/[xmltv_parser]/trunk/libxmltv/Core/XMLTVRuntimeInstance.cs
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Diff of /trunk/libxmltv/Core/XMLTVRuntimeInstance.cs

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--- trunk/libxmltv/Core/XMLTVRuntimeInstance.cs	2013/03/09 09:29:40	72
+++ trunk/libxmltv/Core/XMLTVRuntimeInstance.cs	2013/03/09 12:41:07	83
@@ -9,6 +9,7 @@
 using System.Reflection;
 using System.Globalization;
 using System.Diagnostics;
+using System.Xml.Linq;
 
 namespace libxmltv.Core
 {
@@ -40,7 +41,6 @@
             }
         }
         
-
         private void OnCreatedInstance(object sender, EventArgs e)
         {
             if (OnInstanceCreated != null) { OnInstanceCreated.Invoke(sender, e); }
@@ -49,8 +49,8 @@
         private void init()
         {
             this.Source = new XMLTVSource();
-            this.Channels = new Dictionary<string, IXMLTVChannel>();
-            this.Programs = new Dictionary<int, IXMLTVProgram>();
+            this.Channels = new List<IXMLTVChannel>();
+            this.Programs = new List<IXMLTVProgram>();
             this.XmlFile_Name = string.Empty;
             this.XmlFile_FullName = string.Empty;
             this.XmlDoc = string.Empty;
@@ -68,13 +68,13 @@
         public string XmlFile_FullName { get { return _XmlFile_FullName; } set { _XmlFile_FullName = value; } }
 
         private string _XmlDoc;
-        public string XmlDoc { get { return _XmlDoc; } set { _XmlDoc = value; } }               
+        public string XmlDoc { get { return _XmlDoc; } set { _XmlDoc = value; } }
         private IXMLTVSource _Source;
         public IXMLTVSource Source { get { return _Source; } set { _Source = value; } }
-        private Dictionary<string, IXMLTVChannel> _Channels;
-        public Dictionary<string, IXMLTVChannel> Channels { get { return _Channels; } set { _Channels = value; } }
-        private Dictionary<int, IXMLTVProgram> _Programs;
-        public Dictionary<int, IXMLTVProgram> Programs { get { return _Programs; } set { _Programs = value; } }
+        private List<IXMLTVChannel> _Channels;
+        public List<IXMLTVChannel> Channels { get { return _Channels; } set { _Channels = value; } }
+        private List<IXMLTVProgram> _Programs;
+        public List<IXMLTVProgram> Programs { get { return _Programs; } set { _Programs = value; } }
         #endregion       
         #region IOnInstanceCreated members
         [NonSerialized]
@@ -118,8 +118,9 @@
             {
                 throw new NullReferenceException("Failed to load from instance because the instance is null.");
             }
-            CloneFromInstance(ref instance);
             xmltv_logger.Debug.WriteLine("Loading from instance...");
+            CloneFromInstance(ref instance);            
+            xmltv_logger.Debug.WriteLine("Loaded from instance...");
             if (this.Source != null)
             {
                 xmltv_logger.Info.WriteLine("Source Loaded: '{0}' Created by '{1}' - original source file: '{2}'", this.Source.SourceName, this.Source.GeneratorName, this.XmlFile_FullName);
@@ -146,8 +147,7 @@
             {
                 xmltv_logger.Error.WriteLine("Programs Property is null.");
                 throw new NullReferenceException("Programs Property is null.");
-            }
-            xmltv_logger.Debug.WriteLine("Loaded from instance...");
+            }            
             return instance;
         }
         #endregion
@@ -218,6 +218,11 @@
 
     internal class XMLTVInstance : IGetInstance<XMLTVRuntimeInstance>, IDisposable
     {
+        public void Dispose()
+        {
+            //throw new NotImplementedException();
+        }
+
         private XMLTVRuntimeInstance gInstance;
         public XMLTVRuntimeInstance GetInstance() { return gInstance; }
         public XMLTVInstance(string xmlfile) 
@@ -225,7 +230,9 @@
             try
             {
                 CreateLoader(xmlfile);
+                CreateParser();
             }
+            catch (ThreadAbortException ex) { Debug.WriteLine(ex.ToString()); }
             catch (Exception ex)
             {
                 xmltv_logger.Error.WriteLine(ex.ToString());
@@ -234,48 +241,182 @@
 
         private void CreateLoader(string xml_file)
         {
+            xmltv_logger.Verbose.Debug.WriteLine("Creating loader handle");
             gInstance = new XMLTVRuntimeInstance();
-            bool bound_to_ctor = false;
             object raw_instance = null;
+            BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
+            CultureInfo culture = CultureInfo.CurrentCulture;
             Assembly asm = Assembly.GetExecutingAssembly();
             var types = asm.GetTypes();
-
+            Type handler_type = null;
             foreach (var type in types)
             {
                 if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVRuntimeInstance>))
                 {
-                    xmltv_logger.Verbose.Debug.WriteLine("Type: '{0}' Base: '{1}'", type.Name, type.BaseType == null ? "none" : type.BaseType.Name);
-
-                    BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
-                    CultureInfo culture = CultureInfo.CurrentCulture;
+                    //xmltv_logger.Verbose.Debug.WriteLine("Type: '{0}' Base: '{1}'", type.Name, type.BaseType == null ? "none" : type.BaseType.Name);                  
                     object[] args = new object[] { xml_file, gInstance };
-                    try
-                    {
-                        raw_instance = Activator.CreateInstance(type, flags, null, args, culture);
-                        bound_to_ctor = true;
-                    }
-                    catch (Exception ex)
+                    var iface = type.GetInterface("IXMLTVHandler", true);
+                    if (iface != null)
                     {
-                        Debug.WriteLine(ex.ToString());
+                        var handler_prop = type.GetProperty("Handler");
+                        if (handler_prop != null)
+                        {
+                            var ctors = type.GetConstructors(flags);
+                            bool has_string_ctor = false;
+                            foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 1 && ctor.GetParameters()[0].ParameterType == typeof(string)) { has_string_ctor = true; } }
+                            if (!has_string_ctor) { continue; }
+                            raw_instance = Activator.CreateInstance(type, flags, null, new object[] { xml_file}, culture);
+                            if (raw_instance != null)
+                            {
+                                object handler_value = handler_prop.GetValue(raw_instance, null);
+                                if (handler_value != null && handler_value.ToString() == xml_file)
+                                {
+                                    handler_type = type;
+                                    break;
+                                }
+                            }
+                        }
                     }
                 }                
             }
-            if (!bound_to_ctor) { throw new Exception("Unable to find a compatible XMLTV Data Loader."); }
+            if (handler_type == null) { throw new Exception("Unable to find a compatible XMLTV Data Loader."); }
+            xmltv_logger.Verbose.Debug.WriteLine("Created loader handle");
+            raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] {xml_file , gInstance }, culture);
             if (raw_instance == null) { throw new NullReferenceException("Found a compatible XMLTV Data Loader, but it returned invalid data."); }
             IGetInstance<XMLTVRuntimeInstance> getter_instance = (raw_instance as IGetInstance<XMLTVRuntimeInstance>);
             if (getter_instance != null) { gInstance = getter_instance.GetInstance(); }
             else { throw new Exception("Found a compatible XMLTV Data Loader, but was unable to obtain the instance holding the data"); }
         }
-        private void CreateParser(XMLTVRuntimeInstance instance)
+        private void CreateParser()
         {
+            var doc = XDocument.Parse(this.GetInstance().XmlDoc);
+            var root_element = doc.Root;            
+            CreateHandlerForRootNode(root_element);
+            var nodes = doc.Root.Elements().ToList();
+
+            double total_nodes = nodes.Count;
+            double node_index = 0;
+            double progress = 0;
+            foreach(var node in nodes)
+            {
+                if (this.GetInstance().IsAborting)
+                {
+                    break;
+                }
+                if (!CreateHandlerForNode(node)) { xmltv_logger.Verbose.Debug.WriteLine("Unable to create handler for node: '{0}'", node.Name.ToString()); }
+                node_index++;
+                progress = 100.0 * (node_index / total_nodes);
+                xmltv_logger.ReportProgress(this, new Enterprise.Logging.ReportProgressEventArgs((int)progress));
+                Application.DoEvents();
+            }
+        }
 
+
+        private void CreateHandlerForRootNode(XElement root)
+        {                        
+            if (root == null) { throw new NullReferenceException("Root element is null"); }
+            if (root.Name == null) { throw new NullReferenceException("Root element's Name is null"); }
+            var root_name =  root.Name.ToString();
+            xmltv_logger.Verbose.Debug.WriteLine("Creating handler for root: '{0}'", root_name.ToString());
+            object raw_instance = null;
+            BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
+            CultureInfo culture = CultureInfo.CurrentCulture;
+            Assembly asm = Assembly.GetExecutingAssembly();
+            var types = asm.GetTypes();
+            Type handler_type = null;
+            foreach (var type in types)
+            {
+                if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVRuntimeInstance>))
+                {                    
+                    var iface = type.GetInterface("IXMLTVHandler", true);
+                    if (iface != null)
+                    {
+                        var handler_prop = type.GetProperty("Handler");
+                        if (handler_prop != null)
+                        {
+                            var ctors = type.GetConstructors(flags);
+                            bool has_default_ctor = false;
+                            foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 0) { has_default_ctor = true; } }
+                            if (!has_default_ctor) { continue; }
+                            raw_instance = Activator.CreateInstance(type, flags, null, new object[0], culture);
+                            if (raw_instance != null)
+                            {
+                                object handler_value = handler_prop.GetValue(raw_instance, null);
+                                if (handler_value != null && handler_value.ToString() == root_name)
+                                {
+                                    handler_type = type;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            if (handler_type == null) 
+            {
+                StringBuilder node_builder = new StringBuilder();
+                node_builder.AppendFormat("<{0} ", root.Name);
+                if (root.HasAttributes) { foreach (var attribute in root.Attributes()) { node_builder.AppendFormat("{0}=\"{1}\" ", attribute.Name, attribute.Value); } }
+                string node_text = string.Format("{0}>", node_builder.ToString().TrimEnd(new char[] { ' ' }));
+                throw new Exception(string.Format("Unable to find a compatible handler to parse node: {0}", node_text)); 
+            }
+            xmltv_logger.Verbose.Debug.WriteLine("Created handler for root: '{0}'", root_name.ToString());
+            raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] { gInstance }, culture);
         }
 
-        public void Dispose()
+        private bool CreateHandlerForNode(XElement node)
         {
-            //throw new NotImplementedException();
-        }
+            if (node == null) { throw new NullReferenceException("Node element is null"); }
+            if (node.Name == null) { throw new NullReferenceException("Node element's Name is null"); }
+            var node_name = node.Name.ToString();
 
+            xmltv_logger.Verbose.Debug.WriteLine("Creating handler for node: '{0}'", node_name.ToString());
+            object raw_instance = null;
+            BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
+            CultureInfo culture = CultureInfo.CurrentCulture;
+            Assembly asm = Assembly.GetExecutingAssembly();
+            var types = asm.GetTypes();
+            Type handler_type = null;
+            foreach (var type in types)
+            {
+                if (type.BaseType != null && type.BaseType == typeof(XMLTVBase<XMLTVRuntimeInstance>))
+                {
+                    var iface = type.GetInterface("IXMLTVHandler", true);
+                    if (iface != null)
+                    {
+                        var handler_prop = type.GetProperty("Handler");
+                        if (handler_prop != null)
+                        {
+                            var ctors = type.GetConstructors(flags);
+                            bool has_default_ctor = false;
+                            foreach (var ctor in ctors) { if (ctor.GetParameters().Count() == 0) { has_default_ctor = true; } }
+                            if (!has_default_ctor) { continue; }
+                            raw_instance = Activator.CreateInstance(type, flags, null, new object[0], culture);
+                            if (raw_instance != null)
+                            {
+                                object handler_value = handler_prop.GetValue(raw_instance, null);
+                                if (handler_value != null && handler_value.ToString() == node_name)
+                                {
+                                    handler_type = type;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            if (handler_type == null) 
+            {
+                StringBuilder node_builder = new StringBuilder();
+                node_builder.AppendFormat("<{0} ", node.Name);
+                if (node.HasAttributes) { foreach (var attribute in node.Attributes()) { node_builder.AppendFormat("{0}=\"{1}\" ", attribute.Name, attribute.Value); } }
+                string node_text = string.Format("{0}>", node_builder.ToString().TrimEnd(new char[] { ' ' }));
+                throw new Exception(string.Format("Unable to find a compatible handler to parse node: {0}", node_text)); 
+            }
+            xmltv_logger.Verbose.Debug.WriteLine("Created handler for node: '{0}'", node_name.ToString());
+            raw_instance = Activator.CreateInstance(handler_type, flags, null, new object[] { gInstance, node }, culture);
+            return true;
+        }
         
     }
 }

 

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