mirror of
https://github.com/reactos/reactos.git
synced 2024-12-27 09:34:43 +00:00
395 lines
11 KiB
C#
395 lines
11 KiB
C#
using System;
|
|
using System.IO;
|
|
using System.Text;
|
|
using System.Diagnostics;
|
|
using System.Collections.Specialized;
|
|
|
|
using ICSharpCode.SharpZipLib;
|
|
using ICSharpCode.SharpZipLib.Zip;
|
|
using ICSharpCode.SharpZipLib.Zip.Compression;
|
|
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
|
|
|
|
using HtmlHelp;
|
|
// using HtmlHelp.Storage;
|
|
|
|
namespace HtmlHelp.ChmDecoding
|
|
{
|
|
/// <summary>
|
|
/// Enumeration for specifying the dumping compression
|
|
/// </summary>
|
|
public enum DumpCompression
|
|
{
|
|
/// <summary>
|
|
/// None - no data compression will be used.
|
|
/// Fastest but most memory intensive
|
|
/// </summary>
|
|
None = 0,
|
|
/// <summary>
|
|
/// Minimum - a minimum data compression will be used.
|
|
/// Fast but not much data reduction
|
|
/// </summary>
|
|
Minimum = 1,
|
|
/// <summary>
|
|
/// Medium - a medium data compression will be used.
|
|
/// Slower but medium data reduction
|
|
/// </summary>
|
|
Medium = 2,
|
|
/// <summary>
|
|
/// Maximum - a maximum data compression will be used.
|
|
/// Slowest but maximum data reduction
|
|
/// </summary>
|
|
Maximum = 3
|
|
}
|
|
|
|
/// <summary>
|
|
/// Flags which specify which data should be dumped
|
|
/// </summary>
|
|
[FlagsAttribute()]
|
|
public enum DumpingFlags
|
|
{
|
|
/// <summary>
|
|
/// DumpTextTOC - if this flag is set, text-based TOCs (sitemap format) will be dumped
|
|
/// </summary>
|
|
DumpTextTOC = 1,
|
|
/// <summary>
|
|
/// DumpBinaryTOC - if this flag is set, binary TOCs will be dumped
|
|
/// </summary>
|
|
DumpBinaryTOC = 2,
|
|
/// <summary>
|
|
/// DumpTextIndex - if this flag is set, the text-based index (sitemap format) will be dumped
|
|
/// </summary>
|
|
DumpTextIndex = 4,
|
|
/// <summary>
|
|
/// DumpBinaryIndex - if this flag is set, the binary index will be dumped
|
|
/// </summary>
|
|
DumpBinaryIndex = 8,
|
|
/// <summary>
|
|
/// DumpStrings - if this flag is set, the internal #STRINGS file will be dumped
|
|
/// </summary>
|
|
DumpStrings = 16,
|
|
/// <summary>
|
|
/// DumpUrlStr - if this flag is set, the internal #URLSTR file will be dumped
|
|
/// </summary>
|
|
DumpUrlStr = 32,
|
|
/// <summary>
|
|
/// DumpUrlTbl - if this flag is set, the internal #URLTBL file will be dumped
|
|
/// </summary>
|
|
DumpUrlTbl = 64,
|
|
/// <summary>
|
|
/// DumpTopics - if this flag is set, the internal #TOPICS file will be dumped
|
|
/// </summary>
|
|
DumpTopics = 128,
|
|
/// <summary>
|
|
/// DumpFullText - if this flag is set, the internal $FIftiMain file will be dumped
|
|
/// </summary>
|
|
DumpFullText = 256
|
|
}
|
|
|
|
/// <summary>
|
|
/// The class <c>DumpingInfo</c> implements information properties for the CHMFile class
|
|
/// if and how data dumping should be used.
|
|
/// </summary>
|
|
public sealed class DumpingInfo
|
|
{
|
|
public bool m_bAllowSaveDump=true;
|
|
|
|
private readonly static BitVector32.Section DumpFlags = BitVector32.CreateSection(512);
|
|
|
|
private const string _dumpHeader = "HtmlHelpSystem dump file 1.0";
|
|
|
|
private string _outputDir = ""; // emtpy string means, same directory as chm file
|
|
private DumpCompression _compressionLevel = DumpCompression.Maximum;
|
|
private CHMFile _chmFile = null;
|
|
|
|
private DeflaterOutputStream _outputStream = null;
|
|
private InflaterInputStream _inputStream = null;
|
|
|
|
private BinaryWriter _writer = null;
|
|
private BinaryReader _reader = null;
|
|
|
|
private BitVector32 _flags;
|
|
|
|
/// <summary>
|
|
/// Constructor of the class
|
|
/// </summary>
|
|
/// <param name="flags">Combine flag values to specify which data should be dumped.</param>
|
|
/// <param name="outputDir">output directory. emtpy string means,
|
|
/// same directory as chm file (only if destination = ExternalFile)</param>
|
|
/// <param name="compressionLevel">compression which should be used</param>
|
|
public DumpingInfo(DumpingFlags flags, string outputDir, DumpCompression compressionLevel)
|
|
{
|
|
_flags = new BitVector32(0);
|
|
int i = _flags[DumpFlags];
|
|
_flags[DumpFlags] = i | (int)flags;
|
|
|
|
_outputDir = outputDir;
|
|
_compressionLevel = compressionLevel;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if text-based TOCs will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpTextTOC
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpTextTOC) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if binary TOCs will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpBinaryTOC
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpBinaryTOC) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the text-based index will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpTextIndex
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpTextIndex) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the binary index will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpBinaryIndex
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpBinaryIndex) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the #STRINGS file will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpStrings
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpStrings) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the #URLSTR file will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpUrlStr
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpUrlStr) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the #URLTBL file will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpUrlTbl
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpUrlTbl) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the #TOPICS file will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpTopics
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpTopics) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the flag if the $FIftiMain file will be written to the dumping file
|
|
/// </summary>
|
|
public bool DumpFullText
|
|
{
|
|
get { return ((_flags[DumpFlags] & (int)DumpingFlags.DumpFullText) != 0); }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the dump output directory.
|
|
/// </summary>
|
|
/// <value>emtpy string means, same directory as chm file</value>
|
|
/// <remarks>If Destination is set to DumpingOutput.InternalFile this property will be ignored</remarks>
|
|
public string OutputDir
|
|
{
|
|
get { return _outputDir; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// The compression level used.
|
|
/// </summary>
|
|
public DumpCompression CompressionLevel
|
|
{
|
|
get { return _compressionLevel; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets/Sets the CHMFile instance associated with this object
|
|
/// </summary>
|
|
internal CHMFile ChmFile
|
|
{
|
|
get { return _chmFile; }
|
|
set { _chmFile = value; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Translates the compression level to the deflater constants
|
|
/// </summary>
|
|
private int CompLvl
|
|
{
|
|
get
|
|
{
|
|
switch(CompressionLevel)
|
|
{
|
|
case DumpCompression.None: return Deflater.NO_COMPRESSION;
|
|
case DumpCompression.Minimum: return Deflater.BEST_SPEED;
|
|
case DumpCompression.Medium: return Deflater.DEFAULT_COMPRESSION;
|
|
case DumpCompression.Maximum: return Deflater.BEST_COMPRESSION;
|
|
}
|
|
|
|
return Deflater.BEST_COMPRESSION;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if a dump exists
|
|
/// </summary>
|
|
internal bool DumpExists
|
|
{
|
|
get
|
|
{
|
|
if(_flags[DumpFlags] == 0)
|
|
return false;
|
|
|
|
// we have a reader or writer to the dump so it must exist
|
|
if( (_reader != null) || (_writer != null) )
|
|
return true;
|
|
|
|
string sDmpFile = _chmFile.ChmFilePath;
|
|
sDmpFile=sDmpFile.ToLower().Replace(".chm",".CHB");
|
|
|
|
return File.Exists(sDmpFile);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a binary writer instance which allows you to write to the dump
|
|
/// </summary>
|
|
internal BinaryWriter Writer
|
|
{
|
|
get
|
|
{
|
|
if (m_bAllowSaveDump==false)
|
|
return null;
|
|
|
|
if(_flags[DumpFlags] == 0)
|
|
throw new InvalidOperationException("Nothing to dump. No flags have been set !");
|
|
|
|
if(_reader != null)
|
|
throw new InvalidOperationException("Can't write and read at the same time !");
|
|
|
|
if(_chmFile == null)
|
|
throw new InvalidOperationException("Only usable with an associated CHMFile instance !");
|
|
|
|
if(_writer==null)
|
|
{
|
|
string sDmpFile = _chmFile.ChmFilePath;
|
|
sDmpFile=sDmpFile.ToLower().Replace(".chm",".CHB");
|
|
StreamWriter stream = new StreamWriter(sDmpFile, false, _chmFile.TextEncoding);
|
|
|
|
// write header info uncompressed
|
|
BinaryWriter _hwriter = new BinaryWriter(stream.BaseStream);
|
|
_hwriter.Write(_dumpHeader);
|
|
_hwriter.Write((int)CompressionLevel);
|
|
|
|
if(_compressionLevel == DumpCompression.None)
|
|
{
|
|
_writer = new BinaryWriter(stream.BaseStream);
|
|
}
|
|
else
|
|
{
|
|
_outputStream = new DeflaterOutputStream(stream.BaseStream, new Deflater(CompLvl));
|
|
|
|
_writer = new BinaryWriter(_outputStream);
|
|
}
|
|
}
|
|
|
|
return _writer;
|
|
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a binary reader which allows you to read from the dump
|
|
/// </summary>
|
|
internal BinaryReader Reader
|
|
{
|
|
get
|
|
{
|
|
if(_writer != null)
|
|
throw new InvalidOperationException("Can't write and read at the same time !");
|
|
|
|
if(_chmFile == null)
|
|
throw new InvalidOperationException("Only usable with an associated CHMFile instance !");
|
|
|
|
if(_reader==null)
|
|
{
|
|
string sDmpFile = _chmFile.ChmFilePath;
|
|
sDmpFile=sDmpFile.ToLower().Replace(".chm",".CHB");
|
|
StreamReader stream = new StreamReader(sDmpFile, _chmFile.TextEncoding);
|
|
|
|
BinaryReader _hReader = new BinaryReader(stream.BaseStream);
|
|
string sH = _hReader.ReadString();
|
|
|
|
if(sH != _dumpHeader)
|
|
{
|
|
_hReader.Close();
|
|
Debug.WriteLine("Unexpected dump-file header !");
|
|
throw new FormatException("DumpingInfo.Reader - Unexpected dump-file header !");
|
|
}
|
|
|
|
_compressionLevel = (DumpCompression)_hReader.ReadInt32();
|
|
// if(_compressionLevel != (DumpCompression)_hReader.ReadInt32())
|
|
// {
|
|
// _hReader.Close();
|
|
// return null;
|
|
// }
|
|
|
|
if(_compressionLevel == DumpCompression.None)
|
|
{
|
|
_reader = new BinaryReader(stream.BaseStream);
|
|
}
|
|
else
|
|
{
|
|
_inputStream = new InflaterInputStream(stream.BaseStream, new Inflater());
|
|
|
|
_reader = new BinaryReader(_inputStream);
|
|
}
|
|
}
|
|
|
|
return _reader;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Saves data and closes the dump
|
|
/// </summary>
|
|
/// <returns>true if succeed</returns>
|
|
internal bool SaveData()
|
|
{
|
|
if (m_bAllowSaveDump==false)
|
|
return true;
|
|
|
|
if(_writer != null)
|
|
{
|
|
if(_writer!=null)
|
|
_writer.Close();
|
|
_outputStream = null;
|
|
_writer = null;
|
|
}
|
|
|
|
if(_reader != null)
|
|
{
|
|
if(_reader!=null)
|
|
_reader.Close();
|
|
_inputStream = null;
|
|
_reader = null;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|