code.grnet.gr Git - pithos-ms-client/blob - trunk/hammock/src/net35/ICSharpCode.SharpZipLib.Silverlight/Serialization/SerializationInfo.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Xml.Linq;
   5
   6 namespace ICSharpCode.SharpZipLib.Silverlight.Serialization
   7 {
   8     /// <summary>
   9     /// Code originally authored by Rockford Lhotka:
  10     /// http://www.lhotka.net/weblog/SilverlightSerialization.aspx,
  11     /// presented here with minor naming and code changes.
  12     /// </summary>
  13     public class SerializationInfo
  14     {
  15         private class ValueEntry
  16         {
  17             public string Name { get; private set; }
  18             public object Value { get; private set; }
  19
  20             public ValueEntry(string name, object value)
  21             {
  22                 Name = name;
  23                 Value = value;
  24             }
  25         }
  26
  27         private readonly Dictionary<string, ValueEntry> _values = new Dictionary<string, ValueEntry>();
  28
  29         internal SerializationInfo(int referenceId)
  30         {
  31             ReferenceId = referenceId;
  32         }
  33
  34         internal int ReferenceId { get; private set; }
  35
  36         public string TypeName { get; set; }
  37
  38         public void AddValue(string name, object value)
  39         {
  40             _values.Add(name, new ValueEntry(name, value));
  41         }
  42
  43         public object GetValue(string name)
  44         {
  45             ValueEntry result;
  46             return _values.TryGetValue(name, out result) ? result.Value : null;
  47         }
  48
  49         internal XElement ToXElement()
  50         {
  51             var root = new XElement("o");
  52             root.Add(new XAttribute("i", ReferenceId));
  53             root.Add(new XAttribute("t", TypeName));
  54
  55             foreach (var item in _values)
  56             {
  57                 var info = item.Value.Value as SerializationInfo;
  58                 if (info == null)
  59                 {
  60                     var list = item.Value.Value as List<SerializationInfo>;
  61                     if (list == null)
  62                     {
  63                         if (item.Value.Value != null)
  64                             root.Add(new XElement("f",
  65                                                   new XAttribute("n", item.Value.Name),
  66                                                   new XAttribute("v", item.Value.Value)));
  67                     }
  68                     else
  69                     {
  70                         var listElement = new XElement("l",
  71                                                        new XAttribute("n", item.Value.Name));
  72                         foreach (var listItem in list)
  73                             listElement.Add(new XElement("r",
  74                                                          new XAttribute("i", listItem.ReferenceId)));
  75                         root.Add(listElement);
  76                     }
  77                 }
  78                 else
  79                     root.Add(new XElement("r",
  80                                           new XAttribute("n", item.Value.Name),
  81                                           new XAttribute("i", info.ReferenceId)));
  82             }
  83             return root;
  84         }
  85
  86         internal SerializationInfo(XElement data)
  87         {
  88             ReferenceId = Convert.ToInt32(data.Attribute("i").Value);
  89             if (data.Name == "o")
  90             {
  91                 TypeName = data.Attribute("t").Value;
  92             }
  93         }
  94
  95         internal void Deserialize(XElement data, XmlFormatter formatter)
  96         {
  97             foreach (var item in data.Elements())
  98             {
  99                 if (item.Name == "f")
 100                 {
 101                     var entry = new ValueEntry(item.Attribute("n").Value, item.Attribute("v").Value);
 102                     _values.Add(entry.Name, entry);
 103                 }
 104                 else if (item.Name == "l")
 105                 {
 106                     var listItems = item.Elements().Select(content => new SerializationInfo(content)).ToList();
 107
 108                     var entry = new ValueEntry(item.Attribute("n").Value, listItems);
 109                     _values.Add(entry.Name, entry);
 110                 }
 111                 else
 112                 {
 113                     var referenceId = Convert.ToInt32(item.Attribute("i").Value);
 114                     var entry = new ValueEntry(
 115                         item.Attribute("n").Value,
 116                         new SerializationInfo(referenceId));
 117                     _values.Add(entry.Name, entry);
 118                 }
 119             }
 120         }
 121     }
 122 }