Several fixes and improvements to get it working on telematics XSD and railml XSD's

[MathiasVDA]

Hello @dachafra @andimou @xuemduan

I'm working on converting the Telematics XSD files into RDF (ontology, shacl, skos). I was trying to get the published version of xsd2shacl working but it failed. So I forked the project and started working on the code until it gave a valid output. This PR contains the fixes needed to both produce valid output for the TAF_TSI xsd files and the railml infrastructure 3.3 xsd file. It's likely I will find other issues later but for now, this is a nice improvement.

My commit messages should be clear enough as to why the change was done. But feel free to ask any questions here in this PR.

[MathiasVDA]

@gatemezing
fyi

[dachafra]

Hi @MathiasVDA
Thanks for the contribution! Please note that xsd2shacl is now managed by Poetry, so there is no requirements.txt file. If there are any new dependencies, please add them to the pyproject.toml file.

[MathiasVDA]

This is the first time I'm working with something that uses poetry. Could you give me a hint as to how I should use it to test the processing of an xsd file without compiling the code first?

[dachafra]

The dependencies are defined here, but I think you don't need to add any because they are already defined.

For using poetry instead of requirements.txt:

pip install poetry
poetry install 

See documentation here. If you want to build the package: poetry build
Then is just python3 -m xsd2shacl [OPTIONS]

[MathiasVDA]

Yes but how do I test the code without building? :)

That's why I added the requirement file, I just consider the class as any other python class and call it from a test python script.

[dachafra]

poetry install works in the same way as pip install -r requirements.txt. In any case, if you want to use requirements.txt for local testing is perfectly okay, but please, do not include it in the PR ;-)

[MathiasVDA]

It's removed. But I think the poetry pyproject.toml file is missing setuptools
(I can't remember the error I got when trying to use the scripts after doing poetry install)

[dachafra]

Poetry is the replacement of setuptools, it shouldn't be required asaik