Question

Having C++ console utility.
The code inside parses the command line input and depending on input invokes particular function.

I’ve got a big ugly parsing routine that calls global functions.

I dislike this code and want to organize this code by design pattern application.

The flow is as following:

• process command line args;
• if error occurs then report about it and exit, otherwise continue;
• call specific routine depending on what parameters were specified;

What pattern will you advise for this case?

Thank you.

Answer 1

A common design pattern used for something like this is the Command pattern.