Create a Lua convenience functions for conversion betweem language code and project and sitelink code
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	Jarekt
	May 22 2020, 3:51 PM

Description

There are 900-1000 sitelink codes at the moment (like "be_x_oldwiki") and each is associated with a language code and project (like "be-tarask" and "Wikipedia"). Many Lua tools are parsing sitelinks to get language code and project or creating sitelinks based on users language and project, and many of them have to hardwire a lot of confusing special cases. It would be nice to have 2 convenience functions with "official" conversion between sitelink ID (same as used by mw.wikibase.getSitelink) and language codes (same as used by Lua Language_library).

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Status	Subtype	Assigned	Task
Open		None	T124286 [Epic] Wikidata language support
Open		None	T145535 language code disparity (Wikidata tracking)
Invalid		None	T112073 Lua in Wikibase (tracking)
Open		None	T182147 more convenience functions for Lua
Open	Feature	None	T253387 Create a Lua convenience functions for conversion betweem language code and project and sitelink code

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Jarekt created this task.May 22 2020, 3:51 PM

Restricted Application added a project: Wikidata. · View Herald TranscriptMay 22 2020, 3:51 PM

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

YES, PLEASE! Wikidata Infobox uses this function to convert a language code into a site ID:

local function databaseId( langcode )
	local exceptions = {
		['be-tarask'] = 'be_x_old',     -- Belarusian (Taraškievica orthography)
		['bho']       = 'bh',           -- Bhojpuri
		['cbk-zam']   = 'cbk_zam',      -- Chavacano de Zamboanga
		['gsw']       = 'als',          -- Alemannic
		['ike']       = 'iu',           -- Inuktitut
		['lzh']       = 'zh_classical', -- Classical Chinese
		['map-bms']   = 'map_bms',      -- Basa Banyumasan
		['nan']       = 'zh_min_nan',   -- Min Nan Chinese
		['nb']        = 'no',           -- Norwegian Bokmål
		['nds-nl']    = 'nds_nl',       -- Low Saxon
		['mo']        = 'ro',           -- Moldaawisk
		['roa-tara']  = 'roa_tara',     -- Tarantino
		['rup']       = 'roa_rup',      -- Aromanian
		['sgs']       = 'bat_smg',      -- Samogitian
		['vro']       = 'fiu_vro',      -- Võro
		['yue']       = 'zh_yue',       -- Cantonese
	}

	local exception = exceptions[langcode]
	if exception then return exception end

	return langcode:gsub("-.*", "") -- delete everything after hyphen
end

I painstakingly compiled the list of exceptions from a variety of sources, and I'm not sure whether the list is comprehensive. This issue is annoying module writers since at least 2018.

LennardHofmann added a parent task: T145535: language code disparity (Wikidata tracking).Aug 5 2022, 9:40 AM

Related: T114772

Lydia_Pintscher added a parent task: T182147: more convenience functions for Lua.Aug 5 2022, 11:56 AM

Special:SiteMatrix is provided by SiteMatrix, not Wikibase, so this code may have a better place there. (Although SiteMatrix has no Lua support yet, so it’d require a bit more setup.)

Pols12 subscribed.Jan 11 2023, 7:36 PM

Michael moved this task from Incoming to New Capabilities & Convenience on the Wikibase-Lua board.Thu, Mar 28, 11:15 AM

Michael mentioned this in T310581: Make LanguageCode::bcp47() available in Lua.Thu, Mar 28, 11:57 AM

Create a Lua convenience functions for conversion betweem language code and project and sitelink codeOpen, Needs TriagePublicFeatureActions

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Create a Lua convenience functions for conversion betweem language code and project and sitelink code
Open, Needs TriagePublicFeature
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