/// <summary>
/// Creates a new PulsarDirectory Object
/// </summary>
/// <param name="p">The partition to use</param>
/// <param name="bn">The block number we want to use</param>
/// <param name="pa">The path of the new directory</param>
public PulsarDirectory(Partition p, ulong bn, String pa)
{
_Path = pa;
part = p;
_StartBlock = PulsarFSBlock.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;
PulsarFSBlock.Write(p, _StartBlock);
}
if (!_StartBlock.Used)
{
_StartBlock.Used = true;
String n = "New Directory";
if (pa == PulsarFileSystem.separator)
{
_Path = "";
n = pa;
}
CreateEntry(part, _StartBlock, n);
}
}
/// <summary>
/// Gets the last PulsarFSBlock of the directory
/// </summary>
private PulsarFSBlock GetBlockToEdit()
{
PulsarFSBlock ret = _StartBlock;
while (ret.NextBlock != 0)
{
ret = PulsarFSBlock.Read(_StartBlock.Partition, _StartBlock.NextBlock);
}
if (ret.BlockNumber == _StartBlock.BlockNumber)
{
ret = PulsarFSBlock.GetFreeBlock(part);
ret.Used = true;
ret.ContentSize = 0;
ret.NextBlock = 0;
_StartBlock.NextBlock = ret.BlockNumber;
PulsarFSBlock.Write(part, _StartBlock);
PulsarFSBlock.Write(part, ret);
}
if (part.NewBlockArray(1).Length - ret.ContentSize < 12)
{
PulsarFSBlock b = PulsarFSBlock.GetFreeBlock(part);
if (b == null)
{
return(null);
}
ret.NextBlock = b.BlockNumber;
PulsarFSBlock.Write(part, ret);
b.Used = true;
ret = b;
}
return(ret);
}
/// <summary>
/// Gets all PulsarEntries contained in this PulsarDirectory
/// </summary>
public PulsarEntry[] GetEntries()
{
PulsarFSBlock curb = _StartBlock;
List <PulsarEntry> d = new List <PulsarEntry>();
while (curb.NextBlock != 0)
{
int index = 0;
curb = PulsarFSBlock.Read(_StartBlock.Partition, _StartBlock.NextBlock);
while (index < curb.ContentSize)
{
ulong a = BitConverter.ToUInt64(curb.Content, index);
index += 8;
uint sep = BitConverter.ToUInt32(curb.Content, index);
index += 4;
if (sep == 1)
{
d.Add(new PulsarDirectory(part, a, PulsarFileSystem.CombineDir(_Path, Name)));
}
else if (sep == 2)
{
d.Add(new PulsarFile(part, a, PulsarFileSystem.CombineDir(_Path, Name)));
}
}
}
return(d.ToArray());
}
public static void ClearBlocks(PulsarFSBlock StartBlock)
{
PulsarFSBlock b = StartBlock;
while (b.NextBlock != 0)
{
b = PulsarFSBlock.Read(b.Partition, b.NextBlock);
b.Used = false;
PulsarFSBlock.Write(mFS.Partition, b);
}
}
/// <summary>
/// Creates a new PulsarFile Object
/// </summary>
/// <param name="p">The partition to use</param>
/// <param name="bn">The block number we want to use</param>
/// <param name="pa">The path of the new directory</param>
public PulsarFile(Partition p, ulong bn, String pa)
{
_Path = pa;
part = p;
_StartBlock = PulsarFSBlock.Read(p, bn);
if (!_StartBlock.Used)
{
_StartBlock.Used = true;
String n = "New File";
CreateEntry(part, _StartBlock, n);
}
}
/// <summary>
/// Permits to remove a PulsarFSBlock by passing it
/// </summary>
/// <param name="PulsarDirectory">The PulsarFSBlock to remove</param>
private void DeleteBlock(PulsarFSBlock PulsarFSBlock)
{
PulsarFSBlock curb = _StartBlock;
while (curb.NextBlock != 0)
{
int index = 0;
bool found = false;
List <Byte> cont = new List <Byte>();
curb = PulsarFSBlock.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 == PulsarFSBlock.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;
PulsarFSBlock.Write(part, curb);
}
}
}
/// <summary>
/// Return's all the bytes contained in the file
/// </summary>
public Byte[] ReadAllBytes()
{
if (_StartBlock.NextBlock == 0)
{
return(new Byte[0]);
}
PulsarFSBlock b = _StartBlock;
List <Byte> lret = new List <Byte>();
while (b.NextBlock != 0)
{
b = PulsarFSBlock.Read(b.Partition, b.NextBlock);
for (int i = 0; i < b.ContentSize; i++)
{
lret.Add(b.Content[i]);
}
}
EditEntryInfo(EntryInfoPosition.DateTimeLastAccess, Environment.DateTime.Now.TimeStamp);
return(lret.ToArray());
}