public HarddiskDirectory GetSubdirectory(VolumePath path, bool create = false)
{
if (Path.Equals(path))
{
return(this);
}
if (!Path.IsParent(path))
{
throw new KOSException("This directory does not contain path: " + path.ToString());
}
string subdirectory = path.Segments[Path.Segments.Count];
if (!items.ContainsKey(subdirectory))
{
if (create)
{
CreateDirectory(subdirectory);
}
else
{
return(null);
}
}
HarddiskDirectory directory = items[subdirectory] as HarddiskDirectory;
if (directory == null)
{
throw new KOSPersistenceException("Directory does not exist: " + path.ToString());
}
return(directory.GetSubdirectory(path, create));
}
public string GetArchivePath(VolumePath path)
{
if (path.PointsOutside)
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
string mergedPath = ArchiveFolder;
foreach (string segment in path.Segments)
{
mergedPath = Path.Combine(mergedPath, segment);
}
string fullPath = Path.GetFullPath(mergedPath);
if (!fullPath.StartsWith(ArchiveFolder, StringComparison.Ordinal))
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
return(fullPath);
}
public string GetArchivePath(VolumePath path)
{
if (path.PointsOutside)
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
string mergedPath = ArchiveFolder;
foreach (string segment in path.Segments)
{
mergedPath = Path.Combine(mergedPath, segment);
}
return(mergedPath);
}
public string GetArchivePath(VolumePath path)
{
if (path.PointsOutside)
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
string mergedPath = ArchiveFolder;
foreach (string segment in path.Segments)
{
mergedPath = Path.Combine(mergedPath, segment);
}
return mergedPath;
}
public override VolumeFile CreateFile(VolumePath path)
{
if (path.Depth == 0)
{
throw new KOSPersistenceException("Can't create a file over root directory");
}
string archivePath = GetArchivePath(path);
if (File.Exists(archivePath))
{
throw new KOSPersistenceException("Already exists: " + path);
}
try
{
Directory.CreateDirectory(GetArchivePath(path.GetParent()));
}
catch (IOException)
{
throw new KOSPersistenceException("Parent directory for path does not exist: " + path.ToString());
}
try
{
File.Create(archivePath).Dispose();
}
catch (UnauthorizedAccessException)
{
throw new KOSPersistenceException("Could not create file: " + path);
}
return Open(path) as VolumeFile;
}
public override VolumeFile CreateFile(VolumePath path)
{
if (path.Depth == 0)
{
throw new KOSPersistenceException("Can't create a file over root directory");
}
string archivePath = GetArchivePath(path);
if (File.Exists(archivePath))
{
throw new KOSPersistenceException("Already exists: " + path);
}
try
{
Directory.CreateDirectory(GetArchivePath(path.GetParent()));
}
catch (IOException)
{
throw new KOSPersistenceException("Parent directory for path does not exist: " + path.ToString());
}
try
{
File.Create(archivePath).Dispose();
}
catch (UnauthorizedAccessException)
{
throw new KOSPersistenceException("Could not create file: " + path);
}
return(Open(path) as VolumeFile);
}
