diff options
Diffstat (limited to 'protocols/Telegram/tgl/zlib/contrib/dotzlib/DotZLib/Deflater.cs')
-rw-r--r-- | protocols/Telegram/tgl/zlib/contrib/dotzlib/DotZLib/Deflater.cs | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/protocols/Telegram/tgl/zlib/contrib/dotzlib/DotZLib/Deflater.cs b/protocols/Telegram/tgl/zlib/contrib/dotzlib/DotZLib/Deflater.cs deleted file mode 100644 index c2477925b6..0000000000 --- a/protocols/Telegram/tgl/zlib/contrib/dotzlib/DotZLib/Deflater.cs +++ /dev/null @@ -1,106 +0,0 @@ -//
-// © 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.Diagnostics;
-using System.Runtime.InteropServices;
-
-namespace DotZLib
-{
-
- /// <summary>
- /// Implements a data compressor, using the deflate algorithm in the ZLib dll
- /// </summary>
- public sealed class Deflater : CodecBase
- {
- #region Dll imports
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
- private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
-
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
- private static extern int deflate(ref ZStream sz, int flush);
-
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
- private static extern int deflateReset(ref ZStream sz);
-
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
- private static extern int deflateEnd(ref ZStream sz);
- #endregion
-
- /// <summary>
- /// Constructs an new instance of the <c>Deflater</c>
- /// </summary>
- /// <param name="level">The compression level to use for this <c>Deflater</c></param>
- public Deflater(CompressLevel level) : base()
- {
- int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
- if (retval != 0)
- throw new ZLibException(retval, "Could not initialize deflater");
-
- 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>
- /// <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>
- public override void Add(byte[] data, int offset, int count)
- {
- if (data == null) throw new ArgumentNullException();
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
- if ((offset+count) > data.Length) throw new ArgumentException();
-
- int total = count;
- int inputIndex = offset;
- int err = 0;
-
- while (err >= 0 && inputIndex < total)
- {
- copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
- while (err >= 0 && _ztream.avail_in > 0)
- {
- err = deflate(ref _ztream, (int)FlushTypes.None);
- if (err == 0)
- while (_ztream.avail_out == 0)
- {
- OnDataAvailable();
- err = deflate(ref _ztream, (int)FlushTypes.None);
- }
- inputIndex += (int)_ztream.total_in;
- }
- }
- setChecksum( _ztream.adler );
- }
-
-
- /// <summary>
- /// Finishes up any pending data that needs to be processed and handled.
- /// </summary>
- public override void Finish()
- {
- int err;
- do
- {
- err = deflate(ref _ztream, (int)FlushTypes.Finish);
- OnDataAvailable();
- }
- while (err == 0);
- setChecksum( _ztream.adler );
- deflateReset(ref _ztream);
- resetOutput();
- }
-
- /// <summary>
- /// Closes the internal zlib deflate stream
- /// </summary>
- protected override void CleanUp() { deflateEnd(ref _ztream); }
-
- }
-}
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