System.IO.Compression.ZipArchiveEntry.GetDataDecompressor C# (CSharp) Méthode

        private Stream GetDataDecompressor(Stream compressedStreamToRead)
        {
            Stream uncompressedStream = null;
            switch (CompressionMethod)
            {
                case CompressionMethodValues.Deflate:
                    uncompressedStream = new DeflateStream(compressedStreamToRead, CompressionMode.Decompress);
                    break;
                case CompressionMethodValues.Deflate64:
                    uncompressedStream = new DeflateManagedStream(compressedStreamToRead, CompressionMethodValues.Deflate64);
                    break;
                case CompressionMethodValues.Stored:
                default:
                    //we can assume that only deflate/deflate64/stored are allowed because we assume that
                    //IsOpenable is checked before this function is called
                    Debug.Assert(CompressionMethod == CompressionMethodValues.Stored);

                    uncompressedStream = compressedStreamToRead;
                    break;
            }

            return uncompressedStream;
        }