private List <CompoundDocumentItem> ReadDirectories(List <byte[]> sectors, DocWriteInfo dwi)
{
var dir = new List <CompoundDocumentItem>();
var nextSector = _firstDirectorySectorLocation;
while (nextSector != END_OF_CHAIN)
{
ReadDirectory(sectors, nextSector, dir);
nextSector = dwi.FAT[nextSector];
}
return(dir);
}
private List <int> ReadFAT(List <byte[]> sectors, DocWriteInfo dwi)
{
var l = new List <int>();
foreach (var i in dwi.DIFAT)
{
var br = new BinaryReader(new MemoryStream(sectors[i]));
while (br.BaseStream.Position < _sectorSize)
{
var d = br.ReadInt32();
l.Add(d);
}
}
return(l);
}
private List <int> ReadMiniFAT(List <byte[]> sectors, DocWriteInfo dwi)
{
var l = new List <int>();
var nextSector = _firstMiniFATSectorLocation;
while (nextSector != END_OF_CHAIN)
{
var br = new BinaryReader(new MemoryStream(sectors[nextSector]));
while (br.BaseStream.Position < _sectorSize)
{
var d = br.ReadInt32();
l.Add(d);
}
nextSector = dwi.FAT[nextSector];
}
return(l);
}
private List <int> ReadFAT(List <byte[]> sectors, DocWriteInfo dwi)
{
var l = new List <int>();
foreach (var i in dwi.DIFAT)
{
using (var ms = RecyclableMemory.GetStream(sectors[i]))
{
var br = new BinaryReader(ms);
while (ms.Position < _sectorSize)
{
var d = br.ReadInt32();
l.Add(d);
}
}
}
return(l);
}
private void LoadDIFATSectors(DocWriteInfo dwi)
{
var nextSector = _firstDIFATSectorLocation;
while (nextSector > 0)
{
var brDI = new BinaryReader(new MemoryStream(_sectors[nextSector]));
var sect = -1;
while (brDI.BaseStream.Position < _sectorSize)
{
if (sect > 0)
{
dwi.DIFAT.Add(sect);
}
sect = brDI.ReadInt32();
}
nextSector = sect;
}
}
private List <int> ReadMiniFAT(List <byte[]> sectors, DocWriteInfo dwi)
{
var l = new List <int>();
var nextSector = _firstMiniFATSectorLocation;
while (nextSector != END_OF_CHAIN)
{
using (var ms = RecyclableMemory.GetStream(sectors[nextSector]))
{
var br = new BinaryReader(ms);
while (ms.Position < _sectorSize)
{
var d = br.ReadInt32();
l.Add(d);
}
nextSector = dwi.FAT[nextSector];
}
}
return(l);
}
private void LoadDIFATSectors(DocWriteInfo dwi)
{
var nextSector = _firstDIFATSectorLocation;
while (nextSector > 0)
{
using (var ms = RecyclableMemory.GetStream(_sectors[nextSector]))
{
var brDI = new BinaryReader(ms);
var sect = -1;
while (ms.Position < _sectorSize)
{
if (sect > 0)
{
dwi.DIFAT.Add(sect);
}
sect = brDI.ReadInt32();
}
nextSector = sect;
}
}
}
private void CreateFATStreams(CompoundDocumentItem item, BinaryWriter bw, BinaryWriter bwMini, DocWriteInfo dwi)
{
if (item.ObjectType != 5) //Root, we must have the miniStream first.
{
if (item.StreamSize > 0)
{
item.StreamSize = item.Stream.Length;
if (item.StreamSize < _miniStreamCutoffSize)
{
item.StartingSectorLocation = WriteStream(bwMini, dwi.miniFAT, item.Stream, miniFATSectorSize);
}
else
{
item.StartingSectorLocation = WriteStream(bw, dwi.FAT, item.Stream, FATSectorSizeV3);
}
}
}
foreach (var c in item.Children)
{
CreateFATStreams(c, bw, bwMini, dwi);
}
}
private void LoadMinSectors(ref DocWriteInfo dwi, List <CompoundDocumentItem> dir)
{
dwi.miniFAT = ReadMiniFAT(_sectors, dwi);
dir[0].Stream = GetStream(dir[0].StartingSectorLocation, dir[0].StreamSize, dwi.FAT, _sectors);
GetMiniSectors(dir[0].Stream);
}
internal void Read(BinaryReader br)
{
br.ReadBytes(8); //Read header
br.ReadBytes(16); //Header CLSID (16 bytes): Reserved and unused class ID that MUST be set to all zeroes (CLSID_NULL).
minorVersion = br.ReadInt16();
majorVersion = br.ReadInt16();
br.ReadInt16(); //Byte order
sectorShif = br.ReadInt16();
minSectorShift = br.ReadInt16();
_sectorSize = 1 << sectorShif;
_miniSectorSize = 1 << minSectorShift;
_sectorSizeInt = _sectorSize / 4;
br.ReadBytes(6); //Reserved
numberOfDirectorySector = br.ReadInt32();
_numberOfFATSectors = br.ReadInt32();
_firstDirectorySectorLocation = br.ReadInt32();
_transactionSignatureNumber = br.ReadInt32();
_miniStreamCutoffSize = br.ReadInt32();
_firstMiniFATSectorLocation = br.ReadInt32();
_numberofMiniFATSectors = br.ReadInt32();
_firstDIFATSectorLocation = br.ReadInt32();
_numberofDIFATSectors = br.ReadInt32();
var dwi = new DocWriteInfo()
{
DIFAT = new List <int>(), FAT = new List <int>(), miniFAT = new List <int>()
};
for (int i = 0; i < 109; i++)
{
var d = br.ReadInt32();
if (d >= 0)
{
dwi.DIFAT.Add(d);
}
}
LoadSectors(br);
if (_firstDIFATSectorLocation > 0)
{
LoadDIFATSectors(dwi);
}
dwi.FAT = ReadFAT(_sectors, dwi);
//var t = new BinaryWriter(new MemoryStream());
//foreach(var j in dwi.FAT)
//{
// t.Write(j);
//}
//File.WriteAllBytes(@"c:\temp\fat.bin", ((MemoryStream)t.BaseStream).ToArray());
var dir = ReadDirectories(_sectors, dwi);
//foreach(var d in dir)
//{
// File.AppendAllText(@"c:\temp\dirs.txt", d.Name + ";" + d.ChildID + ";" + d.LeftSibling + ";" + d.RightSibling + ";" + d.ColorFlag + "\r\n" );
//}
LoadMinSectors(ref dwi, dir);
foreach (var d in dir)
{
if (d.Stream == null && d.StreamSize > 0)
{
if (d.StreamSize < _miniStreamCutoffSize)
{
d.Stream = GetStream(d.StartingSectorLocation, d.StreamSize, dwi.miniFAT, _miniSectors);
}
else
{
d.Stream = GetStream(d.StartingSectorLocation, d.StreamSize, dwi.FAT, _sectors);
//File.WriteAllBytes(@"c:\temp\"+DateTime.Now.ToString("HHmmss")+".bin",d.Stream.ToArray());
}
}
}
AddChildTree(dir[0], dir);
}
internal void Read(BinaryReader br)
{
br.ReadBytes(8); //Read header
br.ReadBytes(16); //Header CLSID (16 bytes): Reserved and unused class ID that MUST be set to all zeroes (CLSID_NULL).
minorVersion = br.ReadInt16();
majorVersion = br.ReadInt16();
br.ReadInt16(); //Byte order
sectorShif = br.ReadInt16();
minSectorShift = br.ReadInt16();
_sectorSize = 1 << sectorShif;
_miniSectorSize = 1 << minSectorShift;
_sectorSizeInt = _sectorSize / 4;
br.ReadBytes(6); //Reserved
numberOfDirectorySector = br.ReadInt32();
_numberOfFATSectors = br.ReadInt32();
_firstDirectorySectorLocation = br.ReadInt32();
_transactionSignatureNumber = br.ReadInt32();
_miniStreamCutoffSize = br.ReadInt32();
_firstMiniFATSectorLocation = br.ReadInt32();
_numberofMiniFATSectors = br.ReadInt32();
_firstDIFATSectorLocation = br.ReadInt32();
_numberofDIFATSectors = br.ReadInt32();
var dwi = new DocWriteInfo()
{
DIFAT = new List <int>(), FAT = new List <int>(), miniFAT = new List <int>()
};
for (int i = 0; i < 109; i++)
{
var d = br.ReadInt32();
if (d >= 0)
{
dwi.DIFAT.Add(d);
}
}
LoadSectors(br);
if (_firstDIFATSectorLocation > 0)
{
LoadDIFATSectors(dwi);
}
dwi.FAT = ReadFAT(_sectors, dwi);
var dir = ReadDirectories(_sectors, dwi);
LoadMinSectors(ref dwi, dir);
foreach (var d in dir)
{
if (d.Stream == null && d.StreamSize > 0)
{
if (d.StreamSize < _miniStreamCutoffSize)
{
d.Stream = GetStream(d.StartingSectorLocation, d.StreamSize, dwi.miniFAT, _miniSectors);
}
else
{
d.Stream = GetStream(d.StartingSectorLocation, d.StreamSize, dwi.FAT, _sectors);
}
}
}
AddChildTree(dir[0], dir);
}
