private TOC GetTOCForHeader(FileHeader fileHeader, string localizationId)
{
TOC toc = GetTOCById(localizationId);
if (toc.ContainsFileHeader(fileHeader.Id))
{
throw new Exception("That path exists already!");
}
while (toc.Next != 0 && toc.FileHeaders.Count == Settings.HeadersNumber)
{
if (toc.ContainsFileHeader(fileHeader.Id))
{
throw new Exception("That path exists already!");
}
toc = GetTOCByBlockNumber(toc.Next);
}
if (toc.FileHeaders.Count == Settings.HeadersNumber)
{
WriteNewTOC();
Position = (toc.BlockNumber + 1) * Settings.BlockSize - 4;
Write(BitConverter.GetBytes(BlockNumber - 1), 0, 4);
toc = new TOC()
{
BlockNumber = BlockNumber - 1
};
}
return(toc);
}
public List <TOC> GetTOCs()
{
Stack <int> blockNumber = new Stack <int>();
List <TOC> source = new List <TOC>();
blockNumber.Push(0);
while (blockNumber.Count > 0)
{
TOC tocByBlockNumber = GetTOCByBlockNumber(blockNumber.Pop());
if (tocByBlockNumber != null)
{
source.Add(tocByBlockNumber);
foreach (FileHeader fileHeader in tocByBlockNumber.FileHeaders)
{
blockNumber.Push(fileHeader.BlockNumber);
}
while (tocByBlockNumber.Next > 0)
{
tocByBlockNumber = GetTOCByBlockNumber(tocByBlockNumber.Next);
foreach (FileHeader fileHeader in tocByBlockNumber.FileHeaders)
{
blockNumber.Push(fileHeader.BlockNumber);
}
source.Add(tocByBlockNumber);
}
}
}
return(source.OrderBy <TOC, int>((Func <TOC, int>)(x => x.BlockNumber)).ToList <TOC>());
}
private IBlock GetBlockById(string id)
{
if (id == Settings.RootName)
{
return(GetTOCByBlockNumber(1));
}
Stack <int> intStack = new Stack <int>();
intStack.Push(1);
while (intStack.Count > 0)
{
TOC tocByBlockNumber = GetTOCByBlockNumber(intStack.Pop());
if (tocByBlockNumber != null)
{
foreach (FileHeader fileHeader in tocByBlockNumber.FileHeaders)
{
if (fileHeader.Id == id)
{
return(GetBlockByNumber(fileHeader.BlockNumber));
}
intStack.Push(fileHeader.BlockNumber);
}
while (tocByBlockNumber.Next > 0)
{
intStack.Push(tocByBlockNumber.Next);
tocByBlockNumber = GetTOCByBlockNumber(tocByBlockNumber.Next);
}
}
}
return(null);
}
public List <FileHeader> GetDirectoryById(string localizationId)
{
TOC toc = this.GetTOCById(localizationId);
List <FileHeader> fileHeaders = toc.FileHeaders;
while ((uint)toc.Next > 0U)
{
toc = this.GetTOCByBlockNumber(toc.Next);
if (toc.GetType() == typeof(TOC))
{
fileHeaders.AddRange((IEnumerable <FileHeader>)toc.FileHeaders);
}
}
return(fileHeaders.OrderBy <FileHeader, string>((Func <FileHeader, string>)(x => x.Name)).ToList <FileHeader>());
}
public string CreateDirectory(string name, string localizationId)
{
try
{
var fileHeader = headerFactory.CreateDirectory(name);
TOC tocForHeader = GetTOCForHeader(fileHeader, localizationId);
fileHeader.BlockNumber = BlockNumber;
WriteNewTOC();
tocForHeader.AddFileHeader(fileHeader);
Position = (tocForHeader.BlockNumber * Settings.BlockSize);
Write(blockFactory.CreateBlock(tocForHeader), 0, Settings.BlockSize);
}
catch (Exception ex)
{
return(ex.Message);
}
return("The directory was created successfully");
}
private TOC GetTOCUpper(string id)
{
if (id == Settings.RootName)
{
return(this.GetTOCByBlockNumber(0));
}
TOC toc1 = (TOC)null;
List <TOC> toCs = this.GetTOCs();
foreach (TOC toc2 in toCs)
{
foreach (FileHeader fileHeader in toc2.FileHeaders)
{
if (fileHeader.Id == id)
{
toc1 = toc2;
break;
}
}
if (toc1 != null)
{
break;
}
}
bool flag = true;
while (flag)
{
flag = false;
foreach (TOC toc2 in toCs)
{
if (toc2.Next == toc1.BlockNumber && (uint)toc1.BlockNumber > 0U)
{
flag = true;
toc1 = toc2;
break;
}
}
}
return(toc1);
}
public string CreateFile(Stream stream, string name, string localizationId)
{
var fileHeader = headerFactory.CreateFile(name);
TOC tocForHeader = GetTOCForHeader(fileHeader, localizationId);
fileHeader.BlockNumber = BlockNumber;
stream.Position = 0;
Seek(0, SeekOrigin.End);
byte[] buffer = new byte[Settings.BlockSize - 8];
for (int count = stream.Read(buffer, 0, Settings.BlockSize - 8); count > 0; count = stream.Read(buffer, 0, Settings.BlockSize - 8))
{
int blockNumber = BlockNumber + 1;
if (count < Settings.BlockSize - 8)
{
blockNumber = 0;
}
Write(SystemFile.ToBytes(buffer, count, blockNumber), 0, Settings.BlockSize);
buffer = new byte[Settings.BlockSize - 8];
}
tocForHeader.AddFileHeader(fileHeader);
Position = (long)(tocForHeader.BlockNumber * Settings.BlockSize + 4);
Write(blockFactory.CreateBlock(tocForHeader), 0, Settings.BlockSize);
return("The file was uploaded successfully");
}
