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Add Nintendo Disc extensions tests

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This commit is contained in:
Matt Nadareski
2026-05-12 22:47:19 -04:00
parent b805c91cb3
commit cf586f7af2
3 changed files with 172 additions and 38 deletions
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43
SabreTools.Data.Extensions/NintendoDiscExtensions.cs
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@@ -1,8 +1,8 @@
using SabreTools.Data.Models.NintendoDisc;
using SabreTools.Numerics.Extensions;
namespace SabreTools.Data.Extensions
{
// TODO: Write tests for these
public static class NintendoDiscExtensions
{
/// <summary>
@@ -14,12 +14,51 @@ namespace SabreTools.Data.Extensions
return Platform.Wii;
else if (header.GCMagic == Constants.GCMagicWord)
return Platform.GameCube;
else if (header.GameId is not null && header.GameId.Length >= 1 && IsGameCubeTitleType(header.GameId[0]))
else if (header.GameId.Length >= 1 && IsGameCubeTitleType(header.GameId[0]))
return Platform.GameCube;
else
return Platform.Unknown;
}
/// <summary>
/// Get the platform associated with a disc header
/// </summary>
public static Platform GetPlatform(this byte[] header)
{
// Check for Wii magic bytes
if (header.Length >= 0x1C)
{
int offset = 0x18;
uint magic = header.ReadUInt32BigEndian(ref offset);
if (magic == Constants.WiiMagicWord)
return Platform.Wii;
}
// Check for GameCube magic bytes
if (header.Length >= 0x20)
{
int offset = 0x1C;
uint magic = header.ReadUInt32BigEndian(ref offset);
if (magic == Constants.GCMagicWord)
return Platform.GameCube;
}
// Check for a valid game ID
if (header.Length >= 4)
{
for (int i = 0; i < 4; i++)
{
byte c = header[i];
if (!((c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')))
return Platform.Unknown;
}
return Platform.GameCube;
}
return Platform.Unknown;
}
/// <summary>
/// Returns true if the GameId first character is a known GameCube title type prefix.
/// Used as a fallback when the GC magic word is absent from the disc image.