This repo contains ISO-3166-2 translations and translation scripts for the Wiki Loves Monuments (WLM) API. This is a project specifically to provide translations to ISO-3166-2 data for the WLM mobile app (wikimedia/WLMMobile)
ISO-3166-2 data is taken from a CSV dump from commondatahub.com. The csv gets processed into a file containing a PHP array in this format:
$subdivisions[<country iso code>][<subdivision iso code>] = array(
'name' => <subdivision name>,
'level' => <subdivision level>
);The CSV is stored in this repo and the file can be generated with parseIso3166-2Dump.php. This file can optionally check subdivision names against English Wikipedia article titles, using redirects from the ISO-3166-2 subdivision name in the CSV to the 'standard' Wikipedia article title to choose what name to use for the subdivision.
The iso3166-2-l10n.php script will take the mappings generated above, and foreach subdivision name, attempt to find a translation using English Wikipedia's interwiki language links. That is, it will query Wiipedia's API for a title (mapped to a subdivision name) and look for article titles mapped in other languages, and use those titles as subdivision names for that language. It will generate language-specific files containing the same PHP array as above, with the subdivision name localized.
This is far from perfect. At the moment, it only attempts to perform translations for countries/languages that are being used by the WLM app. Also, as you can imagine, there are many potential problems with relying on Wikipedia page titles for translatons. But it's a cheap, quick, and dirty way to get translated ISO-3166-2 data in a free, open, and mashed up manner!