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using Ryujinx.HLE.HOS;
using System;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
namespace Ryujinx.HLE.Utilities
{
static class StringUtils
{
public static byte[] GetFixedLengthBytes(string InputString, int Size, Encoding Encoding)
{
InputString = InputString + "\0";
int BytesCount = Encoding.GetByteCount(InputString);
byte[] Output = new byte[Size];
if (BytesCount < Size)
{
Encoding.GetBytes(InputString, 0, InputString.Length, Output, 0);
}
else
{
int NullSize = Encoding.GetByteCount("\0");
Output = Encoding.GetBytes(InputString);
Array.Resize(ref Output, Size - NullSize);
Output = Output.Concat(Encoding.GetBytes("\0")).ToArray();
}
return Output;
}
public static byte[] HexToBytes(string HexString)
{
//Ignore last charactor if HexLength % 2 != 0.
int BytesInHex = HexString.Length / 2;
byte[] Output = new byte[BytesInHex];
for (int Index = 0; Index < BytesInHex; Index++)
{
Output[Index] = byte.Parse(HexString.Substring(Index * 2, 2), NumberStyles.HexNumber);
}
return Output;
}
public static string ReadUtf8String(ServiceCtx Context, int Index = 0)
{
long Position = Context.Request.PtrBuff[Index].Position;
long Size = Context.Request.PtrBuff[Index].Size;
using (MemoryStream MS = new MemoryStream())
{
while (Size-- > 0)
{
byte Value = Context.Memory.ReadByte(Position++);
if (Value == 0)
{
break;
}
MS.WriteByte(Value);
}
return Encoding.UTF8.GetString(MS.ToArray());
}
}
}
}
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