added axis and dir checks

worldeditadditions/lib/selection/selection.lua

@@ -46,4 +46,23 @@ function selection.clear_points(name)
 	worldedit.player_notify(name, "Region cleared")
 end
 
+--- Checks if a string is a valid axis.
+-- @param	str	string	String to check (be sure to remove any + or -).
+-- @param	hv	bool	Include "h" (general horizontal) and "v" (general vertical).
+-- @return	bool	If string is a valid axis then true.
+function selection.check_axis(str,hv)
+	if hv then
+		return (str == "x" or str == "y" or str == "z" or str == "h" or str == "v")
+	else
+		return (str == "x" or str == "y" or str == "z")
+	end
+end
+
+--- Checks if a string is a valid dir.
+-- @param	str	string	String to check (be sure to remove any + or -).
+-- @return	bool	If string is a valid dir then true.
+function selection.check_dir(str)
+	return (str == "front" or str == "back" or str == "left" or str == "right" or str == "up" or str == "down")
+end
+
 return selection