using System.Diagnostics.Contracts;

namespace ReClassNET.Util

{

public static class HexadecimalFormatter

{

private static readonly uint[] lookup = CreateHexLookup();

private static uint[] CreateHexLookup()

{

var result = new uint[256];

for (var i = 0; i < 256; i++)

{

var s = i.ToString("X2");

result[i] = (uint)s[0] + ((uint)s[1] << 16);

}

return result;

}

public static string ToString(byte[] data)

{

Contract.Requires(data != null);

if (data.Length == 0)

{

return string.Empty;

}

var result = new char[data.Length * 2 + data.Length - 1];

var val = lookup[data[0]];

result[0] = (char)val;

result[1] = (char)(val >> 16);

for (var i = 1; i < data.Length; i++)

{

val = lookup[data[i]];

result[3 * i - 1] = ' ';

result[3 * i] = (char)val;

result[3 * i + 1] = (char)(val >> 16);

}

return new string(result);

}

}

}