mcs/class/System.ServiceModel.Web/System.ServiceModel.Syndication/SyndicationExtensions.cs

   1 //
   2 // SyndicationExtensions.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2007 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.Collections.ObjectModel;
  31 using System.IO;
  32 using System.Runtime.Serialization;
  33 using System.Text;
  34 using System.Xml;
  35
  36 namespace System.ServiceModel.Syndication
  37 {
  38         // ISyndicationElement helper.
  39         internal class SyndicationExtensions
  40         {
  41                 Dictionary<XmlQualifiedName, string> attributes;
  42                 SyndicationElementExtensionCollection elements;
  43
  44                 public Dictionary<XmlQualifiedName, string> Attributes {
  45                         get {
  46                                 if (attributes == null)
  47                                         attributes = new Dictionary<XmlQualifiedName, string> ();
  48                                 return attributes;
  49                         }
  50                 }
  51
  52                 public SyndicationElementExtensionCollection Elements {
  53                         get {
  54                                 if (elements == null)
  55                                         elements = new SyndicationElementExtensionCollection ();
  56                                 return elements;
  57                         }
  58                 }
  59
  60                 public SyndicationExtensions Clone ()
  61                 {
  62                         SyndicationExtensions ret = new SyndicationExtensions ();
  63                         ret.attributes = attributes == null ? null : new Dictionary<XmlQualifiedName, string> (attributes);
  64                         ret.elements = elements == null ? null : new SyndicationElementExtensionCollection (elements);
  65                         return ret;
  66                 }
  67
  68                 internal void WriteAttributeExtensions (XmlWriter writer, string version)
  69                 {
  70                         if (attributes == null)
  71                                 return;
  72
  73                         foreach (KeyValuePair<XmlQualifiedName,string> pair in attributes)
  74                                 writer.WriteAttributeString (pair.Key.Name, pair.Key.Namespace, pair.Value);
  75                 }
  76
  77                 internal void WriteElementExtensions (XmlWriter writer, string version)
  78                 {
  79                         if (elements == null)
  80                                 return;
  81
  82                         foreach (SyndicationElementExtension el in elements)
  83                                 if (el != null)
  84                                         el.WriteTo (writer);
  85                 }
  86         }
  87 }
  88