using GostCryptography.Properties;
using System.IO;

namespace GostCryptography.Asn1.Ber
{
    public abstract class Asn1OutputStream : Stream
    {
        protected readonly Stream OutputStream;

        public Asn1OutputStream(Stream outputStream)
        {
            OutputStream = outputStream;
        }

        public override bool CanRead
        {
            get { return false; }
        }

        public override bool CanSeek
        {
            get { return OutputStream.CanSeek; }
        }

        public override bool CanWrite
        {
            get { return OutputStream.CanWrite; }
        }

        public override long Length
        {
            get { return OutputStream.Length; }
        }

        public override long Position
        {
            get { return OutputStream.Position; }
            set { OutputStream.Position = value; }
        }

        public override void Close()
        {
            OutputStream.Close();
        }

        public override void Flush()
        {
            OutputStream.Flush();
        }

        public override int Read(byte[] buffer, int offset, int count)
        {
            throw ExceptionUtility.NotSupported(Resources.Asn1ReadOutputStreamNotSupported);
        }

        public override long Seek(long offset, SeekOrigin origin)
        {
            return OutputStream.Seek(offset, origin);
        }

        public override void SetLength(long value)
        {
            OutputStream.SetLength(value);
        }

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

        public override void Write(byte[] b, int off, int len)
        {
            OutputStream.Write(b, off, len);
        }

        public override void WriteByte(byte b)
        {
            OutputStream.WriteByte(b);
        }

        public virtual void WriteByte(int b)
        {
            OutputStream.WriteByte((byte)b);
        }
    }
}