/// <summary>
/// "Инициализирует" файловую систему
/// </summary>
/// <param name="hardDriverSize">размер диска в байтах</param>
public FileSystem(int hardDriverSize)
{
HardDriverSize = hardDriverSize;
ClusterSize = 4096;
FAT = new FAT32(HardDriverSize / 4096);
directoriesAndFiles = new object[FAT.TableSize];
//
// Создаем корневой каталог
//
int clusterForRoot = FAT.GetNextFreeBlock();
Attributes rootAttributes = new Attributes(false, false, true, false, true, false);
RootDirectoryCatalog = new CatalogEntry(rootAttributes, ClusterSize / 32, clusterForRoot, "\\", "");
directoriesAndFiles[clusterForRoot] = new Directory(RootDirectoryCatalog);
CurrentDirectory = RootDirectoryCatalog;
CreateDotFile dotFile = new CreateDotFile(this, clusterForRoot);
dotFile.Execute();
}
/// <summary>
/// Создает каталог
/// </summary>
/// <returns></returns>
internal override bool Execute()
{
Directory currentDirectory;
int clusterForDirectory = FileSystem.FAT.GetNextFreeBlock();
if (clusterForDirectory != GlobalConstants.EOC)
{
if (FileSystem.directoriesAndFiles[FileSystem.CurrentDirectory.FirstBlockNumber] == null)
{
return(false);
}
currentDirectory = (Directory)FileSystem.directoriesAndFiles[FileSystem.CurrentDirectory.FirstBlockNumber];
CatalogEntry catalogEntry = new CatalogEntry(attributes, FileSystem.ClusterSize / 32, clusterForDirectory, name, "");
if (!currentDirectory.IsThereFreeSpace(currentDirectory.LastUsedClusterNumber))
{
int cluster = FileSystem.FAT.GetNextFreeBlock(currentDirectory.FirstClusterNumber);
if (cluster == GlobalConstants.EOC)
{
return(false);
}
currentDirectory.Add(FileSystem.ClusterSize / 32, cluster); // потому что размер каталожной записи типо 32 байта
}
currentDirectory.AddEntry(catalogEntry);
//
// ниже костыль
//
Directory directoryToAdd = new Directory(catalogEntry);
//
// выше костыль
//
//directoryToAdd.Add(FileSystem.ClusterSize / 32, clusterForDirectory);
FileSystem.directoriesAndFiles[clusterForDirectory] = directoryToAdd;
CreateDotFile dotFile = new CreateDotFile(FileSystem, clusterForDirectory);
CreateDoubleDotFile doubleDotFile = new CreateDoubleDotFile(FileSystem, clusterForDirectory);
dotFile.Execute();
doubleDotFile.Execute();
FileSystem.directoriesAndFiles[clusterForDirectory] = directoryToAdd;
return(true);
}
return(false);
}
