclaration(Char c)
{
if (c.IsSpaceCharacter())
{
var decl = new DtdNotationToken();
if (DeclarationNameBefore(_stream.Next, decl))
{
c = SkipSpaces(c);
if (_stream.ContinuesWith(PUBLIC))
{
_stream.Advance(5);
return(NotationDeclarationBeforePublic(_stream.Next, decl));
}
else if (_stream.ContinuesWith(SYSTEM))
{
_stream.Advance(5);
return(NotationDeclarationBeforeSystem(_stream.Next, decl));
}
return(NotationDeclarationAfterSystem(c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
DtdNotationToken NotationDeclarationBeforePublic(Char c, DtdNotationToken decl)
{
if (c.IsSpaceCharacter())
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.SQ || c == Specification.DQ)
{
return(NotationDeclarationPublic(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
DtdNotationToken NotationDeclarationPublic(Char c, Char quote, DtdNotationToken decl)
{
_stringBuffer.Clear();
while (c != quote)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
else if (!c.IsPubidChar())
{
throw Errors.Xml(ErrorCode.XmlInvalidPubId);
}
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.PublicIdentifier = _stringBuffer.ToString();
return(NotationDeclarationAfterPublic(_stream.Next, decl));
}
DtdNotationToken NotationDeclarationAfterPublic(Char c, DtdNotationToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
if (c == Specification.SQ || c == Specification.DQ)
{
return(NotationDeclarationSystem(_stream.Next, c, decl));
}
}
if (c == Specification.GT)
{
return(decl);
}
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
DtdNotationToken NotationDeclarationBeforeSystem(Char c, DtdNotationToken decl)
{
if (c.IsSpaceCharacter())
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.SQ || c == Specification.DQ)
{
return(NotationDeclarationSystem(_stream.Next, c, decl));
}
}
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
DtdNotationToken NotationDeclarationSystem(Char c, Char quote, DtdNotationToken decl)
{
_stringBuffer.Clear();
while (c != quote)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.SystemIdentifier = _stringBuffer.ToString();
return(NotationDeclarationAfterSystem(_stream.Next, decl));
}
DtdNotationToken NotationDeclarationAfterSystem(Char c, DtdNotationToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
}
if (c == Specification.GT)
{
return(decl);
}
throw Errors.Xml(ErrorCode.DtdNotationInvalid);
}
#endregion
#region Type Declaration
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#elemdecls.
/// </summary>
/// <param name="c">The next input character.</param>
DtdElementToken TypeDeclaration(Char c)
{
var decl = new DtdElementToken();
if (DeclarationNameBefore(c, decl))
{
c = SkipSpaces(c);
if (c == Specification.RBO)
{
return(TypeDeclarationBeforeContent(_stream.Next, decl));
}
else if (_stream.ContinuesWith(ANY))
{
_stream.Advance(2);
decl.Entry = ElementDeclarationEntry.Any;
return(TypeDeclarationAfterContent(_stream.Next, decl));
}
else if (_stream.ContinuesWith(EMPTY))
{
_stream.Advance(4);
decl.Entry = ElementDeclarationEntry.Empty;
return(TypeDeclarationAfterContent(_stream.Next, decl));
}
return(TypeDeclarationAfterContent(c, decl));
}
throw Errors.Xml(ErrorCode.DtdTypeInvalid);
}
DtdElementToken TypeDeclarationBeforeContent(Char c, DtdElementToken decl)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (_stream.ContinuesWith(PCDATA))
{
_stream.Advance(6);
decl.Entry = TypeDeclarationMixed(_stream.Next);
}
else
{
decl.Entry = TypeDeclarationChildren(c);
}
return(TypeDeclarationAfterContent(_stream.Current, decl));
}
ElementChildrenDeclarationEntry TypeDeclarationChildren(Char c)
{
var entries = new List <ElementQuantifiedDeclarationEntry>();
var connection = Specification.NULL;
while (true)
{
if (entries.Count > 0)
{
if (c != Specification.PIPE && c != Specification.COMMA)
{
throw Errors.Xml(ErrorCode.DtdTypeContent);
}
if (entries.Count == 1)
{
connection = c;
}
else if (connection != c)
{
throw Errors.Xml(ErrorCode.DtdTypeContent);
}
c = _stream.Next;
}
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c.IsXmlNameStart())
{
var name = TypeDeclarationName(c);
entries.Add(name);
}
else if (c == Specification.RBO)
{
entries.Add(TypeDeclarationChildren(_stream.Next));
}
else
{
throw Errors.Xml(ErrorCode.DtdTypeContent);
}
c = _stream.Current;
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.RBC)
{
break;
}
}
c = _stream.Next;
if (entries.Count == 0)
{
throw Errors.Xml(ErrorCode.DtdTypeInvalid);
}
if (connection == Specification.COMMA)
{
var sequence = new ElementSequenceDeclarationEntry();
sequence.Sequence.AddRange(entries);
sequence.Quantifier = TypeDeclarationQuantifier(c);
return(sequence);
}
else
{
var choice = new ElementChoiceDeclarationEntry();
choice.Choice.AddRange(entries);
choice.Quantifier = TypeDeclarationQuantifier(c);
return(choice);
}
}
ElementNameDeclarationEntry TypeDeclarationName(Char c)
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
while ((c = _stream.Next).IsXmlName())
{
_stringBuffer.Append(c);
}
return(new ElementNameDeclarationEntry
{
Name = _stringBuffer.ToString(),
Quantifier = TypeDeclarationQuantifier(c)
});
}
ElementQuantifier TypeDeclarationQuantifier(Char c)
{
switch (c)
{
case Specification.ASTERISK:
_stream.Advance();
return(ElementQuantifier.ZeroOrMore);
case Specification.QM:
_stream.Advance();
return(ElementQuantifier.ZeroOrOne);
case Specification.PLUS:
_stream.Advance();
return(ElementQuantifier.OneOrMore);
default:
return(ElementQuantifier.One);
}
}
ElementMixedDeclarationEntry TypeDeclarationMixed(Char c)
{
var entry = new ElementMixedDeclarationEntry();
while (true)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.RBC)
{
c = _stream.Next;
if (c == Specification.ASTERISK)
{
entry.Quantifier = ElementQuantifier.ZeroOrMore;
_stream.Advance();
return(entry);
}
if (entry.Names.Count == 0)
{
break;
}
}
else if (c == Specification.PIPE)
{
c = _stream.Next;
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
_stringBuffer.Clear();
if (c.IsXmlNameStart())
{
_stringBuffer.Append(c);
while ((c = _stream.Next).IsXmlName())
{
_stringBuffer.Append(c);
}
entry.Names.Add(_stringBuffer.ToString());
continue;
}
}
throw Errors.Xml(ErrorCode.DtdTypeContent);
}
return(entry);
}
DtdElementToken TypeDeclarationAfterContent(Char c, DtdElementToken decl)
{
while (c.IsSpaceCharacter())
{
c = _stream.Next;
}
if (c == Specification.GT)
{
return(decl);
}
throw Errors.Xml(ErrorCode.DtdTypeInvalid);
}
#endregion
}
/// <summary>
/// Adds the given entity to the DTD container.
/// </summary>
/// <param name="token">The entity token to add.</param>
void AddEntity(DtdEntityToken token)
{
if (token.IsExtern)
token.Value = GetText(token.SystemIdentifier);
if (token.IsParameter)
_result.AddParameter(token.ToElement());
else
_result.AddEntity(token.ToElement());
}
DtdToken EntityDeclarationAfter(Char c, DtdEntityToken decl)
{
while (c.IsSpaceCharacter())
c = _src.Next;
if (c == Specification.EOF)
throw new ArgumentException("The document ended unexpectedly.");
else if (c == Specification.GT)
return decl;
else if (decl.IsExtern && String.IsNullOrEmpty(decl.ExternNotation))
{
if (_src.ContinuesWith("NDATA"))
{
_src.Advance(4);
c = _src.Next;
while (c.IsSpaceCharacter())
c = _src.Next;
if (c.IsNameStart())
{
_stringBuffer.Clear();
do
{
_stringBuffer.Append(c);
c = _src.Next;
}
while (c.IsName());
decl.ExternNotation = _stringBuffer.ToString();
return EntityDeclarationAfter(c, decl);
}
}
}
throw new ArgumentException("Declaration invalid.");
}
DtdToken EntityDeclarationAfter(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
if (decl.IsExtern && !decl.IsParameter && String.IsNullOrEmpty(decl.ExternNotation) && _stream.ContinuesWith(NDATA))
{
_stream.Advance(4);
c = _stream.Next;
while (c.IsSpaceCharacter())
c = _stream.Next;
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
do
{
_stringBuffer.Append(c);
c = _stream.Next;
}
while (c.IsXmlName());
decl.ExternNotation = _stringBuffer.ToString();
return EntityDeclarationAfter(c, decl);
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
}
if (c == Specification.EOF)
throw Errors.Xml(ErrorCode.EOF);
else if (c == Specification.GT)
return decl;
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-entity-decl.
/// </summary>
/// <param name="c">The next input character.</param>
DtdToken EntityDeclaration(Char c)
{
var decl = new DtdEntityToken();
var canContinue = false;
if (c.IsSpaceCharacter())
canContinue = DeclarationNameBefore(_src.Next, decl);
else if (c == Specification.EOF)
throw new ArgumentException("The document ended unexpectedly.");
else
{
RaiseErrorOccurred(ErrorCode.UndefinedMarkupDeclaration);
canContinue = DeclarationNameBefore(c, decl);
}
if (canContinue && decl.Name == "%")
{
decl.IsParameter = true;
canContinue = DeclarationNameBefore(_src.Next, decl);
}
c = _src.Current;
if (canContinue)
{
if (_src.ContinuesWith("SYSTEM"))
{
_src.Advance(5);
decl.IsExtern = true;
do
{
c = _src.Next;
}
while (c.IsSpaceCharacter());
}
_stringBuffer.Clear();
decl.Value = EntityDeclarationBeforeValue(c);
c = _src.Next;
}
return EntityDeclarationAfter(c, decl);
}
DtdToken EntityDeclarationSystem(Char c, Char quote, DtdEntityToken decl)
{
while (c != quote)
{
if (c == Specification.EOF)
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.SystemIdentifier = _stringBuffer.ToString();
return EntityDeclarationAfter(_stream.Next, decl);
}
DtdToken EntityDeclarationBeforeSystem(Char c, DtdEntityToken decl)
{
if (c.IsSpaceCharacter())
{
c = SkipSpaces(c);
_stringBuffer.Clear();
if (Specification.DQ == c || Specification.SQ == c)
return EntityDeclarationSystem(_stream.Next, c, decl);
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}
DtdToken EntityDeclarationPublic(Char c, Char quote, DtdEntityToken decl)
{
while (c != quote)
{
if (!c.IsPubidChar())
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
_stringBuffer.Append(c);
c = _stream.Next;
}
decl.PublicIdentifier = _stringBuffer.ToString();
return EntityDeclarationBeforeSystem(_stream.Next, decl);
}
DtdToken EntityDeclarationValue(Char c, Char end, DtdEntityToken decl)
{
decl.Value = ScanString(c, end);
return EntityDeclarationAfter(_stream.Next, decl);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-entity-decl.
/// </summary>
/// <param name="c">The next input character.</param>
DtdToken EntityDeclaration(Char c)
{
var decl = new DtdEntityToken();
if (c.IsSpaceCharacter())
c = SkipSpaces(c);
if (c == Specification.PERCENT)
{
decl.IsParameter = true;
if (!_stream.Next.IsSpaceCharacter())
throw Errors.Xml(ErrorCode.CharacterReferenceInvalidCode);
c = SkipSpaces(c);
}
if (DeclarationNameBefore(c, decl))
{
c = SkipSpaces(c);
if (_stream.ContinuesWith(SYSTEM))
{
decl.IsExtern = true;
_stream.Advance(5);
return EntityDeclarationBeforeSystem(_stream.Next, decl);
}
else if (_stream.ContinuesWith(PUBLIC))
{
decl.IsExtern = true;
_stream.Advance(5);
return EntityDeclarationBeforePublic(_stream.Next, decl);
}
else if (Specification.DQ == c || Specification.SQ == c)
{
_stringBuffer.Clear();
return EntityDeclarationValue(_stream.Next, c, decl);
}
}
throw Errors.Xml(ErrorCode.DtdEntityInvalid);
}