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[PCExchange] Use new source generator based big endian marshaller

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This commit is contained in:
Natalia Portillo
2025-10-21 04:00:33 +01:00
parent fea6b18873
commit dc4cf3d3c0
1 changed files with 19 additions and 17 deletions
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36
Aaru.Filters/PCExchange.cs
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@@ -37,6 +37,7 @@ using System.Globalization;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using Aaru.CommonTypes.Attributes;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
@@ -47,7 +48,7 @@ namespace Aaru.Filters;
/// <inheritdoc />
/// <summary>Decodes PCExchange files</summary>
[SuppressMessage("ReSharper", "UnusedMember.Local")]
public sealed class PcExchange : IFilter
public sealed partial class PcExchange : IFilter
{
const string FILE_ID = "FILEID.DAT";
const string FINDER_INFO = "FINDER.DAT";
@@ -136,7 +137,7 @@ public sealed class PcExchange : IFilter
var datEntry = new Entry();
var datEntryB = new byte[Marshal.SizeOf(datEntry)];
finderDatStream.EnsureRead(datEntryB, 0, Marshal.SizeOf(datEntry));
datEntry = Helpers.Marshal.ByteArrayToStructureBigEndian<Entry>(datEntryB);
datEntry = Helpers.Marshal.ByteArrayToStructureBigEndianGenerated<Entry>(datEntryB);
// TODO: Add support for encoding on filters
string macName = StringHandlers.PascalToString(datEntry.macName, Encoding.GetEncoding("macintosh"));
@@ -193,7 +194,7 @@ public sealed class PcExchange : IFilter
var datEntry = new Entry();
var datEntryB = new byte[Marshal.SizeOf(datEntry)];
finderDatStream.EnsureRead(datEntryB, 0, Marshal.SizeOf(datEntry));
datEntry = Helpers.Marshal.ByteArrayToStructureBigEndian<Entry>(datEntryB);
datEntry = Helpers.Marshal.ByteArrayToStructureBigEndianGenerated<Entry>(datEntryB);
string macName = StringHandlers.PascalToString(datEntry.macName, Encoding.GetEncoding("macintosh"));
@@ -247,40 +248,41 @@ public sealed class PcExchange : IFilter
#region Nested type: Entry
[StructLayout(LayoutKind.Sequential, Pack = 1)]
readonly struct Entry
[SwapEndian]
struct Entry
{
/// <summary>
/// Name in Macintosh. If PCExchange version supports FAT's LFN they are the same. Illegal characters for FAT get
/// substituted with '_' both here and in FAT's LFN entry.
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
public readonly byte[] macName;
public byte[] macName;
/// <summary>File type</summary>
public readonly uint type;
public uint type;
/// <summary>File creator</summary>
public readonly uint creator;
public uint creator;
/// <summary>Finder flags</summary>
public readonly ushort fdFlags;
public ushort fdFlags;
/// <summary>File's icon vertical position within its window</summary>
public readonly ushort verticalPosition;
public ushort verticalPosition;
/// <summary>File's icon horizontal position within its window</summary>
public readonly ushort horizontalPosition;
public ushort horizontalPosition;
/// <summary>Unknown, all bytes are empty but last, except in volume's label entry</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 18)]
public readonly byte[] unknown1;
public byte[] unknown1;
/// <summary>File's creation date</summary>
public readonly uint creationDate;
public uint creationDate;
/// <summary>File's modification date</summary>
public readonly uint modificationDate;
public uint modificationDate;
/// <summary>File's last backup date</summary>
public readonly uint backupDate;
public uint backupDate;
/// <summary>Unknown, but is unique, starts 0x7FFFFFFF and counts in reverse. Probably file ID for alias look up?</summary>
public readonly uint unknown2;
public uint unknown2;
/// <summary>Name as in FAT entry (not LFN). Resource fork file is always using this name, never LFN.</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
public readonly byte[] dosName;
public byte[] dosName;
/// <summary>Unknown, flags?</summary>
public readonly byte unknown3;
public byte unknown3;
}
#endregion