Import TechBot

svn path=/trunk/; revision=13064

irc/TechBot/CHMLibrary/CHMDecoding/UrlTableEntry.cs

@@ -0,0 +1,175 @@
+using System;
+using System.IO;
+
+namespace HtmlHelp.ChmDecoding
+{
+	/// <summary>
+	/// The class <c>UrlTableEntry</c> stores data for an URL-Table entry
+	/// </summary>
+	internal sealed class UrlTableEntry
+	{
+		/// <summary>
+		/// Internal member storing the offset of this entry
+		/// </summary>
+		private int _entryOffset = 0;
+		/// <summary>
+		/// Internal member storing a unique id
+		/// </summary>
+		private uint _uniqueID = 0;
+		/// <summary>
+		/// Internal member storing the topics index
+		/// </summary>
+		private int _topicsIndex = 0;
+		/// <summary>
+		/// Internal member storing the offset in the urlstr table
+		/// </summary>
+		private int _urlStrOffset = 0;
+		/// <summary>
+		/// Internal member storing the associated chmfile object
+		/// </summary>
+		private CHMFile _associatedFile = null;
+
+		/// <summary>
+		/// Constructor of the class
+		/// </summary>
+		/// <param name="uniqueID">unique id</param>
+		/// <param name="entryOffset">offset of the entry</param>
+		/// <param name="topicIndex">topic index</param>
+		/// <param name="urlstrOffset">urlstr offset for filename</param>
+		public UrlTableEntry(uint uniqueID, int entryOffset, int topicIndex, int urlstrOffset) : this(uniqueID, entryOffset, topicIndex, urlstrOffset, null)
+		{
+		}
+
+		/// <summary>
+		/// Constructor of the class
+		/// </summary>
+		/// <param name="uniqueID">unique id</param>
+		/// <param name="entryOffset">offset of the entry</param>
+		/// <param name="topicIndex">topic index</param>
+		/// <param name="urlstrOffset">urlstr offset for filename</param>
+		/// <param name="associatedFile">associated chm file</param>
+		internal UrlTableEntry(uint uniqueID, int entryOffset, int topicIndex, int urlstrOffset, CHMFile associatedFile)
+		{
+			_uniqueID = uniqueID;
+			_entryOffset = entryOffset;
+			_topicsIndex = topicIndex;
+			_urlStrOffset = urlstrOffset;
+			_associatedFile = associatedFile;
+		}
+
+		/// <summary>
+		/// Standard constructor
+		/// </summary>
+		internal UrlTableEntry()
+		{
+		}
+
+		#region Data dumping
+		/// <summary>
+		/// Dump the class data to a binary writer
+		/// </summary>
+		/// <param name="writer">writer to write the data</param>
+		internal void Dump(ref BinaryWriter writer)
+		{
+			writer.Write( _urlStrOffset );
+			writer.Write( _entryOffset );
+			writer.Write( _topicsIndex );
+			writer.Write( _urlStrOffset );
+		}
+
+		/// <summary>
+		/// Reads the object data from a dump store
+		/// </summary>
+		/// <param name="reader">reader to read the data</param>
+		internal void ReadDump(ref BinaryReader reader)
+		{
+			_urlStrOffset = reader.ReadInt32();
+			_entryOffset = reader.ReadInt32();
+			_topicsIndex = reader.ReadInt32();
+			_urlStrOffset = reader.ReadInt32();
+		}
+
+		/// <summary>
+		/// Sets the associated CHMFile instance
+		/// </summary>
+		/// <param name="associatedFile">instance to set</param>
+		internal void SetCHMFile(CHMFile associatedFile)
+		{
+			_associatedFile = associatedFile;
+		}
+		#endregion
+
+		/// <summary>
+		/// Gets the unique id of the entry
+		/// </summary>
+		internal uint UniqueID
+		{
+			get {return _uniqueID; }
+		}
+
+		/// <summary>
+		/// Gets the offset of the entry
+		/// </summary>
+		internal int EntryOffset
+		{
+			get {return _entryOffset; }
+		}
+
+		/// <summary>
+		/// Gets the topics index
+		/// </summary>
+		internal int TopicIndex
+		{
+			get {return _topicsIndex; }
+		}
+
+		/// <summary>
+		/// Gets the urlstr offset
+		/// </summary>
+		internal int UrlstrOffset
+		{
+			get { return _urlStrOffset; }
+		}
+		
+		/// <summary>
+		/// Gets the url of the entry
+		/// </summary>
+		public string URL
+		{
+			get
+			{
+				if(_associatedFile == null)
+					return String.Empty;
+
+				if(_associatedFile.UrlstrFile == null)
+					return String.Empty;
+
+				string sTemp = (string)_associatedFile.UrlstrFile.GetURLatOffset( _urlStrOffset );
+
+				if( sTemp == null)
+					return String.Empty;
+
+				return sTemp;
+			}
+		}
+
+		/// <summary>
+		/// Gets the associated topic for this url entry
+		/// </summary>
+		internal TopicEntry Topic
+		{
+			get
+			{
+				if(_associatedFile == null)
+					return null;
+
+				if(_associatedFile.TopicsFile == null)
+					return null;
+
+				TopicEntry tentry = _associatedFile.TopicsFile[ _topicsIndex*16 ];
+
+				return tentry;
+			}
+		}
+	}
+}