Finding langNames default using pkg_resources issue #107

[ayushjainrksh]

Starting fresh pull request that solves issue 107

[coveralls]

Coverage increased (+0.2%) to 45.273% when pulling 375e1ea on ayushjainrksh:issue107 into eb986aa on apertium:master.

[coveralls]

Coverage increased (+0.07%) to 45.192% when pulling 40af2b3 on ayushjainrksh:issue107 into eb986aa on apertium:master.

[ayushjainrksh]

It would build from source properly with default langNames but there is an issue with tornado but that's a separate issue. Please check out this PR.

[sushain97]

This doesn't seem to be getting the correct path when I use pip3 install .. e.g:

$ apertium-apy --help | grep lang-names -A 3
  -l LANG_NAMES, --lang-names LANG_NAMES
                        path to localised language names sqlite database
                        (default = /usr/local/lib/python3.7/site-
                        packages/langNames.db)

$ stat /usr/local/lib/python3.7/site-packages/langNames.db
stat: /usr/local/lib/python3.7/site-packages/langNames.db: stat: No such file or directory

[ayushjainrksh]

Yeah there's a problem. I looked in my system directories and didn't understand why is langNames.db in /usr/local/share/apertium-apy while apertium_apy installation is in /usr/local/lib/python3.7/site-packages/?

[sushain97]

https://github.com/apertium/apertium-apy/blob/master/setup.py#L68. There's probably a different pkg_resources or pkgutil method to get a path to a data file.

[ayushjainrksh]

Please check if it works for you.

[sushain97]

This is way too hardcoded and will almost certainly fail depending on how the installation is done.

[ayushjainrksh]

Should I find another way/package for finding path for datafiles in python?

[ayushjainrksh]

The problem is we are looking for apertium_apy installation and datafile is not present in the same folder

[sushain97]

Should I find another way/package for finding path for datafiles in python?

https://github.com/apertium/apertium-apy/blob/master/setup.py#L68. There's probably a different pkg_resources or pkgutil method to get a path to a data file.

[ayushjainrksh]

Hey, I have come up with an idea. I am finding langNames.db in root now. Will that be fine?

[sushain97]

No, this is a bad idea for a number of reasons including that we shouldn't be searching around the user's filesystem (let's be privacy-sensitive).

[sushain97]

Did neither pkg_resources not pkgutil have anything useful? I'm relatively certain they will.

[ayushjainrksh]

I have been trying to find out if any of the function in both the packages can help. Both rely on installed modules, which in our case is apertium_apy

[ayushjainrksh]

Either we do path manipulation as in my previous PR ( the hardcoded one) becuase when we search apertium_modules it takes us to installed package. Well I will keep on searching.