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author | nijtmans <nijtmans> | 2010-03-16 09:01:02 (GMT) |
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committer | nijtmans <nijtmans> | 2010-03-16 09:01:02 (GMT) |
commit | d8aa6f53b956aac50cc8abbee8efde417120f022 (patch) | |
tree | ad38e8daca52c2a4a161ed744d7579720ced7cb8 /compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs | |
parent | 6b64f45b9a293ab9cd7c97afa0399c6c37bd4a00 (diff) | |
download | tcl-d8aa6f53b956aac50cc8abbee8efde417120f022.zip tcl-d8aa6f53b956aac50cc8abbee8efde417120f022.tar.gz tcl-d8aa6f53b956aac50cc8abbee8efde417120f022.tar.bz2 |
Upgrade zlib to version 1.2.4
Diffstat (limited to 'compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs')
-rw-r--r-- | compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs | 396 |
1 files changed, 198 insertions, 198 deletions
diff --git a/compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs b/compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs index 954db7d..b0eb78a 100644 --- a/compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs +++ b/compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs @@ -1,198 +1,198 @@ -//
-// © Copyright Henrik Ravn 2004
-//
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-using System;
-using System.Runtime.InteropServices;
-
-namespace DotZLib
-{
- /// <summary>
- /// Implements the common functionality needed for all <see cref="Codec"/>s
- /// </summary>
- public abstract class CodecBase : Codec, IDisposable
- {
-
- #region Data members
-
- /// <summary>
- /// Instance of the internal zlib buffer structure that is
- /// passed to all functions in the zlib dll
- /// </summary>
- internal ZStream _ztream = new ZStream();
-
- /// <summary>
- /// True if the object instance has been disposed, false otherwise
- /// </summary>
- protected bool _isDisposed = false;
-
- /// <summary>
- /// The size of the internal buffers
- /// </summary>
- protected const int kBufferSize = 16384;
-
- private byte[] _outBuffer = new byte[kBufferSize];
- private byte[] _inBuffer = new byte[kBufferSize];
-
- private GCHandle _hInput;
- private GCHandle _hOutput;
-
- private uint _checksum = 0;
-
- #endregion
-
- /// <summary>
- /// Initializes a new instance of the <c>CodeBase</c> class.
- /// </summary>
- public CodecBase()
- {
- try
- {
- _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
- _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
- }
- catch (Exception)
- {
- CleanUp(false);
- throw;
- }
- }
-
-
- #region Codec Members
-
- /// <summary>
- /// Occurs when more processed data are available.
- /// </summary>
- public event DataAvailableHandler DataAvailable;
-
- /// <summary>
- /// Fires the <see cref="DataAvailable"/> event
- /// </summary>
- protected void OnDataAvailable()
- {
- if (_ztream.total_out > 0)
- {
- if (DataAvailable != null)
- DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
- resetOutput();
- }
- }
-
- /// <summary>
- /// Adds more data to the codec to be processed.
- /// </summary>
- /// <param name="data">Byte array containing the data to be added to the codec</param>
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
- public void Add(byte[] data)
- {
- Add(data,0,data.Length);
- }
-
- /// <summary>
- /// Adds more data to the codec to be processed.
- /// </summary>
- /// <param name="data">Byte array containing the data to be added to the codec</param>
- /// <param name="offset">The index of the first byte to add from <c>data</c></param>
- /// <param name="count">The number of bytes to add</param>
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
- /// <remarks>This must be implemented by a derived class</remarks>
- public abstract void Add(byte[] data, int offset, int count);
-
- /// <summary>
- /// Finishes up any pending data that needs to be processed and handled.
- /// </summary>
- /// <remarks>This must be implemented by a derived class</remarks>
- public abstract void Finish();
-
- /// <summary>
- /// Gets the checksum of the data that has been added so far
- /// </summary>
- public uint Checksum { get { return _checksum; } }
-
- #endregion
-
- #region Destructor & IDisposable stuff
-
- /// <summary>
- /// Destroys this instance
- /// </summary>
- ~CodecBase()
- {
- CleanUp(false);
- }
-
- /// <summary>
- /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
- /// </summary>
- public void Dispose()
- {
- CleanUp(true);
- }
-
- /// <summary>
- /// Performs any codec specific cleanup
- /// </summary>
- /// <remarks>This must be implemented by a derived class</remarks>
- protected abstract void CleanUp();
-
- // performs the release of the handles and calls the dereived CleanUp()
- private void CleanUp(bool isDisposing)
- {
- if (!_isDisposed)
- {
- CleanUp();
- if (_hInput.IsAllocated)
- _hInput.Free();
- if (_hOutput.IsAllocated)
- _hOutput.Free();
-
- _isDisposed = true;
- }
- }
-
-
- #endregion
-
- #region Helper methods
-
- /// <summary>
- /// Copies a number of bytes to the internal codec buffer - ready for proccesing
- /// </summary>
- /// <param name="data">The byte array that contains the data to copy</param>
- /// <param name="startIndex">The index of the first byte to copy</param>
- /// <param name="count">The number of bytes to copy from <c>data</c></param>
- protected void copyInput(byte[] data, int startIndex, int count)
- {
- Array.Copy(data, startIndex, _inBuffer,0, count);
- _ztream.next_in = _hInput.AddrOfPinnedObject();
- _ztream.total_in = 0;
- _ztream.avail_in = (uint)count;
-
- }
-
- /// <summary>
- /// Resets the internal output buffers to a known state - ready for processing
- /// </summary>
- protected void resetOutput()
- {
- _ztream.total_out = 0;
- _ztream.avail_out = kBufferSize;
- _ztream.next_out = _hOutput.AddrOfPinnedObject();
- }
-
- /// <summary>
- /// Updates the running checksum property
- /// </summary>
- /// <param name="newSum">The new checksum value</param>
- protected void setChecksum(uint newSum)
- {
- _checksum = newSum;
- }
- #endregion
-
- }
-}
+// +// © Copyright Henrik Ravn 2004 +// +// Use, modification and distribution are subject to the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +using System; +using System.Runtime.InteropServices; + +namespace DotZLib +{ + /// <summary> + /// Implements the common functionality needed for all <see cref="Codec"/>s + /// </summary> + public abstract class CodecBase : Codec, IDisposable + { + + #region Data members + + /// <summary> + /// Instance of the internal zlib buffer structure that is + /// passed to all functions in the zlib dll + /// </summary> + internal ZStream _ztream = new ZStream(); + + /// <summary> + /// True if the object instance has been disposed, false otherwise + /// </summary> + protected bool _isDisposed = false; + + /// <summary> + /// The size of the internal buffers + /// </summary> + protected const int kBufferSize = 16384; + + private byte[] _outBuffer = new byte[kBufferSize]; + private byte[] _inBuffer = new byte[kBufferSize]; + + private GCHandle _hInput; + private GCHandle _hOutput; + + private uint _checksum = 0; + + #endregion + + /// <summary> + /// Initializes a new instance of the <c>CodeBase</c> class. + /// </summary> + public CodecBase() + { + try + { + _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned); + _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned); + } + catch (Exception) + { + CleanUp(false); + throw; + } + } + + + #region Codec Members + + /// <summary> + /// Occurs when more processed data are available. + /// </summary> + public event DataAvailableHandler DataAvailable; + + /// <summary> + /// Fires the <see cref="DataAvailable"/> event + /// </summary> + protected void OnDataAvailable() + { + if (_ztream.total_out > 0) + { + if (DataAvailable != null) + DataAvailable( _outBuffer, 0, (int)_ztream.total_out); + resetOutput(); + } + } + + /// <summary> + /// Adds more data to the codec to be processed. + /// </summary> + /// <param name="data">Byte array containing the data to be added to the codec</param> + /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks> + public void Add(byte[] data) + { + Add(data,0,data.Length); + } + + /// <summary> + /// Adds more data to the codec to be processed. + /// </summary> + /// <param name="data">Byte array containing the data to be added to the codec</param> + /// <param name="offset">The index of the first byte to add from <c>data</c></param> + /// <param name="count">The number of bytes to add</param> + /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks> + /// <remarks>This must be implemented by a derived class</remarks> + public abstract void Add(byte[] data, int offset, int count); + + /// <summary> + /// Finishes up any pending data that needs to be processed and handled. + /// </summary> + /// <remarks>This must be implemented by a derived class</remarks> + public abstract void Finish(); + + /// <summary> + /// Gets the checksum of the data that has been added so far + /// </summary> + public uint Checksum { get { return _checksum; } } + + #endregion + + #region Destructor & IDisposable stuff + + /// <summary> + /// Destroys this instance + /// </summary> + ~CodecBase() + { + CleanUp(false); + } + + /// <summary> + /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class + /// </summary> + public void Dispose() + { + CleanUp(true); + } + + /// <summary> + /// Performs any codec specific cleanup + /// </summary> + /// <remarks>This must be implemented by a derived class</remarks> + protected abstract void CleanUp(); + + // performs the release of the handles and calls the dereived CleanUp() + private void CleanUp(bool isDisposing) + { + if (!_isDisposed) + { + CleanUp(); + if (_hInput.IsAllocated) + _hInput.Free(); + if (_hOutput.IsAllocated) + _hOutput.Free(); + + _isDisposed = true; + } + } + + + #endregion + + #region Helper methods + + /// <summary> + /// Copies a number of bytes to the internal codec buffer - ready for proccesing + /// </summary> + /// <param name="data">The byte array that contains the data to copy</param> + /// <param name="startIndex">The index of the first byte to copy</param> + /// <param name="count">The number of bytes to copy from <c>data</c></param> + protected void copyInput(byte[] data, int startIndex, int count) + { + Array.Copy(data, startIndex, _inBuffer,0, count); + _ztream.next_in = _hInput.AddrOfPinnedObject(); + _ztream.total_in = 0; + _ztream.avail_in = (uint)count; + + } + + /// <summary> + /// Resets the internal output buffers to a known state - ready for processing + /// </summary> + protected void resetOutput() + { + _ztream.total_out = 0; + _ztream.avail_out = kBufferSize; + _ztream.next_out = _hOutput.AddrOfPinnedObject(); + } + + /// <summary> + /// Updates the running checksum property + /// </summary> + /// <param name="newSum">The new checksum value</param> + protected void setChecksum(uint newSum) + { + _checksum = newSum; + } + #endregion + + } +} |