/[xmltv_parser]/trunk/libxmltv/Core/XMLTV.cs
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Contents of /trunk/libxmltv/Core/XMLTV.cs

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Revision 56 - (show annotations) (download)
Fri Mar 8 12:05:33 2013 UTC (7 years, 9 months ago) by william
File size: 6455 byte(s)

1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using libxmltv.Interfaces;
6 using System.ComponentModel;
7 using System.IO;
8 using System.Reflection;
9 using System.Globalization;
10
11 namespace libxmltv.Core
12 {
13 /// <summary>
14 /// Main class: Creates the XMLTV Loader
15 /// </summary>
16 public static class XMLTV
17 {
18 static XMLTV()
19 {
20 xmltv_logger.Initialize();
21 if (instance == null)
22 {
23 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>();
24 }
25 }
26
27 static IXMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance> instance;
28 public static IXMLTVRuntimeInstance GetInstance() { return instance.GetInstance(); }
29 public static void CreateInstance(params object[] args) { instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(args); }
30
31 public static void CreateFromInstance(object raw_instance, EventHandler<EventArgs> handler)
32 {
33 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(raw_instance,handler);
34 if (OnInstanceCreated != null)
35 {
36 OnInstanceCreated.Invoke(null, new EventArgs());
37 }
38 }
39
40 #region IXMLTVSerializer<IXMLTVRuntimeInstance> members
41 public static bool Serialize(string file) { return instance.Serialize(file); }
42 public static bool Serialize(Stream stream) { return instance.Serialize(stream); }
43 public static IXMLTVRuntimeInstance DeSerialize(string file, out bool status) { return instance.DeSerialize(file, out status); }
44 public static IXMLTVRuntimeInstance DeSerialize(Stream stream, out bool status) { return instance.DeSerialize(stream, out status); }
45 #endregion
46
47 public static void DestroyInstance() { instance.DestroyInstance(); }
48
49 public static EventHandler<EventArgs> OnInstanceCreated
50 {
51 get { return instance.OnInstanceCreated; }
52 set { instance.OnInstanceCreated = value; }
53 }
54 }
55
56 internal class XMLTV<INTERFACE, CLASS> : IDestroyInstance, IXMLTV<INTERFACE, CLASS> where CLASS : class,INTERFACE,new()
57 {
58 public XMLTV()
59 {
60 instance = new CLASS();
61 }
62 public XMLTV(object raw_instance, EventHandler<EventArgs> handler)
63 {
64 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
65 if (instance != null)
66 {
67 IRuntimeInstanceLoader<CLASS> loader = (instance as IRuntimeInstanceLoader<CLASS>);
68 if (loader != null)
69 {
70 SetOnInstanceCreated(handler);
71 instance = loader.LoadFromInstance(instance);
72 }
73 }
74 }
75 public XMLTV(params object[] args)
76 {
77
78 BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
79 CultureInfo culture = CultureInfo.CurrentCulture;
80 try
81 {
82 object raw_instance = Activator.CreateInstance(typeof(CLASS), flags, null, args, culture);
83 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
84 }
85 catch (Exception ex)
86 {
87 xmltv_logger.Error.WriteLine(ex.ToString());
88
89 StringBuilder parameter_builder = new StringBuilder();
90 foreach (object arg in args)
91 {
92 Type type = arg.GetType();
93 parameter_builder.AppendFormat("({0}), ", type.FullName);
94 }
95
96 string type_parameters = parameter_builder.ToString().TrimEnd(new char[] { ',', ' ' });
97 throw new Exception(string.Format("Unable to create instance of: '{0}' with parameters: '{1}'", typeof(CLASS).Name, type_parameters), ex);
98 }
99 }
100
101 private CLASS instance;
102 #region IXMLTV<T> members
103 public IXMLTVSerializer<CLASS> CreateSerializer()
104 {
105 // we must serialize on the CLASS type, using the INTERFACE type is syntatically incorrect
106 ISerializer<CLASS> class_serializer = (instance as ISerializer<CLASS>);
107 if (class_serializer != null)
108 {
109 return class_serializer.Serializer;
110 }
111 else
112 {
113 return new XMLTVSerializer<CLASS>(instance);
114 }
115 }
116 public INTERFACE GetInstance()
117 {
118 return (INTERFACE)instance;
119 }
120 #endregion
121
122 #region IXMLTVSerializer<INTERFACE> members
123 public bool Serialize(string file) { return CreateSerializer().Serialize(file); }
124 public bool Serialize(Stream stream) { return CreateSerializer().Serialize(stream); }
125 public INTERFACE DeSerialize(string file, out bool status) { return CreateSerializer().DeSerialize(file, out status); }
126 public INTERFACE DeSerialize(Stream stream, out bool status) { return CreateSerializer().DeSerialize(stream, out status); }
127 #endregion
128 public void DestroyInstance()
129 {
130 IDestroyInstance destoyer = (instance as IDestroyInstance);
131 if (destoyer != null)
132 {
133 destoyer.DestroyInstance();
134 }
135 else
136 {
137 xmltv_logger.Error.WriteLine("Unable to call DestroyInstance() on type: '{0}'", instance.GetType().Name);
138 }
139 }
140 private void SetOnInstanceCreated(EventHandler<EventArgs> event_instance)
141 {
142 ISetCreatedInstanceEvent setter = (instance as ISetCreatedInstanceEvent);
143 if (setter != null) { setter.SetOnInstanceCreated(event_instance); }
144 }
145 private EventHandler<EventArgs> GetOnInstanceCreated()
146 {
147 IGetCreatedInstanceEvent getter = (instance as IGetCreatedInstanceEvent);
148 if (getter != null) { return getter.GetOnInstanceCreated(); }
149 return null;
150 }
151 public EventHandler<EventArgs> OnInstanceCreated
152 {
153 get { return GetOnInstanceCreated(); }
154 set { SetOnInstanceCreated(value); }
155 }
156 }
157
158 }
159
160

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