Multilingual – Module with functions in context of languages, language codes, language names.

All functions expect one unnamed parameter 1 with the key information, and sometimes more optionals. Whitespace ahead and after any content is ignored. Upcasing of language code segments like in en-US does not matter; results are downcased.

The return value is an empty string (“nothing”), if the parameter value does not fulfil the expectations. If there is a result or the query condition is true, at least one visible character will be returned. The result does not begin or end with a space.

fair

Format language code according to RFC 5646 and check validity

• Result: empty, if invalid

findCode

Retrieve code of language name in local (current project) language.

A code itself will be identified, too.

format

Format one or more languages.

• 1 – language list or single item
• slang – language of the answer, if not native
  • * – native (default)
  • ! – current project
  • any valid code
• shift – capitalization
  • c – capitalize all
  • d – downcase everything
  • f – capitalize first item only
  • m – downcase every first word in item only
• link=1 – link items
• scream – category title in case of error
• split – split pattern, if list expected; e.g. split=, – otherwise 1 is regarded as single item
• separator – list separator, else split
• start – prepend first list element, if any

getBase

Retrieve base language from possibly combined ISO language code.

getName

Which name is assigned to this language code?

• 2 – language of the answer
  • * – in that language itself (default)
  • ! – in project language
  • Any ISO code.

isLang

Could this be an ISO language code?

• nothing – if not

isLangWiki

Could this be a Wiki language version?

• nothing – if not

kannDeutsch

Might someone with this language code understand German?

• nothing – if not

userLang

Try to support user language by application.

• 1 – space separated list of available ISO 639 codes
• Result:
  • If the current user language is not a list element, the first element is used.
  • If the current user language is a variant like en-US or en-GB and that is not mentioned explicitly in list, base language (here en) will be tried.
  • If nothing matches and no list is provided, the project language (here en), at least en for English will be returned.

failsafe

Version ID: 2020-12-10

optional parameter 1 – required version

result: empty, if requirement not met

A test page illustrates practical use.

All functions described above can be used by other modules:

local lucky, Multilingual = pcall( require, "Module:Multilingual" )
if type( Multilingual ) == "table" then
    Multilingual = Multilingual.Multilingual()
else
    -- failure; Multilingual is the error message
    return "<span class='error'>" .. Multilingual .. "</span>"
end

Subsequently there are available:

Multilingual.fair( ask )

• ask – string, or table according to getLang()

Multilingual.findCode( ask )

Multilingual.format( apply, alien, alter, active, alert, frame, assembly, adjacent )

• apply – string with language list or single item
• alien – language of the answer
  • nil false "*" – native
  • "!" – current project
  • any valid code
• alter – capitalization
  • "c" – capitalize
  • "d" – downcase everything
  • "f" – capitalize first item only, downcase anything else
• active – link items, if true
• alert – string with category title in case of error
• frame – if available
• assembly – string with split pattern, if list expected
• adjacent – string with list separator, else assembly
• ahead – string for optional prepending first element, if any

Multilingual.getBase( ask )

Multilingual.getLang( ask )

Split language code into components

Returns: table

.base – Basic language (2–3 lowercase letters)

.region – Country (2 uppercase letters)

.script – Scripting (4 letters, capitalized)

.year – year (4 digits)

.extension – Extension (1 lowercase letter)

.other – More

.legal – true if valid

.n – Number of components

Multilingual.getName( ask, alien )

• alien – language of the answer
  • nil false "*" – native
  • "!" – current project
  • Any ISO code.

Multilingual.isLang( ask )

Multilingual.isLangWiki( ask )

Multilingual.kannDeutsch( ask )

Multilingual.userLang( accept, frame )

• accept – string with space separated list of available ISO 639 codes
• frame – if available

Multilingual.failsafe( atleast )

• atleast
  optional
  nil or required version
• Returns: string or false

If succeeding, the Multilingual.get*() return a string, the Multilingual.is*() true; on failure false.

General library; no limitations.

• WLink
• /config – optional project specific adaption