protected override void Dispose(bool disposing)
{
try
{
PurgeBuffers(disposing);
}
finally
{
// Close the underlying stream even if PurgeBuffers threw.
// Stream.Close() may throw here (may or may not be due to the same error).
// In this case, we still need to clean up internal resources, hence the inner finally blocks.
try
{
if (disposing)
{
_stream?.Dispose();
}
}
finally
{
_stream = null;
try
{
_inflater?.Dispose();
}
finally
{
_inflater = null;
base.Dispose(disposing);
}
}
}
}
/// <summary>
/// Sets up this DeflateManagedStream to be used for Inflation/Decompression
/// </summary>
private void InitializeInflater(Stream stream, ZipCompressionMethod method = ZipCompressionMethod.Deflate)
{
Debug.Assert(stream != null);
Debug.Assert(method == ZipCompressionMethod.Deflate || method == ZipCompressionMethod.Deflate64);
if (!stream.CanRead)
{
throw new ArgumentException("Deflate64: input stream is not readable", nameof(stream));
}
_inflater = new InflaterManaged(method == ZipCompressionMethod.Deflate64);
_stream = stream;
_mode = CompressionMode.Decompress;
_buffer = new byte[DEFAULT_BUFFER_SIZE];
}