Errno GetFileEntry(string path, out PascalFileEntry entry)
{
entry = new PascalFileEntry();
foreach (PascalFileEntry ent in fileEntries.Where(ent =>
string.Compare(path,
StringHandlers
.PascalToString(ent.Filename,
Encoding),
StringComparison
.InvariantCultureIgnoreCase) == 0))
{
entry = ent;
return(Errno.NoError);
}
return(Errno.NoSuchFile);
}
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options, string @namespace)
{
device = imagePlugin;
Encoding = encoding ?? new Apple2();
if (options == null)
{
options = GetDefaultOptions();
}
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out debug);
}
if (device.Info.Sectors < 3)
{
return(Errno.InvalidArgument);
}
multiplier = (uint)(imagePlugin.Info.SectorSize == 256 ? 2 : 1);
// Blocks 0 and 1 are boot code
catalogBlocks = device.ReadSectors(multiplier * 2, multiplier);
// On Apple //, it's little endian
// TODO: Fix
//BigEndianBitConverter.IsLittleEndian =
// multiplier == 2 ? !BitConverter.IsLittleEndian : BitConverter.IsLittleEndian;
mountedVolEntry.FirstBlock = BigEndianBitConverter.ToInt16(catalogBlocks, 0x00);
mountedVolEntry.LastBlock = BigEndianBitConverter.ToInt16(catalogBlocks, 0x02);
mountedVolEntry.EntryType = (PascalFileKind)BigEndianBitConverter.ToInt16(catalogBlocks, 0x04);
mountedVolEntry.VolumeName = new byte[8];
Array.Copy(catalogBlocks, 0x06, mountedVolEntry.VolumeName, 0, 8);
mountedVolEntry.Blocks = BigEndianBitConverter.ToInt16(catalogBlocks, 0x0E);
mountedVolEntry.Files = BigEndianBitConverter.ToInt16(catalogBlocks, 0x10);
mountedVolEntry.Dummy = BigEndianBitConverter.ToInt16(catalogBlocks, 0x12);
mountedVolEntry.LastBoot = BigEndianBitConverter.ToInt16(catalogBlocks, 0x14);
mountedVolEntry.Tail = BigEndianBitConverter.ToInt32(catalogBlocks, 0x16);
if (mountedVolEntry.FirstBlock != 0 ||
mountedVolEntry.LastBlock <= mountedVolEntry.FirstBlock ||
(ulong)mountedVolEntry.LastBlock > (device.Info.Sectors / multiplier) - 2 ||
(mountedVolEntry.EntryType != PascalFileKind.Volume &&
mountedVolEntry.EntryType != PascalFileKind.Secure) ||
mountedVolEntry.VolumeName[0] > 7 ||
mountedVolEntry.Blocks < 0 ||
(ulong)mountedVolEntry.Blocks != device.Info.Sectors / multiplier ||
mountedVolEntry.Files < 0)
{
return(Errno.InvalidArgument);
}
catalogBlocks = device.ReadSectors(multiplier * 2,
(uint)(mountedVolEntry.LastBlock - mountedVolEntry.FirstBlock - 2) *
multiplier);
int offset = 26;
fileEntries = new List <PascalFileEntry>();
while (offset + 26 < catalogBlocks.Length)
{
var entry = new PascalFileEntry
{
Filename = new byte[16],
FirstBlock = BigEndianBitConverter.ToInt16(catalogBlocks, offset + 0x00),
LastBlock =
BigEndianBitConverter.ToInt16(catalogBlocks, offset + 0x02),
EntryType = (PascalFileKind)BigEndianBitConverter.ToInt16(catalogBlocks, offset + 0x04),
LastBytes = BigEndianBitConverter.ToInt16(catalogBlocks, offset + 0x16),
ModificationTime = BigEndianBitConverter.ToInt16(catalogBlocks, offset + 0x18)
};
Array.Copy(catalogBlocks, offset + 0x06, entry.Filename, 0, 16);
if (entry.Filename[0] <= 15 &&
entry.Filename[0] > 0)
{
fileEntries.Add(entry);
}
offset += 26;
}
bootBlocks = device.ReadSectors(0, 2 * multiplier);
XmlFsType = new FileSystemType
{
Bootable = !ArrayHelpers.ArrayIsNullOrEmpty(bootBlocks), Clusters = (ulong)mountedVolEntry.Blocks,
ClusterSize = device.Info.SectorSize, Files = (ulong)mountedVolEntry.Files,
FilesSpecified = true,
Type = "UCSD Pascal",
VolumeName =
StringHandlers.PascalToString(mountedVolEntry.VolumeName, Encoding)
};
mounted = true;
return(Errno.NoError);
}
