/// <summary>
		/// Decompressor for this stream
		/// </summary>
		protected Inflater inf;

		/// <summary>
		/// <see cref="InflaterInputBuffer">Input buffer</see> for this stream.
		/// </summary>
		protected InflaterInputBuffer inputBuffer;

		/// <summary>
		/// Base stream the inflater reads from.
		/// </summary>
		protected Stream baseInputStream;
		
		/// <summary>
		/// The compressed size
		/// </summary>
		protected long csize;

		bool isClosed = false;
		bool isStreamOwner = true;
		
		/// <summary>
		/// Get/set flag indicating ownership of underlying stream.
		/// When the flag is true <see cref="Close"/> will close the underlying stream also.
		/// </summary>
		/// <remarks>
		/// The default value is true.
		/// </remarks>
		public bool IsStreamOwner
		{
			get { return isStreamOwner; }
			set { isStreamOwner = value; }
		}
		
		/// <summary>
		/// Gets a value indicating whether the current stream supports reading
		/// </summary>
		public override bool CanRead {
			get {
				return baseInputStream.CanRead;
			}
		}
		
		/// <summary>
		/// Gets a value of false indicating seeking is not supported for this stream.
		/// </summary>
		public override bool CanSeek {
			get {
				return false;
			}
		}
		
		/// <summary>
		/// Gets a value of false indicating that this stream is not writeable.
		/// </summary>
		public override bool CanWrite {
			get {
				return false;
			}
		}
		
		/// <summary>
		/// A value representing the length of the stream in bytes.
		/// </summary>
		public override long Length {
			get {
				return inputBuffer.RawLength;
			}
		}
		
		/// <summary>
		/// The current position within the stream.
		/// Throws a NotSupportedException when attempting to set the position
		/// </summary>
		/// <exception cref="NotSupportedException">Attempting to set the position</exception>
		public override long Position {
			get {
				return baseInputStream.Position;
			}
			set {
				throw new NotSupportedException("InflaterInputStream Position not supported");
			}
		}
		
		/// <summary>
		/// Flushes the baseInputStream
		/// </summary>
		public override void Flush()
		{
			baseInputStream.Flush();
		}
		
		/// <summary>
		/// Sets the position within the current stream
		/// Always throws a NotSupportedException
		/// </summary>
		/// <exception cref="NotSupportedException">Any access</exception>
		public override long Seek(long offset, SeekOrigin origin)
		{
			throw new NotSupportedException("Seek not supported");
		}
		
		/// <summary>
		/// Set the length of the current stream
		/// Always throws a NotSupportedException
		/// </summary>
		/// <exception cref="NotSupportedException">Any access</exception>
		public override void SetLength(long val)
		{
			throw new NotSupportedException("InflaterInputStream SetLength not supported");
		}
		
		/// <summary>
		/// Writes a sequence of bytes to stream and advances the current position
		/// This method always throws a NotSupportedException
		/// </summary>
		/// <exception cref="NotSupportedException">Any access</exception>
		public override void Write(byte[] array, int offset, int count)
		{
			throw new NotSupportedException("InflaterInputStream Write not supported");
		}
		
		/// <summary>
		/// Writes one byte to the current stream and advances the current position
		/// Always throws a NotSupportedException
		/// </summary>
		/// <exception cref="NotSupportedException">Any access</exception>
		public override void WriteByte(byte val)
		{
			throw new NotSupportedException("InflaterInputStream WriteByte not supported");
		}
		
		/// <summary>
		/// Entry point to begin an asynchronous write.  Always throws a NotSupportedException.
		/// </summary>
		/// <param name="buffer">The buffer to write data from</param>
		/// <param name="offset">Offset of first byte to write</param>
		/// <param name="count">The maximum number of bytes to write</param>
		/// <param name="callback">The method to be called when the asynchronous write operation is completed</param>
		/// <param name="state">A user-provided object that distinguishes this particular asynchronous write request from other requests</param>
		/// <returns>An <see cref="System.IAsyncResult">IAsyncResult</see> that references the asynchronous write</returns>
		/// <exception cref="NotSupportedException">Any access</exception>
		public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
		{
			throw new NotSupportedException("InflaterInputStream BeginWrite not supported");
		}
		
		/// <summary>
		/// Create an InflaterInputStream with the default decompressor
		/// and a default buffer size of 4KB.
		/// </summary>
		/// <param name = "baseInputStream">
		/// The InputStream to read bytes from
		/// </param>
		public InflaterInputStream(Stream baseInputStream) : this(baseInputStream, new Inflater(), 4096)
		{
		}
		
		/// <summary>
		/// Create an InflaterInputStream with the specified decompressor
		/// and a default buffer size of 4KB.
		/// </summary>
		/// <param name = "baseInputStream">
		/// The source of input data
		/// </param>
		/// <param name = "inf">
		/// The decompressor used to decompress data read from baseInputStream
		/// </param>
		public InflaterInputStream(Stream baseInputStream, Inflater inf) : this(baseInputStream, inf, 4096)
		{
		}
		
		/// <summary>
		/// Create an InflaterInputStream with the specified decompressor
		/// and the specified buffer size.
		/// </summary>
		/// <param name = "baseInputStream">
		/// The InputStream to read bytes from
		/// </param>
		/// <param name = "inflater">
		/// The decompressor to use
		/// </param>
		/// <param name = "bufferSize">
		/// Size of the buffer to use
		/// </param>
		public InflaterInputStream(Stream baseInputStream, Inflater inflater, int bufferSize)
		{
			if (baseInputStream == null) {
				throw new ArgumentNullException("InflaterInputStream baseInputStream is null");
			}
			
			if (inflater == null) {
				throw new ArgumentNullException("InflaterInputStream Inflater is null");
			}
			
			if (bufferSize <= 0) {
				throw new ArgumentOutOfRangeException("bufferSize");
			}
			
			this.baseInputStream = baseInputStream;
			this.inf = inflater;
			
			inputBuffer = new InflaterInputBuffer(baseInputStream);
		}
		
		/// <summary>
		/// Returns 0 once the end of the stream (EOF) has been reached.
		/// Otherwise returns 1.
		/// </summary>
		public virtual int Available {
			get {
				return inf.IsFinished ? 0 : 1;
			}
		}
		
		/// <summary>
		/// Closes the input stream.  When <see cref="IsStreamOwner"></see>
		/// is true the underlying stream is also closed.
		/// </summary>
		public override void Close()
		{
			if ( !isClosed ) {
				isClosed = true;
				if ( isStreamOwner) {
					baseInputStream.Close();
				}
			}
		}

		/// <summary>
		/// Fills the buffer with more data to decompress.
		/// </summary>
		/// <exception cref="SharpZipBaseException">
		/// Stream ends early
		/// </exception>
		protected void Fill()
		{
			inputBuffer.Fill();
			inputBuffer.SetInflaterInput(inf);
		}

		/// <summary>
		/// Decompresses data into the byte array
		/// </summary>
		/// <param name ="b">
		/// The array to read and decompress data into
		/// </param>
		/// <param name ="off">
		/// The offset indicating where the data should be placed
		/// </param>
		/// <param name ="len">
		/// The number of bytes to decompress
		/// </param>
		/// <returns>The number of bytes read.  Zero signals the end of stream</returns>
		/// <exception cref="SharpZipBaseException">
		/// Inflater needs a dictionary
		/// </exception>
		public override int Read(byte[] b, int off, int len)
		{
			for (;;) {
				int count;
				try {
					count = inf.Inflate(b, off, len);
				} catch (Exception e) {
					throw new SharpZipBaseException(e.ToString());
				}
				
				if (count > 0) {
					return count;
				}
				
				if (inf.IsNeedingDictionary) {
					throw new SharpZipBaseException("Need a dictionary");
				} else if (inf.IsFinished) {
					return 0;
				} else if (inf.IsNeedingInput) {
					Fill();
				} else {
					throw new InvalidOperationException("Don't know what to do");
				}
			}
		}
		
		/// <summary>
		/// Skip specified number of bytes of uncompressed data
		/// </summary>
		/// <param name ="n">
		/// Number of bytes to skip
		/// </param>
		/// <returns>
		/// The number of bytes skipped, zero if the end of 
		/// stream has been reached
		/// </returns>
		/// <exception cref="ArgumentOutOfRangeException">
		/// Number of bytes to skip is zero or less
		/// </exception>
		public long Skip(long n)
		{
			if (n <= 0) {
				throw new ArgumentOutOfRangeException("n");
			}
			
			// v0.80 Skip by seeking if underlying stream supports it...
			if (baseInputStream.CanSeek) {
				baseInputStream.Seek(n, SeekOrigin.Current);
				return n;
			} else {
				int len = 2048;
				if (n < len) {
					len = (int) n;
				}
				byte[] tmp = new byte[len];
				return (long)baseInputStream.Read(tmp, 0, tmp.Length);
			}
		}
		
		/// <summary>
		/// Clear any cryptographic state.
		/// </summary>		
		protected void StopDecrypting()
		{
			inputBuffer.CryptoTransform = null;
		}
	}
}