private static BinaryReader Decompress(byte[] buffer, int expectedSize = 0)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
var output = new MemoryStream(expectedSize);
try
{
using (var inflater = new Inflater())
{
inflater.DataAvailable += output.Write;
inflater.Add(buffer, 0, buffer.Length);
}
output.Position = 0;
return(new BinaryReader(output));
}
catch
{
output.Dispose();
throw;
}
}
public void Inflate_Expand()
{
uncompressedData.Clear();
using (Inflater inf = new Inflater())
{
inf.DataAvailable += new DataAvailableHandler(DDataAvail);
inf.Add((byte[])compressedData.ToArray(typeof(byte)));
inf.Finish();
adler2 = inf.Checksum;
}
Assert.AreEqual(adler1, adler2);
}
/// <summary>
/// Decompress a stream with ZLib
/// </summary>
/// <param name="compressLevel">Compression level of stream</param>
/// <param name="expectedSize">Expected size</param>
public static void Decompress(out CompressLevel compressLevel, int expectedSize = 0)
{
uint numBytesAddressing = ZLibWrapper.InputBufferLength;
compressLevel = CompressLevel.None;
try
{
ZLibWrapper.Position(0, ZLibBufferType.InputBuffer);
compressLevel = RetrieveCompressionLevel();
ZLibWrapper.Position(0, ZLibBufferType.InputBuffer);
if (expectedSize == 0)
{
// no decompression. copy input buffer in output buffer
ZLibWrapper.CopyInputBufferToOutputBuffer(8);
compressLevel = CompressLevel.None; // for compression
}
else
{
if (_inflater == null)
{
_inflater = new Inflater();
_inflater.DataAvailable += ZLibWrapper.WriteInOutputBuffer;
}
while (numBytesAddressing > 0u)
{
uint numBytes = Math.Min(numBytesAddressing, 8192u); //8192u); 65536u
_inflater.Add(ZLibWrapper.ReadBytes((int)numBytes, ZLibBufferType.InputBuffer));
numBytesAddressing -= numBytes;
}
string inflateErrorMsg = _inflater._ztream.msg;
if (!string.IsNullOrWhiteSpace(inflateErrorMsg))
{
MessageBox.Show(string.Format("ZLib.Decompress: {0}", inflateErrorMsg),
TranslateUI.TranslateUiGlobalization.ResManager.GetString("ZLib_Error"),
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
_inflater.Finish(); //flush zlib buffer
}
ZLibWrapper.Position(0, ZLibBufferType.OutputBuffer);
}
catch (Exception ex)
{
MessageBox.Show(
string.Format(TranslateUI.TranslateUiGlobalization.ResManager.GetString(name: "MSG_ErrorWithNewLine"), ex),
TranslateUI.TranslateUiGlobalization.ResManager.GetString(name: "ZLib_Decompress"),
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
if (ZLibWrapper.OutputBufferLength == 0)
{
MessageBox.Show(
TranslateUI.TranslateUiGlobalization.ResManager.GetString(name: "ZLib_OutputBufferEmpty"),
TranslateUI.TranslateUiGlobalization.ResManager.GetString(name: "ZLib_Decompress"),
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
