modification of the apps functions

[untereiner]

Hi, I am using h5pyd in a higher-level program. The logic implemented in the so called apps is interesting. I think they would be useful as functions that take parameters to be reused in other programms.
What do you think ?
Here a listed the two main modifications I think must be done:

• stateless: init cfg structure in the main function and put it as a parameter to the functions (PR put config object as parameter to functions #91)
• arguments: use the argparse package to handle arguments
• transform the logic implented in the main functions of the apps in functions that take parameters (the same as those from the argv) from a new main function.

I can contribute via a PR if you are interested.

[MRossol]

@untereiner I started to convert the hsload app to OOP which might be similar to what you are
suggesting. My efforts are attached if you want to use it in your PR (I'd also be happy to help/contribute).
hsload.py.zip

[jreadey]

@untereiner - this sounds like a great idea for refactoring the code in _apps. Looking forward to a PR.

One challenge we've had with the apps is that there are no test codes, so it's easy for regressions to slip in. If the refactor made it easier to write test cases, so much the better.

[untereiner]

Thank you both !
@MRossol I will look into your work!
@jreadey I will try to refactor in a way to simplify the test suite writing