130 lines
4.6 KiB
C#
130 lines
4.6 KiB
C#
//
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// XmlReaderBodyWriter.cs
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//
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// Author:
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// Atsushi Enomoto <atsushi@ximian.com>
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//
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// Copyright (C) 2006 Novell, Inc. http://www.novell.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.ObjectModel;
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using System.IO;
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using System.Runtime.Serialization;
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using System.Xml;
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namespace System.ServiceModel.Channels
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{
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internal class XmlReaderBodyWriter : BodyWriter
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{
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XmlDictionaryReader reader;
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string xml_bak;
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XmlParserContext parser_context;
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bool consumed;
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public XmlReaderBodyWriter (string xml, int maxBufferSize, XmlParserContext ctx)
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: base (true)
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{
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var settings = new XmlReaderSettings () {
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// FIXME: enable this line (once MaxCharactersInDocument is implemented)
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// MaxCharactersInDocument = maxBufferSize,
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ConformanceLevel = ConformanceLevel.Fragment
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};
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reader = XmlDictionaryReader.CreateDictionaryReader (XmlReader.Create (new StringReader (xml), settings, ctx));
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reader.MoveToContent ();
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xml_bak = xml;
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parser_context = ctx;
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}
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public XmlReaderBodyWriter (XmlDictionaryReader reader)
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: base (false)
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{
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reader.MoveToContent ();
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if (reader.NodeType != XmlNodeType.Element)
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throw new InvalidOperationException ("Argument XmlReader is expected to be positioned at element");
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this.reader = reader;
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}
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protected override BodyWriter OnCreateBufferedCopy (
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int maxBufferSize)
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{
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#if true
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if (xml_bak == null) {
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if (consumed)
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throw new InvalidOperationException ("Body xml reader is already consumed");
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var sw = new StringWriter ();
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var xw = XmlDictionaryWriter.CreateDictionaryWriter (XmlWriter.Create (sw));
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xw.WriteStartElement (reader.Prefix, reader.LocalName, reader.NamespaceURI);
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for (int i = 0; i < reader.AttributeCount; i++) {
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reader.MoveToAttribute (i);
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if (reader.NamespaceURI != "http://www.w3.org/2000/xmlns/" || xw.LookupPrefix (reader.Value) == null)
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xw.WriteAttributeString (reader.Prefix, reader.LocalName, reader.NamespaceURI, reader.Value);
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}
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reader.MoveToElement ();
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var inr = reader as IXmlNamespaceResolver;
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if (inr != null)
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foreach (var p in inr.GetNamespacesInScope (XmlNamespaceScope.ExcludeXml))
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if (xw.LookupPrefix (p.Value) != p.Key)
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xw.WriteXmlnsAttribute (p.Key, p.Value);
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if (!reader.IsEmptyElement) {
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reader.Read ();
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while (reader.NodeType != XmlNodeType.EndElement)
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xw.WriteNode (reader, false);
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}
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xw.WriteEndElement ();
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xw.Close ();
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xml_bak = sw.ToString ();
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reader = null;
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}
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#else // FIXME: this should be better, but somehow doesn't work.
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if (xml_bak == null) {
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if (consumed)
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throw new InvalidOperationException ("Body xml reader is already consumed");
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var nss = new XmlNamespaceManager (reader.NameTable);
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var nsr = reader as IXmlNamespaceResolver;
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if (nsr != null)
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foreach (var p in nsr.GetNamespacesInScope (XmlNamespaceScope.ExcludeXml))
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nss.AddNamespace (p.Key, p.Value);
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parser_context = new XmlParserContext (nss.NameTable, nss, reader.XmlLang, reader.XmlSpace);
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xml_bak = reader.ReadOuterXml ();
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}
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#endif
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return new XmlReaderBodyWriter (xml_bak, maxBufferSize, parser_context);
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}
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protected override void OnWriteBodyContents (
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XmlDictionaryWriter writer)
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{
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if (consumed)
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throw new InvalidOperationException ("Body xml reader is already consumed");
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if (reader == null && String.IsNullOrEmpty (xml_bak))
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return;
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XmlReader r = xml_bak != null ? XmlReader.Create (new StringReader (xml_bak), null, parser_context) : reader;
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r.MoveToContent ();
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writer.WriteNode (r, false);
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if (xml_bak == null)
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consumed = true;
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}
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}
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}
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