Set section length dynamically

[wanshot]

Hi tell-k
In the case of long model verbose, syntax error of reStructuredText will result.

I set the section length dynamically.

However, I used wcwidth for this fix, but if you do not want to rely on external libraries, reject it

[coveralls]

Coverage remained the same at 100.0% when pulling 62b0251 on wanshot:dynamic_section into cc3009e on tell-k:master.

[tell-k]

@wanshot

First of all thanks for your nice PR.

I have a question for you.
Why shold we need wcwdith?

I do not think that an exact character width is necessary. By converting to bytes, you can get a length longer than the exact character width. That's enough.

# py3
from django.utils.encoding import force_bytes
from wcwidth import wcswidth

print(len(force_bytes('日本語'))) # => 9 (This is enough length).
print(wcswidth('日本語'))         # => 6

In other words, it can be a simpler implementation.
Please try this implementaion and modfied your PR.

https://gist.github.com/tell-k/a6b7a2bfb15952fa898c9dcda95efba7

If this is not good, please report again.
Thx for your help :)

[tell-k]

This line isn't needed. Because wcwidth exists in install_requires of setup.py. you should write only the testing library here.

[wanshot]

Thanks for the reply:satisfied:

Certainly precise number of characters was not necessary.

The suggested modification is better than what I thought. I will refer to it...
I fix it and PR again！

[tell-k]

I fix it and PR again！

yeah!
i'm look forward to your next PR.

thx.

[wanshot]

I will be glad if you look fixed at your convenience!

[tell-k]

@wanshot Sorry too late my reply. Thank you for your help.

[tell-k]

I've just released v1.9.0 https://pypi.python.org/pypi/django-modelsdoc/0.1.9

[wanshot]

@tell-k thank you!! 🎉