PKHeX/PKHeX.Core/Saves/Util/Recognition/SaveHandlerDeSmuME.cs
Kurt 1d94baeb7f Fix footer size chop
oops, another hotfix
2022-06-28 16:54:18 -07:00

41 lines
1.1 KiB
C#

using System;
namespace PKHeX.Core;
/// <summary>
/// Logic for recognizing .dsv save files from DeSmuME.
/// </summary>
public sealed class SaveHandlerDeSmuME : ISaveHandler
{
private const int sizeFooter = 0x7A;
private const int RealSize = SaveUtil.SIZE_G4RAW;
private const int ExpectedSize = RealSize + sizeFooter;
private const string SignatureDSV = "|-DESMUME SAVE-|";
private static bool GetHasFooter(ReadOnlySpan<byte> input)
{
var start = input.Length - SignatureDSV.Length;
var footer = input[start..];
for (int i = SignatureDSV.Length - 1; i >= 0; i--)
{
byte c = (byte)SignatureDSV[i];
if (footer[i] != c)
return false;
}
return true;
}
public bool IsRecognized(int size) => size is ExpectedSize;
public SaveHandlerSplitResult? TrySplit(ReadOnlySpan<byte> input)
{
if (!GetHasFooter(input))
return null;
var footer = input[RealSize..].ToArray();
var data = input[..RealSize].ToArray();
return new SaveHandlerSplitResult(data, Array.Empty<byte>(), footer);
}
}