reactos/irc/TechBot/CHMLibrary/IndexTopic.cs

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5 KiB
C#
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using System;
using System.IO;
using HtmlHelp.ChmDecoding;
namespace HtmlHelp
{
/// <summary>
/// The class <c>IndexTopic</c> implements an entry for the <see cref="IndexItem">IndexItem</see> topics list.
/// </summary>
public sealed class IndexTopic
{
private DataMode _topicMode = DataMode.TextBased;
private string _title="";
private string _local="";
private string _compileFile = "";
private string _chmPath = "";
private int _topicOffset = -1;
private CHMFile _associatedFile = null;
/// <summary>
/// Creates a new instance of the class based on an existing TopicEntry
/// </summary>
/// <param name="entry"></param>
internal static IndexTopic FromTopicEntry(TopicEntry entry)
{
return new IndexTopic(entry.EntryOffset, entry.ChmFile);
//return new IndexTopic( entry.Title, entry.Locale, entry.ChmFile.CompileFile, entry.ChmFile.ChmFilePath);
}
/// <summary>
/// Creates a new instance of the class (binary extraction mode)
/// </summary>
/// <param name="topicOffset">offset of the topic entry</param>
/// <param name="associatedFile">associated CHMFile instance</param>
internal IndexTopic(int topicOffset, CHMFile associatedFile)
{
_topicMode = DataMode.Binary;
_topicOffset = topicOffset;
_associatedFile = associatedFile;
}
/// <summary>
/// Constructor of the class
/// </summary>
/// <param name="Title">topic title</param>
/// <param name="local">topic local (content filename)</param>
/// <param name="compilefile">name of the chm file (location of topic)</param>
/// <param name="chmpath">path of the chm file</param>
public IndexTopic(string Title, string local, string compilefile, string chmpath)
{
_topicMode = DataMode.TextBased;
_title = Title;
_local = local;
_compileFile = compilefile;
_chmPath = chmpath;
}
#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((int)_topicMode);
if(_topicMode==DataMode.TextBased)
{
writer.Write(_title);
writer.Write(_local);
}
else
{
writer.Write(_topicOffset);
}
}
/// <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)
{
_topicMode = (DataMode)reader.ReadInt32();
if(_topicMode==DataMode.TextBased)
{
_title = reader.ReadString();
_local = reader.ReadString();
}
else
{
_topicOffset = reader.ReadInt32();
}
}
#endregion
/// <summary>
/// Internally used to set the chm-finos when reading from dump store
/// </summary>
/// <param name="compilefile"></param>
/// <param name="chmpath"></param>
internal void SetChmInfo(string compilefile, string chmpath)
{
_compileFile = compilefile;
_chmPath = chmpath;
}
/// <summary>
/// Gets/Sets the associated CHMFile instance
/// </summary>
internal CHMFile AssociatedFile
{
get { return _associatedFile; }
set { _associatedFile = value; }
}
/// <summary>
/// Gets the topic title
/// </summary>
public string Title
{
get
{
if((_topicMode == DataMode.Binary )&&(_associatedFile!=null))
{
if( _topicOffset >= 0)
{
TopicEntry te = (TopicEntry) (_associatedFile.TopicsFile[_topicOffset]);
if(te != null)
{
return te.Title;
}
}
}
return _title;
}
}
/// <summary>
/// Gets the local (content filename)
/// </summary>
public string Local
{
get
{
if((_topicMode == DataMode.Binary )&&(_associatedFile!=null))
{
if( _topicOffset >= 0)
{
TopicEntry te = (TopicEntry) (_associatedFile.TopicsFile[_topicOffset]);
if(te != null)
{
return te.Locale;
}
}
}
return _local;
}
}
/// <summary>
/// Gets the compile file (location)
/// </summary>
public string CompileFile
{
get
{
if(_associatedFile != null)
return _associatedFile.CompileFile;
return _compileFile;
}
}
/// <summary>
/// Gets the chm file path
/// </summary>
public string ChmFilePath
{
get
{
if(_associatedFile != null)
return _associatedFile.ChmFilePath;
return _chmPath;
}
}
/// <summary>
/// Gets the url
/// </summary>
public string URL
{
get
{
string sL = Local;
if(sL.Length<=0)
return "";//"about:blank";
if( (sL.ToLower().IndexOf("http://") >= 0) ||
(sL.ToLower().IndexOf("https://") >= 0) ||
(sL.ToLower().IndexOf("mailto:") >= 0) ||
(sL.ToLower().IndexOf("ftp://") >= 0) ||
(sL.ToLower().IndexOf("ms-its:") >= 0))
return sL;
return HtmlHelpSystem.UrlPrefix + ChmFilePath + "::/" + sL;
}
}
}
}