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//
// XmlSyndicationContent.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2007 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.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Runtime.Serialization;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace System.ServiceModel.Syndication
{
public class XmlSyndicationContent : SyndicationContent
{
SyndicationElementExtension writer_extension, reader_extension;
string type;
public XmlSyndicationContent (XmlReader reader)
{
if (reader == null)
throw new ArgumentNullException ("reader");
this.type = reader.GetAttribute ("type");
reader_extension = new SyndicationElementExtension (reader);
}
public XmlSyndicationContent (string type, object dataContractExtension, XmlObjectSerializer dataContractSerializer)
{
this.type = type;
writer_extension = new SyndicationElementExtension (dataContractExtension, dataContractSerializer);
}
public XmlSyndicationContent (string type, object xmlSerializerExtension, XmlSerializer serializer)
{
this.type = type;
writer_extension = new SyndicationElementExtension (xmlSerializerExtension, serializer);
}
public XmlSyndicationContent (string type, SyndicationElementExtension extension)
{
this.type = type;
if (extension == null)
throw new ArgumentNullException ("extension");
this.writer_extension = extension;
}
protected XmlSyndicationContent (XmlSyndicationContent source)
{
if (source == null)
throw new ArgumentNullException ("source");
type = source.type;
writer_extension = source.writer_extension;
reader_extension = source.reader_extension;
}
public override SyndicationContent Clone ()
{
return new XmlSyndicationContent (this);
}
SyndicationElementExtension extension {
get { return writer_extension ?? reader_extension; }
}
public XmlDictionaryReader GetReaderAtContent ()
{
if (writer_extension != null) {
// It is messy, but it somehow returns an XmlReader that has wrapper "content" element for non-XmlReader extension...
XmlReader r = extension.GetReader ();
if (!(r is XmlDictionaryReader))
r = XmlDictionaryReader.CreateDictionaryReader (r);
var ms = new MemoryStream ();
var xw = XmlDictionaryWriter.CreateBinaryWriter (ms);
xw.WriteStartElement ("content", Namespaces.Atom10);
xw.WriteAttributeString ("type", "text/xml");
while (!r.EOF)
xw.WriteNode (r, false);
xw.WriteEndElement ();
xw.Close ();
ms.Position = 0;
var xr = XmlDictionaryReader.CreateBinaryReader (ms, new XmlDictionaryReaderQuotas ());
xr.MoveToContent ();
return xr;
} else {
XmlReader r = extension.GetReader ();
if (!(r is XmlDictionaryReader))
r = XmlDictionaryReader.CreateDictionaryReader (r);
return (XmlDictionaryReader) r;
}
}
public TContent ReadContent<TContent> ()
{
return extension.GetObject<TContent> ();
}
public TContent ReadContent<TContent> (XmlObjectSerializer serializer)
{
return extension.GetObject<TContent> (serializer);
}
public TContent ReadContent<TContent> (XmlSerializer serializer)
{
return extension.GetObject<TContent> (serializer);
}
protected override void WriteContentsTo (XmlWriter writer)
{
if (reader_extension != null) {
// It is messy, but it somehow skips the wrapper element...
var xr = extension.GetReader ();
if (xr.IsEmptyElement)
xr.Read ();
else {
xr.ReadStartElement (); // skip it
while (xr.NodeType != XmlNodeType.EndElement) {
writer.WriteNode (xr, false);
}
xr.ReadEndElement ();
}
}
else
extension.WriteTo (writer);
}
public SyndicationElementExtension Extension {
get { return writer_extension; }
}
public override string Type {
get { return type ?? "text/xml"; }
}
}
}
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