/// <summary>
/// Get directories of local path in ZipFile.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public string[] GetDirectories(string path)
{
path = SanitizeFilename(path);
var dirs = m_Directories
.Select(dirSym => dirSym.ToString())
.Where(dir => dir.StartsWith(path));
if (dirs.IsEmpty())
{
throw new DirectoryNotFoundException();
}
var dirLevel = path.Count(c => c == '\\');
return(dirs
.Where(dir => dir.Count(c => c == '\\') == dirLevel + 1)
.ToArray());
}