private bool GenEntity(XmlQualifiedName qname)
{
string n = qname.Name;
if (n[0] == '#') // char entity reference
{
return(false);
}
else if (SchemaEntity.IsPredefinedEntity(n))
{
return(false);
}
else
{
SchemaEntity en = GetEntity(qname, false);
if (en == null)
{
// well-formness error, see xml spec [68]
throw new XmlException(Res.Xml_UndeclaredEntity, n);
}
if (!en.NData.IsEmpty)
{
// well-formness error, see xml spec [68]
throw new XmlException(Res.Xml_UnparsedEntityRef, n);
}
if (reader.StandAlone && en.DeclaredInExternal)
{
SendValidationEvent(Res.Sch_StandAlone);
}
return(true);
}
}
protected static void ProcessEntity(SchemaInfo sinfo, string name, object sender, ValidationEventHandler eventhandler, string baseUri, int lineNumber, int linePosition)
{
SchemaEntity en = (SchemaEntity)sinfo.GeneralEntities[new XmlQualifiedName(name)];
XmlSchemaException e = null;
if (en == null)
{
// validation error, see xml spec [68]
e = new XmlSchemaException(Res.Sch_UndeclaredEntity, name, baseUri, lineNumber, linePosition);
}
else if (en.NData.IsEmpty)
{
e = new XmlSchemaException(Res.Sch_UnparsedEntityRef, name, baseUri, lineNumber, linePosition);
}
if (e != null)
{
if (eventhandler != null)
{
eventhandler(sender, new ValidationEventArgs(e));
}
else
{
throw e;
}
}
}
private bool GenEntity(XmlQualifiedName qname)
{
string name = qname.Name;
if (name[0] == '#')
{
return(false);
}
if (SchemaEntity.IsPredefinedEntity(name))
{
return(false);
}
SchemaEntity entity = this.GetEntity(qname, false);
if (entity == null)
{
throw new XmlException("Xml_UndeclaredEntity", name);
}
if (!entity.NData.IsEmpty)
{
throw new XmlException("Xml_UnparsedEntityRef", name);
}
if (base.reader.StandAlone && entity.DeclaredInExternal)
{
base.SendValidationEvent("Sch_StandAlone");
}
return(true);
}
// returns true == continue parsing
// return false == unexpanded external entity, stop parsing and return
private EntityType HandleGeneralEntityReference( string name, bool isInAttributeValue, bool pushFakeEntityIfNullResolver, int entityStartLinePos ) {
IDtdEntityInfo entity = null;
if ( dtdInfo == null && fragmentParserContext != null && fragmentParserContext.HasDtdInfo && dtdProcessing == DtdProcessing.Parse ) {
ParseDtdFromParserContext();
}
if ( dtdInfo == null ||
( ( entity = dtdInfo.LookupEntity( name) ) == null ) ) {
#if !SILVERLIGHT // Needed only for XmlTextReader (when used from XmlDocument)
if ( disableUndeclaredEntityCheck ) {
SchemaEntity schemaEntity = new SchemaEntity( new XmlQualifiedName( name ), false );
schemaEntity.Text = string.Empty;
entity = schemaEntity;
}
else
#endif
Throw( Res.Xml_UndeclaredEntity, name, ps.LineNo, entityStartLinePos );
}
if ( entity.IsUnparsedEntity ) {
#if !SILVERLIGHT // Needed only for XmlTextReader (when used from XmlDocument)
if ( disableUndeclaredEntityCheck ) {
SchemaEntity schemaEntity = new SchemaEntity( new XmlQualifiedName( name ), false );
schemaEntity.Text = string.Empty;
entity = schemaEntity;
}
else
#endif
Throw( Res.Xml_UnparsedEntityRef, name, ps.LineNo, entityStartLinePos );
}
if ( standalone && entity.IsDeclaredInExternal ) {
Throw( Res.Xml_ExternalEntityInStandAloneDocument, entity.Name, ps.LineNo, entityStartLinePos );
}
if ( entity.IsExternal ) {
if ( isInAttributeValue ) {
Throw( Res.Xml_ExternalEntityInAttValue, name, ps.LineNo, entityStartLinePos );
return EntityType.Skipped;
}
if ( parsingMode == ParsingMode.SkipContent ) {
return EntityType.Skipped;
}
if (IsResolverNull) {
if ( pushFakeEntityIfNullResolver ) {
PushExternalEntity( entity );
curNode.entityId = ps.entityId;
return EntityType.FakeExpanded;
}
return EntityType.Skipped;
}
else {
PushExternalEntity( entity );
curNode.entityId = ps.entityId;
#if SILVERLIGHT // Needed only for XmlTextReader (reporting of entities)
return EntityType.Expanded;
#else
return (isInAttributeValue && validatingReaderCompatFlag) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
#endif
}
}
else {
if ( parsingMode == ParsingMode.SkipContent ) {
return EntityType.Skipped;
}
PushInternalEntity( entity );
curNode.entityId = ps.entityId;
#if SILVERLIGHT // Needed only for XmlTextReader (reporting of entities)
return EntityType.Expanded;
#else
return ( isInAttributeValue && validatingReaderCompatFlag ) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
#endif
}
}
private void ParseEntityDecl() {
bool isParamEntity = false;
SchemaEntity entity = null;
// get entity name and type
switch ( GetToken( true ) ) {
case Token.Percent:
isParamEntity = true;
if ( GetToken( true ) != Token.Name ) {
goto UnexpectedError;
}
goto case Token.Name;
case Token.Name:
// create entity object
XmlQualifiedName entityName = GetNameQualified( false );
entity = new SchemaEntity( entityName, isParamEntity );
entity.BaseURI = BaseUriStr;
entity.DeclaredURI = ( externalDtdBaseUri.Length == 0 ) ? documentBaseUri : externalDtdBaseUri;
if ( isParamEntity ) {
if ( schemaInfo.ParameterEntities[ entityName ] == null ) {
schemaInfo.ParameterEntities.Add( entityName, entity );
}
}
else {
if ( schemaInfo.GeneralEntities[ entityName ] == null ) {
schemaInfo.GeneralEntities.Add( entityName, entity );
}
}
entity.DeclaredInExternal = !ParsingInternalSubset;
entity.IsProcessed = true;
break;
default:
goto UnexpectedError;
}
Token token = GetToken( true );
switch ( token ) {
case Token.PUBLIC:
case Token.SYSTEM:
string systemId;
string publicId;
ParseExternalId( token, Token.EntityDecl, out publicId, out systemId );
entity.IsExternal = true;
entity.Url = systemId;
entity.Pubid = publicId;
if ( GetToken( false ) == Token.NData ) {
if ( isParamEntity ) {
ThrowUnexpectedToken( curPos - 5, ">" ); // 5 == strlen("NDATA")
}
if ( !whitespaceSeen ) {
Throw( curPos - 5, Res.Xml_ExpectingWhiteSpace, "NDATA" );
}
if ( GetToken( true ) != Token.Name ) {
goto UnexpectedError;
}
entity.NData = GetNameQualified( false );
string notationName = entity.NData.Name;
if ( schemaInfo.Notations[ notationName ] == null ) {
if ( undeclaredNotations == null ) {
undeclaredNotations = new Hashtable();
}
UndeclaredNotation un = new UndeclaredNotation( notationName, LineNo, LinePos - notationName.Length );
UndeclaredNotation loggedUn = (UndeclaredNotation)undeclaredNotations[notationName];
if ( loggedUn != null ) {
un.next = loggedUn.next;
loggedUn.next = un;
}
else {
undeclaredNotations.Add( notationName, un );
}
}
}
break;
case Token.Literal:
entity.Text = GetValue();
entity.Line = (int)literalLineInfo.lineNo;
entity.Pos = (int)literalLineInfo.linePos;
break;
default:
goto UnexpectedError;
}
if ( GetToken( false ) == Token.GreaterThan ) {
entity.IsProcessed = false;
return;
}
UnexpectedError:
OnUnexpectedError();
}
private void PushInternalEntity( SchemaEntity entity, int entityId ) {
Debug.Assert( !entity.IsExternal );
Encoding enc = ps.encoding;
PushParsingState();
InitStringInput( ( entity.DeclaredURI != null ) ? entity.DeclaredURI : string.Empty, enc, entity.Text );
ps.entity = entity;
ps.entityId = entityId;
ps.lineNo = entity.Line;
ps.lineStartPos = - entity.Pos - 1;
ps.eolNormalized = true;
entity.IsProcessed = true;
}
// returns true if real entity has been pushed, false if fake entity (=empty content entity)
private bool PushExternalEntity( SchemaEntity entity, int entityId ) {
Debug.Assert( entity.IsExternal );
if ( xmlResolver != null ) {
Uri entityBaseUri = ( entity.BaseURI.Length > 0 ) ? xmlResolver.ResolveUri( null, entity.BaseURI ): null;
Uri entityUri = xmlResolver.ResolveUri( entityBaseUri, entity.Url );
Stream stream = null;
try {
stream = OpenStream( entityUri );
}
catch ( Exception e ) {
if ( v1Compat ) {
throw;
}
Throw( new XmlException( Res.Xml_ErrorOpeningExternalEntity, new string[] { entityUri.ToString(), e.Message }, e, 0, 0 ) );
}
if ( stream == null ) {
Throw( Res.Xml_CannotResolveEntity, entity.Name.Name );
}
PushParsingState();
if ( v1Compat ) {
InitStreamInput( entityUri, stream, null );
}
else {
InitStreamInput( entityUri, stream, null );
}
ps.entity = entity;
ps.entityId = entityId;
entity.IsProcessed = true;
Debug.Assert( ps.appendMode );
int initialPos = ps.charPos;
if ( v1Compat ) {
EatWhitespaces( null );
}
if ( !ParseXmlDeclaration( true ) ) {
ps.charPos = initialPos;
}
return true;
}
else {
Encoding enc = ps.encoding;
PushParsingState();
InitStringInput( entity.Url, enc, string.Empty );
ps.entity = entity;
ps.entityId = entityId;
return false;
}
}
// return true if EndEntity node should be reported. The entity is stored in lastEntity.
private bool HandleEntityEnd( bool checkEntityNesting ) {
if ( parsingStatesStackTop == -1 ) {
Debug.Assert( false );
Throw( Res.Xml_InternalError );
}
if ( ps.entityResolvedManually ) {
index--;
if ( checkEntityNesting ) {
if ( ps.entityId != nodes[index].entityId ) {
Throw( Res.Xml_IncompleteEntity );
}
}
lastEntity = ps.entity; // save last entity for the EndEntity node
PopEntity();
curNode.entityId = ps.entityId;
return true;
}
else {
if ( checkEntityNesting ) {
if ( ps.entityId != nodes[index].entityId ) {
Throw( Res.Xml_IncompleteEntity );
}
}
PopEntity();
curNode.entityId = ps.entityId;
reportedEncoding = ps.encoding;
reportedBaseUri = ps.baseUriStr;
return false;
}
}
private void PushScanner(XmlScanner scanner, SchemaEntity en, Uri baseUrl) {
DtdScannerState s;
if (en != null && _L >= 0 && _HasTerminal) {
SendValidationEvent(Res.Sch_ParEntityRefNesting, null);
}
s = (DtdScannerState)_ScannerStack.Push();
if (s == null) {
s = new DtdScannerState();
_ScannerStack[_ScannerStack.Length-1] = s;
}
s._Scanner = _Scanner;
s._En = en;
s._IsInternal = _IsInternal;
s._L = _L;
s._IncludeDepth = _IncludeDepth;
s._IgnoreDepth = _IgnoreDepth;
s._BaseUri = _BaseUri;
_Scanner = scanner;
_Scanner.InDTD = true;
_BaseUri = baseUrl;
if (en != null) {
_HasSeenWhiteSpace = en.IsParEntity;
en.IsProcessed = true;
if (_IsInternal)
_IsInternal = !en.IsExternal;
_HasSeenContent = !en.IsExternal;
}
}
internal bool DtdParserProxy_PopEntity( out SchemaEntity oldEntity, out int newEntityId ) {
if ( parsingStatesStackTop == -1 ) {
oldEntity = null;
newEntityId = -1;
return false;
}
oldEntity = ps.entity;
PopEntity();
newEntityId = ps.entityId;
return true;
}
internal bool DtdParserProxy_PushEntity( SchemaEntity entity, int entityId ) {
if ( entity.IsExternal ) {
if ( xmlResolver == null ) {
return false;
}
return PushExternalEntity( entity, entityId );
}
else {
PushInternalEntity( entity, entityId );
return true;
}
}
bool IDtdParserAdapter.PopEntity( out SchemaEntity oldEntity, out int newEntityId ) {
return reader.DtdParserProxy_PopEntity( out oldEntity, out newEntityId );
}
bool IDtdParserAdapter.PushEntity( SchemaEntity entity, int entityId ) {
return reader.DtdParserProxy_PushEntity( entity, entityId );
}
private void PushAttValueScanner(XmlScanner scanner, SchemaEntity en) {
if (_AttValueScannerStack == null) {
_AttValueScannerStack = new HWStack(STACK_INCREMENT);
}
DtdScannerState s = (DtdScannerState)_AttValueScannerStack.Push();
if (s == null) {
s = new DtdScannerState();
_AttValueScannerStack[_AttValueScannerStack.Length-1] = s;
}
s._Scanner = _Scanner;
s._En = en;
en.IsProcessed = true;
}
// returns true == continue parsing
// return false == unexpanded external entity, stop parsing and return
private EntityType HandleGeneralEntityReference(string name, bool isInAttributeValue, bool pushFakeEntityIfNullResolver, int entityStartLinePos)
{
IDtdEntityInfo entity = null;
if (_dtdInfo == null && _fragmentParserContext != null && _fragmentParserContext.HasDtdInfo && _dtdProcessing == DtdProcessing.Parse)
{
ParseDtdFromParserContext();
}
if (_dtdInfo == null ||
((entity = _dtdInfo.LookupEntity(name)) == null))
{
if (_disableUndeclaredEntityCheck)
{
SchemaEntity schemaEntity = new SchemaEntity(new XmlQualifiedName(name), false);
schemaEntity.Text = string.Empty;
entity = schemaEntity;
}
else
Throw(SR.Xml_UndeclaredEntity, name, _ps.LineNo, entityStartLinePos);
}
if (entity.IsUnparsedEntity)
{
if (_disableUndeclaredEntityCheck)
{
SchemaEntity schemaEntity = new SchemaEntity(new XmlQualifiedName(name), false);
schemaEntity.Text = string.Empty;
entity = schemaEntity;
}
else
Throw(SR.Xml_UnparsedEntityRef, name, _ps.LineNo, entityStartLinePos);
}
if (_standalone && entity.IsDeclaredInExternal)
{
Throw(SR.Xml_ExternalEntityInStandAloneDocument, entity.Name, _ps.LineNo, entityStartLinePos);
}
if (entity.IsExternal)
{
if (isInAttributeValue)
{
Throw(SR.Xml_ExternalEntityInAttValue, name, _ps.LineNo, entityStartLinePos);
return EntityType.Skipped;
}
if (_parsingMode == ParsingMode.SkipContent)
{
return EntityType.Skipped;
}
if (IsResolverNull)
{
if (pushFakeEntityIfNullResolver)
{
PushExternalEntity(entity);
_curNode.entityId = _ps.entityId;
return EntityType.FakeExpanded;
}
return EntityType.Skipped;
}
else
{
PushExternalEntity(entity);
_curNode.entityId = _ps.entityId;
return (isInAttributeValue && _validatingReaderCompatFlag) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
}
}
else
{
if (_parsingMode == ParsingMode.SkipContent)
{
return EntityType.Skipped;
}
PushInternalEntity(entity);
_curNode.entityId = _ps.entityId;
return (isInAttributeValue && _validatingReaderCompatFlag) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
}
}
// returns true == continue parsing
// return false == unexpanded external entity, stop parsing and return
private EntityType HandleGeneralEntityReference( string name, bool isInAttributeValue, bool pushFakeEntityIfNullResolver, int entityStartLinePos ) {
SchemaEntity entity = null;
XmlQualifiedName qName = new XmlQualifiedName( name );
if ( dtdParserProxy == null && fragmentParserContext != null && fragmentParserContext.HasDtdInfo && !prohibitDtd ) {
ParseDtdFromParserContext();
}
if ( dtdParserProxy == null ||
( ( entity = (SchemaEntity) dtdParserProxy.DtdSchemaInfo.GeneralEntities[qName] ) == null ) ) {
if ( disableUndeclaredEntityCheck ) {
entity = new SchemaEntity( new XmlQualifiedName( name ), false );
entity.Text = string.Empty;
}
else {
Throw( Res.Xml_UndeclaredEntity, name, ps.LineNo, entityStartLinePos );
}
}
if ( entity.IsProcessed ) {
Throw( Res.Xml_RecursiveGenEntity, name, ps.LineNo, entityStartLinePos );
}
if ( !entity.NData.IsEmpty ) {
if ( disableUndeclaredEntityCheck ) {
entity = new SchemaEntity( new XmlQualifiedName( name ), false );
entity.Text = string.Empty;
}
else {
Throw( Res.Xml_UnparsedEntityRef, name, ps.LineNo, entityStartLinePos );
}
}
if ( standalone && entity.DeclaredInExternal ) {
Throw( Res.Xml_ExternalEntityInStandAloneDocument, entity.Name.Name, ps.LineNo, entityStartLinePos );
}
if ( entity.IsExternal ) {
if ( isInAttributeValue ) {
Throw( Res.Xml_ExternalEntityInAttValue, name, ps.LineNo, entityStartLinePos );
return EntityType.Skipped;
}
if ( parsingMode == ParsingMode.SkipContent ) {
return EntityType.Skipped;
}
if ( xmlResolver == null ) {
if ( pushFakeEntityIfNullResolver ) {
PushExternalEntity( entity, ++nextEntityId );
curNode.entityId = ps.entityId;
return EntityType.FakeExpanded;
}
return EntityType.Skipped;
}
else {
PushExternalEntity( entity, ++nextEntityId );
curNode.entityId = ps.entityId;
return ( isInAttributeValue && validatingReaderCompatFlag ) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
}
}
else {
if ( parsingMode == ParsingMode.SkipContent ) {
return EntityType.Skipped;
}
int entityId = nextEntityId++;
PushInternalEntity( entity, entityId );
curNode.entityId = entityId;
return ( isInAttributeValue && validatingReaderCompatFlag ) ? EntityType.ExpandedInAttribute : EntityType.Expanded;
}
}
private void ParseEntityDecl()
{
bool isParamEntity = false;
SchemaEntity entity = null;
// get entity name and type
switch (GetToken(true))
{
case Token.Percent:
isParamEntity = true;
if (GetToken(true) != Token.Name)
{
goto UnexpectedError;
}
goto case Token.Name;
case Token.Name:
// create entity object
XmlQualifiedName entityName = GetNameQualified(false);
entity = new SchemaEntity(entityName, isParamEntity);
entity.BaseURI = BaseUriStr;
entity.DeclaredURI = (_externalDtdBaseUri.Length == 0) ? _documentBaseUri : _externalDtdBaseUri;
if (isParamEntity)
{
if (!_schemaInfo.ParameterEntities.ContainsKey(entityName))
{
_schemaInfo.ParameterEntities.Add(entityName, entity);
}
}
else
{
if (!_schemaInfo.GeneralEntities.ContainsKey(entityName))
{
_schemaInfo.GeneralEntities.Add(entityName, entity);
}
}
entity.DeclaredInExternal = !ParsingInternalSubset;
entity.ParsingInProgress = true;
break;
default:
goto UnexpectedError;
}
Token token = GetToken(true);
switch (token)
{
case Token.PUBLIC:
case Token.SYSTEM:
string systemId;
string publicId;
ParseExternalId(token, Token.EntityDecl, out publicId, out systemId);
entity.IsExternal = true;
entity.Url = systemId;
entity.Pubid = publicId;
if (GetToken(false) == Token.NData)
{
if (isParamEntity)
{
ThrowUnexpectedToken(_curPos - 5, ">"); // 5 == strlen("NDATA")
}
if (!_whitespaceSeen)
{
Throw(_curPos - 5, SR.Xml_ExpectingWhiteSpace, "NDATA");
}
if (GetToken(true) != Token.Name)
{
goto UnexpectedError;
}
entity.NData = GetNameQualified(false);
#if !SILVERLIGHT
string notationName = entity.NData.Name;
if (!_schemaInfo.Notations.ContainsKey(notationName))
{
AddUndeclaredNotation(notationName);
}
#endif
}
break;
case Token.Literal:
entity.Text = GetValue();
entity.Line = (int)_literalLineInfo.lineNo;
entity.Pos = (int)_literalLineInfo.linePos;
break;
default:
goto UnexpectedError;
}
if (GetToken(false) == Token.GreaterThan)
{
entity.ParsingInProgress = false;
return;
}
UnexpectedError:
OnUnexpectedError();
}
private void ParseEntity() {
while (true) {
switch (_SubState) {
case 0:
SkipWhitespace(true);
_SubState = 1;
break;
case 1:
GetToken();
if (_Token == XmlToken.PERCENT) {
_IsParEntity = true;
_SubState = 2;
}
else {
_IsParEntity = false;
_SubState = 4;
}
break;
case 2:
SkipWhitespace(true);
_SubState = 3;
break;
case 3:
GetToken();
_SubState = 4;
break;
case 4:
_Entity = new SchemaEntity(GetName(_Token, false), _IsParEntity);
if (_BaseUri != null) {
_Entity.BaseURI = XmlUrlResolver.UnEscape(_BaseUri.ToString());
}
if (_IsLoadingExternalDTD) {
_Entity.DeclaredURI = _ExternalDTDBaseUri;
} else {
_Entity.DeclaredURI = _DocBaseUri;
}
if (_Entity.IsParEntity) {
if (_SchemaInfo.ParameterEntities[_Entity.Name] == null) {
_SchemaInfo.ParameterEntities.Add(_Entity.Name, _Entity);
}
}
else {
if (_SchemaInfo.GeneralEntities[_Entity.Name] == null) {
_SchemaInfo.GeneralEntities.Add(_Entity.Name, _Entity);
}
}
_Entity.DeclaredInExternal = !_IsInternal;
_Entity.IsProcessed = true;
_SubState = 5;
break;
case 5:
GetToken();
if (_Token == XmlToken.QUOTE) { // EntityValue
//grab line number position for entity value
_Entity.Line = _Scanner.LineNum;
_Entity.Pos = _Scanner.LinePos - 1;
_SubState = 6;
Push(DtdFunctionIndex.GetEntityValue);
GetEntityValue();
}
else {
_SubState = 7;
Push(DtdFunctionIndex.ParseExternalID);
ParseExternalID();
}
break;
case 6:
GetToken();
_SubState = 11;
break;
case 7:
if (_HasExternalID) {
_SubState = 8;
_HasSeenWhiteSpace = SkipWhitespace(false);
}
else {
throw new XmlException(Res.Xml_ExpectExternalIdOrEntityValue, _Scanner.StartLineNum, _Scanner.StartLinePos);
}
break;
case 8:
GetToken();
_Entity.IsExternal = true;
_Entity.Url = _SystemLiteral;
_Entity.Pubid = _PubidLiteral;
if (!_IsParEntity && _Token == XmlToken.NAME && _Scanner.IsToken(XmlToken.NDATA)) {
if (!_HasSeenWhiteSpace)
throw new XmlException(Res.Xml_UnexpectedToken, XmlToken.ToString(XmlToken.WHITESPACE), _Scanner.StartLineNum, _Scanner.StartLinePos);
_SubState = 9;
}
else {
_SubState = 11;
}
break;
case 9:
GetToken(XmlToken.NAME);
_Entity.NData = GetName(XmlToken.NAME, false);
if (_SchemaInfo.Notations[_Entity.NData.Name] == null) {
_SchemaInfo.AddForwardRef(_Entity.NData.Name, _Entity.NData.Namespace, _Entity.NData.Name,
_Scanner.LineNum, _Scanner.LinePos,
false, ForwardRef.Type.NOTATION);
}
_SubState = 10;
break;
case 10:
GetToken();
_SubState = 11;
break;
case 11:
CheckTagend(_Token);
_Entity.IsProcessed = false;
Pop();
return;
}
}
}
