Mercurial > hg > CbC > CbC_gcc

annotate zlib/contrib/dotzlib/DotZLib/CodecBase.cs @ 51:ae3a4bfb450b

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add some files of version 4.4.3 that have been forgotten.
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Sun, 07 Feb 2010 18:27:48 +0900
parents
children 04ced10e8804
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51
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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1 //
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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2 // © Copyright Henrik Ravn 2004
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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3 //
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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4 // Use, modification and distribution are subject to the Boost Software License, Version 1.0.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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5 // (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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6 //
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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7
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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8 using System;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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9 using System.Runtime.InteropServices;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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10
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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11 namespace DotZLib
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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12 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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13 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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14 /// Implements the common functionality needed for all <see cref="Codec"/>s
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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15 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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16 public abstract class CodecBase : Codec, IDisposable
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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17 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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18
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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19 #region Data members
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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20
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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21 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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22 /// Instance of the internal zlib buffer structure that is
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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23 /// passed to all functions in the zlib dll
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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24 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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25 internal ZStream _ztream = new ZStream();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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26
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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27 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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28 /// True if the object instance has been disposed, false otherwise
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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29 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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30 protected bool _isDisposed = false;
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31
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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32 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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33 /// The size of the internal buffers
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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34 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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35 protected const int kBufferSize = 16384;
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36
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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37 private byte[] _outBuffer = new byte[kBufferSize];
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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38 private byte[] _inBuffer = new byte[kBufferSize];
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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39
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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40 private GCHandle _hInput;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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41 private GCHandle _hOutput;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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42
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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43 private uint _checksum = 0;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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44
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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45 #endregion
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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46
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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47 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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48 /// Initializes a new instance of the <c>CodeBase</c> class.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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49 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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50 public CodecBase()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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51 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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52 try
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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53 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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54 _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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55 _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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56 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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57 catch (Exception)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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58 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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59 CleanUp(false);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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60 throw;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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61 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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62 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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63
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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64
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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65 #region Codec Members
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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66
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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67 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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68 /// Occurs when more processed data are available.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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69 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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70 public event DataAvailableHandler DataAvailable;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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71
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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72 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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73 /// Fires the <see cref="DataAvailable"/> event
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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74 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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75 protected void OnDataAvailable()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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76 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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77 if (_ztream.total_out > 0)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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78 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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79 if (DataAvailable != null)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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80 DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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81 resetOutput();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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82 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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83 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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84
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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85 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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86 /// Adds more data to the codec to be processed.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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87 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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88 /// <param name="data">Byte array containing the data to be added to the codec</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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89 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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90 public void Add(byte[] data)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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91 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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92 Add(data,0,data.Length);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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93 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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94
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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95 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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96 /// Adds more data to the codec to be processed.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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97 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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98 /// <param name="data">Byte array containing the data to be added to the codec</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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99 /// <param name="offset">The index of the first byte to add from <c>data</c></param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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100 /// <param name="count">The number of bytes to add</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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101 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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102 /// <remarks>This must be implemented by a derived class</remarks>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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103 public abstract void Add(byte[] data, int offset, int count);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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104
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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105 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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106 /// Finishes up any pending data that needs to be processed and handled.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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107 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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108 /// <remarks>This must be implemented by a derived class</remarks>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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109 public abstract void Finish();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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110
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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111 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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112 /// Gets the checksum of the data that has been added so far
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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113 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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114 public uint Checksum { get { return _checksum; } }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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115
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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116 #endregion
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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117
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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118 #region Destructor & IDisposable stuff
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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119
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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120 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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121 /// Destroys this instance
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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122 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
123 ~CodecBase()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
124 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 CleanUp(false);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
126 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
127
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
128 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
130 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 public void Dispose()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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132 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 CleanUp(true);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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134 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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135
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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137 /// Performs any codec specific cleanup
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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138 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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139 /// <remarks>This must be implemented by a derived class</remarks>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 protected abstract void CleanUp();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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141
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 // performs the release of the handles and calls the dereived CleanUp()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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143 private void CleanUp(bool isDisposing)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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144 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 if (!_isDisposed)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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146 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 CleanUp();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 if (_hInput.IsAllocated)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 _hInput.Free();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 if (_hOutput.IsAllocated)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 _hOutput.Free();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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152
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 _isDisposed = true;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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154 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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155 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
156
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
157
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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158 #endregion
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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159
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 #region Helper methods
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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161
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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162 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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163 /// Copies a number of bytes to the internal codec buffer - ready for proccesing
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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164 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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165 /// <param name="data">The byte array that contains the data to copy</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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166 /// <param name="startIndex">The index of the first byte to copy</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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167 /// <param name="count">The number of bytes to copy from <c>data</c></param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 protected void copyInput(byte[] data, int startIndex, int count)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 Array.Copy(data, startIndex, _inBuffer,0, count);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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171 _ztream.next_in = _hInput.AddrOfPinnedObject();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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172 _ztream.total_in = 0;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 _ztream.avail_in = (uint)count;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
174
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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175 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
176
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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177 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 /// Resets the internal output buffers to a known state - ready for processing
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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179 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 protected void resetOutput()
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 _ztream.total_out = 0;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 _ztream.avail_out = kBufferSize;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 _ztream.next_out = _hOutput.AddrOfPinnedObject();
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
186
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 /// <summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 /// Updates the running checksum property
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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189 /// </summary>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 /// <param name="newSum">The new checksum value</param>
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 protected void setChecksum(uint newSum)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 _checksum = newSum;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 #endregion
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
196
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 }