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

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Revision 89 - (hide annotations) (download)
Sat Mar 9 14:58:09 2013 UTC (6 years, 4 months ago) by william
File size: 17645 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     Properties = new Dictionary<string, object>();
47     Properties.Add("Id", 0);
48     Properties.Add(XMLTVConstants.Programs.ProgramStart, new DateTime());
49     Properties.Add(XMLTVConstants.Programs.ProgramStop, new DateTime());
50     Properties.Add(XMLTVConstants.Programs.ProgramChannelId, string.Empty);
51     Properties.Add(XMLTVConstants.Programs.ProgramTitle, string.Empty);
52     Properties.Add(XMLTVConstants.Programs.ProgramSubTitle, string.Empty);
53     Properties.Add(XMLTVConstants.Programs.ProgramDescription, string.Empty);
54     }
55    
56     public Dictionary<string, object> Properties { get; private set; }
57    
58     private void InternalDictionaryTestOrThrow()
59     {
60     if (Properties == null) { throw new NullReferenceException("Properties collection has not been initialized."); }
61 william 87 //if (Properties.Count == 0) { throw new IndexOutOfRangeException("Properties collection has 0 elements."); }
62 william 86 }
63 william 87 private void InternalProperyExistsOrThrow(string propertyname)
64 william 86 {
65     InternalDictionaryTestOrThrow();
66 william 87 //if (!ContainsProperty(propertyname)) { throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", propertyname)); }
67 william 86 }
68 william 87
69     public void RemoveProperty(string propertyname)
70 william 86 {
71 william 87 if (ContainsProperty(propertyname))
72     {
73     Properties.Remove(propertyname);
74     }
75     else
76     {
77     throw new ArgumentException(string.Format("Property '{0}' deos not exist", propertyname), propertyname);
78     }
79 william 86 }
80 william 87
81     public void AddProperty(string propertyname) { AddProperty(propertyname, new object()); }
82     public void AddProperty(string propertyname, object propertyvalue)
83 william 86 {
84 william 87 if (!ContainsProperty(propertyname))
85     {
86     Properties.Add(propertyname, propertyvalue);
87     }
88     else
89     {
90     SetProperty(propertyname, propertyvalue);
91     }
92 william 86 }
93 william 87 public bool ContainsProperty(string propertyname)
94     {
95     return Properties.ContainsKey(propertyname);
96     }
97     public object GetProperty(string propertyname)
98     {
99     InternalProperyExistsOrThrow(propertyname);
100     if (!ContainsProperty(propertyname)) { throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", propertyname)); }
101     return Properties[propertyname];
102     }
103     public void SetProperty(string propertyname, object propertyvalue)
104     {
105     InternalProperyExistsOrThrow(propertyname);
106     if (!ContainsProperty(propertyname)) { throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", propertyname)); }
107     Properties[propertyname] = propertyvalue;
108     }
109 william 73 #endregion
110     public override string ToString()
111     {
112 william 86 return string.Format("{0}: {1} - {2} ({3}) ['{4}' <==> '{5}']",
113     GetProperty("Id").ToString(),
114     GetProperty(XMLTVConstants.Programs.ProgramTitle).ToString(),
115 william 87 GetProperty(XMLTVConstants.Programs.ProgramSubTitle).ToString(),
116 william 86 GetProperty(XMLTVConstants.Programs.ProgramChannelId).ToString(),
117     ((DateTime)GetProperty(XMLTVConstants.Programs.ProgramStart)).ToString("yyyy/MM/dd hh:mm tt"),
118     ((DateTime)GetProperty(XMLTVConstants.Programs.ProgramStop)).ToString("yyyy/MM/dd hh:mm tt"));
119 william 73 }
120 william 74
121 william 86
122    
123    
124 william 74 private void UpdateInstance()
125     {
126     bool found_field = false;
127     var instance_type = this.GetInstance().GetType();
128     var fields = instance_type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
129     foreach (var field in fields)
130     {
131 william 76 if (field.FieldType == typeof(List<IXMLTVProgram>))
132 william 74 {
133     found_field = true;
134     try
135     {
136 william 77
137 william 74 var list = (List<IXMLTVProgram>)field.GetValue(this.GetInstance());
138 william 86 this.SetProperty("Id", list.Count + 1);
139 william 74 list.Add(this);
140 william 77 xmltv_logger.Verbose.Debug.WriteLine("Updating instance with program information: {0}", this.ToString());
141 william 74 field.SetValue(this.GetInstance(), list);
142     break;
143     }
144     catch (Exception ex)
145     {
146     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
147     xmltv_logger.Verbose.Error.WriteLine(ex.ToString());
148     }
149     }
150     }
151     if (!found_field)
152     {
153     xmltv_logger.Verbose.Error.WriteLine("Unable to update instance with program information.");
154     }
155     }
156 william 75
157     private void Create(XElement node)
158     {
159 william 86 //if (node.HasAttributes)
160     //{
161     // var start = node.Attribute(XMLTVConstants.Programs.ProgramStart);
162     // this.Start = start == null ? new DateTime() : ParseDate(start.Value);
163     // if (!this.Start.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_start: {0}", start); }
164 william 75
165 william 86 // var stop = node.Attribute(XMLTVConstants.Programs.ProgramStop);
166     // this.Stop = stop == null ? new DateTime() : ParseDate(stop.Value);
167     // if (!this.Stop.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_stop: {0}", stop); }
168 william 75
169 william 86 // var channelid = node.Attribute(XMLTVConstants.Programs.ProgramChannelId);
170 william 88 // if (!string.IsNullOrEmpty(this.channelid)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_channelid: {0}", channelid); }
171 william 86 // IXMLTVChannel channel = new XMLTVChannel();
172     // string _channelid = channelid == null ? string.Empty : channelid.Value;
173     // this.Channel = this.GetInstance().Channels.Find(m => m.Id == _channelid);
174     // if (this.Channel == null) { this.Channel = new XMLTVChannel(); }
175     // if (!string.IsNullOrEmpty(_channelid)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_channel: {0}", this.Channel.ToString()); } //}
176     //try
177     //{
178     // var title = node.Descendants(XMLTVConstants.Programs.ProgramTitle).FirstOrDefault();
179     // this.Title = title == null ? string.Empty : title.Value;
180     //}
181     //catch (Exception) { this.Title = string.Empty; }
182     //if (!string.IsNullOrEmpty(this.Title)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_title: {0}", this.Title == string.Empty ? "empty" : this.Title); }
183     //try
184     //{
185     // var subtitle = node.Descendants(XMLTVConstants.Programs.ProgramSubTitle).FirstOrDefault();
186     // this.SubTitle = subtitle == null ? string.Empty : subtitle.Value;
187     //}
188     //catch (Exception) { this.SubTitle = string.Empty; }
189     //if (!string.IsNullOrEmpty(this.SubTitle)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_subtitle: {0}", this.SubTitle == string.Empty ? "empty" : this.SubTitle); }
190     //try
191     //{
192     // var description = node.Descendants(XMLTVConstants.Programs.ProgramDescription).FirstOrDefault();
193     // this.Description = description == null ? string.Empty : description.Value; ;
194     //}
195     //catch (Exception) { this.Description = string.Empty; }
196     //if (!string.IsNullOrEmpty(this.Description)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_description: {0}", this.Description == string.Empty ? "empty" : this.Description); }
197    
198     //ParseExtraData(node);
199    
200 william 87 var nodes = node.DescendantsAndSelf().ToList();
201 william 86 foreach (var sub_node in nodes)
202 william 75 {
203 william 86 if (this.GetInstance().IsAborting)
204     {
205     break;
206     }
207     CreateHandlerForProgramMetaDataNode(sub_node);
208 william 75 }
209     }
210 william 87 private static DateTime ParseDate(string timeStamp)
211 william 75 {
212     DateTime dt = new DateTime();
213     try
214     {
215     dt = DateTime.ParseExact(timeStamp, "yyyyMMddHHmmss zzzz", System.Globalization.CultureInfo.CurrentCulture);
216     }
217     catch (Exception ex) { throw ex; }
218     return dt;
219     }
220 william 86
221     private void CreateHandlerForProgramMetaDataNode(XElement node)
222     {
223 william 87
224 william 86 Type t = this.GetType();
225     Assembly asm = t.Assembly;
226     var types = asm.GetTypes();
227     var classes = types.ToList().FindAll(
228     m =>
229     m.DeclaringType == t &&
230     m.IsClass &&
231     !m.IsSealed
232     );
233     classes.TrimExcess();
234    
235     object raw_instance = null;
236     BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
237     CultureInfo culture = CultureInfo.CurrentCulture;
238     Type handler_type = null;
239     foreach (var type in classes)
240     {
241     if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVProgram>))
242     {
243     var iface = type.GetInterface("IXMLTVHandler", true);
244     if (iface != null)
245     {
246     var handler_prop = type.GetProperty("Handler");
247     if (handler_prop != null)
248     {
249     var ctors = type.GetConstructors(flags);
250     bool has_default_ctor = false;
251     foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 0) { has_default_ctor = true; } }
252     if (!has_default_ctor) { continue; }
253     raw_instance = Activator.CreateInstance(type, flags, null, new object[0], culture);
254     if (raw_instance != null)
255     {
256     object handler_value = handler_prop.GetValue(raw_instance, null);
257     if (handler_value != null && handler_value.ToString() == node.Name.ToString())
258     {
259     handler_type = type;
260     break;
261     }
262     }
263     }
264     }
265     }
266     }
267     if (handler_type == null)
268     {
269     StringBuilder node_builder = new StringBuilder();
270     node_builder.AppendFormat("<{0} ", node.Name);
271     if (node.HasAttributes) { foreach (var attribute in node.Attributes()) { node_builder.AppendFormat("{0}=\"{1}\" ", attribute.Name, attribute.Value); } }
272     string node_text = string.Format("{0}>", node_builder.ToString().TrimEnd(new char[] { ' ' }));
273     xmltv_logger.Verbose.Warn.WriteLine("Ignoring unhandled extra meta-data: {0}", node_text);
274     }
275 william 87 else
276     {
277     raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] { this, node }, culture);
278     }
279 william 86 }
280    
281    
282    
283     #region sub-classes
284 william 88 #region program title
285 william 86 private class title : XMLTVBase<XMLTVProgram>
286     {
287     public title() : base(null, XMLTVConstants.Programs.ProgramTitle) { }
288     public title(XMLTVProgram instance, XElement node)
289     : base(instance, XMLTVConstants.Programs.ProgramTitle)
290 william 87 {
291 william 88 if(node == null){throw new NullReferenceException("The node instance was null");}
292 william 87 if (node.Value != null)
293     {
294     instance.AddProperty(XMLTVConstants.Programs.ProgramTitle, node.Value);
295 william 88 xmltv_logger.Verbose.Debug.WriteLine("\tprogram_title: {0}", node.Value);
296     }
297     }
298     }
299     #endregion
300     #region program stop/start/channel (programme)
301     private class programme : XMLTVBase<XMLTVProgram>
302     {
303     public programme() : base(null, XMLTVConstants.Programs.RootElement) { }
304     public programme(XMLTVProgram instance, XElement node)
305     : base(instance, XMLTVConstants.Programs.RootElement)
306     {
307     if (node == null) { throw new NullReferenceException("The node instance was null"); }
308     if (node.HasAttributes)
309     {
310     var start = node.Attribute(XMLTVConstants.Programs.ProgramStart);
311     var t_start = start == null ? new DateTime() : ParseDate(start.Value);
312     if (!t_start.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_start: {0}", start); }
313     instance.AddProperty(XMLTVConstants.Programs.ProgramStart, t_start);
314    
315     var stop = node.Attribute(XMLTVConstants.Programs.ProgramStop);
316     var t_stop = stop == null ? new DateTime() : ParseDate(stop.Value);
317     if (!t_stop.Equals(new DateTime())) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_stop: {0}", stop); }
318     instance.AddProperty(XMLTVConstants.Programs.ProgramStop, t_stop);
319    
320     var channelid = node.Attribute(XMLTVConstants.Programs.ProgramChannelId);
321     if (channelid != null)
322     {
323     if (!string.IsNullOrEmpty(channelid.Value)) { xmltv_logger.Verbose.Debug.WriteLine("\tprogram_channelid: {0}", channelid.Value); }
324     instance.AddProperty(XMLTVConstants.Programs.ProgramChannelId, channelid.Value);
325     }
326    
327 william 87 }
328 william 86 }
329     }
330     #endregion
331 william 89
332     #region sub title
333     private class subtitle : XMLTVBase<XMLTVProgram>
334     {
335     public subtitle() : base(null, XMLTVConstants.Programs.ProgramSubTitle) { }
336     public subtitle(XMLTVProgram instance, XElement node)
337     : base(instance, XMLTVConstants.Programs.ProgramSubTitle)
338     {
339     if (node == null) { throw new NullReferenceException("The node instance was null"); }
340     if (node.Value != null)
341     {
342     instance.AddProperty(XMLTVConstants.Programs.ProgramSubTitle, node.Value);
343     xmltv_logger.Verbose.Debug.WriteLine("\tprogram_subtitle: {0}", node.Value);
344     }
345     }
346     }
347 william 88 #endregion
348 william 89 #region sub title
349     private class description : XMLTVBase<XMLTVProgram>
350     {
351     public description() : base(null, XMLTVConstants.Programs.ProgramDescription) { }
352     public description(XMLTVProgram instance, XElement node)
353     : base(instance, XMLTVConstants.Programs.ProgramDescription)
354     {
355     if (node == null) { throw new NullReferenceException("The node instance was null"); }
356     if (node.Value != null)
357     {
358     instance.AddProperty(XMLTVConstants.Programs.ProgramDescription, node.Value);
359     xmltv_logger.Verbose.Debug.WriteLine("\tprogram_description: {0}", node.Value);
360     }
361     }
362     }
363     #endregion
364     #endregion
365 william 73 }
366     }

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