summaryrefslogtreecommitdiffstats
path: root/win/CS/HandBrake.ApplicationServices/Collections/SerializableDictionary.cs
blob: b492bc2f087ce7b5374861b925cc782cf82b96fe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
/*  SerializableDictionary.cs $
    This file is part of the HandBrake source code.
    Homepage: <http://handbrake.fr>.
    It may be used under the terms of the GNU General Public License. */

namespace HandBrake.ApplicationServices.Collections
{
    using System.Collections.Generic;
    using System.Runtime.Serialization;
    using System.Xml.Serialization;

    /// <summary>
    /// A Serializable Dictionary
    /// </summary>
    /// <typeparam name="TKey">
    /// The Key Type
    /// </typeparam>
    /// <typeparam name="TValue">
    /// The Value Type
    /// </typeparam>
    [XmlRoot("dictionary")]
    public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable
    {
        #region IXmlSerializable Members

        /// <summary>
        /// Get the Schema
        /// </summary>
        /// <returns>
        /// Nothing. We don't use this.
        /// </returns>
        public System.Xml.Schema.XmlSchema GetSchema()
        {
            return null;
        }

        /// <summary>
        /// Deserialize some XML into a dictionary
        /// </summary>
        /// <param name="reader">
        /// The reader.
        /// </param>
        public void ReadXml(System.Xml.XmlReader reader)
        {
            XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));
            XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

            bool wasEmpty = reader.IsEmptyElement;
            reader.Read();

            if (wasEmpty)
                return;

            while (reader.NodeType != System.Xml.XmlNodeType.EndElement)
            {
                reader.ReadStartElement("item");

                reader.ReadStartElement("key");
                TKey key = (TKey)keySerializer.Deserialize(reader);
                reader.ReadEndElement();

                reader.ReadStartElement("value");
                TValue value = (TValue)valueSerializer.Deserialize(reader);
                reader.ReadEndElement();

                this.Add(key, value);

                reader.ReadEndElement();
                reader.MoveToContent();
            }
            reader.ReadEndElement();
        }

        /// <summary>
        /// Write the Dictionary out to XML
        /// </summary>
        /// <param name="writer">
        /// The writer.
        /// </param>
        public void WriteXml(System.Xml.XmlWriter writer)
        {
            XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));
            XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

            foreach (TKey key in this.Keys)
            {
                writer.WriteStartElement("item");

                writer.WriteStartElement("key");
                keySerializer.Serialize(writer, key);
                writer.WriteEndElement();

                writer.WriteStartElement("value");
                TValue value = this[key];
                valueSerializer.Serialize(writer, value);
                writer.WriteEndElement();

                writer.WriteEndElement();
            }
        }
        #endregion
    }
}