mirror of
https://github.com/kwsch/PKHeX
synced 2024-12-19 00:43:14 +00:00
47071b41f3
Existing `get`/`set` logic is flawed in that it doesn't work on Big Endian operating systems, and it allocates heap objects when it doesn't need to. `System.Buffers.Binary.BinaryPrimitives` in the `System.Memory` NuGet package provides both Little Endian and Big Endian methods to read and write data; all the `get`/`set` operations have been reworked to use this new API. This removes the need for PKHeX's manual `BigEndian` class, as all functions are already covered by the BinaryPrimitives API. The `StringConverter` has now been rewritten to accept a Span to read from & write to, no longer requiring a temporary StringBuilder. Other Fixes included: - The Super Training UI for Gen6 has been reworked according to the latest block structure additions. - Cloning a Stadium2 Save File now works correctly (opening from the Folder browser list). - Checksum & Sanity properties removed from parent PKM class, and is now implemented via interface.
68 lines
2.2 KiB
C#
68 lines
2.2 KiB
C#
using System;
|
|
using static System.Buffers.Binary.BinaryPrimitives;
|
|
|
|
namespace PKHeX.Core
|
|
{
|
|
/// <summary>
|
|
/// Gen6+ Block Info (inside BEEF chunk)
|
|
/// </summary>
|
|
public abstract class BlockInfo3DS : BlockInfo
|
|
{
|
|
private readonly int BlockInfoOffset;
|
|
|
|
// ==chunk def== @ BlockInfoOffset
|
|
// u64 timestamp1
|
|
// u64 timestamp2
|
|
// u8[4] BEEF magic
|
|
// n*{blockInfo}, where n varies per sav type
|
|
|
|
// ==block info def==
|
|
// u32 length
|
|
// u16 id
|
|
// u16 checksum
|
|
|
|
// when stored, each block size is rounded up to nearest 0x200, and the next chunk is immediately after
|
|
|
|
protected BlockInfo3DS(int bo, uint id, int ofs, int len)
|
|
{
|
|
BlockInfoOffset = bo;
|
|
ID = id;
|
|
Offset = ofs;
|
|
Length = len;
|
|
}
|
|
|
|
private int ChecksumOffset => BlockInfoOffset + 0x14 + ((int)ID * 8) + 6;
|
|
protected abstract ushort GetChecksum(Span<byte> data);
|
|
|
|
protected override bool ChecksumValid(Span<byte> data)
|
|
{
|
|
ushort chk = GetChecksum(data);
|
|
var old = ReadUInt16LittleEndian(data[ChecksumOffset..]);
|
|
return chk == old;
|
|
}
|
|
|
|
protected override void SetChecksum(Span<byte> data)
|
|
{
|
|
ushort chk = GetChecksum(data);
|
|
WriteUInt16LittleEndian(data[ChecksumOffset..], chk);
|
|
}
|
|
}
|
|
|
|
public sealed class BlockInfo6 : BlockInfo3DS
|
|
{
|
|
public BlockInfo6(int bo, uint id, int ofs, int len) : base(bo, id, ofs, len) { }
|
|
protected override ushort GetChecksum(Span<byte> data) => Checksums.CRC16_CCITT(data.Slice(Offset, Length));
|
|
}
|
|
|
|
public sealed class BlockInfo7 : BlockInfo3DS
|
|
{
|
|
public BlockInfo7(int bo, uint id, int ofs, int len) : base(bo, id, ofs, len) { }
|
|
protected override ushort GetChecksum(Span<byte> data) => Checksums.CRC16Invert(data.Slice(Offset, Length));
|
|
}
|
|
|
|
public sealed class BlockInfo7b : BlockInfo3DS
|
|
{
|
|
public BlockInfo7b(int bo, uint id, int ofs, int len) : base(bo, id, ofs, len) { }
|
|
protected override ushort GetChecksum(Span<byte> data) => Checksums.CRC16NoInvert(data.Slice(Offset, Length));
|
|
}
|
|
}
|