using System.IO;

namespace Com.Xagasoft.Gats
{
    public class GatsString : GatsObject
    {
        public byte[] Value { get; set; }

        public GatsString()
        {
        }

        public GatsString( byte[] val )
        {
            Value = val;
        }

        public GatsString( string val )
        {
            Value = System.Text.Encoding.UTF8.GetBytes( val );
        }

        public override string ToString()
        {
            return System.Text.Encoding.UTF8.GetString( Value );
        }

        public override void Read( Stream s, char cType )
        {
            int Size = (int)GatsInteger.ReadPackedInt( s );
            Value = new byte[Size];
            int SoFar = 0;
            do
            {
                SoFar += s.Read( Value, SoFar, Size-SoFar );
            } while( SoFar < Size );
        }

        public override void Write( Stream s )
        {
            s.WriteByte( (byte)'s' );
            if( Value == null )
            {
                GatsInteger.WritePackedInt( s, 0 );
            }
            else
            {
                GatsInteger.WritePackedInt( s, Value.Length );
                s.Write( Value, 0, Value.Length );
            }
        }
    };
}