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Add support for Human68k 18.3 filenames in FAT.

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This commit is contained in:
Natalia Portillo
2019-04-28 18:12:44 +01:00
parent baf6f46eb2
commit 2d660035a9
5 changed files with 94 additions and 18 deletions
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3
DiscImageChef.Filesystems/FAT/Consts.cs
View File

@@ -221,7 +221,8 @@ namespace DiscImageChef.Filesystems.FAT
Nt,
Lfn,
Os2,
Ecs
Ecs,
Human
}
[Flags]

20
DiscImageChef.Filesystems/FAT/Dir.cs
View File

@@ -211,6 +211,26 @@ namespace DiscImageChef.Filesystems.FAT
if(extension != "") filename = name + "." + extension;
else filename = name;
if(@namespace == Namespace.Human)
{
HumanDirectoryEntry humanEntry =
Marshal.ByteArrayToStructureLittleEndian<HumanDirectoryEntry>(directoryBuffer, pos,
Marshal
.SizeOf<HumanDirectoryEntry
>());
completeEntry.HumanDirent = humanEntry;
name = StringHandlers.CToString(humanEntry.name1, Encoding).TrimEnd();
extension = StringHandlers.CToString(humanEntry.extension, Encoding).TrimEnd();
string name2 = StringHandlers.CToString(humanEntry.name2, Encoding).TrimEnd();
if(extension != "") filename = name + name2 + "." + extension;
else filename = name + name2;
completeEntry.HumanName = filename;
}
// Using array accessor ensures that repeated entries just get substituted.
// Repeated entries are not allowed but some bad implementations (e.g. FAT32.IFS)allow to create them
// when using spaces

7
DiscImageChef.Filesystems/FAT/File.cs
View File

@@ -133,11 +133,14 @@ namespace DiscImageChef.Filesystems.FAT
Length = entry.size,
Inode = (ulong)(fat32 ? (entry.ea_handle << 16) + entry.start_cluster : entry.start_cluster),
Links = 1,
CreationTime = DateHandlers.DosToDateTime(entry.cdate, entry.ctime),
LastWriteTime = DateHandlers.DosToDateTime(entry.mdate, entry.mtime)
CreationTime = DateHandlers.DosToDateTime(entry.cdate, entry.ctime)
};
if(@namespace != Namespace.Human)
{
stat.LastWriteTime = DateHandlers.DosToDateTime(entry.mdate, entry.mtime);
stat.CreationTime = stat.CreationTime?.AddMilliseconds(entry.ctime_ms * 10);
}
if(entry.size % bytesPerCluster > 0) stat.Blocks++;

21
DiscImageChef.Filesystems/FAT/Structs.cs
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@@ -867,6 +867,22 @@ namespace DiscImageChef.Filesystems.FAT
public readonly uint size;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct HumanDirectoryEntry
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
public readonly byte[] name1;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
public readonly byte[] extension;
public readonly FatAttributes attributes;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
public readonly byte[] name2;
public readonly ushort mtime;
public readonly ushort mdate;
public readonly ushort start_cluster;
public readonly uint size;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct LfnEntry
{
@@ -899,6 +915,8 @@ namespace DiscImageChef.Filesystems.FAT
{
public DirectoryEntry Dirent;
public DirectoryEntry Fat32Ea;
public HumanDirectoryEntry HumanDirent;
public string HumanName;
public string Lfn;
public string Longname;
public string Shortname;
@@ -908,6 +926,9 @@ namespace DiscImageChef.Filesystems.FAT
// This ensures LFN takes preference when eCS is in use
if(!string.IsNullOrEmpty(Lfn)) return Lfn;
// This ensures Humans takes preference when present
if(!string.IsNullOrEmpty(HumanName)) return HumanName;
return !string.IsNullOrEmpty(Longname) ? Longname : Shortname;
}
}

37
DiscImageChef.Filesystems/FAT/Super.cs
View File

@@ -60,7 +60,6 @@ namespace DiscImageChef.Filesystems.FAT
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary<string, string> options, string @namespace)
{
Encoding = encoding ?? Encoding.GetEncoding("IBM437");
XmlFsType = new FileSystemType();
if(options == null) options = GetDefaultOptions();
if(options.TryGetValue("debug", out string debugString)) bool.TryParse(debugString, out debug);
@@ -85,6 +84,9 @@ namespace DiscImageChef.Filesystems.FAT
case "lfn":
this.@namespace = Namespace.Lfn;
break;
case "human":
this.@namespace = Namespace.Human;
break;
default: return Errno.InvalidArgument;
}
@@ -227,10 +229,21 @@ namespace DiscImageChef.Filesystems.FAT
}
case BpbKind.Human:
// If not debug set Human68k namespace and ShiftJIS codepage as defaults
if(!debug)
{
this.@namespace = Namespace.Human;
encoding = Encoding.GetEncoding("shift_jis");
}
XmlFsType.Bootable = true;
break;
}
Encoding = encoding ?? (bpbKind == BpbKind.Human
? Encoding.GetEncoding("shift_jis")
: Encoding.GetEncoding("IBM437"));
ulong firstRootSector = 0;
if(!fat32)
@@ -527,6 +540,26 @@ namespace DiscImageChef.Filesystems.FAT
completeEntry.Shortname = filename;
if(this.@namespace == Namespace.Human)
{
HumanDirectoryEntry humanEntry =
Marshal.ByteArrayToStructureLittleEndian<HumanDirectoryEntry>(rootDirectory, i,
Marshal
.SizeOf<HumanDirectoryEntry
>());
completeEntry.HumanDirent = humanEntry;
name = StringHandlers.CToString(humanEntry.name1, Encoding).TrimEnd();
extension = StringHandlers.CToString(humanEntry.extension, Encoding).TrimEnd();
string name2 = StringHandlers.CToString(humanEntry.name2, Encoding).TrimEnd();
if(extension != "") filename = name + name2 + "." + extension;
else filename = name + name2;
completeEntry.HumanName = filename;
}
if(!fat32 && filename == "EA DATA. SF")
{
eaDirEntry = entry;
@@ -699,8 +732,6 @@ namespace DiscImageChef.Filesystems.FAT
}
}
System.Console.WriteLine("First cluster sector: {0}", firstClusterSector);
System.Console.WriteLine("Sectors per cluster: {0}", sectorsPerCluster);
mounted = true;
return Errno.NoError;
}