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//------------------------------------------------------------------------------
// <copyright file="ConfigXmlDocument.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Configuration
{
using System.Configuration.Internal;
using System.IO;
using System.Xml;
using System.Security.Permissions;
// ConfigXmlDocument - the default Xml Document doesn't track line numbers, and line
// numbers are necessary to display source on config errors.
// These classes wrap corresponding System.Xml types and also carry
// the necessary information for reporting filename / line numbers.
// Note: these classes will go away if webdata ever decides to incorporate line numbers
// into the default XML classes. This class could also go away if webdata brings back
// the UserData property to hang any info off of any node.
[PermissionSet(SecurityAction.LinkDemand, Name="FullTrust")]
public sealed class ConfigXmlDocument : XmlDocument, IConfigErrorInfo {
XmlTextReader _reader;
int _lineOffset;
string _filename;
int IConfigErrorInfo.LineNumber {
get {
if (_reader == null) {
return 0;
}
if (_lineOffset > 0) {
return _reader.LineNumber + _lineOffset - 1;
}
return _reader.LineNumber;
}
}
public int LineNumber { get { return ((IConfigErrorInfo)this).LineNumber; } }
public string Filename {
get { return ConfigurationException.SafeFilename(_filename); }
}
string IConfigErrorInfo.Filename {
get { return _filename; }
}
public override void Load(string filename) {
_filename = filename;
try {
_reader = new XmlTextReader(filename);
_reader.XmlResolver = null;
base.Load(_reader);
}
finally {
if (_reader != null) {
_reader.Close();
_reader = null;
}
}
}
#if UNUSED_CODE
internal XmlNode ReadConfigNode(string filename, XmlTextReader sourceReader) {
_filename = filename;
_reader = sourceReader; // pull line numbers from original reader
try {
return base.ReadNode(sourceReader);
}
finally {
_reader = null;
}
}
#endif
public void LoadSingleElement(string filename, XmlTextReader sourceReader) {
_filename = filename;
_lineOffset = sourceReader.LineNumber;
string outerXml = sourceReader.ReadOuterXml();
try {
_reader = new XmlTextReader(new StringReader(outerXml), sourceReader.NameTable);
base.Load(_reader);
}
finally {
if (_reader != null) {
_reader.Close();
_reader = null;
}
}
}
public override XmlAttribute CreateAttribute( string prefix, string localName, string namespaceUri ) {
return new ConfigXmlAttribute( _filename, LineNumber, prefix, localName, namespaceUri, this );
}
public override XmlElement CreateElement( string prefix, string localName, string namespaceUri) {
return new ConfigXmlElement( _filename, LineNumber, prefix, localName, namespaceUri, this );
}
public override XmlText CreateTextNode(String text) {
return new ConfigXmlText( _filename, LineNumber, text, this );
}
public override XmlCDataSection CreateCDataSection(String data) {
return new ConfigXmlCDataSection( _filename, LineNumber, data, this );
}
public override XmlComment CreateComment(String data) {
return new ConfigXmlComment( _filename, LineNumber, data, this );
}
public override XmlSignificantWhitespace CreateSignificantWhitespace(String data) {
return new ConfigXmlSignificantWhitespace( _filename, LineNumber, data, this );
}
public override XmlWhitespace CreateWhitespace(String data) {
return new ConfigXmlWhitespace( _filename, LineNumber, data, this );
}
}
}
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