public XlsStream(XlsHeader hdr, uint startSector)
{
m_fileStream = hdr.FileStream;
m_fat = hdr.FAT;
m_hdr = hdr;
m_startSector = startSector;
}
public XlsStream(XlsHeader hdr, uint startSector, bool isMini, XlsRootDirectory rootDir)
{
m_fileStream = hdr.FileStream;
m_fat = hdr.FAT;
m_hdr = hdr;
m_startSector = startSector;
m_isMini = isMini;
m_rootDir = rootDir;
CalculateMiniFat(rootDir);
}
/// <summary>
/// Returns mini FAT table
/// </summary>
public XlsFat GetMiniFAT(XlsRootDirectory rootDir)
{
if (m_minifat != null)
return m_minifat;
// uint value;
// int miniSectorSize = MiniSectorSize;
List<uint> sectors = new List<uint>(MiniFatSectorCount);
//find the sector where the minifat starts
uint miniFatStartSector = BitConverter.ToUInt32(m_bytes, 0x3c);
sectors.Add(miniFatStartSector);
//lock (m_file)
//{
// //work out the file location of minifat then read each sector
// var miniFatStartOffset = (miniFatStartSector + 1)*SectorSize;
// var miniFatSize = MiniFatSectorCount * SectorSize;
// m_file.Seek(miniFatStartOffset, SeekOrigin.Begin);
// byte[] sectorBuff = new byte[SectorSize];
// for (var i = 0; i < MiniFatSectorCount; i += SectorSize)
// {
// m_file.Read(sectorBuff, 0, 4);
// var secId = BitConverter.ToUInt32(sectorBuff, 0);
// sectors.Add(secId);
// }
//}
m_minifat = new XlsFat(this, sectors, this.MiniSectorSize, true, rootDir);
return m_minifat;
}
public void CalculateMiniFat(XlsRootDirectory rootDir)
{
m_minifat = m_hdr.GetMiniFAT(rootDir);
}
public void CalculateMiniFat(XlsRootDirectory rootDir)
{
this.m_minifat = this.m_hdr.GetMiniFAT(rootDir);
}
