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|
//
// XmlSchemaValidatingReader.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// (C)2004 Novell Inc,
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Schema;
using System.Xml.XPath;
#if !NON_MONO
using Mono.Xml;
#endif
#if NET_2_0
using System.Collections.Generic;
using QName = System.Xml.XmlQualifiedName;
using Form = System.Xml.Schema.XmlSchemaForm;
using Use = System.Xml.Schema.XmlSchemaUse;
using ContentType = System.Xml.Schema.XmlSchemaContentType;
using Validity = System.Xml.Schema.XmlSchemaValidity;
using ValidationFlags = System.Xml.Schema.XmlSchemaValidationFlags;
using SOMList = System.Xml.Schema.XmlSchemaObjectCollection;
using SOMObject = System.Xml.Schema.XmlSchemaObject;
using XsElement = System.Xml.Schema.XmlSchemaElement;
using XsAttr = System.Xml.Schema.XmlSchemaAttribute;
using AttrGroup = System.Xml.Schema.XmlSchemaAttributeGroup;
using AttrGroupRef = System.Xml.Schema.XmlSchemaAttributeGroupRef;
using XsDatatype = System.Xml.Schema.XmlSchemaDatatype;
using SchemaType = System.Xml.Schema.XmlSchemaType;
using SimpleType = System.Xml.Schema.XmlSchemaSimpleType;
using ComplexType = System.Xml.Schema.XmlSchemaComplexType;
using SimpleModel = System.Xml.Schema.XmlSchemaSimpleContent;
using SimpleExt = System.Xml.Schema.XmlSchemaSimpleContentExtension;
using SimpleRst = System.Xml.Schema.XmlSchemaSimpleContentRestriction;
using ComplexModel = System.Xml.Schema.XmlSchemaComplexContent;
using ComplexExt = System.Xml.Schema.XmlSchemaComplexContentExtension;
using ComplexRst = System.Xml.Schema.XmlSchemaComplexContentRestriction;
using SimpleTypeRst = System.Xml.Schema.XmlSchemaSimpleTypeRestriction;
using SimpleList = System.Xml.Schema.XmlSchemaSimpleTypeList;
using SimpleUnion = System.Xml.Schema.XmlSchemaSimpleTypeUnion;
using SchemaFacet = System.Xml.Schema.XmlSchemaFacet;
using LengthFacet = System.Xml.Schema.XmlSchemaLengthFacet;
using MinLengthFacet = System.Xml.Schema.XmlSchemaMinLengthFacet;
using Particle = System.Xml.Schema.XmlSchemaParticle;
using Sequence = System.Xml.Schema.XmlSchemaSequence;
using Choice = System.Xml.Schema.XmlSchemaChoice;
using ValException = System.Xml.Schema.XmlSchemaValidationException;
namespace Mono.Xml.Schema
{
internal class XmlSchemaValidatingReader : XmlReader, IXmlLineInfo
{
static readonly XsAttr [] emptyAttributeArray =
new XsAttr [0];
#region Instance Fields
XmlReader reader;
ValidationFlags options;
XmlSchemaValidator v;
XmlValueGetter getter;
XmlSchemaInfo xsinfo;
IXmlLineInfo readerLineInfo;
ValidationType validationType;
IXmlNamespaceResolver nsResolver;
// IHasXmlSchemaInfo sourceReaderSchemaInfo;
int startDepth;
StringBuilder tmpBuilder = new StringBuilder ();
XsAttr [] defaultAttributes = emptyAttributeArray;
int currentDefaultAttribute = -1;
ArrayList defaultAttributesCache = new ArrayList ();
bool defaultAttributeConsumed;
object currentAttrType;
// Extra for XmlSchemaValidtingReader
// (not in XsdValidatingReader)
XsElement element; // ... xsinfo.Element?
object xsiType; // ... xsinfo.SchemaType?
#endregion
public XmlSchemaValidatingReader (XmlReader reader, XmlSchemaSet schemas)
{
nsResolver = reader as IXmlNamespaceResolver;
if (nsResolver == null)
throw new ArgumentException ("Argument XmlReader must implement IXmlNamespaceResolver.");
options = ValidationFlags.ReportValidationWarnings
| ValidationFlags.ProcessSchemaLocation
| ValidationFlags.ProcessInlineSchema;
this.reader = reader;
if (schemas == null)
schemas = new XmlSchemaSet ();
v = new XmlSchemaValidator (
reader.NameTable,
schemas,
nsResolver,
options);
readerLineInfo = reader as IXmlLineInfo;
startDepth = reader.Depth;
getter = delegate () { return Value; };
xsinfo = new XmlSchemaInfo (); // transition cache
v.LineInfoProvider = this;
v.ValidationEventSender = reader;
#if !NON_MONO
v.XmlResolver = schemas.XmlResolver;
#else
v.XmlResolver = new XmlUrlResolver ();
#endif
v.SourceUri = new Uri (null, reader.BaseURI); // FIXME: it is in fact not in MS.NET.
v.Initialize ();
}
public XmlSchemaValidatingReader (XmlReader reader,
XmlReaderSettings settings)
{
IXmlNamespaceResolver nsResolver = reader as IXmlNamespaceResolver;
if (nsResolver == null)
throw new ArgumentException ("Argument XmlReader must implement IXmlNamespaceResolver.");
XmlSchemaSet schemas = settings.Schemas;
if (schemas == null)
schemas = new XmlSchemaSet ();
options = settings.ValidationFlags;
this.reader = reader;
v = new XmlSchemaValidator (
reader.NameTable,
schemas,
nsResolver,
options);
readerLineInfo = reader as IXmlLineInfo;
startDepth = reader.Depth;
getter = delegate () { return Value; };
v.LineInfoProvider = this;
v.ValidationEventSender = reader;
#if !NON_MONO
if (settings != null && settings.Schemas != null)
v.XmlResolver = settings.Schemas.XmlResolver;
else
v.XmlResolver = new XmlUrlResolver ();
#else
v.XmlResolver = new XmlUrlResolver ();
#endif
v.Initialize ();
}
public XmlSchemaValidatingReader (
XPathNavigator navigator,
XmlSchemaSet schemas,
ValidationEventHandler handler)
{
this.reader = navigator.ReadSubtree ();
startDepth = reader.Depth;
IXmlSchemaInfo info = navigator.SchemaInfo;
SchemaType schemaType = info != null ?
info.SchemaType : null;
if (schemas == null && schemaType == null)
throw new ArgumentException ("Neither of XmlSchemaSet is specified, nor XPathNavigator does not provide schema type information on current node.");
if (schemas == null)
schemas = new XmlSchemaSet (reader.NameTable);
v = new XmlSchemaValidator (
navigator.NameTable,
schemas,
navigator,
ValidationFlags.ProcessIdentityConstraints);
readerLineInfo = navigator as IXmlLineInfo;
getter = delegate () { return Value; };
v.LineInfoProvider = this;
v.ValidationEventSender = navigator;
#if !NON_MONO
v.XmlResolver = schemas.XmlResolver;
#else
v.XmlResolver = new XmlUrlResolver ();
#endif
v.Initialize (schemaType);
}
public ValidationEventHandler ValidationEventHandler;
public object ActualType {
get {
return xsiType != null ?
xsiType :
element != null ? element.ElementType : null;
}
}
// clear default attributes, MoveTo*Attribute() transitent
// fields and so on.
private void ResetStateOnRead ()
{
currentDefaultAttribute = -1;
defaultAttributeConsumed = false;
currentAttrType = null;
defaultAttributes = emptyAttributeArray;
}
#region Properties
public int LineNumber {
get { return readerLineInfo != null ? readerLineInfo.LineNumber : 0; }
}
public int LinePosition {
get { return readerLineInfo != null ? readerLineInfo.LinePosition : 0; }
}
public object SchemaType {
get {
if (ReadState != ReadState.Interactive)
return null;
switch (NodeType) {
case XmlNodeType.Element:
if (ActualType != null)
return ActualType;
else
return null;//SourceReaderSchemaType;
case XmlNodeType.Attribute:
if (currentAttrType == null) {
ComplexType ct = ActualType as ComplexType;
if (ct != null) {
XsAttr attdef = ct.AttributeUses [new XmlQualifiedName (LocalName, NamespaceURI)] as XsAttr;
if (attdef != null)
currentAttrType = attdef.AttributeType;
return currentAttrType;
}
// currentAttrType = SourceReaderSchemaType;
}
return currentAttrType;
default:
return null;//SourceReaderSchemaType;
}
}
}
public ValidationType ValidationType {
get { return validationType; }
set {
if (ReadState != ReadState.Initial)
throw new InvalidOperationException ("ValidationType must be set before reading.");
validationType = value;
}
}
public IDictionary<string, string> GetNamespacesInScope (XmlNamespaceScope scope)
{
IXmlNamespaceResolver resolver = reader as IXmlNamespaceResolver;
if (resolver == null)
throw new NotSupportedException ("The input XmlReader does not implement IXmlNamespaceResolver and thus this validating reader cannot collect in-scope namespaces.");
return resolver.GetNamespacesInScope (scope);
}
public string LookupPrefix (string ns)
{
return nsResolver.LookupPrefix (ns);
}
// Public Overriden Properties
public override int AttributeCount {
get {
return reader.AttributeCount + defaultAttributes.Length;
}
}
public override string BaseURI {
get { return reader.BaseURI; }
}
// If this class is used to implement XmlValidatingReader,
// it should be left to DTDValidatingReader. In other cases,
// it depends on the reader's ability.
public override bool CanResolveEntity {
get { return reader.CanResolveEntity; }
}
public override int Depth {
get {
if (currentDefaultAttribute < 0)
return reader.Depth;
if (this.defaultAttributeConsumed)
return reader.Depth + 2;
return reader.Depth + 1;
}
}
public override bool EOF {
get { return reader.EOF; }
}
public override bool HasValue {
get {
if (currentDefaultAttribute < 0)
return reader.HasValue;
return true;
}
}
public override bool IsDefault {
get {
if (currentDefaultAttribute < 0)
return reader.IsDefault;
return true;
}
}
public override bool IsEmptyElement {
get {
if (currentDefaultAttribute < 0)
return reader.IsEmptyElement;
return false;
}
}
public override string this [int i] {
get { return GetAttribute (i); }
}
public override string this [string name] {
get { return GetAttribute (name); }
}
public override string this [string localName, string ns] {
get { return GetAttribute (localName, ns); }
}
int IXmlLineInfo.LineNumber {
get { return readerLineInfo != null ? readerLineInfo.LineNumber : 0; }
}
int IXmlLineInfo.LinePosition {
get { return readerLineInfo != null ? readerLineInfo.LinePosition : 0; }
}
public override string LocalName {
get {
if (currentDefaultAttribute < 0)
return reader.LocalName;
if (defaultAttributeConsumed)
return String.Empty;
return defaultAttributes [currentDefaultAttribute].QualifiedName.Name;
}
}
public override string Name {
get {
if (currentDefaultAttribute < 0)
return reader.Name;
if (defaultAttributeConsumed)
return String.Empty;
XmlQualifiedName qname = defaultAttributes [currentDefaultAttribute].QualifiedName;
string prefix = Prefix;
if (prefix == String.Empty)
return qname.Name;
else
return String.Concat (prefix, ":", qname.Name);
}
}
public override string NamespaceURI {
get {
if (currentDefaultAttribute < 0)
return reader.NamespaceURI;
if (defaultAttributeConsumed)
return String.Empty;
return defaultAttributes [currentDefaultAttribute].QualifiedName.Namespace;
}
}
public override XmlNameTable NameTable {
get { return reader.NameTable; }
}
public override XmlNodeType NodeType {
get {
if (currentDefaultAttribute < 0)
return reader.NodeType;
if (defaultAttributeConsumed)
return XmlNodeType.Text;
return XmlNodeType.Attribute;
}
}
#if !NON_MONO
public XmlParserContext ParserContext {
get { return XmlSchemaUtil.GetParserContext (reader); }
}
#endif
public override string Prefix {
get {
if (currentDefaultAttribute < 0)
return reader.Prefix;
if (defaultAttributeConsumed)
return String.Empty;
XmlQualifiedName qname = defaultAttributes [currentDefaultAttribute].QualifiedName;
string prefix = nsResolver.LookupPrefix (qname.Namespace);
if (prefix == null)
return String.Empty;
else
return prefix;
}
}
public override char QuoteChar {
get { return reader.QuoteChar; }
}
public override ReadState ReadState {
get { return reader.ReadState; }
}
public override IXmlSchemaInfo SchemaInfo {
get { return xsinfo; }
}
public override string Value {
get {
if (currentDefaultAttribute < 0)
return reader.Value;
string value = defaultAttributes [currentDefaultAttribute].ValidatedDefaultValue;
if (value == null)
value = defaultAttributes [currentDefaultAttribute].ValidatedFixedValue;
return value;
}
}
public override string XmlLang {
get {
string xmlLang = reader.XmlLang;
if (xmlLang != null)
return xmlLang;
int idx = this.FindDefaultAttribute ("lang", XmlNamespaceManager.XmlnsXml);
if (idx < 0)
return null;
xmlLang = defaultAttributes [idx].ValidatedDefaultValue;
if (xmlLang == null)
xmlLang = defaultAttributes [idx].ValidatedFixedValue;
return xmlLang;
}
}
public override XmlSpace XmlSpace {
get {
XmlSpace space = reader.XmlSpace;
if (space != XmlSpace.None)
return space;
int idx = this.FindDefaultAttribute ("space", XmlNamespaceManager.XmlnsXml);
if (idx < 0)
return XmlSpace.None;
string spaceSpec = defaultAttributes [idx].ValidatedDefaultValue;
if (spaceSpec == null)
spaceSpec = defaultAttributes [idx].ValidatedFixedValue;
return (XmlSpace) Enum.Parse (typeof (XmlSpace), spaceSpec, false);
}
}
#endregion
#region Public Methods
// Overrided Methods
public override void Close ()
{
reader.Close ();
}
public override string GetAttribute (int i)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.GetAttribute (i);
}
if (reader.AttributeCount > i)
reader.GetAttribute (i);
int defIdx = i - reader.AttributeCount;
if (i < AttributeCount)
return defaultAttributes [defIdx].DefaultValue;
throw new ArgumentOutOfRangeException ("i", i, "Specified attribute index is out of range.");
}
public override string GetAttribute (string name)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.GetAttribute (name);
}
string value = reader.GetAttribute (name);
if (value != null)
return value;
XmlQualifiedName qname = SplitQName (name);
return GetDefaultAttribute (qname.Name, qname.Namespace);
}
private XmlQualifiedName SplitQName (string name)
{
XmlConvert.VerifyName (name);
Exception ex = null;
XmlQualifiedName qname = XmlSchemaUtil.ToQName (reader, name, out ex);
if (ex != null)
return XmlQualifiedName.Empty;
else
return qname;
}
public override string GetAttribute (string localName, string ns)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.GetAttribute (localName, ns);
}
string value = reader.GetAttribute (localName, ns);
if (value != null)
return value;
return GetDefaultAttribute (localName, ns);
}
private string GetDefaultAttribute (string localName, string ns)
{
int idx = this.FindDefaultAttribute (localName, ns);
if (idx < 0)
return null;
string value = defaultAttributes [idx].ValidatedDefaultValue;
if (value == null)
value = defaultAttributes [idx].ValidatedFixedValue;
return value;
}
private int FindDefaultAttribute (string localName, string ns)
{
for (int i = 0; i < this.defaultAttributes.Length; i++) {
XsAttr attr = defaultAttributes [i];
if (attr.QualifiedName.Name == localName &&
(ns == null || attr.QualifiedName.Namespace == ns))
return i;
}
return -1;
}
bool IXmlLineInfo.HasLineInfo ()
{
return readerLineInfo != null && readerLineInfo.HasLineInfo ();
}
public override string LookupNamespace (string prefix)
{
return reader.LookupNamespace (prefix);
}
public override void MoveToAttribute (int i)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
reader.MoveToAttribute (i);
return;
}
currentAttrType = null;
if (i < reader.AttributeCount) {
reader.MoveToAttribute (i);
this.currentDefaultAttribute = -1;
this.defaultAttributeConsumed = false;
}
if (i < AttributeCount) {
this.currentDefaultAttribute = i - reader.AttributeCount;
this.defaultAttributeConsumed = false;
}
else
throw new ArgumentOutOfRangeException ("i", i, "Attribute index is out of range.");
}
public override bool MoveToAttribute (string name)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.MoveToAttribute (name);
}
currentAttrType = null;
bool b = reader.MoveToAttribute (name);
if (b) {
this.currentDefaultAttribute = -1;
this.defaultAttributeConsumed = false;
return true;
}
return MoveToDefaultAttribute (name, null);
}
public override bool MoveToAttribute (string localName, string ns)
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.MoveToAttribute (localName, ns);
}
currentAttrType = null;
bool b = reader.MoveToAttribute (localName, ns);
if (b) {
this.currentDefaultAttribute = -1;
this.defaultAttributeConsumed = false;
return true;
}
return MoveToDefaultAttribute (localName, ns);
}
private bool MoveToDefaultAttribute (string localName, string ns)
{
int idx = this.FindDefaultAttribute (localName, ns);
if (idx < 0)
return false;
currentDefaultAttribute = idx;
defaultAttributeConsumed = false;
return true;
}
public override bool MoveToElement ()
{
currentDefaultAttribute = -1;
defaultAttributeConsumed = false;
currentAttrType = null;
return reader.MoveToElement ();
}
public override bool MoveToFirstAttribute ()
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.MoveToFirstAttribute ();
}
currentAttrType = null;
if (reader.AttributeCount > 0) {
bool b = reader.MoveToFirstAttribute ();
if (b) {
currentDefaultAttribute = -1;
defaultAttributeConsumed = false;
}
return b;
}
if (this.defaultAttributes.Length > 0) {
currentDefaultAttribute = 0;
defaultAttributeConsumed = false;
return true;
}
else
return false;
}
public override bool MoveToNextAttribute ()
{
switch (reader.NodeType) {
case XmlNodeType.XmlDeclaration:
case XmlNodeType.DocumentType:
return reader.MoveToNextAttribute ();
}
currentAttrType = null;
if (currentDefaultAttribute >= 0) {
if (defaultAttributes.Length == currentDefaultAttribute + 1)
return false;
currentDefaultAttribute++;
defaultAttributeConsumed = false;
return true;
}
bool b = reader.MoveToNextAttribute ();
if (b) {
currentDefaultAttribute = -1;
defaultAttributeConsumed = false;
return true;
}
if (defaultAttributes.Length > 0) {
currentDefaultAttribute = 0;
defaultAttributeConsumed = false;
return true;
}
else
return false;
}
public override bool Read ()
{
if (!reader.Read ()) {
v.EndValidation ();
return false;
}
ResetStateOnRead ();
switch (reader.NodeType) {
case XmlNodeType.Element:
string sl = reader.GetAttribute (
"schemaLocation",
XmlSchema.InstanceNamespace);
string noNsSL = reader.GetAttribute (
"noNamespaceSchemaLocation",
XmlSchema.InstanceNamespace);
string xsiType = reader.GetAttribute ("type",
XmlSchema.InstanceNamespace);
string xsiNil = reader.GetAttribute ("nil",
XmlSchema.InstanceNamespace);
v.ValidateElement (reader.LocalName,
reader.NamespaceURI,
xsinfo,
xsiType,
xsiNil,
sl,
noNsSL);
if (reader.MoveToFirstAttribute ()) {
do {
switch (reader.NamespaceURI) {
case XmlSchema.InstanceNamespace:
switch (reader.LocalName) {
case "schemaLocation":
case "noNamespaceSchemaLocation":
case "nil":
case "type":
continue;
}
break;
case XmlNamespaceManager.XmlnsXmlns:
continue;
}
v.ValidateAttribute (
reader.LocalName,
reader.NamespaceURI,
getter,
xsinfo);
} while (reader.MoveToNextAttribute ());
reader.MoveToElement ();
}
v.GetUnspecifiedDefaultAttributes (
defaultAttributesCache);
defaultAttributes = (XsAttr [])
defaultAttributesCache.ToArray (
typeof (XsAttr));
v.ValidateEndOfAttributes (xsinfo);
defaultAttributesCache.Clear ();
if (reader.IsEmptyElement)
goto case XmlNodeType.EndElement;
break;
case XmlNodeType.EndElement:
// FIXME: find out what another overload means.
v.ValidateEndElement (xsinfo);
break;
case XmlNodeType.Text:
v.ValidateText (getter);
break;
case XmlNodeType.SignificantWhitespace:
case XmlNodeType.Whitespace:
v.ValidateWhitespace (getter);
break;
}
return true;
}
public override bool ReadAttributeValue ()
{
if (currentDefaultAttribute < 0)
return reader.ReadAttributeValue ();
if (this.defaultAttributeConsumed)
return false;
defaultAttributeConsumed = true;
return true;
}
#if NET_1_0
public override string ReadInnerXml ()
{
// MS.NET 1.0 has a serious bug here. It skips validation.
return ReadInnerXmlInternal ();
}
public override string ReadOuterXml ()
{
// MS.NET 1.0 has a serious bug here. It skips validation.
return ReadInnerXmlInternal ();
}
// XmlReader.ReadString() should call derived this.Read().
public override string ReadString ()
{
return ReadStringInternal ();
}
#endif
// This class itself does not have this feature.
public override void ResolveEntity ()
{
reader.ResolveEntity ();
}
#endregion
}
}
#endif
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