// /**
//  * File: UnbufferedStreamreader.cs
//  * Author: haraldwolff
//  *
//  * This file and it's content is copyrighted by the Author and / or copyright holder.
//  * Any use wihtout proper permission is illegal and may lead to legal actions.
//  *
//  *
//  **/
using System;
using System.IO;
using System.Text;
namespace ln.http.io
{
    public class UnbufferedStreamReader : TextReader
    {
        public Stream Stream { get; }

        public UnbufferedStreamReader(Stream stream)
        {
            Stream = stream;
        }

        public override int Read() => Stream.ReadByte();

        public override string ReadLine()
        {
            StringBuilder stringBuilder = new StringBuilder();

            char ch;

            while ((ch = (char)Stream.ReadByte()) != -1)
            {
                if (ch == '\r')
                {
                    ch = (char)Stream.ReadByte();
                    if (ch == '\n')
                        return stringBuilder.ToString();

                    stringBuilder.Append('\r');
                }
                stringBuilder.Append(ch);
            }

            if ((ch == -1) && (stringBuilder.Length == 0))
                return null;

            return stringBuilder.ToString();
        }

        public string ReadToken()
        {
            StringBuilder stringBuilder = new StringBuilder();
            char ch = (char)Stream.ReadByte();

            while (char.IsWhiteSpace(ch))
                ch = (char)Stream.ReadByte();

            while (!char.IsWhiteSpace(ch))
            {
                stringBuilder.Append(ch);
                ch = (char)Stream.ReadByte();
            }

            return stringBuilder.ToString();
        }
    }
}