Linux script input parameters generator - recommendation?

I'm looking for a tool to generate a script for handling input parameters.

I guess it would be best if the script would generate a file that I will later include (source) in my main script. This way, if the parameters requirements are changed, the generator can still be used without erasing the content of the main script.

It would also be nice if the tool would generate a help section with all the input parameters possibilities.

Any k开发者_开发百科nowledge of such a tool?

Update: Looking for a (ba)sh script generatorr, though I don't really care - as long as I can interact with it from a script (sh) file.