R/Ryujinx.HLE/OsHle/SystemState/UserId.cs

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using Ryujinx.HLE.OsHle.Utilities;
using System;
using System.IO;
using System.Linq;
namespace Ryujinx.HLE.OsHle.SystemState
{
public struct UserId
{
public string UserIdHex { get; private set; }
public byte[] Bytes { get; private set; }
public UserId(long Low, long High)
{
if ((Low | High) == 0)
{
throw new ArgumentException("Zero is not a valid user id!");
}
byte[] Bytes = new byte[16];
int Index = Bytes.Length;
void WriteBytes(long Value)
{
for (int Byte = 0; Byte < 8; Byte++)
{
Bytes[--Index] = (byte)(Value >> Byte * 8);
}
}
WriteBytes(Low);
WriteBytes(High);
UserIdHex = string.Empty;
foreach (byte Byte in Bytes)
{
UserIdHex += Byte.ToString("X2");
}
this.Bytes = Bytes;
}
public UserId(string UserIdHex)
{
if (UserIdHex == null || UserIdHex.Length != 32 || !UserIdHex.All("0123456789abcdefABCDEF".Contains))
{
throw new ArgumentException("Invalid user id!", nameof(UserIdHex));
}
if (UserIdHex == "00000000000000000000000000000000")
{
throw new ArgumentException("Zero is not a valid user id!", nameof(UserIdHex));
}
this.UserIdHex = UserIdHex.ToUpper();
Bytes = StringUtils.HexToBytes(UserIdHex);
}
internal void Write(BinaryWriter Writer)
{
for (int Index = Bytes.Length - 1; Index >= 0; Index--)
{
Writer.Write(Bytes[Index]);
}
}
public override string ToString()
{
return UserIdHex;
}
}
}