private void Set109Fats(XLSHeader header, List <Sector> sectors, List <SectorIndex> index)
{
foreach (var item in header.Fats)
{
var i = item.ToInt();
if (!item.IsFree)
{
FatSector fat = new FatSector(sectors[i].ToStorage().ToStream());
index.AddRange(fat.Fats);
sectors[i] = fat;
}
}
}
private static void SetMiniFats(XLSHeader header, List <Sector> sectors, List <SectorIndex> index)
{
SectorIndex miniFatSect;
int miniFatCount;
for (miniFatSect = header.MiniFatStart, miniFatCount = 0;
!miniFatSect.IsEndOfChain && miniFatCount < header.MiniFatCount;
miniFatSect = index[miniFatSect.ToInt()], ++miniFatCount)
{
MiniFatSector miniFat = new MiniFatSector(sectors[miniFatSect.ToInt()].ToStorage().ToStream());
sectors[miniFatSect.ToInt()] = miniFat;
}
}
public XLSFile(Stream stream)
{
var header = new XLSHeader(stream);
var sectors = GetSectors(stream);
List <SectorIndex> index = new List <SectorIndex>((int)(MaxSectorIndex * header.FatCount));
Set109Fats(header, sectors, index);
SetRemainFats(header, sectors, index);
SetMiniFats(header, sectors, index);
var dirs = SetDirs(header, sectors, index);
m_Root = XLSDirectoryFactory.CreateEntry(dirs, sectors, index);
stream.Close();
}
private List <DirectorySectorData> SetDirs(XLSHeader header, List <Sector> sectors, List <SectorIndex> index)
{
var dirs = new List <DirectorySectorData>();
for (SectorIndex dirSect = header.DirStart;
!dirSect.IsEndOfChain;
dirSect = index[dirSect.ToInt()])
{
DirectorySector dir = new DirectorySector(sectors[dirSect.ToInt()].ToStorage().ToStream());
foreach (DirectorySectorData entry in dir.Entries)
{
dirs.Add(entry);
}
sectors[dirSect.ToInt()] = dir;
}
return(dirs);
}
private void SetRemainFats(XLSHeader header, List <Sector> sectors, List <SectorIndex> index)
{
int difCount;
SectorIndex difIndex;
for (difIndex = header.DifStart, difCount = 0;
!difIndex.IsEndOfChain && difCount < header.DifCount;
++difCount)
{
DifSector dif = new DifSector(sectors[difIndex.ToInt()].ToStorage().ToStream());
sectors[difIndex.ToInt()] = dif;
foreach (var item in dif.Fats.Where(i => !i.IsFree))
{
var i = item.ToInt();
FatSector fat = new FatSector(sectors[i].ToStorage().ToStream());
index.AddRange(fat.Fats);
sectors[i] = fat;
}
}
}
