|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.IO;
using System.Text;
using Microsoft.Xml.Schema;
using System.Collections;
using System.Diagnostics;
using System.Globalization;
// using System.Security.Policy;
using System.Collections.Generic;
// using System.Security.Permissions;
using System.Runtime.Versioning;
namespace Microsoft.Xml
{
using System;
internal sealed partial class XmlValidatingReaderImpl : XmlReader, IXmlLineInfo, IXmlNamespaceResolver
{
//
// Private helper types
//
// ParsingFunction = what should the reader do when the next Read() is called
private enum ParsingFunction
{
Read = 0,
Init,
ParseDtdFromContext,
ResolveEntityInternally,
InReadBinaryContent,
ReaderClosed,
Error,
None,
}
internal class ValidationEventHandling : IValidationEventHandling
{
// Fields
private XmlValidatingReaderImpl _reader;
private ValidationEventHandler _eventHandler;
// Constructor
internal ValidationEventHandling(XmlValidatingReaderImpl reader)
{
_reader = reader;
}
// IValidationEventHandling interface
#region IValidationEventHandling interface
object IValidationEventHandling.EventHandler
{
get { return _eventHandler; }
}
void IValidationEventHandling.SendEvent(Exception /*XmlSchemaException*/ exception, XmlSeverityType severity)
{
if (_eventHandler != null)
{
_eventHandler(_reader, new ValidationEventArgs((XmlSchemaException)exception, severity));
}
else if (_reader.ValidationType != ValidationType.None && severity == XmlSeverityType.Error)
{
throw exception;
}
}
#endregion
// XmlValidatingReaderImpl helper methods
internal void AddHandler(ValidationEventHandler handler)
{
_eventHandler += handler;
}
internal void RemoveHandler(ValidationEventHandler handler)
{
_eventHandler -= handler;
}
}
//
// Fields
//
// core text reader
private XmlReader _coreReader;
private XmlTextReaderImpl _coreReaderImpl;
private IXmlNamespaceResolver _coreReaderNSResolver;
// validation
private ValidationType _validationType;
private BaseValidator _validator;
#pragma warning disable 618
private XmlSchemaCollection _schemaCollection;
#pragma warning restore 618
private bool _processIdentityConstraints;
// parsing function (state)
private ParsingFunction _parsingFunction = ParsingFunction.Init;
// event handling
private ValidationEventHandling _eventHandling;
// misc
private XmlParserContext _parserContext;
// helper for Read[Element]ContentAs{Base64,BinHex} methods
private ReadContentAsBinaryHelper _readBinaryHelper;
// Outer XmlReader exposed to the user - either XmlValidatingReader or XmlValidatingReaderImpl (when created via XmlReader.Create).
// Virtual methods called from within XmlValidatingReaderImpl must be called on the outer reader so in case the user overrides
// some of the XmlValidatingReader methods we will call the overriden version.
private XmlReader _outerReader;
//
// Constructors
//
// Initializes a new instance of XmlValidatingReaderImpl class with the specified XmlReader.
// This constructor is used when creating XmlValidatingReaderImpl for V1 XmlValidatingReader
internal XmlValidatingReaderImpl(XmlReader reader)
{
XmlAsyncCheckReader asyncCheckReader = reader as XmlAsyncCheckReader;
if (asyncCheckReader != null)
{
reader = asyncCheckReader.CoreReader;
}
_outerReader = this;
_coreReader = reader;
_coreReaderNSResolver = reader as IXmlNamespaceResolver;
_coreReaderImpl = reader as XmlTextReaderImpl;
if (_coreReaderImpl == null)
{
XmlTextReader tr = reader as XmlTextReader;
if (tr != null)
{
_coreReaderImpl = tr.Impl;
}
}
if (_coreReaderImpl == null)
{
throw new ArgumentException(ResXml.Arg_ExpectingXmlTextReader, "reader");
}
_coreReaderImpl.EntityHandling = EntityHandling.ExpandEntities;
_coreReaderImpl.XmlValidatingReaderCompatibilityMode = true;
_processIdentityConstraints = true;
#pragma warning disable 618
_schemaCollection = new XmlSchemaCollection(_coreReader.NameTable);
_schemaCollection.XmlResolver = GetResolver();
_eventHandling = new ValidationEventHandling(this);
_coreReaderImpl.ValidationEventHandling = _eventHandling;
_coreReaderImpl.OnDefaultAttributeUse = new XmlTextReaderImpl.OnDefaultAttributeUseDelegate(ValidateDefaultAttributeOnUse);
_validationType = ValidationType.Auto;
SetupValidation(ValidationType.Auto);
#pragma warning restore 618
}
// Initializes a new instance of XmlValidatingReaderImpl class for parsing fragments with the specified string, fragment type and parser context
// This constructor is used when creating XmlValidatingReaderImpl for V1 XmlValidatingReader
// SxS: This method resolves an Uri but does not expose it to the caller. It's OK to disable the SxS warning.
internal XmlValidatingReaderImpl(string xmlFragment, XmlNodeType fragType, XmlParserContext context)
: this(new XmlTextReader(xmlFragment, fragType, context))
{
if (_coreReader.BaseURI.Length > 0)
{
_validator.BaseUri = GetResolver().ResolveUri(null, _coreReader.BaseURI);
}
if (context != null)
{
_parsingFunction = ParsingFunction.ParseDtdFromContext;
_parserContext = context;
}
}
// Initializes a new instance of XmlValidatingReaderImpl class for parsing fragments with the specified stream, fragment type and parser context
// This constructor is used when creating XmlValidatingReaderImpl for V1 XmlValidatingReader
// SxS: This method resolves an Uri but does not expose it to the caller. It's OK to disable the SxS warning.
internal XmlValidatingReaderImpl(Stream xmlFragment, XmlNodeType fragType, XmlParserContext context)
: this(new XmlTextReader(xmlFragment, fragType, context))
{
if (_coreReader.BaseURI.Length > 0)
{
_validator.BaseUri = GetResolver().ResolveUri(null, _coreReader.BaseURI);
}
if (context != null)
{
_parsingFunction = ParsingFunction.ParseDtdFromContext;
_parserContext = context;
}
}
// Initializes a new instance of XmlValidatingReaderImpl class with the specified arguments.
// This constructor is used when creating XmlValidatingReaderImpl reader via "XmlReader.Create(..)"
internal XmlValidatingReaderImpl(XmlReader reader, ValidationEventHandler settingsEventHandler, bool processIdentityConstraints)
{
XmlAsyncCheckReader asyncCheckReader = reader as XmlAsyncCheckReader;
if (asyncCheckReader != null)
{
reader = asyncCheckReader.CoreReader;
}
_outerReader = this;
_coreReader = reader;
_coreReaderImpl = reader as XmlTextReaderImpl;
if (_coreReaderImpl == null)
{
XmlTextReader tr = reader as XmlTextReader;
if (tr != null)
{
_coreReaderImpl = tr.Impl;
}
}
if (_coreReaderImpl == null)
{
throw new ArgumentException(ResXml.Arg_ExpectingXmlTextReader, "reader");
}
_coreReaderImpl.XmlValidatingReaderCompatibilityMode = true;
_coreReaderNSResolver = reader as IXmlNamespaceResolver;
_processIdentityConstraints = processIdentityConstraints;
#pragma warning disable 618
_schemaCollection = new XmlSchemaCollection(_coreReader.NameTable);
#pragma warning restore 618
_schemaCollection.XmlResolver = GetResolver();
_eventHandling = new ValidationEventHandling(this);
if (settingsEventHandler != null)
{
_eventHandling.AddHandler(settingsEventHandler);
}
_coreReaderImpl.ValidationEventHandling = _eventHandling;
_coreReaderImpl.OnDefaultAttributeUse = new XmlTextReaderImpl.OnDefaultAttributeUseDelegate(ValidateDefaultAttributeOnUse);
_validationType = ValidationType.DTD;
SetupValidation(ValidationType.DTD);
}
//
// XmlReader members
//
// Returns the current settings of the reader
public override XmlReaderSettings Settings
{
get
{
XmlReaderSettings settings;
if (_coreReaderImpl.V1Compat)
{
settings = null;
}
else
{
settings = _coreReader.Settings;
}
if (settings != null)
{
settings = settings.Clone();
}
else
{
settings = new XmlReaderSettings();
}
settings.ValidationType = ValidationType.DTD;
if (!_processIdentityConstraints)
{
settings.ValidationFlags &= ~XmlSchemaValidationFlags.ProcessIdentityConstraints;
}
settings.ReadOnly = true;
return settings;
}
}
// Returns the type of the current node.
public override XmlNodeType NodeType
{
get
{
return _coreReader.NodeType;
}
}
// Returns the name of the current node, including prefix.
public override string Name
{
get
{
return _coreReader.Name;
}
}
// Returns local name of the current node (without prefix)
public override string LocalName
{
get
{
return _coreReader.LocalName;
}
}
// Returns namespace name of the current node.
public override string NamespaceURI
{
get
{
return _coreReader.NamespaceURI;
}
}
// Returns prefix associated with the current node.
public override string Prefix
{
get
{
return _coreReader.Prefix;
}
}
// Returns true if the current node can have Value property != string.Empty.
public override bool HasValue
{
get
{
return _coreReader.HasValue;
}
}
// Returns the text value of the current node.
public override string Value
{
get
{
return _coreReader.Value;
}
}
// Returns the depth of the current node in the XML element stack
public override int Depth
{
get
{
return _coreReader.Depth;
}
}
// Returns the base URI of the current node.
public override string BaseURI
{
get
{
return _coreReader.BaseURI;
}
}
// Returns true if the current node is an empty element (for example, <MyElement/>).
public override bool IsEmptyElement
{
get
{
return _coreReader.IsEmptyElement;
}
}
// Returns true of the current node is a default attribute declared in DTD.
public override bool IsDefault
{
get
{
return _coreReader.IsDefault;
}
}
// Returns the quote character used in the current attribute declaration
public override char QuoteChar
{
get
{
return _coreReader.QuoteChar;
}
}
// Returns the current xml:space scope.
public override XmlSpace XmlSpace
{
get
{
return _coreReader.XmlSpace;
}
}
// Returns the current xml:lang scope.</para>
public override string XmlLang
{
get
{
return _coreReader.XmlLang;
}
}
// Returns the current read state of the reader
public override ReadState ReadState
{
get
{
return (_parsingFunction == ParsingFunction.Init) ? ReadState.Initial : _coreReader.ReadState;
}
}
// Returns true if the reader reached end of the input data
public override bool EOF
{
get
{
return _coreReader.EOF;
}
}
// Returns the XmlNameTable associated with this XmlReader
public override XmlNameTable NameTable
{
get
{
return _coreReader.NameTable;
}
}
// Returns encoding of the XML document
internal Encoding Encoding
{
get
{
return _coreReaderImpl.Encoding;
}
}
// Returns the number of attributes on the current node.
public override int AttributeCount
{
get
{
return _coreReader.AttributeCount;
}
}
// Returns value of an attribute with the specified Name
public override string GetAttribute(string name)
{
return _coreReader.GetAttribute(name);
}
// Returns value of an attribute with the specified LocalName and NamespaceURI
public override string GetAttribute(string localName, string namespaceURI)
{
return _coreReader.GetAttribute(localName, namespaceURI);
}
// Returns value of an attribute at the specified index (position)
public override string GetAttribute(int i)
{
return _coreReader.GetAttribute(i);
}
// Moves to an attribute with the specified Name
public override bool MoveToAttribute(string name)
{
if (!_coreReader.MoveToAttribute(name))
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
// Moves to an attribute with the specified LocalName and NamespceURI
public override bool MoveToAttribute(string localName, string namespaceURI)
{
if (!_coreReader.MoveToAttribute(localName, namespaceURI))
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
// Moves to an attribute at the specified index (position)
public override void MoveToAttribute(int i)
{
_coreReader.MoveToAttribute(i);
_parsingFunction = ParsingFunction.Read;
}
// Moves to the first attribute of the current node
public override bool MoveToFirstAttribute()
{
if (!_coreReader.MoveToFirstAttribute())
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
// Moves to the next attribute of the current node
public override bool MoveToNextAttribute()
{
if (!_coreReader.MoveToNextAttribute())
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
// If on attribute, moves to the element that contains the attribute node
public override bool MoveToElement()
{
if (!_coreReader.MoveToElement())
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
// Reads and validated next node from the input data
public override bool Read()
{
switch (_parsingFunction)
{
case ParsingFunction.Read:
if (_coreReader.Read())
{
ProcessCoreReaderEvent();
return true;
}
else
{
_validator.CompleteValidation();
return false;
}
case ParsingFunction.ParseDtdFromContext:
_parsingFunction = ParsingFunction.Read;
ParseDtdFromParserContext();
goto case ParsingFunction.Read;
case ParsingFunction.Error:
case ParsingFunction.ReaderClosed:
return false;
case ParsingFunction.Init:
_parsingFunction = ParsingFunction.Read; // this changes the value returned by ReadState
if (_coreReader.ReadState == ReadState.Interactive)
{
ProcessCoreReaderEvent();
return true;
}
else
{
goto case ParsingFunction.Read;
}
case ParsingFunction.ResolveEntityInternally:
_parsingFunction = ParsingFunction.Read;
ResolveEntityInternally();
goto case ParsingFunction.Read;
case ParsingFunction.InReadBinaryContent:
_parsingFunction = ParsingFunction.Read;
_readBinaryHelper.Finish();
goto case ParsingFunction.Read;
default:
Debug.Assert(false);
return false;
}
}
// Closes the input stream ot TextReader, changes the ReadState to Closed and sets all properties to zero/string.Empty
public override void Close()
{
_coreReader.Close();
_parsingFunction = ParsingFunction.ReaderClosed;
}
// Returns NamespaceURI associated with the specified prefix in the current namespace scope.
public override String LookupNamespace(String prefix)
{
return _coreReaderImpl.LookupNamespace(prefix);
}
// Iterates through the current attribute value's text and entity references chunks.
public override bool ReadAttributeValue()
{
if (_parsingFunction == ParsingFunction.InReadBinaryContent)
{
_parsingFunction = ParsingFunction.Read;
_readBinaryHelper.Finish();
}
if (!_coreReader.ReadAttributeValue())
{
return false;
}
_parsingFunction = ParsingFunction.Read;
return true;
}
public override bool CanReadBinaryContent
{
get
{
return true;
}
}
public override int ReadContentAsBase64(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return 0;
}
// init ReadChunkHelper if called the first time
if (_parsingFunction != ParsingFunction.InReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, _outerReader);
}
// set parsingFunction to Read state in order to have a normal Read() behavior when called from readBinaryHelper
_parsingFunction = ParsingFunction.Read;
// call to the helper
int readCount = _readBinaryHelper.ReadContentAsBase64(buffer, index, count);
// setup parsingFunction
_parsingFunction = ParsingFunction.InReadBinaryContent;
return readCount;
}
public override int ReadContentAsBinHex(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return 0;
}
// init ReadChunkHelper when called first time
if (_parsingFunction != ParsingFunction.InReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, _outerReader);
}
// set parsingFunction to Read state in order to have a normal Read() behavior when called from readBinaryHelper
_parsingFunction = ParsingFunction.Read;
// call to the helper
int readCount = _readBinaryHelper.ReadContentAsBinHex(buffer, index, count);
// setup parsingFunction
_parsingFunction = ParsingFunction.InReadBinaryContent;
return readCount;
}
public override int ReadElementContentAsBase64(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return 0;
}
// init ReadChunkHelper if called the first time
if (_parsingFunction != ParsingFunction.InReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, _outerReader);
}
// set parsingFunction to Read state in order to have a normal Read() behavior when called from readBinaryHelper
_parsingFunction = ParsingFunction.Read;
// call to the helper
int readCount = _readBinaryHelper.ReadElementContentAsBase64(buffer, index, count);
// setup parsingFunction
_parsingFunction = ParsingFunction.InReadBinaryContent;
return readCount;
}
public override int ReadElementContentAsBinHex(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return 0;
}
// init ReadChunkHelper when called first time
if (_parsingFunction != ParsingFunction.InReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, _outerReader);
}
// set parsingFunction to Read state in order to have a normal Read() behavior when called from readBinaryHelper
_parsingFunction = ParsingFunction.Read;
// call to the helper
int readCount = _readBinaryHelper.ReadElementContentAsBinHex(buffer, index, count);
// setup parsingFunction
_parsingFunction = ParsingFunction.InReadBinaryContent;
return readCount;
}
// Returns true if the XmlReader knows how to resolve general entities
public override bool CanResolveEntity
{
get
{
return true;
}
}
// Resolves the current entity reference node
public override void ResolveEntity()
{
if (_parsingFunction == ParsingFunction.ResolveEntityInternally)
{
_parsingFunction = ParsingFunction.Read;
}
_coreReader.ResolveEntity();
}
internal XmlReader OuterReader
{
get
{
return _outerReader;
}
set
{
#pragma warning disable 618
Debug.Assert(value is XmlValidatingReader);
#pragma warning restore 618
_outerReader = value;
}
}
internal void MoveOffEntityReference()
{
if (_outerReader.NodeType == XmlNodeType.EntityReference && _parsingFunction != ParsingFunction.ResolveEntityInternally)
{
if (!_outerReader.Read())
{
throw new InvalidOperationException(ResXml.Xml_InvalidOperation);
}
}
}
public override string ReadString()
{
MoveOffEntityReference();
return base.ReadString();
}
//
// IXmlLineInfo members
//
public bool HasLineInfo()
{
return true;
}
// Returns the line number of the current node
public int LineNumber
{
get
{
return ((IXmlLineInfo)_coreReader).LineNumber;
}
}
// Returns the line number of the current node
public int LinePosition
{
get
{
return ((IXmlLineInfo)_coreReader).LinePosition;
}
}
//
// IXmlNamespaceResolver members
//
IDictionary<string, string> IXmlNamespaceResolver.GetNamespacesInScope(XmlNamespaceScope scope)
{
return this.GetNamespacesInScope(scope);
}
string IXmlNamespaceResolver.LookupNamespace(string prefix)
{
return this.LookupNamespace(prefix);
}
string IXmlNamespaceResolver.LookupPrefix(string namespaceName)
{
return this.LookupPrefix(namespaceName);
}
// Internal IXmlNamespaceResolver methods
internal IDictionary<string, string> GetNamespacesInScope(XmlNamespaceScope scope)
{
return _coreReaderNSResolver.GetNamespacesInScope(scope);
}
internal string LookupPrefix(string namespaceName)
{
return _coreReaderNSResolver.LookupPrefix(namespaceName);
}
//
// XmlValidatingReader members
//
// Specufies the validation event handler that wil get warnings and errors related to validation
internal event ValidationEventHandler ValidationEventHandler
{
add
{
_eventHandling.AddHandler(value);
}
remove
{
_eventHandling.RemoveHandler(value); ;
}
}
// returns the schema type of the current node
internal object SchemaType
{
get
{
if (_validationType != ValidationType.None)
{
XmlSchemaType schemaTypeObj = _coreReaderImpl.InternalSchemaType as XmlSchemaType;
if (schemaTypeObj != null && schemaTypeObj.QualifiedName.Namespace == XmlReservedNs.NsXs)
{
return schemaTypeObj.Datatype;
}
return _coreReaderImpl.InternalSchemaType;
}
else
return null;
}
}
// returns the underlying XmlTextReader or XmlTextReaderImpl
internal XmlReader Reader
{
get
{
return (XmlReader)_coreReader;
}
}
// returns the underlying XmlTextReaderImpl
internal XmlTextReaderImpl ReaderImpl
{
get
{
return _coreReaderImpl;
}
}
// specifies the validation type (None, DDT, XSD, XDR, Auto)
internal ValidationType ValidationType
{
get
{
return _validationType;
}
set
{
if (ReadState != ReadState.Initial)
{
throw new InvalidOperationException(ResXml.Xml_InvalidOperation);
}
_validationType = value;
SetupValidation(value);
}
}
// current schema collection used for validationg
#pragma warning disable 618
internal XmlSchemaCollection Schemas
{
get
{
return _schemaCollection;
}
}
#pragma warning restore 618
// Spefifies whether general entities should be automatically expanded or not
internal EntityHandling EntityHandling
{
get
{
return _coreReaderImpl.EntityHandling;
}
set
{
_coreReaderImpl.EntityHandling = value;
}
}
// Specifies XmlResolver used for opening the XML document and other external references
internal XmlResolver XmlResolver
{
set
{
_coreReaderImpl.XmlResolver = value;
_validator.XmlResolver = value;
_schemaCollection.XmlResolver = value;
}
}
// Disables or enables support of W3C XML 1.0 Namespaces
internal bool Namespaces
{
get
{
return _coreReaderImpl.Namespaces;
}
set
{
_coreReaderImpl.Namespaces = value;
}
}
// Returns typed value of the current node (based on the type specified by schema)
public object ReadTypedValue()
{
if (_validationType == ValidationType.None)
{
return null;
}
switch (_outerReader.NodeType)
{
case XmlNodeType.Attribute:
return _coreReaderImpl.InternalTypedValue;
case XmlNodeType.Element:
if (SchemaType == null)
{
return null;
}
XmlSchemaDatatype dtype = (SchemaType is XmlSchemaDatatype) ? (XmlSchemaDatatype)SchemaType : ((XmlSchemaType)SchemaType).Datatype;
if (dtype != null)
{
if (!_outerReader.IsEmptyElement)
{
for (; ; )
{
if (!_outerReader.Read())
{
throw new InvalidOperationException(ResXml.Xml_InvalidOperation);
}
XmlNodeType type = _outerReader.NodeType;
if (type != XmlNodeType.CDATA && type != XmlNodeType.Text &&
type != XmlNodeType.Whitespace && type != XmlNodeType.SignificantWhitespace &&
type != XmlNodeType.Comment && type != XmlNodeType.ProcessingInstruction)
{
break;
}
}
if (_outerReader.NodeType != XmlNodeType.EndElement)
{
throw new XmlException(ResXml.Xml_InvalidNodeType, _outerReader.NodeType.ToString());
}
}
return _coreReaderImpl.InternalTypedValue;
}
return null;
case XmlNodeType.EndElement:
return null;
default:
if (_coreReaderImpl.V1Compat)
{ //If v1 XmlValidatingReader return null
return null;
}
else
{
return Value;
}
}
}
//
// Private implementation methods
//
private void ParseDtdFromParserContext()
{
Debug.Assert(_parserContext != null);
Debug.Assert(_coreReaderImpl.DtdInfo == null);
if (_parserContext.DocTypeName == null || _parserContext.DocTypeName.Length == 0)
{
return;
}
IDtdParser dtdParser = DtdParser.Create();
XmlTextReaderImpl.DtdParserProxy proxy = new XmlTextReaderImpl.DtdParserProxy(_coreReaderImpl);
IDtdInfo dtdInfo = dtdParser.ParseFreeFloatingDtd(_parserContext.BaseURI, _parserContext.DocTypeName, _parserContext.PublicId,
_parserContext.SystemId, _parserContext.InternalSubset, proxy);
_coreReaderImpl.SetDtdInfo(dtdInfo);
ValidateDtd();
}
private void ValidateDtd()
{
IDtdInfo dtdInfo = _coreReaderImpl.DtdInfo;
if (dtdInfo != null)
{
switch (_validationType)
{
#pragma warning disable 618
case ValidationType.Auto:
SetupValidation(ValidationType.DTD);
goto case ValidationType.DTD;
#pragma warning restore 618
case ValidationType.DTD:
case ValidationType.None:
_validator.DtdInfo = dtdInfo;
break;
}
}
}
private void ResolveEntityInternally()
{
Debug.Assert(_coreReader.NodeType == XmlNodeType.EntityReference);
int initialDepth = _coreReader.Depth;
_outerReader.ResolveEntity();
while (_outerReader.Read() && _coreReader.Depth > initialDepth) ;
}
// SxS: This method resolves an Uri but does not expose it to caller. It's OK to disable the SxS warning.
private void SetupValidation(ValidationType valType)
{
_validator = BaseValidator.CreateInstance(valType, this, _schemaCollection, _eventHandling, _processIdentityConstraints);
XmlResolver resolver = GetResolver();
_validator.XmlResolver = resolver;
if (_outerReader.BaseURI.Length > 0)
{
_validator.BaseUri = (resolver == null) ? new Uri(_outerReader.BaseURI, UriKind.RelativeOrAbsolute) : resolver.ResolveUri(null, _outerReader.BaseURI);
}
_coreReaderImpl.ValidationEventHandling = (_validationType == ValidationType.None) ? null : _eventHandling;
}
private static XmlResolver s_tempResolver;
// This is needed because we can't have the setter for XmlResolver public and with internal getter.
private XmlResolver GetResolver()
{
XmlResolver tempResolver = _coreReaderImpl.GetResolver();
if (tempResolver == null && !_coreReaderImpl.IsResolverSet &&
!Microsoft.Xml.XmlReaderSettings.EnableLegacyXmlSettings())
{
// it is safe to return valid resolver as it'll be used in the schema validation
if (s_tempResolver == null)
s_tempResolver = new XmlUrlResolver();
return s_tempResolver;
}
return tempResolver;
}
//
// Internal methods for validators, DOM, XPathDocument etc.
//
private void ProcessCoreReaderEvent()
{
switch (_coreReader.NodeType)
{
case XmlNodeType.Whitespace:
if (_coreReader.Depth > 0 || _coreReaderImpl.FragmentType != XmlNodeType.Document)
{
if (_validator.PreserveWhitespace)
{
_coreReaderImpl.ChangeCurrentNodeType(XmlNodeType.SignificantWhitespace);
}
}
goto default;
case XmlNodeType.DocumentType:
ValidateDtd();
break;
case XmlNodeType.EntityReference:
_parsingFunction = ParsingFunction.ResolveEntityInternally;
goto default;
default:
_coreReaderImpl.InternalSchemaType = null;
_coreReaderImpl.InternalTypedValue = null;
_validator.Validate();
break;
}
}
internal void Close(bool closeStream)
{
_coreReaderImpl.Close(closeStream);
_parsingFunction = ParsingFunction.ReaderClosed;
}
internal BaseValidator Validator
{
get
{
return _validator;
}
set
{
_validator = value;
}
}
internal override XmlNamespaceManager NamespaceManager
{
get
{
return _coreReaderImpl.NamespaceManager;
}
}
internal bool StandAlone
{
get
{
return _coreReaderImpl.StandAlone;
}
}
internal object SchemaTypeObject
{
set
{
_coreReaderImpl.InternalSchemaType = value;
}
}
internal object TypedValueObject
{
get
{
return _coreReaderImpl.InternalTypedValue;
}
set
{
_coreReaderImpl.InternalTypedValue = value;
}
}
internal bool Normalization
{
get
{
return _coreReaderImpl.Normalization;
}
}
internal bool AddDefaultAttribute(SchemaAttDef attdef)
{
return _coreReaderImpl.AddDefaultAttributeNonDtd(attdef);
}
internal override IDtdInfo DtdInfo
{
get { return _coreReaderImpl.DtdInfo; }
}
internal void ValidateDefaultAttributeOnUse(IDtdDefaultAttributeInfo defaultAttribute, XmlTextReaderImpl coreReader)
{
SchemaAttDef attdef = defaultAttribute as SchemaAttDef;
if (attdef == null)
{
return;
}
if (!attdef.DefaultValueChecked)
{
SchemaInfo schemaInfo = coreReader.DtdInfo as SchemaInfo;
if (schemaInfo == null)
{
return;
}
DtdValidator.CheckDefaultValue(attdef, schemaInfo, _eventHandling, coreReader.BaseURI);
}
}
}
}
|