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-rw-r--r--compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs396
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 b0eb78a..42e6da3 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
+
+ }
+}
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