private FSBlock GetBlockToEdit()
{
FSBlock ret = _StartBlock;
while (ret.NextBlock != 0)
{
ret = FSBlock.Read(_StartBlock.Partition, _StartBlock.NextBlock);
}
if (ret.BlockNumber == _StartBlock.BlockNumber)
{
ret = FSBlock.GetFreeBlock(part);
ret.Used = true;
ret.ContentSize = 0;
ret.NextBlock = 0;
_StartBlock.NextBlock = ret.BlockNumber;
FSBlock.Write(part, _StartBlock);
FSBlock.Write(part, ret);
}
if (part.NewBlockArray(1).Length - ret.ContentSize < 12)
{
FSBlock b = FSBlock.GetFreeBlock(part);
if (b == null)
{
return(null);
}
ret.NextBlock = b.BlockNumber;
FSBlock.Write(part, ret);
b.Used = true;
ret = b;
}
return(ret);
}
public PulsarDirectory(Partition p, ulong bn, String pa)
{
_Path = pa;
part = p;
_StartBlock = FSBlock.Read(p, bn);
if (bn == 1 && pa == "/" && _StartBlock.Content[0] != '/')
{
Char[] nm = "/".ToCharArray();
for (int i = 0; i < nm.Length; i++)
{
_StartBlock.Content[i] = (byte)nm[i];
}
_StartBlock.Used = true;
_StartBlock.NextBlock = 0;
FSBlock.Write(p, _StartBlock);
}
if (!_StartBlock.Used)
{
_StartBlock.Used = true;
String n = "New Directory";
if (pa == FileSystem.separator)
{
_Path = "";
n = pa;
}
CreateEntry(part, _StartBlock, n);
}
}
public static void ClearBlocks(FSBlock StartBlock)
{
FSBlock b = StartBlock;
while (b.NextBlock != 0)
{
b = FSBlock.Read(b.Partition, b.NextBlock);
b.Used = false;
FSBlock.Write(mFS.Partition, b);
}
}
private void DeleteBlock(FSBlock FSBlock)
{
FSBlock curb = _StartBlock;
while (curb.NextBlock != 0)
{
int index = 0;
bool found = false;
List <Byte> cont = new List <Byte>();
curb = FSBlock.Read(_StartBlock.Partition, _StartBlock.NextBlock);
while (index < curb.ContentSize)
{
ulong a = BitConverter.ToUInt64(curb.Content, index);
Byte[] app = BitConverter.GetBytes(a);
for (int i = 0; i < app.Length; i++)
{
cont.Add(app[i]);
}
index += 8;
uint sep = BitConverter.ToUInt32(curb.Content, index);
index += 4;
if (a == FSBlock.BlockNumber)
{
app = BitConverter.GetBytes((uint)0);
for (int i = 0; i < app.Length; i++)
{
cont.Add(app[i]);
}
found = true;
}
else
{
app = BitConverter.GetBytes(sep);
for (int i = 0; i < app.Length; i++)
{
cont.Add(app[i]);
}
}
}
if (found)
{
curb.Content = cont.ToArray();
curb.ContentSize = (uint)cont.Count;
FSBlock.Write(part, curb);
}
}
}
public void AddDirectory(String Name)
{
Entry[] dirs = GetEntries();
for (int i = 0; i < dirs.Length; i++)
{
if (dirs[i].Name == Name)
{
Helper.WriteLine("Entry with same Name already exists!");
return;
}
}
FSBlock curb = GetBlockToEdit();
FSBlock newdirb = CreateEntry(part, Name);
BitConverter.GetBytes(newdirb.BlockNumber).CopyTo(curb.Content, curb.ContentSize);
BitConverter.GetBytes((uint)1).CopyTo(curb.Content, curb.ContentSize + 8);
curb.ContentSize += 12;
FSBlock.Write(part, curb);
EditEntryInfo(EntryInfoPosition.DateTimeModified, Environment.DateTime.Now.TimeStamp);
EditEntryInfo(EntryInfoPosition.DateTimeLastAccess, Environment.DateTime.Now.TimeStamp);
}
protected static FSBlock CreateEntry(Partition p, FSBlock b, String n)
{
if (b != null && ((!Utils.StringContains(n, InvalidChars)) || b.BlockNumber == 0))
{
b.Used = true;
b.NextBlock = 0;
b.TotalSize = 0;
Char[] nm = n.ToCharArray();
for (int i = 0; i < nm.Length; i++)
{
b.Content[i] = (byte)nm[i];
}
if (b.BlockNumber != 0)
{
Utils.CopyByteToByte(BitConverter.GetBytes(Environment.DateTime.Now.TimeStamp), 0, b.Content, (int)MaxNameSize + (int)EntryInfoPosition.DateTimeCreated, 8, false);
}
b.Content[nm.Length] = 0;
b.ContentSize = (uint)nm.Length;
FSBlock.Write(p, b);
return(b);
}
return(null);
}
public void WriteAllBytes(Byte[] Data)
{
if (_StartBlock.NextBlock != 0)
{
FileSystem.ClearBlocks(_StartBlock);
_StartBlock.NextBlock = 0;
FSBlock.Write(FileSystem.mFS.Partition, _StartBlock);
}
int index = 0;
FSBlock curb = FSBlock.GetFreeBlock(FileSystem.mFS.Partition);
_StartBlock.NextBlock = curb.BlockNumber;
FSBlock.Write(part, _StartBlock);
do
{
Byte[] arr = new Byte[FSBlock.MaxBlockContentSize];
index = Utils.CopyByteToByte(Data, index, arr, 0, arr.Length);
curb.Used = true;
curb.Content = arr;
if (index != Data.Length)
{
FSBlock b = FSBlock.GetFreeBlock(FileSystem.mFS.Partition);
curb.NextBlock = b.BlockNumber;
curb.ContentSize = (uint)arr.Length;
FSBlock.Write(FileSystem.mFS.Partition, curb);
curb = b;
}
else
{
curb.ContentSize = (uint)(Data.Length % arr.Length);
FSBlock.Write(FileSystem.mFS.Partition, curb);
}
}while(index != Data.Length);
EditEntryInfo(EntryInfoPosition.DateTimeModified, Environment.DateTime.Now.TimeStamp);
EditEntryInfo(EntryInfoPosition.DateTimeLastAccess, Environment.DateTime.Now.TimeStamp);
}
