StringStream.cs

using System.IO;
using System.Text;

namespace AdventOfCode.Year2019.Day09;

public class StringStream : Stream
{
	private readonly MemoryStream _memory;
	public StringStream(string text)
	{
		_memory = new MemoryStream(Encoding.UTF8.GetBytes(text));
	}
	public StringStream()
	{
		_memory = new MemoryStream();
	}
	public StringStream(int capacity)
	{
		_memory = new MemoryStream(capacity);
	}
	public override void Flush()
	{
		_memory.Flush();
	}
	public override int Read(byte[] buffer, int offset, int count)
	{
		return _memory.Read(buffer, offset, count);
	}
	public override long Seek(long offset, SeekOrigin origin)
	{
		return _memory.Seek(offset, origin);
	}
	public override void SetLength(long value)
	{
		_memory.SetLength(value);
	}
	public override void Write(byte[] buffer, int offset, int count)
	{
		_memory.Write(buffer, offset, count);
	}
	public override bool CanRead => _memory.CanRead;
	public override bool CanSeek => _memory.CanSeek;
	public override bool CanWrite => _memory.CanWrite;
	public override long Length => _memory.Length;
	public override long Position
	{
		get => _memory.Position;
		set => _memory.Position = value;
	}
	public override string ToString()
	{
		return Encoding.UTF8.GetString(_memory.GetBuffer(), 0, (int)_memory.Length);
	}
	public override int ReadByte()
	{
		return _memory.ReadByte();
	}
	public override void WriteByte(byte value)
	{
		_memory.WriteByte(value);
	}
}