c# - 在 Read 返回 Internal Reader 后，SharpZipLib 无法从此流中读取

Question

我正在使用 SharpZipLib 从数据库中解压缩一些 BLOB。

它不断抛出错误

"Unable to read from this stream"

在调用 Fill() 之前一切正常：

public void Fill()
              {
                     rawLength = 0;
                     int toRead = rawData.Length;

                     while (toRead > 0) {
                           int count = inputStream.Read(rawData, rawLength, toRead);
                           if ( count <= 0 ) {
                                  if (rawLength == 0) {
                                         throw new SharpZipBaseException("Unexpected EOF"); 
                                  }
                                  break;
                           }
                           rawLength += count;
                           toRead -= count;
                     }

#if !NETCF_1_0
                     if ( cryptoTransform != null ) {
                           clearTextLength = cryptoTransform.TransformBlock(rawData, 0, rawLength, clearText, 0);
                     }
                     else 
#endif                     
                     {
                           clearTextLength = rawLength;
                     }

                     available = clearTextLength;
              }

在该行inputStream.Read(rawData, rawLength, toRead);读取被称为：

              public override int Read(byte[] buffer, int offset, int count)
              {
                     if ( buffer == null ) {
                            throw new ArgumentNullException("buffer");
                     }

                     if ( offset < 0 ) {
#if NETCF_1_0
                           throw new ArgumentOutOfRangeException("offset");
#else
                           throw new ArgumentOutOfRangeException("offset", "Cannot be negative");
#endif                     
                     }

                     if ( count < 0 ) {
#if NETCF_1_0
                           throw new ArgumentOutOfRangeException("count");
#else
                           throw new ArgumentOutOfRangeException("count", "Cannot be negative");
#endif
                     }

                     if ( (buffer.Length - offset) < count ) {
                           throw new ArgumentException("Invalid offset/count combination");
                     }

                     return internalReader(buffer, offset, count);
              }

但是，当 Read() 返回时internalReader(buffer, offset, count);，它会转到以下错误捕获器：

int ReadingNotAvailable(byte[] destination, int offset, int count)
              {
                     throw new InvalidOperationException("Unable to read from this stream");
              }

我也将在 Sharp Development 论坛上发布这个问题。如果他们给出一个好的答案，我会发布一个链接。

以下是新方法。这些不是库的一部分。

public static byte[] DecompressNoHeader(byte[] bytInput)
        {
            var ms = new MemoryStream(bytInput, 0, bytInput.Length);
            ZipInputStream zs = new ZipInputStream(ms);
            byte[] bytResult = null;
            string strResult = String.Empty;
            var writeData = new byte[4096];
            Stream s2 = new InflaterInputStream(zs, new Inflater(true));
            try
            {
                bytResult = ReadFullStream(s2);
                s2.Close();
                return bytResult;
            }
            catch
            {
                throw;
            }
        }

        public static byte[] ReadFullStream(Stream stream)
        {
            var buffer = new byte[32768];
            using (var ms = new MemoryStream())
            {
                int offset = 0;  // where were we
                while (true)
                {
                    int read = stream.Read(buffer, 0, buffer.Length);
                    if (read <= 0)
                        return ms.ToArray();
                    ms.Write(buffer, offset, read);
                    offset += read;
                }
            }
        }