Fix build and all deprecation warnings on Python 3.

[jamadden]

Fixes #10.

This updates the package to use the new-in-Python-3 unicode APIs when available. Previously there were ~50 deprecation warnings. Now there are none.

This also converts most uses of size_t into Py_ssize_t, because that's what the Python APIs use and return (e.g., for unicode length, sequence length, etc). This eliminates more warnings and casts.

[jamadden]

travis-ci.org is shutting down so there's currently no CI running on PRs here. I have tested it locally with Python 2.7, 3.5 and 3.9.

[jamadden]

Hi @zopyx ! I haven't been around for awhile, but this patch is becoming more important. Without it, it doesn't compile on Python 3.12 at all (though I will still need to make one adjustment for 3.12, which I can add to this PR). Any hope of getting this released anytime soon?

[jamadden]

My latest commit adds support for the newer versions of Python, while still being compatible back to Python 2.7.

There are remaining warning about the pre-ANSI C code in hashtable.c. It is still using the no-definition function definitions. This is likely to eventually be unsupported by any compilers.

void
hashtable_destroy(table, del)
	hashtable	*table;
	int			 del;
{
}

Instead of the standard

void
hashtable_destroy(hashtable* table, int del)
{
}

[zopyx]

Hi there,

the project is unmaintained and dead since 2019:

https://community.plone.org/t/textindexng3-end-of-lifetime-announcement/8111

I recommend to fork the repo.
If you want to create a new release on PyPI, I can grant you the related access rights.

[jamadden]

Thanks, I understand this is unmaintained. In our case, we need it for legacy code that we're currently modernizing, with hopes to eventually drop it.

I'd be more than happy to fork the project and publish an updated version to PyPI if you'd give me the rights. I can't promise any more maintenance after that, but hopefully that's helpful.