HISP/Horse Isle Server/HorseIsleServer/Server/Converters.cs
2021-01-28 23:27:58 +13:00

47 lines
1.5 KiB
C#
Executable file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HISP.Server
{
class Converters
{
// Thanks Stackoverflow (https://stackoverflow.com/questions/321370/how-can-i-convert-a-hex-string-to-a-byte-array)
private static int getHexVal(char hex)
{
int val = (int)hex;
//For uppercase A-F letters:
//return val - (val < 58 ? 48 : 55);
//For lowercase a-f letters:
//return val - (val < 58 ? 48 : 87);
//Or the two combined, but a bit slower:
return val - (val < 58 ? 48 : (val < 97 ? 55 : 87));
}
public static byte[] StringToByteArray(string hex)
{
if (hex.Length % 2 == 1)
throw new ArgumentException("The binary key cannot have an odd number of digits");
byte[] arr = new byte[hex.Length >> 1];
for (int i = 0; i < hex.Length >> 1; ++i)
{
arr[i] = (byte)((getHexVal(hex[i << 1]) << 4) + (getHexVal(hex[(i << 1) + 1])));
}
return arr;
}
public static DateTime UnixTimeStampToDateTime(double unixTimeStamp)
{
// Unix timestamp is seconds past epoch
System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);
dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToLocalTime();
return dtDateTime;
}
}
}