/// <summary>
/// Gets up case table.
/// </summary>
/// <returns></returns>
public ExFatUpCaseTable GetUpCaseTable()
{
if (_upCaseTable == null)
{
_upCaseTable = new ExFatUpCaseTable();
var upCaseTableEntry = FindRootDirectoryEntries <UpCaseTableExFatDirectoryEntry>().FirstOrDefault();
if (upCaseTableEntry != null)
{
using (var upCaseTableStream = OpenDataStream(upCaseTableEntry.DataDescriptor, FileAccess.Read))
_upCaseTable.Read(upCaseTableStream);
}
else
{
_upCaseTable.SetDefault();
}
}
return(_upCaseTable);
}
private static void CreateUpCaseTable(ExFatPartition partition, Stream directoryStream)
{
var upCaseTable = new ExFatUpCaseTable();
upCaseTable.SetDefault();
partition._upCaseTable = upCaseTable;
var upCaseTableDataDescriptor = new DataDescriptor(0, false, long.MaxValue, long.MaxValue);
long length;
UInt32 checksum;
using (var upCaseStream = partition.OpenClusterStream(upCaseTableDataDescriptor, FileAccess.ReadWrite, d => upCaseTableDataDescriptor = d))
{
checksum = upCaseTable.Write(upCaseStream);
length = upCaseStream.Position;
}
var upCaseTableEntry = new UpCaseTableExFatDirectoryEntry(new Buffer(new byte[32]));
upCaseTableEntry.EntryType.Value = ExFatDirectoryEntryType.UpCaseTable | ExFatDirectoryEntryType.InUse;
upCaseTableEntry.TableChecksum.Value = checksum;
upCaseTableEntry.FirstCluster.Value = (uint)upCaseTableDataDescriptor.FirstCluster.Value;
upCaseTableEntry.DataLength.Value = (ulong)length;
upCaseTableEntry.Write(directoryStream);
}
