using System;
using System.Text;

namespace sharp.extensions
{
	public class HexString
	{
		public static byte[] toBytes(char[] hexstring){
			return toBytes(new String(hexstring));
		}

		public static byte[] toBytes(string hexstring)
		{
			byte[] bytes = new byte[hexstring.Length >> 1];
			for (int n = 0; n < hexstring.Length >> 1;n++){
				bytes[n] = Convert.ToByte(hexstring.Substring(n << 1, 2), 16);
			}
			return bytes;
		}

		public static String toString(byte[] bytes)
		{
			return BitConverter.ToString(bytes).Replace("-", String.Empty);
		}

		public static String toString(byte[] bytes,int groupsize)
		{
			StringBuilder sb = new StringBuilder();
			String hs = BitConverter.ToString(bytes).Replace("-", String.Empty);
			int n = hs.Length / (groupsize * 2);

			for (int i = 0; i < n;i++){
				sb.Append(hs.Substring(n * (groupsize * 2), (groupsize * 2)));
				sb.Append(" ");
			}

			return sb.ToString();
		}

		public static String toString(byte[] bytes, int groupsize,int linewidth)
		{
			StringBuilder sb = new StringBuilder();
			String hs = BitConverter.ToString(bytes).Replace("-", String.Empty);
			int n = hs.Length / (groupsize * 2);

			for (int i = 0; i < n; i++)
			{
				sb.Append(hs.Substring(i * (groupsize * 2), (groupsize * 2)));
				if ((i!=0)&&((i % linewidth)==(linewidth-1))){
					sb.AppendLine();
				} else {
					sb.Append(" ");
				}
			}

			return sb.ToString();
		}

	}
}