//
// System.Xml.XmlDocument
//
// Authors:
// Daniel Weber (daniel-weber@austin.rr.com)
// Kral Ferch <kral_ferch@hotmail.com>
// Jason Diamond <jason@injektilo.org>
// Miguel de Icaza (miguel@ximian.com)
// Duncan Mak (duncan@ximian.com)
// Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
//
// (C) 2001 Daniel Weber
// (C) 2002 Kral Ferch, Jason Diamond, Miguel de Icaza, Duncan Mak,
// Atsushi Enomoto
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// 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.Globalization;
using System.IO;
using System.Security.Permissions;
using System.Text;
using System.Xml.XPath;
using System.Diagnostics;
using System.Collections;
using Mono.Xml;
#if NET_2_0
using System.Xml.Schema;
using Mono.Xml.XPath;
#endif
namespace System.Xml{
public class XmlDocument : XmlNode, IHasXmlChildNode
{
#region Fields
static readonly Type [] optimal_create_types = new Type [] {typeof (string), typeof (string), typeof (string)};
bool optimal_create_element, optimal_create_attribute;
XmlNameTable nameTable;
string baseURI = String.Empty;
XmlImplementation implementation;
bool preserveWhitespace = false;
XmlResolver resolver;
Hashtable idTable = new Hashtable ();
XmlNameEntryCache nameCache;
XmlLinkedNode lastLinkedChild;
XmlAttribute nsNodeXml;
#if NET_2_0
XmlSchemaSet schemas;
IXmlSchemaInfo schemaInfo;
#endif
// MS.NET rejects undeclared entities _only_ during Load(),
// while ReadNode() never rejects such node. So it signs
// whether we are on Load() or not (MS.NET uses Loader class,
// but we don't have to implement Load() as such)
bool loadMode;
#endregion
#region Constructors
public XmlDocument () : this (null, null)
{
}
protected internal XmlDocument (XmlImplementation imp) : this (imp, null)
{
}
public XmlDocument (XmlNameTable nt) : this (null, nt)
{
}
XmlDocument (XmlImplementation impl, XmlNameTable nt) : base (null)
{
if (impl == null)
implementation = new XmlImplementation ();
else
implementation = impl;
nameTable = (nt != null) ? nt : implementation.InternalNameTable;
nameCache = new XmlNameEntryCache (nameTable);
AddDefaultNameTableKeys ();
resolver = new XmlUrlResolver ();
Type type = GetType ();
optimal_create_element = type.GetMethod ("CreateElement", optimal_create_types).DeclaringType == typeof (XmlDocument);
optimal_create_attribute = type.GetMethod ("CreateAttribute", optimal_create_types).DeclaringType == typeof (XmlDocument);
}
#endregion
#region Events
public event XmlNodeChangedEventHandler NodeChanged;
public event XmlNodeChangedEventHandler NodeChanging;
public event XmlNodeChangedEventHandler NodeInserted;
public event XmlNodeChangedEventHandler NodeInserting;
public event XmlNodeChangedEventHandler NodeRemoved;
public event XmlNodeChangedEventHandler NodeRemoving;
#endregion
#region Properties
internal XmlAttribute NsNodeXml {
get {
if (nsNodeXml == null) {
nsNodeXml = CreateAttribute ("xmlns", "xml", "http://www.w3.org/2000/xmlns/");
nsNodeXml.Value = "http://www.w3.org/XML/1998/namespace";
}
return nsNodeXml;
}
}
XmlLinkedNode IHasXmlChildNode.LastLinkedChild {
get { return lastLinkedChild; }
set { lastLinkedChild = value; }
}
public override string BaseURI {
get {
return baseURI;
}
}
public XmlElement DocumentElement {
get {
XmlNode node = FirstChild;
while (node != null) {
if (node is XmlElement)
break;
node = node.NextSibling;
}
return node != null ? node as XmlElement : null;
}
}
public virtual XmlDocumentType DocumentType {
get {
for (XmlNode n = FirstChild; n != null; n = n.NextSibling) {
if (n.NodeType == XmlNodeType.DocumentType)
return (XmlDocumentType) n;
else if (n.NodeType == XmlNodeType.Element) // document element
return null;
}
return null;
}
}
public XmlImplementation Implementation {
get { return implementation; }
}
public override string InnerXml {
get {
return base.InnerXml;
}
set { // reason for overriding
this.LoadXml (value);
}
}
public override bool IsReadOnly {
get { return false; }
}
internal bool IsStandalone {
get {
return FirstChild != null &&
FirstChild.NodeType == XmlNodeType.XmlDeclaration &&
((XmlDeclaration) this.FirstChild).Standalone == "yes";
}
}
public override string LocalName {
get { return "#document"; }
}
public override string Name {
get { return "#document"; }
}
internal XmlNameEntryCache NameCache {
get { return nameCache; }
}
public XmlNameTable NameTable {
get { return nameTable; }
}
public override XmlNodeType NodeType {
get { return XmlNodeType.Document; }
}
internal override XPathNodeType XPathNodeType {
get {
return XPathNodeType.Root;
}
}
public override XmlDocument OwnerDocument {
get { return null; }
}
public bool PreserveWhitespace {
get { return preserveWhitespace; }
set { preserveWhitespace = value; }
}
internal XmlResolver Resolver {
get { return resolver; }
}
internal override string XmlLang {
get { return String.Empty; }
}
public virtual XmlResolver XmlResolver {
set { resolver = value; }
}
internal override XmlSpace XmlSpace {
get {
return XmlSpace.None;
}
}
internal Encoding TextEncoding {
get {
XmlDeclaration dec = FirstChild as XmlDeclaration;
if (dec == null || dec.Encoding == "")
return null;
return Encoding.GetEncoding (dec.Encoding);
}
}
#if NET_2_0
public override XmlNode ParentNode {
get { return null; }
}
public XmlSchemaSet Schemas {
get {
if (schemas == null)
schemas = new XmlSchemaSet ();
return schemas;
}
set { schemas = value; }
}
public override IXmlSchemaInfo SchemaInfo {
get { return schemaInfo; }
internal set { schemaInfo = value; }
}
#endif
#endregion
#region Methods
internal void AddIdenticalAttribute (XmlAttribute attr)
{
idTable [attr.Value] = attr;
}
public override XmlNode CloneNode (bool deep)
{
XmlDocument doc = implementation != null ? implementation.CreateDocument () : new XmlDocument ();
doc.baseURI = baseURI;
if(deep)
{
for (XmlNode n = FirstChild; n != null; n = n.NextSibling)
doc.AppendChild (doc.ImportNode (n, deep), false);
}
return doc;
}
public XmlAttribute CreateAttribute (string name)
{
string prefix;
string localName;
string namespaceURI = String.Empty;
ParseName (name, out prefix, out localName);
if (prefix == "xmlns" || (prefix == "" && localName == "xmlns"))
namespaceURI = XmlNamespaceManager.XmlnsXmlns;
else if (prefix == "xml")
namespaceURI = XmlNamespaceManager.XmlnsXml;
return CreateAttribute (prefix, localName, namespaceURI );
}
public XmlAttribute CreateAttribute (string qualifiedName, string namespaceURI)
{
string prefix;
string localName;
ParseName (qualifiedName, out prefix, out localName);
return CreateAttribute (prefix, localName, namespaceURI);
}
public virtual XmlAttribute CreateAttribute (string prefix, string localName, string namespaceURI)
{
if ((localName == null) || (localName == String.Empty))
throw new ArgumentException ("The attribute local name cannot be empty.");
return new XmlAttribute (prefix, localName, namespaceURI, this, false, true);
}
internal XmlAttribute CreateAttribute (string prefix, string localName, string namespaceURI, bool atomizedNames, bool checkNamespace)
{
if (optimal_create_attribute)
return new XmlAttribute (prefix, localName, namespaceURI, this, atomizedNames, checkNamespace);
else
return CreateAttribute (prefix, localName, namespaceURI);
}
public virtual XmlCDataSection CreateCDataSection (string data)
{
return new XmlCDataSection (data, this);
}
public virtual XmlComment CreateComment (string data)
{
return new XmlComment (data, this);
}
protected internal virtual XmlAttribute CreateDefaultAttribute (string prefix, string localName, string namespaceURI)
{
XmlAttribute attr = CreateAttribute (prefix, localName, namespaceURI);
attr.isDefault = true;
return attr;
}
public virtual XmlDocumentFragment CreateDocumentFragment ()
{
return new XmlDocumentFragment (this);
}
[PermissionSet (SecurityAction.InheritanceDemand, Unrestricted = true)]
public virtual XmlDocumentType CreateDocumentType (string name, string publicId,
string systemId, string internalSubset)
{
return new XmlDocumentType (name, publicId, systemId, internalSubset, this);
}
private XmlDocumentType CreateDocumentType (DTDObjectModel dtd)
{
return new XmlDocumentType (dtd, this);
}
public XmlElement CreateElement (string name)
{
return CreateElement (name, String.Empty);
}
public XmlElement CreateElement (
string qualifiedName,
string namespaceURI)
{
string prefix;
string localName;
ParseName (qualifiedName, out prefix, out localName);
return CreateElement (prefix, localName, namespaceURI);
}
public virtual XmlElement CreateElement (
string prefix,
string localName,
string namespaceURI)
{
// LAMESPEC: MS.NET has a weird behavior that they can Load() from XmlTextReader
// whose Namespaces = false, but their CreateElement() never allows qualified name.
// I leave it as it is.
return new XmlElement (prefix != null ? prefix : String.Empty, localName, namespaceURI != null ? namespaceURI : String.Empty, this, false);
}
internal XmlElement CreateElement (
string prefix,
string localName,
string namespaceURI,
bool nameAtomized)
{
if ((localName == null) || (localName == String.Empty))
throw new ArgumentException ("The local name for elements or attributes cannot be null or an empty string.");
if (optimal_create_element)
// LAMESPEC: MS.NET has a weird behavior that they can Load() from XmlTextReader
// whose Namespaces = false, but their CreateElement() never allows qualified name.
// I leave it as it is.
return new XmlElement (prefix != null ? prefix : String.Empty, localName, namespaceURI != null ? namespaceURI : String.Empty, this, nameAtomized);
else
return CreateElement (prefix, localName, namespaceURI);
}
public virtual XmlEntityReference CreateEntityReference (string name)
{
return new XmlEntityReference (name, this);
}
#if NET_2_0
public override XPathNavigator CreateNavigator ()
{
return CreateNavigator (this);
}
#endif
protected internal virtual XPathNavigator CreateNavigator (XmlNode node)
{
#if NET_2_0
return new XPathEditableDocument (node).CreateNavigator ();
#else
return new XmlDocumentNavigator (node);
#endif
}
public virtual XmlNode CreateNode (
string nodeTypeString,
string name,
string namespaceURI)
{
return CreateNode (GetNodeTypeFromString (nodeTypeString), name, namespaceURI);
}
public virtual XmlNode CreateNode (
XmlNodeType type,
string name,
string namespaceURI)
{
string prefix = null;
string localName = name;
if ((type == XmlNodeType.Attribute) || (type == XmlNodeType.Element) || (type == XmlNodeType.EntityReference))
ParseName (name, out prefix, out localName);
return CreateNode (type, prefix, localName, namespaceURI);
}
public virtual XmlNode CreateNode (
XmlNodeType type,
string prefix,
string name,
string namespaceURI)
{
switch (type) {
case XmlNodeType.Attribute: return CreateAttribute (prefix, name, namespaceURI);
case XmlNodeType.CDATA: return CreateCDataSection (null);
case XmlNodeType.Comment: return CreateComment (null);
case XmlNodeType.Document: return new XmlDocument ();
case XmlNodeType.DocumentFragment: return CreateDocumentFragment ();
case XmlNodeType.DocumentType: return CreateDocumentType (null, null, null, null);
case XmlNodeType.Element: return CreateElement (prefix, name, namespaceURI);
case XmlNodeType.EntityReference: return CreateEntityReference (null);
case XmlNodeType.ProcessingInstruction: return CreateProcessingInstruction (null, null);
case XmlNodeType.SignificantWhitespace: return CreateSignificantWhitespace (String.Empty);
case XmlNodeType.Text: return CreateTextNode (null);
case XmlNodeType.Whitespace: return CreateWhitespace (String.Empty);
case XmlNodeType.XmlDeclaration: return CreateXmlDeclaration ("1.0", null, null);
default:
#if NET_2_0
throw new ArgumentException (
#else // makes less sense
throw new ArgumentOutOfRangeException (
#endif
String.Format("{0}\nParameter name: {1}",
"Specified argument was out of the range of valid values", type.ToString ()));
}
}
public virtual XmlProcessingInstruction CreateProcessingInstruction (
string target,
string data)
{
return new XmlProcessingInstruction (target, data, this);
}
public virtual XmlSignificantWhitespace CreateSignificantWhitespace (string text)
{
if (!XmlChar.IsWhitespace (text))
throw new ArgumentException ("Invalid whitespace characters.");
return new XmlSignificantWhitespace (text, this);
}
public virtual XmlText CreateTextNode (string text)
{
return new XmlText (text, this);
}
public virtual XmlWhitespace CreateWhitespace (string text)
{
if (!XmlChar.IsWhitespace (text))
throw new ArgumentException ("Invalid whitespace characters.");
return new XmlWhitespace (text, this);
}
public virtual XmlDeclaration CreateXmlDeclaration (string version, string encoding,
string standalone)
{
if (version != "1.0")
throw new ArgumentException ("version string is not correct.");
if ((standalone != null && standalone != String.Empty) && !((standalone == "yes") || (standalone == "no")))
throw new ArgumentException ("standalone string is not correct.");
return new XmlDeclaration (version, encoding, standalone, this);
}
// FIXME: Currently XmlAttributeCollection.SetNamedItem() does
// add to the identity table, but in fact I delayed identity
// check on GetIdenticalAttribute. To make such way complete,
// we have to use MultiMap, not Hashtable.
//
// Well, MS.NET is also fragile around here.
public virtual XmlElement GetElementById (string elementId)
{
XmlAttribute attr = GetIdenticalAttribute (elementId);
return attr != null ? attr.OwnerElement : null;
}
public virtual XmlNodeList GetElementsByTagName (string name)
{
ArrayList nodeArrayList = new ArrayList ();
this.SearchDescendantElements (name, name == "*", nodeArrayList);
return new XmlNodeArrayList (nodeArrayList);
}
public virtual XmlNodeList GetElementsByTagName (string localName, string namespaceURI)
{
ArrayList nodeArrayList = new ArrayList ();
this.SearchDescendantElements (localName, localName == "*", namespaceURI, namespaceURI == "*", nodeArrayList);
return new XmlNodeArrayList (nodeArrayList);
}
private XmlNodeType GetNodeTypeFromString (string nodeTypeString)
{
#if NET_2_0 // actually should be done in any version
if (nodeTypeString == null)
throw new ArgumentNullException ("nodeTypeString");
#endif
switch (nodeTypeString) {
case "attribute": return XmlNodeType.Attribute;
case "cdatasection": return XmlNodeType.CDATA;
case "comment": return XmlNodeType.Comment;
case "document": return XmlNodeType.Document;
case "documentfragment": return XmlNodeType.DocumentFragment;
case "documenttype": return XmlNodeType.DocumentType;
case "element": return XmlNodeType.Element;
case "entityreference": return XmlNodeType.EntityReference;
case "processinginstruction": return XmlNodeType.ProcessingInstruction;
case "significantwhitespace": return XmlNodeType.SignificantWhitespace;
case "text": return XmlNodeType.Text;
case "whitespace": return XmlNodeType.Whitespace;
default:
throw new ArgumentException(String.Format("The string doesn't represent any node type : {0}.", nodeTypeString));
}
}
internal XmlAttribute GetIdenticalAttribute (string id)
{
XmlAttribute attr = this.idTable [id] as XmlAttribute;
if (attr == null)
return null;
if (attr.OwnerElement == null || !attr.OwnerElement.IsRooted) {
// idTable.Remove (id);
return null;
}
return attr;
}
public virtual XmlNode ImportNode (XmlNode node, bool deep)
{
if (node == null)
throw new NullReferenceException ("Null node cannot be imported.");
switch (node.NodeType) {
case XmlNodeType.Attribute:
XmlAttribute srcAtt = node as XmlAttribute;
XmlAttribute dstAtt = this.CreateAttribute (srcAtt.Prefix, srcAtt.LocalName, srcAtt.NamespaceURI);
for (XmlNode n = srcAtt.FirstChild; n != null; n = n.NextSibling)
dstAtt.AppendChild (this.ImportNode (n, deep));
return dstAtt;
case XmlNodeType.CDATA:
return this.CreateCDataSection (node.Value);
case XmlNodeType.Comment:
return this.CreateComment (node.Value);
case XmlNodeType.Document:
throw new XmlException ("Document cannot be imported.");
case XmlNodeType.DocumentFragment:
XmlDocumentFragment df = this.CreateDocumentFragment ();
if(deep)
for (XmlNode n = node.FirstChild; n != null; n = n.NextSibling)
df.AppendChild (this.ImportNode (n, deep));
return df;
case XmlNodeType.DocumentType:
throw new XmlException ("DocumentType cannot be imported.");
case XmlNodeType.Element:
XmlElement src = (XmlElement)node;
XmlElement dst = this.CreateElement (src.Prefix, src.LocalName, src.NamespaceURI);
for (int i = 0; i < src.Attributes.Count; i++) {
XmlAttribute attr = src.Attributes [i];
if(attr.Specified) // copies only specified attributes
dst.SetAttributeNode ((XmlAttribute) this.ImportNode (attr, deep));
}
if(deep)
for (XmlNode n = src.FirstChild; n != null; n = n.NextSibling)
dst.AppendChild (this.ImportNode (n, deep));
return dst;
case XmlNodeType.EndElement:
throw new XmlException ("Illegal ImportNode call for NodeType.EndElement");
case XmlNodeType.EndEntity:
throw new XmlException ("Illegal ImportNode call for NodeType.EndEntity");
case XmlNodeType.EntityReference:
return this.CreateEntityReference (node.Name);
case XmlNodeType.None:
throw new XmlException ("Illegal ImportNode call for NodeType.None");
case XmlNodeType.ProcessingInstruction:
XmlProcessingInstruction pi = node as XmlProcessingInstruction;
return this.CreateProcessingInstruction (pi.Target, pi.Data);
case XmlNodeType.SignificantWhitespace:
return this.CreateSignificantWhitespace (node.Value);
case XmlNodeType.Text:
return this.CreateTextNode (node.Value);
case XmlNodeType.Whitespace:
return this.CreateWhitespace (node.Value);
case XmlNodeType.XmlDeclaration:
XmlDeclaration srcDecl = node as XmlDeclaration;
return this.CreateXmlDeclaration (srcDecl.Version, srcDecl.Encoding, srcDecl.Standalone);
default:
throw new InvalidOperationException ("Cannot import specified node type: " + node.NodeType);
}
}
public virtual void Load (Stream inStream)
{
XmlTextReader reader = new XmlTextReader (inStream, NameTable);
reader.XmlResolver = resolver;
XmlValidatingReader vr = new XmlValidatingReader (reader);
vr.EntityHandling = EntityHandling.ExpandCharEntities;
vr.ValidationType = ValidationType.None;
Load (vr);
}
public virtual void Load (string filename)
{
XmlTextReader xr = null;
try {
xr = new XmlTextReader (filename, NameTable);
xr.XmlResolver = resolver;
XmlValidatingReader vr = new XmlValidatingReader (xr);
vr.EntityHandling = EntityHandling.ExpandCharEntities;
vr.ValidationType = ValidationType.None;
Load (vr);
} finally {
if (xr != null)
xr.Close ();
}
}
public virtual void Load (TextReader txtReader)
{
XmlTextReader xr = new XmlTextReader (txtReader, NameTable);
XmlValidatingReader vr = new XmlValidatingReader (xr);
vr.EntityHandling = EntityHandling.ExpandCharEntities;
vr.ValidationType = ValidationType.None;
xr.XmlResolver = resolver;
Load (vr);
}
public virtual void Load (XmlReader xmlReader)
{
// Reset our document
// For now this just means removing all our children but later this
// may turn out o need to call a private method that resets other things
// like properties we have, etc.
RemoveAll ();
this.baseURI = xmlReader.BaseURI;
// create all contents with use of ReadNode()
try {
loadMode = true;
do {
XmlNode n = ReadNode (xmlReader);
if (n == null)
break;
if (preserveWhitespace || n.NodeType != XmlNodeType.Whitespace)
AppendChild (n, false);
} while (xmlReader.NodeType != XmlNodeType.EndElement);
#if NET_2_0
if (xmlReader.Settings != null)
schemas = xmlReader.Settings.Schemas;
#endif
} finally {
loadMode = false;
}
}
public virtual void LoadXml (string xml)
{
XmlTextReader xmlReader = new XmlTextReader (
xml,
XmlNodeType.Document,
new XmlParserContext (NameTable, new XmlNamespaceManager (NameTable), null, XmlSpace.None));
try {
xmlReader.XmlResolver = resolver;
Load (xmlReader);
} finally {
xmlReader.Close ();
}
}
internal void onNodeChanged (XmlNode node, XmlNode parent, string oldValue, string newValue)
{
if (NodeChanged != null)
NodeChanged (node, new XmlNodeChangedEventArgs
(node, parent, parent, oldValue, newValue, XmlNodeChangedAction.Change));
}
internal void onNodeChanging(XmlNode node, XmlNode parent, string oldValue, string newValue)
{
if (node.IsReadOnly)
throw new ArgumentException ("Node is read-only.");
if (NodeChanging != null)
NodeChanging (node, new XmlNodeChangedEventArgs
(node, parent, parent, oldValue, newValue, XmlNodeChangedAction.Change));
}
internal void onNodeInserted (XmlNode node, XmlNode newParent)
{
if (NodeInserted != null)
NodeInserted (node, new XmlNodeChangedEventArgs
(node, null, newParent, null, null, XmlNodeChangedAction.Insert));
}
internal void onNodeInserting (XmlNode node, XmlNode newParent)
{
if (NodeInserting != null)
NodeInserting (node, new XmlNodeChangedEventArgs
(node, null, newParent, null, null, XmlNodeChangedAction.Insert));
}
internal void onNodeRemoved (XmlNode node, XmlNode oldParent)
{
if (NodeRemoved != null)
NodeRemoved (node, new XmlNodeChangedEventArgs
(node, oldParent, null, null, null, XmlNodeChangedAction.Remove));
}
internal void onNodeRemoving (XmlNode node, XmlNode oldParent)
{
if (NodeRemoving != null)
NodeRemoving (node, new XmlNodeChangedEventArgs
(node, oldParent, null, null, null, XmlNodeChangedAction.Remove));
}
private void ParseName (string name, out string prefix, out string localName)
{
int indexOfColon = name.IndexOf (':');
if (indexOfColon != -1) {
prefix = name.Substring (0, indexOfColon);
localName = name.Substring (indexOfColon + 1);
} else {
prefix = "";
localName = name;
}
}
// Reads XmlReader and creates Attribute Node.
private XmlAttribute ReadAttributeNode (XmlReader reader)
{
if (reader.NodeType == XmlNodeType.Element)
reader.MoveToFirstAttribute ();
else if (reader.NodeType != XmlNodeType.Attribute)
throw new InvalidOperationException (MakeReaderErrorMessage ("bad position to read attribute.", reader));
XmlAttribute attribute = CreateAttribute (reader.Prefix, reader.LocalName, reader.NamespaceURI);
#if NET_2_0
if (reader.SchemaInfo != null)
SchemaInfo = new XmlSchemaInfo (reader.SchemaInfo);
#endif
bool isDefault = reader.IsDefault;
ReadAttributeNodeValue (reader, attribute);
if (isDefault)
attribute.SetDefault ();
return attribute;
}
// Reads attribute from XmlReader and then creates attribute value children. XmlAttribute also uses this.
internal void ReadAttributeNodeValue (XmlReader reader, XmlAttribute attribute)
{
while (reader.ReadAttributeValue ()) {
if (reader.NodeType == XmlNodeType.EntityReference)
attribute.AppendChild (CreateEntityReference (reader.Name), false); // omit node type check
else
// Children of Attribute is restricted to CharacterData and EntityReference (Comment is not allowed).
attribute.AppendChild (CreateTextNode (reader.Value), false); // omit node type check
}
}
[PermissionSet (SecurityAction.InheritanceDemand, Unrestricted = true)]
public virtual XmlNode ReadNode (XmlReader reader)
{
if (PreserveWhitespace)
return ReadNodeCore (reader);
XmlTextReader xtr = reader as XmlTextReader;
if (xtr != null && xtr.WhitespaceHandling ==
WhitespaceHandling.All) {
try {
xtr.WhitespaceHandling = WhitespaceHandling.Significant;
return ReadNodeCore (reader);
} finally {
xtr.WhitespaceHandling = WhitespaceHandling.All;
}
}
else
return ReadNodeCore (reader);
}
XmlNode ReadNodeCore (XmlReader reader)
{
switch (reader.ReadState) {
case ReadState.Interactive:
break;
case ReadState.Initial:
#if NET_2_0
if (reader.SchemaInfo != null)
this.SchemaInfo = new XmlSchemaInfo (reader.SchemaInfo);
#endif
reader.Read ();
break;
default:
return null;
}
XmlNode n;
switch (reader.NodeType) {
case XmlNodeType.Attribute:
string localName = reader.LocalName;
string ns = reader.NamespaceURI;
n = ReadAttributeNode (reader);
// Keep the current reader position on attribute.
reader.MoveToAttribute (localName, ns);
return n;
case XmlNodeType.CDATA:
n = CreateCDataSection (reader.Value);
break;
case XmlNodeType.Comment:
n = CreateComment (reader.Value);
break;
case XmlNodeType.Element:
XmlElement element = CreateElement (reader.Prefix, reader.LocalName, reader.NamespaceURI, reader.NameTable == this.NameTable);
#if NET_2_0
if (reader.SchemaInfo != null)
SchemaInfo = new XmlSchemaInfo (reader.SchemaInfo);
#endif
element.IsEmpty = reader.IsEmptyElement;
// set the element's attributes.
for (int i = 0; i < reader.AttributeCount; i++) {
reader.MoveToAttribute (i);
element.SetAttributeNode (
ReadAttributeNode (reader));
reader.MoveToElement ();
}
// FIXME: the code below should be fine and
// in some XmlReaders it is much faster, but
// caused some breakage in sys.data test.
/*
if (reader.MoveToFirstAttribute ()) {
do {
element.SetAttributeNode (ReadAttributeNode (reader));
} while (reader.MoveToNextAttribute ());
reader.MoveToElement ();
}
*/
reader.MoveToElement ();
int depth = reader.Depth;
if (reader.IsEmptyElement) {
n = element;
break;
}
reader.Read ();
while (reader.Depth > depth) {
n = ReadNodeCore (reader);
if (preserveWhitespace || n.NodeType != XmlNodeType.Whitespace)
element.AppendChild (n, false);
}
n = element;
break;
case XmlNodeType.ProcessingInstruction:
n = CreateProcessingInstruction (reader.Name, reader.Value);
break;
case XmlNodeType.Text:
n = CreateTextNode (reader.Value);
break;
case XmlNodeType.XmlDeclaration:
n = CreateXmlDeclaration ("1.0" , String.Empty, String.Empty);
n.Value = reader.Value;
break;
case XmlNodeType.DocumentType:
DTDObjectModel dtd = null;
IHasXmlParserContext ctxReader = reader as IHasXmlParserContext;
if (ctxReader != null)
dtd = ctxReader.ParserContext.Dtd;
if (dtd != null)
n = CreateDocumentType (dtd);
else
n = CreateDocumentType (reader.Name, reader ["PUBLIC"], reader ["SYSTEM"], reader.Value);
break;
case XmlNodeType.EntityReference:
if (this.loadMode && this.DocumentType != null &&
DocumentType.Entities.GetNamedItem (reader.Name) == null)
throw new XmlException ("Reference to undeclared entity was found.");
n = CreateEntityReference (reader.Name);
// IF argument XmlReader can resolve entity,
// ReadNode() also fills children _from it_.
// In this case, it is not from doctype node.
// (it is kind of sucky design, but it happens
// anyways when we modify doctype node).
//
// It does not happen when !CanResolveEntity.
// (In such case AppendChild() will resolve
// entity content, as XmlEntityReference does.)
if (reader.CanResolveEntity)
{
reader.ResolveEntity ();
reader.Read ();
for (XmlNode child; reader.NodeType != XmlNodeType.EndEntity && (child = ReadNode (reader)) != null;)
n.InsertBefore (child, null, false, false);
}
break;
case XmlNodeType.SignificantWhitespace:
n = CreateSignificantWhitespace (reader.Value);
break;
case XmlNodeType.Whitespace:
n = CreateWhitespace (reader.Value);
break;
case XmlNodeType.None:
return null;
default:
// No idea why MS does throw NullReferenceException ;-P
throw new NullReferenceException ("Unexpected node type " + reader.NodeType + ".");
}
reader.Read ();
return n;
}
private string MakeReaderErrorMessage (string message, XmlReader reader)
{
IXmlLineInfo li = reader as IXmlLineInfo;
if (li != null)
return String.Format (CultureInfo.InvariantCulture, "{0} Line number = {1}, Inline position = {2}.", message, li.LineNumber, li.LinePosition);
else
return message;
}
internal void RemoveIdenticalAttribute (string id)
{
idTable.Remove (id);
}
public virtual void Save (Stream outStream)
{
XmlTextWriter xmlWriter = new XmlTextWriter (outStream, TextEncoding);
if (!PreserveWhitespace)
xmlWriter.Formatting = Formatting.Indented;
WriteContentTo (xmlWriter);
xmlWriter.Flush ();
}
public virtual void Save (string filename)
{
XmlTextWriter xmlWriter = new XmlTextWriter (filename, TextEncoding);
try {
if (!PreserveWhitespace)
xmlWriter.Formatting = Formatting.Indented;
WriteContentTo (xmlWriter);
} finally {
xmlWriter.Close ();
}
}
public virtual void Save (TextWriter writer)
{
XmlTextWriter xmlWriter = new XmlTextWriter (writer);
if (!PreserveWhitespace)
xmlWriter.Formatting = Formatting.Indented;
if (FirstChild != null && FirstChild.NodeType != XmlNodeType.XmlDeclaration)
xmlWriter.WriteStartDocument ();
WriteContentTo (xmlWriter);
xmlWriter.WriteEndDocument ();
xmlWriter.Flush ();
}
public virtual void Save (XmlWriter xmlWriter)
{
//
// This should preserve white space if PreserveWhiteSpace is true
//
bool autoXmlDecl = FirstChild != null && FirstChild.NodeType != XmlNodeType.XmlDeclaration;
if (autoXmlDecl)
xmlWriter.WriteStartDocument ();
WriteContentTo (xmlWriter);
if (autoXmlDecl)
xmlWriter.WriteEndDocument ();
xmlWriter.Flush ();
}
public override void WriteContentTo (XmlWriter w)
{
for (XmlNode n = FirstChild; n != null; n = n.NextSibling)
n.WriteTo (w);
}
public override void WriteTo (XmlWriter w)
{
WriteContentTo (w);
}
private void AddDefaultNameTableKeys ()
{
// The following keys are default of MS .NET Framework
nameTable.Add ("#text");
nameTable.Add ("xml");
nameTable.Add ("xmlns");
nameTable.Add ("#entity");
nameTable.Add ("#document-fragment");
nameTable.Add ("#comment");
nameTable.Add ("space");
nameTable.Add ("id");
nameTable.Add ("#whitespace");
nameTable.Add ("http://www.w3.org/2000/xmlns/");
nameTable.Add ("#cdata-section");
nameTable.Add ("lang");
nameTable.Add ("#document");
nameTable.Add ("#significant-whitespace");
}
internal void CheckIdTableUpdate (XmlAttribute attr, string oldValue, string newValue)
{
if (idTable [oldValue] == attr) {
idTable.Remove (oldValue);
idTable [newValue] = attr;
}
}
#if NET_2_0
public void Validate (ValidationEventHandler handler)
{
Validate (handler, this,
XmlSchemaValidationFlags.ProcessIdentityConstraints);
}
public void Validate (ValidationEventHandler handler,
XmlNode node)
{
Validate (handler, node,
XmlSchemaValidationFlags.ProcessIdentityConstraints);
}
private void Validate (ValidationEventHandler handler,
XmlNode node, XmlSchemaValidationFlags flags)
{
XmlReaderSettings settings = new XmlReaderSettings ();
settings.NameTable = NameTable;
settings.Schemas = schemas;
settings.Schemas.XmlResolver = resolver;
settings.XmlResolver = resolver;
settings.ValidationFlags = flags;
settings.ValidationType = ValidationType.Schema;
XmlReader r = XmlReader.Create (
new XmlNodeReader (node), settings);
while (!r.EOF)
r.Read ();
}
#endif
#endregion
}
}
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