private void ReadDirectory(int clusterStart, FAT16Directory dir)
{
int Cluster = clusterStart;
while (Cluster != -1)
{
DiskStream.Seek(DiskBootSector.SectorOffsetForCluster(Cluster), SeekOrigin.Begin);
byte[] dirCluster = new byte[DiskBootSector.GetBytesPerCluster()];
DiskStream.Read(dirCluster, 0, DiskBootSector.GetBytesPerCluster());
MemoryStream MS = new MemoryStream(dirCluster);
ParseDirectoryCluster(dir, MS);
Cluster = FAT_TABLE.nextClusterInChain(Cluster);
}
dir.ParseAllEntries();
numeroDeArchivosLabel.Text = dir.NumeroDeArchivos().ToString();
DirectorioActual = dir.GetClusterStart();
DirectorioAnterior = dir.GetParentCluster();
UpdateFileListView(dir);
}
private void UpdateFileListView(FAT16Directory directory)
{
FileListView.Items.Clear();
foreach (FAT16DirEntry entry in directory.GetEntries())
{
if (!entry.ignoreEntry)
{
FileListView.Items.Add(ListViewFAT16Entry.FactoryMethod(entry));
}
}
if (DirectorioAnterior == -1)
{
previosFolderButton.Enabled = false;
}
else
{
previosFolderButton.Enabled = true;
}
}
private void ReadRootDirectory()
{
//Vamos a leer el Root Directory que empieza con el cluster #2
RootDirectory = new FAT16Directory(2);
ReadDirectory(RootDirectory.GetClusterStart(), RootDirectory);
DirectoryTree.SelectedNode = DirectoryTree.TopNode;
F32DirectoryTree = new FAT16DirectoryTree(DiskBootSector.GetVolumeLabel(), 2, new List <FAT16DirectoryTree>(), true);
foreach (FAT16DirEntry directory in RootDirectory.GetEntries())
{
if (directory.esDir() && !directory.ignoreEntry)
{
F32DirectoryTree.GetSubDirs().Add(new FAT16DirectoryTree(directory.NombreDeDir, directory.GetFirstCluster(), null, false));
}
}
DirActual = RootDirectory;
}
private void ParseDirectoryCluster(FAT16Directory dir, MemoryStream dirStream)
{
byte[] EntryByteBuffer = new byte[32];
bool LFNFlag = false;
while (dirStream.Read(EntryByteBuffer, 0, 32) > 0)
{
//0x00 y 0xE5 denotan que esa entrada esta libre
if (EntryByteBuffer[0] != 0x00)
{
if (EntryByteBuffer[11] == 0x0F)
{
//Entrada de directory LFN (Long File Name)
LFNFlag = true;
FAT16LFNEntry tempLFNEntry = new FAT16LFNEntry();
//Copiamos los datos de esa entrada de directory a una estructura LFN
tempLFNEntry.LDIR_Ord = EntryByteBuffer[0];
Array.Copy(EntryByteBuffer, 1, tempLFNEntry.LDIR_Name1, 0, 10);
tempLFNEntry.LDIR_ATTR = EntryByteBuffer[11];
tempLFNEntry.LDIR_Type = EntryByteBuffer[12];
tempLFNEntry.LDIR_Checksum = EntryByteBuffer[13];
Array.Copy(EntryByteBuffer, 14, tempLFNEntry.LDIR_Name2, 0, 12);
Array.Copy(EntryByteBuffer, 26, tempLFNEntry.LDIR_FstClustLO, 0, 2);
Array.Copy(EntryByteBuffer, 28, tempLFNEntry.LDIR_Name3, 0, 4);
TempLFNStack.Push(tempLFNEntry);
}
else
{
//Entrada de Directorio Normal
FAT16DirEntry tempDirEntry = new FAT16DirEntry();
if (EntryByteBuffer[0] == 0xE5)
{
tempDirEntry.ignoreEntry = true;
}
Array.Copy(EntryByteBuffer, 0, tempDirEntry.DIR_NAME, 0, 8);
Array.Copy(EntryByteBuffer, 8, tempDirEntry.DIR_EXT, 0, 3);
tempDirEntry.DIR_ATTR = EntryByteBuffer[11];
tempDirEntry.DIR_NTRES = EntryByteBuffer[12];
tempDirEntry.DIR_CrtTimeTenth = EntryByteBuffer[13];
Array.Copy(EntryByteBuffer, 14, tempDirEntry.DIR_CrtTime, 0, 2);
Array.Copy(EntryByteBuffer, 16, tempDirEntry.DIR_CrtDate, 0, 2);
Array.Copy(EntryByteBuffer, 18, tempDirEntry.DIR_LstAccDate, 0, 2);
Array.Copy(EntryByteBuffer, 20, tempDirEntry.DIR_FstClustHI, 0, 2);
Array.Copy(EntryByteBuffer, 22, tempDirEntry.DIR_WrtTime, 0, 2);
Array.Copy(EntryByteBuffer, 24, tempDirEntry.DIR_WrtDate, 0, 2);
Array.Copy(EntryByteBuffer, 26, tempDirEntry.DIR_FstClustLO, 0, 2);
Array.Copy(EntryByteBuffer, 28, tempDirEntry.DIR_FileSize, 0, 4);
//Clonar Stack de LFNs
if (LFNFlag && TempLFNStack.Count > 0)
{
tempDirEntry.ListaLFNEntries = new Stack <FAT16LFNEntry>(TempLFNStack);
}
if (TempLFNStack.Count > 0)
{
TempLFNStack.Clear();
}
//Agregar Entry a RootDirectory
dir.AddDirectory(tempDirEntry);
}
}
EntryByteBuffer = new byte[32];
}
//dir.ParseAllEntries();
}