/[xmltv_parser]/branches/linux/xmltv_parser/libxmltv/Core/XMLTVProgram.cs
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Annotation of /branches/linux/xmltv_parser/libxmltv/Core/XMLTVProgram.cs

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Revision 91 - (hide annotations) (download)
Sat Mar 9 17:48:02 2013 UTC (6 years, 9 months ago) by william
Original Path: trunk/libxmltv/Core/XMLTVProgram.cs
File size: 12552 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 91 public PropertyDictionary MetaData { get; private set; }
58 william 90 #endregion
59 william 86
60 william 73 #endregion
61     public override string ToString()
62     {
63 william 86 return string.Format("{0}: {1} - {2} ({3}) ['{4}' <==> '{5}']",
64 william 91 MetaData["Id"].ToString(),
65     MetaData[(XMLTVConstants.Programs.ProgramTitle)].ToString(),
66     MetaData[(XMLTVConstants.Programs.ProgramSubTitle)].ToString(),
67     MetaData[(XMLTVConstants.Programs.ProgramChannelId)].ToString(),
68     ((DateTime)MetaData[XMLTVConstants.Programs.ProgramStart]).ToString("yyyy/MM/dd hh:mm tt"),
69     ((DateTime)MetaData[XMLTVConstants.Programs.ProgramStop]).ToString("yyyy/MM/dd hh:mm tt"));
70 william 73 }
71 william 74
72 william 86
73    
74    
75 william 74 private void UpdateInstance()
76     {
77     bool found_field = false;
78     var instance_type = this.GetInstance().GetType();
79     var fields = instance_type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
80     foreach (var field in fields)
81     {
82 william 76 if (field.FieldType == typeof(List<IXMLTVProgram>))
83 william 74 {
84     found_field = true;
85     try
86     {
87 william 77
88 william 74 var list = (List<IXMLTVProgram>)field.GetValue(this.GetInstance());
89 william 91 MetaData["Id"] = list.Count + 1;
90 william 74 list.Add(this);
91 william 77 xmltv_logger.Verbose.Debug.WriteLine("Updating instance with program information: {0}", this.ToString());
92 william 74 field.SetValue(this.GetInstance(), list);
93     break;
94     }
95     catch (Exception ex)
96     {
97     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
98     xmltv_logger.Verbose.Error.WriteLine(ex.ToString());
99     }
100     }
101     }
102     if (!found_field)
103     {
104     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
105     }
106     }
107 william 75
108     private void Create(XElement node)
109     {
110 william 87 var nodes = node.DescendantsAndSelf().ToList();
111 william 86 foreach (var sub_node in nodes)
112 william 75 {
113 william 86 if (this.GetInstance().IsAborting)
114     {
115     break;
116     }
117     CreateHandlerForProgramMetaDataNode(sub_node);
118 william 75 }
119     }
120 william 87 private static DateTime ParseDate(string timeStamp)
121 william 75 {
122     DateTime dt = new DateTime();
123     try
124     {
125     dt = DateTime.ParseExact(timeStamp, "yyyyMMddHHmmss zzzz", System.Globalization.CultureInfo.CurrentCulture);
126     }
127     catch (Exception ex) { throw ex; }
128     return dt;
129     }
130 william 86
131     private void CreateHandlerForProgramMetaDataNode(XElement node)
132     {
133 william 87
134 william 86 Type t = this.GetType();
135     Assembly asm = t.Assembly;
136     var types = asm.GetTypes();
137     var classes = types.ToList().FindAll(
138     m =>
139     m.DeclaringType == t &&
140     m.IsClass &&
141     !m.IsSealed
142     );
143     classes.TrimExcess();
144    
145     object raw_instance = null;
146     BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
147     CultureInfo culture = CultureInfo.CurrentCulture;
148     Type handler_type = null;
149     foreach (var type in classes)
150     {
151     if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVProgram>))
152     {
153     var iface = type.GetInterface("IXMLTVHandler", true);
154     if (iface != null)
155     {
156     var handler_prop = type.GetProperty("Handler");
157     if (handler_prop != null)
158     {
159     var ctors = type.GetConstructors(flags);
160     bool has_default_ctor = false;
161     foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 0) { has_default_ctor = true; } }
162     if (!has_default_ctor) { continue; }
163     raw_instance = Activator.CreateInstance(type, flags, null, new object[0], culture);
164     if (raw_instance != null)
165     {
166     object handler_value = handler_prop.GetValue(raw_instance, null);
167     if (handler_value != null && handler_value.ToString() == node.Name.ToString())
168     {
169     handler_type = type;
170     break;
171     }
172     }
173     }
174     }
175     }
176     }
177     if (handler_type == null)
178     {
179     StringBuilder node_builder = new StringBuilder();
180     node_builder.AppendFormat("<{0} ", node.Name);
181     if (node.HasAttributes) { foreach (var attribute in node.Attributes()) { node_builder.AppendFormat("{0}=\"{1}\" ", attribute.Name, attribute.Value); } }
182     string node_text = string.Format("{0}>", node_builder.ToString().TrimEnd(new char[] { ' ' }));
183     xmltv_logger.Verbose.Warn.WriteLine("Ignoring unhandled extra meta-data: {0}", node_text);
184     }
185 william 87 else
186     {
187     raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] { this, node }, culture);
188     }
189 william 86 }
190    
191    
192    
193     #region sub-classes
194 william 88 #region program title
195 william 86 private class title : XMLTVBase<XMLTVProgram>
196     {
197     public title() : base(null, XMLTVConstants.Programs.ProgramTitle) { }
198     public title(XMLTVProgram instance, XElement node)
199     : base(instance, XMLTVConstants.Programs.ProgramTitle)
200 william 87 {
201 william 88 if(node == null){throw new NullReferenceException("The node instance was null");}
202 william 87 if (node.Value != null)
203     {
204 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramTitle, node.Value);
205 william 88 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_title: {0}", node.Value);
206     }
207     }
208     }
209     #endregion
210     #region program stop/start/channel (programme)
211     private class programme : XMLTVBase<XMLTVProgram>
212     {
213     public programme() : base(null, XMLTVConstants.Programs.RootElement) { }
214     public programme(XMLTVProgram instance, XElement node)
215     : base(instance, XMLTVConstants.Programs.RootElement)
216     {
217     if (node == null) { throw new NullReferenceException("The node instance was null"); }
218     if (node.HasAttributes)
219     {
220     var start = node.Attribute(XMLTVConstants.Programs.ProgramStart);
221     var t_start = start == null ? new DateTime() : ParseDate(start.Value);
222     if (!t_start.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_start: {0}", start); }
223 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramStart, t_start);
224 william 88
225     var stop = node.Attribute(XMLTVConstants.Programs.ProgramStop);
226     var t_stop = stop == null ? new DateTime() : ParseDate(stop.Value);
227     if (!t_stop.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_stop: {0}", stop); }
228 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramStop, t_stop);
229 william 88
230     var channelid = node.Attribute(XMLTVConstants.Programs.ProgramChannelId);
231     if (channelid != null)
232     {
233     if (!string.IsNullOrEmpty(channelid.Value)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_channelid: {0}", channelid.Value); }
234 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramChannelId, channelid.Value);
235 william 88 }
236    
237 william 87 }
238 william 86 }
239     }
240     #endregion
241 william 89
242     #region sub title
243     private class subtitle : XMLTVBase<XMLTVProgram>
244     {
245     public subtitle() : base(null, XMLTVConstants.Programs.ProgramSubTitle) { }
246     public subtitle(XMLTVProgram instance, XElement node)
247     : base(instance, XMLTVConstants.Programs.ProgramSubTitle)
248     {
249     if (node == null) { throw new NullReferenceException("The node instance was null"); }
250     if (node.Value != null)
251     {
252 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramSubTitle, node.Value);
253 william 89 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_subtitle: {0}", node.Value);
254     }
255     }
256     }
257 william 88 #endregion
258 william 89 #region sub title
259     private class description : XMLTVBase<XMLTVProgram>
260     {
261     public description() : base(null, XMLTVConstants.Programs.ProgramDescription) { }
262     public description(XMLTVProgram instance, XElement node)
263     : base(instance, XMLTVConstants.Programs.ProgramDescription)
264     {
265     if (node == null) { throw new NullReferenceException("The node instance was null"); }
266     if (node.Value != null)
267     {
268 william 91 instance.MetaData.AddProperty(XMLTVConstants.Programs.ProgramDescription, node.Value);
269 william 89 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_description: {0}", node.Value);
270     }
271     }
272     }
273     #endregion
274     #endregion
275 william 73 }
276     }

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