using System;
using System.IO;

namespace Org.BouncyCastle.Utilities.IO
{
    public abstract class BaseOutputStream
        : Stream
    {
        public sealed override bool CanRead { get { return false; } }
        public sealed override bool CanSeek { get { return false; } }
        public sealed override bool CanWrite { get { return true; } }

        public override void Flush() {}
        public sealed override long Length { get { throw new NotSupportedException(); } }
        public sealed override long Position
        {
            get { throw new NotSupportedException(); }
            set { throw new NotSupportedException(); }
        }
        public sealed override int Read(byte[] buffer, int offset, int count) { throw new NotSupportedException(); }
        public sealed override long Seek(long offset, SeekOrigin origin) { throw new NotSupportedException(); }
        public sealed override void SetLength(long value) { throw new NotSupportedException(); }

        public override void Write(byte[] buffer, int offset, int count)
        {
            Streams.ValidateBufferArguments(buffer, offset, count);

            for (int i = 0; i < count; ++i)
            {
                WriteByte(buffer[offset + i]);
            }
        }

        public virtual void Write(params byte[] buffer)
        {
            Write(buffer, 0, buffer.Length);
        }

        public override void WriteByte(byte value)
        {
            Write(new byte[]{ value }, 0, 1);
        }
    }
}
