internal static LongFileName FromPath(string path)
{
byte[] pathData = Encoding.Unicode.GetBytes(path);
LongFileName lfn = new LongFileName();
for (int offset = 0; offset < pathData.Length; offset += 26)
{
byte[] segmentData = new byte[32];
segmentData[0x00] = (byte)(offset == 0 ? 0x42 : 0x01); /* Reserved */
// 0x01+10 - LFS Name
segmentData[0x0B] = (byte)0x0F; /* Attributes (ReadOnly, Hidden, System and VolumeId) */
segmentData[0x0C] = (byte)0x00; /* Reserved */
segmentData[0x0D] = (byte)0x00; /* Checksum */
// 0x0E+12 - LFS Name
segmentData[0x1B] = (byte)0x00; /* Reserved */
// 0x1C+4 - LFS Name
Array.Copy(pathData, offset + 0, segmentData, 0x01, 10);
Array.Copy(pathData, offset + 10, segmentData, 0x0E, 12);
Array.Copy(pathData, offset + 22, segmentData, 0x1C, 4);
lfn.AddEntry(segmentData, 0);
}
return(lfn);
}
private void LoadEntries()
{
LongFileName lfnData = new LongFileName();
_entries = new Dictionary <long, DirectoryEntry>();
_freeEntries = new List <long>();
_selfEntryLocation = -1;
_parentEntryLocation = -1;
while (_dirStream.Position < _dirStream.Length)
{
long streamPos = _dirStream.Position;
DirectoryEntry entry = new DirectoryEntry(FileSystem.FatOptions, _dirStream, FileSystem.FatVariant);
if (entry.Attributes ==
(FatAttributes.ReadOnly | FatAttributes.Hidden | FatAttributes.System | FatAttributes.VolumeId))
{
// Long File Name entry
lfnData.AddEntry(entry);
}
else if (entry.Name.IsDeleted())
{
lfnData.CopyTo(entry.LongName);
lfnData.Clear();
// E5 = Free Entry
_freeEntries.Add(streamPos);
}
else if (entry.Name == FileName.SelfEntryName)
{
lfnData.CopyTo(entry.LongName);
lfnData.Clear();
_selfEntry = entry;
_selfEntryLocation = streamPos;
}
else if (entry.Name == FileName.ParentEntryName)
{
lfnData.CopyTo(entry.LongName);
lfnData.Clear();
_parentEntry = entry;
_parentEntryLocation = streamPos;
}
else if (entry.Name.IsEndMarker())
{
lfnData.CopyTo(entry.LongName);
lfnData.Clear();
// Free Entry, no more entries available
_endOfEntries = streamPos;
break;
}
else
{
lfnData.CopyTo(entry.LongName);
lfnData.Clear();
_entries.Add(streamPos, entry);
}
}
}