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ryujinx-final/Ryujinx.HLE/Utilities/StringUtils.cs
Ac_K 5d08e9b495
hos: Cleanup the project (#2634)
* hos: Cleanup the project

Since a lot of changes has been done on the HOS project, there are some leftover here and there, or class just used in one service, things at wrong places, and more.
This PR fixes that, additionnally to that, I've realigned some vars because I though it make the code more readable.

* Address gdkchan feedback

* addresses Thog feedback

* Revert ElfSymbol
2021-09-15 01:24:49 +02:00

136 lines
No EOL
3.6 KiB
C#

using LibHac.Common;
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 += "\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 character 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)
{
ulong position = context.Request.PtrBuff[index].Position;
ulong size = context.Request.PtrBuff[index].Size;
using (MemoryStream ms = new MemoryStream())
{
while (size-- > 0)
{
byte value = context.Memory.Read<byte>(position++);
if (value == 0)
{
break;
}
ms.WriteByte(value);
}
return Encoding.UTF8.GetString(ms.ToArray());
}
}
public static U8Span ReadUtf8Span(ServiceCtx context, int index = 0)
{
ulong position = context.Request.PtrBuff[index].Position;
ulong size = context.Request.PtrBuff[index].Size;
ReadOnlySpan<byte> buffer = context.Memory.GetSpan(position, (int)size);
return new U8Span(buffer);
}
public static string ReadUtf8StringSend(ServiceCtx context, int index = 0)
{
ulong position = context.Request.SendBuff[index].Position;
ulong size = context.Request.SendBuff[index].Size;
using (MemoryStream ms = new MemoryStream())
{
while (size-- > 0)
{
byte value = context.Memory.Read<byte>(position++);
if (value == 0)
{
break;
}
ms.WriteByte(value);
}
return Encoding.UTF8.GetString(ms.ToArray());
}
}
public static unsafe int CompareCStr(char* s1, char* s2)
{
int s1Index = 0;
int s2Index = 0;
while (s1[s1Index] != 0 && s2[s2Index] != 0 && s1[s1Index] == s2[s2Index])
{
s1Index += 1;
s2Index += 1;
}
return s2[s2Index] - s1[s1Index];
}
public static unsafe int LengthCstr(char* s)
{
int i = 0;
while (s[i] != '\0')
{
i++;
}
return i;
}
}
}