public string GetArchivePath(VolumePath path)
{
if (path.PointsOutside)
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
string mergedPath = VolumeFolder;
foreach (string segment in path.Segments)
{
mergedPath = Path.Combine(mergedPath, segment);
}
string fullPath = Path.GetFullPath(mergedPath);
if (!fullPath.StartsWith(VolumeFolder, StringComparison.Ordinal))
{
throw new KOSInvalidPathException("Path refers to parent directory", path.ToString());
}
return(fullPath);
}
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);
}