reactos/irc/TechBot/CHMLibrary/CHMDecoding/UrlTableEntry.cs
Casper Hornstrup 9dab4509fa Import TechBot
svn path=/trunk/; revision=13064
2005-01-15 19:27:25 +00:00

176 lines
4.3 KiB
C#

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;
}
}
}
}