public static DeflateStreamNative Create(Stream compressedStream, CompressionMode mode, bool gzip)
{
var dsn = new DeflateStreamNative();
dsn.data = GCHandle.Alloc(dsn);
dsn.feeder = mode == CompressionMode.Compress ? new UnmanagedReadOrWrite(UnmanagedWrite) : new UnmanagedReadOrWrite(UnmanagedRead);
dsn.z_stream = CreateZStream(mode, gzip, dsn.feeder, GCHandle.ToIntPtr(dsn.data));
if (dsn.z_stream == IntPtr.Zero)
{
dsn.Dispose(true);
return(null);
}
dsn.base_stream = compressedStream;
return(dsn);
}
internal DeflateStream (Stream compressedStream, CompressionMode mode, bool leaveOpen, bool gzip)
{
if (compressedStream == null)
throw new ArgumentNullException ("compressedStream");
if (mode != CompressionMode.Compress && mode != CompressionMode.Decompress)
throw new ArgumentException ("mode");
this.base_stream = compressedStream;
this.native = DeflateStreamNative.Create (compressedStream, mode, gzip);
if (this.native == null) {
throw new NotImplementedException ("Failed to initialize zlib. You probably have an old zlib installed. Version 1.2.0.4 or later is required.");
}
this.mode = mode;
this.leaveOpen = leaveOpen;
}
internal DeflateStream(Stream compressedStream, CompressionMode mode, bool leaveOpen, bool gzip)
{
if (compressedStream == null)
{
throw new ArgumentNullException("compressedStream");
}
if (mode != CompressionMode.Compress && mode != CompressionMode.Decompress)
{
throw new ArgumentException("mode");
}
this.base_stream = compressedStream;
this.native = DeflateStreamNative.Create(compressedStream, mode, gzip);
if (this.native == null)
{
throw new NotImplementedException("Failed to initialize zlib. You probably have an old zlib installed. Version 1.2.0.4 or later is required.");
}
this.mode = mode;
this.leaveOpen = leaveOpen;
}
public static DeflateStreamNative Create (Stream compressedStream, CompressionMode mode, bool gzip)
{
var dsn = new DeflateStreamNative ();
dsn.data = GCHandle.Alloc (dsn);
dsn.feeder = mode == CompressionMode.Compress ? new UnmanagedReadOrWrite (UnmanagedWrite) : new UnmanagedReadOrWrite (UnmanagedRead);
dsn.z_stream = CreateZStream (mode, gzip, dsn.feeder, GCHandle.ToIntPtr (dsn.data));
if (dsn.z_stream == IntPtr.Zero) {
dsn.Dispose (true);
return null;
}
dsn.base_stream = compressedStream;
return dsn;
}