Module:Authority control

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Documentatie voor deze module kan aangemaakt worden op de volgende pagina: Module:Authority control/doc

require('Module:No globals')

local displayLabel = 'Bibliografische informatie'
local displayLink = 'Wikipedia:Bibliografische informatie'
local catNameInvalidID = 'Wikipedia:Pagina\'s met ongeldige authority control id'

local p = {}
local title = mw.title.getCurrentTitle()
local namespace = title.namespace
local testcases = (string.sub(title.subpageText,1,9) == 'testcases')

--[[==========================================================================]]
--[[                      Property formatting functions                       ]]
--[[==========================================================================]]

function p.iaafLink( id )
	--P1146's format regex: [0-9][0-9]* (e.g. 012)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[https://www.iaaf.org/athletes/_/'..id..' '..id..']'
end

function p.viafLink( id )
	--P214's format regex: [1-9]\d(\d{0,7}|\d{17,20}) (e.g. 123456789, 1234567890123456789012)
	if not id:match( '^[1-9]%d%d?%d?%d?%d?%d?%d?%d?$' ) and
	   not id:match( '^[1-9]%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d?%d?%d?$' ) then
		return false
	end
	return '[https://viaf.org/viaf/'..id..' '..id..']'
end

function p.kulturnavLink( id )
	--P1248's format regex: [0-9a-f]{8}\-[0-9a-f]{4}\-[0-9a-f]{4}\-[0-9a-f]{4}\-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[http://kulturnav.org/'..id..' '..id..']'
end

function p.sikartLink( id )
	--P781's format regex: \d{7,9} (e.g. 123456789)
	if not id:match( '^%d%d%d%d%d%d%d%d?%d?$' ) then
		return false
	end
	return '[http://www.sikart.ch/KuenstlerInnen.aspx?id='..id..'&lng=en '..id..']'
end

function p.tlsLink( id )
	local id2 = id:gsub(' +', '_')
	--P1362's format regex: \p{Lu}[\p{L}\d_',\.\-\(\)\*/–]{3,59} (e.g. Abcd)
	local class = "[%a%d_',%.%-%(%)%*/–]"
	local regex = "^%u"..string.rep(class, 3)..string.rep(class.."?", 56).."$"
	if not mw.ustring.match( id2, regex ) then
		return false
	end
	return '[http://tls.theaterwissenschaft.ch/wiki/'..id2..' '..id..']'
end

function p.ciniiLink( id )
	--P271's format regex: D[AB]\d{7}[\dX] (e.g. DA12345678)
	if not id:match( '^D[AB]%d%d%d%d%d%d%d[%dX]$' ) then
		return false
	end
	return '[https://ci.nii.ac.jp/author/'..id..'?l=en '..id..']'
end

function p.daaoLink( id )
	--P1707's format regex: [a-z\-]+\d* (e.g. rolf-harris)
	if not id:match( '^[a-z%-]+%d*$' ) then
		return false
	end
	return '[https://www.daao.org.au/bio/'..id..' '..id..']'
end

function p.bneLink( id )
	--P950's format regex: (XX|FF|a)\d{4,7}|(bima|bimo|bica|bis[eo]|bivi|Mise|Mimo|Mima)\d{10} (e.g. XX1234567)
	if not id:match( '^[XF][XF]%d%d%d%d%d?%d?%d?$' ) and
	   not id:match( '^a%d%d%d%d%d?%d?%d?$' ) and
	   not id:match( '^bi[mcsv][aoei]%d%d%d%d%d%d%d%d%d%d$' ) and
	   not id:match( '^Mi[sm][eoa]%d%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?action=display&authority_id='..id..' '..id..']'
end

function p.uscongressLink( id )
	--P1157's format regex: [A-Z]00[01]\d{3} (e.g. A000123)
	if not id:match( '^[A-Z]00[01]%d%d%d$' ) then
		return false
	end
	return '[http://bioguide.congress.gov/scripts/biodisplay.pl?index='..id..' '..id..']'
end

function p.naraLink( id )
	--P1225's format regex: ^([1-9]\d{0,8})$ (e.g. 123456789)
	if not id:match( '^[1-9]%d?%d?%d?%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://catalog.archives.gov/id/'..id..' '..id..']'
end

function p.narcisLink( id )
	--P7449's format regex: PRS\d+ (e.g. PRS1238288)
	if not id:match( '^PRS%d+$' ) then
		return false
	end
	return '[https://www.narcis.nl/person/RecordID/'..id..' '..id..']'
end

function p.botanistLink( id )
	--P428's format regex: ('t )?(d')?(de )?(la )?(van (der )?)?(Ma?c)?(De)?(Di)?\p{Lu}?C?['\p{Ll}]*([-'. ]*(van )?(y )?(d[ae][nr]?[- ])?(Ma?c)?[\p{Lu}bht]?C?['\p{Ll}]*)*\.? ?f?\.? (e.g. L.)
	--not easily/meaningfully implementable in Lua's regex since "(this)?" is not allowed...
	if not mw.ustring.match( id, "^[%u%l%d%. '-]+$" ) then --better than nothing
		return false
	end
	local id2 = id:gsub(' +', '%%20')
	return '[https://www.ipni.org/ipni/advAuthorSearch.do?find_abbreviation='..id2..' '..id..']'
end

function p.mgpLink( id )
	--P549's format regex: \d{1,6} (e.g. 123456)
	if not id:match( '^%d%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://genealogy.math.ndsu.nodak.edu/id.php?id='..id..' '..id..']'
end

function p.rslLink( id )
	--P947's format regex: \d{1,9} (e.g. 123456789)
	if not id:match( '^%d%d?%d?%d?%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[http://aleph.rsl.ru/F?func=find-b&find_code=SYS&adjacent=Y&local_base=RSL11&request='..id..'&CON_LNG=ENG '..id..']'
end

function p.leonoreLink( id )
	--P640's format regex: LH//\d{1,4}/\d{1,3}|19800035/\d{1,4}/\d{1,5}(Bis|Ter)?|C/0/\d{1,2} (e.g. LH//2064/18)
	if not id:match( '^LH//%d%d?%d?%d?/%d%d?%d?$' ) and             --IDs from       LH/1/1 to         LH//2794/54 (legionaries)
	   not id:match( '^19800035/%d%d?%d?%d?/%d%d?%d?%d?%d?$' ) and --IDs from 19800035/1/1 to 19800035/385/51670 (legionnaires who died 1954-1977 & some who died < 1954)
	   not id:match( '^C/0/%d%d?$' ) then                          --IDs from        C/0/1 to             C/0/84 (84 famous legionaries)
		return false
	end
	return '[http://www.culture.gouv.fr/public/mistral/leonore_fr?ACTION=CHERCHER&FIELD_1=COTE&VALUE_1='..id..' '..id..']'
end

function p.sbnLink( id )
	--P396's format regex: \D{2}[A-Z0-3]V\d{6} (e.g. CFIV000163)
	if not id:match( '^%u%u[%u0-3]V%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://opac.sbn.it/opacsbn/opac/iccu/scheda_authority.jsp?bid='..id..' '..id..']'
end

function p.nkcLink( id )
	--P691's format regex: [a-z]{2,4}[0-9]{2,14} (e.g. abcd12345678901234)
	if not id:match( '^[a-z][a-z][a-z]?[a-z]?%d%d%d?%d?%d?%d?%d?%d?%d?%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica='..id..'&CON_LNG=ENG '..id..']'
end

function p.nclLink( id )
	--P1048's format regex: \d+ (e.g. 1081436)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[http://aleweb.ncl.edu.tw/F/?func=accref&acc_sequence='..id..'&CON_LNG=ENG '..id..']'
end

function p.ndlLink( id )
	--P349's format regex: 0?\d{8} (e.g. 012345678)
	if not id:match( '^0?%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://id.ndl.go.jp/auth/ndlna/'..id..' '..id..']'
end

function p.ngvLink( id )
	--P2041's format regex: \d+ (e.g. 12354)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[https://www.ngv.vic.gov.au/explore/collection/artist/'..id..'/ '..id..']'
end

function p.sudocLink( id )
	--P269's format regex: (\d{8}[\dX]|) (e.g. 026927608)
	if not id:match( '^%d%d%d%d%d%d%d%d[%dxX]$' ) then --legacy: allow lowercase 'x'
		return false
	end
	return '[https://www.idref.fr/'..id..' '..id..']'
end

function p.hdsLink( id )
	--P902's format regex: \d{6} (e.g. 050123)
	if not id:match( '^%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://hls-dhs-dss.ch/fr/articles/'..id..' '..id..']'
end

function p.swissparliamentLink( id )
	--P1307's format regex: \d{1,4} (e.g. 2361)
	if not id:match( '^%d%d?%d?%d?$' ) then
		return false
	end
	return '[https://www.parlament.ch/fr/biografie/wd/'..id..' '..id..']'
end

function p.bdelisLink( id )
	--P6231's format regex: \d{5} (e.g. 55864)
	if not id:match( '^%d%d%d%d%d$' ) then
		return false
	end
	return '[https://www2.unil.ch/elitessuisses/personne.php?id='..id..' '..id..']'
end

function p.lirLink( id )
	--P886's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[http://www.e-lir.ch/e-LIR___Lexicon.'..id..'.450.0.html '..id..']'
end

function p.splitLccn( id )
	--P244's format regex: (n|nb|nr|no|ns|sh)([4-9][0-9]|00|20[0-1][0-9])[0-9]{6} (e.g. n78039510)
	if id:match( '^%l%l?%l?%d%d%d%d%d%d%d%d%d?%d?$' ) then
		id = id:gsub( '^(%l+)(%d+)(%d%d%d%d%d%d)$', '%1/%2/%3' )
	end
	if id:match( '^%l%l?%l?/%d%d%d?%d?/%d+$' ) then
		return mw.text.split( id, '/' )
	end
	return false
end

function p.append(str, c, length)
	while str:len() < length do
		str = c .. str
	end
	return str
end

function p.lccnLink( id )
	local parts = p.splitLccn( id ) --e.g. n78039510
	if not parts then
		return false
	end
	local lccnType = parts[1] ~= 'sh' and 'names' or 'subjects'
	id = parts[1] .. parts[2] .. p.append( parts[3], '0', 6 )
	return '[https://id.loc.gov/authorities/'..lccnType..'/'..id..' '..id..']'
end

function p.mbaLink( id )
	--P434's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/artist/'..id..' '..id..']'
end

function p.mbareaLink( id )
	--P982's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/area/'..id..' '..id..']'
end

function p.mbiLink( id )
	--P1330's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/instrument/'..id..' '..id..']'
end

function p.mblLink( id )
	--P966's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/label/'..id..' '..id..']'
end

function p.mbpLink( id )
	--P1004's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/place/'..id..' '..id..']'
end

function p.mbrgLink( id )
	--P436's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/release-group/'..id..' '..id..']'
end

function p.mbsLink( id )
	--P1407's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/series/'..id..' '..id..']'
end

function p.mbwLink( id )
	--P435's format regex: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (e.g. 12345678-1234-1234-1234-1234567890AB)
	if not id:match( '^%x%x%x%x%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%-%x%x%x%x%x%x%x%x%x%x%x%x$' ) then
		return false
	end
	return '[https://musicbrainz.org/work/'..id..' '..id..']'
end

--Returns the ISNI check digit isni must be a string where the 15 first elements are digits, e.g. 0000000066534145
function p.getIsniCheckDigit( isni )
	local total = 0
	for i = 1, 15 do
		local digit = isni:byte( i ) - 48 --Get integer value
		total = (total + digit) * 2
	end
	local remainder = total % 11
	local result = (12 - remainder) % 11
	if result == 10 then
		return "X"
	end
	return tostring( result )
end

--Validate ISNI (and ORCID) and retuns it as a 16 characters string or returns false if it's invalid
--See http://support.orcid.org/knowledgebase/articles/116780-structure-of-the-orcid-identifier
function p.validateIsni( id )
	--P213 (ISNI) format regex: [0-9]{4} [0-9]{4} [0-9]{4} [0-9]{3}[0-9X] (e.g. 0000-0000-6653-4145)
	--P496 (ORCID) format regex: 0000-000(1-[5-9]|2-[0-9]|3-[0-4])\d{3}-\d{3}[\dX] (e.g. 0000-0002-7398-5483)
	id = id:gsub( '[ %-]', '' ):upper()
	if not id:match( '^%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d[%dX]$' ) then
		return false
	end
	if p.getIsniCheckDigit( id ) ~= string.char( id:byte( 16 ) ) then
		return false
	end
	return id
end

function p.isniLink( id )
	id = p.validateIsni( id ) --e.g. 0000-0000-6653-4145
	if not id then
		return false
	end
	return '[http://isni.org/isni/'..id..' '..id:sub( 1, 4 )..' '..id:sub( 5, 8 )..' '..id:sub( 9, 12 )..' '..id:sub( 13, 16 )..']'
end

function p.orcidLink( id )
	id = p.validateIsni( id ) --e.g. 0000-0002-7398-5483
	if not id then
		return false
	end
	id = id:sub( 1, 4 )..'-'..id:sub( 5, 8 )..'-'..id:sub( 9, 12 )..'-'..id:sub( 13, 16 )
	return '[https://orcid.org/'..id..' '..id..']'
end

function p.oeibeLink( id )
	--P1764's format regex: [1-9]\d* (e.g. 49951)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://id.erfgoed.net/erfgoedobjecten/'..id..' '..id..']'
end

function p.gndLink( id )
	--P227's format regex: 1[0123]?\d{7}[0-9X]|[47]\d{6}-\d|[1-9]\d{0,7}-[0-9X]|3\d{7}[0-9X] (e.g. 4079154-3)
	if not id:match( '^1[0123]?%d%d%d%d%d%d%d[0-9X]$' ) and
	   not id:match( '^[47]%d%d%d%d%d%d%-%d$' ) and
	   not id:match( '^[1-9]%d?%d?%d?%d?%d?%d?%d?%-[0-9X]$' ) and
	   not id:match( '^3%d%d%d%d%d%d%d[0-9X]$' ) then
		return false
	end
	return '[https://d-nb.info/gnd/'..id..' '..id..']'
end

function p.selibrLink( id )
	--P906's format regex: [1-9]\d{4,5} (e.g. 123456)
	if not id:match( '^[1-9]%d%d%d%d%d?$' ) then
		return false
	end
	return '[https://libris.kb.se/auth/'..id..' '..id..']'
end

function p.bnfLink( id )
	--P268's format regex: \d{8}[0-9bcdfghjkmnpqrstvwxz] (e.g. 123456789)
	if not id:match( '^c?b?%d%d%d%d%d%d%d%d[0-9bcdfghjkmnpqrstvwxz]$' ) then
		return false
	end
	--Add cb prefix if it has been removed
	if not id:match( '^cb.+$' ) then
		id = 'cb'..id
	end
	return '[https://catalogue.bnf.fr/ark:/12148/'..id..' '..id..'] [https://data.bnf.fr/ark:/12148/'..id..' (data)]'
end

function p.bpnLink( id )
	--P651's format regex: \d{6,8} (e.g. 00123456)
	if not id:match( '^%d%d%d%d%d%d%d%d$' ) and --original format regex, changed 8/2019 to
	   not id:match( '^0?%d%d%d%d%d%d%d$' ) and --allow 1-2 leading 0s, allowed by the website
	   not id:match( '^0?0?%d%d%d%d%d%d$' ) then
		return false
	end
	return '[http://www.biografischportaal.nl/persoon/'..id..' '..id..']'
end

function p.ridLink( id )
	--P1053's format regex: [A-Z]{1,3}-\d{4}-(19|20)\d\d (e.g. A-1234-1934)
	if not id:match( '^[A-Z][A-Z]?[A-Z]?%-%d%d%d%d%-19%d%d$' ) and
	   not id:match( '^[A-Z][A-Z]?[A-Z]?%-%d%d%d%d%-20%d%d$' ) then
		return false
	end
	return '[https://www.researcherid.com/rid/'..id..' '..id..']'
end

function p.bibsysLink( id )
	--P1015's format regex: [1-9]\d* or [1-9](\d{0,8}|\d{12}) (e.g. 1234567890123)
	--TODO: follow up @ [[d:Property talk:P1015#Discrepancy between the 2 regex constraints]] or escalate/investigate
	if not id:match( '^[1-9]%d?%d?%d?%d?%d?%d?%d?%d?$' ) and
	   not id:match( '^[1-9]%d%d%d%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://authority.bibsys.no/authority/rest/authorities/html/'..id..' '..id..']'
end

function p.ulanLink( id )
	--P245's format regex: 500\d{6} (e.g. 500123456)
	if not id:match( '^500%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://www.getty.edu/vow/ULANFullDisplay?find=&role=&nation=&subjectid='..id..' '..id..']'
end

function p.nlaLink( id )
	--P409's format regex: [1-9][0-9]{0,11} (e.g. 123456789012)
	if not id:match( '^[1-9]%d?%d?%d?%d?%d?%d?%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://nla.gov.au/anbd.aut-an'..id..' '..id..']'
end

function p.troveLink( id )
	--P1315's format regex: [1-9]\d{5,7} (e.g. 12345678)
	if not id:match( '^[1-9]%d%d%d%d%d%d?%d?$' ) then
		return false
	end
	return '[https://trove.nla.gov.au/people/'..id..' '..id..']'
end

function p.rkdartistsLink( id )
	--P650's format regex: [1-9]\d{0,5} (e.g. 123456)
	if not id:match( '^[1-9]%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://rkd.nl/nl/explore/artists/'..id..' '..id..']'
end

function p.snacLink( id )
	--P3430's format regex: \d*[A-Za-z][0-9A-Za-z]* (e.g. A)
	if not id:match( '^%d*[A-Za-z][0-9A-Za-z]*$' ) then
		return false
	end
	return '[https://snaccooperative.org/ark:/99166/'..id..' '..id..']'
end

function p.dblpLink( id )
	--P2456's format regex: \d{2,3} /\d+(-\d+)?|[a-z] /[a-zA-Z][0-9A-Za-z]*(-\d+)? (e.g. 123/123)
	if not id:match( '^%d%d%d?/%d+$' ) and
	   not id:match( '^%d%d%d?/%d+%-%d+$' ) and
	   not id:match( '^[a-z]/[a-zA-Z][0-9A-Za-z]*$' ) and
	   not id:match( '^[a-z]/[a-zA-Z][0-9A-Za-z]*%-%d+$' ) then
		return false
	end
	return '[https://dblp.org/pid/'..id..' '..id..']'
end

function p.dgo4Link( id )
	--P1133's format regex: \d{5}-[A-Z]{3}-\d{4}-\d{2}
	if not id:match( '^%d%d%d%d%d%-[A-Z][A-Z][A-Z]%-%d%d%d%d%-%d%d$' ) then
		return false
	end
	return '[https://lampspw.wallonie.be/dgo4/site_thema/index.php/dossier/view/BC_PAT/'..id..' '..id..']'
end

function p.aagLink( id )
	--P3372's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[http://www.aucklandartgallery.com/explore-art-and-ideas/artist/'..id..'/ '..id..']'
end

function p.acmLink( id )
	--P864's format regex: \d{11} (e.g. 12345678901)
	if not id:match( '^%d%d%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://dl.acm.org/author_page.cfm?id='..id..' '..id..']'
end

function p.adbLink( id )
	--P1907's format regex: [a-z][-a-z]+-([1-2]\d|[1-9])\d{0,3} (e.g. barton-sir-edmund-toby-71)
	if not id:match( '^[a-z][-a-z]+-[1-2]%d%d?%d?%d?$' ) and
	   not id:match( '^[a-z][-a-z]+-[1-9]%d?%d?%d?%d?$' ) then
		return false
	end
	return '[http://adb.anu.edu.au/biography/'..id..' '..id..']'
end

function p.agsaLink( id )
	--P6804's format regex: [1-9]\d* (e.g. 3625)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://www.agsa.sa.gov.au/collection-publications/collection/creators/_/'..id..'/ '..id..']'
end

function p.autoresuyLink( id )
	--P2558's format regex: [1-9]\d{0,4} (e.g. 12345)
	if not id:match( '^[1-9]%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://autores.uy/autor/'..id..' '..id..']'
end

function p.awrLink( id )
	--P4186's format regex: (([A-Z]{3}\d{4})|([A-Z]{2}\d{5}))[a-z] (e.g. PR00768b)
	if not id:match( '^[A-Z][A-Z][A-Z]%d%d%d%d[a-z]$' ) and
	   not id:match( '^[A-Z][A-Z]%d%d%d%d%d[a-z]$' ) then
		return false
	end
	return '[http://www.womenaustralia.info/biogs/'..id..'.htm '..id..']'
end

function p.picLink( id )
	--P2750's format regex: [1-9]\d* (e.g. 1)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://pic.nypl.org/constituents/'..id..' '..id..']'
end

function p.bildLink( id )
	--P2092's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[https://www.bildindex.de/document/obj'..id..' '..id..']'
end

function p.jocondeLink( id )
	--P347's format regex: [\-0-9A-Za-z]{11} (e.g. 12345678901)
	local regex = '^'..string.rep('[%-0-9A-Za-z]', 11)..'$'
	if not id:match( regex ) then
		return false
	end
	return '[https://www.pop.culture.gouv.fr/notice/joconde/'..id..' '..id..']'
end

function p.rkdidLink( id )
	--P350's format regex: [1-9]\d{0,5} (e.g. 123456)
	if not id:match( '^[1-9]%d?%d?%d?%d?%d?$' ) then
		return false
	end
	return '[https://rkd.nl/nl/explore/images/'..id..' '..id..']'
end

function p.balatLink( id )
	--P3293's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[http://balat.kikirpa.be/object/104257'..id..' '..id..']'
end

function p.lnbLink( id )
	--P1368's format regex: \d{9} (e.g. 123456789)
	if not id:match( '^%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://kopkatalogs.lv/F?func=direct&local_base=lnc10&doc_number='..id..'&P_CON_LNG=ENG '..id..']'
end

function p.nskLink( id )
	--P1375's format regex: \d{9} (e.g. 123456789)
	if not id:match( '^%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[http://katalog.nsk.hr/F/?func=direct&doc_number='..id..'&local_base=nsk10 '..id..']'
end

function p.iciaLink( id )
	--P1736's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[https://www.imj.org.il/artcenter/newsite/en/?artist='..id..' '..id..']'
end

function p.ta98Link( id )
	--P1323's format regex: A\d{2}\.\d\.\d{2}\.\d{3}[FM]? (e.g. A12.3.45.678)
	if not id:match( '^A%d%d%.%d%.%d%d%.%d%d%d[FM]?$' ) then
		return false
	end
	return '[http://tools.wmflabs.org/wikidata-externalid-url/?p=1323&url_prefix=https:%2F%2Fwww.unifr.ch%2Fifaa%2FPublic%2FEntryPage%2FTA98%20Tree%2FEntity%20TA98%20EN%2F&url_suffix=%20Entity%20TA98%20EN.htm&id='..id..' '..id..']'
end

function p.tdviaLink( id )
	--P7314's format regex: [a-z/-]+] (e.g. barkan-omer-lutfi)
	if not id:match( '^[a-z/-]+$' ) then
		return false
	end
	return '[https://islamansiklopedisi.org.tr/'..id..' '..id..']'
end

function p.teLink( id )
	--P1693's format regex: E[1-8]\.\d{1,2}\.\d{1,2}\.\d{1,2}\.\d{1}\.\d{1}\.\d{1,3} (e.g. E1.23.45.67.8.9.0)
	local e1, e2 = id:match( '^E([1-8])%.(%d%d?)%.%d%d?%.%d%d?%.%d%.%d%.%d%d?%d?$' )
	if not e1 then
		return false
	end
	local TEnum = 'TEe0'..e1 --no formatter URL in WD, probably due to this complexity
	if e1 == '5' or e1 == '7' then
		if #e2 == 1 then e2 = '0'..e2 end
		TEnum = TEnum..e2
	end
	return '[http://www.unifr.ch/ifaa/Public/EntryPage/ViewTE/'..TEnum..'.html '..id..']'
end

function p.tepapaLink( id )
	--P3544's format regex: \d+ (e.g. 1)
	if not id:match( '^%d+$' ) then
		return false
	end
	return '[https://collections.tepapa.govt.nz/agent/'..id..' '..id..']'
end

function p.thLink( id )
	--P1694's format regex: H\d\.\d{2}\.\d{2}\.\d\.\d{5} (e.g. H1.23.45.6.78901)
	local h1, h2 = id:match( '^H(%d)%.(%d%d)%.%d%d%.%d%.%d%d%d%d%d$' )
	if not h1 then
		return false
	end
	local THnum = 'THh'..h1..h2 --no formatter URL in WD, probably due to this complexity
	return '[http://www.unifr.ch/ifaa/Public/EntryPage/ViewTH/'..THnum..'.html '..id..']'
end

function p.dsiLink( id )
	--P2349's format regex: [1-9]\d* (e.g. 1538)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[http://www.uni-stuttgart.de/hi/gnt/dsi2/index.php?table_name=dsi&function=details&where_field=id&where_value='..id..' '..id..']'
end

function p.fnzaLink( id )
	--P6792's format regex: [1-9]\d* (e.g. 9785)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://findnzartists.org.nz/artist/'..id..'/ '..id..']'
end

function p.s2authoridLink( id )
	--P4012's format regex: [1-9]\d* (e.g. 1796130)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://www.semanticscholar.org/author/'..id..' '..id..']'
end

function p.nliLink( id )
	--P8189's format regex: 98\d{12}5171 (e.g. 987007305652505171)
	if not id:match( '^98%d%d%d%d%d%d%d%d%d%d%d%d5171$' ) then
		return false
	end
	return '[http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request='..id..' '..id..']'
end

function p.nlpLink( id )
	--P1695's format regex: a[0-9]{13}
	if not id:match( '^a%d%d%d%d%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://dbn.bn.org.pl/descriptor-details/'..id..' '..id..']'
end

function p.reroLink( id )
	--P3065's format regex: 0[1-2]-[A-Z0-9]{1,10} (e.g. 02-A012345678)
	if not id:match( '^0[1-2]%-[A-Z%d][A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?[A-Z%d]?$' ) then
		return false
	end
	return '[http://data.rero.ch/'..id..' '..id..']'
end

function p.rmnLink( id )
	--P359's format regex: [1-9]\d* (e.g. 49951)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://monumentenregister.cultureelerfgoed.nl/monumenten/'..id..' '..id..']'
end

function p.rmcnLink( id )
	--P7135's format regex: [1-9]\d* (e.g. 49951)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[https://monumentenregister.cultureelerfgoed.nl/complexen/'..id..' '..id..']'
end

function p.nlrLink( id )
	--P1003's format regex: \d{9} (e.g. 123456789)
	if not id:match( '^%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[http://alephnew.bibnat.ro:8991/F?func=find-b&request='..id..'&find_code=SYS&adjacent=Y&local_base=NLR10 '..id..']'
end

function p.ntaLink( id )
	--P1006's format regex: \d{8}[\dX] (e.g. 12345678X)
	if not id:match( '^%d%d%d%d%d%d%d%d[%dX]$' ) then
		return false
	end
	return '[http://data.bibliotheken.nl/id/thes/p'..id..' '..id..']'
end

function p.bncLink( id )
	--P1890's format regex: \d{9} (e.g. 123456789)
	if not id:match( '^%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[http://www.bncatalogo.cl/F?func=direct&local_base=red10&doc_number='..id..' '..id..']'
end

function p.canticLink( id )
	--P9984's format regex: \d{18} (e.g. 981058614775106706)
	if not id:match( '^%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d$' ) then
		return false
	end
	return '[https://cantic.bnc.cat/registre/'..id..' '..id..']'
end

function p.dbnlLink( id )
	--P723's format regex: [a-z][a-z_]{3}[0-9]{3} (e.g. moza001)
	if not id:match( '^[a-z][a-z_][a-z_][a-z_]%d%d%d$' ) then
		return false
	end
	return '[http://www.dbnl.org/auteurs/auteur.php?id='..id..' '..id..']'
end

function p.siprojurisLink( id )
	--P4892's format regex: [1-9]\d* (e.g. 49951)
	if not id:match( '^[1-9]%d*$' ) then
		return false
	end
	return '[http://siprojuris.symogih.org/siprojuris/enseignant/'..id..' '..id..']'
end

function p.parlcomLink( id )
	--P1749's format regex: [\da-z]{12} (e.g. vg9fgoprkxw3)
	if not id:match( '^[%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l][%d%l]$' ) then
		return false
	end
	return '[https://www.parlement.com/id/'..id..' '..id..']'
end

function p.odisLink( id )
	--P2372's format regex: (AE|OR|EV|OB|PS|PB)_[1-9]\d{1,5} (e.g. PS_13750)
	if not id:match( '^[AEOP][BERSV]_[1-9]%d+$' ) then
		return false
	end
	return '[https://www.odis.be/lnk/'..id..' '..id..']'
end

--[[==========================================================================]]
--[[          Wikidata, navigation bar, and documentation functions           ]]
--[[==========================================================================]]

function p.getIdsFromWikidata( itemId, property )
	local ids = {}
	local statements = mw.wikibase.getBestStatements( itemId, property )
	if statements then
		for _, statement in ipairs( statements ) do
			if statement.mainsnak.datavalue then
				table.insert( ids, statement.mainsnak.datavalue.value )
			end
		end
	end
	return ids
end

function p.matchesWikidataRequirements( itemId, reqs )
	for _, group in ipairs( reqs ) do
		local property = 'P'..group[1]
		local qid = group[2]
		local statements = mw.wikibase.getBestStatements( itemId, property )
		if statements then
			for _, statement in ipairs( statements ) do
				if statement.mainsnak.datavalue then
					if statement.mainsnak.datavalue.value['numeric-id'] == qid then
						return true
	end	end	end	end	end
	return false
end

function p.createRow( id, label, rawValue, link, withUid )
	if link then
		if withUid then
			return '<li><b>'..label..'</b> <span class="uid">'..link..'</span></li>'
		end
		return '<li><b>'..label..'</b> '..link..'</li>'
	end

	return '<li class="error">The '..id..' id '..rawValue..' is not valid.</li>'..
		'[[Category:'..catNameInvalidID..'|'..id..']]' --sorting in category by authority short name
end

--[[==========================================================================]]
--[[                              Configuration                               ]]
--[[==========================================================================]]

-- Check that the Wikidata item has this property-->value before adding it
local reqs = {}

-- Parameter format: { 'parameter name', 'label', propertyId # in Wikidata, formatting/validation function }
p.conf = {
	{ 'AAG', '[[Auckland Art Gallery Toi o Tāmaki]]', 3372, p.aagLink },
	{ 'ACM-DL', '[[Association for Computing Machinery]]', 864, p.acmLink },
	{ 'ADB', '[[Australian Dictionary of Biography]]', 1907, p.adbLink },
	{ 'AGSA', '[[Art Gallery of South Australia]]', 6804, p.agsaLink },
	{ 'autores.uy', '[[autores.uy]]', 2558, p.autoresuyLink },
	{ 'AWR', '[[Australian Women\'s Register]]', 4186, p.awrLink },
	{ 'BALaT', '[[Koninklijk Instituut voor het Kunstpatrimonium]]', 3293, p.balatLink },
	{ 'BDELIS', '[[Base de données des élites suisses]]', 6231, p.bdelisLink },
	{ 'BIBSYS', '[[Bibsys]]', 1015, p.bibsysLink },
	{ 'Bildindex', '[[Marburg Picture Index]]', 2092, p.bildLink },
	{ 'BNC', '[[Biblioteca Nacional de Chile]]', 1890, p.bncLink },
	{ 'BNE', '[[Biblioteca Nacional de España]]', 950, p.bneLink },
	{ 'BNF', '[[Bibliothèque nationale de France]]', 268, p.bnfLink },
	{ 'Botanist', '[[Author citation (botany)]]', 428, p.botanistLink },
	{ 'BPN', '[[Biografisch Portaal]]', 651, p.bpnLink },
	{ 'CANTIC', "[[Catàleg d'autoritats de noms i títols de Catalunya]]", 9984, p.canticLink },
	{ 'CINII', '[[CiNii]]', 271, p.ciniiLink },
	{ 'DAAO', '[[Dictionary of Australian Artists]]', 1707, p.daaoLink },
	{ 'DBNL', '[[Digitale Bibliotheek voor de Nederlandse Letteren]]', 723, p.dbnlLink },
	{ 'DBLP', '[[DBLP]]', 2456, p.dblpLink },
	{ 'DGO4', '[[:d:Property:P1133|Monument Wallonië DGO4]]', 1133, p.dgo4Link },
	{ 'DSI', '[[Stuttgart Database of Scientific Illustrators 1450–1950]]', 2349, p.dsiLink },
	{ 'FNZA', '[[:d:Property:P6792|Find NZ Artists]]', 6792, p.fnzaLink },
	{ 'GND', '[[Gemeinsame Normdatei]]', 227, p.gndLink },
	{ 'HDS', '[[Historisch woordenboek van Zwitserland]]', 902, p.hdsLink },
	{ 'IAAF', '[[World Athletics]]', 1146, p.iaafLink },
	{ 'ICIA', '[[Information Center for Israeli Art]]', 1736, p.iciaLink },
	{ 'ISNI', '[[International Standard Name Identifier]]', 213, p.isniLink },
	{ 'Joconde', '[[Joconde]]' , 347, p.jocondeLink },
	{ 'KULTURNAV', '[[KulturNav]]', 1248, p.kulturnavLink },
	{ 'LCCN', '[[Library of Congress Control Number]]', 244, p.lccnLink },
	{ 'LIR', '[[Historical Dictionary of Switzerland#Lexicon_Istoric_Retic]]', 886, p.lirLink },
	{ 'LNB', '[[Nationale Bibliotheek van Letland]]', 1368, p.lnbLink },
	{ 'Léonore', '[[Base Léonore]]', 640, p.leonoreLink },
	{ 'MBA', '[[MusicBrainz]]', 434, p.mbaLink },
	{ 'MBAREA', '[[MusicBrainz]]', 982, p.mbareaLink },
	{ 'MBI', '[[MusicBrainz]]', 1330, p.mbiLink },
	{ 'MBL', '[[MusicBrainz]]', 966, p.mblLink },
	{ 'MBP', '[[MusicBrainz]]', 1004, p.mbpLink },
	{ 'MBRG', '[[MusicBrainz]] release group', 436, p.mbrgLink },
	{ 'MBS', '[[MusicBrainz]]', 1407, p.mbsLink },
	{ 'MBW', '[[MusicBrainz]] work', 435, p.mbwLink },
	{ 'MGP', '[[Mathematics Genealogy Project]]', 549, p.mgpLink },
	{ 'NARA', '[[National Archives and Records Administration]]', 1225, p.naraLink },
	{ 'NARCIS', '[[NARCIS]]', 7449, p.narcisLink },
	{ 'NCL', '[[National Central Library]]', 1048, p.nclLink },
	{ 'NDL', '[[Bibliotheek van het Japanse parlement]]', 349, p.ndlLink },
	{ 'NGV', '[[National Gallery of Victoria]]', 2041, p.ngvLink },
	{ 'NKC', '[[Nationale Bibliotheek van Tsjechië]]', 691, p.nkcLink },
	{ 'NLA', '[[Nationale bibliotheek van Australië]]', 409, p.nlaLink },
	{ 'NLI', '[[Nationale Bibliotheek van Israël]]', 8189, p.nliLink },
	{ 'NLP', '[[Nationale Bibliotheek van Polen]]', 1695, p.nlpLink },
	{ 'NLR', '[[Nationale Bibliotheek van Roemenië]]', 1003, p.nlrLink },
	{ 'NSK', '[[Nationale en Universitaire bibliotheek Zagreb]]', 1375, p.nskLink },
	{ 'NTA', '[[:d:Property:P1006|Nederlandse Thesaurus van Auteursnamen]]', 1006, p.ntaLink },
--	{ 'ODIS', [[ODIS]], 2372, p.odisLink },
	{ 'OEIBE', '[[Inventaris van het Bouwkundig Erfgoed|Inventaris van het Bouwkundig Erfgoed (Vlaanderen)]]', 1764, p.oeibeLink },
	{ 'ORCID', '[[ORCID]]', 496, p.orcidLink },
	{ 'PARLCOM', '[[Parlement.com]]', 1749, p.parlcomLink },
	{ 'PIC', '[[:d:Q23892012|PIC]]', 2750, p.picLink },
	{ 'RID', '[[ResearcherID]]', 1053, p.ridLink },
	{ 'RERO', '[[RÉRO|Réseau des bibliothèques de Suisse occidentale]]', 3065, p.reroLink },
	{ 'RMN', '[[Rijksmonumentenregister|Rijksmonument]]', 359, p.rmnLink },
	{ 'RMCN', '[[Rijksmonumentcomplex]]', 7135, p.rmcnLink },
	{ 'RKDartists', '[[RKD-Nederlands Instituut voor Kunstgeschiedenis]]', 650, p.rkdartistsLink },
	{ 'RKDID', '[[:d:Q17299580|RKDimages]]', 350, p.rkdidLink },
	{ 'RSL', '[[Russische Staatsbibliotheek]]', 947, p.rslLink },
	{ 'SBN', '[[Istituto Centrale per il Catalogo Unico]]', 396, p.sbnLink },
	{ 'SELIBR', '[[LIBRIS]]', 906, p.selibrLink },
	{ 'SIKART', '[[SIKART]]', 781, p.sikartLink },
	{ 'SIPROJURIS', '[[Siprojuris]]', 4892, p.siprojurisLink },
	{ 'SNAC-ID', '[[SNAC]]', 3430, p.snacLink },
	{ 'SUDOC', '[[Système universitaire de documentation]]', 269, p.sudocLink },
	{ 'Swiss parliament', '[[Bondsvergadering (Zwitserland)|Zwitserse Bondsvergadering]]', 1307, p.swissparliamentLink },
	{ 'S2AuthorId', '[[Semantic Scholar]]', 4012, p.s2authoridLink },
	{ 'TA98', '[[Terminologia Anatomica]]', 1323, p.ta98Link },
	{ 'TDVİA', '[[:d:Q21527102|TDVİA]]', 7314, p.tdviaLink },
	{ 'TE', '[[Terminologia Embryologica]]', 1693, p.teLink },
	{ 'TePapa', '[[Museum of New Zealand Te Papa Tongarewa]]', 3544, p.tepapaLink },
	{ 'TH', '[[Terminologia Histologica]]', 1694, p.thLink },
	{ 'TLS', '[[Theaterlexikon der Schweiz]]', 1362, p.tlsLink },
	{ 'Trove', '[[Trove]]', 1315, p.troveLink }, --formerly NLA-person
	{ 'ULAN', '[[Union List of Artist Names]]', 245, p.ulanLink },
	{ 'USCongress', '[[Biographical Directory of the United States Congress]]', 1157, p.uscongressLink },
	{ 'VIAF', '[[Virtual International Authority File]]', 214, p.viafLink },
}

-- Legitimate aliases to p.conf, for convenience
-- Format: { 'alias', 'parameter name in p.conf' }
p.aliases = {
	{ 'RLS', 'RSL' },
	{ 'MusicBrainz', 'MBA' },
	{ 'MusicBrainz artist', 'MBA' },
	{ 'MusicBrainz label', 'MBL' },
	{ 'MusicBrainz release group', 'MBRG' },
	{ 'MusicBrainz work', 'MBW' },
	{ 'Leonore', 'Léonore' },
	{ 'TDVIA', 'TDVİA' },
}

-- Deprecated aliases to p.conf; tracked in [[Category:Wikipedia articles with deprecated authority control identifiers]]
-- Format: { 'deprecated parameter name', 'replacement parameter name in p.conf' }
p.deprecated = {
	{ 'GKD', 'GND' },
	{ 'PND', 'GND' },
	{ 'SWD', 'GND' },
	{ 'NARA-organization', 'NARA' },
	{ 'NARA-person', 'NARA' },
}

--[[==========================================================================]]
--[[                                   Main                                   ]]
--[[==========================================================================]]

function p.authorityControl( frame )
	local resolveEntity = require( "Module:ResolveEntityId" )
	local parentArgs = frame:getParent().args
	local elements = {} --create/insert rows later
	local worldcatCat = ''
	local suppressedIdCat = ''
	local deprecatedIdCat = ''
	
	--Redirect deprecated parameters to proper parameter names, and assign tracking cat
	for _, d in pairs( p.deprecated ) do
		local dep, param = d[1], d[2]
		if (parentArgs[param] == nil or parentArgs[param] == '') and parentArgs[dep] then
			parentArgs[param] = parentArgs[dep]
		end
	end
	
	--Use QID= parameter for testing/example purposes only
	local itemId = nil
	if namespace ~= 0 then
		local qid = parentArgs['qid'] or parentArgs['QID']
		if qid then
			itemId = 'Q'..mw.ustring.gsub(qid, '^[Qq]', '')
			itemId = resolveEntity._id(itemId) --nil if unresolvable
		end
	else
		itemId = mw.wikibase.getEntityIdForCurrentPage()
	end
	
	--Wikidata fallback if requested
	if itemId then
		for _, params in ipairs( p.conf ) do
			if params[3] > 0 then
				local val = parentArgs[params[1]]
				if val == nil or val == '' then
					local canUseWikidata = nil
					if reqs[params[1]] then
						canUseWikidata = p.matchesWikidataRequirements( itemId, reqs[params[1]] )
					else
						canUseWikidata = true
					end
					if canUseWikidata then
						local wikidataIds = p.getIdsFromWikidata( itemId, 'P'..params[3] )
						if wikidataIds[1] then
							if val == '' and (namespace == 0 or testcases) then
								suppressedIdCat = ''
							else
								parentArgs[params[1]] = wikidataIds[1]
	end	end	end	end	end	end	end
	
	--Configured rows
	local rct = 0
	for _, params in ipairs( p.conf ) do
		local val = parentArgs[params[1]]
		if val and val ~= '' then
			table.insert( elements, p.createRow( params[1], params[2]..':', val, params[4]( val ), true ) )
			rct = rct + 1
		end
	end
	
	--WorldCat
	local worldcatId = parentArgs['WORLDCATID']
	if worldcatId and worldcatId ~= '' then --if present & unsuppressed
		table.insert( elements, p.createRow( 'WORLDCATID', '', worldcatId, '<b>[[WorldCat Identities]]</b>: [https://www.worldcat.org/identities/'..worldcatId..' '..worldcatId..']', false ) ) --Validation?
		worldcatCat = ''
	elseif worldcatId == nil then --if absent & unsuppressed
		local viafId = parentArgs['VIAF']
		local lccnId = parentArgs['LCCN']
		if viafId and viafId ~= '' and p.viafLink( viafId ) then --VIAF must be present, unsuppressed, & validated
			table.insert( elements, p.createRow( 'VIAF', '', viafId, '<b>[[WorldCat Identities]]</b> (via VIAF): [https://www.worldcat.org/identities/containsVIAFID/'..viafId..' '..viafId..']', false ) )
			if namespace == 0 then 
				worldcatCat = ''
			end
		elseif lccnId and lccnId ~= '' and p.lccnLink( lccnId ) then --LCCN must be present, unsuppressed, & validated
			local lccnParts = p.splitLccn( lccnId )
			if lccnParts and lccnParts[1] ~= 'sh' then
				local lccnIdFmtd = lccnParts[1]..lccnParts[2]..'-'..lccnParts[3]
				table.insert( elements, p.createRow( 'LCCN', '', lccnId, '<b>[[WorldCat Identities]]</b> (via LCCN): [https://www.worldcat.org/identities/lccn-'..lccnIdFmtd..' '..lccnIdFmtd..']', false ) )
				if namespace == 0 then 
					worldcatCat = ''
				end
			end
		end
	end
	
	local outString = ''
	if #elements > 0 then
		local args = {}
		if testcases and itemId then args = { qid = itemId } end --expensive
		local nav = mw.html.create( 'div' )
		local navTitle = mw.html.create( 'div' )
		local navContent = mw.html.create( 'div' )
		
		nav
			:attr( 'class', 'navigatie navbox mw-collapsible mw-collapsed' )
			:attr( 'role', 'navigation' )
			:attr( 'aria-labelledby', displayLabel )
			:attr( 'data-collapsetext', 'Inklappen' )
			:attr( 'data-expandtext', 'Uitklappen' )
		navTitle
			:attr( 'id', displayLabel )
			:attr( 'class', 'navigatie-titel' )
			:wikitext( '[['..displayLink..'|'..displayLabel..']]' )
		navContent
			:attr( 'class', 'navigatie-inhoud mw-collapsible-content plainlist ta-left' )
			:tag( 'ul' )
			:css( 'column-width', '36em' )
			:wikitext( table.concat(elements) )
		
		nav:node( navTitle )
		nav:node( navContent )
		
    	outString = mw.getCurrentFrame():extensionTag{
			name = 'templatestyles', args = { src = 'Navigatie/styles.css' }
		} .. tostring( nav )
	end
	
	return outString
end

return p