/[xmltv_parser]/trunk/libxmltv/Core/XMLTVProgram.cs
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Annotation of /trunk/libxmltv/Core/XMLTVProgram.cs

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Revision 97 - (hide annotations) (download)
Sun Mar 10 09:43:49 2013 UTC (6 years, 6 months ago) by william
File size: 12688 byte(s)

1 william 73 using System;
2     using System.Collections.Generic;
3     using System.Linq;
4     using System.Text;
5     using libxmltv.Interfaces;
6 william 74 using System.Xml.Linq;
7     using System.Reflection;
8 william 78 using System.IO;
9     using System.Diagnostics;
10 william 86 using System.Globalization;
11 william 73
12     namespace libxmltv.Core
13     {
14     [Serializable]
15 william 74 internal class XMLTVProgram : XMLTVBase<XMLTVRuntimeInstance>, IXMLTVProgram
16 william 73 {
17 william 88 public XMLTVProgram()
18     : base(null, XMLTVConstants.Programs.RootElement)
19 william 73 {
20 william 86 InternalDictionaryAddKnownProperties();
21    
22 william 73 }
23 william 74 public XMLTVProgram(XMLTVRuntimeInstance instance, XElement node)
24 william 88 : base(instance, XMLTVConstants.Programs.RootElement)
25 william 74 {
26 william 86 InternalDictionaryAddKnownProperties();
27 william 78 try {
28 william 74 xmltv_logger.Verbose.Debug.WriteLine("Creating Instance of XMLTVProgram");
29 william 75 Create(node);
30 william 74 xmltv_logger.Verbose.Debug.WriteLine("Created Instance of XMLTVProgram");
31 william 75 UpdateInstance();
32 william 78 }
33     catch (IOException ex) { Debug.WriteLine(ex.ToString()); }
34 william 74 }
35 william 73 #region IXMLTVProgram members
36 william 86 //public int Id { get; set; }
37     //public DateTime Start { get; set; }
38     //public DateTime Stop { get; set; }
39     //public IXMLTVChannel Channel { get; set; }
40     //public string Title { get; set; }
41     //public string SubTitle { get; set; }
42     //public string Description { get; set; }
43    
44     private void InternalDictionaryAddKnownProperties()
45     {
46 william 91 MetaData = new PropertyDictionary();
47     MetaData.AddProperty("Id", 0);
48     MetaData.AddProperty(XMLTVConstants.Programs.ProgramStart, new DateTime());
49     MetaData.AddProperty(XMLTVConstants.Programs.ProgramStop, new DateTime());
50     MetaData.AddProperty(XMLTVConstants.Programs.ProgramChannelId, string.Empty);
51     MetaData.AddProperty(XMLTVConstants.Programs.ProgramTitle, string.Empty);
52     MetaData.AddProperty(XMLTVConstants.Programs.ProgramSubTitle, string.Empty);
53     MetaData.AddProperty(XMLTVConstants.Programs.ProgramDescription, string.Empty);
54 william 86 }
55    
56 william 90 #region Property Dictionary Support
57 william 97 private PropertyDictionary _MetaData;
58     public PropertyDictionary MetaData { get { return _MetaData; } private set { _MetaData = value; } }
59 william 90 #endregion
60 william 86
61 william 73 #endregion
62     public override string ToString()
63     {
64 william 86 return string.Format("{0}: {1} - {2} ({3}) ['{4}' <==> '{5}']",
65 william 91 MetaData["Id"].ToString(),
66     MetaData[(XMLTVConstants.Programs.ProgramTitle)].ToString(),
67     MetaData[(XMLTVConstants.Programs.ProgramSubTitle)].ToString(),
68     MetaData[(XMLTVConstants.Programs.ProgramChannelId)].ToString(),
69     ((DateTime)MetaData[XMLTVConstants.Programs.ProgramStart]).ToString("yyyy/MM/dd hh:mm tt"),
70     ((DateTime)MetaData[XMLTVConstants.Programs.ProgramStop]).ToString("yyyy/MM/dd hh:mm tt"));
71 william 73 }
72 william 74
73 william 86
74    
75    
76 william 74 private void UpdateInstance()
77     {
78     bool found_field = false;
79     var instance_type = this.GetInstance().GetType();
80     var fields = instance_type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
81     foreach (var field in fields)
82     {
83 william 76 if (field.FieldType == typeof(List<IXMLTVProgram>))
84 william 74 {
85     found_field = true;
86     try
87     {
88 william 77
89 william 74 var list = (List<IXMLTVProgram>)field.GetValue(this.GetInstance());
90 william 91 MetaData["Id"] = list.Count + 1;
91 william 74 list.Add(this);
92 william 77 xmltv_logger.Verbose.Debug.WriteLine("Updating instance with program information: {0}", this.ToString());
93 william 74 field.SetValue(this.GetInstance(), list);
94     break;
95     }
96     catch (Exception ex)
97     {
98     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
99     xmltv_logger.Verbose.Error.WriteLine(ex.ToString());
100     }
101     }
102     }
103     if (!found_field)
104     {
105     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
106     }
107     }
108 william 75
109     private void Create(XElement node)
110     {
111 william 96 CreateHandlerForProgramMetaDataNode(node);
112     var nodes = node.Elements().ToList();
113 william 86 foreach (var sub_node in nodes)
114 william 75 {
115 william 86 if (this.GetInstance().IsAborting)
116     {
117     break;
118     }
119     CreateHandlerForProgramMetaDataNode(sub_node);
120 william 75 }
121     }
122 william 87 private static DateTime ParseDate(string timeStamp)
123 william 75 {
124     DateTime dt = new DateTime();
125     try
126     {
127     dt = DateTime.ParseExact(timeStamp, "yyyyMMddHHmmss zzzz", System.Globalization.CultureInfo.CurrentCulture);
128     }
129     catch (Exception ex) { throw ex; }
130     return dt;
131     }
132 william 86
133     private void CreateHandlerForProgramMetaDataNode(XElement node)
134     {
135 william 87
136 william 86 Type t = this.GetType();
137     Assembly asm = t.Assembly;
138     var types = asm.GetTypes();
139     var classes = types.ToList().FindAll(
140     m =>
141     m.DeclaringType == t &&
142     m.IsClass &&
143     !m.IsSealed
144     );
145     classes.TrimExcess();
146    
147     object raw_instance = null;
148     BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
149     CultureInfo culture = CultureInfo.CurrentCulture;
150     Type handler_type = null;
151     foreach (var type in classes)
152     {
153     if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVProgram>))
154     {
155     var iface = type.GetInterface("IXMLTVHandler", true);
156     if (iface != null)
157     {
158     var handler_prop = type.GetProperty("Handler");
159     if (handler_prop != null)
160     {
161     var ctors = type.GetConstructors(flags);
162     bool has_default_ctor = false;
163     foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 0) { has_default_ctor = true; } }
164     if (!has_default_ctor) { continue; }
165     raw_instance = Activator.CreateInstance(type, flags, null, new object[0], culture);
166     if (raw_instance != null)
167     {
168     object handler_value = handler_prop.GetValue(raw_instance, null);
169     if (handler_value != null && handler_value.ToString() == node.Name.ToString())
170     {
171     handler_type = type;
172     break;
173     }
174     }
175     }
176     }
177     }
178     }
179     if (handler_type == null)
180     {
181     StringBuilder node_builder = new StringBuilder();
182     node_builder.AppendFormat("<{0} ", node.Name);
183     if (node.HasAttributes) { foreach (var attribute in node.Attributes()) { node_builder.AppendFormat("{0}=\"{1}\" ", attribute.Name, attribute.Value); } }
184     string node_text = string.Format("{0}>", node_builder.ToString().TrimEnd(new char[] { ' ' }));
185     xmltv_logger.Verbose.Warn.WriteLine("Ignoring unhandled extra meta-data: {0}", node_text);
186     }
187 william 87 else
188     {
189     raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] { this, node }, culture);
190     }
191 william 86 }
192    
193    
194    
195     #region sub-classes
196 william 88 #region program title
197 william 86 private class title : XMLTVBase<XMLTVProgram>
198     {
199     public title() : base(null, XMLTVConstants.Programs.ProgramTitle) { }
200     public title(XMLTVProgram instance, XElement node)
201     : base(instance, XMLTVConstants.Programs.ProgramTitle)
202 william 87 {
203 william 88 if(node == null){throw new NullReferenceException("The node instance was null");}
204 william 87 if (node.Value != null)
205     {
206 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramTitle, node.Value);
207 william 88 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_title: {0}", node.Value);
208     }
209     }
210     }
211     #endregion
212     #region program stop/start/channel (programme)
213     private class programme : XMLTVBase<XMLTVProgram>
214     {
215     public programme() : base(null, XMLTVConstants.Programs.RootElement) { }
216     public programme(XMLTVProgram instance, XElement node)
217     : base(instance, XMLTVConstants.Programs.RootElement)
218     {
219     if (node == null) { throw new NullReferenceException("The node instance was null"); }
220     if (node.HasAttributes)
221     {
222     var start = node.Attribute(XMLTVConstants.Programs.ProgramStart);
223     var t_start = start == null ? new DateTime() : ParseDate(start.Value);
224     if (!t_start.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_start: {0}", start); }
225 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramStart, t_start);
226 william 88
227     var stop = node.Attribute(XMLTVConstants.Programs.ProgramStop);
228     var t_stop = stop == null ? new DateTime() : ParseDate(stop.Value);
229     if (!t_stop.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_stop: {0}", stop); }
230 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramStop, t_stop);
231 william 88
232     var channelid = node.Attribute(XMLTVConstants.Programs.ProgramChannelId);
233     if (channelid != null)
234     {
235     if (!string.IsNullOrEmpty(channelid.Value)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_channelid: {0}", channelid.Value); }
236 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramChannelId, channelid.Value);
237 william 88 }
238    
239 william 87 }
240 william 86 }
241     }
242     #endregion
243 william 89
244     #region sub title
245     private class subtitle : XMLTVBase<XMLTVProgram>
246     {
247     public subtitle() : base(null, XMLTVConstants.Programs.ProgramSubTitle) { }
248     public subtitle(XMLTVProgram instance, XElement node)
249     : base(instance, XMLTVConstants.Programs.ProgramSubTitle)
250     {
251     if (node == null) { throw new NullReferenceException("The node instance was null"); }
252     if (node.Value != null)
253     {
254 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramSubTitle, node.Value);
255 william 89 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_subtitle: {0}", node.Value);
256     }
257     }
258     }
259 william 88 #endregion
260 william 89 #region sub title
261     private class description : XMLTVBase<XMLTVProgram>
262     {
263     public description() : base(null, XMLTVConstants.Programs.ProgramDescription) { }
264     public description(XMLTVProgram instance, XElement node)
265     : base(instance, XMLTVConstants.Programs.ProgramDescription)
266     {
267     if (node == null) { throw new NullReferenceException("The node instance was null"); }
268     if (node.Value != null)
269     {
270 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramDescription, node.Value);
271 william 89 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_description: {0}", node.Value);
272     }
273     }
274     }
275     #endregion
276     #endregion
277 william 73 }
278     }

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