public class FsTools
{
	public static int makedir( string dir, int depth )
	{
		int rc = -1;
		if( Directory.Exists( dir ) )
		{
			rc = 0;
		}
		else if( depth >= 0 )
		{
			rc = makedir( Path.GetDirectoryName( dir ), depth - 1 );
			if( rc >= 0 )
			{
				Directory.CreateDirectory( dir );
				rc++;
			}
		}
		return rc;
	}
}