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Injector: Just use Convert.ToHexString for Decoder now that we don't target .NET framework

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DESKTOP-SN9KF5O\Strawberry
2026-01-30 01:45:34 +00:00
parent ef2780c17b
commit 076d113a4d
1 changed files with 2 additions and 34 deletions
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36
NHSE.Injection/SysBot/Decoder.cs
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@@ -4,38 +4,6 @@ namespace NHSE.Injection;
public static class Decoder
{
private static bool IsNum(char c) => (uint)(c - '0') <= 9;
private static bool IsHexUpper(char c) => (uint)(c - 'A') <= 5;
public static byte[] ConvertHexByteStringToBytes(ReadOnlySpan<byte> bytes)
{
var dest = new byte[bytes.Length / 2];
LoadHexBytesTo(bytes, dest, 2);
return dest;
}
public static void LoadHexBytesTo(ReadOnlySpan<byte> str, Span<byte> dest, int tupleSize)
{
// The input string is 2-char hex values optionally separated.
// The destination array should always be larger or equal than the bytes written. Let the runtime bounds check us.
// Iterate through the string without allocating.
for (int i = 0, j = 0; i < str.Length; i += tupleSize)
dest[j++] = DecodeTuple((char)str[i + 0], (char)str[i + 1]);
}
private static byte DecodeTuple(char _0, char _1)
{
return (byte)(DecodeChar(_0) << 4 | DecodeChar(_1));
static int DecodeChar(char x)
{
if (char.IsAsciiDigit(x))
return (byte)(x - '0');
if (char.IsAsciiHexDigitUpper(x))
return (byte)(x - 'A' + 10);
if (char.IsAsciiHexDigitLower(x))
return (byte)(x - 'a' + 10);
throw new ArgumentOutOfRangeException(nameof(_0));
}
}
public static byte[] ConvertHexByteStringToBytes(byte[] bytes)
=> Convert.FromHexString(bytes.AsSpan(0, bytes.Length - 1));
}