using System;
using System.Text;

namespace Model
{
	public static class ByteHelper
	{
		public static string ToHex(this byte b)
		{
			return b.ToString("X2");
		}

		public static string ToHex(this byte[] bytes)
		{
			StringBuilder stringBuilder = new StringBuilder();
			foreach (byte b in bytes)
			{
				stringBuilder.Append(b.ToString("X2"));
			}
			return stringBuilder.ToString();
		}

		public static string ToHex(this byte[] bytes, string format)
		{
			StringBuilder stringBuilder = new StringBuilder();
			foreach (byte b in bytes)
			{
				stringBuilder.Append(b.ToString(format));
			}
			return stringBuilder.ToString();
		}

		public static string ToHex(this byte[] bytes, int offset, int count)
		{
			StringBuilder stringBuilder = new StringBuilder();
			for (int i = offset; i < offset + count; ++i)
			{
				stringBuilder.Append(bytes[i].ToString("X2"));
			}
			return stringBuilder.ToString();
		}

		public static string ToStr(this byte[] bytes)
		{
			return Encoding.Default.GetString(bytes);
		}

		public static string ToStr(this byte[] bytes, int index, int count)
		{
			return Encoding.Default.GetString(bytes, index, count);
		}

		public static string Utf8ToStr(this byte[] bytes)
		{
			return Encoding.UTF8.GetString(bytes);
		}

		public static string Utf8ToStr(this byte[] bytes, int index, int count)
		{
			return Encoding.UTF8.GetString(bytes, index, count);
		}
	}
}