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//
// XmlReaderBodyWriter.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2006 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;
using System.Collections.ObjectModel;
using System.IO;
using System.Runtime.Serialization;
using System.Xml;
namespace System.ServiceModel.Channels
{
internal class XmlReaderBodyWriter : BodyWriter
{
XmlDictionaryReader reader;
string xml_bak;
XmlParserContext parser_context;
bool consumed;
public XmlReaderBodyWriter (string xml, int maxBufferSize, XmlParserContext ctx)
: base (true)
{
var settings = new XmlReaderSettings () {
// FIXME: enable this line (once MaxCharactersInDocument is implemented)
// MaxCharactersInDocument = maxBufferSize,
ConformanceLevel = ConformanceLevel.Fragment
};
reader = XmlDictionaryReader.CreateDictionaryReader (XmlReader.Create (new StringReader (xml), settings, ctx));
reader.MoveToContent ();
xml_bak = xml;
parser_context = ctx;
}
public XmlReaderBodyWriter (XmlDictionaryReader reader)
: base (false)
{
reader.MoveToContent ();
if (reader.NodeType != XmlNodeType.Element)
throw new InvalidOperationException ("Argument XmlReader is expected to be positioned at element");
this.reader = reader;
}
protected override BodyWriter OnCreateBufferedCopy (
int maxBufferSize)
{
#if true
if (xml_bak == null) {
if (consumed)
throw new InvalidOperationException ("Body xml reader is already consumed");
var sw = new StringWriter ();
var xw = XmlDictionaryWriter.CreateDictionaryWriter (XmlWriter.Create (sw));
xw.WriteStartElement (reader.Prefix, reader.LocalName, reader.NamespaceURI);
for (int i = 0; i < reader.AttributeCount; i++) {
reader.MoveToAttribute (i);
if (reader.NamespaceURI != "http://www.w3.org/2000/xmlns/" || xw.LookupPrefix (reader.Value) == null)
xw.WriteAttributeString (reader.Prefix, reader.LocalName, reader.NamespaceURI, reader.Value);
}
reader.MoveToElement ();
var inr = reader as IXmlNamespaceResolver;
if (inr != null)
foreach (var p in inr.GetNamespacesInScope (XmlNamespaceScope.ExcludeXml))
if (xw.LookupPrefix (p.Value) != p.Key)
xw.WriteXmlnsAttribute (p.Key, p.Value);
if (!reader.IsEmptyElement) {
reader.Read ();
while (reader.NodeType != XmlNodeType.EndElement)
xw.WriteNode (reader, false);
}
xw.WriteEndElement ();
xw.Close ();
xml_bak = sw.ToString ();
reader = null;
}
#else // FIXME: this should be better, but somehow doesn't work.
if (xml_bak == null) {
if (consumed)
throw new InvalidOperationException ("Body xml reader is already consumed");
var nss = new XmlNamespaceManager (reader.NameTable);
var nsr = reader as IXmlNamespaceResolver;
if (nsr != null)
foreach (var p in nsr.GetNamespacesInScope (XmlNamespaceScope.ExcludeXml))
nss.AddNamespace (p.Key, p.Value);
parser_context = new XmlParserContext (nss.NameTable, nss, reader.XmlLang, reader.XmlSpace);
xml_bak = reader.ReadOuterXml ();
}
#endif
return new XmlReaderBodyWriter (xml_bak, maxBufferSize, parser_context);
}
protected override void OnWriteBodyContents (
XmlDictionaryWriter writer)
{
if (consumed)
throw new InvalidOperationException ("Body xml reader is already consumed");
if (reader == null && String.IsNullOrEmpty (xml_bak))
return;
XmlReader r = xml_bak != null ? XmlReader.Create (new StringReader (xml_bak), null, parser_context) : reader;
r.MoveToContent ();
writer.WriteNode (r, false);
if (xml_bak == null)
consumed = true;
}
}
}
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