public ConcatenationDirectory(ConcatenationFileSystem fs, IDirectory parentDirectory, OpenDirectoryMode mode)
{
ParentFileSystem = fs;
ParentDirectory = parentDirectory;
Mode = mode;
FullPath = parentDirectory.FullPath;
}
private bool IsConcatenationFile(DirectoryEntry entry)
{
#if CROSS_PLATFORM
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return(ConcatenationFileSystem.HasConcatenationFileAttribute(entry.Attributes));
}
else
{
return(ParentFileSystem.IsConcatenationFile(entry.FullPath));
}
#else
return(ConcatenationFileSystem.HasConcatenationFileAttribute(entry.Attributes));
#endif
}
public int GetEntryCount()
{
int count = 0;
foreach (DirectoryEntry entry in ParentDirectory.Read())
{
bool isSplit = ConcatenationFileSystem.HasConcatenationFileAttribute(entry.Attributes);
if (CanReturnEntry(entry, isSplit))
{
count++;
}
}
return(count);
}
public override void SetSize(long size)
{
long currentSize = GetSize();
if (currentSize == size)
{
return;
}
int currentSubFileCount = QuerySubFileCount(currentSize, SubFileSize);
int newSubFileCount = QuerySubFileCount(size, SubFileSize);
if (size > currentSize)
{
IFile currentLastSubFile = Sources[currentSubFileCount - 1];
long newSubFileSize = QuerySubFileSize(currentSubFileCount - 1, size, SubFileSize);
currentLastSubFile.SetSize(newSubFileSize);
for (int i = currentSubFileCount; i < newSubFileCount; i++)
{
string newSubFilePath = ConcatenationFileSystem.GetSubFilePath(FilePath, i);
newSubFileSize = QuerySubFileSize(i, size, SubFileSize);
BaseFileSystem.CreateFile(newSubFilePath, newSubFileSize, CreateFileOptions.None);
Sources.Add(BaseFileSystem.OpenFile(newSubFilePath, Mode));
}
}
else
{
for (int i = currentSubFileCount - 1; i > newSubFileCount - 1; i--)
{
Sources[i].Dispose();
Sources.RemoveAt(i);
string subFilePath = ConcatenationFileSystem.GetSubFilePath(FilePath, i);
BaseFileSystem.DeleteFile(subFilePath);
}
long newLastFileSize = QuerySubFileSize(newSubFileCount - 1, size, SubFileSize);
Sources[newSubFileCount - 1].SetSize(newLastFileSize);
}
}
public IEnumerable <DirectoryEntry> Read()
{
foreach (DirectoryEntry entry in ParentDirectory.Read())
{
bool isSplit = ConcatenationFileSystem.HasConcatenationFileAttribute(entry.Attributes);
if (!CanReturnEntry(entry, isSplit))
{
continue;
}
if (isSplit)
{
entry.Type = DirectoryEntryType.File;
entry.Size = ParentFileSystem.GetConcatenationFileSize(entry.FullPath);
entry.Attributes = NxFileAttributes.None;
}
yield return(entry);
}
}
