Answer by nhouser9 for Flexible switch case syntax

You could use .split("") on the input string to split it into an array of strings where each element in the array was a word in your original string. In other words

"ADD C She".split("") = {"ADD", "C", "She"}

Once you have an array you can easily check element 1 for the command name with a switch statement, element 2 for the file name, and element 3 for the argument.