/// <summary>
/// Initializes a new FAT directory.
/// </summary>
/// <param name="aFileSystem">The FAT file system to which the directory belongs.</param>
/// <param name="parent">The FAT directory which is the parent of the directory. Null for the root directory.</param>
/// <param name="aName">The name of the directory.</param>
/// <param name="aFirstCluster">The first cluster number of the directory.</param>
public FATDirectory(FATFileSystem aFileSystem, FATDirectory parent, FOS_System.String aName, UInt32 aFirstCluster)
: base(aFileSystem, parent, aName)
{
_theFile = new FATFile(aFileSystem, parent, Name, 0, aFirstCluster)
{
IsDirectoryFile = true
};
}
/// <summary>
/// Initializes a new FAT file stream for the specified file.
/// </summary>
/// <param name="aFile">The file to create a stream to.</param>
/// <param name="ignoreFileSize">Whether to ignore the file size or not. True for directories.</param>
public FATFileStream(FATFile aFile, bool ignoreFileSize)
: base(aFile)
{
IgnoreFileSize = ignoreFileSize;
if (TheFATFile == null)
{
ExceptionMethods.Throw(new Exception("Could not create FATFileStream. Specified file object was null!"));
}
GetClusterNums();
}
/// <summary>
/// Creates a new file within the file system.
/// </summary>
/// <param name="name">The name of the file to create.</param>
/// <param name="parent">The parent directory of the new file.</param>
/// <returns>The new file listing.</returns>
public override File NewFile(String name, Directory parent)
{
if (FATType != FATTypeEnum.FAT32)
{
ExceptionMethods.Throw(new Exceptions.NotSupportedException("FATFileSystem.NewFile for non-FAT32 not supported!"));
}
if (parent == null)
{
ExceptionMethods.Throw(new Exceptions.NullReferenceException());
}
if (!(parent is FATDirectory))
{
ExceptionMethods.Throw(new Exceptions.NotSupportedException("FATFileSystem.NewFile parent directory must be of type FATDirectory!"));
}
//BasicConsole.WriteLine("Getting directory listings...");
List listings = null;
if (parent == null)
{
listings = GetRootDirectoryListings();
}
else
{
listings = parent.GetListings();
}
//BasicConsole.WriteLine("Got directory listings. Converting name...");
name = name.ToUpper();
//BasicConsole.WriteLine("Converted name. Checking if file exists...");
bool exists = Directory.ListingExists(name, listings);
//BasicConsole.WriteLine("Check done.");
if (!exists)
{
//BasicConsole.WriteLine("Getting next free cluster...");
UInt32 freeCluster = GetNextFreeCluster(2);
//BasicConsole.WriteLine("Got next free. Clearing cluster...");
WriteCluster(freeCluster, null);
//BasicConsole.WriteLine("Cleared. Setting FAT entry...");
SetFATEntryAndSave(freeCluster, GetFATEntryEOFValue(FATType));
//BasicConsole.WriteLine("Set FAT entry. Creating new file...");
File newFile = new FATFile(this, (FATDirectory)parent, name, 0, freeCluster);
//BasicConsole.WriteLine("File created. Adding listing to parent...");
if (parent == null)
{
listings.Add(newFile);
//BasicConsole.WriteLine("Added. Writing listings...");
_rootDirectoryFAT32.WriteListings();
}
else
{
parent.AddListing(newFile);
//BasicConsole.WriteLine("Added. Writing listings...");
parent.WriteListings();
}
//BasicConsole.WriteLine("Written listings.");
return newFile;
}
else
{
ExceptionMethods.Throw(new IOException("Listing (directory/file) with specified name already exists!"));
}
return null;
}
/// <summary>
/// Initializes a new FAT directory.
/// </summary>
/// <param name="aFileSystem">The FAT file system to which the directory belongs.</param>
/// <param name="parent">The FAT directory which is the parent of the directory. Null for the root directory.</param>
/// <param name="aName">The name of the directory.</param>
/// <param name="aFirstCluster">The first cluster number of the directory.</param>
public FATDirectory(FATFileSystem aFileSystem, FATDirectory parent, FOS_System.String aName, UInt32 aFirstCluster)
: base(aFileSystem, parent, aName)
{
_theFile = new FATFile(aFileSystem, parent, Name, 0, aFirstCluster) { IsDirectoryFile = true };
}