public ZStreamWriter(Stream stream, int level, uint bufferSize, int bits = zlib.MAX_WBITS)
{
if (!stream.CanWrite)
{
throw new ArgumentException("Stream not writable");
}
if (bufferSize == 0)
{
throw new ArgumentOutOfRangeException("bufferSize", "must be greater zero");
}
baseStream = stream;
zstream = new zlib.z_stream();
switch (zlib.deflateInit(zstream, level, bits))
{
case zlib.Z_OK:
break;
case zlib.Z_MEM_ERROR:
case zlib.Z_STREAM_ERROR:
throw new Exception("zlib memory error");
default:
throw new Exception("Unknown zlib error");
}
zstream.out_buf = new byte[bufferSize];
zstream.next_out = 0;
zstream.avail_out = bufferSize;
}
public ZStreamReader(Stream stream, uint bufferSize, int bits = zlib.DEF_WBITS)
{
if (!stream.CanRead)
{
throw new ArgumentException("Stream not readable.", "stream");
}
if (bufferSize == 0)
{
throw new ArgumentOutOfRangeException("bufferSize", "must be greater zero");
}
baseStream = stream;
zstream = new zlib.z_stream();
switch (zlib.inflateInit(zstream))
{
case zlib.Z_OK:
break;
case zlib.Z_MEM_ERROR:
case zlib.Z_STREAM_ERROR:
throw new Exception("zlib memory error");
default:
throw new Exception("Unknown zlib error");
}
zstream.in_buf = new byte[bufferSize];
zstream.next_in = 0;
zstream.avail_in = (uint)baseStream.Read(zstream.in_buf, (int)zstream.next_in, (int)bufferSize);
}
#pragma warning disable CS0114
public void Close()
{
if (baseStream != null)
{
baseStream.Dispose();
}
baseStream = null;
if (zstream != null)
{
zlib.inflateEnd(zstream);
}
zstream = null;
base.Dispose();
}
public void WriteToEnd()
{
if (baseStream == null)
{
throw new ObjectDisposedException(null, "File closed");
}
int ret;
do
{
ret = zlib.deflate(zstream, zlib.Z_FINISH);
if (ret == zlib.Z_OK)
{
if (zstream.avail_out == 0)
{
baseStream.Write(zstream.out_buf, 0, zstream.next_out);
zstream.next_out = 0;
zstream.avail_out = (uint)zstream.out_buf.Length;
}
}
else if (ret != zlib.Z_STREAM_END)
{
if (zstream.msg != null && zstream.msg.Length > 0)
{
throw new Exception(zstream.msg);
}
throw new Exception("zlib error");
}
} while (ret != zlib.Z_STREAM_END);
if (zstream.next_out > 0)
{
baseStream.Write(zstream.out_buf, 0, zstream.next_out);
zstream.next_out = 0;
zstream.avail_out = (uint)zstream.out_buf.Length;
}
if (zstream != null)
{
zlib.deflateEnd(zstream);
}
zstream = null;
}
