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using System;
using System.IO;
#if NETCOREAPP1_0_OR_GREATER || NET45_OR_GREATER || NETSTANDARD1_0_OR_GREATER
using System.Threading;
using System.Threading.Tasks;
#endif
namespace Org.BouncyCastle.Utilities.IO
{
public class FilterStream
: Stream
{
protected readonly Stream s;
public FilterStream(Stream s)
{
this.s = s ?? throw new ArgumentNullException(nameof(s));
}
public override bool CanRead
{
get { return s.CanRead; }
}
public override bool CanSeek
{
get { return s.CanSeek; }
}
public override bool CanWrite
{
get { return s.CanWrite; }
}
#if NETCOREAPP2_0_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public override void CopyTo(Stream destination, int bufferSize)
{
Streams.CopyTo(s, destination, bufferSize);
}
#endif
#if NETCOREAPP1_0_OR_GREATER || NET45_OR_GREATER || NETSTANDARD1_0_OR_GREATER
public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
{
return Streams.CopyToAsync(s, destination, bufferSize, cancellationToken);
}
#endif
public override void Flush()
{
s.Flush();
}
public override long Length
{
get { return s.Length; }
}
public override long Position
{
get { return s.Position; }
set { s.Position = value; }
}
public override int Read(byte[] buffer, int offset, int count)
{
return s.Read(buffer, offset, count);
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public override int Read(Span<byte> buffer)
{
return s.Read(buffer);
}
public override ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken = default)
{
return Streams.ReadAsync(s, buffer, cancellationToken);
}
#endif
public override int ReadByte()
{
return s.ReadByte();
}
public override long Seek(long offset, SeekOrigin origin)
{
return s.Seek(offset, origin);
}
public override void SetLength(long value)
{
s.SetLength(value);
}
public override void Write(byte[] buffer, int offset, int count)
{
s.Write(buffer, offset, count);
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
public override void Write(ReadOnlySpan<byte> buffer)
{
s.Write(buffer);
}
public override ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken cancellationToken = default)
{
return Streams.WriteAsync(s, buffer, cancellationToken);
}
#endif
public override void WriteByte(byte value)
{
s.WriteByte(value);
}
protected void Detach(bool disposing)
{
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
s.Dispose();
}
base.Dispose(disposing);
}
}
}
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